mirror of
https://gitlab.winehq.org/wine/wine-gecko.git
synced 2024-09-13 09:24:08 -07:00
9635 lines
308 KiB
C++
9635 lines
308 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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* vim: set ts=2 sw=2 et tw=78:
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*
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* This Original Code has been modified by IBM Corporation.
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* Modifications made by IBM described herein are
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* Copyright (c) International Business Machines
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* Corporation, 2000
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*
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* Modifications to Mozilla code or documentation
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* identified per MPL Section 3.3
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*
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* Date Modified by Description of modification
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* 05/03/2000 IBM Corp. Observer events for reflow states
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*/
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/* a presentation of a document, part 2 */
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#include "mozilla/MemoryReporting.h"
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#include "mozilla/dom/PBrowserChild.h"
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#include "mozilla/dom/TabChild.h"
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#include "mozilla/Likely.h"
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#include "mozilla/Util.h"
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#include <algorithm>
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#ifdef XP_WIN
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#include "winuser.h"
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#endif
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#include "nsPresShell.h"
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#include "nsPresContext.h"
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#include "nsIContent.h"
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#include "mozilla/dom/Element.h"
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#include "nsIDocument.h"
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#include "nsIDOMXULDocument.h"
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#include "nsCSSStyleSheet.h"
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#include "nsIDOMCSSStyleSheet.h" // for Pref-related rule management (bugs 22963,20760,31816)
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#include "nsAnimationManager.h"
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#include "nsINameSpaceManager.h" // for Pref-related rule management (bugs 22963,20760,31816)
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#include "nsIServiceManager.h"
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#include "nsFrame.h"
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#include "FrameLayerBuilder.h"
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#include "nsViewManager.h"
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#include "nsView.h"
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#include "nsCRTGlue.h"
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#include "prlog.h"
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#include "prprf.h"
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#include "prinrval.h"
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#include "nsTArray.h"
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#include "nsCOMArray.h"
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#include "nsContainerFrame.h"
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#include "nsDOMEvent.h"
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#include "nsHTMLParts.h"
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#include "nsISelection.h"
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#include "nsISelectionPrivate.h"
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#include "mozilla/Selection.h"
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#include "nsLayoutCID.h"
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#include "nsGkAtoms.h"
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#include "nsIDOMRange.h"
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#include "nsIDOMDocument.h"
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#include "nsIDOMNode.h"
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#include "nsIDOMNodeList.h"
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#include "nsIDOMElement.h"
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#include "nsRange.h"
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#include "nsCSSPseudoElements.h"
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#include "nsCOMPtr.h"
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#include "nsAutoPtr.h"
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#include "nsReadableUtils.h"
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#include "nsUnicharUtils.h"
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#include "nsIPageSequenceFrame.h"
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#include "nsCaret.h"
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#include "nsIDOMHTMLDocument.h"
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#include "nsIDOMXMLDocument.h"
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#include "nsFrameManager.h"
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#include "nsEventStateManager.h"
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#include "nsIMEStateManager.h"
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#include "nsXPCOM.h"
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#include "nsISupportsPrimitives.h"
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#include "nsILayoutHistoryState.h"
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#include "nsILineIterator.h" // for ScrollContentIntoView
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#include "nsWeakPtr.h"
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#include "pldhash.h"
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#include "mozilla/dom/Touch.h"
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#include "nsIObserverService.h"
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#include "nsIDocShell.h" // for reflow observation
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#include "nsIBaseWindow.h"
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#include "nsError.h"
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#include "nsLayoutUtils.h"
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#include "nsViewportInfo.h"
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#include "nsCSSRendering.h"
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// for |#ifdef DEBUG| code
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#include "prenv.h"
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#include "nsAlgorithm.h"
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#include "nsIAttribute.h"
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#include "nsIGlobalHistory2.h"
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#include "nsDisplayList.h"
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#include "nsRegion.h"
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#include "nsRenderingContext.h"
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#include "nsAutoLayoutPhase.h"
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#ifdef MOZ_REFLOW_PERF
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#include "nsFontMetrics.h"
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#endif
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#include "PositionedEventTargeting.h"
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#include "nsIReflowCallback.h"
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#include "nsPIDOMWindow.h"
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#include "nsFocusManager.h"
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#include "nsNPAPIPluginInstance.h"
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#include "nsIObjectFrame.h"
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#include "nsIObjectLoadingContent.h"
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#include "nsNetUtil.h"
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#include "nsEventDispatcher.h"
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#include "nsThreadUtils.h"
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#include "nsStyleSheetService.h"
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#include "gfxImageSurface.h"
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#include "gfxContext.h"
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#include "mozilla/dom/HTMLMediaElement.h"
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#include "nsSMILAnimationController.h"
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#include "SVGContentUtils.h"
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#include "nsSVGUtils.h"
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#include "nsSVGEffects.h"
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#include "SVGFragmentIdentifier.h"
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#include "nsPerformance.h"
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#include "nsRefreshDriver.h"
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#include "nsDOMNavigationTiming.h"
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// Drag & Drop, Clipboard
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#include "nsWidgetsCID.h"
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#include "nsIClipboard.h"
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#include "nsIClipboardHelper.h"
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#include "nsIDocShellTreeItem.h"
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#include "nsIURI.h"
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#include "nsIScrollableFrame.h"
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#include "prtime.h"
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#include "nsIDragService.h"
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#include "nsCopySupport.h"
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#include "nsIDOMHTMLAnchorElement.h"
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#include "nsIDOMHTMLAreaElement.h"
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#include "nsIDOMHTMLLinkElement.h"
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#include "nsITimer.h"
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#ifdef ACCESSIBILITY
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#include "nsAccessibilityService.h"
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#include "mozilla/a11y/DocAccessible.h"
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#ifdef DEBUG
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#include "mozilla/a11y/Logging.h"
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#endif
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#endif
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// For style data reconstruction
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#include "nsStyleChangeList.h"
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#include "nsCSSFrameConstructor.h"
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#ifdef MOZ_XUL
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#include "nsMenuFrame.h"
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#include "nsTreeBodyFrame.h"
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#include "nsIBoxObject.h"
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#include "nsITreeBoxObject.h"
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#include "nsMenuPopupFrame.h"
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#include "nsITreeColumns.h"
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#include "nsIDOMXULMultSelectCntrlEl.h"
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#include "nsIDOMXULSelectCntrlItemEl.h"
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#include "nsIDOMXULMenuListElement.h"
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#endif
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#include "nsPlaceholderFrame.h"
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#include "nsCanvasFrame.h"
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// Content viewer interfaces
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#include "nsIContentViewer.h"
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#include "imgIEncoder.h"
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#include "gfxPlatform.h"
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#include "mozilla/Preferences.h"
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#include "mozilla/Telemetry.h"
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#include "GeckoProfiler.h"
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#include "mozilla/css/ImageLoader.h"
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#include "Layers.h"
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#include "mozilla/layers/Compositor.h"
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#include "nsTransitionManager.h"
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#include "LayerTreeInvalidation.h"
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#include "nsAsyncDOMEvent.h"
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#include "nsIImageLoadingContent.h"
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#define ANCHOR_SCROLL_FLAGS \
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(nsIPresShell::SCROLL_OVERFLOW_HIDDEN | nsIPresShell::SCROLL_NO_PARENT_FRAMES)
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using namespace mozilla;
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using namespace mozilla::css;
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using namespace mozilla::dom;
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using namespace mozilla::layers;
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CapturingContentInfo nsIPresShell::gCaptureInfo =
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{ false /* mAllowed */, false /* mPointerLock */, false /* mRetargetToElement */,
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false /* mPreventDrag */, nullptr /* mContent */ };
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nsIContent* nsIPresShell::gKeyDownTarget;
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nsRefPtrHashtable<nsUint32HashKey, dom::Touch> nsIPresShell::gCaptureTouchList;
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bool nsIPresShell::gPreventMouseEvents = false;
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// convert a color value to a string, in the CSS format #RRGGBB
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// * - initially created for bugs 31816, 20760, 22963
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static void ColorToString(nscolor aColor, nsAutoString &aString);
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// RangePaintInfo is used to paint ranges to offscreen buffers
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struct RangePaintInfo {
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nsRefPtr<nsRange> mRange;
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nsDisplayListBuilder mBuilder;
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nsDisplayList mList;
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// offset of builder's reference frame to the root frame
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nsPoint mRootOffset;
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RangePaintInfo(nsRange* aRange, nsIFrame* aFrame)
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: mRange(aRange), mBuilder(aFrame, nsDisplayListBuilder::PAINTING, false)
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{
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MOZ_COUNT_CTOR(RangePaintInfo);
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}
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~RangePaintInfo()
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{
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mList.DeleteAll();
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MOZ_COUNT_DTOR(RangePaintInfo);
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}
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};
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#undef NOISY
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// ----------------------------------------------------------------------
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#ifdef DEBUG
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// Set the environment variable GECKO_VERIFY_REFLOW_FLAGS to one or
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// more of the following flags (comma separated) for handy debug
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// output.
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static uint32_t gVerifyReflowFlags;
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struct VerifyReflowFlags {
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const char* name;
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uint32_t bit;
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};
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static const VerifyReflowFlags gFlags[] = {
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{ "verify", VERIFY_REFLOW_ON },
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{ "reflow", VERIFY_REFLOW_NOISY },
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{ "all", VERIFY_REFLOW_ALL },
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{ "list-commands", VERIFY_REFLOW_DUMP_COMMANDS },
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{ "noisy-commands", VERIFY_REFLOW_NOISY_RC },
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{ "really-noisy-commands", VERIFY_REFLOW_REALLY_NOISY_RC },
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{ "resize", VERIFY_REFLOW_DURING_RESIZE_REFLOW },
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};
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#define NUM_VERIFY_REFLOW_FLAGS (sizeof(gFlags) / sizeof(gFlags[0]))
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static void
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ShowVerifyReflowFlags()
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{
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printf("Here are the available GECKO_VERIFY_REFLOW_FLAGS:\n");
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const VerifyReflowFlags* flag = gFlags;
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const VerifyReflowFlags* limit = gFlags + NUM_VERIFY_REFLOW_FLAGS;
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while (flag < limit) {
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printf(" %s\n", flag->name);
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++flag;
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}
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printf("Note: GECKO_VERIFY_REFLOW_FLAGS is a comma separated list of flag\n");
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printf("names (no whitespace)\n");
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}
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#endif
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//========================================================================
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//========================================================================
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//========================================================================
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#ifdef MOZ_REFLOW_PERF
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class ReflowCountMgr;
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static const char kGrandTotalsStr[] = "Grand Totals";
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// Counting Class
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class ReflowCounter {
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public:
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ReflowCounter(ReflowCountMgr * aMgr = nullptr);
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~ReflowCounter();
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void ClearTotals();
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void DisplayTotals(const char * aStr);
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void DisplayDiffTotals(const char * aStr);
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void DisplayHTMLTotals(const char * aStr);
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void Add() { mTotal++; }
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void Add(uint32_t aTotal) { mTotal += aTotal; }
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void CalcDiffInTotals();
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void SetTotalsCache();
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void SetMgr(ReflowCountMgr * aMgr) { mMgr = aMgr; }
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uint32_t GetTotal() { return mTotal; }
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protected:
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void DisplayTotals(uint32_t aTotal, const char * aTitle);
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void DisplayHTMLTotals(uint32_t aTotal, const char * aTitle);
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uint32_t mTotal;
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uint32_t mCacheTotal;
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ReflowCountMgr * mMgr; // weak reference (don't delete)
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};
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// Counting Class
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class IndiReflowCounter {
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public:
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IndiReflowCounter(ReflowCountMgr * aMgr = nullptr)
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: mFrame(nullptr),
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mCount(0),
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mMgr(aMgr),
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mCounter(aMgr),
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mHasBeenOutput(false)
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{}
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virtual ~IndiReflowCounter() {}
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nsAutoString mName;
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nsIFrame * mFrame; // weak reference (don't delete)
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int32_t mCount;
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ReflowCountMgr * mMgr; // weak reference (don't delete)
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ReflowCounter mCounter;
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bool mHasBeenOutput;
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};
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//--------------------
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// Manager Class
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//--------------------
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class ReflowCountMgr {
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public:
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ReflowCountMgr();
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virtual ~ReflowCountMgr();
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void ClearTotals();
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void ClearGrandTotals();
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void DisplayTotals(const char * aStr);
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void DisplayHTMLTotals(const char * aStr);
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void DisplayDiffsInTotals(const char * aStr);
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void Add(const char * aName, nsIFrame * aFrame);
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ReflowCounter * LookUp(const char * aName);
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void PaintCount(const char *aName, nsRenderingContext* aRenderingContext,
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nsPresContext *aPresContext, nsIFrame *aFrame,
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const nsPoint &aOffset, uint32_t aColor);
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FILE * GetOutFile() { return mFD; }
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PLHashTable * GetIndiFrameHT() { return mIndiFrameCounts; }
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void SetPresContext(nsPresContext * aPresContext) { mPresContext = aPresContext; } // weak reference
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void SetPresShell(nsIPresShell* aPresShell) { mPresShell= aPresShell; } // weak reference
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void SetDumpFrameCounts(bool aVal) { mDumpFrameCounts = aVal; }
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void SetDumpFrameByFrameCounts(bool aVal) { mDumpFrameByFrameCounts = aVal; }
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void SetPaintFrameCounts(bool aVal) { mPaintFrameByFrameCounts = aVal; }
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bool IsPaintingFrameCounts() { return mPaintFrameByFrameCounts; }
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protected:
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void DisplayTotals(uint32_t aTotal, uint32_t * aDupArray, char * aTitle);
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void DisplayHTMLTotals(uint32_t aTotal, uint32_t * aDupArray, char * aTitle);
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static int RemoveItems(PLHashEntry *he, int i, void *arg);
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static int RemoveIndiItems(PLHashEntry *he, int i, void *arg);
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void CleanUp();
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// stdout Output Methods
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static int DoSingleTotal(PLHashEntry *he, int i, void *arg);
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static int DoSingleIndi(PLHashEntry *he, int i, void *arg);
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void DoGrandTotals();
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void DoIndiTotalsTree();
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// HTML Output Methods
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static int DoSingleHTMLTotal(PLHashEntry *he, int i, void *arg);
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void DoGrandHTMLTotals();
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// Zero Out the Totals
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static int DoClearTotals(PLHashEntry *he, int i, void *arg);
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// Displays the Diff Totals
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static int DoDisplayDiffTotals(PLHashEntry *he, int i, void *arg);
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PLHashTable * mCounts;
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PLHashTable * mIndiFrameCounts;
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FILE * mFD;
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bool mDumpFrameCounts;
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bool mDumpFrameByFrameCounts;
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bool mPaintFrameByFrameCounts;
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bool mCycledOnce;
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// Root Frame for Individual Tracking
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nsPresContext * mPresContext;
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nsIPresShell* mPresShell;
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// ReflowCountMgr gReflowCountMgr;
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};
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#endif
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//========================================================================
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// comment out to hide caret
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#define SHOW_CARET
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// The upper bound on the amount of time to spend reflowing, in
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// microseconds. When this bound is exceeded and reflow commands are
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// still queued up, a reflow event is posted. The idea is for reflow
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// to not hog the processor beyond the time specifed in
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// gMaxRCProcessingTime. This data member is initialized from the
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// layout.reflow.timeslice pref.
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#define NS_MAX_REFLOW_TIME 1000000
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static int32_t gMaxRCProcessingTime = -1;
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struct nsCallbackEventRequest
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{
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nsIReflowCallback* callback;
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nsCallbackEventRequest* next;
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};
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// ----------------------------------------------------------------------------
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#define ASSERT_REFLOW_SCHEDULED_STATE() \
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NS_ASSERTION(mReflowScheduled == \
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GetPresContext()->RefreshDriver()-> \
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IsLayoutFlushObserver(this), "Unexpected state")
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class nsAutoCauseReflowNotifier
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{
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public:
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nsAutoCauseReflowNotifier(PresShell* aShell)
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: mShell(aShell)
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{
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mShell->WillCauseReflow();
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}
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~nsAutoCauseReflowNotifier()
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{
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// This check should not be needed. Currently the only place that seem
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// to need it is the code that deals with bug 337586.
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if (!mShell->mHaveShutDown) {
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mShell->DidCauseReflow();
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}
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else {
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nsContentUtils::RemoveScriptBlocker();
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}
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}
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PresShell* mShell;
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};
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class MOZ_STACK_CLASS nsPresShellEventCB : public nsDispatchingCallback
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|
{
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public:
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nsPresShellEventCB(PresShell* aPresShell) : mPresShell(aPresShell) {}
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virtual void HandleEvent(nsEventChainPostVisitor& aVisitor)
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|
{
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if (aVisitor.mPresContext && aVisitor.mEvent->eventStructType != NS_EVENT) {
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if (aVisitor.mEvent->message == NS_MOUSE_BUTTON_DOWN ||
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aVisitor.mEvent->message == NS_MOUSE_BUTTON_UP) {
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// Mouse-up and mouse-down events call nsFrame::HandlePress/Release
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// which call GetContentOffsetsFromPoint which requires up-to-date layout.
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// Bring layout up-to-date now so that GetCurrentEventFrame() below
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// will return a real frame and we don't have to worry about
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// destroying it by flushing later.
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mPresShell->FlushPendingNotifications(Flush_Layout);
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} else if (aVisitor.mEvent->message == NS_WHEEL_WHEEL &&
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aVisitor.mEventStatus != nsEventStatus_eConsumeNoDefault) {
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nsIFrame* frame = mPresShell->GetCurrentEventFrame();
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if (frame) {
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// chrome (including addons) should be able to know if content
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// handles both D3E "wheel" event and legacy mouse scroll events.
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// We should dispatch legacy mouse events before dispatching the
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// "wheel" event into system group.
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nsRefPtr<nsEventStateManager> esm =
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aVisitor.mPresContext->EventStateManager();
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esm->DispatchLegacyMouseScrollEvents(frame,
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static_cast<widget::WheelEvent*>(aVisitor.mEvent),
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&aVisitor.mEventStatus);
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}
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}
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nsIFrame* frame = mPresShell->GetCurrentEventFrame();
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if (!frame &&
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(aVisitor.mEvent->message == NS_MOUSE_BUTTON_UP ||
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aVisitor.mEvent->message == NS_TOUCH_END)) {
|
|
// Redirect BUTTON_UP and TOUCH_END events to the root frame to ensure
|
|
// that capturing is released.
|
|
frame = mPresShell->GetRootFrame();
|
|
}
|
|
if (frame) {
|
|
frame->HandleEvent(aVisitor.mPresContext,
|
|
(nsGUIEvent*) aVisitor.mEvent,
|
|
&aVisitor.mEventStatus);
|
|
}
|
|
}
|
|
}
|
|
|
|
nsRefPtr<PresShell> mPresShell;
|
|
};
|
|
|
|
class nsBeforeFirstPaintDispatcher : public nsRunnable
|
|
{
|
|
public:
|
|
nsBeforeFirstPaintDispatcher(nsIDocument* aDocument)
|
|
: mDocument(aDocument) {}
|
|
|
|
// Fires the "before-first-paint" event so that interested parties (right now, the
|
|
// mobile browser) are aware of it.
|
|
NS_IMETHOD Run()
|
|
{
|
|
nsCOMPtr<nsIObserverService> observerService =
|
|
mozilla::services::GetObserverService();
|
|
if (observerService) {
|
|
observerService->NotifyObservers(mDocument, "before-first-paint", NULL);
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
private:
|
|
nsCOMPtr<nsIDocument> mDocument;
|
|
};
|
|
|
|
bool PresShell::sDisableNonTestMouseEvents = false;
|
|
|
|
#ifdef PR_LOGGING
|
|
PRLogModuleInfo* PresShell::gLog;
|
|
#endif
|
|
|
|
#ifdef DEBUG
|
|
static void
|
|
VerifyStyleTree(nsPresContext* aPresContext, nsFrameManager* aFrameManager)
|
|
{
|
|
if (nsFrame::GetVerifyStyleTreeEnable()) {
|
|
nsIFrame* rootFrame = aFrameManager->GetRootFrame();
|
|
aPresContext->RestyleManager()->DebugVerifyStyleTree(rootFrame);
|
|
}
|
|
}
|
|
#define VERIFY_STYLE_TREE ::VerifyStyleTree(mPresContext, mFrameConstructor)
|
|
#else
|
|
#define VERIFY_STYLE_TREE
|
|
#endif
|
|
|
|
static bool gVerifyReflowEnabled;
|
|
|
|
bool
|
|
nsIPresShell::GetVerifyReflowEnable()
|
|
{
|
|
#ifdef DEBUG
|
|
static bool firstTime = true;
|
|
if (firstTime) {
|
|
firstTime = false;
|
|
char* flags = PR_GetEnv("GECKO_VERIFY_REFLOW_FLAGS");
|
|
if (flags) {
|
|
bool error = false;
|
|
|
|
for (;;) {
|
|
char* comma = PL_strchr(flags, ',');
|
|
if (comma)
|
|
*comma = '\0';
|
|
|
|
bool found = false;
|
|
const VerifyReflowFlags* flag = gFlags;
|
|
const VerifyReflowFlags* limit = gFlags + NUM_VERIFY_REFLOW_FLAGS;
|
|
while (flag < limit) {
|
|
if (PL_strcasecmp(flag->name, flags) == 0) {
|
|
gVerifyReflowFlags |= flag->bit;
|
|
found = true;
|
|
break;
|
|
}
|
|
++flag;
|
|
}
|
|
|
|
if (! found)
|
|
error = true;
|
|
|
|
if (! comma)
|
|
break;
|
|
|
|
*comma = ',';
|
|
flags = comma + 1;
|
|
}
|
|
|
|
if (error)
|
|
ShowVerifyReflowFlags();
|
|
}
|
|
|
|
if (VERIFY_REFLOW_ON & gVerifyReflowFlags) {
|
|
gVerifyReflowEnabled = true;
|
|
|
|
printf("Note: verifyreflow is enabled");
|
|
if (VERIFY_REFLOW_NOISY & gVerifyReflowFlags) {
|
|
printf(" (noisy)");
|
|
}
|
|
if (VERIFY_REFLOW_ALL & gVerifyReflowFlags) {
|
|
printf(" (all)");
|
|
}
|
|
if (VERIFY_REFLOW_DUMP_COMMANDS & gVerifyReflowFlags) {
|
|
printf(" (show reflow commands)");
|
|
}
|
|
if (VERIFY_REFLOW_NOISY_RC & gVerifyReflowFlags) {
|
|
printf(" (noisy reflow commands)");
|
|
if (VERIFY_REFLOW_REALLY_NOISY_RC & gVerifyReflowFlags) {
|
|
printf(" (REALLY noisy reflow commands)");
|
|
}
|
|
}
|
|
printf("\n");
|
|
}
|
|
}
|
|
#endif
|
|
return gVerifyReflowEnabled;
|
|
}
|
|
|
|
void
|
|
PresShell::AddInvalidateHiddenPresShellObserver(nsRefreshDriver *aDriver)
|
|
{
|
|
if (!mHiddenInvalidationObserverRefreshDriver && !mIsDestroying && !mHaveShutDown) {
|
|
aDriver->AddPresShellToInvalidateIfHidden(this);
|
|
mHiddenInvalidationObserverRefreshDriver = aDriver;
|
|
}
|
|
}
|
|
|
|
void
|
|
nsIPresShell::InvalidatePresShellIfHidden()
|
|
{
|
|
if (!IsVisible() && mPresContext) {
|
|
mPresContext->NotifyInvalidation(0);
|
|
}
|
|
mHiddenInvalidationObserverRefreshDriver = nullptr;
|
|
}
|
|
|
|
void
|
|
nsIPresShell::SetVerifyReflowEnable(bool aEnabled)
|
|
{
|
|
gVerifyReflowEnabled = aEnabled;
|
|
}
|
|
|
|
/* virtual */ void
|
|
nsIPresShell::AddWeakFrameExternal(nsWeakFrame* aWeakFrame)
|
|
{
|
|
AddWeakFrameInternal(aWeakFrame);
|
|
}
|
|
|
|
void
|
|
nsIPresShell::AddWeakFrameInternal(nsWeakFrame* aWeakFrame)
|
|
{
|
|
if (aWeakFrame->GetFrame()) {
|
|
aWeakFrame->GetFrame()->AddStateBits(NS_FRAME_EXTERNAL_REFERENCE);
|
|
}
|
|
aWeakFrame->SetPreviousWeakFrame(mWeakFrames);
|
|
mWeakFrames = aWeakFrame;
|
|
}
|
|
|
|
/* virtual */ void
|
|
nsIPresShell::RemoveWeakFrameExternal(nsWeakFrame* aWeakFrame)
|
|
{
|
|
RemoveWeakFrameInternal(aWeakFrame);
|
|
}
|
|
|
|
void
|
|
nsIPresShell::RemoveWeakFrameInternal(nsWeakFrame* aWeakFrame)
|
|
{
|
|
if (mWeakFrames == aWeakFrame) {
|
|
mWeakFrames = aWeakFrame->GetPreviousWeakFrame();
|
|
return;
|
|
}
|
|
nsWeakFrame* nextWeak = mWeakFrames;
|
|
while (nextWeak && nextWeak->GetPreviousWeakFrame() != aWeakFrame) {
|
|
nextWeak = nextWeak->GetPreviousWeakFrame();
|
|
}
|
|
if (nextWeak) {
|
|
nextWeak->SetPreviousWeakFrame(aWeakFrame->GetPreviousWeakFrame());
|
|
}
|
|
}
|
|
|
|
already_AddRefed<nsFrameSelection>
|
|
nsIPresShell::FrameSelection()
|
|
{
|
|
nsRefPtr<nsFrameSelection> ret = mSelection;
|
|
return ret.forget();
|
|
}
|
|
|
|
//----------------------------------------------------------------------
|
|
|
|
static bool sSynthMouseMove = true;
|
|
static uint32_t sNextPresShellId;
|
|
|
|
PresShell::PresShell()
|
|
: mMouseLocation(NS_UNCONSTRAINEDSIZE, NS_UNCONSTRAINEDSIZE)
|
|
{
|
|
mSelection = nullptr;
|
|
#ifdef MOZ_REFLOW_PERF
|
|
mReflowCountMgr = new ReflowCountMgr();
|
|
mReflowCountMgr->SetPresContext(mPresContext);
|
|
mReflowCountMgr->SetPresShell(this);
|
|
#endif
|
|
#ifdef PR_LOGGING
|
|
if (! gLog)
|
|
gLog = PR_NewLogModule("PresShell");
|
|
#endif
|
|
mSelectionFlags = nsISelectionDisplay::DISPLAY_TEXT | nsISelectionDisplay::DISPLAY_IMAGES;
|
|
mIsThemeSupportDisabled = false;
|
|
mIsActive = true;
|
|
// FIXME/bug 735029: find a better solution to this problem
|
|
#ifdef MOZ_ANDROID_OMTC
|
|
// The java pan/zoom code uses this to mean approximately "request a
|
|
// reset of pan/zoom state" which doesn't necessarily correspond
|
|
// with the first paint of content.
|
|
mIsFirstPaint = false;
|
|
#else
|
|
mIsFirstPaint = true;
|
|
#endif
|
|
mPresShellId = sNextPresShellId++;
|
|
mFrozen = false;
|
|
#ifdef DEBUG
|
|
mPresArenaAllocCount = 0;
|
|
#endif
|
|
mRenderFlags = 0;
|
|
mXResolution = 1.0;
|
|
mYResolution = 1.0;
|
|
mViewportOverridden = false;
|
|
|
|
mScrollPositionClampingScrollPortSizeSet = false;
|
|
|
|
mMaxLineBoxWidth = 0;
|
|
|
|
static bool addedSynthMouseMove = false;
|
|
if (!addedSynthMouseMove) {
|
|
Preferences::AddBoolVarCache(&sSynthMouseMove,
|
|
"layout.reflow.synthMouseMove", true);
|
|
addedSynthMouseMove = true;
|
|
}
|
|
}
|
|
|
|
NS_IMPL_ISUPPORTS7(PresShell, nsIPresShell, nsIDocumentObserver,
|
|
nsISelectionController,
|
|
nsISelectionDisplay, nsIObserver, nsISupportsWeakReference,
|
|
nsIMutationObserver)
|
|
|
|
PresShell::~PresShell()
|
|
{
|
|
if (!mHaveShutDown) {
|
|
NS_NOTREACHED("Someone did not call nsIPresShell::destroy");
|
|
Destroy();
|
|
}
|
|
|
|
NS_ASSERTION(mCurrentEventContentStack.Count() == 0,
|
|
"Huh, event content left on the stack in pres shell dtor!");
|
|
NS_ASSERTION(mFirstCallbackEventRequest == nullptr &&
|
|
mLastCallbackEventRequest == nullptr,
|
|
"post-reflow queues not empty. This means we're leaking");
|
|
|
|
#ifdef DEBUG
|
|
MOZ_ASSERT(mPresArenaAllocCount == 0,
|
|
"Some pres arena objects were not freed");
|
|
#endif
|
|
|
|
delete mStyleSet;
|
|
delete mFrameConstructor;
|
|
|
|
mCurrentEventContent = nullptr;
|
|
|
|
NS_IF_RELEASE(mPresContext);
|
|
NS_IF_RELEASE(mDocument);
|
|
NS_IF_RELEASE(mSelection);
|
|
}
|
|
|
|
/**
|
|
* Initialize the presentation shell. Create view manager and style
|
|
* manager.
|
|
* Note this can't be merged into our constructor because caret initialization
|
|
* calls AddRef() on us.
|
|
*/
|
|
void
|
|
PresShell::Init(nsIDocument* aDocument,
|
|
nsPresContext* aPresContext,
|
|
nsViewManager* aViewManager,
|
|
nsStyleSet* aStyleSet,
|
|
nsCompatibility aCompatMode)
|
|
{
|
|
NS_PRECONDITION(aDocument, "null ptr");
|
|
NS_PRECONDITION(aPresContext, "null ptr");
|
|
NS_PRECONDITION(aViewManager, "null ptr");
|
|
NS_PRECONDITION(!mDocument, "already initialized");
|
|
|
|
if (!aDocument || !aPresContext || !aViewManager || mDocument) {
|
|
return;
|
|
}
|
|
|
|
mFramesToDirty.Init();
|
|
|
|
mDocument = aDocument;
|
|
NS_ADDREF(mDocument);
|
|
mViewManager = aViewManager;
|
|
|
|
// Create our frame constructor.
|
|
mFrameConstructor = new nsCSSFrameConstructor(mDocument, this, aStyleSet);
|
|
|
|
mFrameManager = mFrameConstructor;
|
|
|
|
// The document viewer owns both view manager and pres shell.
|
|
mViewManager->SetPresShell(this);
|
|
|
|
// Bind the context to the presentation shell.
|
|
mPresContext = aPresContext;
|
|
NS_ADDREF(mPresContext);
|
|
aPresContext->SetShell(this);
|
|
|
|
// Now we can initialize the style set.
|
|
aStyleSet->Init(aPresContext);
|
|
mStyleSet = aStyleSet;
|
|
|
|
// Notify our prescontext that it now has a compatibility mode. Note that
|
|
// this MUST happen after we set up our style set but before we create any
|
|
// frames.
|
|
mPresContext->CompatibilityModeChanged();
|
|
|
|
// setup the preference style rules (no forced reflow), and do it
|
|
// before creating any frames.
|
|
SetPreferenceStyleRules(false);
|
|
|
|
NS_ADDREF(mSelection = new nsFrameSelection());
|
|
|
|
mSelection->Init(this, nullptr);
|
|
|
|
// Important: this has to happen after the selection has been set up
|
|
#ifdef SHOW_CARET
|
|
// make the caret
|
|
mCaret = new nsCaret();
|
|
mCaret->Init(this);
|
|
mOriginalCaret = mCaret;
|
|
|
|
//SetCaretEnabled(true); // make it show in browser windows
|
|
#endif
|
|
//set up selection to be displayed in document
|
|
// Don't enable selection for print media
|
|
nsPresContext::nsPresContextType type = aPresContext->Type();
|
|
if (type != nsPresContext::eContext_PrintPreview &&
|
|
type != nsPresContext::eContext_Print)
|
|
SetDisplaySelection(nsISelectionController::SELECTION_DISABLED);
|
|
|
|
if (gMaxRCProcessingTime == -1) {
|
|
gMaxRCProcessingTime =
|
|
Preferences::GetInt("layout.reflow.timeslice", NS_MAX_REFLOW_TIME);
|
|
}
|
|
|
|
{
|
|
nsCOMPtr<nsIObserverService> os = mozilla::services::GetObserverService();
|
|
if (os) {
|
|
os->AddObserver(this, "agent-sheet-added", false);
|
|
os->AddObserver(this, "user-sheet-added", false);
|
|
os->AddObserver(this, "author-sheet-added", false);
|
|
os->AddObserver(this, "agent-sheet-removed", false);
|
|
os->AddObserver(this, "user-sheet-removed", false);
|
|
os->AddObserver(this, "author-sheet-removed", false);
|
|
#ifdef MOZ_XUL
|
|
os->AddObserver(this, "chrome-flush-skin-caches", false);
|
|
#endif
|
|
}
|
|
}
|
|
|
|
#ifdef MOZ_REFLOW_PERF
|
|
if (mReflowCountMgr) {
|
|
bool paintFrameCounts =
|
|
Preferences::GetBool("layout.reflow.showframecounts");
|
|
|
|
bool dumpFrameCounts =
|
|
Preferences::GetBool("layout.reflow.dumpframecounts");
|
|
|
|
bool dumpFrameByFrameCounts =
|
|
Preferences::GetBool("layout.reflow.dumpframebyframecounts");
|
|
|
|
mReflowCountMgr->SetDumpFrameCounts(dumpFrameCounts);
|
|
mReflowCountMgr->SetDumpFrameByFrameCounts(dumpFrameByFrameCounts);
|
|
mReflowCountMgr->SetPaintFrameCounts(paintFrameCounts);
|
|
}
|
|
#endif
|
|
|
|
if (mDocument->HasAnimationController()) {
|
|
nsSMILAnimationController* animCtrl = mDocument->GetAnimationController();
|
|
animCtrl->NotifyRefreshDriverCreated(GetPresContext()->RefreshDriver());
|
|
}
|
|
|
|
// Get our activeness from the docShell.
|
|
QueryIsActive();
|
|
|
|
// Setup our font inflation preferences.
|
|
SetupFontInflation();
|
|
}
|
|
|
|
void
|
|
PresShell::Destroy()
|
|
{
|
|
NS_ASSERTION(!nsContentUtils::IsSafeToRunScript(),
|
|
"destroy called on presshell while scripts not blocked");
|
|
|
|
#ifdef MOZ_REFLOW_PERF
|
|
DumpReflows();
|
|
if (mReflowCountMgr) {
|
|
delete mReflowCountMgr;
|
|
mReflowCountMgr = nullptr;
|
|
}
|
|
#endif
|
|
|
|
if (mHaveShutDown)
|
|
return;
|
|
|
|
#ifdef ACCESSIBILITY
|
|
if (mDocAccessible) {
|
|
#ifdef DEBUG
|
|
if (a11y::logging::IsEnabled(a11y::logging::eDocDestroy))
|
|
a11y::logging::DocDestroy("presshell destroyed", mDocument);
|
|
#endif
|
|
|
|
mDocAccessible->Shutdown();
|
|
mDocAccessible = nullptr;
|
|
}
|
|
#endif // ACCESSIBILITY
|
|
|
|
MaybeReleaseCapturingContent();
|
|
|
|
if (gKeyDownTarget && gKeyDownTarget->OwnerDoc() == mDocument) {
|
|
NS_RELEASE(gKeyDownTarget);
|
|
}
|
|
|
|
if (mContentToScrollTo) {
|
|
mContentToScrollTo->DeleteProperty(nsGkAtoms::scrolling);
|
|
mContentToScrollTo = nullptr;
|
|
}
|
|
|
|
if (mPresContext) {
|
|
// We need to notify the destroying the nsPresContext to ESM for
|
|
// suppressing to use from ESM.
|
|
mPresContext->EventStateManager()->NotifyDestroyPresContext(mPresContext);
|
|
}
|
|
|
|
{
|
|
nsCOMPtr<nsIObserverService> os = mozilla::services::GetObserverService();
|
|
if (os) {
|
|
os->RemoveObserver(this, "agent-sheet-added");
|
|
os->RemoveObserver(this, "user-sheet-added");
|
|
os->RemoveObserver(this, "author-sheet-added");
|
|
os->RemoveObserver(this, "agent-sheet-removed");
|
|
os->RemoveObserver(this, "user-sheet-removed");
|
|
os->RemoveObserver(this, "author-sheet-removed");
|
|
#ifdef MOZ_XUL
|
|
os->RemoveObserver(this, "chrome-flush-skin-caches");
|
|
#endif
|
|
}
|
|
}
|
|
|
|
// If our paint suppression timer is still active, kill it.
|
|
if (mPaintSuppressionTimer) {
|
|
mPaintSuppressionTimer->Cancel();
|
|
mPaintSuppressionTimer = nullptr;
|
|
}
|
|
|
|
// Same for our reflow continuation timer
|
|
if (mReflowContinueTimer) {
|
|
mReflowContinueTimer->Cancel();
|
|
mReflowContinueTimer = nullptr;
|
|
}
|
|
|
|
mSynthMouseMoveEvent.Revoke();
|
|
|
|
mUpdateImageVisibilityEvent.Revoke();
|
|
|
|
ClearVisibleImagesList();
|
|
|
|
if (mCaret) {
|
|
mCaret->Terminate();
|
|
mCaret = nullptr;
|
|
}
|
|
|
|
if (mSelection) {
|
|
mSelection->DisconnectFromPresShell();
|
|
}
|
|
|
|
// release our pref style sheet, if we have one still
|
|
ClearPreferenceStyleRules();
|
|
|
|
mIsDestroying = true;
|
|
|
|
// We can't release all the event content in
|
|
// mCurrentEventContentStack here since there might be code on the
|
|
// stack that will release the event content too. Double release
|
|
// bad!
|
|
|
|
// The frames will be torn down, so remove them from the current
|
|
// event frame stack (since they'd be dangling references if we'd
|
|
// leave them in) and null out the mCurrentEventFrame pointer as
|
|
// well.
|
|
|
|
mCurrentEventFrame = nullptr;
|
|
|
|
int32_t i, count = mCurrentEventFrameStack.Length();
|
|
for (i = 0; i < count; i++) {
|
|
mCurrentEventFrameStack[i] = nullptr;
|
|
}
|
|
|
|
mFramesToDirty.Clear();
|
|
|
|
if (mViewManager) {
|
|
// Clear the view manager's weak pointer back to |this| in case it
|
|
// was leaked.
|
|
mViewManager->SetPresShell(nullptr);
|
|
mViewManager = nullptr;
|
|
}
|
|
|
|
mStyleSet->BeginShutdown(mPresContext);
|
|
nsRefreshDriver* rd = GetPresContext()->RefreshDriver();
|
|
|
|
// This shell must be removed from the document before the frame
|
|
// hierarchy is torn down to avoid finding deleted frames through
|
|
// this presshell while the frames are being torn down
|
|
if (mDocument) {
|
|
NS_ASSERTION(mDocument->GetShell() == this, "Wrong shell?");
|
|
mDocument->DeleteShell();
|
|
|
|
if (mDocument->HasAnimationController()) {
|
|
mDocument->GetAnimationController()->NotifyRefreshDriverDestroying(rd);
|
|
}
|
|
}
|
|
|
|
// Revoke any pending events. We need to do this and cancel pending reflows
|
|
// before we destroy the frame manager, since apparently frame destruction
|
|
// sometimes spins the event queue when plug-ins are involved(!).
|
|
rd->RemoveLayoutFlushObserver(this);
|
|
if (mHiddenInvalidationObserverRefreshDriver) {
|
|
mHiddenInvalidationObserverRefreshDriver->RemovePresShellToInvalidateIfHidden(this);
|
|
}
|
|
|
|
if (rd->PresContext() == GetPresContext()) {
|
|
rd->RevokeViewManagerFlush();
|
|
}
|
|
|
|
mResizeEvent.Revoke();
|
|
if (mAsyncResizeTimerIsActive) {
|
|
mAsyncResizeEventTimer->Cancel();
|
|
mAsyncResizeTimerIsActive = false;
|
|
}
|
|
|
|
CancelAllPendingReflows();
|
|
CancelPostedReflowCallbacks();
|
|
|
|
// Destroy the frame manager. This will destroy the frame hierarchy
|
|
mFrameConstructor->WillDestroyFrameTree();
|
|
|
|
// Destroy all frame properties (whose destruction was suppressed
|
|
// while destroying the frame tree, but which might contain more
|
|
// frames within the properties.
|
|
if (mPresContext) {
|
|
// Clear out the prescontext's property table -- since our frame tree is
|
|
// now dead, we shouldn't be looking up any more properties in that table.
|
|
// We want to do this before we call SetShell() on the prescontext, so
|
|
// property destructors can usefully call GetPresShell() on the
|
|
// prescontext.
|
|
mPresContext->PropertyTable()->DeleteAll();
|
|
}
|
|
|
|
|
|
NS_WARN_IF_FALSE(!mWeakFrames, "Weak frames alive after destroying FrameManager");
|
|
while (mWeakFrames) {
|
|
mWeakFrames->Clear(this);
|
|
}
|
|
|
|
// Let the style set do its cleanup.
|
|
mStyleSet->Shutdown(mPresContext);
|
|
|
|
if (mPresContext) {
|
|
// We hold a reference to the pres context, and it holds a weak link back
|
|
// to us. To avoid the pres context having a dangling reference, set its
|
|
// pres shell to NULL
|
|
mPresContext->SetShell(nullptr);
|
|
|
|
// Clear the link handler (weak reference) as well
|
|
mPresContext->SetLinkHandler(nullptr);
|
|
}
|
|
|
|
mHaveShutDown = true;
|
|
}
|
|
|
|
void
|
|
PresShell::MakeZombie()
|
|
{
|
|
mIsZombie = true;
|
|
CancelAllPendingReflows();
|
|
}
|
|
|
|
void
|
|
nsIPresShell::SetAuthorStyleDisabled(bool aStyleDisabled)
|
|
{
|
|
if (aStyleDisabled != mStyleSet->GetAuthorStyleDisabled()) {
|
|
mStyleSet->SetAuthorStyleDisabled(aStyleDisabled);
|
|
ReconstructStyleData();
|
|
}
|
|
}
|
|
|
|
bool
|
|
nsIPresShell::GetAuthorStyleDisabled() const
|
|
{
|
|
return mStyleSet->GetAuthorStyleDisabled();
|
|
}
|
|
|
|
nsresult
|
|
PresShell::SetPreferenceStyleRules(bool aForceReflow)
|
|
{
|
|
if (!mDocument) {
|
|
return NS_ERROR_NULL_POINTER;
|
|
}
|
|
|
|
nsPIDOMWindow *window = mDocument->GetWindow();
|
|
|
|
// If the document doesn't have a window there's no need to notify
|
|
// its presshell about changes to preferences since the document is
|
|
// in a state where it doesn't matter any more (see
|
|
// nsDocumentViewer::Close()).
|
|
|
|
if (!window) {
|
|
return NS_ERROR_NULL_POINTER;
|
|
}
|
|
|
|
NS_PRECONDITION(mPresContext, "presContext cannot be null");
|
|
if (mPresContext) {
|
|
// first, make sure this is not a chrome shell
|
|
if (nsContentUtils::IsInChromeDocshell(mDocument)) {
|
|
return NS_OK;
|
|
}
|
|
|
|
#ifdef DEBUG_attinasi
|
|
printf("Setting Preference Style Rules:\n");
|
|
#endif
|
|
// if here, we need to create rules for the prefs
|
|
// - this includes the background-color, the text-color,
|
|
// the link color, the visited link color and the link-underlining
|
|
|
|
// first clear any exising rules
|
|
nsresult result = ClearPreferenceStyleRules();
|
|
|
|
// now the link rules (must come after the color rules, or links will not be correct color!)
|
|
// XXX - when there is both an override and agent pref stylesheet this won't matter,
|
|
// as the color rules will be overrides and the links rules will be agent
|
|
if (NS_SUCCEEDED(result)) {
|
|
result = SetPrefLinkRules();
|
|
}
|
|
if (NS_SUCCEEDED(result)) {
|
|
result = SetPrefFocusRules();
|
|
}
|
|
if (NS_SUCCEEDED(result)) {
|
|
result = SetPrefNoScriptRule();
|
|
}
|
|
if (NS_SUCCEEDED(result)) {
|
|
result = SetPrefNoFramesRule();
|
|
}
|
|
#ifdef DEBUG_attinasi
|
|
printf( "Preference Style Rules set: error=%ld\n", (long)result);
|
|
#endif
|
|
|
|
// Note that this method never needs to force any calculation; the caller
|
|
// will recalculate style if needed
|
|
|
|
return result;
|
|
}
|
|
|
|
return NS_ERROR_NULL_POINTER;
|
|
}
|
|
|
|
nsresult PresShell::ClearPreferenceStyleRules(void)
|
|
{
|
|
nsresult result = NS_OK;
|
|
if (mPrefStyleSheet) {
|
|
NS_ASSERTION(mStyleSet, "null styleset entirely unexpected!");
|
|
if (mStyleSet) {
|
|
// remove the sheet from the styleset:
|
|
// - note that we have to check for success by comparing the count before and after...
|
|
#ifdef DEBUG
|
|
int32_t numBefore = mStyleSet->SheetCount(nsStyleSet::eUserSheet);
|
|
NS_ASSERTION(numBefore > 0, "no user stylesheets in styleset, but we have one!");
|
|
#endif
|
|
mStyleSet->RemoveStyleSheet(nsStyleSet::eUserSheet, mPrefStyleSheet);
|
|
|
|
#ifdef DEBUG_attinasi
|
|
NS_ASSERTION((numBefore - 1) == mStyleSet->GetNumberOfUserStyleSheets(),
|
|
"Pref stylesheet was not removed");
|
|
printf("PrefStyleSheet removed\n");
|
|
#endif
|
|
// clear the sheet pointer: it is strictly historical now
|
|
mPrefStyleSheet = nullptr;
|
|
}
|
|
}
|
|
return result;
|
|
}
|
|
|
|
nsresult
|
|
PresShell::CreatePreferenceStyleSheet()
|
|
{
|
|
NS_ASSERTION(!mPrefStyleSheet, "prefStyleSheet already exists");
|
|
mPrefStyleSheet = new nsCSSStyleSheet(CORS_NONE);
|
|
nsCOMPtr<nsIURI> uri;
|
|
nsresult rv = NS_NewURI(getter_AddRefs(uri), "about:PreferenceStyleSheet", nullptr);
|
|
if (NS_FAILED(rv)) {
|
|
mPrefStyleSheet = nullptr;
|
|
return rv;
|
|
}
|
|
NS_ASSERTION(uri, "null but no error");
|
|
mPrefStyleSheet->SetURIs(uri, uri, uri);
|
|
mPrefStyleSheet->SetComplete();
|
|
uint32_t index;
|
|
rv =
|
|
mPrefStyleSheet->InsertRuleInternal(NS_LITERAL_STRING("@namespace svg url(http://www.w3.org/2000/svg);"),
|
|
0, &index);
|
|
if (NS_FAILED(rv)) {
|
|
mPrefStyleSheet = nullptr;
|
|
return rv;
|
|
}
|
|
rv =
|
|
mPrefStyleSheet->InsertRuleInternal(NS_LITERAL_STRING("@namespace url(http://www.w3.org/1999/xhtml);"),
|
|
0, &index);
|
|
if (NS_FAILED(rv)) {
|
|
mPrefStyleSheet = nullptr;
|
|
return rv;
|
|
}
|
|
|
|
mStyleSet->AppendStyleSheet(nsStyleSet::eUserSheet, mPrefStyleSheet);
|
|
return NS_OK;
|
|
}
|
|
|
|
// XXX We want these after the @namespace rules. Does order matter
|
|
// for these rules, or can we call StyleRule::StyleRuleCount()
|
|
// and just "append"?
|
|
static uint32_t sInsertPrefSheetRulesAt = 2;
|
|
|
|
nsresult
|
|
PresShell::SetPrefNoScriptRule()
|
|
{
|
|
nsresult rv = NS_OK;
|
|
|
|
// also handle the case where print is done from print preview
|
|
// see bug #342439 for more details
|
|
nsIDocument* doc = mDocument;
|
|
if (doc->IsStaticDocument()) {
|
|
doc = doc->GetOriginalDocument();
|
|
}
|
|
|
|
bool scriptEnabled = doc->IsScriptEnabled();
|
|
if (scriptEnabled) {
|
|
if (!mPrefStyleSheet) {
|
|
rv = CreatePreferenceStyleSheet();
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
}
|
|
|
|
uint32_t index = 0;
|
|
mPrefStyleSheet->
|
|
InsertRuleInternal(NS_LITERAL_STRING("noscript{display:none!important}"),
|
|
sInsertPrefSheetRulesAt, &index);
|
|
}
|
|
|
|
return rv;
|
|
}
|
|
|
|
nsresult PresShell::SetPrefNoFramesRule(void)
|
|
{
|
|
NS_ASSERTION(mPresContext,"null prescontext not allowed");
|
|
if (!mPresContext) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
nsresult rv = NS_OK;
|
|
|
|
if (!mPrefStyleSheet) {
|
|
rv = CreatePreferenceStyleSheet();
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
}
|
|
|
|
NS_ASSERTION(mPrefStyleSheet, "prefstylesheet should not be null");
|
|
|
|
bool allowSubframes = true;
|
|
nsCOMPtr<nsISupports> container = mPresContext->GetContainer();
|
|
nsCOMPtr<nsIDocShell> docShell(do_QueryInterface(container));
|
|
if (docShell) {
|
|
docShell->GetAllowSubframes(&allowSubframes);
|
|
}
|
|
if (!allowSubframes) {
|
|
uint32_t index = 0;
|
|
rv = mPrefStyleSheet->
|
|
InsertRuleInternal(NS_LITERAL_STRING("noframes{display:block}"),
|
|
sInsertPrefSheetRulesAt, &index);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
rv = mPrefStyleSheet->
|
|
InsertRuleInternal(NS_LITERAL_STRING("frame, frameset, iframe {display:none!important}"),
|
|
sInsertPrefSheetRulesAt, &index);
|
|
}
|
|
return rv;
|
|
}
|
|
|
|
nsresult PresShell::SetPrefLinkRules(void)
|
|
{
|
|
NS_ASSERTION(mPresContext,"null prescontext not allowed");
|
|
if (!mPresContext) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
nsresult rv = NS_OK;
|
|
|
|
if (!mPrefStyleSheet) {
|
|
rv = CreatePreferenceStyleSheet();
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
}
|
|
|
|
NS_ASSERTION(mPrefStyleSheet, "prefstylesheet should not be null");
|
|
|
|
// support default link colors:
|
|
// this means the link colors need to be overridable,
|
|
// which they are if we put them in the agent stylesheet,
|
|
// though if using an override sheet this will cause authors grief still
|
|
// In the agent stylesheet, they are !important when we are ignoring document colors
|
|
|
|
nscolor linkColor(mPresContext->DefaultLinkColor());
|
|
nscolor activeColor(mPresContext->DefaultActiveLinkColor());
|
|
nscolor visitedColor(mPresContext->DefaultVisitedLinkColor());
|
|
|
|
NS_NAMED_LITERAL_STRING(ruleClose, "}");
|
|
uint32_t index = 0;
|
|
nsAutoString strColor;
|
|
|
|
// insert a rule to color links: '*|*:link {color: #RRGGBB [!important];}'
|
|
ColorToString(linkColor, strColor);
|
|
rv = mPrefStyleSheet->
|
|
InsertRuleInternal(NS_LITERAL_STRING("*|*:link{color:") +
|
|
strColor + ruleClose,
|
|
sInsertPrefSheetRulesAt, &index);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
// - visited links: '*|*:visited {color: #RRGGBB [!important];}'
|
|
ColorToString(visitedColor, strColor);
|
|
rv = mPrefStyleSheet->
|
|
InsertRuleInternal(NS_LITERAL_STRING("*|*:visited{color:") +
|
|
strColor + ruleClose,
|
|
sInsertPrefSheetRulesAt, &index);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
// - active links: '*|*:-moz-any-link:active {color: #RRGGBB [!important];}'
|
|
ColorToString(activeColor, strColor);
|
|
rv = mPrefStyleSheet->
|
|
InsertRuleInternal(NS_LITERAL_STRING("*|*:-moz-any-link:active{color:") +
|
|
strColor + ruleClose,
|
|
sInsertPrefSheetRulesAt, &index);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
bool underlineLinks =
|
|
mPresContext->GetCachedBoolPref(kPresContext_UnderlineLinks);
|
|
|
|
if (underlineLinks) {
|
|
// create a rule to make underlining happen
|
|
// '*|*:-moz-any-link {text-decoration:[underline|none];}'
|
|
// no need for important, we want these to be overridable
|
|
// NOTE: these must go in the agent stylesheet or they cannot be
|
|
// overridden by authors
|
|
rv = mPrefStyleSheet->
|
|
InsertRuleInternal(NS_LITERAL_STRING("*|*:-moz-any-link:not(svg|a){text-decoration:underline}"),
|
|
sInsertPrefSheetRulesAt, &index);
|
|
} else {
|
|
rv = mPrefStyleSheet->
|
|
InsertRuleInternal(NS_LITERAL_STRING("*|*:-moz-any-link{text-decoration:none}"),
|
|
sInsertPrefSheetRulesAt, &index);
|
|
}
|
|
|
|
return rv;
|
|
}
|
|
|
|
nsresult PresShell::SetPrefFocusRules(void)
|
|
{
|
|
NS_ASSERTION(mPresContext,"null prescontext not allowed");
|
|
nsresult result = NS_OK;
|
|
|
|
if (!mPresContext)
|
|
result = NS_ERROR_FAILURE;
|
|
|
|
if (NS_SUCCEEDED(result) && !mPrefStyleSheet)
|
|
result = CreatePreferenceStyleSheet();
|
|
|
|
if (NS_SUCCEEDED(result)) {
|
|
NS_ASSERTION(mPrefStyleSheet, "prefstylesheet should not be null");
|
|
|
|
if (mPresContext->GetUseFocusColors()) {
|
|
nscolor focusBackground(mPresContext->FocusBackgroundColor());
|
|
nscolor focusText(mPresContext->FocusTextColor());
|
|
|
|
// insert a rule to make focus the preferred color
|
|
uint32_t index = 0;
|
|
nsAutoString strRule, strColor;
|
|
|
|
///////////////////////////////////////////////////////////////
|
|
// - focus: '*:focus
|
|
ColorToString(focusText,strColor);
|
|
strRule.AppendLiteral("*:focus,*:focus>font {color: ");
|
|
strRule.Append(strColor);
|
|
strRule.AppendLiteral(" !important; background-color: ");
|
|
ColorToString(focusBackground,strColor);
|
|
strRule.Append(strColor);
|
|
strRule.AppendLiteral(" !important; } ");
|
|
// insert the rules
|
|
result = mPrefStyleSheet->
|
|
InsertRuleInternal(strRule, sInsertPrefSheetRulesAt, &index);
|
|
}
|
|
uint8_t focusRingWidth = mPresContext->FocusRingWidth();
|
|
bool focusRingOnAnything = mPresContext->GetFocusRingOnAnything();
|
|
uint8_t focusRingStyle = mPresContext->GetFocusRingStyle();
|
|
|
|
if ((NS_SUCCEEDED(result) && focusRingWidth != 1 && focusRingWidth <= 4 ) || focusRingOnAnything) {
|
|
uint32_t index = 0;
|
|
nsAutoString strRule;
|
|
if (!focusRingOnAnything)
|
|
strRule.AppendLiteral("*|*:link:focus, *|*:visited"); // If we only want focus rings on the normal things like links
|
|
strRule.AppendLiteral(":focus {outline: "); // For example 3px dotted WindowText (maximum 4)
|
|
strRule.AppendInt(focusRingWidth);
|
|
if (focusRingStyle == 0) // solid
|
|
strRule.AppendLiteral("px solid -moz-mac-focusring !important; -moz-outline-radius: 3px; outline-offset: 1px; } ");
|
|
else // dotted
|
|
strRule.AppendLiteral("px dotted WindowText !important; } ");
|
|
// insert the rules
|
|
result = mPrefStyleSheet->
|
|
InsertRuleInternal(strRule, sInsertPrefSheetRulesAt, &index);
|
|
NS_ENSURE_SUCCESS(result, result);
|
|
if (focusRingWidth != 1) {
|
|
// If the focus ring width is different from the default, fix buttons with rings
|
|
strRule.AssignLiteral("button::-moz-focus-inner, input[type=\"reset\"]::-moz-focus-inner,");
|
|
strRule.AppendLiteral("input[type=\"button\"]::-moz-focus-inner, ");
|
|
strRule.AppendLiteral("input[type=\"submit\"]::-moz-focus-inner { padding: 1px 2px 1px 2px; border: ");
|
|
strRule.AppendInt(focusRingWidth);
|
|
if (focusRingStyle == 0) // solid
|
|
strRule.AppendLiteral("px solid transparent !important; } ");
|
|
else
|
|
strRule.AppendLiteral("px dotted transparent !important; } ");
|
|
result = mPrefStyleSheet->
|
|
InsertRuleInternal(strRule, sInsertPrefSheetRulesAt, &index);
|
|
NS_ENSURE_SUCCESS(result, result);
|
|
|
|
strRule.AssignLiteral("button:focus::-moz-focus-inner, input[type=\"reset\"]:focus::-moz-focus-inner,");
|
|
strRule.AppendLiteral("input[type=\"button\"]:focus::-moz-focus-inner, input[type=\"submit\"]:focus::-moz-focus-inner {");
|
|
strRule.AppendLiteral("border-color: ButtonText !important; }");
|
|
result = mPrefStyleSheet->
|
|
InsertRuleInternal(strRule, sInsertPrefSheetRulesAt, &index);
|
|
}
|
|
}
|
|
}
|
|
return result;
|
|
}
|
|
|
|
void
|
|
PresShell::AddUserSheet(nsISupports* aSheet)
|
|
{
|
|
// Make sure this does what nsDocumentViewer::CreateStyleSet does wrt
|
|
// ordering. We want this new sheet to come after all the existing stylesheet
|
|
// service sheets, but before other user sheets; see nsIStyleSheetService.idl
|
|
// for the ordering. Just remove and readd all the nsStyleSheetService
|
|
// sheets.
|
|
nsCOMPtr<nsIStyleSheetService> dummy =
|
|
do_GetService(NS_STYLESHEETSERVICE_CONTRACTID);
|
|
|
|
mStyleSet->BeginUpdate();
|
|
|
|
nsStyleSheetService *sheetService = nsStyleSheetService::gInstance;
|
|
nsCOMArray<nsIStyleSheet> & userSheets = *sheetService->UserStyleSheets();
|
|
int32_t i;
|
|
// Iterate forwards when removing so the searches for RemoveStyleSheet are as
|
|
// short as possible.
|
|
for (i = 0; i < userSheets.Count(); ++i) {
|
|
mStyleSet->RemoveStyleSheet(nsStyleSet::eUserSheet, userSheets[i]);
|
|
}
|
|
|
|
// Now iterate backwards, so that the order of userSheets will be the same as
|
|
// the order of sheets from it in the style set.
|
|
for (i = userSheets.Count() - 1; i >= 0; --i) {
|
|
mStyleSet->PrependStyleSheet(nsStyleSet::eUserSheet, userSheets[i]);
|
|
}
|
|
|
|
mStyleSet->EndUpdate();
|
|
|
|
ReconstructStyleData();
|
|
}
|
|
|
|
void
|
|
PresShell::AddAgentSheet(nsISupports* aSheet)
|
|
{
|
|
// Make sure this does what nsDocumentViewer::CreateStyleSet does
|
|
// wrt ordering.
|
|
nsCOMPtr<nsIStyleSheet> sheet = do_QueryInterface(aSheet);
|
|
if (!sheet) {
|
|
return;
|
|
}
|
|
|
|
mStyleSet->AppendStyleSheet(nsStyleSet::eAgentSheet, sheet);
|
|
ReconstructStyleData();
|
|
}
|
|
|
|
void
|
|
PresShell::AddAuthorSheet(nsISupports* aSheet)
|
|
{
|
|
nsCOMPtr<nsIStyleSheet> sheet = do_QueryInterface(aSheet);
|
|
if (!sheet) {
|
|
return;
|
|
}
|
|
|
|
// Document specific "additional" Author sheets should be stronger than the ones
|
|
// added with the StyleSheetService.
|
|
nsIStyleSheet* firstAuthorSheet = mDocument->FirstAdditionalAuthorSheet();
|
|
if (firstAuthorSheet) {
|
|
mStyleSet->InsertStyleSheetBefore(nsStyleSet::eDocSheet, sheet, firstAuthorSheet);
|
|
} else {
|
|
mStyleSet->AppendStyleSheet(nsStyleSet::eDocSheet, sheet);
|
|
}
|
|
|
|
ReconstructStyleData();
|
|
}
|
|
|
|
void
|
|
PresShell::RemoveSheet(nsStyleSet::sheetType aType, nsISupports* aSheet)
|
|
{
|
|
nsCOMPtr<nsIStyleSheet> sheet = do_QueryInterface(aSheet);
|
|
if (!sheet) {
|
|
return;
|
|
}
|
|
|
|
mStyleSet->RemoveStyleSheet(aType, sheet);
|
|
ReconstructStyleData();
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
PresShell::SetDisplaySelection(int16_t aToggle)
|
|
{
|
|
mSelection->SetDisplaySelection(aToggle);
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
PresShell::GetDisplaySelection(int16_t *aToggle)
|
|
{
|
|
*aToggle = mSelection->GetDisplaySelection();
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
PresShell::GetSelection(SelectionType aType, nsISelection **aSelection)
|
|
{
|
|
if (!aSelection || !mSelection)
|
|
return NS_ERROR_NULL_POINTER;
|
|
|
|
*aSelection = mSelection->GetSelection(aType);
|
|
|
|
if (!(*aSelection))
|
|
return NS_ERROR_INVALID_ARG;
|
|
|
|
NS_ADDREF(*aSelection);
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
Selection*
|
|
PresShell::GetCurrentSelection(SelectionType aType)
|
|
{
|
|
if (!mSelection)
|
|
return nullptr;
|
|
|
|
return mSelection->GetSelection(aType);
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
PresShell::ScrollSelectionIntoView(SelectionType aType, SelectionRegion aRegion,
|
|
int16_t aFlags)
|
|
{
|
|
if (!mSelection)
|
|
return NS_ERROR_NULL_POINTER;
|
|
|
|
return mSelection->ScrollSelectionIntoView(aType, aRegion, aFlags);
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
PresShell::RepaintSelection(SelectionType aType)
|
|
{
|
|
if (!mSelection)
|
|
return NS_ERROR_NULL_POINTER;
|
|
|
|
return mSelection->RepaintSelection(aType);
|
|
}
|
|
|
|
// Make shell be a document observer
|
|
void
|
|
PresShell::BeginObservingDocument()
|
|
{
|
|
if (mDocument && !mIsDestroying) {
|
|
mDocument->AddObserver(this);
|
|
if (mIsDocumentGone) {
|
|
NS_WARNING("Adding a presshell that was disconnected from the document "
|
|
"as a document observer? Sounds wrong...");
|
|
mIsDocumentGone = false;
|
|
}
|
|
}
|
|
}
|
|
|
|
// Make shell stop being a document observer
|
|
void
|
|
PresShell::EndObservingDocument()
|
|
{
|
|
// XXXbz do we need to tell the frame constructor that the document
|
|
// is gone, perhaps? Except for printing it's NOT gone, sometimes.
|
|
mIsDocumentGone = true;
|
|
if (mDocument) {
|
|
mDocument->RemoveObserver(this);
|
|
}
|
|
}
|
|
|
|
#ifdef DEBUG_kipp
|
|
char* nsPresShell_ReflowStackPointerTop;
|
|
#endif
|
|
|
|
nsresult
|
|
PresShell::Initialize(nscoord aWidth, nscoord aHeight)
|
|
{
|
|
if (mIsDestroying) {
|
|
return NS_OK;
|
|
}
|
|
|
|
if (!mDocument) {
|
|
// Nothing to do
|
|
return NS_OK;
|
|
}
|
|
|
|
mozilla::TimeStamp timerStart = mozilla::TimeStamp::Now();
|
|
|
|
NS_ASSERTION(!mDidInitialize, "Why are we being called?");
|
|
|
|
nsCOMPtr<nsIPresShell> kungFuDeathGrip(this);
|
|
mDidInitialize = true;
|
|
|
|
#ifdef DEBUG
|
|
if (VERIFY_REFLOW_NOISY_RC & gVerifyReflowFlags) {
|
|
if (mDocument) {
|
|
nsIURI *uri = mDocument->GetDocumentURI();
|
|
if (uri) {
|
|
nsAutoCString url;
|
|
uri->GetSpec(url);
|
|
printf("*** PresShell::Initialize (this=%p, url='%s')\n", (void*)this, url.get());
|
|
}
|
|
}
|
|
}
|
|
#endif
|
|
|
|
if (mCaret)
|
|
mCaret->EraseCaret();
|
|
|
|
// XXX Do a full invalidate at the beginning so that invalidates along
|
|
// the way don't have region accumulation issues?
|
|
|
|
mPresContext->SetVisibleArea(nsRect(0, 0, aWidth, aHeight));
|
|
|
|
// Get the root frame from the frame manager
|
|
// XXXbz it would be nice to move this somewhere else... like frame manager
|
|
// Init(), say. But we need to make sure our views are all set up by the
|
|
// time we do this!
|
|
nsIFrame* rootFrame = mFrameConstructor->GetRootFrame();
|
|
NS_ASSERTION(!rootFrame, "How did that happen, exactly?");
|
|
if (!rootFrame) {
|
|
nsAutoScriptBlocker scriptBlocker;
|
|
mFrameConstructor->BeginUpdate();
|
|
rootFrame = mFrameConstructor->ConstructRootFrame();
|
|
mFrameConstructor->SetRootFrame(rootFrame);
|
|
mFrameConstructor->EndUpdate();
|
|
}
|
|
|
|
NS_ENSURE_STATE(!mHaveShutDown);
|
|
|
|
if (!rootFrame) {
|
|
return NS_ERROR_OUT_OF_MEMORY;
|
|
}
|
|
|
|
for (nsIFrame* f = rootFrame; f; f = nsLayoutUtils::GetCrossDocParentFrame(f)) {
|
|
if (f->GetStateBits() & NS_FRAME_NO_COMPONENT_ALPHA) {
|
|
f->InvalidateFrameSubtree();
|
|
f->RemoveStateBits(NS_FRAME_NO_COMPONENT_ALPHA);
|
|
}
|
|
}
|
|
|
|
Element *root = mDocument->GetRootElement();
|
|
|
|
if (root) {
|
|
{
|
|
nsAutoCauseReflowNotifier reflowNotifier(this);
|
|
mFrameConstructor->BeginUpdate();
|
|
|
|
// Have the style sheet processor construct frame for the root
|
|
// content object down
|
|
mFrameConstructor->ContentInserted(nullptr, root, nullptr, false);
|
|
VERIFY_STYLE_TREE;
|
|
|
|
// Something in mFrameConstructor->ContentInserted may have caused
|
|
// Destroy() to get called, bug 337586.
|
|
NS_ENSURE_STATE(!mHaveShutDown);
|
|
|
|
mFrameConstructor->EndUpdate();
|
|
}
|
|
|
|
// nsAutoScriptBlocker going out of scope may have killed us too
|
|
NS_ENSURE_STATE(!mHaveShutDown);
|
|
|
|
// Run the XBL binding constructors for any new frames we've constructed
|
|
mDocument->BindingManager()->ProcessAttachedQueue();
|
|
|
|
// Constructors may have killed us too
|
|
NS_ENSURE_STATE(!mHaveShutDown);
|
|
|
|
// Now flush out pending restyles before we actually reflow, in
|
|
// case XBL constructors changed styles somewhere.
|
|
{
|
|
nsAutoScriptBlocker scriptBlocker;
|
|
mFrameConstructor->CreateNeededFrames();
|
|
mPresContext->RestyleManager()->ProcessPendingRestyles();
|
|
}
|
|
|
|
// And that might have run _more_ XBL constructors
|
|
NS_ENSURE_STATE(!mHaveShutDown);
|
|
}
|
|
|
|
NS_ASSERTION(rootFrame, "How did that happen?");
|
|
|
|
// Note: when the frame was created above it had the NS_FRAME_IS_DIRTY bit
|
|
// set, but XBL processing could have caused a reflow which clears it.
|
|
if (MOZ_LIKELY(rootFrame->GetStateBits() & NS_FRAME_IS_DIRTY)) {
|
|
// Unset the DIRTY bits so that FrameNeedsReflow() will work right.
|
|
rootFrame->RemoveStateBits(NS_FRAME_IS_DIRTY |
|
|
NS_FRAME_HAS_DIRTY_CHILDREN);
|
|
NS_ASSERTION(!mDirtyRoots.Contains(rootFrame),
|
|
"Why is the root in mDirtyRoots already?");
|
|
FrameNeedsReflow(rootFrame, eResize, NS_FRAME_IS_DIRTY);
|
|
NS_ASSERTION(mDirtyRoots.Contains(rootFrame),
|
|
"Should be in mDirtyRoots now");
|
|
NS_ASSERTION(mReflowScheduled, "Why no reflow scheduled?");
|
|
}
|
|
|
|
// Restore our root scroll position now if we're getting here after EndLoad
|
|
// got called, since this is our one chance to do it. Note that we need not
|
|
// have reflowed for this to work; when the scrollframe is finally reflowed
|
|
// it'll pick up the position we store in it here.
|
|
if (!mDocumentLoading) {
|
|
RestoreRootScrollPosition();
|
|
}
|
|
|
|
// For printing, we just immediately unsuppress.
|
|
if (!mPresContext->IsPaginated()) {
|
|
// Kick off a one-shot timer based off our pref value. When this timer
|
|
// fires, if painting is still locked down, then we will go ahead and
|
|
// trigger a full invalidate and allow painting to proceed normally.
|
|
mPaintingSuppressed = true;
|
|
// Don't suppress painting if the document isn't loading.
|
|
nsIDocument::ReadyState readyState = mDocument->GetReadyStateEnum();
|
|
if (readyState != nsIDocument::READYSTATE_COMPLETE) {
|
|
mPaintSuppressionTimer = do_CreateInstance("@mozilla.org/timer;1");
|
|
}
|
|
if (!mPaintSuppressionTimer) {
|
|
mPaintingSuppressed = false;
|
|
} else {
|
|
// Initialize the timer.
|
|
|
|
// Default to PAINTLOCK_EVENT_DELAY if we can't get the pref value.
|
|
int32_t delay =
|
|
Preferences::GetInt("nglayout.initialpaint.delay",
|
|
PAINTLOCK_EVENT_DELAY);
|
|
|
|
mPaintSuppressionTimer->InitWithFuncCallback(sPaintSuppressionCallback,
|
|
this, delay,
|
|
nsITimer::TYPE_ONE_SHOT);
|
|
}
|
|
}
|
|
|
|
if (root && root->IsXUL()) {
|
|
mozilla::Telemetry::AccumulateTimeDelta(Telemetry::XUL_INITIAL_FRAME_CONSTRUCTION,
|
|
timerStart);
|
|
}
|
|
|
|
return NS_OK; //XXX this needs to be real. MMP
|
|
}
|
|
|
|
void
|
|
PresShell::sPaintSuppressionCallback(nsITimer *aTimer, void* aPresShell)
|
|
{
|
|
nsRefPtr<PresShell> self = static_cast<PresShell*>(aPresShell);
|
|
if (self)
|
|
self->UnsuppressPainting();
|
|
}
|
|
|
|
void
|
|
PresShell::AsyncResizeEventCallback(nsITimer* aTimer, void* aPresShell)
|
|
{
|
|
static_cast<PresShell*>(aPresShell)->FireResizeEvent();
|
|
}
|
|
|
|
nsresult
|
|
PresShell::ResizeReflowOverride(nscoord aWidth, nscoord aHeight)
|
|
{
|
|
mViewportOverridden = true;
|
|
return ResizeReflowIgnoreOverride(aWidth, aHeight);
|
|
}
|
|
|
|
nsresult
|
|
PresShell::ResizeReflow(nscoord aWidth, nscoord aHeight)
|
|
{
|
|
if (mViewportOverridden) {
|
|
// The viewport has been overridden, and this reflow request
|
|
// didn't ask to ignore the override. Pretend it didn't happen.
|
|
return NS_OK;
|
|
}
|
|
return ResizeReflowIgnoreOverride(aWidth, aHeight);
|
|
}
|
|
|
|
nsresult
|
|
PresShell::ResizeReflowIgnoreOverride(nscoord aWidth, nscoord aHeight)
|
|
{
|
|
NS_PRECONDITION(!mIsReflowing, "Shouldn't be in reflow here!");
|
|
NS_PRECONDITION(aWidth != NS_UNCONSTRAINEDSIZE,
|
|
"shouldn't use unconstrained widths anymore");
|
|
|
|
// If we don't have a root frame yet, that means we haven't had our initial
|
|
// reflow... If that's the case, and aWidth or aHeight is unconstrained,
|
|
// ignore them altogether.
|
|
nsIFrame* rootFrame = mFrameConstructor->GetRootFrame();
|
|
|
|
if (!rootFrame && aHeight == NS_UNCONSTRAINEDSIZE) {
|
|
// We can't do the work needed for SizeToContent without a root
|
|
// frame, and we want to return before setting the visible area.
|
|
return NS_ERROR_NOT_AVAILABLE;
|
|
}
|
|
|
|
nsRefPtr<nsViewManager> viewManagerDeathGrip = mViewManager;
|
|
// Take this ref after viewManager so it'll make sure to go away first
|
|
nsCOMPtr<nsIPresShell> kungFuDeathGrip(this);
|
|
|
|
if (!mIsDestroying && !mResizeEvent.IsPending() &&
|
|
!mAsyncResizeTimerIsActive) {
|
|
FireBeforeResizeEvent();
|
|
}
|
|
|
|
mPresContext->SetVisibleArea(nsRect(0, 0, aWidth, aHeight));
|
|
|
|
// There isn't anything useful we can do if the initial reflow hasn't happened
|
|
rootFrame = mFrameConstructor->GetRootFrame();
|
|
if (!rootFrame)
|
|
return NS_OK;
|
|
|
|
if (!GetPresContext()->SupressingResizeReflow())
|
|
{
|
|
// Have to make sure that the content notifications are flushed before we
|
|
// start messing with the frame model; otherwise we can get content doubling.
|
|
mDocument->FlushPendingNotifications(Flush_ContentAndNotify);
|
|
|
|
// Make sure style is up to date
|
|
{
|
|
nsAutoScriptBlocker scriptBlocker;
|
|
mFrameConstructor->CreateNeededFrames();
|
|
mPresContext->RestyleManager()->ProcessPendingRestyles();
|
|
}
|
|
|
|
rootFrame = mFrameConstructor->GetRootFrame();
|
|
if (!mIsDestroying && rootFrame) {
|
|
// XXX Do a full invalidate at the beginning so that invalidates along
|
|
// the way don't have region accumulation issues?
|
|
|
|
{
|
|
nsAutoCauseReflowNotifier crNotifier(this);
|
|
WillDoReflow();
|
|
|
|
// Kick off a top-down reflow
|
|
AUTO_LAYOUT_PHASE_ENTRY_POINT(GetPresContext(), Reflow);
|
|
nsViewManager::AutoDisableRefresh refreshBlocker(mViewManager);
|
|
|
|
mDirtyRoots.RemoveElement(rootFrame);
|
|
DoReflow(rootFrame, true);
|
|
}
|
|
|
|
DidDoReflow(true, false);
|
|
}
|
|
}
|
|
|
|
rootFrame = mFrameConstructor->GetRootFrame();
|
|
if (aHeight == NS_UNCONSTRAINEDSIZE && rootFrame) {
|
|
mPresContext->SetVisibleArea(
|
|
nsRect(0, 0, aWidth, rootFrame->GetRect().height));
|
|
}
|
|
|
|
if (!mIsDestroying && !mResizeEvent.IsPending() &&
|
|
!mAsyncResizeTimerIsActive) {
|
|
if (mInResize) {
|
|
if (!mAsyncResizeEventTimer) {
|
|
mAsyncResizeEventTimer = do_CreateInstance("@mozilla.org/timer;1");
|
|
}
|
|
if (mAsyncResizeEventTimer) {
|
|
mAsyncResizeTimerIsActive = true;
|
|
mAsyncResizeEventTimer->InitWithFuncCallback(AsyncResizeEventCallback,
|
|
this, 15,
|
|
nsITimer::TYPE_ONE_SHOT);
|
|
}
|
|
} else {
|
|
nsRefPtr<nsRunnableMethod<PresShell> > resizeEvent =
|
|
NS_NewRunnableMethod(this, &PresShell::FireResizeEvent);
|
|
if (NS_SUCCEEDED(NS_DispatchToCurrentThread(resizeEvent))) {
|
|
mResizeEvent = resizeEvent;
|
|
mDocument->SetNeedStyleFlush();
|
|
}
|
|
}
|
|
}
|
|
|
|
return NS_OK; //XXX this needs to be real. MMP
|
|
}
|
|
|
|
void
|
|
PresShell::FireBeforeResizeEvent()
|
|
{
|
|
if (mIsDocumentGone)
|
|
return;
|
|
|
|
// Send beforeresize event from here.
|
|
nsEvent event(true, NS_BEFORERESIZE_EVENT);
|
|
|
|
nsPIDOMWindow *window = mDocument->GetWindow();
|
|
if (window) {
|
|
nsCOMPtr<nsIPresShell> kungFuDeathGrip(this);
|
|
nsEventDispatcher::Dispatch(window, mPresContext, &event);
|
|
}
|
|
}
|
|
|
|
void
|
|
PresShell::FireResizeEvent()
|
|
{
|
|
if (mAsyncResizeTimerIsActive) {
|
|
mAsyncResizeTimerIsActive = false;
|
|
mAsyncResizeEventTimer->Cancel();
|
|
}
|
|
mResizeEvent.Revoke();
|
|
|
|
if (mIsDocumentGone)
|
|
return;
|
|
|
|
//Send resize event from here.
|
|
nsEvent event(true, NS_RESIZE_EVENT);
|
|
nsEventStatus status = nsEventStatus_eIgnore;
|
|
|
|
nsPIDOMWindow *window = mDocument->GetWindow();
|
|
if (window) {
|
|
nsCOMPtr<nsIPresShell> kungFuDeathGrip(this);
|
|
mInResize = true;
|
|
nsEventDispatcher::Dispatch(window, mPresContext, &event, nullptr, &status);
|
|
mInResize = false;
|
|
}
|
|
}
|
|
|
|
void
|
|
PresShell::SetIgnoreFrameDestruction(bool aIgnore)
|
|
{
|
|
if (mDocument) {
|
|
// We need to tell the ImageLoader to drop all its references to frames
|
|
// because they're about to go away and it won't get notifications of that.
|
|
mDocument->StyleImageLoader()->ClearFrames();
|
|
}
|
|
mIgnoreFrameDestruction = aIgnore;
|
|
}
|
|
|
|
void
|
|
PresShell::NotifyDestroyingFrame(nsIFrame* aFrame)
|
|
{
|
|
if (!mIgnoreFrameDestruction) {
|
|
mDocument->StyleImageLoader()->DropRequestsForFrame(aFrame);
|
|
|
|
mFrameConstructor->NotifyDestroyingFrame(aFrame);
|
|
|
|
for (int32_t idx = mDirtyRoots.Length(); idx; ) {
|
|
--idx;
|
|
if (mDirtyRoots[idx] == aFrame) {
|
|
mDirtyRoots.RemoveElementAt(idx);
|
|
}
|
|
}
|
|
|
|
// Remove frame properties
|
|
mPresContext->NotifyDestroyingFrame(aFrame);
|
|
|
|
if (aFrame == mCurrentEventFrame) {
|
|
mCurrentEventContent = aFrame->GetContent();
|
|
mCurrentEventFrame = nullptr;
|
|
}
|
|
|
|
#ifdef DEBUG
|
|
if (aFrame == mDrawEventTargetFrame) {
|
|
mDrawEventTargetFrame = nullptr;
|
|
}
|
|
#endif
|
|
|
|
for (unsigned int i=0; i < mCurrentEventFrameStack.Length(); i++) {
|
|
if (aFrame == mCurrentEventFrameStack.ElementAt(i)) {
|
|
//One of our stack frames was deleted. Get its content so that when we
|
|
//pop it we can still get its new frame from its content
|
|
nsIContent *currentEventContent = aFrame->GetContent();
|
|
mCurrentEventContentStack.ReplaceObjectAt(currentEventContent, i);
|
|
mCurrentEventFrameStack[i] = nullptr;
|
|
}
|
|
}
|
|
|
|
mFramesToDirty.RemoveEntry(aFrame);
|
|
} else {
|
|
// We must delete this property in situ so that its destructor removes the
|
|
// frame from FrameLayerBuilder::DisplayItemData::mFrameList -- otherwise
|
|
// the DisplayItemData destructor will use the destroyed frame when it
|
|
// tries to remove it from the (array) value of this property.
|
|
mPresContext->PropertyTable()->
|
|
Delete(aFrame, FrameLayerBuilder::LayerManagerDataProperty());
|
|
}
|
|
}
|
|
|
|
already_AddRefed<nsCaret> PresShell::GetCaret() const
|
|
{
|
|
nsRefPtr<nsCaret> caret = mCaret;
|
|
return caret.forget();
|
|
}
|
|
|
|
void PresShell::MaybeInvalidateCaretPosition()
|
|
{
|
|
if (mCaret) {
|
|
mCaret->InvalidateOutsideCaret();
|
|
}
|
|
}
|
|
|
|
void PresShell::SetCaret(nsCaret *aNewCaret)
|
|
{
|
|
mCaret = aNewCaret;
|
|
}
|
|
|
|
void PresShell::RestoreCaret()
|
|
{
|
|
mCaret = mOriginalCaret;
|
|
}
|
|
|
|
NS_IMETHODIMP PresShell::SetCaretEnabled(bool aInEnable)
|
|
{
|
|
bool oldEnabled = mCaretEnabled;
|
|
|
|
mCaretEnabled = aInEnable;
|
|
|
|
if (mCaret && (mCaretEnabled != oldEnabled))
|
|
{
|
|
/* Don't change the caret's selection here! This was an evil side-effect of SetCaretEnabled()
|
|
nsCOMPtr<nsIDOMSelection> domSel;
|
|
if (NS_SUCCEEDED(GetSelection(nsISelectionController::SELECTION_NORMAL, getter_AddRefs(domSel))) && domSel)
|
|
mCaret->SetCaretDOMSelection(domSel);
|
|
*/
|
|
mCaret->SetCaretVisible(mCaretEnabled);
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP PresShell::SetCaretReadOnly(bool aReadOnly)
|
|
{
|
|
if (mCaret)
|
|
mCaret->SetCaretReadOnly(aReadOnly);
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP PresShell::GetCaretEnabled(bool *aOutEnabled)
|
|
{
|
|
NS_ENSURE_ARG_POINTER(aOutEnabled);
|
|
*aOutEnabled = mCaretEnabled;
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP PresShell::SetCaretVisibilityDuringSelection(bool aVisibility)
|
|
{
|
|
if (mCaret)
|
|
mCaret->SetVisibilityDuringSelection(aVisibility);
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP PresShell::GetCaretVisible(bool *aOutIsVisible)
|
|
{
|
|
*aOutIsVisible = false;
|
|
if (mCaret) {
|
|
nsresult rv = mCaret->GetCaretVisible(aOutIsVisible);
|
|
NS_ENSURE_SUCCESS(rv,rv);
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP PresShell::SetSelectionFlags(int16_t aInEnable)
|
|
{
|
|
mSelectionFlags = aInEnable;
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP PresShell::GetSelectionFlags(int16_t *aOutEnable)
|
|
{
|
|
if (!aOutEnable)
|
|
return NS_ERROR_INVALID_ARG;
|
|
*aOutEnable = mSelectionFlags;
|
|
return NS_OK;
|
|
}
|
|
|
|
//implementation of nsISelectionController
|
|
|
|
NS_IMETHODIMP
|
|
PresShell::CharacterMove(bool aForward, bool aExtend)
|
|
{
|
|
return mSelection->CharacterMove(aForward, aExtend);
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
PresShell::CharacterExtendForDelete()
|
|
{
|
|
return mSelection->CharacterExtendForDelete();
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
PresShell::CharacterExtendForBackspace()
|
|
{
|
|
return mSelection->CharacterExtendForBackspace();
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
PresShell::WordMove(bool aForward, bool aExtend)
|
|
{
|
|
nsresult result = mSelection->WordMove(aForward, aExtend);
|
|
// if we can't go down/up any more we must then move caret completely to
|
|
// end/beginning respectively.
|
|
if (NS_FAILED(result))
|
|
result = CompleteMove(aForward, aExtend);
|
|
return result;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
PresShell::WordExtendForDelete(bool aForward)
|
|
{
|
|
return mSelection->WordExtendForDelete(aForward);
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
PresShell::LineMove(bool aForward, bool aExtend)
|
|
{
|
|
nsresult result = mSelection->LineMove(aForward, aExtend);
|
|
// if we can't go down/up any more we must then move caret completely to
|
|
// end/beginning respectively.
|
|
if (NS_FAILED(result))
|
|
result = CompleteMove(aForward,aExtend);
|
|
return result;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
PresShell::IntraLineMove(bool aForward, bool aExtend)
|
|
{
|
|
return mSelection->IntraLineMove(aForward, aExtend);
|
|
}
|
|
|
|
|
|
|
|
NS_IMETHODIMP
|
|
PresShell::PageMove(bool aForward, bool aExtend)
|
|
{
|
|
nsIScrollableFrame *scrollableFrame =
|
|
GetFrameToScrollAsScrollable(nsIPresShell::eVertical);
|
|
if (!scrollableFrame)
|
|
return NS_OK;
|
|
|
|
mSelection->CommonPageMove(aForward, aExtend, scrollableFrame);
|
|
// After ScrollSelectionIntoView(), the pending notifications might be
|
|
// flushed and PresShell/PresContext/Frames may be dead. See bug 418470.
|
|
return ScrollSelectionIntoView(nsISelectionController::SELECTION_NORMAL,
|
|
nsISelectionController::SELECTION_FOCUS_REGION,
|
|
nsISelectionController::SCROLL_SYNCHRONOUS);
|
|
}
|
|
|
|
|
|
|
|
NS_IMETHODIMP
|
|
PresShell::ScrollPage(bool aForward)
|
|
{
|
|
nsIScrollableFrame* scrollFrame =
|
|
GetFrameToScrollAsScrollable(nsIPresShell::eVertical);
|
|
if (scrollFrame) {
|
|
scrollFrame->ScrollBy(nsIntPoint(0, aForward ? 1 : -1),
|
|
nsIScrollableFrame::PAGES,
|
|
nsIScrollableFrame::SMOOTH);
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
PresShell::ScrollLine(bool aForward)
|
|
{
|
|
nsIScrollableFrame* scrollFrame =
|
|
GetFrameToScrollAsScrollable(nsIPresShell::eVertical);
|
|
if (scrollFrame) {
|
|
int32_t lineCount = Preferences::GetInt("toolkit.scrollbox.verticalScrollDistance",
|
|
NS_DEFAULT_VERTICAL_SCROLL_DISTANCE);
|
|
scrollFrame->ScrollBy(nsIntPoint(0, aForward ? lineCount : -lineCount),
|
|
nsIScrollableFrame::LINES,
|
|
nsIScrollableFrame::SMOOTH);
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
PresShell::ScrollCharacter(bool aRight)
|
|
{
|
|
nsIScrollableFrame* scrollFrame =
|
|
GetFrameToScrollAsScrollable(nsIPresShell::eHorizontal);
|
|
if (scrollFrame) {
|
|
int32_t h = Preferences::GetInt("toolkit.scrollbox.horizontalScrollDistance",
|
|
NS_DEFAULT_HORIZONTAL_SCROLL_DISTANCE);
|
|
scrollFrame->ScrollBy(nsIntPoint(aRight ? h : -h, 0),
|
|
nsIScrollableFrame::LINES,
|
|
nsIScrollableFrame::SMOOTH);
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
PresShell::CompleteScroll(bool aForward)
|
|
{
|
|
nsIScrollableFrame* scrollFrame =
|
|
GetFrameToScrollAsScrollable(nsIPresShell::eVertical);
|
|
if (scrollFrame) {
|
|
scrollFrame->ScrollBy(nsIntPoint(0, aForward ? 1 : -1),
|
|
nsIScrollableFrame::WHOLE,
|
|
nsIScrollableFrame::SMOOTH);
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
PresShell::CompleteMove(bool aForward, bool aExtend)
|
|
{
|
|
// Beware! This may flush notifications via synchronous
|
|
// ScrollSelectionIntoView.
|
|
nsIContent* limiter = mSelection->GetAncestorLimiter();
|
|
nsIFrame* frame = limiter ? limiter->GetPrimaryFrame()
|
|
: FrameConstructor()->GetRootElementFrame();
|
|
if (!frame)
|
|
return NS_ERROR_FAILURE;
|
|
nsIFrame::CaretPosition pos =
|
|
frame->GetExtremeCaretPosition(!aForward);
|
|
mSelection->HandleClick(pos.mResultContent, pos.mContentOffset,
|
|
pos.mContentOffset, aExtend, false, aForward);
|
|
if (limiter) {
|
|
// HandleClick resets ancestorLimiter, so set it again.
|
|
mSelection->SetAncestorLimiter(limiter);
|
|
}
|
|
|
|
// After ScrollSelectionIntoView(), the pending notifications might be
|
|
// flushed and PresShell/PresContext/Frames may be dead. See bug 418470.
|
|
return ScrollSelectionIntoView(nsISelectionController::SELECTION_NORMAL,
|
|
nsISelectionController::SELECTION_FOCUS_REGION,
|
|
nsISelectionController::SCROLL_SYNCHRONOUS);
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
PresShell::SelectAll()
|
|
{
|
|
return mSelection->SelectAll();
|
|
}
|
|
|
|
static void
|
|
DoCheckVisibility(nsPresContext* aPresContext,
|
|
nsIContent* aNode,
|
|
int16_t aStartOffset,
|
|
int16_t aEndOffset,
|
|
bool* aRetval)
|
|
{
|
|
nsIFrame* frame = aNode->GetPrimaryFrame();
|
|
if (!frame) {
|
|
// No frame to look at so it must not be visible.
|
|
return;
|
|
}
|
|
|
|
// Start process now to go through all frames to find startOffset. Then check
|
|
// chars after that to see if anything until EndOffset is visible.
|
|
bool finished = false;
|
|
frame->CheckVisibility(aPresContext, aStartOffset, aEndOffset, true,
|
|
&finished, aRetval);
|
|
// Don't worry about other return value.
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
PresShell::CheckVisibility(nsIDOMNode *node, int16_t startOffset, int16_t EndOffset, bool *_retval)
|
|
{
|
|
if (!node || startOffset>EndOffset || !_retval || startOffset<0 || EndOffset<0)
|
|
return NS_ERROR_INVALID_ARG;
|
|
*_retval = false; //initialize return parameter
|
|
nsCOMPtr<nsIContent> content(do_QueryInterface(node));
|
|
if (!content)
|
|
return NS_ERROR_FAILURE;
|
|
|
|
DoCheckVisibility(mPresContext, content, startOffset, EndOffset, _retval);
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult
|
|
PresShell::CheckVisibilityContent(nsIContent* aNode, int16_t aStartOffset,
|
|
int16_t aEndOffset, bool* aRetval)
|
|
{
|
|
if (!aNode || aStartOffset > aEndOffset || !aRetval ||
|
|
aStartOffset < 0 || aEndOffset < 0) {
|
|
return NS_ERROR_INVALID_ARG;
|
|
}
|
|
|
|
*aRetval = false;
|
|
DoCheckVisibility(mPresContext, aNode, aStartOffset, aEndOffset, aRetval);
|
|
return NS_OK;
|
|
}
|
|
|
|
//end implementations nsISelectionController
|
|
|
|
nsIFrame*
|
|
nsIPresShell::GetRootFrameExternal() const
|
|
{
|
|
return mFrameConstructor->GetRootFrame();
|
|
}
|
|
|
|
nsIFrame*
|
|
nsIPresShell::GetRootScrollFrame() const
|
|
{
|
|
nsIFrame* rootFrame = mFrameConstructor->GetRootFrame();
|
|
// Ensure root frame is a viewport frame
|
|
if (!rootFrame || nsGkAtoms::viewportFrame != rootFrame->GetType())
|
|
return nullptr;
|
|
nsIFrame* theFrame = rootFrame->GetFirstPrincipalChild();
|
|
if (!theFrame || nsGkAtoms::scrollFrame != theFrame->GetType())
|
|
return nullptr;
|
|
return theFrame;
|
|
}
|
|
|
|
nsIScrollableFrame*
|
|
nsIPresShell::GetRootScrollFrameAsScrollable() const
|
|
{
|
|
nsIFrame* frame = GetRootScrollFrame();
|
|
if (!frame)
|
|
return nullptr;
|
|
nsIScrollableFrame* scrollableFrame = do_QueryFrame(frame);
|
|
NS_ASSERTION(scrollableFrame,
|
|
"All scroll frames must implement nsIScrollableFrame");
|
|
return scrollableFrame;
|
|
}
|
|
|
|
nsIScrollableFrame*
|
|
nsIPresShell::GetRootScrollFrameAsScrollableExternal() const
|
|
{
|
|
return GetRootScrollFrameAsScrollable();
|
|
}
|
|
|
|
nsIPageSequenceFrame*
|
|
PresShell::GetPageSequenceFrame() const
|
|
{
|
|
nsIFrame* frame = mFrameConstructor->GetPageSequenceFrame();
|
|
return do_QueryFrame(frame);
|
|
}
|
|
|
|
void
|
|
PresShell::BeginUpdate(nsIDocument *aDocument, nsUpdateType aUpdateType)
|
|
{
|
|
#ifdef DEBUG
|
|
mUpdateCount++;
|
|
#endif
|
|
mFrameConstructor->BeginUpdate();
|
|
|
|
if (aUpdateType & UPDATE_STYLE)
|
|
mStyleSet->BeginUpdate();
|
|
}
|
|
|
|
void
|
|
PresShell::EndUpdate(nsIDocument *aDocument, nsUpdateType aUpdateType)
|
|
{
|
|
#ifdef DEBUG
|
|
NS_PRECONDITION(0 != mUpdateCount, "too many EndUpdate's");
|
|
--mUpdateCount;
|
|
#endif
|
|
|
|
if (aUpdateType & UPDATE_STYLE) {
|
|
mStyleSet->EndUpdate();
|
|
if (mStylesHaveChanged || !mChangedScopeStyleRoots.IsEmpty())
|
|
ReconstructStyleData();
|
|
}
|
|
|
|
mFrameConstructor->EndUpdate();
|
|
}
|
|
|
|
void
|
|
PresShell::RestoreRootScrollPosition()
|
|
{
|
|
nsIScrollableFrame* scrollableFrame = GetRootScrollFrameAsScrollable();
|
|
if (scrollableFrame) {
|
|
scrollableFrame->ScrollToRestoredPosition();
|
|
}
|
|
}
|
|
|
|
void
|
|
PresShell::BeginLoad(nsIDocument *aDocument)
|
|
{
|
|
mDocumentLoading = true;
|
|
}
|
|
|
|
void
|
|
PresShell::EndLoad(nsIDocument *aDocument)
|
|
{
|
|
NS_PRECONDITION(aDocument == mDocument, "Wrong document");
|
|
|
|
RestoreRootScrollPosition();
|
|
|
|
mDocumentLoading = false;
|
|
}
|
|
|
|
#ifdef DEBUG
|
|
void
|
|
PresShell::VerifyHasDirtyRootAncestor(nsIFrame* aFrame)
|
|
{
|
|
// XXXbz due to bug 372769, can't actually assert anything here...
|
|
return;
|
|
|
|
// XXXbz shouldn't need this part; remove it once FrameNeedsReflow
|
|
// handles the root frame correctly.
|
|
if (!aFrame->GetParent()) {
|
|
return;
|
|
}
|
|
|
|
// Make sure that there is a reflow root ancestor of |aFrame| that's
|
|
// in mDirtyRoots already.
|
|
while (aFrame && (aFrame->GetStateBits() & NS_FRAME_HAS_DIRTY_CHILDREN)) {
|
|
if (((aFrame->GetStateBits() & NS_FRAME_REFLOW_ROOT) ||
|
|
!aFrame->GetParent()) &&
|
|
mDirtyRoots.Contains(aFrame)) {
|
|
return;
|
|
}
|
|
|
|
aFrame = aFrame->GetParent();
|
|
}
|
|
NS_NOTREACHED("Frame has dirty bits set but isn't scheduled to be "
|
|
"reflowed?");
|
|
}
|
|
#endif
|
|
|
|
void
|
|
PresShell::FrameNeedsReflow(nsIFrame *aFrame, IntrinsicDirty aIntrinsicDirty,
|
|
nsFrameState aBitToAdd)
|
|
{
|
|
NS_PRECONDITION(aBitToAdd == NS_FRAME_IS_DIRTY ||
|
|
aBitToAdd == NS_FRAME_HAS_DIRTY_CHILDREN,
|
|
"Unexpected bits being added");
|
|
NS_PRECONDITION(aIntrinsicDirty != eStyleChange ||
|
|
aBitToAdd == NS_FRAME_IS_DIRTY,
|
|
"bits don't correspond to style change reason");
|
|
|
|
NS_ASSERTION(!mIsReflowing, "can't mark frame dirty during reflow");
|
|
|
|
// If we've not yet done the initial reflow, then don't bother
|
|
// enqueuing a reflow command yet.
|
|
if (! mDidInitialize)
|
|
return;
|
|
|
|
// If we're already destroying, don't bother with this either.
|
|
if (mIsDestroying)
|
|
return;
|
|
|
|
#ifdef DEBUG
|
|
//printf("gShellCounter: %d\n", gShellCounter++);
|
|
if (mInVerifyReflow)
|
|
return;
|
|
|
|
if (VERIFY_REFLOW_NOISY_RC & gVerifyReflowFlags) {
|
|
printf("\nPresShell@%p: frame %p needs reflow\n", (void*)this, (void*)aFrame);
|
|
if (VERIFY_REFLOW_REALLY_NOISY_RC & gVerifyReflowFlags) {
|
|
printf("Current content model:\n");
|
|
Element *rootElement = mDocument->GetRootElement();
|
|
if (rootElement) {
|
|
rootElement->List(stdout, 0);
|
|
}
|
|
}
|
|
}
|
|
#endif
|
|
|
|
nsAutoTArray<nsIFrame*, 4> subtrees;
|
|
subtrees.AppendElement(aFrame);
|
|
|
|
do {
|
|
nsIFrame *subtreeRoot = subtrees.ElementAt(subtrees.Length() - 1);
|
|
subtrees.RemoveElementAt(subtrees.Length() - 1);
|
|
|
|
// Grab |wasDirty| now so we can go ahead and update the bits on
|
|
// subtreeRoot.
|
|
bool wasDirty = NS_SUBTREE_DIRTY(subtreeRoot);
|
|
subtreeRoot->AddStateBits(aBitToAdd);
|
|
|
|
// Now if subtreeRoot is a reflow root we can cut off this reflow at it if
|
|
// the bit being added is NS_FRAME_HAS_DIRTY_CHILDREN.
|
|
bool targetFrameDirty = (aBitToAdd == NS_FRAME_IS_DIRTY);
|
|
|
|
#define FRAME_IS_REFLOW_ROOT(_f) \
|
|
((_f->GetStateBits() & NS_FRAME_REFLOW_ROOT) && \
|
|
(_f != subtreeRoot || !targetFrameDirty))
|
|
|
|
|
|
// Mark the intrinsic widths as dirty on the frame, all of its ancestors,
|
|
// and all of its descendants, if needed:
|
|
|
|
if (aIntrinsicDirty != eResize) {
|
|
// Mark argument and all ancestors dirty. (Unless we hit a reflow
|
|
// root that should contain the reflow. That root could be
|
|
// subtreeRoot itself if it's not dirty, or it could be some
|
|
// ancestor of subtreeRoot.)
|
|
for (nsIFrame *a = subtreeRoot;
|
|
a && !FRAME_IS_REFLOW_ROOT(a);
|
|
a = a->GetParent())
|
|
a->MarkIntrinsicWidthsDirty();
|
|
}
|
|
|
|
if (aIntrinsicDirty == eStyleChange) {
|
|
// Mark all descendants dirty (using an nsTArray stack rather than
|
|
// recursion).
|
|
// Note that nsHTMLReflowState::InitResizeFlags has some similar
|
|
// code; see comments there for how and why it differs.
|
|
nsAutoTArray<nsIFrame*, 32> stack;
|
|
stack.AppendElement(subtreeRoot);
|
|
|
|
do {
|
|
nsIFrame *f = stack.ElementAt(stack.Length() - 1);
|
|
stack.RemoveElementAt(stack.Length() - 1);
|
|
|
|
if (f->GetType() == nsGkAtoms::placeholderFrame) {
|
|
nsIFrame *oof = nsPlaceholderFrame::GetRealFrameForPlaceholder(f);
|
|
if (!nsLayoutUtils::IsProperAncestorFrame(subtreeRoot, oof)) {
|
|
// We have another distinct subtree we need to mark.
|
|
subtrees.AppendElement(oof);
|
|
}
|
|
}
|
|
|
|
nsIFrame::ChildListIterator lists(f);
|
|
for (; !lists.IsDone(); lists.Next()) {
|
|
nsFrameList::Enumerator childFrames(lists.CurrentList());
|
|
for (; !childFrames.AtEnd(); childFrames.Next()) {
|
|
nsIFrame* kid = childFrames.get();
|
|
kid->MarkIntrinsicWidthsDirty();
|
|
stack.AppendElement(kid);
|
|
}
|
|
}
|
|
} while (stack.Length() != 0);
|
|
}
|
|
|
|
// Set NS_FRAME_HAS_DIRTY_CHILDREN bits (via nsIFrame::ChildIsDirty)
|
|
// up the tree until we reach either a frame that's already dirty or
|
|
// a reflow root.
|
|
nsIFrame *f = subtreeRoot;
|
|
for (;;) {
|
|
if (FRAME_IS_REFLOW_ROOT(f) || !f->GetParent()) {
|
|
// we've hit a reflow root or the root frame
|
|
if (!wasDirty) {
|
|
mDirtyRoots.AppendElement(f);
|
|
mDocument->SetNeedLayoutFlush();
|
|
}
|
|
#ifdef DEBUG
|
|
else {
|
|
VerifyHasDirtyRootAncestor(f);
|
|
}
|
|
#endif
|
|
|
|
break;
|
|
}
|
|
|
|
nsIFrame *child = f;
|
|
f = f->GetParent();
|
|
wasDirty = NS_SUBTREE_DIRTY(f);
|
|
f->ChildIsDirty(child);
|
|
NS_ASSERTION(f->GetStateBits() & NS_FRAME_HAS_DIRTY_CHILDREN,
|
|
"ChildIsDirty didn't do its job");
|
|
if (wasDirty) {
|
|
// This frame was already marked dirty.
|
|
#ifdef DEBUG
|
|
VerifyHasDirtyRootAncestor(f);
|
|
#endif
|
|
break;
|
|
}
|
|
}
|
|
} while (subtrees.Length() != 0);
|
|
|
|
MaybeScheduleReflow();
|
|
}
|
|
|
|
void
|
|
PresShell::FrameNeedsToContinueReflow(nsIFrame *aFrame)
|
|
{
|
|
NS_ASSERTION(mIsReflowing, "Must be in reflow when marking path dirty.");
|
|
NS_PRECONDITION(mCurrentReflowRoot, "Must have a current reflow root here");
|
|
NS_ASSERTION(aFrame == mCurrentReflowRoot ||
|
|
nsLayoutUtils::IsProperAncestorFrame(mCurrentReflowRoot, aFrame),
|
|
"Frame passed in is not the descendant of mCurrentReflowRoot");
|
|
NS_ASSERTION(aFrame->GetStateBits() & NS_FRAME_IN_REFLOW,
|
|
"Frame passed in not in reflow?");
|
|
|
|
mFramesToDirty.PutEntry(aFrame);
|
|
}
|
|
|
|
nsIScrollableFrame*
|
|
nsIPresShell::GetFrameToScrollAsScrollable(
|
|
nsIPresShell::ScrollDirection aDirection)
|
|
{
|
|
nsIScrollableFrame* scrollFrame = nullptr;
|
|
|
|
nsCOMPtr<nsIContent> focusedContent;
|
|
nsIFocusManager* fm = nsFocusManager::GetFocusManager();
|
|
if (fm && mDocument) {
|
|
nsCOMPtr<nsIDOMWindow> window = do_QueryInterface(mDocument->GetWindow());
|
|
|
|
nsCOMPtr<nsIDOMElement> focusedElement;
|
|
fm->GetFocusedElementForWindow(window, false, nullptr, getter_AddRefs(focusedElement));
|
|
focusedContent = do_QueryInterface(focusedElement);
|
|
}
|
|
if (!focusedContent && mSelection) {
|
|
nsISelection* domSelection = mSelection->
|
|
GetSelection(nsISelectionController::SELECTION_NORMAL);
|
|
if (domSelection) {
|
|
nsCOMPtr<nsIDOMNode> focusedNode;
|
|
domSelection->GetFocusNode(getter_AddRefs(focusedNode));
|
|
focusedContent = do_QueryInterface(focusedNode);
|
|
}
|
|
}
|
|
if (focusedContent) {
|
|
nsIFrame* startFrame = focusedContent->GetPrimaryFrame();
|
|
if (startFrame) {
|
|
scrollFrame = startFrame->GetScrollTargetFrame();
|
|
if (scrollFrame) {
|
|
startFrame = scrollFrame->GetScrolledFrame();
|
|
}
|
|
if (aDirection == nsIPresShell::eEither) {
|
|
scrollFrame =
|
|
nsLayoutUtils::GetNearestScrollableFrame(startFrame);
|
|
} else {
|
|
scrollFrame =
|
|
nsLayoutUtils::GetNearestScrollableFrameForDirection(startFrame,
|
|
aDirection == eVertical ? nsLayoutUtils::eVertical :
|
|
nsLayoutUtils::eHorizontal);
|
|
}
|
|
}
|
|
}
|
|
if (!scrollFrame) {
|
|
scrollFrame = GetRootScrollFrameAsScrollable();
|
|
}
|
|
return scrollFrame;
|
|
}
|
|
|
|
void
|
|
PresShell::CancelAllPendingReflows()
|
|
{
|
|
mDirtyRoots.Clear();
|
|
|
|
if (mReflowScheduled) {
|
|
GetPresContext()->RefreshDriver()->RemoveLayoutFlushObserver(this);
|
|
mReflowScheduled = false;
|
|
}
|
|
|
|
ASSERT_REFLOW_SCHEDULED_STATE();
|
|
}
|
|
|
|
nsresult
|
|
PresShell::RecreateFramesFor(nsIContent* aContent)
|
|
{
|
|
NS_ENSURE_TRUE(mPresContext, NS_ERROR_FAILURE);
|
|
if (!mDidInitialize) {
|
|
// Nothing to do here. In fact, if we proceed and aContent is the
|
|
// root we will crash.
|
|
return NS_OK;
|
|
}
|
|
|
|
// Don't call RecreateFramesForContent since that is not exported and we want
|
|
// to keep the number of entrypoints down.
|
|
|
|
NS_ASSERTION(mViewManager, "Should have view manager");
|
|
|
|
// Have to make sure that the content notifications are flushed before we
|
|
// start messing with the frame model; otherwise we can get content doubling.
|
|
mDocument->FlushPendingNotifications(Flush_ContentAndNotify);
|
|
|
|
nsAutoScriptBlocker scriptBlocker;
|
|
|
|
nsStyleChangeList changeList;
|
|
changeList.AppendChange(nullptr, aContent, nsChangeHint_ReconstructFrame);
|
|
|
|
// Mark ourselves as not safe to flush while we're doing frame construction.
|
|
++mChangeNestCount;
|
|
RestyleManager* restyleManager = mPresContext->RestyleManager();
|
|
nsresult rv = restyleManager->ProcessRestyledFrames(changeList);
|
|
restyleManager->FlushOverflowChangedTracker();
|
|
--mChangeNestCount;
|
|
|
|
return rv;
|
|
}
|
|
|
|
void
|
|
nsIPresShell::PostRecreateFramesFor(Element* aElement)
|
|
{
|
|
mPresContext->RestyleManager()->PostRestyleEvent(aElement, nsRestyleHint(0),
|
|
nsChangeHint_ReconstructFrame);
|
|
}
|
|
|
|
void
|
|
nsIPresShell::RestyleForAnimation(Element* aElement, nsRestyleHint aHint)
|
|
{
|
|
mPresContext->RestyleManager()->PostAnimationRestyleEvent(aElement, aHint,
|
|
NS_STYLE_HINT_NONE);
|
|
}
|
|
|
|
void
|
|
PresShell::ClearFrameRefs(nsIFrame* aFrame)
|
|
{
|
|
mPresContext->EventStateManager()->ClearFrameRefs(aFrame);
|
|
|
|
nsWeakFrame* weakFrame = mWeakFrames;
|
|
while (weakFrame) {
|
|
nsWeakFrame* prev = weakFrame->GetPreviousWeakFrame();
|
|
if (weakFrame->GetFrame() == aFrame) {
|
|
// This removes weakFrame from mWeakFrames.
|
|
weakFrame->Clear(this);
|
|
}
|
|
weakFrame = prev;
|
|
}
|
|
}
|
|
|
|
already_AddRefed<nsRenderingContext>
|
|
PresShell::GetReferenceRenderingContext()
|
|
{
|
|
nsDeviceContext* devCtx = mPresContext->DeviceContext();
|
|
nsRefPtr<nsRenderingContext> rc;
|
|
if (mPresContext->IsScreen()) {
|
|
rc = new nsRenderingContext();
|
|
rc->Init(devCtx, gfxPlatform::GetPlatform()->ScreenReferenceSurface());
|
|
} else {
|
|
devCtx->CreateRenderingContext(*getter_AddRefs(rc));
|
|
}
|
|
return rc.forget();
|
|
}
|
|
|
|
nsresult
|
|
PresShell::GoToAnchor(const nsAString& aAnchorName, bool aScroll)
|
|
{
|
|
if (!mDocument) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
const Element *root = mDocument->GetRootElement();
|
|
if (root && root->IsSVG(nsGkAtoms::svg)) {
|
|
// We need to execute this even if there is an empty anchor name
|
|
// so that any existing SVG fragment identifier effect is removed
|
|
if (SVGFragmentIdentifier::ProcessFragmentIdentifier(mDocument, aAnchorName)) {
|
|
return NS_OK;
|
|
}
|
|
}
|
|
|
|
// Hold a reference to the ESM in case event dispatch tears us down.
|
|
nsRefPtr<nsEventStateManager> esm = mPresContext->EventStateManager();
|
|
|
|
if (aAnchorName.IsEmpty()) {
|
|
NS_ASSERTION(!aScroll, "can't scroll to empty anchor name");
|
|
esm->SetContentState(nullptr, NS_EVENT_STATE_URLTARGET);
|
|
return NS_OK;
|
|
}
|
|
|
|
nsCOMPtr<nsIDOMHTMLDocument> htmlDoc = do_QueryInterface(mDocument);
|
|
nsresult rv = NS_OK;
|
|
nsCOMPtr<nsIContent> content;
|
|
|
|
// Search for an element with a matching "id" attribute
|
|
if (mDocument) {
|
|
content = mDocument->GetElementById(aAnchorName);
|
|
}
|
|
|
|
// Search for an anchor element with a matching "name" attribute
|
|
if (!content && htmlDoc) {
|
|
nsCOMPtr<nsIDOMNodeList> list;
|
|
// Find a matching list of named nodes
|
|
rv = htmlDoc->GetElementsByName(aAnchorName, getter_AddRefs(list));
|
|
if (NS_SUCCEEDED(rv) && list) {
|
|
uint32_t i;
|
|
// Loop through the named nodes looking for the first anchor
|
|
for (i = 0; true; i++) {
|
|
nsCOMPtr<nsIDOMNode> node;
|
|
rv = list->Item(i, getter_AddRefs(node));
|
|
if (!node) { // End of list
|
|
break;
|
|
}
|
|
// Ensure it's an anchor element
|
|
content = do_QueryInterface(node);
|
|
if (content) {
|
|
if (content->Tag() == nsGkAtoms::a && content->IsHTML()) {
|
|
break;
|
|
}
|
|
content = nullptr;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// Search for anchor in the HTML namespace with a matching name
|
|
if (!content && !htmlDoc)
|
|
{
|
|
nsCOMPtr<nsIDOMDocument> doc = do_QueryInterface(mDocument);
|
|
nsCOMPtr<nsIDOMNodeList> list;
|
|
NS_NAMED_LITERAL_STRING(nameSpace, "http://www.w3.org/1999/xhtml");
|
|
// Get the list of anchor elements
|
|
rv = doc->GetElementsByTagNameNS(nameSpace, NS_LITERAL_STRING("a"), getter_AddRefs(list));
|
|
if (NS_SUCCEEDED(rv) && list) {
|
|
uint32_t i;
|
|
// Loop through the named nodes looking for the first anchor
|
|
for (i = 0; true; i++) {
|
|
nsCOMPtr<nsIDOMNode> node;
|
|
rv = list->Item(i, getter_AddRefs(node));
|
|
if (!node) { // End of list
|
|
break;
|
|
}
|
|
// Compare the name attribute
|
|
nsCOMPtr<nsIDOMElement> element = do_QueryInterface(node);
|
|
nsAutoString value;
|
|
if (element && NS_SUCCEEDED(element->GetAttribute(NS_LITERAL_STRING("name"), value))) {
|
|
if (value.Equals(aAnchorName)) {
|
|
content = do_QueryInterface(element);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
esm->SetContentState(content, NS_EVENT_STATE_URLTARGET);
|
|
|
|
#ifdef ACCESSIBILITY
|
|
nsIContent *anchorTarget = content;
|
|
#endif
|
|
|
|
nsIScrollableFrame* rootScroll = GetRootScrollFrameAsScrollable();
|
|
if (rootScroll && rootScroll->DidHistoryRestore()) {
|
|
// Scroll position restored from history trumps scrolling to anchor.
|
|
aScroll = false;
|
|
rootScroll->ClearDidHistoryRestore();
|
|
}
|
|
|
|
if (content) {
|
|
if (aScroll) {
|
|
rv = ScrollContentIntoView(content,
|
|
ScrollAxis(SCROLL_TOP, SCROLL_ALWAYS),
|
|
ScrollAxis(),
|
|
ANCHOR_SCROLL_FLAGS);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
nsIScrollableFrame* rootScroll = GetRootScrollFrameAsScrollable();
|
|
if (rootScroll) {
|
|
mLastAnchorScrolledTo = content;
|
|
mLastAnchorScrollPositionY = rootScroll->GetScrollPosition().y;
|
|
}
|
|
}
|
|
|
|
// Should we select the target? This action is controlled by a
|
|
// preference: the default is to not select.
|
|
bool selectAnchor = Preferences::GetBool("layout.selectanchor");
|
|
|
|
// Even if select anchor pref is false, we must still move the
|
|
// caret there. That way tabbing will start from the new
|
|
// location
|
|
nsRefPtr<nsIDOMRange> jumpToRange = new nsRange(mDocument);
|
|
while (content && content->GetFirstChild()) {
|
|
content = content->GetFirstChild();
|
|
}
|
|
nsCOMPtr<nsIDOMNode> node(do_QueryInterface(content));
|
|
NS_ASSERTION(node, "No nsIDOMNode for descendant of anchor");
|
|
jumpToRange->SelectNodeContents(node);
|
|
// Select the anchor
|
|
nsISelection* sel = mSelection->
|
|
GetSelection(nsISelectionController::SELECTION_NORMAL);
|
|
if (sel) {
|
|
sel->RemoveAllRanges();
|
|
sel->AddRange(jumpToRange);
|
|
if (!selectAnchor) {
|
|
// Use a caret (collapsed selection) at the start of the anchor
|
|
sel->CollapseToStart();
|
|
}
|
|
}
|
|
// Selection is at anchor.
|
|
// Now focus the document itself if focus is on an element within it.
|
|
nsPIDOMWindow *win = mDocument->GetWindow();
|
|
|
|
nsIFocusManager* fm = nsFocusManager::GetFocusManager();
|
|
if (fm && win) {
|
|
nsCOMPtr<nsIDOMWindow> focusedWindow;
|
|
fm->GetFocusedWindow(getter_AddRefs(focusedWindow));
|
|
if (SameCOMIdentity(win, focusedWindow)) {
|
|
fm->ClearFocus(focusedWindow);
|
|
}
|
|
}
|
|
|
|
// If the target is an animation element, activate the animation
|
|
if (content->IsNodeOfType(nsINode::eANIMATION)) {
|
|
SVGContentUtils::ActivateByHyperlink(content.get());
|
|
}
|
|
} else {
|
|
rv = NS_ERROR_FAILURE;
|
|
NS_NAMED_LITERAL_STRING(top, "top");
|
|
if (nsContentUtils::EqualsIgnoreASCIICase(aAnchorName, top)) {
|
|
// Scroll to the top/left if aAnchorName is "top" and there is no element
|
|
// with such a name or id.
|
|
rv = NS_OK;
|
|
nsIScrollableFrame* sf = GetRootScrollFrameAsScrollable();
|
|
// Check |aScroll| after setting |rv| so we set |rv| to the same
|
|
// thing whether or not |aScroll| is true.
|
|
if (aScroll && sf) {
|
|
// Scroll to the top of the page
|
|
sf->ScrollTo(nsPoint(0, 0), nsIScrollableFrame::INSTANT);
|
|
}
|
|
}
|
|
}
|
|
|
|
#ifdef ACCESSIBILITY
|
|
if (anchorTarget) {
|
|
nsAccessibilityService* accService = AccService();
|
|
if (accService)
|
|
accService->NotifyOfAnchorJumpTo(anchorTarget);
|
|
}
|
|
#endif
|
|
|
|
return rv;
|
|
}
|
|
|
|
nsresult
|
|
PresShell::ScrollToAnchor()
|
|
{
|
|
if (!mLastAnchorScrolledTo) {
|
|
return NS_OK;
|
|
}
|
|
NS_ASSERTION(mDidInitialize, "should have done initial reflow by now");
|
|
|
|
nsIScrollableFrame* rootScroll = GetRootScrollFrameAsScrollable();
|
|
if (!rootScroll ||
|
|
mLastAnchorScrollPositionY != rootScroll->GetScrollPosition().y) {
|
|
return NS_OK;
|
|
}
|
|
nsresult rv = ScrollContentIntoView(mLastAnchorScrolledTo,
|
|
ScrollAxis(SCROLL_TOP, SCROLL_ALWAYS),
|
|
ScrollAxis(),
|
|
ANCHOR_SCROLL_FLAGS);
|
|
mLastAnchorScrolledTo = nullptr;
|
|
return rv;
|
|
}
|
|
|
|
/*
|
|
* Helper (per-continuation) for ScrollContentIntoView.
|
|
*
|
|
* @param aContainerFrame [in] the frame which aRect is relative to
|
|
* @param aFrame [in] Frame whose bounds should be unioned
|
|
* @param aUseWholeLineHeightForInlines [in] if true, then for inline frames
|
|
* we should include the top of the line in the added rectangle
|
|
* @param aRect [inout] rect into which its bounds should be unioned
|
|
* @param aHaveRect [inout] whether aRect contains data yet
|
|
* @param aPrevBlock [inout] the block aLines is a line iterator for
|
|
* @param aLines [inout] the line iterator we're using
|
|
* @param aCurLine [inout] the line to start looking from in this iterator
|
|
*/
|
|
static void
|
|
AccumulateFrameBounds(nsIFrame* aContainerFrame,
|
|
nsIFrame* aFrame,
|
|
bool aUseWholeLineHeightForInlines,
|
|
nsRect& aRect,
|
|
bool& aHaveRect,
|
|
nsIFrame*& aPrevBlock,
|
|
nsAutoLineIterator& aLines,
|
|
int32_t& aCurLine)
|
|
{
|
|
nsIFrame* frame = aFrame;
|
|
nsRect frameBounds = nsRect(nsPoint(0, 0), aFrame->GetSize());
|
|
|
|
// If this is an inline frame and either the bounds height is 0 (quirks
|
|
// layout model) or aUseWholeLineHeightForInlines is set, we need to
|
|
// change the top of the bounds to include the whole line.
|
|
if (frameBounds.height == 0 || aUseWholeLineHeightForInlines) {
|
|
nsIFrame *prevFrame = aFrame;
|
|
nsIFrame *f = aFrame;
|
|
|
|
while (f && f->IsFrameOfType(nsIFrame::eLineParticipant) &&
|
|
!f->IsTransformed() && !f->IsPositioned()) {
|
|
prevFrame = f;
|
|
f = prevFrame->GetParent();
|
|
}
|
|
|
|
if (f != aFrame &&
|
|
f &&
|
|
f->GetType() == nsGkAtoms::blockFrame) {
|
|
// find the line containing aFrame and increase the top of |offset|.
|
|
if (f != aPrevBlock) {
|
|
aLines = f->GetLineIterator();
|
|
aPrevBlock = f;
|
|
aCurLine = 0;
|
|
}
|
|
if (aLines) {
|
|
int32_t index = aLines->FindLineContaining(prevFrame, aCurLine);
|
|
if (index >= 0) {
|
|
aCurLine = index;
|
|
nsIFrame *trash1;
|
|
int32_t trash2;
|
|
nsRect lineBounds;
|
|
uint32_t trash3;
|
|
|
|
if (NS_SUCCEEDED(aLines->GetLine(index, &trash1, &trash2,
|
|
lineBounds, &trash3))) {
|
|
frameBounds += frame->GetOffsetTo(f);
|
|
frame = f;
|
|
if (lineBounds.y < frameBounds.y) {
|
|
frameBounds.height = frameBounds.YMost() - lineBounds.y;
|
|
frameBounds.y = lineBounds.y;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
nsRect transformedBounds = nsLayoutUtils::TransformFrameRectToAncestor(frame,
|
|
frameBounds, aContainerFrame);
|
|
|
|
if (aHaveRect) {
|
|
// We can't use nsRect::UnionRect since it drops empty rects on
|
|
// the floor, and we need to include them. (Thus we need
|
|
// aHaveRect to know when to drop the initial value on the floor.)
|
|
aRect.UnionRectEdges(aRect, transformedBounds);
|
|
} else {
|
|
aHaveRect = true;
|
|
aRect = transformedBounds;
|
|
}
|
|
}
|
|
|
|
static bool
|
|
ComputeNeedToScroll(nsIPresShell::WhenToScroll aWhenToScroll,
|
|
nscoord aLineSize,
|
|
nscoord aRectMin,
|
|
nscoord aRectMax,
|
|
nscoord aViewMin,
|
|
nscoord aViewMax) {
|
|
// See how the rect should be positioned vertically
|
|
if (nsIPresShell::SCROLL_ALWAYS == aWhenToScroll) {
|
|
// The caller wants the frame as visible as possible
|
|
return true;
|
|
} else if (nsIPresShell::SCROLL_IF_NOT_VISIBLE == aWhenToScroll) {
|
|
// Scroll only if no part of the frame is visible in this view
|
|
return aRectMax - aLineSize <= aViewMin ||
|
|
aRectMin + aLineSize >= aViewMax;
|
|
} else if (nsIPresShell::SCROLL_IF_NOT_FULLY_VISIBLE == aWhenToScroll) {
|
|
// Scroll only if part of the frame is hidden and more can fit in view
|
|
return !(aRectMin >= aViewMin && aRectMax <= aViewMax) &&
|
|
std::min(aViewMax, aRectMax) - std::max(aRectMin, aViewMin) < aViewMax - aViewMin;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
static nscoord
|
|
ComputeWhereToScroll(int16_t aWhereToScroll,
|
|
nscoord aOriginalCoord,
|
|
nscoord aRectMin,
|
|
nscoord aRectMax,
|
|
nscoord aViewMin,
|
|
nscoord aViewMax,
|
|
nscoord* aRangeMin,
|
|
nscoord* aRangeMax) {
|
|
nscoord resultCoord = aOriginalCoord;
|
|
// Allow the scroll operation to land anywhere that
|
|
// makes the whole rectangle visible.
|
|
if (nsIPresShell::SCROLL_MINIMUM == aWhereToScroll) {
|
|
if (aRectMin < aViewMin) {
|
|
// Scroll up so the frame's top edge is visible
|
|
resultCoord = aRectMin;
|
|
} else if (aRectMax > aViewMax) {
|
|
// Scroll down so the frame's bottom edge is visible. Make sure the
|
|
// frame's top edge is still visible
|
|
resultCoord = aOriginalCoord + aRectMax - aViewMax;
|
|
if (resultCoord > aRectMin) {
|
|
resultCoord = aRectMin;
|
|
}
|
|
}
|
|
} else {
|
|
nscoord frameAlignCoord =
|
|
NSToCoordRound(aRectMin + (aRectMax - aRectMin) * (aWhereToScroll / 100.0f));
|
|
resultCoord = NSToCoordRound(frameAlignCoord - (aViewMax - aViewMin) * (
|
|
aWhereToScroll / 100.0f));
|
|
}
|
|
nscoord scrollPortLength = aViewMax - aViewMin;
|
|
// Force the scroll range to extend to include resultCoord.
|
|
*aRangeMin = std::min(resultCoord, aRectMax - scrollPortLength);
|
|
*aRangeMax = std::max(resultCoord, aRectMin);
|
|
return resultCoord;
|
|
}
|
|
|
|
/**
|
|
* This function takes a scrollable frame, a rect in the coordinate system
|
|
* of the scrolled frame, and a desired percentage-based scroll
|
|
* position and attempts to scroll the rect to that position in the
|
|
* scrollport.
|
|
*
|
|
* This needs to work even if aRect has a width or height of zero.
|
|
*/
|
|
static void ScrollToShowRect(nsIFrame* aFrame,
|
|
nsIScrollableFrame* aFrameAsScrollable,
|
|
const nsRect& aRect,
|
|
nsIPresShell::ScrollAxis aVertical,
|
|
nsIPresShell::ScrollAxis aHorizontal,
|
|
uint32_t aFlags)
|
|
{
|
|
nsPoint scrollPt = aFrameAsScrollable->GetScrollPosition();
|
|
nsRect visibleRect(scrollPt,
|
|
aFrameAsScrollable->GetScrollPositionClampingScrollPortSize());
|
|
|
|
// If this is the root scroll frame, make sure to take into account the
|
|
// content document fixed position margins. When set, these indicate that
|
|
// chrome is obscuring the viewport.
|
|
nsRect targetRect(aRect);
|
|
nsIPresShell *presShell = aFrame->PresContext()->PresShell();
|
|
if (aFrameAsScrollable == presShell->GetRootScrollFrameAsScrollable()) {
|
|
targetRect.Inflate(presShell->GetContentDocumentFixedPositionMargins());
|
|
}
|
|
|
|
nsSize lineSize;
|
|
// Don't call GetLineScrollAmount unless we actually need it. Not only
|
|
// does this save time, but it's not safe to call GetLineScrollAmount
|
|
// during reflow (because it depends on font size inflation and doesn't
|
|
// use the in-reflow-safe font-size inflation path). If we did call it,
|
|
// it would assert and possible give the wrong result.
|
|
if (aVertical.mWhenToScroll == nsIPresShell::SCROLL_IF_NOT_VISIBLE ||
|
|
aHorizontal.mWhenToScroll == nsIPresShell::SCROLL_IF_NOT_VISIBLE) {
|
|
lineSize = aFrameAsScrollable->GetLineScrollAmount();
|
|
}
|
|
nsPresContext::ScrollbarStyles ss = aFrameAsScrollable->GetScrollbarStyles();
|
|
nsRect allowedRange(scrollPt, nsSize(0, 0));
|
|
bool needToScroll = false;
|
|
uint32_t directions = aFrameAsScrollable->GetPerceivedScrollingDirections();
|
|
|
|
if (((aFlags & nsIPresShell::SCROLL_OVERFLOW_HIDDEN) ||
|
|
ss.mVertical != NS_STYLE_OVERFLOW_HIDDEN) &&
|
|
(!aVertical.mOnlyIfPerceivedScrollableDirection ||
|
|
(directions & nsIScrollableFrame::VERTICAL))) {
|
|
|
|
if (ComputeNeedToScroll(aVertical.mWhenToScroll,
|
|
lineSize.height,
|
|
targetRect.y,
|
|
targetRect.YMost(),
|
|
visibleRect.y,
|
|
visibleRect.YMost())) {
|
|
nscoord maxHeight;
|
|
scrollPt.y = ComputeWhereToScroll(aVertical.mWhereToScroll,
|
|
scrollPt.y,
|
|
targetRect.y,
|
|
targetRect.YMost(),
|
|
visibleRect.y,
|
|
visibleRect.YMost(),
|
|
&allowedRange.y, &maxHeight);
|
|
allowedRange.height = maxHeight - allowedRange.y;
|
|
needToScroll = true;
|
|
}
|
|
}
|
|
|
|
if (((aFlags & nsIPresShell::SCROLL_OVERFLOW_HIDDEN) ||
|
|
ss.mHorizontal != NS_STYLE_OVERFLOW_HIDDEN) &&
|
|
(!aHorizontal.mOnlyIfPerceivedScrollableDirection ||
|
|
(directions & nsIScrollableFrame::HORIZONTAL))) {
|
|
|
|
if (ComputeNeedToScroll(aHorizontal.mWhenToScroll,
|
|
lineSize.width,
|
|
targetRect.x,
|
|
targetRect.XMost(),
|
|
visibleRect.x,
|
|
visibleRect.XMost())) {
|
|
nscoord maxWidth;
|
|
scrollPt.x = ComputeWhereToScroll(aHorizontal.mWhereToScroll,
|
|
scrollPt.x,
|
|
targetRect.x,
|
|
targetRect.XMost(),
|
|
visibleRect.x,
|
|
visibleRect.XMost(),
|
|
&allowedRange.x, &maxWidth);
|
|
allowedRange.width = maxWidth - allowedRange.x;
|
|
needToScroll = true;
|
|
}
|
|
}
|
|
|
|
// If we don't need to scroll, then don't try since it might cancel
|
|
// a current smooth scroll operation.
|
|
if (needToScroll) {
|
|
aFrameAsScrollable->ScrollTo(scrollPt, nsIScrollableFrame::INSTANT, &allowedRange);
|
|
}
|
|
}
|
|
|
|
static void
|
|
DeleteScrollIntoViewData(void* aObject, nsIAtom* aPropertyName,
|
|
void* aPropertyValue, void* aData)
|
|
{
|
|
PresShell::ScrollIntoViewData* data =
|
|
static_cast<PresShell::ScrollIntoViewData*>(aPropertyValue);
|
|
delete data;
|
|
}
|
|
|
|
nsresult
|
|
PresShell::ScrollContentIntoView(nsIContent* aContent,
|
|
nsIPresShell::ScrollAxis aVertical,
|
|
nsIPresShell::ScrollAxis aHorizontal,
|
|
uint32_t aFlags)
|
|
{
|
|
NS_ENSURE_TRUE(aContent, NS_ERROR_NULL_POINTER);
|
|
nsCOMPtr<nsIDocument> currentDoc = aContent->GetCurrentDoc();
|
|
NS_ENSURE_STATE(currentDoc);
|
|
|
|
NS_ASSERTION(mDidInitialize, "should have done initial reflow by now");
|
|
|
|
if (mContentToScrollTo) {
|
|
mContentToScrollTo->DeleteProperty(nsGkAtoms::scrolling);
|
|
}
|
|
mContentToScrollTo = aContent;
|
|
ScrollIntoViewData* data = new ScrollIntoViewData();
|
|
data->mContentScrollVAxis = aVertical;
|
|
data->mContentScrollHAxis = aHorizontal;
|
|
data->mContentToScrollToFlags = aFlags;
|
|
if (NS_FAILED(mContentToScrollTo->SetProperty(nsGkAtoms::scrolling, data,
|
|
::DeleteScrollIntoViewData))) {
|
|
mContentToScrollTo = nullptr;
|
|
}
|
|
|
|
// Flush layout and attempt to scroll in the process.
|
|
currentDoc->SetNeedLayoutFlush();
|
|
currentDoc->FlushPendingNotifications(Flush_InterruptibleLayout);
|
|
|
|
// If mContentToScrollTo is non-null, that means we interrupted the reflow
|
|
// (or suppressed it altogether because we're suppressing interruptible
|
|
// flushes right now) and won't necessarily get the position correct, but do
|
|
// a best-effort scroll here. The other option would be to do this inside
|
|
// FlushPendingNotifications, but I'm not sure the repeated scrolling that
|
|
// could trigger if reflows keep getting interrupted would be more desirable
|
|
// than a single best-effort scroll followed by one final scroll on the first
|
|
// completed reflow.
|
|
if (mContentToScrollTo) {
|
|
DoScrollContentIntoView();
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
void
|
|
PresShell::DoScrollContentIntoView()
|
|
{
|
|
NS_ASSERTION(mDidInitialize, "should have done initial reflow by now");
|
|
|
|
nsIFrame* frame = mContentToScrollTo->GetPrimaryFrame();
|
|
if (!frame) {
|
|
mContentToScrollTo->DeleteProperty(nsGkAtoms::scrolling);
|
|
mContentToScrollTo = nullptr;
|
|
return;
|
|
}
|
|
|
|
if (frame->GetStateBits() & NS_FRAME_FIRST_REFLOW) {
|
|
// The reflow flush before this scroll got interrupted, and this frame's
|
|
// coords and size are all zero, and it has no content showing anyway.
|
|
// Don't bother scrolling to it. We'll try again when we finish up layout.
|
|
return;
|
|
}
|
|
|
|
// Make sure we skip 'frame' ... if it's scrollable, we should use its
|
|
// scrollable ancestor as the container.
|
|
nsIFrame* container =
|
|
nsLayoutUtils::GetClosestFrameOfType(frame->GetParent(), nsGkAtoms::scrollFrame);
|
|
if (!container) {
|
|
// nothing can be scrolled
|
|
return;
|
|
}
|
|
|
|
ScrollIntoViewData* data = static_cast<ScrollIntoViewData*>(
|
|
mContentToScrollTo->GetProperty(nsGkAtoms::scrolling));
|
|
if (MOZ_UNLIKELY(!data)) {
|
|
mContentToScrollTo = nullptr;
|
|
return;
|
|
}
|
|
|
|
// This is a two-step process.
|
|
// Step 1: Find the bounds of the rect we want to scroll into view. For
|
|
// example, for an inline frame we may want to scroll in the whole
|
|
// line, or we may want to scroll multiple lines into view.
|
|
// Step 2: Walk container frame and its ancestors and scroll them
|
|
// appropriately.
|
|
// frameBounds is relative to container. We're assuming
|
|
// that scrollframes don't split so every continuation of frame will
|
|
// be a descendant of container. (Things would still mostly work
|
|
// even if that assumption was false.)
|
|
nsRect frameBounds;
|
|
bool haveRect = false;
|
|
bool useWholeLineHeightForInlines =
|
|
data->mContentScrollVAxis.mWhenToScroll != nsIPresShell::SCROLL_IF_NOT_FULLY_VISIBLE;
|
|
// Reuse the same line iterator across calls to AccumulateFrameBounds. We set
|
|
// it every time we detect a new block (stored in prevBlock).
|
|
nsIFrame* prevBlock = nullptr;
|
|
nsAutoLineIterator lines;
|
|
// The last line we found a continuation on in |lines|. We assume that later
|
|
// continuations cannot come on earlier lines.
|
|
int32_t curLine = 0;
|
|
do {
|
|
AccumulateFrameBounds(container, frame, useWholeLineHeightForInlines,
|
|
frameBounds, haveRect, prevBlock, lines, curLine);
|
|
} while ((frame = frame->GetNextContinuation()));
|
|
|
|
ScrollFrameRectIntoView(container, frameBounds, data->mContentScrollVAxis,
|
|
data->mContentScrollHAxis,
|
|
data->mContentToScrollToFlags);
|
|
}
|
|
|
|
bool
|
|
PresShell::ScrollFrameRectIntoView(nsIFrame* aFrame,
|
|
const nsRect& aRect,
|
|
nsIPresShell::ScrollAxis aVertical,
|
|
nsIPresShell::ScrollAxis aHorizontal,
|
|
uint32_t aFlags)
|
|
{
|
|
bool didScroll = false;
|
|
// This function needs to work even if rect has a width or height of 0.
|
|
nsRect rect = aRect;
|
|
nsIFrame* container = aFrame;
|
|
// Walk up the frame hierarchy scrolling the rect into view and
|
|
// keeping rect relative to container
|
|
do {
|
|
nsIScrollableFrame* sf = do_QueryFrame(container);
|
|
if (sf) {
|
|
nsPoint oldPosition = sf->GetScrollPosition();
|
|
ScrollToShowRect(container, sf, rect - sf->GetScrolledFrame()->GetPosition(),
|
|
aVertical, aHorizontal, aFlags);
|
|
nsPoint newPosition = sf->GetScrollPosition();
|
|
// If the scroll position increased, that means our content moved up,
|
|
// so our rect's offset should decrease
|
|
rect += oldPosition - newPosition;
|
|
|
|
if (oldPosition != newPosition) {
|
|
didScroll = true;
|
|
}
|
|
|
|
// only scroll one container when this flag is set
|
|
if (aFlags & nsIPresShell::SCROLL_FIRST_ANCESTOR_ONLY) {
|
|
break;
|
|
}
|
|
}
|
|
nsIFrame* parent;
|
|
if (container->IsTransformed()) {
|
|
container->GetTransformMatrix(nullptr, &parent);
|
|
rect = nsLayoutUtils::TransformFrameRectToAncestor(container, rect, parent);
|
|
} else {
|
|
rect += container->GetPosition();
|
|
parent = container->GetParent();
|
|
}
|
|
if (!parent && !(aFlags & nsIPresShell::SCROLL_NO_PARENT_FRAMES)) {
|
|
nsPoint extraOffset(0,0);
|
|
parent = nsLayoutUtils::GetCrossDocParentFrame(container, &extraOffset);
|
|
if (parent) {
|
|
int32_t APD = container->PresContext()->AppUnitsPerDevPixel();
|
|
int32_t parentAPD = parent->PresContext()->AppUnitsPerDevPixel();
|
|
rect = rect.ConvertAppUnitsRoundOut(APD, parentAPD);
|
|
rect += extraOffset;
|
|
}
|
|
}
|
|
container = parent;
|
|
} while (container);
|
|
|
|
return didScroll;
|
|
}
|
|
|
|
nsRectVisibility
|
|
PresShell::GetRectVisibility(nsIFrame* aFrame,
|
|
const nsRect &aRect,
|
|
nscoord aMinTwips) const
|
|
{
|
|
NS_ASSERTION(aFrame->PresContext() == GetPresContext(),
|
|
"prescontext mismatch?");
|
|
nsIFrame* rootFrame = mFrameConstructor->GetRootFrame();
|
|
NS_ASSERTION(rootFrame,
|
|
"How can someone have a frame for this presshell when there's no root?");
|
|
nsIScrollableFrame* sf = GetRootScrollFrameAsScrollable();
|
|
nsRect scrollPortRect;
|
|
if (sf) {
|
|
scrollPortRect = sf->GetScrollPortRect();
|
|
nsIFrame* f = do_QueryFrame(sf);
|
|
scrollPortRect += f->GetOffsetTo(rootFrame);
|
|
} else {
|
|
scrollPortRect = nsRect(nsPoint(0,0), rootFrame->GetSize());
|
|
}
|
|
|
|
nsRect r = aRect + aFrame->GetOffsetTo(rootFrame);
|
|
// If aRect is entirely visible then we don't need to ensure that
|
|
// at least aMinTwips of it is visible
|
|
if (scrollPortRect.Contains(r))
|
|
return nsRectVisibility_kVisible;
|
|
|
|
nsRect insetRect = scrollPortRect;
|
|
insetRect.Deflate(aMinTwips, aMinTwips);
|
|
if (r.YMost() <= insetRect.y)
|
|
return nsRectVisibility_kAboveViewport;
|
|
if (r.y >= insetRect.YMost())
|
|
return nsRectVisibility_kBelowViewport;
|
|
if (r.XMost() <= insetRect.x)
|
|
return nsRectVisibility_kLeftOfViewport;
|
|
if (r.x >= insetRect.XMost())
|
|
return nsRectVisibility_kRightOfViewport;
|
|
|
|
return nsRectVisibility_kVisible;
|
|
}
|
|
|
|
void
|
|
PresShell::ScheduleViewManagerFlush()
|
|
{
|
|
nsPresContext* presContext = GetPresContext();
|
|
if (presContext) {
|
|
presContext->RefreshDriver()->ScheduleViewManagerFlush();
|
|
}
|
|
if (mDocument) {
|
|
mDocument->SetNeedLayoutFlush();
|
|
}
|
|
}
|
|
|
|
void
|
|
PresShell::DispatchSynthMouseMove(nsGUIEvent *aEvent,
|
|
bool aFlushOnHoverChange)
|
|
{
|
|
RestyleManager* restyleManager = mPresContext->RestyleManager();
|
|
uint32_t hoverGenerationBefore = restyleManager->GetHoverGeneration();
|
|
nsEventStatus status;
|
|
nsView* targetView = nsView::GetViewFor(aEvent->widget);
|
|
if (!targetView)
|
|
return;
|
|
targetView->GetViewManager()->DispatchEvent(aEvent, targetView, &status);
|
|
if (aFlushOnHoverChange &&
|
|
hoverGenerationBefore != restyleManager->GetHoverGeneration()) {
|
|
// Flush so that the resulting reflow happens now so that our caller
|
|
// can suppress any synthesized mouse moves caused by that reflow.
|
|
FlushPendingNotifications(Flush_Layout);
|
|
}
|
|
}
|
|
|
|
void
|
|
PresShell::ClearMouseCaptureOnView(nsView* aView)
|
|
{
|
|
if (gCaptureInfo.mContent) {
|
|
if (aView) {
|
|
// if a view was specified, ensure that the captured content is within
|
|
// this view.
|
|
nsIFrame* frame = gCaptureInfo.mContent->GetPrimaryFrame();
|
|
if (frame) {
|
|
nsView* view = frame->GetClosestView();
|
|
// if there is no view, capturing won't be handled any more, so
|
|
// just release the capture.
|
|
if (view) {
|
|
do {
|
|
if (view == aView) {
|
|
NS_RELEASE(gCaptureInfo.mContent);
|
|
// the view containing the captured content likely disappeared so
|
|
// disable capture for now.
|
|
gCaptureInfo.mAllowed = false;
|
|
break;
|
|
}
|
|
|
|
view = view->GetParent();
|
|
} while (view);
|
|
// return if the view wasn't found
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
|
|
NS_RELEASE(gCaptureInfo.mContent);
|
|
}
|
|
|
|
// disable mouse capture until the next mousedown as a dialog has opened
|
|
// or a drag has started. Otherwise, someone could start capture during
|
|
// the modal dialog or drag.
|
|
gCaptureInfo.mAllowed = false;
|
|
}
|
|
|
|
void
|
|
nsIPresShell::ClearMouseCapture(nsIFrame* aFrame)
|
|
{
|
|
if (!gCaptureInfo.mContent) {
|
|
gCaptureInfo.mAllowed = false;
|
|
return;
|
|
}
|
|
|
|
// null frame argument means clear the capture
|
|
if (!aFrame) {
|
|
NS_RELEASE(gCaptureInfo.mContent);
|
|
gCaptureInfo.mAllowed = false;
|
|
return;
|
|
}
|
|
|
|
nsIFrame* capturingFrame = gCaptureInfo.mContent->GetPrimaryFrame();
|
|
if (!capturingFrame) {
|
|
NS_RELEASE(gCaptureInfo.mContent);
|
|
gCaptureInfo.mAllowed = false;
|
|
return;
|
|
}
|
|
|
|
if (nsLayoutUtils::IsAncestorFrameCrossDoc(aFrame, capturingFrame)) {
|
|
NS_RELEASE(gCaptureInfo.mContent);
|
|
gCaptureInfo.mAllowed = false;
|
|
}
|
|
}
|
|
|
|
nsresult
|
|
PresShell::CaptureHistoryState(nsILayoutHistoryState** aState)
|
|
{
|
|
NS_PRECONDITION(nullptr != aState, "null state pointer");
|
|
|
|
// We actually have to mess with the docshell here, since we want to
|
|
// store the state back in it.
|
|
// XXXbz this isn't really right, since this is being called in the
|
|
// content viewer's Hide() method... by that point the docshell's
|
|
// state could be wrong. We should sort out a better ownership
|
|
// model for the layout history state.
|
|
nsCOMPtr<nsISupports> container = mPresContext->GetContainer();
|
|
if (!container)
|
|
return NS_ERROR_FAILURE;
|
|
|
|
nsCOMPtr<nsIDocShell> docShell(do_QueryInterface(container));
|
|
if (!docShell)
|
|
return NS_ERROR_FAILURE;
|
|
|
|
nsCOMPtr<nsILayoutHistoryState> historyState;
|
|
docShell->GetLayoutHistoryState(getter_AddRefs(historyState));
|
|
if (!historyState) {
|
|
// Create the document state object
|
|
historyState = NS_NewLayoutHistoryState();
|
|
docShell->SetLayoutHistoryState(historyState);
|
|
}
|
|
|
|
*aState = historyState;
|
|
NS_IF_ADDREF(*aState);
|
|
|
|
// Capture frame state for the entire frame hierarchy
|
|
nsIFrame* rootFrame = mFrameConstructor->GetRootFrame();
|
|
if (!rootFrame) return NS_OK;
|
|
|
|
mFrameConstructor->CaptureFrameState(rootFrame, historyState);
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
void
|
|
PresShell::UnsuppressAndInvalidate()
|
|
{
|
|
// Note: We ignore the EnsureVisible check for resource documents, because
|
|
// they won't have a docshell, so they'll always fail EnsureVisible.
|
|
if ((!mDocument->IsResourceDoc() && !mPresContext->EnsureVisible()) ||
|
|
mHaveShutDown) {
|
|
// No point; we're about to be torn down anyway.
|
|
return;
|
|
}
|
|
|
|
if (!mDocument->IsResourceDoc()) {
|
|
// Notify observers that a new page is about to be drawn. Execute this
|
|
// as soon as it is safe to run JS, which is guaranteed to be before we
|
|
// go back to the event loop and actually draw the page.
|
|
nsContentUtils::AddScriptRunner(new nsBeforeFirstPaintDispatcher(mDocument));
|
|
}
|
|
|
|
mPaintingSuppressed = false;
|
|
nsIFrame* rootFrame = mFrameConstructor->GetRootFrame();
|
|
if (rootFrame) {
|
|
// let's assume that outline on a root frame is not supported
|
|
rootFrame->InvalidateFrame();
|
|
|
|
if (mCaretEnabled && mCaret) {
|
|
mCaret->CheckCaretDrawingState();
|
|
}
|
|
}
|
|
|
|
// now that painting is unsuppressed, focus may be set on the document
|
|
nsPIDOMWindow *win = mDocument->GetWindow();
|
|
if (win)
|
|
win->SetReadyForFocus();
|
|
|
|
if (!mHaveShutDown) {
|
|
SynthesizeMouseMove(false);
|
|
ScheduleImageVisibilityUpdate();
|
|
}
|
|
}
|
|
|
|
void
|
|
PresShell::UnsuppressPainting()
|
|
{
|
|
if (mPaintSuppressionTimer) {
|
|
mPaintSuppressionTimer->Cancel();
|
|
mPaintSuppressionTimer = nullptr;
|
|
}
|
|
|
|
if (mIsDocumentGone || !mPaintingSuppressed)
|
|
return;
|
|
|
|
// If we have reflows pending, just wait until we process
|
|
// the reflows and get all the frames where we want them
|
|
// before actually unlocking the painting. Otherwise
|
|
// go ahead and unlock now.
|
|
if (!mDirtyRoots.IsEmpty())
|
|
mShouldUnsuppressPainting = true;
|
|
else
|
|
UnsuppressAndInvalidate();
|
|
}
|
|
|
|
// Post a request to handle an arbitrary callback after reflow has finished.
|
|
nsresult
|
|
PresShell::PostReflowCallback(nsIReflowCallback* aCallback)
|
|
{
|
|
void* result = AllocateMisc(sizeof(nsCallbackEventRequest));
|
|
nsCallbackEventRequest* request = (nsCallbackEventRequest*)result;
|
|
|
|
request->callback = aCallback;
|
|
request->next = nullptr;
|
|
|
|
if (mLastCallbackEventRequest) {
|
|
mLastCallbackEventRequest = mLastCallbackEventRequest->next = request;
|
|
} else {
|
|
mFirstCallbackEventRequest = request;
|
|
mLastCallbackEventRequest = request;
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
void
|
|
PresShell::CancelReflowCallback(nsIReflowCallback* aCallback)
|
|
{
|
|
nsCallbackEventRequest* before = nullptr;
|
|
nsCallbackEventRequest* node = mFirstCallbackEventRequest;
|
|
while(node)
|
|
{
|
|
nsIReflowCallback* callback = node->callback;
|
|
|
|
if (callback == aCallback)
|
|
{
|
|
nsCallbackEventRequest* toFree = node;
|
|
if (node == mFirstCallbackEventRequest) {
|
|
node = node->next;
|
|
mFirstCallbackEventRequest = node;
|
|
NS_ASSERTION(before == nullptr, "impossible");
|
|
} else {
|
|
node = node->next;
|
|
before->next = node;
|
|
}
|
|
|
|
if (toFree == mLastCallbackEventRequest) {
|
|
mLastCallbackEventRequest = before;
|
|
}
|
|
|
|
FreeMisc(sizeof(nsCallbackEventRequest), toFree);
|
|
} else {
|
|
before = node;
|
|
node = node->next;
|
|
}
|
|
}
|
|
}
|
|
|
|
void
|
|
PresShell::CancelPostedReflowCallbacks()
|
|
{
|
|
while (mFirstCallbackEventRequest) {
|
|
nsCallbackEventRequest* node = mFirstCallbackEventRequest;
|
|
mFirstCallbackEventRequest = node->next;
|
|
if (!mFirstCallbackEventRequest) {
|
|
mLastCallbackEventRequest = nullptr;
|
|
}
|
|
nsIReflowCallback* callback = node->callback;
|
|
FreeMisc(sizeof(nsCallbackEventRequest), node);
|
|
if (callback) {
|
|
callback->ReflowCallbackCanceled();
|
|
}
|
|
}
|
|
}
|
|
|
|
void
|
|
PresShell::HandlePostedReflowCallbacks(bool aInterruptible)
|
|
{
|
|
bool shouldFlush = false;
|
|
|
|
while (mFirstCallbackEventRequest) {
|
|
nsCallbackEventRequest* node = mFirstCallbackEventRequest;
|
|
mFirstCallbackEventRequest = node->next;
|
|
if (!mFirstCallbackEventRequest) {
|
|
mLastCallbackEventRequest = nullptr;
|
|
}
|
|
nsIReflowCallback* callback = node->callback;
|
|
FreeMisc(sizeof(nsCallbackEventRequest), node);
|
|
if (callback) {
|
|
if (callback->ReflowFinished()) {
|
|
shouldFlush = true;
|
|
}
|
|
}
|
|
}
|
|
|
|
mozFlushType flushType =
|
|
aInterruptible ? Flush_InterruptibleLayout : Flush_Layout;
|
|
if (shouldFlush && !mIsDestroying) {
|
|
FlushPendingNotifications(flushType);
|
|
}
|
|
}
|
|
|
|
bool
|
|
PresShell::IsSafeToFlush() const
|
|
{
|
|
// Not safe if we are reflowing or in the middle of frame construction
|
|
bool isSafeToFlush = !mIsReflowing &&
|
|
!mChangeNestCount;
|
|
|
|
if (isSafeToFlush) {
|
|
// Not safe if we are painting
|
|
nsViewManager* viewManager = GetViewManager();
|
|
if (viewManager) {
|
|
bool isPainting = false;
|
|
viewManager->IsPainting(isPainting);
|
|
if (isPainting) {
|
|
isSafeToFlush = false;
|
|
}
|
|
}
|
|
}
|
|
|
|
return isSafeToFlush;
|
|
}
|
|
|
|
|
|
void
|
|
PresShell::FlushPendingNotifications(mozFlushType aType)
|
|
{
|
|
// by default, flush animations if aType >= Flush_Style
|
|
mozilla::ChangesToFlush flush(aType, aType >= Flush_Style);
|
|
FlushPendingNotifications(flush);
|
|
}
|
|
|
|
void
|
|
PresShell::FlushPendingNotifications(mozilla::ChangesToFlush aFlush)
|
|
{
|
|
if (mIsZombie) {
|
|
return;
|
|
}
|
|
|
|
/**
|
|
* VERY IMPORTANT: If you add some sort of new flushing to this
|
|
* method, make sure to add the relevant SetNeedLayoutFlush or
|
|
* SetNeedStyleFlush calls on the document.
|
|
*/
|
|
mozFlushType flushType = aFlush.mFlushType;
|
|
|
|
#ifdef MOZ_ENABLE_PROFILER_SPS
|
|
static const char flushTypeNames[][20] = {
|
|
"Content",
|
|
"ContentAndNotify",
|
|
"Style",
|
|
"InterruptibleLayout",
|
|
"Layout",
|
|
"Display"
|
|
};
|
|
|
|
// Make sure that we don't miss things added to mozFlushType!
|
|
MOZ_ASSERT(static_cast<uint32_t>(flushType) <= ArrayLength(flushTypeNames));
|
|
|
|
PROFILER_LABEL_PRINTF("layout", "Flush", "(Flush_%s)",
|
|
flushTypeNames[flushType - 1]);
|
|
#endif
|
|
|
|
#ifdef ACCESSIBILITY
|
|
#ifdef DEBUG
|
|
nsAccessibilityService* accService = GetAccService();
|
|
if (accService) {
|
|
NS_ASSERTION(!accService->IsProcessingRefreshDriverNotification(),
|
|
"Flush during accessible tree update!");
|
|
}
|
|
#endif
|
|
#endif
|
|
|
|
NS_ASSERTION(flushType >= Flush_Frames, "Why did we get called?");
|
|
|
|
bool isSafeToFlush = IsSafeToFlush();
|
|
|
|
// If layout could possibly trigger scripts, then it's only safe to flush if
|
|
// it's safe to run script.
|
|
bool hasHadScriptObject;
|
|
if (mDocument->GetScriptHandlingObject(hasHadScriptObject) ||
|
|
hasHadScriptObject) {
|
|
isSafeToFlush = isSafeToFlush && nsContentUtils::IsSafeToRunScript();
|
|
}
|
|
|
|
NS_ASSERTION(!isSafeToFlush || mViewManager, "Must have view manager");
|
|
// Make sure the view manager stays alive.
|
|
nsRefPtr<nsViewManager> viewManagerDeathGrip = mViewManager;
|
|
if (isSafeToFlush && mViewManager) {
|
|
// Processing pending notifications can kill us, and some callers only
|
|
// hold weak refs when calling FlushPendingNotifications(). :(
|
|
nsCOMPtr<nsIPresShell> kungFuDeathGrip(this);
|
|
|
|
if (mResizeEvent.IsPending()) {
|
|
FireResizeEvent();
|
|
if (mIsDestroying) {
|
|
return;
|
|
}
|
|
}
|
|
|
|
// We need to make sure external resource documents are flushed too (for
|
|
// example, svg filters that reference a filter in an external document
|
|
// need the frames in the external document to be constructed for the
|
|
// filter to work). We only need external resources to be flushed when the
|
|
// main document is flushing >= Flush_Frames, so we flush external
|
|
// resources here instead of nsDocument::FlushPendingNotifications.
|
|
mDocument->FlushExternalResources(flushType);
|
|
|
|
// Force flushing of any pending content notifications that might have
|
|
// queued up while our event was pending. That will ensure that we don't
|
|
// construct frames for content right now that's still waiting to be
|
|
// notified on,
|
|
mDocument->FlushPendingNotifications(Flush_ContentAndNotify);
|
|
|
|
// Process pending restyles, since any flush of the presshell wants
|
|
// up-to-date style data.
|
|
if (!mIsDestroying) {
|
|
mViewManager->FlushDelayedResize(false);
|
|
mPresContext->FlushPendingMediaFeatureValuesChanged();
|
|
|
|
// Flush any pending update of the user font set, since that could
|
|
// cause style changes (for updating ex/ch units, and to cause a
|
|
// reflow).
|
|
mPresContext->FlushUserFontSet();
|
|
|
|
// Flush any requested SMIL samples.
|
|
if (mDocument->HasAnimationController()) {
|
|
mDocument->GetAnimationController()->FlushResampleRequests();
|
|
}
|
|
|
|
if (aFlush.mFlushAnimations &&
|
|
nsLayoutUtils::AreAsyncAnimationsEnabled() &&
|
|
!mPresContext->StyleUpdateForAllAnimationsIsUpToDate()) {
|
|
mPresContext->AnimationManager()->
|
|
FlushAnimations(CommonAnimationManager::Cannot_Throttle);
|
|
mPresContext->TransitionManager()->
|
|
FlushTransitions(CommonAnimationManager::Cannot_Throttle);
|
|
mPresContext->TickLastStyleUpdateForAllAnimations();
|
|
}
|
|
|
|
// The FlushResampleRequests() above flushed style changes.
|
|
if (!mIsDestroying) {
|
|
nsAutoScriptBlocker scriptBlocker;
|
|
mFrameConstructor->CreateNeededFrames();
|
|
mPresContext->RestyleManager()->ProcessPendingRestyles();
|
|
}
|
|
}
|
|
|
|
// Dispatch any 'animationstart' events those (or earlier) restyles
|
|
// queued up.
|
|
if (!mIsDestroying) {
|
|
mPresContext->AnimationManager()->DispatchEvents();
|
|
}
|
|
|
|
// Process whatever XBL constructors those restyles queued up. This
|
|
// ensures that onload doesn't fire too early and that we won't do extra
|
|
// reflows after those constructors run.
|
|
if (!mIsDestroying) {
|
|
mDocument->BindingManager()->ProcessAttachedQueue();
|
|
}
|
|
|
|
// Now those constructors or events might have posted restyle
|
|
// events. At the same time, we still need up-to-date style data.
|
|
// In particular, reflow depends on style being completely up to
|
|
// date. If it's not, then style context reparenting, which can
|
|
// happen during reflow, might suddenly pick up the new rules and
|
|
// we'll end up with frames whose style doesn't match the frame
|
|
// type.
|
|
if (!mIsDestroying) {
|
|
nsAutoScriptBlocker scriptBlocker;
|
|
mFrameConstructor->CreateNeededFrames();
|
|
mPresContext->RestyleManager()->ProcessPendingRestyles();
|
|
}
|
|
|
|
|
|
// There might be more pending constructors now, but we're not going to
|
|
// worry about them. They can't be triggered during reflow, so we should
|
|
// be good.
|
|
|
|
if (flushType >= (mSuppressInterruptibleReflows ? Flush_Layout : Flush_InterruptibleLayout) &&
|
|
!mIsDestroying) {
|
|
mFrameConstructor->RecalcQuotesAndCounters();
|
|
mViewManager->FlushDelayedResize(true);
|
|
if (ProcessReflowCommands(flushType < Flush_Layout) && mContentToScrollTo) {
|
|
// We didn't get interrupted. Go ahead and scroll to our content
|
|
DoScrollContentIntoView();
|
|
if (mContentToScrollTo) {
|
|
mContentToScrollTo->DeleteProperty(nsGkAtoms::scrolling);
|
|
mContentToScrollTo = nullptr;
|
|
}
|
|
}
|
|
} else if (!mIsDestroying && mSuppressInterruptibleReflows &&
|
|
flushType == Flush_InterruptibleLayout) {
|
|
// We suppressed this flush, but the document thinks it doesn't
|
|
// need to flush anymore. Let it know what's really going on.
|
|
mDocument->SetNeedLayoutFlush();
|
|
}
|
|
|
|
if (flushType >= Flush_Layout) {
|
|
if (!mIsDestroying) {
|
|
mViewManager->UpdateWidgetGeometry();
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
void
|
|
PresShell::CharacterDataWillChange(nsIDocument *aDocument,
|
|
nsIContent* aContent,
|
|
CharacterDataChangeInfo* aInfo)
|
|
{
|
|
NS_PRECONDITION(!mIsDocumentGone, "Unexpected CharacterDataChanged");
|
|
NS_PRECONDITION(aDocument == mDocument, "Unexpected aDocument");
|
|
|
|
if (mCaret) {
|
|
// Invalidate the caret's current location before we call into the frame
|
|
// constructor. It is important to do this now, and not wait until the
|
|
// resulting reflow, because this call causes continuation frames of the
|
|
// text frame the caret is in to forget what part of the content they
|
|
// refer to, making it hard for them to return the correct continuation
|
|
// frame to the caret.
|
|
//
|
|
// It's also important to do this before the content actually changes, since
|
|
// in bidi text the caret needs to look at the content to determine its
|
|
// position and shape.
|
|
mCaret->InvalidateOutsideCaret();
|
|
}
|
|
}
|
|
|
|
void
|
|
PresShell::CharacterDataChanged(nsIDocument *aDocument,
|
|
nsIContent* aContent,
|
|
CharacterDataChangeInfo* aInfo)
|
|
{
|
|
NS_PRECONDITION(!mIsDocumentGone, "Unexpected CharacterDataChanged");
|
|
NS_PRECONDITION(aDocument == mDocument, "Unexpected aDocument");
|
|
|
|
nsAutoCauseReflowNotifier crNotifier(this);
|
|
|
|
// Call this here so it only happens for real content mutations and
|
|
// not cases when the frame constructor calls its own methods to force
|
|
// frame reconstruction.
|
|
nsIContent *container = aContent->GetParent();
|
|
uint32_t selectorFlags =
|
|
container ? (container->GetFlags() & NODE_ALL_SELECTOR_FLAGS) : 0;
|
|
if (selectorFlags != 0 && !aContent->IsRootOfAnonymousSubtree()) {
|
|
Element* element = container->AsElement();
|
|
if (aInfo->mAppend && !aContent->GetNextSibling())
|
|
mPresContext->RestyleManager()->RestyleForAppend(element, aContent);
|
|
else
|
|
mPresContext->RestyleManager()->RestyleForInsertOrChange(element, aContent);
|
|
}
|
|
|
|
mFrameConstructor->CharacterDataChanged(aContent, aInfo);
|
|
VERIFY_STYLE_TREE;
|
|
}
|
|
|
|
void
|
|
PresShell::ContentStateChanged(nsIDocument* aDocument,
|
|
nsIContent* aContent,
|
|
nsEventStates aStateMask)
|
|
{
|
|
NS_PRECONDITION(!mIsDocumentGone, "Unexpected ContentStateChanged");
|
|
NS_PRECONDITION(aDocument == mDocument, "Unexpected aDocument");
|
|
|
|
if (mDidInitialize) {
|
|
nsAutoCauseReflowNotifier crNotifier(this);
|
|
mPresContext->RestyleManager()->ContentStateChanged(aContent, aStateMask);
|
|
VERIFY_STYLE_TREE;
|
|
}
|
|
}
|
|
|
|
void
|
|
PresShell::DocumentStatesChanged(nsIDocument* aDocument,
|
|
nsEventStates aStateMask)
|
|
{
|
|
NS_PRECONDITION(!mIsDocumentGone, "Unexpected DocumentStatesChanged");
|
|
NS_PRECONDITION(aDocument == mDocument, "Unexpected aDocument");
|
|
|
|
if (mDidInitialize &&
|
|
mStyleSet->HasDocumentStateDependentStyle(mPresContext,
|
|
mDocument->GetRootElement(),
|
|
aStateMask)) {
|
|
mPresContext->RestyleManager()->PostRestyleEvent(mDocument->GetRootElement(),
|
|
eRestyle_Subtree,
|
|
NS_STYLE_HINT_NONE);
|
|
VERIFY_STYLE_TREE;
|
|
}
|
|
|
|
if (aStateMask.HasState(NS_DOCUMENT_STATE_WINDOW_INACTIVE)) {
|
|
nsIFrame* root = mFrameConstructor->GetRootFrame();
|
|
if (root) {
|
|
FrameLayerBuilder::InvalidateAllLayersForFrame(root);
|
|
if (root->HasView()) {
|
|
root->GetView()->SetForcedRepaint(true);
|
|
}
|
|
root->SchedulePaint();
|
|
}
|
|
}
|
|
}
|
|
|
|
void
|
|
PresShell::AttributeWillChange(nsIDocument* aDocument,
|
|
Element* aElement,
|
|
int32_t aNameSpaceID,
|
|
nsIAtom* aAttribute,
|
|
int32_t aModType)
|
|
{
|
|
NS_PRECONDITION(!mIsDocumentGone, "Unexpected AttributeWillChange");
|
|
NS_PRECONDITION(aDocument == mDocument, "Unexpected aDocument");
|
|
|
|
// XXXwaterson it might be more elegant to wait until after the
|
|
// initial reflow to begin observing the document. That would
|
|
// squelch any other inappropriate notifications as well.
|
|
if (mDidInitialize) {
|
|
nsAutoCauseReflowNotifier crNotifier(this);
|
|
mPresContext->RestyleManager()->AttributeWillChange(aElement, aNameSpaceID,
|
|
aAttribute, aModType);
|
|
VERIFY_STYLE_TREE;
|
|
}
|
|
}
|
|
|
|
void
|
|
PresShell::AttributeChanged(nsIDocument* aDocument,
|
|
Element* aElement,
|
|
int32_t aNameSpaceID,
|
|
nsIAtom* aAttribute,
|
|
int32_t aModType)
|
|
{
|
|
NS_PRECONDITION(!mIsDocumentGone, "Unexpected AttributeChanged");
|
|
NS_PRECONDITION(aDocument == mDocument, "Unexpected aDocument");
|
|
|
|
// XXXwaterson it might be more elegant to wait until after the
|
|
// initial reflow to begin observing the document. That would
|
|
// squelch any other inappropriate notifications as well.
|
|
if (mDidInitialize) {
|
|
nsAutoCauseReflowNotifier crNotifier(this);
|
|
mPresContext->RestyleManager()->AttributeChanged(aElement, aNameSpaceID,
|
|
aAttribute, aModType);
|
|
VERIFY_STYLE_TREE;
|
|
}
|
|
}
|
|
|
|
void
|
|
PresShell::ContentAppended(nsIDocument *aDocument,
|
|
nsIContent* aContainer,
|
|
nsIContent* aFirstNewContent,
|
|
int32_t aNewIndexInContainer)
|
|
{
|
|
NS_PRECONDITION(!mIsDocumentGone, "Unexpected ContentAppended");
|
|
NS_PRECONDITION(aDocument == mDocument, "Unexpected aDocument");
|
|
NS_PRECONDITION(aContainer, "must have container");
|
|
|
|
if (!mDidInitialize) {
|
|
return;
|
|
}
|
|
|
|
nsAutoCauseReflowNotifier crNotifier(this);
|
|
|
|
// Call this here so it only happens for real content mutations and
|
|
// not cases when the frame constructor calls its own methods to force
|
|
// frame reconstruction.
|
|
mPresContext->RestyleManager()->
|
|
RestyleForAppend(aContainer->AsElement(), aFirstNewContent);
|
|
|
|
mFrameConstructor->ContentAppended(aContainer, aFirstNewContent, true);
|
|
|
|
if (static_cast<nsINode*>(aContainer) == static_cast<nsINode*>(aDocument) &&
|
|
aFirstNewContent->NodeType() == nsIDOMNode::DOCUMENT_TYPE_NODE) {
|
|
NotifyFontSizeInflationEnabledIsDirty();
|
|
}
|
|
|
|
VERIFY_STYLE_TREE;
|
|
}
|
|
|
|
void
|
|
PresShell::ContentInserted(nsIDocument* aDocument,
|
|
nsIContent* aContainer,
|
|
nsIContent* aChild,
|
|
int32_t aIndexInContainer)
|
|
{
|
|
NS_PRECONDITION(!mIsDocumentGone, "Unexpected ContentInserted");
|
|
NS_PRECONDITION(aDocument == mDocument, "Unexpected aDocument");
|
|
|
|
if (!mDidInitialize) {
|
|
return;
|
|
}
|
|
|
|
nsAutoCauseReflowNotifier crNotifier(this);
|
|
|
|
// Call this here so it only happens for real content mutations and
|
|
// not cases when the frame constructor calls its own methods to force
|
|
// frame reconstruction.
|
|
if (aContainer) {
|
|
mPresContext->RestyleManager()->
|
|
RestyleForInsertOrChange(aContainer->AsElement(), aChild);
|
|
}
|
|
|
|
mFrameConstructor->ContentInserted(aContainer, aChild, nullptr, true);
|
|
|
|
if (((!aContainer && aDocument) ||
|
|
(static_cast<nsINode*>(aContainer) == static_cast<nsINode*>(aDocument))) &&
|
|
aChild->NodeType() == nsIDOMNode::DOCUMENT_TYPE_NODE) {
|
|
NotifyFontSizeInflationEnabledIsDirty();
|
|
}
|
|
|
|
VERIFY_STYLE_TREE;
|
|
}
|
|
|
|
void
|
|
PresShell::ContentRemoved(nsIDocument *aDocument,
|
|
nsIContent* aContainer,
|
|
nsIContent* aChild,
|
|
int32_t aIndexInContainer,
|
|
nsIContent* aPreviousSibling)
|
|
{
|
|
NS_PRECONDITION(!mIsDocumentGone, "Unexpected ContentRemoved");
|
|
NS_PRECONDITION(aDocument == mDocument, "Unexpected aDocument");
|
|
|
|
// Make sure that the caret doesn't leave a turd where the child used to be.
|
|
if (mCaret) {
|
|
mCaret->InvalidateOutsideCaret();
|
|
}
|
|
|
|
// Notify the ESM that the content has been removed, so that
|
|
// it can clean up any state related to the content.
|
|
|
|
// XXX_jwir3: There is no null check for aDocument necessary, since, even
|
|
// though by nsIMutationObserver, aDocument could be null, the
|
|
// precondition check that mDocument == aDocument ensures that
|
|
// aDocument will not be null (since mDocument can't be null unless
|
|
// we're still intializing).
|
|
mPresContext->EventStateManager()->ContentRemoved(aDocument, aChild);
|
|
|
|
nsAutoCauseReflowNotifier crNotifier(this);
|
|
|
|
// Call this here so it only happens for real content mutations and
|
|
// not cases when the frame constructor calls its own methods to force
|
|
// frame reconstruction.
|
|
nsIContent* oldNextSibling;
|
|
if (aContainer) {
|
|
oldNextSibling = aContainer->GetChildAt(aIndexInContainer);
|
|
} else {
|
|
oldNextSibling = nullptr;
|
|
}
|
|
|
|
if (aContainer && aContainer->IsElement()) {
|
|
mPresContext->RestyleManager()->
|
|
RestyleForRemove(aContainer->AsElement(), aChild, oldNextSibling);
|
|
}
|
|
|
|
bool didReconstruct;
|
|
mFrameConstructor->ContentRemoved(aContainer, aChild, oldNextSibling,
|
|
nsCSSFrameConstructor::REMOVE_CONTENT,
|
|
&didReconstruct);
|
|
|
|
|
|
if (((aContainer &&
|
|
static_cast<nsINode*>(aContainer) == static_cast<nsINode*>(aDocument)) ||
|
|
aDocument) && aChild->NodeType() == nsIDOMNode::DOCUMENT_TYPE_NODE) {
|
|
NotifyFontSizeInflationEnabledIsDirty();
|
|
}
|
|
|
|
VERIFY_STYLE_TREE;
|
|
}
|
|
|
|
nsresult
|
|
PresShell::ReconstructFrames(void)
|
|
{
|
|
NS_PRECONDITION(!mFrameConstructor->GetRootFrame() || mDidInitialize,
|
|
"Must not have root frame before initial reflow");
|
|
if (!mDidInitialize) {
|
|
// Nothing to do here
|
|
return NS_OK;
|
|
}
|
|
|
|
nsCOMPtr<nsIPresShell> kungFuDeathGrip(this);
|
|
|
|
// Have to make sure that the content notifications are flushed before we
|
|
// start messing with the frame model; otherwise we can get content doubling.
|
|
mDocument->FlushPendingNotifications(Flush_ContentAndNotify);
|
|
|
|
nsAutoCauseReflowNotifier crNotifier(this);
|
|
mFrameConstructor->BeginUpdate();
|
|
nsresult rv = mFrameConstructor->ReconstructDocElementHierarchy();
|
|
VERIFY_STYLE_TREE;
|
|
mFrameConstructor->EndUpdate();
|
|
|
|
return rv;
|
|
}
|
|
|
|
void
|
|
nsIPresShell::ReconstructStyleDataInternal()
|
|
{
|
|
nsAutoTArray<nsRefPtr<mozilla::dom::Element>,1> scopeRoots;
|
|
mChangedScopeStyleRoots.SwapElements(scopeRoots);
|
|
|
|
if (mStylesHaveChanged) {
|
|
// If we need to restyle everything, no need to restyle individual
|
|
// scoped style roots.
|
|
scopeRoots.Clear();
|
|
}
|
|
|
|
mStylesHaveChanged = false;
|
|
|
|
if (mIsDestroying) {
|
|
// We don't want to mess with restyles at this point
|
|
return;
|
|
}
|
|
|
|
if (mPresContext) {
|
|
mPresContext->RebuildUserFontSet();
|
|
mPresContext->AnimationManager()->KeyframesListIsDirty();
|
|
}
|
|
|
|
Element* root = mDocument->GetRootElement();
|
|
if (!mDidInitialize) {
|
|
// Nothing to do here, since we have no frames yet
|
|
return;
|
|
}
|
|
|
|
if (!root) {
|
|
// No content to restyle
|
|
return;
|
|
}
|
|
|
|
RestyleManager* restyleManager = mPresContext->RestyleManager();
|
|
if (scopeRoots.IsEmpty()) {
|
|
// If scopeRoots is empty, we know that mStylesHaveChanged was true at
|
|
// the beginning of this function, and that we need to restyle the whole
|
|
// document.
|
|
restyleManager->PostRestyleEvent(root, eRestyle_Subtree,
|
|
NS_STYLE_HINT_NONE);
|
|
} else {
|
|
for (uint32_t i = 0; i < scopeRoots.Length(); i++) {
|
|
Element* scopeRoot = scopeRoots[i];
|
|
restyleManager->PostRestyleEvent(scopeRoot, eRestyle_Subtree,
|
|
NS_STYLE_HINT_NONE);
|
|
}
|
|
}
|
|
}
|
|
|
|
void
|
|
nsIPresShell::ReconstructStyleDataExternal()
|
|
{
|
|
ReconstructStyleDataInternal();
|
|
}
|
|
|
|
void
|
|
PresShell::RecordStyleSheetChange(nsIStyleSheet* aStyleSheet)
|
|
{
|
|
if (mStylesHaveChanged)
|
|
return;
|
|
|
|
nsRefPtr<nsCSSStyleSheet> cssStyleSheet = do_QueryObject(aStyleSheet);
|
|
if (cssStyleSheet) {
|
|
Element* scopeElement = cssStyleSheet->GetScopeElement();
|
|
if (scopeElement) {
|
|
mChangedScopeStyleRoots.AppendElement(scopeElement);
|
|
return;
|
|
}
|
|
}
|
|
|
|
mStylesHaveChanged = true;
|
|
}
|
|
|
|
void
|
|
PresShell::StyleSheetAdded(nsIDocument *aDocument,
|
|
nsIStyleSheet* aStyleSheet,
|
|
bool aDocumentSheet)
|
|
{
|
|
// We only care when enabled sheets are added
|
|
NS_PRECONDITION(aStyleSheet, "Must have a style sheet!");
|
|
|
|
if (aStyleSheet->IsApplicable() && aStyleSheet->HasRules()) {
|
|
RecordStyleSheetChange(aStyleSheet);
|
|
}
|
|
}
|
|
|
|
void
|
|
PresShell::StyleSheetRemoved(nsIDocument *aDocument,
|
|
nsIStyleSheet* aStyleSheet,
|
|
bool aDocumentSheet)
|
|
{
|
|
// We only care when enabled sheets are removed
|
|
NS_PRECONDITION(aStyleSheet, "Must have a style sheet!");
|
|
|
|
if (aStyleSheet->IsApplicable() && aStyleSheet->HasRules()) {
|
|
RecordStyleSheetChange(aStyleSheet);
|
|
}
|
|
}
|
|
|
|
void
|
|
PresShell::StyleSheetApplicableStateChanged(nsIDocument *aDocument,
|
|
nsIStyleSheet* aStyleSheet,
|
|
bool aApplicable)
|
|
{
|
|
if (aStyleSheet->HasRules()) {
|
|
RecordStyleSheetChange(aStyleSheet);
|
|
}
|
|
}
|
|
|
|
void
|
|
PresShell::StyleRuleChanged(nsIDocument *aDocument,
|
|
nsIStyleSheet* aStyleSheet,
|
|
nsIStyleRule* aOldStyleRule,
|
|
nsIStyleRule* aNewStyleRule)
|
|
{
|
|
RecordStyleSheetChange(aStyleSheet);
|
|
}
|
|
|
|
void
|
|
PresShell::StyleRuleAdded(nsIDocument *aDocument,
|
|
nsIStyleSheet* aStyleSheet,
|
|
nsIStyleRule* aStyleRule)
|
|
{
|
|
RecordStyleSheetChange(aStyleSheet);
|
|
}
|
|
|
|
void
|
|
PresShell::StyleRuleRemoved(nsIDocument *aDocument,
|
|
nsIStyleSheet* aStyleSheet,
|
|
nsIStyleRule* aStyleRule)
|
|
{
|
|
RecordStyleSheetChange(aStyleSheet);
|
|
}
|
|
|
|
nsIFrame*
|
|
PresShell::GetRealPrimaryFrameFor(nsIContent* aContent) const
|
|
{
|
|
if (aContent->GetDocument() != GetDocument()) {
|
|
return nullptr;
|
|
}
|
|
nsIFrame *primaryFrame = aContent->GetPrimaryFrame();
|
|
if (!primaryFrame)
|
|
return nullptr;
|
|
return nsPlaceholderFrame::GetRealFrameFor(primaryFrame);
|
|
}
|
|
|
|
nsIFrame*
|
|
PresShell::GetPlaceholderFrameFor(nsIFrame* aFrame) const
|
|
{
|
|
return mFrameConstructor->GetPlaceholderFrameFor(aFrame);
|
|
}
|
|
|
|
nsresult
|
|
PresShell::RenderDocument(const nsRect& aRect, uint32_t aFlags,
|
|
nscolor aBackgroundColor,
|
|
gfxContext* aThebesContext)
|
|
{
|
|
NS_ENSURE_TRUE(!(aFlags & RENDER_IS_UNTRUSTED), NS_ERROR_NOT_IMPLEMENTED);
|
|
|
|
nsRootPresContext* rootPresContext = mPresContext->GetRootPresContext();
|
|
if (rootPresContext) {
|
|
rootPresContext->FlushWillPaintObservers();
|
|
if (mIsDestroying)
|
|
return NS_OK;
|
|
}
|
|
|
|
nsAutoScriptBlocker blockScripts;
|
|
|
|
// Set up the rectangle as the path in aThebesContext
|
|
gfxRect r(0, 0,
|
|
nsPresContext::AppUnitsToFloatCSSPixels(aRect.width),
|
|
nsPresContext::AppUnitsToFloatCSSPixels(aRect.height));
|
|
aThebesContext->NewPath();
|
|
#ifdef MOZ_GFX_OPTIMIZE_MOBILE
|
|
aThebesContext->Rectangle(r, true);
|
|
#else
|
|
aThebesContext->Rectangle(r);
|
|
#endif
|
|
|
|
nsIFrame* rootFrame = mFrameConstructor->GetRootFrame();
|
|
if (!rootFrame) {
|
|
// Nothing to paint, just fill the rect
|
|
aThebesContext->SetColor(gfxRGBA(aBackgroundColor));
|
|
aThebesContext->Fill();
|
|
return NS_OK;
|
|
}
|
|
|
|
gfxContextAutoSaveRestore save(aThebesContext);
|
|
|
|
gfxContext::GraphicsOperator oldOperator = aThebesContext->CurrentOperator();
|
|
if (oldOperator == gfxContext::OPERATOR_OVER) {
|
|
// Clip to the destination rectangle before we push the group,
|
|
// to limit the size of the temporary surface
|
|
aThebesContext->Clip();
|
|
}
|
|
|
|
// we want the window to be composited as a single image using
|
|
// whatever operator was set; set OPERATOR_OVER here, which is
|
|
// either already the case, or overrides the operator in a group.
|
|
// the original operator will be present when we PopGroup.
|
|
// we can avoid using a temporary surface if we're using OPERATOR_OVER
|
|
// and our background color has no alpha (so we'll be compositing on top
|
|
// of a fully opaque solid color region)
|
|
bool needsGroup = NS_GET_A(aBackgroundColor) < 0xff ||
|
|
oldOperator != gfxContext::OPERATOR_OVER;
|
|
|
|
if (needsGroup) {
|
|
aThebesContext->PushGroup(NS_GET_A(aBackgroundColor) == 0xff ?
|
|
gfxASurface::CONTENT_COLOR :
|
|
gfxASurface::CONTENT_COLOR_ALPHA);
|
|
aThebesContext->Save();
|
|
|
|
if (oldOperator != gfxContext::OPERATOR_OVER) {
|
|
// Clip now while we paint to the temporary surface. For
|
|
// non-source-bounded operators (e.g., SOURCE), we need to do clip
|
|
// here after we've pushed the group, so that eventually popping
|
|
// the group and painting it will be able to clear the entire
|
|
// destination surface.
|
|
aThebesContext->Clip();
|
|
aThebesContext->SetOperator(gfxContext::OPERATOR_OVER);
|
|
}
|
|
}
|
|
|
|
aThebesContext->Translate(gfxPoint(-nsPresContext::AppUnitsToFloatCSSPixels(aRect.x),
|
|
-nsPresContext::AppUnitsToFloatCSSPixels(aRect.y)));
|
|
|
|
nsDeviceContext* devCtx = mPresContext->DeviceContext();
|
|
gfxFloat scale = gfxFloat(devCtx->AppUnitsPerDevPixel())/nsPresContext::AppUnitsPerCSSPixel();
|
|
aThebesContext->Scale(scale, scale);
|
|
|
|
// Since canvas APIs use floats to set up their matrices, we may have
|
|
// some slight inaccuracy here. Adjust matrix components that are
|
|
// integers up to the accuracy of floats to be those integers.
|
|
aThebesContext->NudgeCurrentMatrixToIntegers();
|
|
|
|
AutoSaveRestoreRenderingState _(this);
|
|
|
|
nsRefPtr<nsRenderingContext> rc = new nsRenderingContext();
|
|
rc->Init(devCtx, aThebesContext);
|
|
|
|
bool wouldFlushRetainedLayers = false;
|
|
uint32_t flags = nsLayoutUtils::PAINT_IGNORE_SUPPRESSION;
|
|
if (aThebesContext->CurrentMatrix().HasNonIntegerTranslation()) {
|
|
flags |= nsLayoutUtils::PAINT_IN_TRANSFORM;
|
|
}
|
|
if (!(aFlags & RENDER_ASYNC_DECODE_IMAGES)) {
|
|
flags |= nsLayoutUtils::PAINT_SYNC_DECODE_IMAGES;
|
|
}
|
|
if (aFlags & RENDER_USE_WIDGET_LAYERS) {
|
|
// We only support using widget layers on display root's with widgets.
|
|
nsView* view = rootFrame->GetView();
|
|
if (view && view->GetWidget() &&
|
|
nsLayoutUtils::GetDisplayRootFrame(rootFrame) == rootFrame) {
|
|
flags |= nsLayoutUtils::PAINT_WIDGET_LAYERS;
|
|
}
|
|
}
|
|
if (!(aFlags & RENDER_CARET)) {
|
|
wouldFlushRetainedLayers = true;
|
|
flags |= nsLayoutUtils::PAINT_HIDE_CARET;
|
|
}
|
|
if (aFlags & RENDER_IGNORE_VIEWPORT_SCROLLING) {
|
|
wouldFlushRetainedLayers = !IgnoringViewportScrolling();
|
|
mRenderFlags = ChangeFlag(mRenderFlags, true, STATE_IGNORING_VIEWPORT_SCROLLING);
|
|
}
|
|
if (aFlags & RENDER_DRAWWINDOW_NOT_FLUSHING) {
|
|
mRenderFlags = ChangeFlag(mRenderFlags, true, STATE_DRAWWINDOW_NOT_FLUSHING);
|
|
}
|
|
if (aFlags & RENDER_DOCUMENT_RELATIVE) {
|
|
// XXX be smarter about this ... drawWindow might want a rect
|
|
// that's "pretty close" to what our retained layer tree covers.
|
|
// In that case, it wouldn't disturb normal rendering too much,
|
|
// and we should allow it.
|
|
wouldFlushRetainedLayers = true;
|
|
flags |= nsLayoutUtils::PAINT_DOCUMENT_RELATIVE;
|
|
}
|
|
|
|
// Don't let drawWindow blow away our retained layer tree
|
|
if ((flags & nsLayoutUtils::PAINT_WIDGET_LAYERS) && wouldFlushRetainedLayers) {
|
|
flags &= ~nsLayoutUtils::PAINT_WIDGET_LAYERS;
|
|
}
|
|
|
|
nsLayoutUtils::PaintFrame(rc, rootFrame, nsRegion(aRect),
|
|
aBackgroundColor, flags);
|
|
|
|
// if we had to use a group, paint it to the destination now
|
|
if (needsGroup) {
|
|
aThebesContext->Restore();
|
|
aThebesContext->PopGroupToSource();
|
|
aThebesContext->Paint();
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
/*
|
|
* Clip the display list aList to a range. Returns the clipped
|
|
* rectangle surrounding the range.
|
|
*/
|
|
nsRect
|
|
PresShell::ClipListToRange(nsDisplayListBuilder *aBuilder,
|
|
nsDisplayList* aList,
|
|
nsRange* aRange)
|
|
{
|
|
// iterate though the display items and add up the bounding boxes of each.
|
|
// This will allow the total area of the frames within the range to be
|
|
// determined. To do this, remove an item from the bottom of the list, check
|
|
// whether it should be part of the range, and if so, append it to the top
|
|
// of the temporary list tmpList. If the item is a text frame at the end of
|
|
// the selection range, clip it to the portion of the text frame that is
|
|
// part of the selection. Then, append the wrapper to the top of the list.
|
|
// Otherwise, just delete the item and don't append it.
|
|
nsRect surfaceRect;
|
|
nsDisplayList tmpList;
|
|
|
|
nsDisplayItem* i;
|
|
while ((i = aList->RemoveBottom())) {
|
|
// itemToInsert indiciates the item that should be inserted into the
|
|
// temporary list. If null, no item should be inserted.
|
|
nsDisplayItem* itemToInsert = nullptr;
|
|
nsIFrame* frame = i->Frame();
|
|
nsIContent* content = frame->GetContent();
|
|
if (content) {
|
|
bool atStart = (content == aRange->GetStartParent());
|
|
bool atEnd = (content == aRange->GetEndParent());
|
|
if ((atStart || atEnd) && frame->GetType() == nsGkAtoms::textFrame) {
|
|
int32_t frameStartOffset, frameEndOffset;
|
|
frame->GetOffsets(frameStartOffset, frameEndOffset);
|
|
|
|
int32_t hilightStart =
|
|
atStart ? std::max(aRange->StartOffset(), frameStartOffset) : frameStartOffset;
|
|
int32_t hilightEnd =
|
|
atEnd ? std::min(aRange->EndOffset(), frameEndOffset) : frameEndOffset;
|
|
if (hilightStart < hilightEnd) {
|
|
// determine the location of the start and end edges of the range.
|
|
nsPoint startPoint, endPoint;
|
|
frame->GetPointFromOffset(hilightStart, &startPoint);
|
|
frame->GetPointFromOffset(hilightEnd, &endPoint);
|
|
|
|
// the clip rectangle is determined by taking the the start and
|
|
// end points of the range, offset from the reference frame.
|
|
// Because of rtl, the end point may be to the left of the
|
|
// start point, so x is set to the lowest value
|
|
nsRect textRect(aBuilder->ToReferenceFrame(frame), frame->GetSize());
|
|
nscoord x = std::min(startPoint.x, endPoint.x);
|
|
textRect.x += x;
|
|
textRect.width = std::max(startPoint.x, endPoint.x) - x;
|
|
surfaceRect.UnionRect(surfaceRect, textRect);
|
|
|
|
DisplayItemClip newClip;
|
|
newClip.SetTo(textRect);
|
|
newClip.IntersectWith(i->GetClip());
|
|
i->SetClip(aBuilder, newClip);
|
|
itemToInsert = i;
|
|
}
|
|
}
|
|
// Don't try to descend into subdocuments.
|
|
// If this ever changes we'd need to add handling for subdocuments with
|
|
// different zoom levels.
|
|
else if (content->GetCurrentDoc() ==
|
|
aRange->GetStartParent()->GetCurrentDoc()) {
|
|
// if the node is within the range, append it to the temporary list
|
|
bool before, after;
|
|
nsresult rv =
|
|
nsRange::CompareNodeToRange(content, aRange, &before, &after);
|
|
if (NS_SUCCEEDED(rv) && !before && !after) {
|
|
itemToInsert = i;
|
|
bool snap;
|
|
surfaceRect.UnionRect(surfaceRect, i->GetBounds(aBuilder, &snap));
|
|
}
|
|
}
|
|
}
|
|
|
|
// insert the item into the list if necessary. If the item has a child
|
|
// list, insert that as well
|
|
nsDisplayList* sublist = i->GetSameCoordinateSystemChildren();
|
|
if (itemToInsert || sublist) {
|
|
tmpList.AppendToTop(itemToInsert ? itemToInsert : i);
|
|
// if the item is a list, iterate over it as well
|
|
if (sublist)
|
|
surfaceRect.UnionRect(surfaceRect,
|
|
ClipListToRange(aBuilder, sublist, aRange));
|
|
}
|
|
else {
|
|
// otherwise, just delete the item and don't readd it to the list
|
|
i->~nsDisplayItem();
|
|
}
|
|
}
|
|
|
|
// now add all the items back onto the original list again
|
|
aList->AppendToTop(&tmpList);
|
|
|
|
return surfaceRect;
|
|
}
|
|
|
|
#ifdef DEBUG
|
|
#include <stdio.h>
|
|
|
|
static bool gDumpRangePaintList = false;
|
|
#endif
|
|
|
|
RangePaintInfo*
|
|
PresShell::CreateRangePaintInfo(nsIDOMRange* aRange,
|
|
nsRect& aSurfaceRect,
|
|
bool aForPrimarySelection)
|
|
{
|
|
RangePaintInfo* info = nullptr;
|
|
|
|
nsRange* range = static_cast<nsRange*>(aRange);
|
|
|
|
nsIFrame* ancestorFrame;
|
|
nsIFrame* rootFrame = GetRootFrame();
|
|
|
|
// If the start or end of the range is the document, just use the root
|
|
// frame, otherwise get the common ancestor of the two endpoints of the
|
|
// range.
|
|
nsINode* startParent = range->GetStartParent();
|
|
nsINode* endParent = range->GetEndParent();
|
|
nsIDocument* doc = startParent->GetCurrentDoc();
|
|
if (startParent == doc || endParent == doc) {
|
|
ancestorFrame = rootFrame;
|
|
}
|
|
else {
|
|
nsINode* ancestor = nsContentUtils::GetCommonAncestor(startParent, endParent);
|
|
NS_ASSERTION(!ancestor || ancestor->IsNodeOfType(nsINode::eCONTENT),
|
|
"common ancestor is not content");
|
|
if (!ancestor || !ancestor->IsNodeOfType(nsINode::eCONTENT))
|
|
return nullptr;
|
|
|
|
nsIContent* ancestorContent = static_cast<nsIContent*>(ancestor);
|
|
ancestorFrame = ancestorContent->GetPrimaryFrame();
|
|
|
|
// use the nearest ancestor frame that includes all continuations as the
|
|
// root for building the display list
|
|
while (ancestorFrame &&
|
|
nsLayoutUtils::GetNextContinuationOrSpecialSibling(ancestorFrame))
|
|
ancestorFrame = ancestorFrame->GetParent();
|
|
}
|
|
|
|
if (!ancestorFrame)
|
|
return nullptr;
|
|
|
|
info = new RangePaintInfo(range, ancestorFrame);
|
|
|
|
nsRect ancestorRect = ancestorFrame->GetVisualOverflowRect();
|
|
|
|
// get a display list containing the range
|
|
info->mBuilder.SetIncludeAllOutOfFlows();
|
|
if (aForPrimarySelection) {
|
|
info->mBuilder.SetSelectedFramesOnly();
|
|
}
|
|
info->mBuilder.EnterPresShell(ancestorFrame, ancestorRect);
|
|
ancestorFrame->BuildDisplayListForStackingContext(&info->mBuilder,
|
|
ancestorRect, &info->mList);
|
|
|
|
#ifdef DEBUG
|
|
if (gDumpRangePaintList) {
|
|
fprintf(stderr, "CreateRangePaintInfo --- before ClipListToRange:\n");
|
|
nsFrame::PrintDisplayList(&(info->mBuilder), info->mList);
|
|
}
|
|
#endif
|
|
|
|
nsRect rangeRect = ClipListToRange(&info->mBuilder, &info->mList, range);
|
|
|
|
info->mBuilder.LeavePresShell(ancestorFrame, ancestorRect);
|
|
|
|
#ifdef DEBUG
|
|
if (gDumpRangePaintList) {
|
|
fprintf(stderr, "CreateRangePaintInfo --- after ClipListToRange:\n");
|
|
nsFrame::PrintDisplayList(&(info->mBuilder), info->mList);
|
|
}
|
|
#endif
|
|
|
|
// determine the offset of the reference frame for the display list
|
|
// to the root frame. This will allow the coordinates used when painting
|
|
// to all be offset from the same point
|
|
info->mRootOffset = ancestorFrame->GetOffsetTo(rootFrame);
|
|
rangeRect.MoveBy(info->mRootOffset);
|
|
aSurfaceRect.UnionRect(aSurfaceRect, rangeRect);
|
|
|
|
return info;
|
|
}
|
|
|
|
already_AddRefed<gfxASurface>
|
|
PresShell::PaintRangePaintInfo(nsTArray<nsAutoPtr<RangePaintInfo> >* aItems,
|
|
nsISelection* aSelection,
|
|
nsIntRegion* aRegion,
|
|
nsRect aArea,
|
|
nsIntPoint& aPoint,
|
|
nsIntRect* aScreenRect)
|
|
{
|
|
nsPresContext* pc = GetPresContext();
|
|
if (!pc || aArea.width == 0 || aArea.height == 0)
|
|
return nullptr;
|
|
|
|
nsDeviceContext* deviceContext = pc->DeviceContext();
|
|
|
|
// use the rectangle to create the surface
|
|
nsIntRect pixelArea = aArea.ToOutsidePixels(pc->AppUnitsPerDevPixel());
|
|
|
|
// if the area of the image is larger than the maximum area, scale it down
|
|
float scale = 0.0;
|
|
nsIntRect rootScreenRect =
|
|
GetRootFrame()->GetScreenRectInAppUnits().ToNearestPixels(
|
|
pc->AppUnitsPerDevPixel());
|
|
|
|
// if the image is larger in one or both directions than half the size of
|
|
// the available screen area, scale the image down to that size.
|
|
nsRect maxSize;
|
|
deviceContext->GetClientRect(maxSize);
|
|
nscoord maxWidth = pc->AppUnitsToDevPixels(maxSize.width >> 1);
|
|
nscoord maxHeight = pc->AppUnitsToDevPixels(maxSize.height >> 1);
|
|
bool resize = (pixelArea.width > maxWidth || pixelArea.height > maxHeight);
|
|
if (resize) {
|
|
scale = 1.0;
|
|
// divide the maximum size by the image size in both directions. Whichever
|
|
// direction produces the smallest result determines how much should be
|
|
// scaled.
|
|
if (pixelArea.width > maxWidth)
|
|
scale = std::min(scale, float(maxWidth) / pixelArea.width);
|
|
if (pixelArea.height > maxHeight)
|
|
scale = std::min(scale, float(maxHeight) / pixelArea.height);
|
|
|
|
pixelArea.width = NSToIntFloor(float(pixelArea.width) * scale);
|
|
pixelArea.height = NSToIntFloor(float(pixelArea.height) * scale);
|
|
|
|
// adjust the screen position based on the rescaled size
|
|
nscoord left = rootScreenRect.x + pixelArea.x;
|
|
nscoord top = rootScreenRect.y + pixelArea.y;
|
|
aScreenRect->x = NSToIntFloor(aPoint.x - float(aPoint.x - left) * scale);
|
|
aScreenRect->y = NSToIntFloor(aPoint.y - float(aPoint.y - top) * scale);
|
|
}
|
|
else {
|
|
// move aScreenRect to the position of the surface in screen coordinates
|
|
aScreenRect->MoveTo(rootScreenRect.x + pixelArea.x, rootScreenRect.y + pixelArea.y);
|
|
}
|
|
aScreenRect->width = pixelArea.width;
|
|
aScreenRect->height = pixelArea.height;
|
|
|
|
nsRefPtr<gfxImageSurface> surface =
|
|
new gfxImageSurface(gfxIntSize(pixelArea.width, pixelArea.height),
|
|
gfxImageSurface::ImageFormatARGB32);
|
|
if (surface->CairoStatus()) {
|
|
return nullptr;
|
|
}
|
|
|
|
// clear the image
|
|
gfxContext context(surface);
|
|
context.SetOperator(gfxContext::OPERATOR_CLEAR);
|
|
context.Rectangle(gfxRect(0, 0, pixelArea.width, pixelArea.height));
|
|
context.Fill();
|
|
|
|
nsRefPtr<nsRenderingContext> rc = new nsRenderingContext();
|
|
rc->Init(deviceContext, surface);
|
|
|
|
if (aRegion) {
|
|
// Convert aRegion from CSS pixels to dev pixels
|
|
nsIntRegion region =
|
|
aRegion->ToAppUnits(nsPresContext::AppUnitsPerCSSPixel())
|
|
.ToOutsidePixels(pc->AppUnitsPerDevPixel());
|
|
rc->SetClip(region);
|
|
}
|
|
|
|
if (resize)
|
|
rc->Scale(scale, scale);
|
|
|
|
// translate so that points are relative to the surface area
|
|
rc->Translate(-aArea.TopLeft());
|
|
|
|
// temporarily hide the selection so that text is drawn normally. If a
|
|
// selection is being rendered, use that, otherwise use the presshell's
|
|
// selection.
|
|
nsRefPtr<nsFrameSelection> frameSelection;
|
|
if (aSelection) {
|
|
frameSelection = static_cast<Selection*>(aSelection)->GetFrameSelection();
|
|
}
|
|
else {
|
|
frameSelection = FrameSelection();
|
|
}
|
|
int16_t oldDisplaySelection = frameSelection->GetDisplaySelection();
|
|
frameSelection->SetDisplaySelection(nsISelectionController::SELECTION_HIDDEN);
|
|
|
|
// next, paint each range in the selection
|
|
int32_t count = aItems->Length();
|
|
for (int32_t i = 0; i < count; i++) {
|
|
RangePaintInfo* rangeInfo = (*aItems)[i];
|
|
// the display lists paint relative to the offset from the reference
|
|
// frame, so translate the rendering context
|
|
nsRenderingContext::AutoPushTranslation
|
|
translate(rc, rangeInfo->mRootOffset);
|
|
|
|
aArea.MoveBy(-rangeInfo->mRootOffset.x, -rangeInfo->mRootOffset.y);
|
|
nsRegion visible(aArea);
|
|
rangeInfo->mList.ComputeVisibilityForRoot(&rangeInfo->mBuilder, &visible);
|
|
rangeInfo->mList.PaintRoot(&rangeInfo->mBuilder, rc, nsDisplayList::PAINT_DEFAULT);
|
|
aArea.MoveBy(rangeInfo->mRootOffset.x, rangeInfo->mRootOffset.y);
|
|
}
|
|
|
|
// restore the old selection display state
|
|
frameSelection->SetDisplaySelection(oldDisplaySelection);
|
|
|
|
return surface.forget();
|
|
}
|
|
|
|
already_AddRefed<gfxASurface>
|
|
PresShell::RenderNode(nsIDOMNode* aNode,
|
|
nsIntRegion* aRegion,
|
|
nsIntPoint& aPoint,
|
|
nsIntRect* aScreenRect)
|
|
{
|
|
// area will hold the size of the surface needed to draw the node, measured
|
|
// from the root frame.
|
|
nsRect area;
|
|
nsTArray<nsAutoPtr<RangePaintInfo> > rangeItems;
|
|
|
|
// nothing to draw if the node isn't in a document
|
|
nsCOMPtr<nsINode> node = do_QueryInterface(aNode);
|
|
if (!node->IsInDoc())
|
|
return nullptr;
|
|
|
|
nsRefPtr<nsRange> range = new nsRange(node);
|
|
if (NS_FAILED(range->SelectNode(aNode)))
|
|
return nullptr;
|
|
|
|
RangePaintInfo* info = CreateRangePaintInfo(range, area, false);
|
|
if (info && !rangeItems.AppendElement(info)) {
|
|
delete info;
|
|
return nullptr;
|
|
}
|
|
|
|
if (aRegion) {
|
|
// combine the area with the supplied region
|
|
nsIntRect rrectPixels = aRegion->GetBounds();
|
|
|
|
nsRect rrect = rrectPixels.ToAppUnits(nsPresContext::AppUnitsPerCSSPixel());
|
|
area.IntersectRect(area, rrect);
|
|
|
|
nsPresContext* pc = GetPresContext();
|
|
if (!pc)
|
|
return nullptr;
|
|
|
|
// move the region so that it is offset from the topleft corner of the surface
|
|
aRegion->MoveBy(-pc->AppUnitsToDevPixels(area.x),
|
|
-pc->AppUnitsToDevPixels(area.y));
|
|
}
|
|
|
|
return PaintRangePaintInfo(&rangeItems, nullptr, aRegion, area, aPoint,
|
|
aScreenRect);
|
|
}
|
|
|
|
already_AddRefed<gfxASurface>
|
|
PresShell::RenderSelection(nsISelection* aSelection,
|
|
nsIntPoint& aPoint,
|
|
nsIntRect* aScreenRect)
|
|
{
|
|
// area will hold the size of the surface needed to draw the selection,
|
|
// measured from the root frame.
|
|
nsRect area;
|
|
nsTArray<nsAutoPtr<RangePaintInfo> > rangeItems;
|
|
|
|
// iterate over each range and collect them into the rangeItems array.
|
|
// This is done so that the size of selection can be determined so as
|
|
// to allocate a surface area
|
|
int32_t numRanges;
|
|
aSelection->GetRangeCount(&numRanges);
|
|
NS_ASSERTION(numRanges > 0, "RenderSelection called with no selection");
|
|
|
|
for (int32_t r = 0; r < numRanges; r++)
|
|
{
|
|
nsCOMPtr<nsIDOMRange> range;
|
|
aSelection->GetRangeAt(r, getter_AddRefs(range));
|
|
|
|
RangePaintInfo* info = CreateRangePaintInfo(range, area, true);
|
|
if (info && !rangeItems.AppendElement(info)) {
|
|
delete info;
|
|
return nullptr;
|
|
}
|
|
}
|
|
|
|
return PaintRangePaintInfo(&rangeItems, aSelection, nullptr, area, aPoint,
|
|
aScreenRect);
|
|
}
|
|
|
|
void
|
|
PresShell::AddPrintPreviewBackgroundItem(nsDisplayListBuilder& aBuilder,
|
|
nsDisplayList& aList,
|
|
nsIFrame* aFrame,
|
|
const nsRect& aBounds)
|
|
{
|
|
aList.AppendNewToBottom(new (&aBuilder)
|
|
nsDisplaySolidColor(&aBuilder, aFrame, aBounds, NS_RGB(115, 115, 115)));
|
|
}
|
|
|
|
static bool
|
|
AddCanvasBackgroundColor(const nsDisplayList& aList, nsIFrame* aCanvasFrame,
|
|
nscolor aColor)
|
|
{
|
|
for (nsDisplayItem* i = aList.GetBottom(); i; i = i->GetAbove()) {
|
|
if (i->Frame() == aCanvasFrame &&
|
|
i->GetType() == nsDisplayItem::TYPE_CANVAS_BACKGROUND_COLOR) {
|
|
nsDisplayCanvasBackgroundColor* bg = static_cast<nsDisplayCanvasBackgroundColor*>(i);
|
|
bg->SetExtraBackgroundColor(aColor);
|
|
return true;
|
|
}
|
|
nsDisplayList* sublist = i->GetSameCoordinateSystemChildren();
|
|
if (sublist && AddCanvasBackgroundColor(*sublist, aCanvasFrame, aColor))
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
void
|
|
PresShell::AddCanvasBackgroundColorItem(nsDisplayListBuilder& aBuilder,
|
|
nsDisplayList& aList,
|
|
nsIFrame* aFrame,
|
|
const nsRect& aBounds,
|
|
nscolor aBackstopColor,
|
|
uint32_t aFlags)
|
|
{
|
|
if (aBounds.IsEmpty()) {
|
|
return;
|
|
}
|
|
// We don't want to add an item for the canvas background color if the frame
|
|
// (sub)tree we are painting doesn't include any canvas frames. There isn't
|
|
// an easy way to check this directly, but if we check if the root of the
|
|
// (sub)tree we are painting is a canvas frame that should cover us in all
|
|
// cases (it will usually be a viewport frame when we have a canvas frame in
|
|
// the (sub)tree).
|
|
if (!(aFlags & nsIPresShell::FORCE_DRAW) &&
|
|
!nsCSSRendering::IsCanvasFrame(aFrame)) {
|
|
return;
|
|
}
|
|
|
|
nscolor bgcolor = NS_ComposeColors(aBackstopColor, mCanvasBackgroundColor);
|
|
if (NS_GET_A(bgcolor) == 0)
|
|
return;
|
|
|
|
// To make layers work better, we want to avoid having a big non-scrolled
|
|
// color background behind a scrolled transparent background. Instead,
|
|
// we'll try to move the color background into the scrolled content
|
|
// by making nsDisplayCanvasBackground paint it.
|
|
if (!aFrame->GetParent()) {
|
|
nsIScrollableFrame* sf =
|
|
aFrame->PresContext()->PresShell()->GetRootScrollFrameAsScrollable();
|
|
if (sf) {
|
|
nsCanvasFrame* canvasFrame = do_QueryFrame(sf->GetScrolledFrame());
|
|
if (canvasFrame && canvasFrame->IsVisibleForPainting(&aBuilder)) {
|
|
if (AddCanvasBackgroundColor(aList, canvasFrame, bgcolor))
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
|
|
aList.AppendNewToBottom(
|
|
new (&aBuilder) nsDisplaySolidColor(&aBuilder, aFrame, aBounds, bgcolor));
|
|
}
|
|
|
|
static bool IsTransparentContainerElement(nsPresContext* aPresContext)
|
|
{
|
|
nsCOMPtr<nsISupports> container = aPresContext->GetContainerInternal();
|
|
nsCOMPtr<nsIDocShellTreeItem> docShellItem = do_QueryInterface(container);
|
|
nsCOMPtr<nsPIDOMWindow> pwin(do_GetInterface(docShellItem));
|
|
if (!pwin)
|
|
return false;
|
|
nsCOMPtr<nsIContent> containerElement =
|
|
do_QueryInterface(pwin->GetFrameElementInternal());
|
|
return containerElement &&
|
|
containerElement->HasAttr(kNameSpaceID_None, nsGkAtoms::transparent);
|
|
}
|
|
|
|
nscolor PresShell::GetDefaultBackgroundColorToDraw()
|
|
{
|
|
if (!mPresContext || !mPresContext->GetBackgroundColorDraw()) {
|
|
return NS_RGB(255,255,255);
|
|
}
|
|
return mPresContext->DefaultBackgroundColor();
|
|
}
|
|
|
|
void PresShell::UpdateCanvasBackground()
|
|
{
|
|
// If we have a frame tree and it has style information that
|
|
// specifies the background color of the canvas, update our local
|
|
// cache of that color.
|
|
nsIFrame* rootStyleFrame = FrameConstructor()->GetRootElementStyleFrame();
|
|
if (rootStyleFrame) {
|
|
nsStyleContext* bgStyle =
|
|
nsCSSRendering::FindRootFrameBackground(rootStyleFrame);
|
|
// XXX We should really be passing the canvasframe, not the root element
|
|
// style frame but we don't have access to the canvasframe here. It isn't
|
|
// a problem because only a few frames can return something other than true
|
|
// and none of them would be a canvas frame or root element style frame.
|
|
bool drawBackgroundImage;
|
|
bool drawBackgroundColor;
|
|
|
|
mCanvasBackgroundColor =
|
|
nsCSSRendering::DetermineBackgroundColor(mPresContext, bgStyle,
|
|
rootStyleFrame,
|
|
drawBackgroundImage,
|
|
drawBackgroundColor);
|
|
if (GetPresContext()->IsCrossProcessRootContentDocument() &&
|
|
!IsTransparentContainerElement(mPresContext)) {
|
|
mCanvasBackgroundColor =
|
|
NS_ComposeColors(GetDefaultBackgroundColorToDraw(), mCanvasBackgroundColor);
|
|
}
|
|
}
|
|
|
|
// If the root element of the document (ie html) has style 'display: none'
|
|
// then the document's background color does not get drawn; cache the
|
|
// color we actually draw.
|
|
if (!FrameConstructor()->GetRootElementFrame()) {
|
|
mCanvasBackgroundColor = GetDefaultBackgroundColorToDraw();
|
|
}
|
|
if (XRE_GetProcessType() == GeckoProcessType_Content) {
|
|
if (TabChild* tabChild = GetTabChildFrom(this)) {
|
|
tabChild->SetBackgroundColor(mCanvasBackgroundColor);
|
|
}
|
|
}
|
|
}
|
|
|
|
nscolor PresShell::ComputeBackstopColor(nsView* aDisplayRoot)
|
|
{
|
|
nsIWidget* widget = aDisplayRoot->GetWidget();
|
|
if (widget && (widget->GetTransparencyMode() != eTransparencyOpaque ||
|
|
widget->WidgetPaintsBackground())) {
|
|
// Within a transparent widget, so the backstop color must be
|
|
// totally transparent.
|
|
return NS_RGBA(0,0,0,0);
|
|
}
|
|
// Within an opaque widget (or no widget at all), so the backstop
|
|
// color must be totally opaque. The user's default background
|
|
// as reported by the prescontext is guaranteed to be opaque.
|
|
return GetDefaultBackgroundColorToDraw();
|
|
}
|
|
|
|
struct PaintParams {
|
|
nscolor mBackgroundColor;
|
|
};
|
|
|
|
LayerManager* PresShell::GetLayerManager()
|
|
{
|
|
NS_ASSERTION(mViewManager, "Should have view manager");
|
|
|
|
nsView* rootView = mViewManager->GetRootView();
|
|
if (rootView) {
|
|
if (nsIWidget* widget = rootView->GetWidget()) {
|
|
return widget->GetLayerManager();
|
|
}
|
|
}
|
|
return nullptr;
|
|
}
|
|
|
|
void PresShell::SetIgnoreViewportScrolling(bool aIgnore)
|
|
{
|
|
if (IgnoringViewportScrolling() == aIgnore) {
|
|
return;
|
|
}
|
|
RenderingState state(this);
|
|
state.mRenderFlags = ChangeFlag(state.mRenderFlags, aIgnore,
|
|
STATE_IGNORING_VIEWPORT_SCROLLING);
|
|
SetRenderingState(state);
|
|
}
|
|
|
|
void PresShell::SetDisplayPort(const nsRect& aDisplayPort)
|
|
{
|
|
NS_ABORT_IF_FALSE(false, "SetDisplayPort is deprecated");
|
|
}
|
|
|
|
nsresult PresShell::SetResolution(float aXResolution, float aYResolution)
|
|
{
|
|
if (!(aXResolution > 0.0 && aYResolution > 0.0)) {
|
|
return NS_ERROR_ILLEGAL_VALUE;
|
|
}
|
|
if (aXResolution == mXResolution && aYResolution == mYResolution) {
|
|
return NS_OK;
|
|
}
|
|
RenderingState state(this);
|
|
state.mXResolution = aXResolution;
|
|
state.mYResolution = aYResolution;
|
|
SetRenderingState(state);
|
|
return NS_OK;
|
|
}
|
|
|
|
void PresShell::SetRenderingState(const RenderingState& aState)
|
|
{
|
|
if (mRenderFlags != aState.mRenderFlags) {
|
|
// Rendering state changed in a way that forces us to flush any
|
|
// retained layers we might already have.
|
|
LayerManager* manager = GetLayerManager();
|
|
if (manager) {
|
|
FrameLayerBuilder::InvalidateAllLayers(manager);
|
|
}
|
|
}
|
|
|
|
mRenderFlags = aState.mRenderFlags;
|
|
mXResolution = aState.mXResolution;
|
|
mYResolution = aState.mYResolution;
|
|
}
|
|
|
|
void PresShell::SynthesizeMouseMove(bool aFromScroll)
|
|
{
|
|
if (!sSynthMouseMove)
|
|
return;
|
|
|
|
if (mPaintingSuppressed || !mIsActive || !mPresContext) {
|
|
return;
|
|
}
|
|
|
|
if (!mPresContext->IsRoot()) {
|
|
nsIPresShell* rootPresShell = GetRootPresShell();
|
|
if (rootPresShell) {
|
|
rootPresShell->SynthesizeMouseMove(aFromScroll);
|
|
}
|
|
return;
|
|
}
|
|
|
|
if (mMouseLocation == nsPoint(NS_UNCONSTRAINEDSIZE, NS_UNCONSTRAINEDSIZE))
|
|
return;
|
|
|
|
if (!mSynthMouseMoveEvent.IsPending()) {
|
|
nsRefPtr<nsSynthMouseMoveEvent> ev =
|
|
new nsSynthMouseMoveEvent(this, aFromScroll);
|
|
|
|
if (!GetPresContext()->RefreshDriver()->AddRefreshObserver(ev,
|
|
Flush_Display)) {
|
|
NS_WARNING("failed to dispatch nsSynthMouseMoveEvent");
|
|
return;
|
|
}
|
|
|
|
mSynthMouseMoveEvent = ev;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Find the first floating view with a widget in a postorder traversal of the
|
|
* view tree that contains the point. Thus more deeply nested floating views
|
|
* are preferred over their ancestors, and floating views earlier in the
|
|
* view hierarchy (i.e., added later) are preferred over their siblings.
|
|
* This is adequate for finding the "topmost" floating view under a point,
|
|
* given that floating views don't supporting having a specific z-index.
|
|
*
|
|
* We cannot exit early when aPt is outside the view bounds, because floating
|
|
* views aren't necessarily included in their parent's bounds, so this could
|
|
* traverse the entire view hierarchy --- use carefully.
|
|
*/
|
|
static nsView* FindFloatingViewContaining(nsView* aView, nsPoint aPt)
|
|
{
|
|
if (aView->GetVisibility() == nsViewVisibility_kHide)
|
|
// No need to look into descendants.
|
|
return nullptr;
|
|
|
|
nsIFrame* frame = aView->GetFrame();
|
|
if (frame) {
|
|
if (!frame->IsVisibleConsideringAncestors(nsIFrame::VISIBILITY_CROSS_CHROME_CONTENT_BOUNDARY) ||
|
|
!frame->PresContext()->PresShell()->IsActive()) {
|
|
return nullptr;
|
|
}
|
|
}
|
|
|
|
for (nsView* v = aView->GetFirstChild(); v; v = v->GetNextSibling()) {
|
|
nsView* r = FindFloatingViewContaining(v, v->ConvertFromParentCoords(aPt));
|
|
if (r)
|
|
return r;
|
|
}
|
|
|
|
if (aView->GetFloating() && aView->HasWidget() &&
|
|
aView->GetDimensions().Contains(aPt))
|
|
return aView;
|
|
|
|
return nullptr;
|
|
}
|
|
|
|
/*
|
|
* This finds the first view containing the given point in a postorder
|
|
* traversal of the view tree that contains the point, assuming that the
|
|
* point is not in a floating view. It assumes that only floating views
|
|
* extend outside the bounds of their parents.
|
|
*
|
|
* This methods should only be called if FindFloatingViewContaining
|
|
* returns null.
|
|
*/
|
|
static nsView* FindViewContaining(nsView* aView, nsPoint aPt)
|
|
{
|
|
if (!aView->GetDimensions().Contains(aPt) ||
|
|
aView->GetVisibility() == nsViewVisibility_kHide) {
|
|
return nullptr;
|
|
}
|
|
|
|
nsIFrame* frame = aView->GetFrame();
|
|
if (frame) {
|
|
if (!frame->IsVisibleConsideringAncestors(nsIFrame::VISIBILITY_CROSS_CHROME_CONTENT_BOUNDARY) ||
|
|
!frame->PresContext()->PresShell()->IsActive()) {
|
|
return nullptr;
|
|
}
|
|
}
|
|
|
|
for (nsView* v = aView->GetFirstChild(); v; v = v->GetNextSibling()) {
|
|
nsView* r = FindViewContaining(v, v->ConvertFromParentCoords(aPt));
|
|
if (r)
|
|
return r;
|
|
}
|
|
|
|
return aView;
|
|
}
|
|
|
|
void
|
|
PresShell::ProcessSynthMouseMoveEvent(bool aFromScroll)
|
|
{
|
|
// If drag session has started, we shouldn't synthesize mousemove event.
|
|
nsCOMPtr<nsIDragSession> dragSession = nsContentUtils::GetDragSession();
|
|
if (dragSession) {
|
|
mSynthMouseMoveEvent.Forget();
|
|
return;
|
|
}
|
|
|
|
// allow new event to be posted while handling this one only if the
|
|
// source of the event is a scroll (to prevent infinite reflow loops)
|
|
if (aFromScroll) {
|
|
mSynthMouseMoveEvent.Forget();
|
|
}
|
|
|
|
nsView* rootView = mViewManager ? mViewManager->GetRootView() : nullptr;
|
|
if (mMouseLocation == nsPoint(NS_UNCONSTRAINEDSIZE, NS_UNCONSTRAINEDSIZE) ||
|
|
!rootView || !rootView->HasWidget() || !mPresContext) {
|
|
mSynthMouseMoveEvent.Forget();
|
|
return;
|
|
}
|
|
|
|
NS_ASSERTION(mPresContext->IsRoot(), "Only a root pres shell should be here");
|
|
|
|
// Hold a ref to ourselves so DispatchEvent won't destroy us (since
|
|
// we need to access members after we call DispatchEvent).
|
|
nsCOMPtr<nsIPresShell> kungFuDeathGrip(this);
|
|
|
|
#ifdef DEBUG_MOUSE_LOCATION
|
|
printf("[ps=%p]synthesizing mouse move to (%d,%d)\n",
|
|
this, mMouseLocation.x, mMouseLocation.y);
|
|
#endif
|
|
|
|
int32_t APD = mPresContext->AppUnitsPerDevPixel();
|
|
|
|
// We need a widget to put in the event we are going to dispatch so we look
|
|
// for a view that has a widget and the mouse location is over. We first look
|
|
// for floating views, if there isn't one we use the root view. |view| holds
|
|
// that view.
|
|
nsView* view = nullptr;
|
|
|
|
// The appunits per devpixel ratio of |view|.
|
|
int32_t viewAPD;
|
|
|
|
// refPoint will be mMouseLocation relative to the widget of |view|, the
|
|
// widget we will put in the event we dispatch, in viewAPD appunits
|
|
nsPoint refpoint(0, 0);
|
|
|
|
// We always dispatch the event to the pres shell that contains the view that
|
|
// the mouse is over. pointVM is the VM of that pres shell.
|
|
nsViewManager *pointVM = nullptr;
|
|
|
|
// This could be a bit slow (traverses entire view hierarchy)
|
|
// but it's OK to do it once per synthetic mouse event
|
|
view = FindFloatingViewContaining(rootView, mMouseLocation);
|
|
if (!view) {
|
|
view = rootView;
|
|
nsView *pointView = FindViewContaining(rootView, mMouseLocation);
|
|
// pointView can be null in situations related to mouse capture
|
|
pointVM = (pointView ? pointView : view)->GetViewManager();
|
|
refpoint = mMouseLocation + rootView->ViewToWidgetOffset();
|
|
viewAPD = APD;
|
|
} else {
|
|
pointVM = view->GetViewManager();
|
|
nsIFrame* frame = view->GetFrame();
|
|
NS_ASSERTION(frame, "floating views can't be anonymous");
|
|
viewAPD = frame->PresContext()->AppUnitsPerDevPixel();
|
|
refpoint = mMouseLocation.ConvertAppUnits(APD, viewAPD);
|
|
refpoint -= view->GetOffsetTo(rootView);
|
|
refpoint += view->ViewToWidgetOffset();
|
|
}
|
|
NS_ASSERTION(view->GetWidget(), "view should have a widget here");
|
|
nsMouseEvent event(true, NS_MOUSE_MOVE, view->GetWidget(),
|
|
nsMouseEvent::eSynthesized);
|
|
event.refPoint = refpoint.ToNearestPixels(viewAPD);
|
|
event.time = PR_IntervalNow();
|
|
// XXX set event.modifiers ?
|
|
// XXX mnakano I think that we should get the latest information from widget.
|
|
|
|
nsCOMPtr<nsIPresShell> shell = pointVM->GetPresShell();
|
|
if (shell) {
|
|
shell->DispatchSynthMouseMove(&event, !aFromScroll);
|
|
}
|
|
|
|
if (!aFromScroll) {
|
|
mSynthMouseMoveEvent.Forget();
|
|
}
|
|
}
|
|
|
|
/* static */ void
|
|
PresShell::MarkImagesInListVisible(const nsDisplayList& aList)
|
|
{
|
|
for (nsDisplayItem* item = aList.GetBottom(); item; item = item->GetAbove()) {
|
|
nsDisplayList* sublist = item->GetChildren();
|
|
if (sublist) {
|
|
MarkImagesInListVisible(*sublist);
|
|
continue;
|
|
}
|
|
nsIFrame* f = item->Frame();
|
|
// We could check the type of the display item, only a handful can hold an
|
|
// image loading content.
|
|
// dont bother nscomptr here, it is wasteful
|
|
nsCOMPtr<nsIImageLoadingContent> content(do_QueryInterface(f->GetContent()));
|
|
if (content) {
|
|
// use the presshell containing the image
|
|
PresShell* presShell = static_cast<PresShell*>(f->PresContext()->PresShell());
|
|
if (presShell) {
|
|
content->IncrementVisibleCount();
|
|
presShell->mVisibleImages.AppendElement(content);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
void
|
|
PresShell::RebuildImageVisibility(const nsDisplayList& aList)
|
|
{
|
|
MOZ_ASSERT(!mImageVisibilityVisited, "already visited?");
|
|
mImageVisibilityVisited = true;
|
|
nsTArray< nsCOMPtr<nsIImageLoadingContent > > beforeimagelist;
|
|
beforeimagelist.SwapElements(mVisibleImages);
|
|
MarkImagesInListVisible(aList);
|
|
for (uint32_t i = 0; i < beforeimagelist.Length(); ++i) {
|
|
beforeimagelist[i]->DecrementVisibleCount();
|
|
}
|
|
}
|
|
|
|
/* static */ void
|
|
PresShell::ClearImageVisibilityVisited(nsView* aView, bool aClear)
|
|
{
|
|
nsViewManager* vm = aView->GetViewManager();
|
|
if (aClear) {
|
|
PresShell* presShell = static_cast<PresShell*>(vm->GetPresShell());
|
|
if (!presShell->mImageVisibilityVisited) {
|
|
presShell->ClearVisibleImagesList();
|
|
}
|
|
presShell->mImageVisibilityVisited = false;
|
|
}
|
|
for (nsView* v = aView->GetFirstChild(); v; v = v->GetNextSibling()) {
|
|
ClearImageVisibilityVisited(v, v->GetViewManager() != vm);
|
|
}
|
|
}
|
|
|
|
void
|
|
PresShell::ClearVisibleImagesList()
|
|
{
|
|
for (uint32_t i = 0; i < mVisibleImages.Length(); ++i) {
|
|
mVisibleImages[i]->DecrementVisibleCount();
|
|
}
|
|
mVisibleImages.Clear();
|
|
}
|
|
|
|
void
|
|
PresShell::UpdateImageVisibility()
|
|
{
|
|
MOZ_ASSERT(!mPresContext || mPresContext->IsRootContentDocument(),
|
|
"updating image visibility on a non-root content document?");
|
|
|
|
mUpdateImageVisibilityEvent.Revoke();
|
|
|
|
if (mHaveShutDown || mIsDestroying) {
|
|
return;
|
|
}
|
|
|
|
// call update on that frame
|
|
nsIFrame* rootFrame = GetRootFrame();
|
|
if (!rootFrame) {
|
|
ClearVisibleImagesList();
|
|
return;
|
|
}
|
|
|
|
// We could walk the frame tree directly and skip creating a display list for
|
|
// better perf.
|
|
nsRect updateRect(nsPoint(0, 0), rootFrame->GetSize());
|
|
nsDisplayListBuilder builder(rootFrame, nsDisplayListBuilder::IMAGE_VISIBILITY, true);
|
|
builder.IgnorePaintSuppression();
|
|
builder.EnterPresShell(rootFrame, updateRect);
|
|
nsDisplayList list;
|
|
rootFrame->BuildDisplayListForStackingContext(&builder, updateRect, &list);
|
|
builder.LeavePresShell(rootFrame, updateRect);
|
|
|
|
RebuildImageVisibility(list);
|
|
|
|
ClearImageVisibilityVisited(rootFrame->GetView(), true);
|
|
|
|
list.DeleteAll();
|
|
}
|
|
|
|
static bool
|
|
AssumeAllImagesVisible(nsPresContext* aPresContext, nsIDocument* aDocument)
|
|
{
|
|
static bool sImageVisibilityEnabled = true;
|
|
static bool sImageVisibilityPrefCached = false;
|
|
|
|
if (!sImageVisibilityPrefCached) {
|
|
Preferences::AddBoolVarCache(&sImageVisibilityEnabled,
|
|
"layout.imagevisibility.enabled", true);
|
|
sImageVisibilityPrefCached = true;
|
|
}
|
|
|
|
|
|
if (!sImageVisibilityEnabled || !aPresContext || !aDocument)
|
|
return true;
|
|
|
|
// We assume all images are visible in print, print preview, chrome, xul, and
|
|
// resource docs and don't keep track of them.
|
|
if (aPresContext->Type() == nsPresContext::eContext_PrintPreview ||
|
|
aPresContext->Type() == nsPresContext::eContext_Print ||
|
|
aPresContext->IsChrome() ||
|
|
aDocument->IsResourceDoc() ||
|
|
aDocument->IsXUL()) {
|
|
return true;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
void
|
|
PresShell::ScheduleImageVisibilityUpdate()
|
|
{
|
|
if (AssumeAllImagesVisible(mPresContext, mDocument))
|
|
return;
|
|
|
|
if (!mPresContext->IsRootContentDocument()) {
|
|
nsPresContext* presContext = mPresContext->GetToplevelContentDocumentPresContext();
|
|
if (!presContext)
|
|
return;
|
|
MOZ_ASSERT(presContext->IsRootContentDocument(),
|
|
"Didn't get a root prescontext from GetToplevelContentDocumentPresContext?");
|
|
presContext->PresShell()->ScheduleImageVisibilityUpdate();
|
|
return;
|
|
}
|
|
|
|
if (mHaveShutDown || mIsDestroying)
|
|
return;
|
|
|
|
if (mUpdateImageVisibilityEvent.IsPending())
|
|
return;
|
|
|
|
nsRefPtr<nsRunnableMethod<PresShell> > ev =
|
|
NS_NewRunnableMethod(this, &PresShell::UpdateImageVisibility);
|
|
if (NS_SUCCEEDED(NS_DispatchToCurrentThread(ev))) {
|
|
mUpdateImageVisibilityEvent = ev;
|
|
}
|
|
}
|
|
|
|
void
|
|
PresShell::EnsureImageInVisibleList(nsIImageLoadingContent* aImage)
|
|
{
|
|
if (AssumeAllImagesVisible(mPresContext, mDocument)) {
|
|
aImage->IncrementVisibleCount();
|
|
return;
|
|
}
|
|
|
|
#ifdef DEBUG
|
|
// if it has a frame make sure its in this presshell
|
|
nsCOMPtr<nsIContent> content = do_QueryInterface(aImage);
|
|
if (content) {
|
|
PresShell* shell = static_cast<PresShell*>(content->OwnerDoc()->GetShell());
|
|
MOZ_ASSERT(!shell || shell == this, "wrong shell");
|
|
}
|
|
#endif
|
|
|
|
// nsImageLoadingContent doesn't call this function if it has a positive
|
|
// visible count so the image shouldn't be in mVisibleImages. Either way it
|
|
// doesn't hurt to put it in multiple times.
|
|
MOZ_ASSERT(!mVisibleImages.Contains(aImage), "image already in the array");
|
|
mVisibleImages.AppendElement(aImage);
|
|
aImage->IncrementVisibleCount();
|
|
}
|
|
|
|
class nsAutoNotifyDidPaint
|
|
{
|
|
public:
|
|
nsAutoNotifyDidPaint(PresShell* aShell, uint32_t aFlags)
|
|
: mShell(aShell), mFlags(aFlags)
|
|
{
|
|
}
|
|
~nsAutoNotifyDidPaint()
|
|
{
|
|
mShell->GetPresContext()->NotifyDidPaintForSubtree(mFlags);
|
|
}
|
|
|
|
private:
|
|
PresShell* mShell;
|
|
uint32_t mFlags;
|
|
};
|
|
|
|
void
|
|
PresShell::Paint(nsView* aViewToPaint,
|
|
const nsRegion& aDirtyRegion,
|
|
uint32_t aFlags)
|
|
{
|
|
PROFILER_LABEL("Paint", "PresShell::Paint");
|
|
NS_ASSERTION(!mIsDestroying, "painting a destroyed PresShell");
|
|
NS_ASSERTION(aViewToPaint, "null view");
|
|
|
|
MOZ_ASSERT(!mImageVisibilityVisited, "should have been cleared");
|
|
|
|
if (!mIsActive || mIsZombie) {
|
|
return;
|
|
}
|
|
|
|
nsPresContext* presContext = GetPresContext();
|
|
AUTO_LAYOUT_PHASE_ENTRY_POINT(presContext, Paint);
|
|
|
|
nsIFrame* frame = aViewToPaint->GetFrame();
|
|
|
|
bool isRetainingManager;
|
|
LayerManager* layerManager =
|
|
aViewToPaint->GetWidget()->GetLayerManager(&isRetainingManager);
|
|
NS_ASSERTION(layerManager, "Must be in paint event");
|
|
bool shouldInvalidate = layerManager->NeedsWidgetInvalidation();
|
|
|
|
uint32_t didPaintFlags = aFlags;
|
|
if (!shouldInvalidate) {
|
|
didPaintFlags |= PAINT_COMPOSITE;
|
|
}
|
|
nsAutoNotifyDidPaint notifyDidPaint(this, didPaintFlags);
|
|
|
|
// Whether or not we should set first paint when painting is
|
|
// suppressed is debatable. For now we'll do it because
|
|
// B2G relies on first paint to configure the viewport and
|
|
// we only want to do that when we have real content to paint.
|
|
// See Bug 798245
|
|
if (mIsFirstPaint && !mPaintingSuppressed) {
|
|
layerManager->SetIsFirstPaint();
|
|
mIsFirstPaint = false;
|
|
}
|
|
|
|
if (frame && isRetainingManager) {
|
|
// Try to do an empty transaction, if the frame tree does not
|
|
// need to be updated. Do not try to do an empty transaction on
|
|
// a non-retained layer manager (like the BasicLayerManager that
|
|
// draws the window title bar on Mac), because a) it won't work
|
|
// and b) below we don't want to clear NS_FRAME_UPDATE_LAYER_TREE,
|
|
// that will cause us to forget to update the real layer manager!
|
|
if (!(aFlags & PAINT_LAYERS)) {
|
|
layerManager->BeginTransaction();
|
|
if (layerManager->EndEmptyTransaction()) {
|
|
return;
|
|
}
|
|
NS_WARNING("Must complete empty transaction when compositing!");
|
|
} else {
|
|
layerManager->BeginTransaction();
|
|
}
|
|
|
|
if (!(frame->GetStateBits() & NS_FRAME_UPDATE_LAYER_TREE)) {
|
|
NotifySubDocInvalidationFunc computeInvalidFunc =
|
|
presContext->MayHavePaintEventListenerInSubDocument() ? nsPresContext::NotifySubDocInvalidation : 0;
|
|
bool computeInvalidRect = computeInvalidFunc ||
|
|
(layerManager->GetBackendType() == LAYERS_BASIC);
|
|
|
|
nsAutoPtr<LayerProperties> props(computeInvalidRect ?
|
|
LayerProperties::CloneFrom(layerManager->GetRoot()) :
|
|
nullptr);
|
|
|
|
if (layerManager->EndEmptyTransaction((aFlags & PAINT_COMPOSITE) ?
|
|
LayerManager::END_DEFAULT : LayerManager::END_NO_COMPOSITE)) {
|
|
nsIntRegion invalid;
|
|
if (props) {
|
|
invalid = props->ComputeDifferences(layerManager->GetRoot(), computeInvalidFunc);
|
|
} else {
|
|
LayerProperties::ClearInvalidations(layerManager->GetRoot());
|
|
}
|
|
if (props) {
|
|
if (!invalid.IsEmpty()) {
|
|
nsIntRect bounds = invalid.GetBounds();
|
|
nsRect rect(presContext->DevPixelsToAppUnits(bounds.x),
|
|
presContext->DevPixelsToAppUnits(bounds.y),
|
|
presContext->DevPixelsToAppUnits(bounds.width),
|
|
presContext->DevPixelsToAppUnits(bounds.height));
|
|
if (shouldInvalidate) {
|
|
aViewToPaint->GetViewManager()->InvalidateViewNoSuppression(aViewToPaint, rect);
|
|
}
|
|
presContext->NotifyInvalidation(bounds, 0);
|
|
}
|
|
} else if (shouldInvalidate) {
|
|
aViewToPaint->GetViewManager()->InvalidateView(aViewToPaint);
|
|
}
|
|
|
|
frame->UpdatePaintCountForPaintedPresShells();
|
|
return;
|
|
}
|
|
}
|
|
frame->RemoveStateBits(NS_FRAME_UPDATE_LAYER_TREE);
|
|
} else {
|
|
layerManager->BeginTransaction();
|
|
}
|
|
if (frame) {
|
|
frame->ClearPresShellsFromLastPaint();
|
|
}
|
|
|
|
nscolor bgcolor = ComputeBackstopColor(aViewToPaint);
|
|
uint32_t flags = nsLayoutUtils::PAINT_WIDGET_LAYERS | nsLayoutUtils::PAINT_EXISTING_TRANSACTION;
|
|
if (!(aFlags & PAINT_COMPOSITE)) {
|
|
flags |= nsLayoutUtils::PAINT_NO_COMPOSITE;
|
|
}
|
|
|
|
if (frame) {
|
|
// We can paint directly into the widget using its layer manager.
|
|
nsLayoutUtils::PaintFrame(nullptr, frame, aDirtyRegion, bgcolor, flags);
|
|
return;
|
|
}
|
|
|
|
nsRefPtr<ColorLayer> root = layerManager->CreateColorLayer();
|
|
if (root) {
|
|
nsPresContext* pc = GetPresContext();
|
|
nsIntRect bounds =
|
|
pc->GetVisibleArea().ToOutsidePixels(pc->AppUnitsPerDevPixel());
|
|
bgcolor = NS_ComposeColors(bgcolor, mCanvasBackgroundColor);
|
|
root->SetColor(bgcolor);
|
|
root->SetVisibleRegion(bounds);
|
|
layerManager->SetRoot(root);
|
|
}
|
|
layerManager->EndTransaction(NULL, NULL, (aFlags & PAINT_COMPOSITE) ?
|
|
LayerManager::END_DEFAULT : LayerManager::END_NO_COMPOSITE);
|
|
}
|
|
|
|
// static
|
|
void
|
|
nsIPresShell::SetCapturingContent(nsIContent* aContent, uint8_t aFlags)
|
|
{
|
|
// If capture was set for pointer lock, don't unlock unless we are coming
|
|
// out of pointer lock explicitly.
|
|
if (!aContent && gCaptureInfo.mPointerLock &&
|
|
!(aFlags & CAPTURE_POINTERLOCK)) {
|
|
return;
|
|
}
|
|
|
|
NS_IF_RELEASE(gCaptureInfo.mContent);
|
|
|
|
// only set capturing content if allowed or the CAPTURE_IGNOREALLOWED or
|
|
// CAPTURE_POINTERLOCK flags are used.
|
|
if ((aFlags & CAPTURE_IGNOREALLOWED) || gCaptureInfo.mAllowed ||
|
|
(aFlags & CAPTURE_POINTERLOCK)) {
|
|
if (aContent) {
|
|
NS_ADDREF(gCaptureInfo.mContent = aContent);
|
|
}
|
|
// CAPTURE_POINTERLOCK is the same as CAPTURE_RETARGETTOELEMENT & CAPTURE_IGNOREALLOWED
|
|
gCaptureInfo.mRetargetToElement = ((aFlags & CAPTURE_RETARGETTOELEMENT) != 0) ||
|
|
((aFlags & CAPTURE_POINTERLOCK) != 0);
|
|
gCaptureInfo.mPreventDrag = (aFlags & CAPTURE_PREVENTDRAG) != 0;
|
|
gCaptureInfo.mPointerLock = (aFlags & CAPTURE_POINTERLOCK) != 0;
|
|
}
|
|
}
|
|
|
|
nsIContent*
|
|
PresShell::GetCurrentEventContent()
|
|
{
|
|
if (mCurrentEventContent &&
|
|
mCurrentEventContent->GetCurrentDoc() != mDocument) {
|
|
mCurrentEventContent = nullptr;
|
|
mCurrentEventFrame = nullptr;
|
|
}
|
|
return mCurrentEventContent;
|
|
}
|
|
|
|
nsIFrame*
|
|
PresShell::GetCurrentEventFrame()
|
|
{
|
|
if (MOZ_UNLIKELY(mIsDestroying)) {
|
|
return nullptr;
|
|
}
|
|
|
|
// GetCurrentEventContent() makes sure the content is still in the
|
|
// same document that this pres shell belongs to. If not, then the
|
|
// frame shouldn't get an event, nor should we even assume its safe
|
|
// to try and find the frame.
|
|
nsIContent* content = GetCurrentEventContent();
|
|
if (!mCurrentEventFrame && content) {
|
|
mCurrentEventFrame = content->GetPrimaryFrame();
|
|
MOZ_ASSERT(!mCurrentEventFrame ||
|
|
mCurrentEventFrame->PresContext()->GetPresShell() == this);
|
|
}
|
|
return mCurrentEventFrame;
|
|
}
|
|
|
|
nsIFrame*
|
|
PresShell::GetEventTargetFrame()
|
|
{
|
|
return GetCurrentEventFrame();
|
|
}
|
|
|
|
already_AddRefed<nsIContent>
|
|
PresShell::GetEventTargetContent(nsEvent* aEvent)
|
|
{
|
|
nsCOMPtr<nsIContent> content = GetCurrentEventContent();
|
|
if (!content) {
|
|
nsIFrame* currentEventFrame = GetCurrentEventFrame();
|
|
if (currentEventFrame) {
|
|
currentEventFrame->GetContentForEvent(aEvent, getter_AddRefs(content));
|
|
NS_ASSERTION(!content || content->GetCurrentDoc() == mDocument,
|
|
"handing out content from a different doc");
|
|
}
|
|
}
|
|
return content.forget();
|
|
}
|
|
|
|
void
|
|
PresShell::PushCurrentEventInfo(nsIFrame* aFrame, nsIContent* aContent)
|
|
{
|
|
if (mCurrentEventFrame || mCurrentEventContent) {
|
|
mCurrentEventFrameStack.InsertElementAt(0, mCurrentEventFrame);
|
|
mCurrentEventContentStack.InsertObjectAt(mCurrentEventContent, 0);
|
|
}
|
|
mCurrentEventFrame = aFrame;
|
|
mCurrentEventContent = aContent;
|
|
}
|
|
|
|
void
|
|
PresShell::PopCurrentEventInfo()
|
|
{
|
|
mCurrentEventFrame = nullptr;
|
|
mCurrentEventContent = nullptr;
|
|
|
|
if (0 != mCurrentEventFrameStack.Length()) {
|
|
mCurrentEventFrame = mCurrentEventFrameStack.ElementAt(0);
|
|
mCurrentEventFrameStack.RemoveElementAt(0);
|
|
mCurrentEventContent = mCurrentEventContentStack.ObjectAt(0);
|
|
mCurrentEventContentStack.RemoveObjectAt(0);
|
|
|
|
// Don't use it if it has moved to a different document.
|
|
if (mCurrentEventContent &&
|
|
mCurrentEventContent->GetCurrentDoc() != mDocument) {
|
|
mCurrentEventContent = nullptr;
|
|
mCurrentEventFrame = nullptr;
|
|
}
|
|
}
|
|
}
|
|
|
|
bool PresShell::InZombieDocument(nsIContent *aContent)
|
|
{
|
|
// If a content node points to a null document, or the document is not
|
|
// attached to a window, then it is possibly in a zombie document,
|
|
// about to be replaced by a newly loading document.
|
|
// Such documents cannot handle DOM events.
|
|
// It might actually be in a node not attached to any document,
|
|
// in which case there is not parent presshell to retarget it to.
|
|
nsIDocument *doc = aContent->GetDocument();
|
|
return !doc || !doc->GetWindow();
|
|
}
|
|
|
|
already_AddRefed<nsPIDOMWindow>
|
|
PresShell::GetRootWindow()
|
|
{
|
|
nsCOMPtr<nsPIDOMWindow> window =
|
|
do_QueryInterface(mDocument->GetWindow());
|
|
if (window) {
|
|
nsCOMPtr<nsPIDOMWindow> rootWindow = window->GetPrivateRoot();
|
|
NS_ASSERTION(rootWindow, "nsPIDOMWindow::GetPrivateRoot() returns NULL");
|
|
return rootWindow.forget();
|
|
}
|
|
|
|
// If we don't have DOM window, we're zombie, we should find the root window
|
|
// with our parent shell.
|
|
nsCOMPtr<nsIPresShell> parent = GetParentPresShell();
|
|
NS_ENSURE_TRUE(parent, nullptr);
|
|
return parent->GetRootWindow();
|
|
}
|
|
|
|
already_AddRefed<nsIPresShell>
|
|
PresShell::GetParentPresShell()
|
|
{
|
|
NS_ENSURE_TRUE(mPresContext, nullptr);
|
|
nsCOMPtr<nsISupports> container = mPresContext->GetContainer();
|
|
if (!container) {
|
|
container = do_QueryReferent(mForwardingContainer);
|
|
}
|
|
|
|
// Now, find the parent pres shell and send the event there
|
|
nsCOMPtr<nsIDocShellTreeItem> treeItem = do_QueryInterface(container);
|
|
// Might have gone away, or never been around to start with
|
|
NS_ENSURE_TRUE(treeItem, nullptr);
|
|
|
|
nsCOMPtr<nsIDocShellTreeItem> parentTreeItem;
|
|
treeItem->GetParent(getter_AddRefs(parentTreeItem));
|
|
nsCOMPtr<nsIDocShell> parentDocShell = do_QueryInterface(parentTreeItem);
|
|
NS_ENSURE_TRUE(parentDocShell && treeItem != parentTreeItem, nullptr);
|
|
|
|
nsCOMPtr<nsIPresShell> parentPresShell = parentDocShell->GetPresShell();
|
|
return parentPresShell.forget();
|
|
}
|
|
|
|
nsresult
|
|
PresShell::RetargetEventToParent(nsGUIEvent* aEvent,
|
|
nsEventStatus* aEventStatus)
|
|
{
|
|
// Send this events straight up to the parent pres shell.
|
|
// We do this for keystroke events in zombie documents or if either a frame
|
|
// or a root content is not present.
|
|
// That way at least the UI key bindings can work.
|
|
|
|
nsCOMPtr<nsIPresShell> kungFuDeathGrip(this);
|
|
nsCOMPtr<nsIPresShell> parentPresShell = GetParentPresShell();
|
|
NS_ENSURE_TRUE(parentPresShell, NS_ERROR_FAILURE);
|
|
|
|
// Fake the event as though it's from the parent pres shell's root frame.
|
|
return parentPresShell->HandleEvent(parentPresShell->GetRootFrame(), aEvent, true, aEventStatus);
|
|
}
|
|
|
|
void
|
|
PresShell::DisableNonTestMouseEvents(bool aDisable)
|
|
{
|
|
sDisableNonTestMouseEvents = aDisable;
|
|
}
|
|
|
|
already_AddRefed<nsPIDOMWindow>
|
|
PresShell::GetFocusedDOMWindowInOurWindow()
|
|
{
|
|
nsCOMPtr<nsPIDOMWindow> rootWindow = GetRootWindow();
|
|
NS_ENSURE_TRUE(rootWindow, nullptr);
|
|
nsCOMPtr<nsPIDOMWindow> focusedWindow;
|
|
nsFocusManager::GetFocusedDescendant(rootWindow, true,
|
|
getter_AddRefs(focusedWindow));
|
|
return focusedWindow.forget();
|
|
}
|
|
|
|
void
|
|
PresShell::RecordMouseLocation(nsGUIEvent* aEvent)
|
|
{
|
|
if (!mPresContext)
|
|
return;
|
|
|
|
if (!mPresContext->IsRoot()) {
|
|
PresShell* rootPresShell = GetRootPresShell();
|
|
if (rootPresShell) {
|
|
rootPresShell->RecordMouseLocation(aEvent);
|
|
}
|
|
return;
|
|
}
|
|
|
|
if ((aEvent->message == NS_MOUSE_MOVE &&
|
|
static_cast<nsMouseEvent*>(aEvent)->reason == nsMouseEvent::eReal) ||
|
|
aEvent->message == NS_MOUSE_ENTER ||
|
|
aEvent->message == NS_MOUSE_BUTTON_DOWN ||
|
|
aEvent->message == NS_MOUSE_BUTTON_UP) {
|
|
nsIFrame* rootFrame = GetRootFrame();
|
|
if (!rootFrame) {
|
|
nsView* rootView = mViewManager->GetRootView();
|
|
mMouseLocation = nsLayoutUtils::TranslateWidgetToView(mPresContext,
|
|
aEvent->widget, aEvent->refPoint, rootView);
|
|
} else {
|
|
mMouseLocation =
|
|
nsLayoutUtils::GetEventCoordinatesRelativeTo(aEvent, rootFrame);
|
|
}
|
|
#ifdef DEBUG_MOUSE_LOCATION
|
|
if (aEvent->message == NS_MOUSE_ENTER)
|
|
printf("[ps=%p]got mouse enter for %p\n",
|
|
this, aEvent->widget);
|
|
printf("[ps=%p]setting mouse location to (%d,%d)\n",
|
|
this, mMouseLocation.x, mMouseLocation.y);
|
|
#endif
|
|
if (aEvent->message == NS_MOUSE_ENTER)
|
|
SynthesizeMouseMove(false);
|
|
} else if (aEvent->message == NS_MOUSE_EXIT) {
|
|
// Although we only care about the mouse moving into an area for which this
|
|
// pres shell doesn't receive mouse move events, we don't check which widget
|
|
// the mouse exit was for since this seems to vary by platform. Hopefully
|
|
// this won't matter at all since we'll get the mouse move or enter after
|
|
// the mouse exit when the mouse moves from one of our widgets into another.
|
|
mMouseLocation = nsPoint(NS_UNCONSTRAINEDSIZE, NS_UNCONSTRAINEDSIZE);
|
|
#ifdef DEBUG_MOUSE_LOCATION
|
|
printf("[ps=%p]got mouse exit for %p\n",
|
|
this, aEvent->widget);
|
|
printf("[ps=%p]clearing mouse location\n",
|
|
this);
|
|
#endif
|
|
}
|
|
}
|
|
|
|
static void
|
|
EvictTouchPoint(nsRefPtr<dom::Touch>& aTouch)
|
|
{
|
|
nsIWidget *widget = nullptr;
|
|
// is there an easier/better way to dig out the widget?
|
|
nsCOMPtr<nsINode> node(do_QueryInterface(aTouch->mTarget));
|
|
if (!node) {
|
|
return;
|
|
}
|
|
nsIDocument* doc = node->GetCurrentDoc();
|
|
if (!doc) {
|
|
return;
|
|
}
|
|
nsIPresShell *presShell = doc->GetShell();
|
|
if (!presShell) {
|
|
return;
|
|
}
|
|
nsIFrame* frame = presShell->GetRootFrame();
|
|
if (!frame) {
|
|
return;
|
|
}
|
|
nsPoint pt(aTouch->mRefPoint.x, aTouch->mRefPoint.y);
|
|
widget = frame->GetView()->GetNearestWidget(&pt);
|
|
|
|
if (!widget) {
|
|
return;
|
|
}
|
|
|
|
nsTouchEvent event(true, NS_TOUCH_END, widget);
|
|
event.widget = widget;
|
|
event.time = PR_IntervalNow();
|
|
event.touches.AppendElement(aTouch);
|
|
|
|
nsEventStatus status;
|
|
widget->DispatchEvent(&event, status);
|
|
}
|
|
|
|
static PLDHashOperator
|
|
AppendToTouchList(const uint32_t& aKey, nsRefPtr<dom::Touch>& aData, void *aTouchList)
|
|
{
|
|
nsTArray< nsRefPtr<dom::Touch> >* touches =
|
|
static_cast<nsTArray< nsRefPtr<dom::Touch> >*>(aTouchList);
|
|
aData->mChanged = false;
|
|
touches->AppendElement(aData);
|
|
return PL_DHASH_NEXT;
|
|
}
|
|
|
|
static PLDHashOperator
|
|
FindAnyTarget(const uint32_t& aKey, nsRefPtr<dom::Touch>& aData,
|
|
void* aAnyTarget)
|
|
{
|
|
if (aData) {
|
|
dom::EventTarget* target = aData->Target();
|
|
if (target) {
|
|
nsCOMPtr<nsIContent>* content =
|
|
static_cast<nsCOMPtr<nsIContent>*>(aAnyTarget);
|
|
*content = do_QueryInterface(target);
|
|
return PL_DHASH_STOP;
|
|
}
|
|
}
|
|
return PL_DHASH_NEXT;
|
|
}
|
|
|
|
nsIFrame* GetNearestFrameContainingPresShell(nsIPresShell* aPresShell)
|
|
{
|
|
nsView* view = aPresShell->GetViewManager()->GetRootView();
|
|
while (view && !view->GetFrame()) {
|
|
view = view->GetParent();
|
|
}
|
|
|
|
nsIFrame* frame = nullptr;
|
|
if (view) {
|
|
frame = view->GetFrame();
|
|
}
|
|
|
|
return frame;
|
|
}
|
|
|
|
nsresult
|
|
PresShell::HandleEvent(nsIFrame *aFrame,
|
|
nsGUIEvent* aEvent,
|
|
bool aDontRetargetEvents,
|
|
nsEventStatus* aEventStatus)
|
|
{
|
|
NS_ASSERTION(aFrame, "null frame");
|
|
|
|
if (mIsDestroying ||
|
|
(sDisableNonTestMouseEvents && !aEvent->mFlags.mIsSynthesizedForTests &&
|
|
NS_IS_MOUSE_EVENT(aEvent))) {
|
|
return NS_OK;
|
|
}
|
|
|
|
RecordMouseLocation(aEvent);
|
|
|
|
if (!nsContentUtils::IsSafeToRunScript())
|
|
return NS_OK;
|
|
|
|
nsIContent* capturingContent =
|
|
NS_IS_MOUSE_EVENT(aEvent) || aEvent->eventStructType == NS_WHEEL_EVENT ?
|
|
GetCapturingContent() : nullptr;
|
|
|
|
nsCOMPtr<nsIDocument> retargetEventDoc;
|
|
if (!aDontRetargetEvents) {
|
|
// key and IME related events should not cross top level window boundary.
|
|
// Basically, such input events should be fired only on focused widget.
|
|
// However, some IMEs might need to clean up composition after focused
|
|
// window is deactivated. And also some tests on MozMill want to test key
|
|
// handling on deactivated window because MozMill window can be activated
|
|
// during tests. So, there is no merit the events should be redirected to
|
|
// active window. So, the events should be handled on the last focused
|
|
// content in the last focused DOM window in same top level window.
|
|
// Note, if no DOM window has been focused yet, we can discard the events.
|
|
if (NS_IsEventTargetedAtFocusedWindow(aEvent)) {
|
|
nsCOMPtr<nsPIDOMWindow> window = GetFocusedDOMWindowInOurWindow();
|
|
// No DOM window in same top level window has not been focused yet,
|
|
// discard the events.
|
|
if (!window) {
|
|
return NS_OK;
|
|
}
|
|
|
|
retargetEventDoc = window->GetExtantDoc();
|
|
if (!retargetEventDoc)
|
|
return NS_OK;
|
|
} else if (capturingContent) {
|
|
// if the mouse is being captured then retarget the mouse event at the
|
|
// document that is being captured.
|
|
retargetEventDoc = capturingContent->GetCurrentDoc();
|
|
#ifdef ANDROID
|
|
} else if (aEvent->eventStructType == NS_TOUCH_EVENT) {
|
|
retargetEventDoc = GetTouchEventTargetDocument();
|
|
#endif
|
|
}
|
|
|
|
if (retargetEventDoc) {
|
|
nsCOMPtr<nsIPresShell> presShell = retargetEventDoc->GetShell();
|
|
if (!presShell)
|
|
return NS_OK;
|
|
|
|
if (presShell != this) {
|
|
nsIFrame* frame = presShell->GetRootFrame();
|
|
if (!frame) {
|
|
if (aEvent->message == NS_QUERY_TEXT_CONTENT ||
|
|
NS_IS_CONTENT_COMMAND_EVENT(aEvent)) {
|
|
return NS_OK;
|
|
}
|
|
|
|
frame = GetNearestFrameContainingPresShell(presShell);
|
|
}
|
|
|
|
if (!frame)
|
|
return NS_OK;
|
|
|
|
nsCOMPtr<nsIPresShell> shell = frame->PresContext()->GetPresShell();
|
|
return shell->HandleEvent(frame, aEvent, true, aEventStatus);
|
|
}
|
|
}
|
|
}
|
|
|
|
if (aEvent->eventStructType == NS_KEY_EVENT &&
|
|
mDocument && mDocument->EventHandlingSuppressed()) {
|
|
if (aEvent->message == NS_KEY_DOWN) {
|
|
mNoDelayedKeyEvents = true;
|
|
} else if (!mNoDelayedKeyEvents) {
|
|
nsDelayedEvent* event =
|
|
new nsDelayedKeyEvent(static_cast<nsKeyEvent*>(aEvent));
|
|
if (!mDelayedEvents.AppendElement(event)) {
|
|
delete event;
|
|
}
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
nsIFrame* frame = aFrame;
|
|
|
|
if (aEvent->eventStructType == NS_TOUCH_EVENT) {
|
|
nsIDocument::UnlockPointer();
|
|
FlushPendingNotifications(Flush_Layout);
|
|
frame = GetNearestFrameContainingPresShell(this);
|
|
}
|
|
|
|
bool dispatchUsingCoordinates = NS_IsEventUsingCoordinates(aEvent);
|
|
if (dispatchUsingCoordinates) {
|
|
NS_WARN_IF_FALSE(frame, "Nothing to handle this event!");
|
|
if (!frame)
|
|
return NS_OK;
|
|
|
|
nsPresContext* framePresContext = frame->PresContext();
|
|
nsPresContext* rootPresContext = framePresContext->GetRootPresContext();
|
|
NS_ASSERTION(rootPresContext == mPresContext->GetRootPresContext(),
|
|
"How did we end up outside the connected prescontext/viewmanager hierarchy?");
|
|
// If we aren't starting our event dispatch from the root frame of the root prescontext,
|
|
// then someone must be capturing the mouse. In that case we don't want to search the popup
|
|
// list.
|
|
if (framePresContext == rootPresContext &&
|
|
frame == mFrameConstructor->GetRootFrame()) {
|
|
nsIFrame* popupFrame =
|
|
nsLayoutUtils::GetPopupFrameForEventCoordinates(rootPresContext, aEvent);
|
|
// If the popupFrame is an ancestor of the 'frame', the frame should
|
|
// handle the event, otherwise, the popup should handle it.
|
|
if (popupFrame &&
|
|
!nsContentUtils::ContentIsCrossDocDescendantOf(
|
|
framePresContext->GetPresShell()->GetDocument(),
|
|
popupFrame->GetContent())) {
|
|
frame = popupFrame;
|
|
}
|
|
}
|
|
|
|
bool captureRetarget = false;
|
|
if (capturingContent) {
|
|
// If a capture is active, determine if the docshell is visible. If not,
|
|
// clear the capture and target the mouse event normally instead. This
|
|
// would occur if the mouse button is held down while a tab change occurs.
|
|
// If the docshell is visible, look for a scrolling container.
|
|
bool vis;
|
|
nsCOMPtr<nsISupports> supports = mPresContext->GetContainer();
|
|
nsCOMPtr<nsIBaseWindow> baseWin(do_QueryInterface(supports));
|
|
if (baseWin && NS_SUCCEEDED(baseWin->GetVisibility(&vis)) && vis) {
|
|
captureRetarget = gCaptureInfo.mRetargetToElement;
|
|
if (!captureRetarget) {
|
|
// A check was already done above to ensure that capturingContent is
|
|
// in this presshell.
|
|
NS_ASSERTION(capturingContent->GetCurrentDoc() == GetDocument(),
|
|
"Unexpected document");
|
|
nsIFrame* captureFrame = capturingContent->GetPrimaryFrame();
|
|
if (captureFrame) {
|
|
if (capturingContent->Tag() == nsGkAtoms::select &&
|
|
capturingContent->IsHTML()) {
|
|
// a dropdown <select> has a child in its selectPopupList and we should
|
|
// capture on that instead.
|
|
nsIFrame* childFrame = captureFrame->GetChildList(nsIFrame::kSelectPopupList).FirstChild();
|
|
if (childFrame) {
|
|
captureFrame = childFrame;
|
|
}
|
|
}
|
|
|
|
// scrollable frames should use the scrolling container as
|
|
// the root instead of the document
|
|
nsIScrollableFrame* scrollFrame = do_QueryFrame(captureFrame);
|
|
if (scrollFrame) {
|
|
frame = scrollFrame->GetScrolledFrame();
|
|
}
|
|
}
|
|
}
|
|
}
|
|
else {
|
|
ClearMouseCapture(nullptr);
|
|
capturingContent = nullptr;
|
|
}
|
|
}
|
|
|
|
// all touch events except for touchstart use a captured target
|
|
if (aEvent->eventStructType == NS_TOUCH_EVENT &&
|
|
aEvent->message != NS_TOUCH_START) {
|
|
captureRetarget = true;
|
|
}
|
|
|
|
bool isWindowLevelMouseExit = (aEvent->message == NS_MOUSE_EXIT) &&
|
|
(static_cast<nsMouseEvent*>(aEvent)->exit == nsMouseEvent::eTopLevel);
|
|
|
|
// Get the frame at the event point. However, don't do this if we're
|
|
// capturing and retargeting the event because the captured frame will
|
|
// be used instead below. Also keep using the root frame if we're dealing
|
|
// with a window-level mouse exit event since we want to start sending
|
|
// mouse out events at the root EventStateManager.
|
|
if (!captureRetarget && !isWindowLevelMouseExit) {
|
|
nsPoint eventPoint;
|
|
if (aEvent->message == NS_TOUCH_START) {
|
|
nsTouchEvent* touchEvent = static_cast<nsTouchEvent*>(aEvent);
|
|
// if this is a continuing session, ensure that all these events are
|
|
// in the same document by taking the target of the events already in
|
|
// the capture list
|
|
nsCOMPtr<nsIContent> anyTarget;
|
|
if (gCaptureTouchList.Count() > 0) {
|
|
gCaptureTouchList.Enumerate(&FindAnyTarget, &anyTarget);
|
|
} else {
|
|
gPreventMouseEvents = false;
|
|
}
|
|
|
|
for (int32_t i = touchEvent->touches.Length(); i; ) {
|
|
--i;
|
|
dom::Touch* touch = touchEvent->touches[i];
|
|
|
|
int32_t id = touch->Identifier();
|
|
if (!gCaptureTouchList.Get(id, nullptr)) {
|
|
// find the target for this touch
|
|
uint32_t flags = 0;
|
|
eventPoint = nsLayoutUtils::GetEventCoordinatesRelativeTo(aEvent,
|
|
touch->mRefPoint,
|
|
frame);
|
|
nsIFrame* target = FindFrameTargetedByInputEvent(aEvent,
|
|
frame,
|
|
eventPoint,
|
|
flags);
|
|
if (target && !anyTarget) {
|
|
target->GetContentForEvent(aEvent, getter_AddRefs(anyTarget));
|
|
while (anyTarget && !anyTarget->IsElement()) {
|
|
anyTarget = anyTarget->GetParent();
|
|
}
|
|
touch->SetTarget(anyTarget);
|
|
} else {
|
|
nsIFrame* newTargetFrame = nullptr;
|
|
for (nsIFrame* f = target; f;
|
|
f = nsLayoutUtils::GetParentOrPlaceholderForCrossDoc(f)) {
|
|
if (f->PresContext()->Document() == anyTarget->OwnerDoc()) {
|
|
newTargetFrame = f;
|
|
break;
|
|
}
|
|
// We must be in a subdocument so jump directly to the root frame.
|
|
// GetParentOrPlaceholderForCrossDoc gets called immediately to
|
|
// jump up to the containing document.
|
|
f = f->PresContext()->GetPresShell()->GetRootFrame();
|
|
}
|
|
|
|
// if we couldn't find a target frame in the same document as
|
|
// anyTarget, remove the touch from the capture touch list, as
|
|
// well as the event->touches array. touchmove events that aren't
|
|
// in the captured touch list will be discarded
|
|
if (!newTargetFrame) {
|
|
touchEvent->touches.RemoveElementAt(i);
|
|
} else {
|
|
target = newTargetFrame;
|
|
nsCOMPtr<nsIContent> targetContent;
|
|
target->GetContentForEvent(aEvent, getter_AddRefs(targetContent));
|
|
while (targetContent && !targetContent->IsElement()) {
|
|
targetContent = targetContent->GetParent();
|
|
}
|
|
touch->SetTarget(targetContent);
|
|
}
|
|
}
|
|
if (target) {
|
|
frame = target;
|
|
}
|
|
} else {
|
|
// This touch is an old touch, we need to ensure that is not
|
|
// marked as changed and set its target correctly
|
|
touch->mChanged = false;
|
|
int32_t id = touch->Identifier();
|
|
|
|
nsRefPtr<dom::Touch> oldTouch = gCaptureTouchList.GetWeak(id);
|
|
if (oldTouch) {
|
|
touch->SetTarget(oldTouch->mTarget);
|
|
}
|
|
}
|
|
}
|
|
} else {
|
|
eventPoint = nsLayoutUtils::GetEventCoordinatesRelativeTo(aEvent, frame);
|
|
}
|
|
uint32_t flags = 0;
|
|
if (aEvent->eventStructType == NS_MOUSE_EVENT &&
|
|
static_cast<nsMouseEvent*>(aEvent)->ignoreRootScrollFrame) {
|
|
flags |= INPUT_IGNORE_ROOT_SCROLL_FRAME;
|
|
}
|
|
nsIFrame* target =
|
|
FindFrameTargetedByInputEvent(aEvent, frame, eventPoint, flags);
|
|
if (target) {
|
|
frame = target;
|
|
}
|
|
}
|
|
|
|
// if a node is capturing the mouse, check if the event needs to be
|
|
// retargeted at the capturing content instead. This will be the case when
|
|
// capture retargeting is being used, no frame was found or the frame's
|
|
// content is not a descendant of the capturing content.
|
|
if (capturingContent &&
|
|
(gCaptureInfo.mRetargetToElement || !frame->GetContent() ||
|
|
!nsContentUtils::ContentIsCrossDocDescendantOf(frame->GetContent(),
|
|
capturingContent))) {
|
|
// A check was already done above to ensure that capturingContent is
|
|
// in this presshell.
|
|
NS_ASSERTION(capturingContent->GetCurrentDoc() == GetDocument(),
|
|
"Unexpected document");
|
|
nsIFrame* capturingFrame = capturingContent->GetPrimaryFrame();
|
|
if (capturingFrame) {
|
|
frame = capturingFrame;
|
|
}
|
|
}
|
|
|
|
// Suppress mouse event if it's being targeted at an element inside
|
|
// a document which needs events suppressed
|
|
if (aEvent->eventStructType == NS_MOUSE_EVENT &&
|
|
frame->PresContext()->Document()->EventHandlingSuppressed()) {
|
|
if (aEvent->message == NS_MOUSE_BUTTON_DOWN) {
|
|
mNoDelayedMouseEvents = true;
|
|
} else if (!mNoDelayedMouseEvents && aEvent->message == NS_MOUSE_BUTTON_UP) {
|
|
nsDelayedEvent* event =
|
|
new nsDelayedMouseEvent(static_cast<nsMouseEvent*>(aEvent));
|
|
if (!mDelayedEvents.AppendElement(event)) {
|
|
delete event;
|
|
}
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
PresShell* shell =
|
|
static_cast<PresShell*>(frame->PresContext()->PresShell());
|
|
switch (aEvent->message) {
|
|
case NS_TOUCH_MOVE:
|
|
case NS_TOUCH_CANCEL:
|
|
case NS_TOUCH_END: {
|
|
// get the correct shell to dispatch to
|
|
nsTouchEvent* touchEvent = static_cast<nsTouchEvent*>(aEvent);
|
|
nsTArray< nsRefPtr<dom::Touch> >& touches = touchEvent->touches;
|
|
for (uint32_t i = 0; i < touches.Length(); ++i) {
|
|
dom::Touch* touch = touches[i];
|
|
if (!touch) {
|
|
break;
|
|
}
|
|
|
|
nsRefPtr<dom::Touch> oldTouch =
|
|
gCaptureTouchList.GetWeak(touch->Identifier());
|
|
if (!oldTouch) {
|
|
break;
|
|
}
|
|
|
|
nsCOMPtr<nsIContent> content =
|
|
do_QueryInterface(oldTouch->Target());
|
|
if (!content) {
|
|
break;
|
|
}
|
|
|
|
nsIFrame* contentFrame = content->GetPrimaryFrame();
|
|
if (!contentFrame) {
|
|
break;
|
|
}
|
|
|
|
shell = static_cast<PresShell*>(
|
|
contentFrame->PresContext()->PresShell());
|
|
if (shell) {
|
|
break;
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
|
|
// Check if we have an active EventStateManager which isn't the
|
|
// EventStateManager of the current PresContext.
|
|
// If that is the case, and mouse is over some ancestor document,
|
|
// forward event handling to the active document.
|
|
// This way content can get mouse events even when
|
|
// mouse is over the chrome or outside the window.
|
|
//
|
|
// Note, currently for backwards compatibility we don't forward mouse events
|
|
// to the active document when mouse is over some subdocument.
|
|
nsEventStateManager* activeESM =
|
|
nsEventStateManager::GetActiveEventStateManager();
|
|
if (activeESM && NS_IS_MOUSE_EVENT(aEvent) &&
|
|
activeESM != shell->GetPresContext()->EventStateManager() &&
|
|
static_cast<nsEventStateManager*>(activeESM)->GetPresContext()) {
|
|
nsIPresShell* activeShell =
|
|
static_cast<nsEventStateManager*>(activeESM)->GetPresContext()->GetPresShell();
|
|
if (activeShell &&
|
|
nsContentUtils::ContentIsCrossDocDescendantOf(activeShell->GetDocument(),
|
|
shell->GetDocument())) {
|
|
shell = static_cast<PresShell*>(activeShell);
|
|
frame = shell->GetRootFrame();
|
|
}
|
|
}
|
|
|
|
if (shell != this) {
|
|
// Handle the event in the correct shell.
|
|
// Prevent deletion until we're done with event handling (bug 336582).
|
|
nsCOMPtr<nsIPresShell> kungFuDeathGrip(shell);
|
|
// We pass the subshell's root frame as the frame to start from. This is
|
|
// the only correct alternative; if the event was captured then it
|
|
// must have been captured by us or some ancestor shell and we
|
|
// now ask the subshell to dispatch it normally.
|
|
return shell->HandlePositionedEvent(frame, aEvent, aEventStatus);
|
|
}
|
|
|
|
return HandlePositionedEvent(frame, aEvent, aEventStatus);
|
|
}
|
|
|
|
nsresult rv = NS_OK;
|
|
|
|
if (frame) {
|
|
PushCurrentEventInfo(nullptr, nullptr);
|
|
|
|
// key and IME related events go to the focused frame in this DOM window.
|
|
if (NS_IsEventTargetedAtFocusedContent(aEvent)) {
|
|
mCurrentEventContent = nullptr;
|
|
|
|
nsCOMPtr<nsPIDOMWindow> window =
|
|
do_QueryInterface(mDocument->GetWindow());
|
|
nsCOMPtr<nsPIDOMWindow> focusedWindow;
|
|
nsCOMPtr<nsIContent> eventTarget =
|
|
nsFocusManager::GetFocusedDescendant(window, false,
|
|
getter_AddRefs(focusedWindow));
|
|
|
|
// otherwise, if there is no focused content or the focused content has
|
|
// no frame, just use the root content. This ensures that key events
|
|
// still get sent to the window properly if nothing is focused or if a
|
|
// frame goes away while it is focused.
|
|
if (!eventTarget || !eventTarget->GetPrimaryFrame()) {
|
|
nsCOMPtr<nsIDOMHTMLDocument> htmlDoc = do_QueryInterface(mDocument);
|
|
if (htmlDoc) {
|
|
nsCOMPtr<nsIDOMHTMLElement> body;
|
|
htmlDoc->GetBody(getter_AddRefs(body));
|
|
eventTarget = do_QueryInterface(body);
|
|
if (!eventTarget) {
|
|
eventTarget = mDocument->GetRootElement();
|
|
}
|
|
} else {
|
|
eventTarget = mDocument->GetRootElement();
|
|
}
|
|
}
|
|
|
|
if (aEvent->message == NS_KEY_DOWN) {
|
|
NS_IF_RELEASE(gKeyDownTarget);
|
|
NS_IF_ADDREF(gKeyDownTarget = eventTarget);
|
|
}
|
|
else if ((aEvent->message == NS_KEY_PRESS || aEvent->message == NS_KEY_UP) &&
|
|
gKeyDownTarget) {
|
|
// If a different element is now focused for the keypress/keyup event
|
|
// than what was focused during the keydown event, check if the new
|
|
// focused element is not in a chrome document any more, and if so,
|
|
// retarget the event back at the keydown target. This prevents a
|
|
// content area from grabbing the focus from chrome in-between key
|
|
// events.
|
|
if (eventTarget &&
|
|
nsContentUtils::IsChromeDoc(gKeyDownTarget->GetCurrentDoc()) !=
|
|
nsContentUtils::IsChromeDoc(eventTarget->GetCurrentDoc())) {
|
|
eventTarget = gKeyDownTarget;
|
|
}
|
|
|
|
if (aEvent->message == NS_KEY_UP) {
|
|
NS_RELEASE(gKeyDownTarget);
|
|
}
|
|
}
|
|
|
|
mCurrentEventFrame = nullptr;
|
|
nsIDocument* targetDoc = eventTarget ? eventTarget->OwnerDoc() : nullptr;
|
|
if (targetDoc && targetDoc != mDocument) {
|
|
PopCurrentEventInfo();
|
|
nsCOMPtr<nsIPresShell> shell = targetDoc->GetShell();
|
|
if (shell) {
|
|
rv = static_cast<PresShell*>(shell.get())->
|
|
HandleRetargetedEvent(aEvent, aEventStatus, eventTarget);
|
|
}
|
|
return rv;
|
|
} else {
|
|
mCurrentEventContent = eventTarget;
|
|
}
|
|
|
|
if (!GetCurrentEventContent() || !GetCurrentEventFrame() ||
|
|
InZombieDocument(mCurrentEventContent)) {
|
|
rv = RetargetEventToParent(aEvent, aEventStatus);
|
|
PopCurrentEventInfo();
|
|
return rv;
|
|
}
|
|
} else {
|
|
mCurrentEventFrame = frame;
|
|
}
|
|
if (GetCurrentEventFrame()) {
|
|
rv = HandleEventInternal(aEvent, aEventStatus);
|
|
}
|
|
|
|
#ifdef DEBUG
|
|
ShowEventTargetDebug();
|
|
#endif
|
|
PopCurrentEventInfo();
|
|
} else {
|
|
// Activation events need to be dispatched even if no frame was found, since
|
|
// we don't want the focus to be out of sync.
|
|
|
|
if (!NS_EVENT_NEEDS_FRAME(aEvent)) {
|
|
mCurrentEventFrame = nullptr;
|
|
return HandleEventInternal(aEvent, aEventStatus);
|
|
}
|
|
else if (NS_IS_KEY_EVENT(aEvent)) {
|
|
// Keypress events in new blank tabs should not be completely thrown away.
|
|
// Retarget them -- the parent chrome shell might make use of them.
|
|
return RetargetEventToParent(aEvent, aEventStatus);
|
|
}
|
|
}
|
|
|
|
return rv;
|
|
}
|
|
|
|
#ifdef ANDROID
|
|
nsIDocument*
|
|
PresShell::GetTouchEventTargetDocument()
|
|
{
|
|
nsPresContext* context = GetPresContext();
|
|
if (!context || !context->IsRoot()) {
|
|
return nullptr;
|
|
}
|
|
|
|
nsCOMPtr<nsISupports> container = context->GetContainer();
|
|
nsCOMPtr<nsIDocShellTreeItem> shellAsTreeItem = do_QueryInterface(container);
|
|
if (!shellAsTreeItem) {
|
|
return nullptr;
|
|
}
|
|
|
|
nsCOMPtr<nsIDocShellTreeOwner> owner;
|
|
shellAsTreeItem->GetTreeOwner(getter_AddRefs(owner));
|
|
if (!owner) {
|
|
return nullptr;
|
|
}
|
|
|
|
// now get the primary content shell (active tab)
|
|
nsCOMPtr<nsIDocShellTreeItem> item;
|
|
owner->GetPrimaryContentShell(getter_AddRefs(item));
|
|
nsCOMPtr<nsIDocShell> childDocShell = do_QueryInterface(item);
|
|
nsCOMPtr<nsIDocument> result = do_GetInterface(childDocShell);
|
|
return result;
|
|
}
|
|
#endif
|
|
|
|
#ifdef DEBUG
|
|
void
|
|
PresShell::ShowEventTargetDebug()
|
|
{
|
|
if (nsFrame::GetShowEventTargetFrameBorder() &&
|
|
GetCurrentEventFrame()) {
|
|
if (mDrawEventTargetFrame) {
|
|
mDrawEventTargetFrame->InvalidateFrame();
|
|
}
|
|
|
|
mDrawEventTargetFrame = mCurrentEventFrame;
|
|
mDrawEventTargetFrame->InvalidateFrame();
|
|
}
|
|
}
|
|
#endif
|
|
|
|
nsresult
|
|
PresShell::HandlePositionedEvent(nsIFrame* aTargetFrame,
|
|
nsGUIEvent* aEvent,
|
|
nsEventStatus* aEventStatus)
|
|
{
|
|
nsresult rv = NS_OK;
|
|
|
|
PushCurrentEventInfo(nullptr, nullptr);
|
|
|
|
mCurrentEventFrame = aTargetFrame;
|
|
|
|
if (mCurrentEventFrame) {
|
|
nsCOMPtr<nsIContent> targetElement;
|
|
mCurrentEventFrame->GetContentForEvent(aEvent,
|
|
getter_AddRefs(targetElement));
|
|
|
|
// If there is no content for this frame, target it anyway. Some
|
|
// frames can be targeted but do not have content, particularly
|
|
// windows with scrolling off.
|
|
if (targetElement) {
|
|
// Bug 103055, bug 185889: mouse events apply to *elements*, not all
|
|
// nodes. Thus we get the nearest element parent here.
|
|
// XXX we leave the frame the same even if we find an element
|
|
// parent, so that the text frame will receive the event (selection
|
|
// and friends are the ones who care about that anyway)
|
|
//
|
|
// We use weak pointers because during this tight loop, the node
|
|
// will *not* go away. And this happens on every mousemove.
|
|
while (targetElement && !targetElement->IsElement()) {
|
|
targetElement = targetElement->GetParent();
|
|
}
|
|
|
|
// If we found an element, target it. Otherwise, target *nothing*.
|
|
if (!targetElement) {
|
|
mCurrentEventContent = nullptr;
|
|
mCurrentEventFrame = nullptr;
|
|
} else if (targetElement != mCurrentEventContent) {
|
|
mCurrentEventContent = targetElement;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (GetCurrentEventFrame()) {
|
|
rv = HandleEventInternal(aEvent, aEventStatus);
|
|
}
|
|
|
|
#ifdef DEBUG
|
|
ShowEventTargetDebug();
|
|
#endif
|
|
PopCurrentEventInfo();
|
|
return rv;
|
|
}
|
|
|
|
nsresult
|
|
PresShell::HandleEventWithTarget(nsEvent* aEvent, nsIFrame* aFrame,
|
|
nsIContent* aContent, nsEventStatus* aStatus)
|
|
{
|
|
#if DEBUG
|
|
MOZ_ASSERT(!aFrame || aFrame->PresContext()->GetPresShell() == this,
|
|
"wrong shell");
|
|
if (aContent) {
|
|
nsIDocument* doc = aContent->GetCurrentDoc();
|
|
NS_ASSERTION(doc, "event for content that isn't in a document");
|
|
NS_ASSERTION(!doc || doc->GetShell() == this, "wrong shell");
|
|
}
|
|
#endif
|
|
NS_ENSURE_STATE(!aContent || aContent->GetCurrentDoc() == mDocument);
|
|
|
|
PushCurrentEventInfo(aFrame, aContent);
|
|
nsresult rv = HandleEventInternal(aEvent, aStatus);
|
|
PopCurrentEventInfo();
|
|
return rv;
|
|
}
|
|
|
|
static bool CanHandleContextMenuEvent(nsMouseEvent* aMouseEvent,
|
|
nsIFrame* aFrame)
|
|
{
|
|
#if defined(XP_MACOSX) && defined(MOZ_XUL)
|
|
nsXULPopupManager* pm = nsXULPopupManager::GetInstance();
|
|
if (pm) {
|
|
nsIFrame* popupFrame = pm->GetTopPopup(ePopupTypeMenu);
|
|
if (popupFrame) {
|
|
// context menus should not be opened while another menu is open on Mac,
|
|
// so return false so that the event is not fired.
|
|
if (aMouseEvent->context == nsMouseEvent::eContextMenuKey) {
|
|
return false;
|
|
} else if (aMouseEvent->widget) {
|
|
nsWindowType windowType;
|
|
aMouseEvent->widget->GetWindowType(windowType);
|
|
if (windowType == eWindowType_popup) {
|
|
for (nsIFrame* current = aFrame; current;
|
|
current = nsLayoutUtils::GetCrossDocParentFrame(current)) {
|
|
if (current->GetType() == nsGkAtoms::menuPopupFrame) {
|
|
return false;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
#endif
|
|
return true;
|
|
}
|
|
|
|
nsresult
|
|
PresShell::HandleEventInternal(nsEvent* aEvent, nsEventStatus* aStatus)
|
|
{
|
|
nsRefPtr<nsEventStateManager> manager = mPresContext->EventStateManager();
|
|
nsresult rv = NS_OK;
|
|
|
|
if (!NS_EVENT_NEEDS_FRAME(aEvent) || GetCurrentEventFrame()) {
|
|
bool touchIsNew = false;
|
|
bool isHandlingUserInput = false;
|
|
|
|
// XXX How about IME events and input events for plugins?
|
|
if (aEvent->mFlags.mIsTrusted) {
|
|
switch (aEvent->message) {
|
|
case NS_KEY_PRESS:
|
|
case NS_KEY_DOWN:
|
|
case NS_KEY_UP: {
|
|
nsIDocument* doc = GetCurrentEventContent() ?
|
|
mCurrentEventContent->OwnerDoc() : nullptr;
|
|
nsIDocument* fullscreenAncestor = nullptr;
|
|
if (static_cast<const nsKeyEvent*>(aEvent)->keyCode == NS_VK_ESCAPE) {
|
|
if ((fullscreenAncestor = nsContentUtils::GetFullscreenAncestor(doc))) {
|
|
// Prevent default action on ESC key press when exiting
|
|
// DOM fullscreen mode. This prevents the browser ESC key
|
|
// handler from stopping all loads in the document, which
|
|
// would cause <video> loads to stop.
|
|
aEvent->mFlags.mDefaultPrevented = true;
|
|
aEvent->mFlags.mOnlyChromeDispatch = true;
|
|
|
|
if (aEvent->message == NS_KEY_UP) {
|
|
// ESC key released while in DOM fullscreen mode.
|
|
// If fullscreen is running in content-only mode, exit the target
|
|
// doctree branch from fullscreen, otherwise fully exit all
|
|
// browser windows and documents from fullscreen mode.
|
|
// Note: in the content-only fullscreen case, we pass the
|
|
// fullscreenAncestor since |doc| may not actually be fullscreen
|
|
// here, and ExitFullscreen() has no affect when passed a
|
|
// non-fullscreen document.
|
|
nsIDocument::ExitFullscreen(
|
|
nsContentUtils::IsFullscreenApiContentOnly() ? fullscreenAncestor : nullptr,
|
|
/* async */ true);
|
|
}
|
|
}
|
|
nsCOMPtr<nsIDocument> pointerLockedDoc =
|
|
do_QueryReferent(nsEventStateManager::sPointerLockedDoc);
|
|
if (pointerLockedDoc) {
|
|
aEvent->mFlags.mDefaultPrevented = true;
|
|
aEvent->mFlags.mOnlyChromeDispatch = true;
|
|
if (aEvent->message == NS_KEY_UP) {
|
|
nsIDocument::UnlockPointer();
|
|
}
|
|
}
|
|
}
|
|
// Else not full-screen mode or key code is unrestricted, fall
|
|
// through to normal handling.
|
|
}
|
|
case NS_MOUSE_BUTTON_DOWN:
|
|
case NS_MOUSE_BUTTON_UP:
|
|
isHandlingUserInput = true;
|
|
break;
|
|
case NS_TOUCH_START: {
|
|
nsTouchEvent* touchEvent = static_cast<nsTouchEvent*>(aEvent);
|
|
// if there is only one touch in this touchstart event, assume that it is
|
|
// the start of a new touch session and evict any old touches in the
|
|
// queue
|
|
if (touchEvent->touches.Length() == 1) {
|
|
nsTArray< nsRefPtr<dom::Touch> > touches;
|
|
gCaptureTouchList.Enumerate(&AppendToTouchList, (void *)&touches);
|
|
for (uint32_t i = 0; i < touches.Length(); ++i) {
|
|
EvictTouchPoint(touches[i]);
|
|
}
|
|
}
|
|
// Add any new touches to the queue
|
|
for (uint32_t i = 0; i < touchEvent->touches.Length(); ++i) {
|
|
dom::Touch* touch = touchEvent->touches[i];
|
|
int32_t id = touch->Identifier();
|
|
if (!gCaptureTouchList.Get(id, nullptr)) {
|
|
// If it is not already in the queue, it is a new touch
|
|
touch->mChanged = true;
|
|
}
|
|
touch->mMessage = aEvent->message;
|
|
gCaptureTouchList.Put(id, touch);
|
|
}
|
|
break;
|
|
}
|
|
case NS_TOUCH_CANCEL:
|
|
case NS_TOUCH_END: {
|
|
// Remove the changed touches
|
|
// need to make sure we only remove touches that are ending here
|
|
nsTouchEvent* touchEvent = static_cast<nsTouchEvent*>(aEvent);
|
|
nsTArray< nsRefPtr<dom::Touch> >& touches = touchEvent->touches;
|
|
for (uint32_t i = 0; i < touches.Length(); ++i) {
|
|
dom::Touch* touch = touches[i];
|
|
if (!touch) {
|
|
continue;
|
|
}
|
|
touch->mMessage = aEvent->message;
|
|
touch->mChanged = true;
|
|
|
|
int32_t id = touch->Identifier();
|
|
nsRefPtr<dom::Touch> oldTouch = gCaptureTouchList.GetWeak(id);
|
|
if (!oldTouch) {
|
|
continue;
|
|
}
|
|
nsCOMPtr<EventTarget> targetPtr = oldTouch->mTarget;
|
|
|
|
mCurrentEventContent = do_QueryInterface(targetPtr);
|
|
touch->SetTarget(targetPtr);
|
|
gCaptureTouchList.Remove(id);
|
|
}
|
|
// add any touches left in the touch list, but ensure changed=false
|
|
gCaptureTouchList.Enumerate(&AppendToTouchList, (void *)&touches);
|
|
break;
|
|
}
|
|
case NS_TOUCH_MOVE: {
|
|
// Check for touches that changed. Mark them add to queue
|
|
nsTouchEvent* touchEvent = static_cast<nsTouchEvent*>(aEvent);
|
|
nsTArray< nsRefPtr<dom::Touch> >& touches = touchEvent->touches;
|
|
bool haveChanged = false;
|
|
for (int32_t i = touches.Length(); i; ) {
|
|
--i;
|
|
dom::Touch* touch = touches[i];
|
|
if (!touch) {
|
|
continue;
|
|
}
|
|
int32_t id = touch->Identifier();
|
|
touch->mMessage = aEvent->message;
|
|
|
|
nsRefPtr<dom::Touch> oldTouch = gCaptureTouchList.GetWeak(id);
|
|
if (!oldTouch) {
|
|
touches.RemoveElementAt(i);
|
|
continue;
|
|
}
|
|
if (touch->Equals(oldTouch)) {
|
|
touch->mChanged = true;
|
|
haveChanged = true;
|
|
}
|
|
|
|
nsCOMPtr<dom::EventTarget> targetPtr = oldTouch->mTarget;
|
|
if (!targetPtr) {
|
|
touches.RemoveElementAt(i);
|
|
continue;
|
|
}
|
|
touch->SetTarget(targetPtr);
|
|
|
|
gCaptureTouchList.Put(id, touch);
|
|
// if we're moving from touchstart to touchmove for this touch
|
|
// we allow preventDefault to prevent mouse events
|
|
if (oldTouch->mMessage != touch->mMessage) {
|
|
touchIsNew = true;
|
|
}
|
|
}
|
|
// is nothing has changed, we should just return
|
|
if (!haveChanged) {
|
|
if (gPreventMouseEvents) {
|
|
*aStatus = nsEventStatus_eConsumeNoDefault;
|
|
}
|
|
return NS_OK;
|
|
}
|
|
break;
|
|
}
|
|
case NS_DRAGDROP_DROP:
|
|
nsCOMPtr<nsIDragSession> session = nsContentUtils::GetDragSession();
|
|
if (session) {
|
|
bool onlyChromeDrop = false;
|
|
session->GetOnlyChromeDrop(&onlyChromeDrop);
|
|
if (onlyChromeDrop) {
|
|
aEvent->mFlags.mOnlyChromeDispatch = true;
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (aEvent->message == NS_CONTEXTMENU) {
|
|
nsMouseEvent* me = static_cast<nsMouseEvent*>(aEvent);
|
|
if (!CanHandleContextMenuEvent(me, GetCurrentEventFrame())) {
|
|
return NS_OK;
|
|
}
|
|
if (me->context == nsMouseEvent::eContextMenuKey &&
|
|
!AdjustContextMenuKeyEvent(me)) {
|
|
return NS_OK;
|
|
}
|
|
if (me->IsShift()) {
|
|
aEvent->mFlags.mOnlyChromeDispatch = true;
|
|
aEvent->mFlags.mRetargetToNonNativeAnonymous = true;
|
|
}
|
|
}
|
|
|
|
nsAutoHandlingUserInputStatePusher userInpStatePusher(isHandlingUserInput,
|
|
aEvent, mDocument);
|
|
|
|
if (aEvent->mFlags.mIsTrusted && aEvent->message == NS_MOUSE_MOVE) {
|
|
nsIPresShell::AllowMouseCapture(
|
|
nsEventStateManager::GetActiveEventStateManager() == manager);
|
|
}
|
|
|
|
nsAutoPopupStatePusher popupStatePusher(nsDOMEvent::GetEventPopupControlState(aEvent));
|
|
|
|
// FIXME. If the event was reused, we need to clear the old target,
|
|
// bug 329430
|
|
aEvent->target = nullptr;
|
|
|
|
// 1. Give event to event manager for pre event state changes and
|
|
// generation of synthetic events.
|
|
rv = manager->PreHandleEvent(mPresContext, aEvent, mCurrentEventFrame, aStatus);
|
|
|
|
// 2. Give event to the DOM for third party and JS use.
|
|
if (NS_SUCCEEDED(rv)) {
|
|
bool wasHandlingKeyBoardEvent =
|
|
nsContentUtils::IsHandlingKeyBoardEvent();
|
|
if (aEvent->eventStructType == NS_KEY_EVENT) {
|
|
nsContentUtils::SetIsHandlingKeyBoardEvent(true);
|
|
}
|
|
if (NS_IsAllowedToDispatchDOMEvent(aEvent)) {
|
|
nsPresShellEventCB eventCB(this);
|
|
if (aEvent->eventStructType == NS_TOUCH_EVENT) {
|
|
DispatchTouchEvent(aEvent, aStatus, &eventCB, touchIsNew);
|
|
} else {
|
|
nsCOMPtr<nsINode> eventTarget = mCurrentEventContent.get();
|
|
nsPresShellEventCB* eventCBPtr = &eventCB;
|
|
if (!eventTarget) {
|
|
nsCOMPtr<nsIContent> targetContent;
|
|
if (mCurrentEventFrame) {
|
|
rv = mCurrentEventFrame->
|
|
GetContentForEvent(aEvent, getter_AddRefs(targetContent));
|
|
}
|
|
if (NS_SUCCEEDED(rv) && targetContent) {
|
|
eventTarget = do_QueryInterface(targetContent);
|
|
} else if (mDocument) {
|
|
eventTarget = do_QueryInterface(mDocument);
|
|
// If we don't have any content, the callback wouldn't probably
|
|
// do nothing.
|
|
eventCBPtr = nullptr;
|
|
}
|
|
}
|
|
if (eventTarget) {
|
|
if (aEvent->eventStructType == NS_COMPOSITION_EVENT ||
|
|
aEvent->eventStructType == NS_TEXT_EVENT) {
|
|
nsIMEStateManager::DispatchCompositionEvent(eventTarget,
|
|
mPresContext, aEvent, aStatus, eventCBPtr);
|
|
} else {
|
|
nsEventDispatcher::Dispatch(eventTarget, mPresContext,
|
|
aEvent, nullptr, aStatus, eventCBPtr);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
nsContentUtils::SetIsHandlingKeyBoardEvent(wasHandlingKeyBoardEvent);
|
|
|
|
// 3. Give event to event manager for post event state changes and
|
|
// generation of synthetic events.
|
|
if (!mIsDestroying && NS_SUCCEEDED(rv)) {
|
|
rv = manager->PostHandleEvent(mPresContext, aEvent,
|
|
GetCurrentEventFrame(), aStatus);
|
|
}
|
|
}
|
|
|
|
if (aEvent->message == NS_MOUSE_BUTTON_UP) {
|
|
// reset the capturing content now that the mouse button is up
|
|
SetCapturingContent(nullptr, 0);
|
|
} else if (aEvent->message == NS_MOUSE_MOVE) {
|
|
nsIPresShell::AllowMouseCapture(false);
|
|
}
|
|
}
|
|
return rv;
|
|
}
|
|
|
|
void
|
|
PresShell::DispatchTouchEvent(nsEvent *aEvent,
|
|
nsEventStatus* aStatus,
|
|
nsPresShellEventCB* aEventCB,
|
|
bool aTouchIsNew)
|
|
{
|
|
// calling preventDefault on touchstart or the first touchmove for a
|
|
// point prevents mouse events
|
|
bool canPrevent = aEvent->message == NS_TOUCH_START ||
|
|
(aEvent->message == NS_TOUCH_MOVE && aTouchIsNew);
|
|
bool preventDefault = false;
|
|
nsEventStatus tmpStatus = nsEventStatus_eIgnore;
|
|
nsTouchEvent* touchEvent = static_cast<nsTouchEvent*>(aEvent);
|
|
|
|
// loop over all touches and dispatch events on any that have changed
|
|
for (uint32_t i = 0; i < touchEvent->touches.Length(); ++i) {
|
|
nsIDOMTouch *touch = touchEvent->touches[i];
|
|
if (!touch || !touch->mChanged) {
|
|
continue;
|
|
}
|
|
|
|
nsCOMPtr<EventTarget> targetPtr = touch->GetTarget();
|
|
nsCOMPtr<nsIContent> content = do_QueryInterface(targetPtr);
|
|
if (!content) {
|
|
continue;
|
|
}
|
|
|
|
nsIDocument* doc = content->OwnerDoc();
|
|
nsIContent* capturingContent = GetCapturingContent();
|
|
if (capturingContent) {
|
|
if (capturingContent->OwnerDoc() != doc) {
|
|
// Wrong document, don't dispatch anything.
|
|
continue;
|
|
}
|
|
content = capturingContent;
|
|
}
|
|
// copy the event
|
|
nsTouchEvent newEvent(touchEvent->mFlags.mIsTrusted, touchEvent);
|
|
newEvent.target = targetPtr;
|
|
|
|
nsRefPtr<PresShell> contentPresShell;
|
|
if (doc == mDocument) {
|
|
contentPresShell = static_cast<PresShell*>(doc->GetShell());
|
|
if (contentPresShell) {
|
|
//XXXsmaug huge hack. Pushing possibly capturing content,
|
|
// even though event target is something else.
|
|
contentPresShell->PushCurrentEventInfo(
|
|
content->GetPrimaryFrame(), content);
|
|
}
|
|
}
|
|
|
|
nsIPresShell *presShell = doc->GetShell();
|
|
if (!presShell) {
|
|
continue;
|
|
}
|
|
|
|
nsPresContext *context = presShell->GetPresContext();
|
|
|
|
tmpStatus = nsEventStatus_eIgnore;
|
|
nsEventDispatcher::Dispatch(targetPtr, context,
|
|
&newEvent, nullptr, &tmpStatus, aEventCB);
|
|
if (nsEventStatus_eConsumeNoDefault == tmpStatus ||
|
|
newEvent.mFlags.mMultipleActionsPrevented) {
|
|
preventDefault = true;
|
|
}
|
|
|
|
if (newEvent.mFlags.mMultipleActionsPrevented) {
|
|
touchEvent->mFlags.mMultipleActionsPrevented = true;
|
|
}
|
|
|
|
if (contentPresShell) {
|
|
contentPresShell->PopCurrentEventInfo();
|
|
}
|
|
}
|
|
|
|
// if preventDefault was called on any of the events dispatched
|
|
// and this is touchstart, or the first touchmove, widget should consume
|
|
// other events that would be associated with this touch session
|
|
if (preventDefault && canPrevent) {
|
|
gPreventMouseEvents = true;
|
|
}
|
|
|
|
if (gPreventMouseEvents) {
|
|
*aStatus = nsEventStatus_eConsumeNoDefault;
|
|
} else {
|
|
*aStatus = nsEventStatus_eIgnore;
|
|
}
|
|
}
|
|
|
|
// Dispatch event to content only (NOT full processing)
|
|
// See also HandleEventWithTarget which does full event processing.
|
|
nsresult
|
|
PresShell::HandleDOMEventWithTarget(nsIContent* aTargetContent, nsEvent* aEvent,
|
|
nsEventStatus* aStatus)
|
|
{
|
|
nsresult rv = NS_OK;
|
|
|
|
PushCurrentEventInfo(nullptr, aTargetContent);
|
|
|
|
// Bug 41013: Check if the event should be dispatched to content.
|
|
// It's possible that we are in the middle of destroying the window
|
|
// and the js context is out of date. This check detects the case
|
|
// that caused a crash in bug 41013, but there may be a better way
|
|
// to handle this situation!
|
|
nsCOMPtr<nsISupports> container = mPresContext->GetContainer();
|
|
if (container) {
|
|
|
|
// Dispatch event to content
|
|
rv = nsEventDispatcher::Dispatch(aTargetContent, mPresContext, aEvent, nullptr,
|
|
aStatus);
|
|
}
|
|
|
|
PopCurrentEventInfo();
|
|
return rv;
|
|
}
|
|
|
|
// See the method above.
|
|
nsresult
|
|
PresShell::HandleDOMEventWithTarget(nsIContent* aTargetContent,
|
|
nsIDOMEvent* aEvent,
|
|
nsEventStatus* aStatus)
|
|
{
|
|
nsresult rv = NS_OK;
|
|
|
|
PushCurrentEventInfo(nullptr, aTargetContent);
|
|
nsCOMPtr<nsISupports> container = mPresContext->GetContainer();
|
|
if (container) {
|
|
rv = nsEventDispatcher::DispatchDOMEvent(aTargetContent, nullptr, aEvent,
|
|
mPresContext, aStatus);
|
|
}
|
|
|
|
PopCurrentEventInfo();
|
|
return rv;
|
|
}
|
|
|
|
bool
|
|
PresShell::AdjustContextMenuKeyEvent(nsMouseEvent* aEvent)
|
|
{
|
|
#ifdef MOZ_XUL
|
|
// if a menu is open, open the context menu relative to the active item on the menu.
|
|
nsXULPopupManager* pm = nsXULPopupManager::GetInstance();
|
|
if (pm) {
|
|
nsIFrame* popupFrame = pm->GetTopPopup(ePopupTypeMenu);
|
|
if (popupFrame) {
|
|
nsIFrame* itemFrame =
|
|
(static_cast<nsMenuPopupFrame *>(popupFrame))->GetCurrentMenuItem();
|
|
if (!itemFrame)
|
|
itemFrame = popupFrame;
|
|
|
|
nsCOMPtr<nsIWidget> widget = popupFrame->GetNearestWidget();
|
|
aEvent->widget = widget;
|
|
nsIntPoint widgetPoint = widget->WidgetToScreenOffset();
|
|
aEvent->refPoint = itemFrame->GetScreenRect().BottomLeft() - widgetPoint;
|
|
|
|
mCurrentEventContent = itemFrame->GetContent();
|
|
mCurrentEventFrame = itemFrame;
|
|
|
|
return true;
|
|
}
|
|
}
|
|
#endif
|
|
|
|
// If we're here because of the key-equiv for showing context menus, we
|
|
// have to twiddle with the NS event to make sure the context menu comes
|
|
// up in the upper left of the relevant content area before we create
|
|
// the DOM event. Since we never call InitMouseEvent() on the event,
|
|
// the client X/Y will be 0,0. We can make use of that if the widget is null.
|
|
// Use the root view manager's widget since it's most likely to have one,
|
|
// and the coordinates returned by GetCurrentItemAndPositionForElement
|
|
// are relative to the widget of the root of the root view manager.
|
|
nsRootPresContext* rootPC = mPresContext->GetRootPresContext();
|
|
aEvent->refPoint.x = 0;
|
|
aEvent->refPoint.y = 0;
|
|
if (rootPC) {
|
|
rootPC->PresShell()->GetViewManager()->
|
|
GetRootWidget(getter_AddRefs(aEvent->widget));
|
|
|
|
if (aEvent->widget) {
|
|
// default the refpoint to the topleft of our document
|
|
nsPoint offset(0, 0);
|
|
nsIFrame* rootFrame = mFrameConstructor->GetRootFrame();
|
|
if (rootFrame) {
|
|
nsView* view = rootFrame->GetClosestView(&offset);
|
|
offset += view->GetOffsetToWidget(aEvent->widget);
|
|
aEvent->refPoint =
|
|
offset.ToNearestPixels(mPresContext->AppUnitsPerDevPixel());
|
|
}
|
|
}
|
|
} else {
|
|
aEvent->widget = nullptr;
|
|
}
|
|
|
|
// see if we should use the caret position for the popup
|
|
nsIntPoint caretPoint;
|
|
// Beware! This may flush notifications via synchronous
|
|
// ScrollSelectionIntoView.
|
|
if (PrepareToUseCaretPosition(aEvent->widget, caretPoint)) {
|
|
// caret position is good
|
|
aEvent->refPoint = caretPoint;
|
|
return true;
|
|
}
|
|
|
|
// If we're here because of the key-equiv for showing context menus, we
|
|
// have to reset the event target to the currently focused element. Get it
|
|
// from the focus controller.
|
|
nsCOMPtr<nsIDOMElement> currentFocus;
|
|
nsIFocusManager* fm = nsFocusManager::GetFocusManager();
|
|
if (fm)
|
|
fm->GetFocusedElement(getter_AddRefs(currentFocus));
|
|
|
|
// Reset event coordinates relative to focused frame in view
|
|
if (currentFocus) {
|
|
nsCOMPtr<nsIContent> currentPointElement;
|
|
GetCurrentItemAndPositionForElement(currentFocus,
|
|
getter_AddRefs(currentPointElement),
|
|
aEvent->refPoint,
|
|
aEvent->widget);
|
|
if (currentPointElement) {
|
|
mCurrentEventContent = currentPointElement;
|
|
mCurrentEventFrame = nullptr;
|
|
GetCurrentEventFrame();
|
|
}
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
// PresShell::PrepareToUseCaretPosition
|
|
//
|
|
// This checks to see if we should use the caret position for popup context
|
|
// menus. Returns true if the caret position should be used, and the
|
|
// coordinates of that position is returned in aTargetPt. This function
|
|
// will also scroll the window as needed to make the caret visible.
|
|
//
|
|
// The event widget should be the widget that generated the event, and
|
|
// whose coordinate system the resulting event's refPoint should be
|
|
// relative to. The returned point is in device pixels realtive to the
|
|
// widget passed in.
|
|
bool
|
|
PresShell::PrepareToUseCaretPosition(nsIWidget* aEventWidget, nsIntPoint& aTargetPt)
|
|
{
|
|
nsresult rv;
|
|
|
|
// check caret visibility
|
|
nsRefPtr<nsCaret> caret = GetCaret();
|
|
NS_ENSURE_TRUE(caret, false);
|
|
|
|
bool caretVisible = false;
|
|
rv = caret->GetCaretVisible(&caretVisible);
|
|
if (NS_FAILED(rv) || ! caretVisible)
|
|
return false;
|
|
|
|
// caret selection, this is a temporary weak reference, so no refcounting is
|
|
// needed
|
|
nsISelection* domSelection = caret->GetCaretDOMSelection();
|
|
NS_ENSURE_TRUE(domSelection, false);
|
|
|
|
// since the match could be an anonymous textnode inside a
|
|
// <textarea> or text <input>, we need to get the outer frame
|
|
// note: frames are not refcounted
|
|
nsIFrame* frame = nullptr; // may be NULL
|
|
nsCOMPtr<nsIDOMNode> node;
|
|
rv = domSelection->GetFocusNode(getter_AddRefs(node));
|
|
NS_ENSURE_SUCCESS(rv, false);
|
|
NS_ENSURE_TRUE(node, false);
|
|
nsCOMPtr<nsIContent> content(do_QueryInterface(node));
|
|
if (content) {
|
|
nsIContent* nonNative = content->FindFirstNonChromeOnlyAccessContent();
|
|
content = nonNative;
|
|
}
|
|
|
|
if (content) {
|
|
// It seems like ScrollSelectionIntoView should be enough, but it's
|
|
// not. The problem is that scrolling the selection into view when it is
|
|
// below the current viewport will align the top line of the frame exactly
|
|
// with the bottom of the window. This is fine, BUT, the popup event causes
|
|
// the control to be re-focused which does this exact call to
|
|
// ScrollContentIntoView, which has a one-pixel disagreement of whether the
|
|
// frame is actually in view. The result is that the frame is aligned with
|
|
// the top of the window, but the menu is still at the bottom.
|
|
//
|
|
// Doing this call first forces the frame to be in view, eliminating the
|
|
// problem. The only difference in the result is that if your cursor is in
|
|
// an edit box below the current view, you'll get the edit box aligned with
|
|
// the top of the window. This is arguably better behavior anyway.
|
|
rv = ScrollContentIntoView(content,
|
|
nsIPresShell::ScrollAxis(
|
|
nsIPresShell::SCROLL_MINIMUM,
|
|
nsIPresShell::SCROLL_IF_NOT_VISIBLE),
|
|
nsIPresShell::ScrollAxis(
|
|
nsIPresShell::SCROLL_MINIMUM,
|
|
nsIPresShell::SCROLL_IF_NOT_VISIBLE),
|
|
nsIPresShell::SCROLL_OVERFLOW_HIDDEN);
|
|
NS_ENSURE_SUCCESS(rv, false);
|
|
frame = content->GetPrimaryFrame();
|
|
NS_WARN_IF_FALSE(frame, "No frame for focused content?");
|
|
}
|
|
|
|
// Actually scroll the selection (ie caret) into view. Note that this must
|
|
// be synchronous since we will be checking the caret position on the screen.
|
|
//
|
|
// Be easy about errors, and just don't scroll in those cases. Better to have
|
|
// the correct menu at a weird place than the wrong menu.
|
|
// After ScrollSelectionIntoView(), the pending notifications might be
|
|
// flushed and PresShell/PresContext/Frames may be dead. See bug 418470.
|
|
nsCOMPtr<nsISelectionController> selCon;
|
|
if (frame)
|
|
frame->GetSelectionController(GetPresContext(), getter_AddRefs(selCon));
|
|
else
|
|
selCon = static_cast<nsISelectionController *>(this);
|
|
if (selCon) {
|
|
rv = selCon->ScrollSelectionIntoView(nsISelectionController::SELECTION_NORMAL,
|
|
nsISelectionController::SELECTION_FOCUS_REGION,
|
|
nsISelectionController::SCROLL_SYNCHRONOUS);
|
|
NS_ENSURE_SUCCESS(rv, false);
|
|
}
|
|
|
|
nsPresContext* presContext = GetPresContext();
|
|
|
|
// get caret position relative to the closest view
|
|
nsRect caretCoords;
|
|
nsIFrame* caretFrame = caret->GetGeometry(domSelection, &caretCoords);
|
|
if (!caretFrame)
|
|
return false;
|
|
nsPoint viewOffset;
|
|
nsView* view = caretFrame->GetClosestView(&viewOffset);
|
|
if (!view)
|
|
return false;
|
|
// and then get the caret coords relative to the event widget
|
|
if (aEventWidget) {
|
|
viewOffset += view->GetOffsetToWidget(aEventWidget);
|
|
}
|
|
caretCoords.MoveBy(viewOffset);
|
|
|
|
// caret coordinates are in app units, convert to pixels
|
|
aTargetPt.x =
|
|
presContext->AppUnitsToDevPixels(caretCoords.x + caretCoords.width);
|
|
aTargetPt.y =
|
|
presContext->AppUnitsToDevPixels(caretCoords.y + caretCoords.height);
|
|
|
|
// make sure rounding doesn't return a pixel which is outside the caret
|
|
// (e.g. one line lower)
|
|
aTargetPt.y -= 1;
|
|
|
|
return true;
|
|
}
|
|
|
|
void
|
|
PresShell::GetCurrentItemAndPositionForElement(nsIDOMElement *aCurrentEl,
|
|
nsIContent** aTargetToUse,
|
|
nsIntPoint& aTargetPt,
|
|
nsIWidget *aRootWidget)
|
|
{
|
|
nsCOMPtr<nsIContent> focusedContent(do_QueryInterface(aCurrentEl));
|
|
ScrollContentIntoView(focusedContent,
|
|
ScrollAxis(),
|
|
ScrollAxis(),
|
|
nsIPresShell::SCROLL_OVERFLOW_HIDDEN);
|
|
|
|
nsPresContext* presContext = GetPresContext();
|
|
|
|
bool istree = false, checkLineHeight = true;
|
|
nscoord extraTreeY = 0;
|
|
|
|
#ifdef MOZ_XUL
|
|
// Set the position to just underneath the current item for multi-select
|
|
// lists or just underneath the selected item for single-select lists. If
|
|
// the element is not a list, or there is no selection, leave the position
|
|
// as is.
|
|
nsCOMPtr<nsIDOMXULSelectControlItemElement> item;
|
|
nsCOMPtr<nsIDOMXULMultiSelectControlElement> multiSelect =
|
|
do_QueryInterface(aCurrentEl);
|
|
if (multiSelect) {
|
|
checkLineHeight = false;
|
|
|
|
int32_t currentIndex;
|
|
multiSelect->GetCurrentIndex(¤tIndex);
|
|
if (currentIndex >= 0) {
|
|
nsCOMPtr<nsIDOMXULElement> xulElement(do_QueryInterface(aCurrentEl));
|
|
if (xulElement) {
|
|
nsCOMPtr<nsIBoxObject> box;
|
|
xulElement->GetBoxObject(getter_AddRefs(box));
|
|
nsCOMPtr<nsITreeBoxObject> treeBox(do_QueryInterface(box));
|
|
// Tree view special case (tree items have no frames)
|
|
// Get the focused row and add its coordinates, which are already in pixels
|
|
// XXX Boris, should we create a new interface so that this doesn't
|
|
// need to know about trees? Something like nsINodelessChildCreator which
|
|
// could provide the current focus coordinates?
|
|
if (treeBox) {
|
|
treeBox->EnsureRowIsVisible(currentIndex);
|
|
int32_t firstVisibleRow, rowHeight;
|
|
treeBox->GetFirstVisibleRow(&firstVisibleRow);
|
|
treeBox->GetRowHeight(&rowHeight);
|
|
|
|
extraTreeY += presContext->CSSPixelsToAppUnits(
|
|
(currentIndex - firstVisibleRow + 1) * rowHeight);
|
|
istree = true;
|
|
|
|
nsCOMPtr<nsITreeColumns> cols;
|
|
treeBox->GetColumns(getter_AddRefs(cols));
|
|
if (cols) {
|
|
nsCOMPtr<nsITreeColumn> col;
|
|
cols->GetFirstColumn(getter_AddRefs(col));
|
|
if (col) {
|
|
nsCOMPtr<nsIDOMElement> colElement;
|
|
col->GetElement(getter_AddRefs(colElement));
|
|
nsCOMPtr<nsIContent> colContent(do_QueryInterface(colElement));
|
|
if (colContent) {
|
|
nsIFrame* frame = colContent->GetPrimaryFrame();
|
|
if (frame) {
|
|
extraTreeY += frame->GetSize().height;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
else {
|
|
multiSelect->GetCurrentItem(getter_AddRefs(item));
|
|
}
|
|
}
|
|
}
|
|
}
|
|
else {
|
|
// don't check menulists as the selected item will be inside a popup.
|
|
nsCOMPtr<nsIDOMXULMenuListElement> menulist = do_QueryInterface(aCurrentEl);
|
|
if (!menulist) {
|
|
nsCOMPtr<nsIDOMXULSelectControlElement> select =
|
|
do_QueryInterface(aCurrentEl);
|
|
if (select) {
|
|
checkLineHeight = false;
|
|
select->GetSelectedItem(getter_AddRefs(item));
|
|
}
|
|
}
|
|
}
|
|
|
|
if (item)
|
|
focusedContent = do_QueryInterface(item);
|
|
#endif
|
|
|
|
nsIFrame *frame = focusedContent->GetPrimaryFrame();
|
|
if (frame) {
|
|
NS_ASSERTION(frame->PresContext() == GetPresContext(),
|
|
"handling event for focused content that is not in our document?");
|
|
|
|
nsPoint frameOrigin(0, 0);
|
|
|
|
// Get the frame's origin within its view
|
|
nsView *view = frame->GetClosestView(&frameOrigin);
|
|
NS_ASSERTION(view, "No view for frame");
|
|
|
|
// View's origin relative the widget
|
|
if (aRootWidget) {
|
|
frameOrigin += view->GetOffsetToWidget(aRootWidget);
|
|
}
|
|
|
|
// Start context menu down and to the right from top left of frame
|
|
// use the lineheight. This is a good distance to move the context
|
|
// menu away from the top left corner of the frame. If we always
|
|
// used the frame height, the context menu could end up far away,
|
|
// for example when we're focused on linked images.
|
|
// On the other hand, we want to use the frame height if it's less
|
|
// than the current line height, so that the context menu appears
|
|
// associated with the correct frame.
|
|
nscoord extra = 0;
|
|
if (!istree) {
|
|
extra = frame->GetSize().height;
|
|
if (checkLineHeight) {
|
|
nsIScrollableFrame *scrollFrame =
|
|
nsLayoutUtils::GetNearestScrollableFrame(frame);
|
|
if (scrollFrame) {
|
|
nsSize scrollAmount = scrollFrame->GetLineScrollAmount();
|
|
nsIFrame* f = do_QueryFrame(scrollFrame);
|
|
int32_t APD = presContext->AppUnitsPerDevPixel();
|
|
int32_t scrollAPD = f->PresContext()->AppUnitsPerDevPixel();
|
|
scrollAmount = scrollAmount.ConvertAppUnits(scrollAPD, APD);
|
|
if (extra > scrollAmount.height) {
|
|
extra = scrollAmount.height;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
aTargetPt.x = presContext->AppUnitsToDevPixels(frameOrigin.x);
|
|
aTargetPt.y = presContext->AppUnitsToDevPixels(
|
|
frameOrigin.y + extra + extraTreeY);
|
|
}
|
|
|
|
NS_IF_ADDREF(*aTargetToUse = focusedContent);
|
|
}
|
|
|
|
bool
|
|
PresShell::ShouldIgnoreInvalidation()
|
|
{
|
|
return mPaintingSuppressed || !mIsActive;
|
|
}
|
|
|
|
void
|
|
PresShell::WillPaint()
|
|
{
|
|
nsRootPresContext* rootPresContext = mPresContext->GetRootPresContext();
|
|
if (!rootPresContext) {
|
|
// In some edge cases, such as when we don't have a root frame yet,
|
|
// we can't find the root prescontext. There's nothing to do in that
|
|
// case.
|
|
return;
|
|
}
|
|
|
|
// Don't bother doing anything if some viewmanager in our tree is painting
|
|
// while we still have painting suppressed or we are not active.
|
|
if (mPaintingSuppressed || !mIsActive || !IsVisible()) {
|
|
return;
|
|
}
|
|
|
|
rootPresContext->FlushWillPaintObservers();
|
|
if (mIsDestroying)
|
|
return;
|
|
|
|
// Process reflows, if we have them, to reduce flicker due to invalidates and
|
|
// reflow being interspersed. Note that we _do_ allow this to be
|
|
// interruptible; if we can't do all the reflows it's better to flicker a bit
|
|
// than to freeze up.
|
|
FlushPendingNotifications(ChangesToFlush(Flush_InterruptibleLayout, false));
|
|
}
|
|
|
|
void
|
|
PresShell::WillPaintWindow()
|
|
{
|
|
nsRootPresContext* rootPresContext = mPresContext->GetRootPresContext();
|
|
if (rootPresContext != mPresContext) {
|
|
// This could be a popup's presshell. We don't allow plugins in popups
|
|
// so there's nothing to do here.
|
|
return;
|
|
}
|
|
|
|
#ifndef XP_MACOSX
|
|
rootPresContext->ApplyPluginGeometryUpdates();
|
|
#endif
|
|
}
|
|
|
|
void
|
|
PresShell::DidPaintWindow()
|
|
{
|
|
nsRootPresContext* rootPresContext = mPresContext->GetRootPresContext();
|
|
if (rootPresContext != mPresContext) {
|
|
// This could be a popup's presshell. No point in notifying XPConnect
|
|
// about compositing of popups.
|
|
return;
|
|
}
|
|
|
|
if (nsContentUtils::XPConnect()) {
|
|
nsContentUtils::XPConnect()->NotifyDidPaint();
|
|
}
|
|
}
|
|
|
|
bool
|
|
PresShell::IsVisible()
|
|
{
|
|
if (!mViewManager)
|
|
return false;
|
|
|
|
nsView* view = mViewManager->GetRootView();
|
|
if (!view)
|
|
return true;
|
|
|
|
// inner view of subdoc frame
|
|
view = view->GetParent();
|
|
if (!view)
|
|
return true;
|
|
|
|
// subdoc view
|
|
view = view->GetParent();
|
|
if (!view)
|
|
return true;
|
|
|
|
nsIFrame* frame = view->GetFrame();
|
|
if (!frame)
|
|
return true;
|
|
|
|
return frame->IsVisibleConsideringAncestors(nsIFrame::VISIBILITY_CROSS_CHROME_CONTENT_BOUNDARY);
|
|
}
|
|
|
|
nsresult
|
|
PresShell::GetAgentStyleSheets(nsCOMArray<nsIStyleSheet>& aSheets)
|
|
{
|
|
aSheets.Clear();
|
|
int32_t sheetCount = mStyleSet->SheetCount(nsStyleSet::eAgentSheet);
|
|
|
|
for (int32_t i = 0; i < sheetCount; ++i) {
|
|
nsIStyleSheet *sheet = mStyleSet->StyleSheetAt(nsStyleSet::eAgentSheet, i);
|
|
if (!aSheets.AppendObject(sheet))
|
|
return NS_ERROR_OUT_OF_MEMORY;
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult
|
|
PresShell::SetAgentStyleSheets(const nsCOMArray<nsIStyleSheet>& aSheets)
|
|
{
|
|
return mStyleSet->ReplaceSheets(nsStyleSet::eAgentSheet, aSheets);
|
|
}
|
|
|
|
nsresult
|
|
PresShell::AddOverrideStyleSheet(nsIStyleSheet *aSheet)
|
|
{
|
|
return mStyleSet->PrependStyleSheet(nsStyleSet::eOverrideSheet, aSheet);
|
|
}
|
|
|
|
nsresult
|
|
PresShell::RemoveOverrideStyleSheet(nsIStyleSheet *aSheet)
|
|
{
|
|
return mStyleSet->RemoveStyleSheet(nsStyleSet::eOverrideSheet, aSheet);
|
|
}
|
|
|
|
static void
|
|
FreezeElement(nsIContent *aContent, void * /* unused */)
|
|
{
|
|
nsCOMPtr<nsIObjectLoadingContent> olc(do_QueryInterface(aContent));
|
|
if (olc) {
|
|
olc->StopPluginInstance();
|
|
}
|
|
}
|
|
|
|
static bool
|
|
FreezeSubDocument(nsIDocument *aDocument, void *aData)
|
|
{
|
|
nsIPresShell *shell = aDocument->GetShell();
|
|
if (shell)
|
|
shell->Freeze();
|
|
|
|
return true;
|
|
}
|
|
|
|
void
|
|
PresShell::Freeze()
|
|
{
|
|
mUpdateImageVisibilityEvent.Revoke();
|
|
|
|
MaybeReleaseCapturingContent();
|
|
|
|
mDocument->EnumerateFreezableElements(FreezeElement, nullptr);
|
|
|
|
if (mCaret) {
|
|
mCaret->SetCaretVisible(false);
|
|
}
|
|
|
|
mPaintingSuppressed = true;
|
|
|
|
if (mDocument) {
|
|
mDocument->EnumerateSubDocuments(FreezeSubDocument, nullptr);
|
|
}
|
|
|
|
nsPresContext* presContext = GetPresContext();
|
|
if (presContext &&
|
|
presContext->RefreshDriver()->PresContext() == presContext) {
|
|
presContext->RefreshDriver()->Freeze();
|
|
}
|
|
|
|
mFrozen = true;
|
|
if (mDocument) {
|
|
UpdateImageLockingState();
|
|
}
|
|
}
|
|
|
|
void
|
|
PresShell::FireOrClearDelayedEvents(bool aFireEvents)
|
|
{
|
|
mNoDelayedMouseEvents = false;
|
|
mNoDelayedKeyEvents = false;
|
|
if (!aFireEvents) {
|
|
mDelayedEvents.Clear();
|
|
return;
|
|
}
|
|
|
|
if (mDocument) {
|
|
nsCOMPtr<nsIDocument> doc = mDocument;
|
|
while (!mIsDestroying && mDelayedEvents.Length() &&
|
|
!doc->EventHandlingSuppressed()) {
|
|
nsAutoPtr<nsDelayedEvent> ev(mDelayedEvents[0].forget());
|
|
mDelayedEvents.RemoveElementAt(0);
|
|
ev->Dispatch(this);
|
|
}
|
|
if (!doc->EventHandlingSuppressed()) {
|
|
mDelayedEvents.Clear();
|
|
}
|
|
}
|
|
}
|
|
|
|
static void
|
|
ThawElement(nsIContent *aContent, void *aShell)
|
|
{
|
|
nsCOMPtr<nsIObjectLoadingContent> olc(do_QueryInterface(aContent));
|
|
if (olc) {
|
|
olc->AsyncStartPluginInstance();
|
|
}
|
|
}
|
|
|
|
static bool
|
|
ThawSubDocument(nsIDocument *aDocument, void *aData)
|
|
{
|
|
nsIPresShell *shell = aDocument->GetShell();
|
|
if (shell)
|
|
shell->Thaw();
|
|
|
|
return true;
|
|
}
|
|
|
|
void
|
|
PresShell::Thaw()
|
|
{
|
|
nsPresContext* presContext = GetPresContext();
|
|
if (presContext &&
|
|
presContext->RefreshDriver()->PresContext() == presContext) {
|
|
presContext->RefreshDriver()->Thaw();
|
|
}
|
|
|
|
mDocument->EnumerateFreezableElements(ThawElement, this);
|
|
|
|
if (mDocument)
|
|
mDocument->EnumerateSubDocuments(ThawSubDocument, nullptr);
|
|
|
|
// Get the activeness of our presshell, as this might have changed
|
|
// while we were in the bfcache
|
|
QueryIsActive();
|
|
|
|
// We're now unfrozen
|
|
mFrozen = false;
|
|
UpdateImageLockingState();
|
|
|
|
UnsuppressPainting();
|
|
}
|
|
|
|
//--------------------------------------------------------
|
|
// Start of protected and private methods on the PresShell
|
|
//--------------------------------------------------------
|
|
|
|
void
|
|
PresShell::MaybeScheduleReflow()
|
|
{
|
|
ASSERT_REFLOW_SCHEDULED_STATE();
|
|
if (mReflowScheduled || mIsDestroying || mIsReflowing ||
|
|
mDirtyRoots.Length() == 0)
|
|
return;
|
|
|
|
if (!mPresContext->HasPendingInterrupt() || !ScheduleReflowOffTimer()) {
|
|
ScheduleReflow();
|
|
}
|
|
|
|
ASSERT_REFLOW_SCHEDULED_STATE();
|
|
}
|
|
|
|
void
|
|
PresShell::ScheduleReflow()
|
|
{
|
|
NS_PRECONDITION(!mReflowScheduled, "Why are we trying to schedule a reflow?");
|
|
ASSERT_REFLOW_SCHEDULED_STATE();
|
|
|
|
if (GetPresContext()->RefreshDriver()->AddLayoutFlushObserver(this)) {
|
|
mReflowScheduled = true;
|
|
}
|
|
|
|
ASSERT_REFLOW_SCHEDULED_STATE();
|
|
}
|
|
|
|
nsresult
|
|
PresShell::DidCauseReflow()
|
|
{
|
|
NS_ASSERTION(mChangeNestCount != 0, "Unexpected call to DidCauseReflow()");
|
|
--mChangeNestCount;
|
|
nsContentUtils::RemoveScriptBlocker();
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
void
|
|
PresShell::WillDoReflow()
|
|
{
|
|
// We just reflowed, tell the caret that its frame might have moved.
|
|
// XXXbz that comment makes no sense
|
|
if (mCaret) {
|
|
mCaret->InvalidateOutsideCaret();
|
|
}
|
|
|
|
mPresContext->FlushUserFontSet();
|
|
|
|
mFrameConstructor->BeginUpdate();
|
|
|
|
mLastReflowStart = GetPerformanceNow();
|
|
}
|
|
|
|
void
|
|
PresShell::DidDoReflow(bool aInterruptible, bool aWasInterrupted)
|
|
{
|
|
mFrameConstructor->EndUpdate();
|
|
|
|
HandlePostedReflowCallbacks(aInterruptible);
|
|
|
|
nsCOMPtr<nsISupports> container = mPresContext->GetContainer();
|
|
if (container) {
|
|
nsCOMPtr<nsIDocShell> docShell = do_QueryInterface(container);
|
|
if (docShell) {
|
|
DOMHighResTimeStamp now = GetPerformanceNow();
|
|
docShell->NotifyReflowObservers(aInterruptible, mLastReflowStart, now);
|
|
}
|
|
}
|
|
|
|
if (sSynthMouseMove) {
|
|
SynthesizeMouseMove(false);
|
|
}
|
|
if (mCaret) {
|
|
// Update the caret's position now to account for any changes created by
|
|
// the reflow.
|
|
mCaret->InvalidateOutsideCaret();
|
|
mCaret->UpdateCaretPosition();
|
|
}
|
|
|
|
if (!aWasInterrupted) {
|
|
ClearReflowOnZoomPending();
|
|
}
|
|
}
|
|
|
|
DOMHighResTimeStamp
|
|
PresShell::GetPerformanceNow()
|
|
{
|
|
DOMHighResTimeStamp now = 0;
|
|
nsPIDOMWindow* window = mDocument->GetInnerWindow();
|
|
|
|
if (window) {
|
|
nsPerformance* perf = window->GetPerformance();
|
|
|
|
if (perf) {
|
|
now = perf->Now();
|
|
}
|
|
}
|
|
|
|
return now;
|
|
}
|
|
|
|
static PLDHashOperator
|
|
MarkFramesDirtyToRoot(nsPtrHashKey<nsIFrame>* p, void* closure)
|
|
{
|
|
nsIFrame* target = static_cast<nsIFrame*>(closure);
|
|
for (nsIFrame* f = p->GetKey(); f && !NS_SUBTREE_DIRTY(f);
|
|
f = f->GetParent()) {
|
|
f->AddStateBits(NS_FRAME_HAS_DIRTY_CHILDREN);
|
|
|
|
if (f == target) {
|
|
break;
|
|
}
|
|
}
|
|
|
|
return PL_DHASH_NEXT;
|
|
}
|
|
|
|
void
|
|
PresShell::sReflowContinueCallback(nsITimer* aTimer, void* aPresShell)
|
|
{
|
|
nsRefPtr<PresShell> self = static_cast<PresShell*>(aPresShell);
|
|
|
|
NS_PRECONDITION(aTimer == self->mReflowContinueTimer, "Unexpected timer");
|
|
self->mReflowContinueTimer = nullptr;
|
|
self->ScheduleReflow();
|
|
}
|
|
|
|
bool
|
|
PresShell::ScheduleReflowOffTimer()
|
|
{
|
|
NS_PRECONDITION(!mReflowScheduled, "Shouldn't get here");
|
|
ASSERT_REFLOW_SCHEDULED_STATE();
|
|
|
|
if (!mReflowContinueTimer) {
|
|
mReflowContinueTimer = do_CreateInstance("@mozilla.org/timer;1");
|
|
if (!mReflowContinueTimer ||
|
|
NS_FAILED(mReflowContinueTimer->
|
|
InitWithFuncCallback(sReflowContinueCallback, this, 30,
|
|
nsITimer::TYPE_ONE_SHOT))) {
|
|
return false;
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
|
|
bool
|
|
PresShell::DoReflow(nsIFrame* target, bool aInterruptible)
|
|
{
|
|
if (mIsZombie) {
|
|
return true;
|
|
}
|
|
|
|
target->SchedulePaint();
|
|
nsIFrame *parent = nsLayoutUtils::GetCrossDocParentFrame(target);
|
|
while (parent) {
|
|
nsSVGEffects::InvalidateDirectRenderingObservers(parent);
|
|
parent = nsLayoutUtils::GetCrossDocParentFrame(parent);
|
|
}
|
|
|
|
nsAutoCString docURL("N/A");
|
|
nsIURI *uri = mDocument->GetDocumentURI();
|
|
if (uri)
|
|
uri->GetSpec(docURL);
|
|
PROFILER_LABEL_PRINTF("layout", "DoReflow", "(%s)", docURL.get());
|
|
|
|
if (mReflowContinueTimer) {
|
|
mReflowContinueTimer->Cancel();
|
|
mReflowContinueTimer = nullptr;
|
|
}
|
|
|
|
nsIFrame* rootFrame = mFrameConstructor->GetRootFrame();
|
|
|
|
nsRefPtr<nsRenderingContext> rcx = GetReferenceRenderingContext();
|
|
if (!rcx) {
|
|
NS_NOTREACHED("CreateRenderingContext failure");
|
|
return false;
|
|
}
|
|
|
|
#ifdef DEBUG
|
|
mCurrentReflowRoot = target;
|
|
#endif
|
|
|
|
target->WillReflow(mPresContext);
|
|
|
|
// If the target frame is the root of the frame hierarchy, then
|
|
// use all the available space. If it's simply a `reflow root',
|
|
// then use the target frame's size as the available space.
|
|
nsSize size;
|
|
if (target == rootFrame) {
|
|
size = mPresContext->GetVisibleArea().Size();
|
|
} else {
|
|
size = target->GetSize();
|
|
}
|
|
|
|
NS_ASSERTION(!target->GetNextInFlow() && !target->GetPrevInFlow(),
|
|
"reflow roots should never split");
|
|
|
|
// Don't pass size directly to the reflow state, since a
|
|
// constrained height implies page/column breaking.
|
|
nsSize reflowSize(size.width, NS_UNCONSTRAINEDSIZE);
|
|
nsHTMLReflowState reflowState(mPresContext, target, rcx, reflowSize);
|
|
|
|
if (rootFrame == target) {
|
|
// When the root frame is being reflowed with unconstrained height
|
|
// (which happens when we're called from
|
|
// nsDocumentViewer::SizeToContent), we're effectively doing a
|
|
// vertical resize, since it changes the meaning of percentage
|
|
// heights even if no heights actually changed. The same applies
|
|
// when we reflow again after that computation. This is an unusual
|
|
// case, and isn't caught by nsHTMLReflowState::InitResizeFlags.
|
|
bool hasUnconstrainedHeight = size.height == NS_UNCONSTRAINEDSIZE;
|
|
|
|
if (hasUnconstrainedHeight || mLastRootReflowHadUnconstrainedHeight) {
|
|
reflowState.mFlags.mVResize = true;
|
|
}
|
|
|
|
mLastRootReflowHadUnconstrainedHeight = hasUnconstrainedHeight;
|
|
}
|
|
|
|
// fix the computed height
|
|
NS_ASSERTION(reflowState.mComputedMargin == nsMargin(0, 0, 0, 0),
|
|
"reflow state should not set margin for reflow roots");
|
|
if (size.height != NS_UNCONSTRAINEDSIZE) {
|
|
nscoord computedHeight =
|
|
size.height - reflowState.mComputedBorderPadding.TopBottom();
|
|
computedHeight = std::max(computedHeight, 0);
|
|
reflowState.SetComputedHeight(computedHeight);
|
|
}
|
|
NS_ASSERTION(reflowState.ComputedWidth() ==
|
|
size.width -
|
|
reflowState.mComputedBorderPadding.LeftRight(),
|
|
"reflow state computed incorrect width");
|
|
|
|
mPresContext->ReflowStarted(aInterruptible);
|
|
mIsReflowing = true;
|
|
|
|
nsReflowStatus status;
|
|
nsHTMLReflowMetrics desiredSize;
|
|
target->Reflow(mPresContext, desiredSize, reflowState, status);
|
|
|
|
// If an incremental reflow is initiated at a frame other than the
|
|
// root frame, then its desired size had better not change! If it's
|
|
// initiated at the root, then the size better not change unless its
|
|
// height was unconstrained to start with.
|
|
nsRect boundsRelativeToTarget = nsRect(0, 0, desiredSize.width, desiredSize.height);
|
|
NS_ASSERTION((target == rootFrame && size.height == NS_UNCONSTRAINEDSIZE) ||
|
|
(desiredSize.width == size.width &&
|
|
desiredSize.height == size.height),
|
|
"non-root frame's desired size changed during an "
|
|
"incremental reflow");
|
|
NS_ASSERTION(target == rootFrame ||
|
|
desiredSize.VisualOverflow().IsEqualInterior(boundsRelativeToTarget),
|
|
"non-root reflow roots must not have visible overflow");
|
|
NS_ASSERTION(target == rootFrame ||
|
|
desiredSize.ScrollableOverflow().IsEqualEdges(boundsRelativeToTarget),
|
|
"non-root reflow roots must not have scrollable overflow");
|
|
NS_ASSERTION(status == NS_FRAME_COMPLETE,
|
|
"reflow roots should never split");
|
|
|
|
target->SetSize(boundsRelativeToTarget.Size());
|
|
|
|
// Always use boundsRelativeToTarget here, not desiredSize.GetVisualOverflowArea(),
|
|
// because for root frames (where they could be different, since root frames
|
|
// are allowed to have overflow) the root view bounds need to match the
|
|
// viewport bounds; the view manager "window dimensions" code depends on it.
|
|
nsContainerFrame::SyncFrameViewAfterReflow(mPresContext, target,
|
|
target->GetView(),
|
|
boundsRelativeToTarget);
|
|
nsContainerFrame::SyncWindowProperties(mPresContext, target,
|
|
target->GetView(), rcx);
|
|
|
|
target->DidReflow(mPresContext, nullptr, nsDidReflowStatus::FINISHED);
|
|
if (target == rootFrame && size.height == NS_UNCONSTRAINEDSIZE) {
|
|
mPresContext->SetVisibleArea(boundsRelativeToTarget);
|
|
}
|
|
|
|
#ifdef DEBUG
|
|
mCurrentReflowRoot = nullptr;
|
|
#endif
|
|
|
|
NS_ASSERTION(mPresContext->HasPendingInterrupt() ||
|
|
mFramesToDirty.Count() == 0,
|
|
"Why do we need to dirty anything if not interrupted?");
|
|
|
|
mIsReflowing = false;
|
|
bool interrupted = mPresContext->HasPendingInterrupt();
|
|
if (interrupted) {
|
|
// Make sure target gets reflowed again.
|
|
mFramesToDirty.EnumerateEntries(&MarkFramesDirtyToRoot, target);
|
|
NS_ASSERTION(NS_SUBTREE_DIRTY(target), "Why is the target not dirty?");
|
|
mDirtyRoots.AppendElement(target);
|
|
mDocument->SetNeedLayoutFlush();
|
|
|
|
// Clear mFramesToDirty after we've done the NS_SUBTREE_DIRTY(target)
|
|
// assertion so that if it fails it's easier to see what's going on.
|
|
#ifdef NOISY_INTERRUPTIBLE_REFLOW
|
|
printf("mFramesToDirty.Count() == %u\n", mFramesToDirty.Count());
|
|
#endif /* NOISY_INTERRUPTIBLE_REFLOW */
|
|
mFramesToDirty.Clear();
|
|
|
|
// Any FlushPendingNotifications with interruptible reflows
|
|
// should be suppressed now. We don't want to do extra reflow work
|
|
// before our reflow event happens.
|
|
mSuppressInterruptibleReflows = true;
|
|
MaybeScheduleReflow();
|
|
}
|
|
|
|
return !interrupted;
|
|
}
|
|
|
|
#ifdef DEBUG
|
|
void
|
|
PresShell::DoVerifyReflow()
|
|
{
|
|
if (GetVerifyReflowEnable()) {
|
|
// First synchronously render what we have so far so that we can
|
|
// see it.
|
|
nsView* rootView = mViewManager->GetRootView();
|
|
mViewManager->InvalidateView(rootView);
|
|
|
|
FlushPendingNotifications(Flush_Layout);
|
|
mInVerifyReflow = true;
|
|
bool ok = VerifyIncrementalReflow();
|
|
mInVerifyReflow = false;
|
|
if (VERIFY_REFLOW_ALL & gVerifyReflowFlags) {
|
|
printf("ProcessReflowCommands: finished (%s)\n",
|
|
ok ? "ok" : "failed");
|
|
}
|
|
|
|
if (!mDirtyRoots.IsEmpty()) {
|
|
printf("XXX yikes! reflow commands queued during verify-reflow\n");
|
|
}
|
|
}
|
|
}
|
|
#endif
|
|
|
|
bool
|
|
PresShell::ProcessReflowCommands(bool aInterruptible)
|
|
{
|
|
if (mDirtyRoots.IsEmpty() && !mShouldUnsuppressPainting) {
|
|
// Nothing to do; bail out
|
|
return true;
|
|
}
|
|
|
|
mozilla::TimeStamp timerStart = mozilla::TimeStamp::Now();
|
|
bool interrupted = false;
|
|
if (!mDirtyRoots.IsEmpty()) {
|
|
|
|
#ifdef DEBUG
|
|
if (VERIFY_REFLOW_DUMP_COMMANDS & gVerifyReflowFlags) {
|
|
printf("ProcessReflowCommands: begin incremental reflow\n");
|
|
}
|
|
#endif
|
|
|
|
// If reflow is interruptible, then make a note of our deadline.
|
|
const PRIntervalTime deadline = aInterruptible
|
|
? PR_IntervalNow() + PR_MicrosecondsToInterval(gMaxRCProcessingTime)
|
|
: (PRIntervalTime)0;
|
|
|
|
// Scope for the reflow entry point
|
|
{
|
|
nsAutoScriptBlocker scriptBlocker;
|
|
WillDoReflow();
|
|
AUTO_LAYOUT_PHASE_ENTRY_POINT(GetPresContext(), Reflow);
|
|
nsViewManager::AutoDisableRefresh refreshBlocker(mViewManager);
|
|
|
|
do {
|
|
// Send an incremental reflow notification to the target frame.
|
|
int32_t idx = mDirtyRoots.Length() - 1;
|
|
nsIFrame *target = mDirtyRoots[idx];
|
|
mDirtyRoots.RemoveElementAt(idx);
|
|
|
|
if (!NS_SUBTREE_DIRTY(target)) {
|
|
// It's not dirty anymore, which probably means the notification
|
|
// was posted in the middle of a reflow (perhaps with a reflow
|
|
// root in the middle). Don't do anything.
|
|
continue;
|
|
}
|
|
|
|
interrupted = !DoReflow(target, aInterruptible);
|
|
|
|
// Keep going until we're out of reflow commands, or we've run
|
|
// past our deadline, or we're interrupted.
|
|
} while (!interrupted && !mDirtyRoots.IsEmpty() &&
|
|
(!aInterruptible || PR_IntervalNow() < deadline));
|
|
|
|
interrupted = !mDirtyRoots.IsEmpty();
|
|
}
|
|
|
|
// Exiting the scriptblocker might have killed us
|
|
if (!mIsDestroying) {
|
|
DidDoReflow(aInterruptible, interrupted);
|
|
}
|
|
|
|
// DidDoReflow might have killed us
|
|
if (!mIsDestroying) {
|
|
#ifdef DEBUG
|
|
if (VERIFY_REFLOW_DUMP_COMMANDS & gVerifyReflowFlags) {
|
|
printf("\nPresShell::ProcessReflowCommands() finished: this=%p\n",
|
|
(void*)this);
|
|
}
|
|
DoVerifyReflow();
|
|
#endif
|
|
|
|
// If any new reflow commands were enqueued during the reflow, schedule
|
|
// another reflow event to process them. Note that we want to do this
|
|
// after DidDoReflow(), since that method can change whether there are
|
|
// dirty roots around by flushing, and there's no point in posting a
|
|
// reflow event just to have the flush revoke it.
|
|
if (!mDirtyRoots.IsEmpty()) {
|
|
MaybeScheduleReflow();
|
|
// And tell our document that we might need flushing
|
|
mDocument->SetNeedLayoutFlush();
|
|
}
|
|
}
|
|
}
|
|
|
|
if (!mIsDestroying && mShouldUnsuppressPainting &&
|
|
mDirtyRoots.IsEmpty()) {
|
|
// We only unlock if we're out of reflows. It's pointless
|
|
// to unlock if reflows are still pending, since reflows
|
|
// are just going to thrash the frames around some more. By
|
|
// waiting we avoid an overeager "jitter" effect.
|
|
mShouldUnsuppressPainting = false;
|
|
UnsuppressAndInvalidate();
|
|
}
|
|
|
|
if (mDocument->GetRootElement()) {
|
|
Telemetry::ID id;
|
|
if (mDocument->GetRootElement()->IsXUL()) {
|
|
id = mIsActive
|
|
? Telemetry::XUL_FOREGROUND_REFLOW_MS
|
|
: Telemetry::XUL_BACKGROUND_REFLOW_MS;
|
|
} else {
|
|
id = mIsActive
|
|
? Telemetry::HTML_FOREGROUND_REFLOW_MS
|
|
: Telemetry::HTML_BACKGROUND_REFLOW_MS;
|
|
}
|
|
Telemetry::AccumulateTimeDelta(id, timerStart);
|
|
}
|
|
|
|
return !interrupted;
|
|
}
|
|
|
|
void
|
|
PresShell::WindowSizeMoveDone()
|
|
{
|
|
if (mPresContext) {
|
|
nsEventStateManager::ClearGlobalActiveContent(nullptr);
|
|
ClearMouseCapture(nullptr);
|
|
}
|
|
}
|
|
|
|
#ifdef MOZ_XUL
|
|
/*
|
|
* It's better to add stuff to the |DidSetStyleContext| method of the
|
|
* relevant frames than adding it here. These methods should (ideally,
|
|
* anyway) go away.
|
|
*/
|
|
|
|
// Return value says whether to walk children.
|
|
typedef bool (* frameWalkerFn)(nsIFrame *aFrame, void *aClosure);
|
|
|
|
static bool
|
|
ReResolveMenusAndTrees(nsIFrame *aFrame, void *aClosure)
|
|
{
|
|
// Trees have a special style cache that needs to be flushed when
|
|
// the theme changes.
|
|
nsTreeBodyFrame *treeBody = do_QueryFrame(aFrame);
|
|
if (treeBody)
|
|
treeBody->ClearStyleAndImageCaches();
|
|
|
|
// We deliberately don't re-resolve style on a menu's popup
|
|
// sub-content, since doing so slows menus to a crawl. That means we
|
|
// have to special-case them on a skin switch, and ensure that the
|
|
// popup frames just get destroyed completely.
|
|
nsMenuFrame* menu = do_QueryFrame(aFrame);
|
|
if (menu)
|
|
menu->CloseMenu(true);
|
|
return true;
|
|
}
|
|
|
|
static bool
|
|
ReframeImageBoxes(nsIFrame *aFrame, void *aClosure)
|
|
{
|
|
nsStyleChangeList *list = static_cast<nsStyleChangeList*>(aClosure);
|
|
if (aFrame->GetType() == nsGkAtoms::imageBoxFrame) {
|
|
list->AppendChange(aFrame, aFrame->GetContent(),
|
|
NS_STYLE_HINT_FRAMECHANGE);
|
|
return false; // don't walk descendants
|
|
}
|
|
return true; // walk descendants
|
|
}
|
|
|
|
static void
|
|
WalkFramesThroughPlaceholders(nsPresContext *aPresContext, nsIFrame *aFrame,
|
|
frameWalkerFn aFunc, void *aClosure)
|
|
{
|
|
bool walkChildren = (*aFunc)(aFrame, aClosure);
|
|
if (!walkChildren)
|
|
return;
|
|
|
|
nsIFrame::ChildListIterator lists(aFrame);
|
|
for (; !lists.IsDone(); lists.Next()) {
|
|
nsFrameList::Enumerator childFrames(lists.CurrentList());
|
|
for (; !childFrames.AtEnd(); childFrames.Next()) {
|
|
nsIFrame* child = childFrames.get();
|
|
if (!(child->GetStateBits() & NS_FRAME_OUT_OF_FLOW)) {
|
|
// only do frames that are in flow, and recur through the
|
|
// out-of-flows of placeholders.
|
|
WalkFramesThroughPlaceholders(aPresContext,
|
|
nsPlaceholderFrame::GetRealFrameFor(child),
|
|
aFunc, aClosure);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
#endif
|
|
|
|
NS_IMETHODIMP
|
|
PresShell::Observe(nsISupports* aSubject,
|
|
const char* aTopic,
|
|
const PRUnichar* aData)
|
|
{
|
|
#ifdef MOZ_XUL
|
|
if (!nsCRT::strcmp(aTopic, "chrome-flush-skin-caches")) {
|
|
nsIFrame *rootFrame = mFrameConstructor->GetRootFrame();
|
|
// Need to null-check because "chrome-flush-skin-caches" can happen
|
|
// at interesting times during startup.
|
|
if (rootFrame) {
|
|
NS_ASSERTION(mViewManager, "View manager must exist");
|
|
|
|
nsWeakFrame weakRoot(rootFrame);
|
|
// Have to make sure that the content notifications are flushed before we
|
|
// start messing with the frame model; otherwise we can get content doubling.
|
|
mDocument->FlushPendingNotifications(Flush_ContentAndNotify);
|
|
|
|
if (weakRoot.IsAlive()) {
|
|
WalkFramesThroughPlaceholders(mPresContext, rootFrame,
|
|
&ReResolveMenusAndTrees, nullptr);
|
|
|
|
// Because "chrome:" URL equality is messy, reframe image box
|
|
// frames (hack!).
|
|
nsStyleChangeList changeList;
|
|
WalkFramesThroughPlaceholders(mPresContext, rootFrame,
|
|
ReframeImageBoxes, &changeList);
|
|
// Mark ourselves as not safe to flush while we're doing frame
|
|
// construction.
|
|
{
|
|
nsAutoScriptBlocker scriptBlocker;
|
|
++mChangeNestCount;
|
|
RestyleManager* restyleManager = mPresContext->RestyleManager();
|
|
restyleManager->ProcessRestyledFrames(changeList);
|
|
restyleManager->FlushOverflowChangedTracker();
|
|
--mChangeNestCount;
|
|
}
|
|
}
|
|
}
|
|
return NS_OK;
|
|
}
|
|
#endif
|
|
|
|
if (!nsCRT::strcmp(aTopic, "agent-sheet-added") && mStyleSet) {
|
|
AddAgentSheet(aSubject);
|
|
return NS_OK;
|
|
}
|
|
|
|
if (!nsCRT::strcmp(aTopic, "user-sheet-added") && mStyleSet) {
|
|
AddUserSheet(aSubject);
|
|
return NS_OK;
|
|
}
|
|
|
|
if (!nsCRT::strcmp(aTopic, "author-sheet-added") && mStyleSet) {
|
|
AddAuthorSheet(aSubject);
|
|
return NS_OK;
|
|
}
|
|
|
|
if (!nsCRT::strcmp(aTopic, "agent-sheet-removed") && mStyleSet) {
|
|
RemoveSheet(nsStyleSet::eAgentSheet, aSubject);
|
|
return NS_OK;
|
|
}
|
|
|
|
if (!nsCRT::strcmp(aTopic, "user-sheet-removed") && mStyleSet) {
|
|
RemoveSheet(nsStyleSet::eUserSheet, aSubject);
|
|
return NS_OK;
|
|
}
|
|
|
|
if (!nsCRT::strcmp(aTopic, "author-sheet-removed") && mStyleSet) {
|
|
RemoveSheet(nsStyleSet::eDocSheet, aSubject);
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_WARNING("unrecognized topic in PresShell::Observe");
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
bool
|
|
nsIPresShell::AddRefreshObserverInternal(nsARefreshObserver* aObserver,
|
|
mozFlushType aFlushType)
|
|
{
|
|
nsPresContext* presContext = GetPresContext();
|
|
return presContext ? presContext->RefreshDriver()->
|
|
AddRefreshObserver(aObserver, aFlushType) : false;
|
|
}
|
|
|
|
/* virtual */ bool
|
|
nsIPresShell::AddRefreshObserverExternal(nsARefreshObserver* aObserver,
|
|
mozFlushType aFlushType)
|
|
{
|
|
return AddRefreshObserverInternal(aObserver, aFlushType);
|
|
}
|
|
|
|
bool
|
|
nsIPresShell::RemoveRefreshObserverInternal(nsARefreshObserver* aObserver,
|
|
mozFlushType aFlushType)
|
|
{
|
|
nsPresContext* presContext = GetPresContext();
|
|
return presContext ? presContext->RefreshDriver()->
|
|
RemoveRefreshObserver(aObserver, aFlushType) : false;
|
|
}
|
|
|
|
/* virtual */ bool
|
|
nsIPresShell::RemoveRefreshObserverExternal(nsARefreshObserver* aObserver,
|
|
mozFlushType aFlushType)
|
|
{
|
|
return RemoveRefreshObserverInternal(aObserver, aFlushType);
|
|
}
|
|
|
|
//------------------------------------------------------
|
|
// End of protected and private methods on the PresShell
|
|
//------------------------------------------------------
|
|
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// Start of DEBUG only code
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#ifdef DEBUG
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#include "nsIURL.h"
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#include "nsILinkHandler.h"
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static void
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LogVerifyMessage(nsIFrame* k1, nsIFrame* k2, const char* aMsg)
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{
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nsAutoString n1, n2;
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if (k1) {
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k1->GetFrameName(n1);
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} else {
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n1.Assign(NS_LITERAL_STRING("(null)"));
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}
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if (k2) {
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k2->GetFrameName(n2);
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} else {
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n2.Assign(NS_LITERAL_STRING("(null)"));
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}
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printf("verifyreflow: %s %p != %s %p %s\n",
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NS_LossyConvertUTF16toASCII(n1).get(), (void*)k1,
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NS_LossyConvertUTF16toASCII(n2).get(), (void*)k2, aMsg);
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}
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static void
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LogVerifyMessage(nsIFrame* k1, nsIFrame* k2, const char* aMsg,
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const nsRect& r1, const nsRect& r2)
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{
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printf("VerifyReflow Error:\n");
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nsAutoString name;
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if (k1) {
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k1->GetFrameName(name);
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printf(" %s %p ", NS_LossyConvertUTF16toASCII(name).get(), (void*)k1);
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}
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printf("{%d, %d, %d, %d} != \n", r1.x, r1.y, r1.width, r1.height);
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if (k2) {
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k2->GetFrameName(name);
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printf(" %s %p ", NS_LossyConvertUTF16toASCII(name).get(), (void*)k2);
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}
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printf("{%d, %d, %d, %d}\n %s\n",
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r2.x, r2.y, r2.width, r2.height, aMsg);
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}
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static void
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LogVerifyMessage(nsIFrame* k1, nsIFrame* k2, const char* aMsg,
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const nsIntRect& r1, const nsIntRect& r2)
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{
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printf("VerifyReflow Error:\n");
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nsAutoString name;
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if (k1) {
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k1->GetFrameName(name);
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printf(" %s %p ", NS_LossyConvertUTF16toASCII(name).get(), (void*)k1);
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}
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printf("{%d, %d, %d, %d} != \n", r1.x, r1.y, r1.width, r1.height);
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if (k2) {
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k2->GetFrameName(name);
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printf(" %s %p ", NS_LossyConvertUTF16toASCII(name).get(), (void*)k2);
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}
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printf("{%d, %d, %d, %d}\n %s\n",
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r2.x, r2.y, r2.width, r2.height, aMsg);
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}
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static bool
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CompareTrees(nsPresContext* aFirstPresContext, nsIFrame* aFirstFrame,
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nsPresContext* aSecondPresContext, nsIFrame* aSecondFrame)
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{
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if (!aFirstPresContext || !aFirstFrame || !aSecondPresContext || !aSecondFrame)
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return true;
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// XXX Evil hack to reduce false positives; I can't seem to figure
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// out how to flush scrollbar changes correctly
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//if (aFirstFrame->GetType() == nsGkAtoms::scrollbarFrame)
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// return true;
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bool ok = true;
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nsIFrame::ChildListIterator lists1(aFirstFrame);
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nsIFrame::ChildListIterator lists2(aSecondFrame);
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do {
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const nsFrameList& kids1 = !lists1.IsDone() ? lists1.CurrentList() : nsFrameList();
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const nsFrameList& kids2 = !lists2.IsDone() ? lists2.CurrentList() : nsFrameList();
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int32_t l1 = kids1.GetLength();
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int32_t l2 = kids2.GetLength();;
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if (l1 != l2) {
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ok = false;
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LogVerifyMessage(kids1.FirstChild(), kids2.FirstChild(),
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"child counts don't match: ");
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printf("%d != %d\n", l1, l2);
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if (0 == (VERIFY_REFLOW_ALL & gVerifyReflowFlags)) {
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break;
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}
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}
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nsIntRect r1, r2;
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nsView* v1, *v2;
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for (nsFrameList::Enumerator e1(kids1), e2(kids2);
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;
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e1.Next(), e2.Next()) {
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nsIFrame* k1 = e1.get();
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nsIFrame* k2 = e2.get();
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if (((nullptr == k1) && (nullptr != k2)) ||
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((nullptr != k1) && (nullptr == k2))) {
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ok = false;
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LogVerifyMessage(k1, k2, "child lists are different\n");
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break;
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}
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else if (nullptr != k1) {
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// Verify that the frames are the same size
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if (!k1->GetRect().IsEqualInterior(k2->GetRect())) {
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ok = false;
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LogVerifyMessage(k1, k2, "(frame rects)", k1->GetRect(), k2->GetRect());
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}
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// Make sure either both have views or neither have views; if they
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// do have views, make sure the views are the same size. If the
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// views have widgets, make sure they both do or neither does. If
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// they do, make sure the widgets are the same size.
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v1 = k1->GetView();
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v2 = k2->GetView();
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if (((nullptr == v1) && (nullptr != v2)) ||
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((nullptr != v1) && (nullptr == v2))) {
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ok = false;
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LogVerifyMessage(k1, k2, "child views are not matched\n");
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}
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else if (nullptr != v1) {
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if (!v1->GetBounds().IsEqualInterior(v2->GetBounds())) {
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LogVerifyMessage(k1, k2, "(view rects)", v1->GetBounds(), v2->GetBounds());
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}
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nsIWidget* w1 = v1->GetWidget();
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nsIWidget* w2 = v2->GetWidget();
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if (((nullptr == w1) && (nullptr != w2)) ||
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((nullptr != w1) && (nullptr == w2))) {
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ok = false;
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LogVerifyMessage(k1, k2, "child widgets are not matched\n");
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}
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else if (nullptr != w1) {
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w1->GetBounds(r1);
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w2->GetBounds(r2);
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if (!r1.IsEqualEdges(r2)) {
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LogVerifyMessage(k1, k2, "(widget rects)", r1, r2);
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}
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}
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}
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if (!ok && (0 == (VERIFY_REFLOW_ALL & gVerifyReflowFlags))) {
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break;
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}
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// XXX Should perhaps compare their float managers.
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// Compare the sub-trees too
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if (!CompareTrees(aFirstPresContext, k1, aSecondPresContext, k2)) {
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ok = false;
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if (0 == (VERIFY_REFLOW_ALL & gVerifyReflowFlags)) {
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break;
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}
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}
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}
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else {
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break;
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}
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}
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if (!ok && (0 == (VERIFY_REFLOW_ALL & gVerifyReflowFlags))) {
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break;
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}
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lists1.Next();
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lists2.Next();
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if (lists1.IsDone() != lists2.IsDone() ||
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(!lists1.IsDone() && lists1.CurrentID() != lists2.CurrentID())) {
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if (0 == (VERIFY_REFLOW_ALL & gVerifyReflowFlags)) {
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ok = false;
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}
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LogVerifyMessage(kids1.FirstChild(), kids2.FirstChild(),
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"child list names are not matched: ");
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fprintf(stdout, "%s != %s\n",
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!lists1.IsDone() ? mozilla::layout::ChildListName(lists1.CurrentID()) : "(null)",
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!lists2.IsDone() ? mozilla::layout::ChildListName(lists2.CurrentID()) : "(null)");
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break;
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}
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} while (ok && !lists1.IsDone());
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return ok;
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}
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#endif
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#if 0
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static nsIFrame*
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FindTopFrame(nsIFrame* aRoot)
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{
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if (aRoot) {
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nsIContent* content = aRoot->GetContent();
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if (content) {
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nsIAtom* tag;
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content->GetTag(tag);
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if (nullptr != tag) {
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NS_RELEASE(tag);
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return aRoot;
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}
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}
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// Try one of the children
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nsIFrame* kid = aRoot->GetFirstPrincipalChild();
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while (nullptr != kid) {
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nsIFrame* result = FindTopFrame(kid);
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if (nullptr != result) {
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return result;
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}
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kid = kid->GetNextSibling();
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}
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}
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return nullptr;
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}
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#endif
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#ifdef DEBUG
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nsStyleSet*
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PresShell::CloneStyleSet(nsStyleSet* aSet)
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{
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nsStyleSet *clone = new nsStyleSet();
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int32_t i, n = aSet->SheetCount(nsStyleSet::eOverrideSheet);
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for (i = 0; i < n; i++) {
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nsIStyleSheet* ss = aSet->StyleSheetAt(nsStyleSet::eOverrideSheet, i);
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if (ss)
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clone->AppendStyleSheet(nsStyleSet::eOverrideSheet, ss);
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}
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// The document expects to insert document stylesheets itself
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#if 0
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n = aSet->SheetCount(nsStyleSet::eDocSheet);
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for (i = 0; i < n; i++) {
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nsIStyleSheet* ss = aSet->StyleSheetAt(nsStyleSet::eDocSheet, i);
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if (ss)
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clone->AddDocStyleSheet(ss, mDocument);
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}
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#endif
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n = aSet->SheetCount(nsStyleSet::eUserSheet);
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for (i = 0; i < n; i++) {
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nsIStyleSheet* ss = aSet->StyleSheetAt(nsStyleSet::eUserSheet, i);
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if (ss)
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clone->AppendStyleSheet(nsStyleSet::eUserSheet, ss);
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}
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n = aSet->SheetCount(nsStyleSet::eAgentSheet);
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for (i = 0; i < n; i++) {
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nsIStyleSheet* ss = aSet->StyleSheetAt(nsStyleSet::eAgentSheet, i);
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if (ss)
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clone->AppendStyleSheet(nsStyleSet::eAgentSheet, ss);
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}
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return clone;
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}
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#ifdef DEBUG_Eli
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static nsresult
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DumpToPNG(nsIPresShell* shell, nsAString& name) {
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int32_t width=1000, height=1000;
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nsRect r(0, 0, shell->GetPresContext()->DevPixelsToAppUnits(width),
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shell->GetPresContext()->DevPixelsToAppUnits(height));
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nsRefPtr<gfxImageSurface> imgSurface =
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new gfxImageSurface(gfxIntSize(width, height),
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gfxImageSurface::ImageFormatARGB32);
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nsRefPtr<gfxContext> imgContext = new gfxContext(imgSurface);
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nsRefPtr<gfxASurface> surface =
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gfxPlatform::GetPlatform()->
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CreateOffscreenSurface(gfxIntSize(width, height),
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gfxASurface::ContentFromFormat(gfxASurface::ImageFormatARGB32));
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NS_ENSURE_TRUE(surface, NS_ERROR_OUT_OF_MEMORY);
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nsRefPtr<gfxContext> context = new gfxContext(surface);
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shell->RenderDocument(r, 0, NS_RGB(255, 255, 0), context);
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imgContext->DrawSurface(surface, gfxSize(width, height));
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nsCOMPtr<imgIEncoder> encoder = do_CreateInstance("@mozilla.org/image/encoder;2?type=image/png");
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NS_ENSURE_TRUE(encoder, NS_ERROR_FAILURE);
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encoder->InitFromData(imgSurface->Data(), imgSurface->Stride() * height,
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width, height, imgSurface->Stride(),
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imgIEncoder::INPUT_FORMAT_HOSTARGB, EmptyString());
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// XXX not sure if this is the right way to write to a file
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nsCOMPtr<nsIFile> file = do_CreateInstance("@mozilla.org/file/local;1");
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NS_ENSURE_TRUE(file, NS_ERROR_FAILURE);
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rv = file->InitWithPath(name);
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NS_ENSURE_SUCCESS(rv, rv);
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uint64_t length64;
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rv = encoder->Available(&length64);
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NS_ENSURE_SUCCESS(rv, rv);
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if (length64 > UINT32_MAX)
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return NS_ERROR_FILE_TOO_BIG;
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uint32_t length = (uint32_t)length64;
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nsCOMPtr<nsIOutputStream> outputStream;
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rv = NS_NewLocalFileOutputStream(getter_AddRefs(outputStream), file);
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NS_ENSURE_SUCCESS(rv, rv);
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nsCOMPtr<nsIOutputStream> bufferedOutputStream;
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rv = NS_NewBufferedOutputStream(getter_AddRefs(bufferedOutputStream),
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outputStream, length);
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NS_ENSURE_SUCCESS(rv, rv);
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uint32_t numWritten;
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rv = bufferedOutputStream->WriteFrom(encoder, length, &numWritten);
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NS_ENSURE_SUCCESS(rv, rv);
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return NS_OK;
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}
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#endif
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// After an incremental reflow, we verify the correctness by doing a
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// full reflow into a fresh frame tree.
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bool
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PresShell::VerifyIncrementalReflow()
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{
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if (VERIFY_REFLOW_NOISY & gVerifyReflowFlags) {
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printf("Building Verification Tree...\n");
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}
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// Create a presentation context to view the new frame tree
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nsRefPtr<nsPresContext> cx =
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new nsRootPresContext(mDocument, mPresContext->IsPaginated() ?
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nsPresContext::eContext_PrintPreview :
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nsPresContext::eContext_Galley);
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NS_ENSURE_TRUE(cx, false);
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nsDeviceContext *dc = mPresContext->DeviceContext();
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nsresult rv = cx->Init(dc);
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NS_ENSURE_SUCCESS(rv, false);
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// Get our scrolling preference
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nsView* rootView = mViewManager->GetRootView();
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NS_ENSURE_TRUE(rootView->HasWidget(), false);
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nsIWidget* parentWidget = rootView->GetWidget();
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// Create a new view manager.
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nsRefPtr<nsViewManager> vm = new nsViewManager();
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NS_ENSURE_TRUE(vm, false);
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rv = vm->Init(dc);
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NS_ENSURE_SUCCESS(rv, false);
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// Create a child window of the parent that is our "root view/window"
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// Create a view
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nsRect tbounds = mPresContext->GetVisibleArea();
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nsView* view = vm->CreateView(tbounds, nullptr);
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NS_ENSURE_TRUE(view, false);
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//now create the widget for the view
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rv = view->CreateWidgetForParent(parentWidget, nullptr, true);
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NS_ENSURE_SUCCESS(rv, false);
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// Setup hierarchical relationship in view manager
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vm->SetRootView(view);
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// Make the new presentation context the same size as our
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// presentation context.
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nsRect r = mPresContext->GetVisibleArea();
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cx->SetVisibleArea(r);
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// Create a new presentation shell to view the document. Use the
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// exact same style information that this document has.
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nsAutoPtr<nsStyleSet> newSet(CloneStyleSet(mStyleSet));
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nsCOMPtr<nsIPresShell> sh = mDocument->CreateShell(cx, vm, newSet);
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NS_ENSURE_TRUE(sh, false);
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newSet.forget();
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// Note that after we create the shell, we must make sure to destroy it
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sh->SetVerifyReflowEnable(false); // turn off verify reflow while we're reflowing the test frame tree
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vm->SetPresShell(sh);
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{
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nsAutoCauseReflowNotifier crNotifier(this);
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sh->Initialize(r.width, r.height);
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}
|
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mDocument->BindingManager()->ProcessAttachedQueue();
|
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sh->FlushPendingNotifications(Flush_Layout);
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sh->SetVerifyReflowEnable(true); // turn on verify reflow again now that we're done reflowing the test frame tree
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// Force the non-primary presshell to unsuppress; it doesn't want to normally
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// because it thinks it's hidden
|
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((PresShell*)sh.get())->mPaintingSuppressed = false;
|
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if (VERIFY_REFLOW_NOISY & gVerifyReflowFlags) {
|
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printf("Verification Tree built, comparing...\n");
|
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}
|
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|
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// Now that the document has been reflowed, use its frame tree to
|
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// compare against our frame tree.
|
|
nsIFrame* root1 = mFrameConstructor->GetRootFrame();
|
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nsIFrame* root2 = sh->GetRootFrame();
|
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bool ok = CompareTrees(mPresContext, root1, cx, root2);
|
|
if (!ok && (VERIFY_REFLOW_NOISY & gVerifyReflowFlags)) {
|
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printf("Verify reflow failed, primary tree:\n");
|
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root1->List(stdout, 0);
|
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printf("Verification tree:\n");
|
|
root2->List(stdout, 0);
|
|
}
|
|
|
|
#ifdef DEBUG_Eli
|
|
// Sample code for dumping page to png
|
|
// XXX Needs to be made more flexible
|
|
if (!ok) {
|
|
nsString stra;
|
|
static int num = 0;
|
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stra.AppendLiteral("C:\\mozilla\\mozilla\\debug\\filea");
|
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stra.AppendInt(num);
|
|
stra.AppendLiteral(".png");
|
|
DumpToPNG(sh, stra);
|
|
nsString strb;
|
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strb.AppendLiteral("C:\\mozilla\\mozilla\\debug\\fileb");
|
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strb.AppendInt(num);
|
|
strb.AppendLiteral(".png");
|
|
DumpToPNG(this, strb);
|
|
++num;
|
|
}
|
|
#endif
|
|
|
|
sh->EndObservingDocument();
|
|
sh->Destroy();
|
|
if (VERIFY_REFLOW_NOISY & gVerifyReflowFlags) {
|
|
printf("Finished Verifying Reflow...\n");
|
|
}
|
|
|
|
return ok;
|
|
}
|
|
|
|
// Layout debugging hooks
|
|
void
|
|
PresShell::ListStyleContexts(nsIFrame *aRootFrame, FILE *out, int32_t aIndent)
|
|
{
|
|
nsStyleContext *sc = aRootFrame->StyleContext();
|
|
if (sc)
|
|
sc->List(out, aIndent);
|
|
}
|
|
|
|
void
|
|
PresShell::ListStyleSheets(FILE *out, int32_t aIndent)
|
|
{
|
|
int32_t sheetCount = mStyleSet->SheetCount(nsStyleSet::eDocSheet);
|
|
for (int32_t i = 0; i < sheetCount; ++i) {
|
|
mStyleSet->StyleSheetAt(nsStyleSet::eDocSheet, i)->List(out, aIndent);
|
|
fputs("\n", out);
|
|
}
|
|
}
|
|
|
|
void
|
|
PresShell::VerifyStyleTree()
|
|
{
|
|
VERIFY_STYLE_TREE;
|
|
}
|
|
#endif
|
|
|
|
//=============================================================
|
|
//=============================================================
|
|
//-- Debug Reflow Counts
|
|
//=============================================================
|
|
//=============================================================
|
|
#ifdef MOZ_REFLOW_PERF
|
|
//-------------------------------------------------------------
|
|
void
|
|
PresShell::DumpReflows()
|
|
{
|
|
if (mReflowCountMgr) {
|
|
nsAutoCString uriStr;
|
|
if (mDocument) {
|
|
nsIURI *uri = mDocument->GetDocumentURI();
|
|
if (uri) {
|
|
uri->GetPath(uriStr);
|
|
}
|
|
}
|
|
mReflowCountMgr->DisplayTotals(uriStr.get());
|
|
mReflowCountMgr->DisplayHTMLTotals(uriStr.get());
|
|
mReflowCountMgr->DisplayDiffsInTotals("Differences");
|
|
}
|
|
}
|
|
|
|
//-------------------------------------------------------------
|
|
void
|
|
PresShell::CountReflows(const char * aName, nsIFrame * aFrame)
|
|
{
|
|
if (mReflowCountMgr) {
|
|
mReflowCountMgr->Add(aName, aFrame);
|
|
}
|
|
}
|
|
|
|
//-------------------------------------------------------------
|
|
void
|
|
PresShell::PaintCount(const char * aName,
|
|
nsRenderingContext* aRenderingContext,
|
|
nsPresContext* aPresContext,
|
|
nsIFrame * aFrame,
|
|
const nsPoint& aOffset,
|
|
uint32_t aColor)
|
|
{
|
|
if (mReflowCountMgr) {
|
|
mReflowCountMgr->PaintCount(aName, aRenderingContext, aPresContext,
|
|
aFrame, aOffset, aColor);
|
|
}
|
|
}
|
|
|
|
//-------------------------------------------------------------
|
|
void
|
|
PresShell::SetPaintFrameCount(bool aPaintFrameCounts)
|
|
{
|
|
if (mReflowCountMgr) {
|
|
mReflowCountMgr->SetPaintFrameCounts(aPaintFrameCounts);
|
|
}
|
|
}
|
|
|
|
bool
|
|
PresShell::IsPaintingFrameCounts()
|
|
{
|
|
if (mReflowCountMgr)
|
|
return mReflowCountMgr->IsPaintingFrameCounts();
|
|
return false;
|
|
}
|
|
|
|
//------------------------------------------------------------------
|
|
//-- Reflow Counter Classes Impls
|
|
//------------------------------------------------------------------
|
|
|
|
//------------------------------------------------------------------
|
|
ReflowCounter::ReflowCounter(ReflowCountMgr * aMgr) :
|
|
mMgr(aMgr)
|
|
{
|
|
ClearTotals();
|
|
SetTotalsCache();
|
|
}
|
|
|
|
//------------------------------------------------------------------
|
|
ReflowCounter::~ReflowCounter()
|
|
{
|
|
|
|
}
|
|
|
|
//------------------------------------------------------------------
|
|
void ReflowCounter::ClearTotals()
|
|
{
|
|
mTotal = 0;
|
|
}
|
|
|
|
//------------------------------------------------------------------
|
|
void ReflowCounter::SetTotalsCache()
|
|
{
|
|
mCacheTotal = mTotal;
|
|
}
|
|
|
|
//------------------------------------------------------------------
|
|
void ReflowCounter::CalcDiffInTotals()
|
|
{
|
|
mCacheTotal = mTotal - mCacheTotal;
|
|
}
|
|
|
|
//------------------------------------------------------------------
|
|
void ReflowCounter::DisplayTotals(const char * aStr)
|
|
{
|
|
DisplayTotals(mTotal, aStr?aStr:"Totals");
|
|
}
|
|
|
|
//------------------------------------------------------------------
|
|
void ReflowCounter::DisplayDiffTotals(const char * aStr)
|
|
{
|
|
DisplayTotals(mCacheTotal, aStr?aStr:"Diff Totals");
|
|
}
|
|
|
|
//------------------------------------------------------------------
|
|
void ReflowCounter::DisplayHTMLTotals(const char * aStr)
|
|
{
|
|
DisplayHTMLTotals(mTotal, aStr?aStr:"Totals");
|
|
}
|
|
|
|
//------------------------------------------------------------------
|
|
void ReflowCounter::DisplayTotals(uint32_t aTotal, const char * aTitle)
|
|
{
|
|
// figure total
|
|
if (aTotal == 0) {
|
|
return;
|
|
}
|
|
ReflowCounter * gTots = (ReflowCounter *)mMgr->LookUp(kGrandTotalsStr);
|
|
|
|
printf("%25s\t", aTitle);
|
|
printf("%d\t", aTotal);
|
|
if (gTots != this && aTotal > 0) {
|
|
gTots->Add(aTotal);
|
|
}
|
|
}
|
|
|
|
//------------------------------------------------------------------
|
|
void ReflowCounter::DisplayHTMLTotals(uint32_t aTotal, const char * aTitle)
|
|
{
|
|
if (aTotal == 0) {
|
|
return;
|
|
}
|
|
|
|
ReflowCounter * gTots = (ReflowCounter *)mMgr->LookUp(kGrandTotalsStr);
|
|
FILE * fd = mMgr->GetOutFile();
|
|
if (!fd) {
|
|
return;
|
|
}
|
|
|
|
fprintf(fd, "<tr><td><center>%s</center></td>", aTitle);
|
|
fprintf(fd, "<td><center>%d</center></td></tr>\n", aTotal);
|
|
|
|
if (gTots != this && aTotal > 0) {
|
|
gTots->Add(aTotal);
|
|
}
|
|
}
|
|
|
|
//------------------------------------------------------------------
|
|
//-- ReflowCountMgr
|
|
//------------------------------------------------------------------
|
|
|
|
#define KEY_BUF_SIZE_FOR_PTR 24 // adequate char[] buffer to sprintf a pointer
|
|
|
|
ReflowCountMgr::ReflowCountMgr()
|
|
{
|
|
mCounts = PL_NewHashTable(10, PL_HashString, PL_CompareStrings,
|
|
PL_CompareValues, nullptr, nullptr);
|
|
mIndiFrameCounts = PL_NewHashTable(10, PL_HashString, PL_CompareStrings,
|
|
PL_CompareValues, nullptr, nullptr);
|
|
mCycledOnce = false;
|
|
mDumpFrameCounts = false;
|
|
mDumpFrameByFrameCounts = false;
|
|
mPaintFrameByFrameCounts = false;
|
|
}
|
|
|
|
//------------------------------------------------------------------
|
|
ReflowCountMgr::~ReflowCountMgr()
|
|
{
|
|
CleanUp();
|
|
}
|
|
|
|
//------------------------------------------------------------------
|
|
ReflowCounter * ReflowCountMgr::LookUp(const char * aName)
|
|
{
|
|
if (nullptr != mCounts) {
|
|
ReflowCounter * counter = (ReflowCounter *)PL_HashTableLookup(mCounts, aName);
|
|
return counter;
|
|
}
|
|
return nullptr;
|
|
|
|
}
|
|
|
|
//------------------------------------------------------------------
|
|
void ReflowCountMgr::Add(const char * aName, nsIFrame * aFrame)
|
|
{
|
|
NS_ASSERTION(aName != nullptr, "Name shouldn't be null!");
|
|
|
|
if (mDumpFrameCounts && nullptr != mCounts) {
|
|
ReflowCounter * counter = (ReflowCounter *)PL_HashTableLookup(mCounts, aName);
|
|
if (counter == nullptr) {
|
|
counter = new ReflowCounter(this);
|
|
char * name = NS_strdup(aName);
|
|
NS_ASSERTION(name != nullptr, "null ptr");
|
|
PL_HashTableAdd(mCounts, name, counter);
|
|
}
|
|
counter->Add();
|
|
}
|
|
|
|
if ((mDumpFrameByFrameCounts || mPaintFrameByFrameCounts) &&
|
|
nullptr != mIndiFrameCounts &&
|
|
aFrame != nullptr) {
|
|
char key[KEY_BUF_SIZE_FOR_PTR];
|
|
sprintf(key, "%p", (void*)aFrame);
|
|
IndiReflowCounter * counter = (IndiReflowCounter *)PL_HashTableLookup(mIndiFrameCounts, key);
|
|
if (counter == nullptr) {
|
|
counter = new IndiReflowCounter(this);
|
|
counter->mFrame = aFrame;
|
|
counter->mName.AssignASCII(aName);
|
|
PL_HashTableAdd(mIndiFrameCounts, NS_strdup(key), counter);
|
|
}
|
|
// this eliminates extra counts from super classes
|
|
if (counter != nullptr && counter->mName.EqualsASCII(aName)) {
|
|
counter->mCount++;
|
|
counter->mCounter.Add(1);
|
|
}
|
|
}
|
|
}
|
|
|
|
//------------------------------------------------------------------
|
|
void ReflowCountMgr::PaintCount(const char* aName,
|
|
nsRenderingContext* aRenderingContext,
|
|
nsPresContext* aPresContext,
|
|
nsIFrame* aFrame,
|
|
const nsPoint& aOffset,
|
|
uint32_t aColor)
|
|
{
|
|
if (mPaintFrameByFrameCounts &&
|
|
nullptr != mIndiFrameCounts &&
|
|
aFrame != nullptr) {
|
|
char key[KEY_BUF_SIZE_FOR_PTR];
|
|
sprintf(key, "%p", (void*)aFrame);
|
|
IndiReflowCounter * counter =
|
|
(IndiReflowCounter *)PL_HashTableLookup(mIndiFrameCounts, key);
|
|
if (counter != nullptr && counter->mName.EqualsASCII(aName)) {
|
|
aRenderingContext->PushState();
|
|
aRenderingContext->Translate(aOffset);
|
|
nsFont font("Times", NS_FONT_STYLE_NORMAL, NS_FONT_VARIANT_NORMAL,
|
|
NS_FONT_WEIGHT_NORMAL, NS_FONT_STRETCH_NORMAL, 0,
|
|
nsPresContext::CSSPixelsToAppUnits(11));
|
|
|
|
nsRefPtr<nsFontMetrics> fm;
|
|
aPresContext->DeviceContext()->GetMetricsFor(font,
|
|
// We have one frame, therefore we must have a root...
|
|
aPresContext->GetPresShell()->GetRootFrame()->
|
|
StyleFont()->mLanguage,
|
|
aPresContext->GetUserFontSet(), *getter_AddRefs(fm));
|
|
|
|
aRenderingContext->SetFont(fm);
|
|
char buf[16];
|
|
sprintf(buf, "%d", counter->mCount);
|
|
nscoord x = 0, y = fm->MaxAscent();
|
|
nscoord width, height = fm->MaxHeight();
|
|
aRenderingContext->SetTextRunRTL(false);
|
|
width = aRenderingContext->GetWidth(buf);
|
|
|
|
uint32_t color;
|
|
uint32_t color2;
|
|
if (aColor != 0) {
|
|
color = aColor;
|
|
color2 = NS_RGB(0,0,0);
|
|
} else {
|
|
uint8_t rc = 0, gc = 0, bc = 0;
|
|
if (counter->mCount < 5) {
|
|
rc = 255;
|
|
gc = 255;
|
|
} else if ( counter->mCount < 11) {
|
|
gc = 255;
|
|
} else {
|
|
rc = 255;
|
|
}
|
|
color = NS_RGB(rc,gc,bc);
|
|
color2 = NS_RGB(rc/2,gc/2,bc/2);
|
|
}
|
|
|
|
nsRect rect(0,0, width+15, height+15);
|
|
aRenderingContext->SetColor(NS_RGB(0,0,0));
|
|
aRenderingContext->FillRect(rect);
|
|
aRenderingContext->SetColor(color2);
|
|
aRenderingContext->DrawString(buf, strlen(buf), x+15,y+15);
|
|
aRenderingContext->SetColor(color);
|
|
aRenderingContext->DrawString(buf, strlen(buf), x,y);
|
|
|
|
aRenderingContext->PopState();
|
|
}
|
|
}
|
|
}
|
|
|
|
//------------------------------------------------------------------
|
|
int ReflowCountMgr::RemoveItems(PLHashEntry *he, int i, void *arg)
|
|
{
|
|
char *str = (char *)he->key;
|
|
ReflowCounter * counter = (ReflowCounter *)he->value;
|
|
delete counter;
|
|
NS_Free(str);
|
|
|
|
return HT_ENUMERATE_REMOVE;
|
|
}
|
|
|
|
//------------------------------------------------------------------
|
|
int ReflowCountMgr::RemoveIndiItems(PLHashEntry *he, int i, void *arg)
|
|
{
|
|
char *str = (char *)he->key;
|
|
IndiReflowCounter * counter = (IndiReflowCounter *)he->value;
|
|
delete counter;
|
|
NS_Free(str);
|
|
|
|
return HT_ENUMERATE_REMOVE;
|
|
}
|
|
|
|
//------------------------------------------------------------------
|
|
void ReflowCountMgr::CleanUp()
|
|
{
|
|
if (nullptr != mCounts) {
|
|
PL_HashTableEnumerateEntries(mCounts, RemoveItems, nullptr);
|
|
PL_HashTableDestroy(mCounts);
|
|
mCounts = nullptr;
|
|
}
|
|
|
|
if (nullptr != mIndiFrameCounts) {
|
|
PL_HashTableEnumerateEntries(mIndiFrameCounts, RemoveIndiItems, nullptr);
|
|
PL_HashTableDestroy(mIndiFrameCounts);
|
|
mIndiFrameCounts = nullptr;
|
|
}
|
|
}
|
|
|
|
//------------------------------------------------------------------
|
|
int ReflowCountMgr::DoSingleTotal(PLHashEntry *he, int i, void *arg)
|
|
{
|
|
char *str = (char *)he->key;
|
|
ReflowCounter * counter = (ReflowCounter *)he->value;
|
|
|
|
counter->DisplayTotals(str);
|
|
|
|
return HT_ENUMERATE_NEXT;
|
|
}
|
|
|
|
//------------------------------------------------------------------
|
|
void ReflowCountMgr::DoGrandTotals()
|
|
{
|
|
if (nullptr != mCounts) {
|
|
ReflowCounter * gTots = (ReflowCounter *)PL_HashTableLookup(mCounts, kGrandTotalsStr);
|
|
if (gTots == nullptr) {
|
|
gTots = new ReflowCounter(this);
|
|
PL_HashTableAdd(mCounts, NS_strdup(kGrandTotalsStr), gTots);
|
|
} else {
|
|
gTots->ClearTotals();
|
|
}
|
|
|
|
printf("\t\t\t\tTotal\n");
|
|
for (uint32_t i=0;i<78;i++) {
|
|
printf("-");
|
|
}
|
|
printf("\n");
|
|
PL_HashTableEnumerateEntries(mCounts, DoSingleTotal, this);
|
|
}
|
|
}
|
|
|
|
static void RecurseIndiTotals(nsPresContext* aPresContext,
|
|
PLHashTable * aHT,
|
|
nsIFrame * aParentFrame,
|
|
int32_t aLevel)
|
|
{
|
|
if (aParentFrame == nullptr) {
|
|
return;
|
|
}
|
|
|
|
char key[KEY_BUF_SIZE_FOR_PTR];
|
|
sprintf(key, "%p", (void*)aParentFrame);
|
|
IndiReflowCounter * counter = (IndiReflowCounter *)PL_HashTableLookup(aHT, key);
|
|
if (counter) {
|
|
counter->mHasBeenOutput = true;
|
|
char * name = ToNewCString(counter->mName);
|
|
for (int32_t i=0;i<aLevel;i++) printf(" ");
|
|
printf("%s - %p [%d][", name, (void*)aParentFrame, counter->mCount);
|
|
printf("%d", counter->mCounter.GetTotal());
|
|
printf("]\n");
|
|
nsMemory::Free(name);
|
|
}
|
|
|
|
nsIFrame* child = aParentFrame->GetFirstPrincipalChild();
|
|
while (child) {
|
|
RecurseIndiTotals(aPresContext, aHT, child, aLevel+1);
|
|
child = child->GetNextSibling();
|
|
}
|
|
|
|
}
|
|
|
|
//------------------------------------------------------------------
|
|
int ReflowCountMgr::DoSingleIndi(PLHashEntry *he, int i, void *arg)
|
|
{
|
|
IndiReflowCounter * counter = (IndiReflowCounter *)he->value;
|
|
if (counter && !counter->mHasBeenOutput) {
|
|
char * name = ToNewCString(counter->mName);
|
|
printf("%s - %p [%d][", name, (void*)counter->mFrame, counter->mCount);
|
|
printf("%d", counter->mCounter.GetTotal());
|
|
printf("]\n");
|
|
nsMemory::Free(name);
|
|
}
|
|
return HT_ENUMERATE_NEXT;
|
|
}
|
|
|
|
//------------------------------------------------------------------
|
|
void ReflowCountMgr::DoIndiTotalsTree()
|
|
{
|
|
if (nullptr != mCounts) {
|
|
printf("\n------------------------------------------------\n");
|
|
printf("-- Individual Frame Counts\n");
|
|
printf("------------------------------------------------\n");
|
|
|
|
if (mPresShell) {
|
|
nsIFrame * rootFrame = mPresShell->FrameManager()->GetRootFrame();
|
|
RecurseIndiTotals(mPresContext, mIndiFrameCounts, rootFrame, 0);
|
|
printf("------------------------------------------------\n");
|
|
printf("-- Individual Counts of Frames not in Root Tree\n");
|
|
printf("------------------------------------------------\n");
|
|
PL_HashTableEnumerateEntries(mIndiFrameCounts, DoSingleIndi, this);
|
|
}
|
|
}
|
|
}
|
|
|
|
//------------------------------------------------------------------
|
|
int ReflowCountMgr::DoSingleHTMLTotal(PLHashEntry *he, int i, void *arg)
|
|
{
|
|
char *str = (char *)he->key;
|
|
ReflowCounter * counter = (ReflowCounter *)he->value;
|
|
|
|
counter->DisplayHTMLTotals(str);
|
|
|
|
return HT_ENUMERATE_NEXT;
|
|
}
|
|
|
|
//------------------------------------------------------------------
|
|
void ReflowCountMgr::DoGrandHTMLTotals()
|
|
{
|
|
if (nullptr != mCounts) {
|
|
ReflowCounter * gTots = (ReflowCounter *)PL_HashTableLookup(mCounts, kGrandTotalsStr);
|
|
if (gTots == nullptr) {
|
|
gTots = new ReflowCounter(this);
|
|
PL_HashTableAdd(mCounts, NS_strdup(kGrandTotalsStr), gTots);
|
|
} else {
|
|
gTots->ClearTotals();
|
|
}
|
|
|
|
static const char * title[] = {"Class", "Reflows"};
|
|
fprintf(mFD, "<tr>");
|
|
for (uint32_t i=0; i < ArrayLength(title); i++) {
|
|
fprintf(mFD, "<td><center><b>%s<b></center></td>", title[i]);
|
|
}
|
|
fprintf(mFD, "</tr>\n");
|
|
PL_HashTableEnumerateEntries(mCounts, DoSingleHTMLTotal, this);
|
|
}
|
|
}
|
|
|
|
//------------------------------------
|
|
void ReflowCountMgr::DisplayTotals(const char * aStr)
|
|
{
|
|
#ifdef DEBUG_rods
|
|
printf("%s\n", aStr?aStr:"No name");
|
|
#endif
|
|
if (mDumpFrameCounts) {
|
|
DoGrandTotals();
|
|
}
|
|
if (mDumpFrameByFrameCounts) {
|
|
DoIndiTotalsTree();
|
|
}
|
|
|
|
}
|
|
//------------------------------------
|
|
void ReflowCountMgr::DisplayHTMLTotals(const char * aStr)
|
|
{
|
|
#ifdef WIN32x // XXX NOT XP!
|
|
char name[1024];
|
|
|
|
char * sptr = strrchr(aStr, '/');
|
|
if (sptr) {
|
|
sptr++;
|
|
strcpy(name, sptr);
|
|
char * eptr = strrchr(name, '.');
|
|
if (eptr) {
|
|
*eptr = 0;
|
|
}
|
|
strcat(name, "_stats.html");
|
|
}
|
|
mFD = fopen(name, "w");
|
|
if (mFD) {
|
|
fprintf(mFD, "<html><head><title>Reflow Stats</title></head><body>\n");
|
|
const char * title = aStr?aStr:"No name";
|
|
fprintf(mFD, "<center><b>%s</b><br><table border=1 style=\"background-color:#e0e0e0\">", title);
|
|
DoGrandHTMLTotals();
|
|
fprintf(mFD, "</center></table>\n");
|
|
fprintf(mFD, "</body></html>\n");
|
|
fclose(mFD);
|
|
mFD = nullptr;
|
|
}
|
|
#endif // not XP!
|
|
}
|
|
|
|
//------------------------------------------------------------------
|
|
int ReflowCountMgr::DoClearTotals(PLHashEntry *he, int i, void *arg)
|
|
{
|
|
ReflowCounter * counter = (ReflowCounter *)he->value;
|
|
counter->ClearTotals();
|
|
|
|
return HT_ENUMERATE_NEXT;
|
|
}
|
|
|
|
//------------------------------------------------------------------
|
|
void ReflowCountMgr::ClearTotals()
|
|
{
|
|
PL_HashTableEnumerateEntries(mCounts, DoClearTotals, this);
|
|
}
|
|
|
|
//------------------------------------------------------------------
|
|
void ReflowCountMgr::ClearGrandTotals()
|
|
{
|
|
if (nullptr != mCounts) {
|
|
ReflowCounter * gTots = (ReflowCounter *)PL_HashTableLookup(mCounts, kGrandTotalsStr);
|
|
if (gTots == nullptr) {
|
|
gTots = new ReflowCounter(this);
|
|
PL_HashTableAdd(mCounts, NS_strdup(kGrandTotalsStr), gTots);
|
|
} else {
|
|
gTots->ClearTotals();
|
|
gTots->SetTotalsCache();
|
|
}
|
|
}
|
|
}
|
|
|
|
//------------------------------------------------------------------
|
|
int ReflowCountMgr::DoDisplayDiffTotals(PLHashEntry *he, int i, void *arg)
|
|
{
|
|
bool cycledOnce = (arg != 0);
|
|
|
|
char *str = (char *)he->key;
|
|
ReflowCounter * counter = (ReflowCounter *)he->value;
|
|
|
|
if (cycledOnce) {
|
|
counter->CalcDiffInTotals();
|
|
counter->DisplayDiffTotals(str);
|
|
}
|
|
counter->SetTotalsCache();
|
|
|
|
return HT_ENUMERATE_NEXT;
|
|
}
|
|
|
|
//------------------------------------------------------------------
|
|
void ReflowCountMgr::DisplayDiffsInTotals(const char * aStr)
|
|
{
|
|
if (mCycledOnce) {
|
|
printf("Differences\n");
|
|
for (int32_t i=0;i<78;i++) {
|
|
printf("-");
|
|
}
|
|
printf("\n");
|
|
ClearGrandTotals();
|
|
}
|
|
PL_HashTableEnumerateEntries(mCounts, DoDisplayDiffTotals, (void *)mCycledOnce);
|
|
|
|
mCycledOnce = true;
|
|
}
|
|
|
|
#endif // MOZ_REFLOW_PERF
|
|
|
|
// make a color string like #RRGGBB
|
|
void ColorToString(nscolor aColor, nsAutoString &aString)
|
|
{
|
|
char buf[8];
|
|
|
|
PR_snprintf(buf, sizeof(buf), "#%02x%02x%02x",
|
|
NS_GET_R(aColor), NS_GET_G(aColor), NS_GET_B(aColor));
|
|
CopyASCIItoUTF16(buf, aString);
|
|
}
|
|
|
|
nsIFrame* nsIPresShell::GetAbsoluteContainingBlock(nsIFrame *aFrame)
|
|
{
|
|
return FrameConstructor()->GetAbsoluteContainingBlock(aFrame,
|
|
nsCSSFrameConstructor::ABS_POS);
|
|
}
|
|
|
|
#ifdef ACCESSIBILITY
|
|
bool
|
|
nsIPresShell::IsAccessibilityActive()
|
|
{
|
|
return GetAccService() != nullptr;
|
|
}
|
|
|
|
nsAccessibilityService*
|
|
nsIPresShell::AccService()
|
|
{
|
|
return GetAccService();
|
|
}
|
|
#endif
|
|
|
|
static bool inited = false;
|
|
|
|
void nsIPresShell::InitializeStatics()
|
|
{
|
|
NS_ASSERTION(!inited, "InitializeStatics called multiple times!");
|
|
gCaptureTouchList.Init();
|
|
inited = true;
|
|
}
|
|
|
|
void nsIPresShell::ReleaseStatics()
|
|
{
|
|
NS_ASSERTION(inited, "ReleaseStatics called without Initialize!");
|
|
}
|
|
|
|
// Asks our docshell whether we're active.
|
|
void PresShell::QueryIsActive()
|
|
{
|
|
nsCOMPtr<nsISupports> container = mPresContext->GetContainer();
|
|
if (mDocument) {
|
|
nsIDocument* displayDoc = mDocument->GetDisplayDocument();
|
|
if (displayDoc) {
|
|
// Ok, we're an external resource document -- we need to use our display
|
|
// document's docshell to determine "IsActive" status, since we lack
|
|
// a container.
|
|
NS_ABORT_IF_FALSE(!container,
|
|
"external resource doc shouldn't have "
|
|
"its own container");
|
|
|
|
nsIPresShell* displayPresShell = displayDoc->GetShell();
|
|
if (displayPresShell) {
|
|
container = displayPresShell->GetPresContext()->GetContainer();
|
|
}
|
|
}
|
|
}
|
|
|
|
nsCOMPtr<nsIDocShell> docshell(do_QueryInterface(container));
|
|
if (docshell) {
|
|
bool isActive;
|
|
nsresult rv = docshell->GetIsActive(&isActive);
|
|
if (NS_SUCCEEDED(rv))
|
|
SetIsActive(isActive);
|
|
}
|
|
}
|
|
|
|
// Helper for propagating mIsActive changes to external resources
|
|
static bool
|
|
SetExternalResourceIsActive(nsIDocument* aDocument, void* aClosure)
|
|
{
|
|
nsIPresShell* shell = aDocument->GetShell();
|
|
if (shell) {
|
|
shell->SetIsActive(*static_cast<bool*>(aClosure));
|
|
}
|
|
return true;
|
|
}
|
|
|
|
static void
|
|
SetPluginIsActive(nsIContent* aContent, void* aClosure)
|
|
{
|
|
nsIFrame *frame = aContent->GetPrimaryFrame();
|
|
nsIObjectFrame *objectFrame = do_QueryFrame(frame);
|
|
if (objectFrame) {
|
|
objectFrame->SetIsDocumentActive(*static_cast<bool*>(aClosure));
|
|
}
|
|
}
|
|
|
|
nsresult
|
|
PresShell::SetIsActive(bool aIsActive)
|
|
{
|
|
NS_PRECONDITION(mDocument, "should only be called with a document");
|
|
|
|
mIsActive = aIsActive;
|
|
nsPresContext* presContext = GetPresContext();
|
|
if (presContext &&
|
|
presContext->RefreshDriver()->PresContext() == presContext) {
|
|
presContext->RefreshDriver()->SetThrottled(!mIsActive);
|
|
}
|
|
|
|
// Propagate state-change to my resource documents' PresShells
|
|
mDocument->EnumerateExternalResources(SetExternalResourceIsActive,
|
|
&aIsActive);
|
|
mDocument->EnumerateFreezableElements(SetPluginIsActive,
|
|
&aIsActive);
|
|
nsresult rv = UpdateImageLockingState();
|
|
#ifdef ACCESSIBILITY
|
|
if (aIsActive) {
|
|
nsAccessibilityService* accService = AccService();
|
|
if (accService) {
|
|
accService->PresShellActivated(this);
|
|
}
|
|
}
|
|
#endif
|
|
|
|
// We have this odd special case here because remote content behaves
|
|
// differently from same-process content when "hidden". In
|
|
// desktop-type "browser UIs", hidden "tabs" have documents that are
|
|
// part of the chrome tree. When the tabs are hidden, their content
|
|
// is no longer part of the visible document tree, and the layers
|
|
// for the content are naturally released.
|
|
//
|
|
// Remote content is its own top-level tree in its subprocess. When
|
|
// it's "hidden", there's no transaction in which the document
|
|
// thinks it's not visible, so layers can be retained forever. This
|
|
// is problematic when those layers uselessly hold on to precious
|
|
// resources like directly texturable memory.
|
|
//
|
|
// PresShell::SetIsActive() is the first C++ entry point at which we
|
|
// (i) know that our parent process wants our content to be hidden;
|
|
// and (ii) has easy access to the TabChild. So we use this
|
|
// notification to signal the TabChild to drop its layer tree and
|
|
// stop trying to repaint.
|
|
if (TabChild* tab = GetTabChildFrom(this)) {
|
|
if (aIsActive) {
|
|
tab->MakeVisible();
|
|
if (!mIsZombie) {
|
|
if (nsIFrame* root = mFrameConstructor->GetRootFrame()) {
|
|
FrameLayerBuilder::InvalidateAllLayersForFrame(
|
|
nsLayoutUtils::GetDisplayRootFrame(root));
|
|
root->SchedulePaint();
|
|
}
|
|
}
|
|
} else {
|
|
tab->MakeHidden();
|
|
}
|
|
}
|
|
|
|
return rv;
|
|
}
|
|
|
|
/*
|
|
* Determines the current image locking state. Called when one of the
|
|
* dependent factors changes.
|
|
*/
|
|
nsresult
|
|
PresShell::UpdateImageLockingState()
|
|
{
|
|
// We're locked if we're both thawed and active.
|
|
return mDocument->SetImageLockingState(!mFrozen && mIsActive);
|
|
}
|
|
|
|
PresShell*
|
|
PresShell::GetRootPresShell()
|
|
{
|
|
if (mPresContext) {
|
|
nsPresContext* rootPresContext = mPresContext->GetRootPresContext();
|
|
if (rootPresContext) {
|
|
return static_cast<PresShell*>(rootPresContext->PresShell());
|
|
}
|
|
}
|
|
return nullptr;
|
|
}
|
|
|
|
void
|
|
PresShell::SizeOfIncludingThis(MallocSizeOf aMallocSizeOf,
|
|
nsArenaMemoryStats *aArenaObjectsSize,
|
|
size_t *aPresShellSize,
|
|
size_t *aStyleSetsSize,
|
|
size_t *aTextRunsSize,
|
|
size_t *aPresContextSize)
|
|
{
|
|
mFrameArena.SizeOfExcludingThis(aMallocSizeOf, aArenaObjectsSize);
|
|
*aPresShellSize = aMallocSizeOf(this);
|
|
*aPresShellSize += aArenaObjectsSize->mOther;
|
|
|
|
*aStyleSetsSize = StyleSet()->SizeOfIncludingThis(aMallocSizeOf);
|
|
|
|
*aTextRunsSize = SizeOfTextRuns(aMallocSizeOf);
|
|
|
|
*aPresContextSize = mPresContext->SizeOfIncludingThis(aMallocSizeOf);
|
|
}
|
|
|
|
size_t
|
|
PresShell::SizeOfTextRuns(MallocSizeOf aMallocSizeOf) const
|
|
{
|
|
nsIFrame* rootFrame = mFrameConstructor->GetRootFrame();
|
|
if (!rootFrame) {
|
|
return 0;
|
|
}
|
|
|
|
// clear the TEXT_RUN_MEMORY_ACCOUNTED flags
|
|
nsLayoutUtils::SizeOfTextRunsForFrames(rootFrame, nullptr,
|
|
/* clear = */true);
|
|
|
|
// collect the total memory in use for textruns
|
|
return nsLayoutUtils::SizeOfTextRunsForFrames(rootFrame, aMallocSizeOf,
|
|
/* clear = */false);
|
|
}
|
|
|
|
void
|
|
nsIPresShell::MarkFixedFramesForReflow(IntrinsicDirty aIntrinsicDirty)
|
|
{
|
|
nsIFrame* rootFrame = mFrameConstructor->GetRootFrame();
|
|
if (rootFrame) {
|
|
const nsFrameList& childList = rootFrame->GetChildList(nsIFrame::kFixedList);
|
|
for (nsFrameList::Enumerator e(childList); !e.AtEnd(); e.Next()) {
|
|
FrameNeedsReflow(e.get(), aIntrinsicDirty, NS_FRAME_IS_DIRTY);
|
|
}
|
|
}
|
|
}
|
|
|
|
void
|
|
nsIPresShell::SetScrollPositionClampingScrollPortSize(nscoord aWidth, nscoord aHeight)
|
|
{
|
|
if (!mScrollPositionClampingScrollPortSizeSet ||
|
|
mScrollPositionClampingScrollPortSize.width != aWidth ||
|
|
mScrollPositionClampingScrollPortSize.height != aHeight) {
|
|
mScrollPositionClampingScrollPortSizeSet = true;
|
|
mScrollPositionClampingScrollPortSize.width = aWidth;
|
|
mScrollPositionClampingScrollPortSize.height = aHeight;
|
|
|
|
MarkFixedFramesForReflow(eResize);
|
|
}
|
|
}
|
|
|
|
void
|
|
nsIPresShell::SetContentDocumentFixedPositionMargins(const nsMargin& aMargins)
|
|
{
|
|
if (mContentDocumentFixedPositionMargins == aMargins) {
|
|
return;
|
|
}
|
|
|
|
mContentDocumentFixedPositionMargins = aMargins;
|
|
|
|
MarkFixedFramesForReflow(eResize);
|
|
}
|
|
|
|
void
|
|
PresShell::SetupFontInflation()
|
|
{
|
|
mFontSizeInflationEmPerLine = nsLayoutUtils::FontSizeInflationEmPerLine();
|
|
mFontSizeInflationMinTwips = nsLayoutUtils::FontSizeInflationMinTwips();
|
|
mFontSizeInflationLineThreshold = nsLayoutUtils::FontSizeInflationLineThreshold();
|
|
mFontSizeInflationForceEnabled = nsLayoutUtils::FontSizeInflationForceEnabled();
|
|
mFontSizeInflationDisabledInMasterProcess = nsLayoutUtils::FontSizeInflationDisabledInMasterProcess();
|
|
|
|
NotifyFontSizeInflationEnabledIsDirty();
|
|
}
|
|
|
|
void
|
|
nsIPresShell::RecomputeFontSizeInflationEnabled()
|
|
{
|
|
mFontSizeInflationEnabledIsDirty = false;
|
|
|
|
MOZ_ASSERT(mPresContext, "our pres context should not be null");
|
|
if ((FontSizeInflationEmPerLine() == 0 &&
|
|
FontSizeInflationMinTwips() == 0) || mPresContext->IsChrome()) {
|
|
mFontSizeInflationEnabled = false;
|
|
return;
|
|
}
|
|
|
|
// Force-enabling font inflation always trumps the heuristics here.
|
|
if (!FontSizeInflationForceEnabled()) {
|
|
if (TabChild* tab = GetTabChildFrom(this)) {
|
|
// We're in a child process. Cancel inflation if we're not
|
|
// async-pan zoomed.
|
|
if (!tab->IsAsyncPanZoomEnabled()) {
|
|
mFontSizeInflationEnabled = false;
|
|
return;
|
|
}
|
|
} else if (XRE_GetProcessType() == GeckoProcessType_Default) {
|
|
// We're in the master process. Cancel inflation if it's been
|
|
// explicitly disabled.
|
|
if (FontSizeInflationDisabledInMasterProcess()) {
|
|
mFontSizeInflationEnabled = false;
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
|
|
// XXXjwir3:
|
|
// See bug 706918, comment 23 for more information on this particular section
|
|
// of the code. We're using "screen size" in place of the size of the content
|
|
// area, because on mobile, these are close or equal. This will work for our
|
|
// purposes (bug 706198), but it will need to be changed in the future to be
|
|
// more correct when we bring the rest of the viewport code into platform.
|
|
// We actually want the size of the content area, in the event that we don't
|
|
// have any metadata about the width and/or height. On mobile, the screen size
|
|
// and the size of the content area are very close, or the same value.
|
|
// In XUL fennec, the content area is the size of the <browser> widget, but
|
|
// in native fennec, the content area is the size of the Gecko LayerView
|
|
// object.
|
|
|
|
// TODO:
|
|
// Once bug 716575 has been resolved, this code should be changed so that it
|
|
// does the right thing on all platforms.
|
|
nsresult rv;
|
|
nsCOMPtr<nsIScreenManager> screenMgr =
|
|
do_GetService("@mozilla.org/gfx/screenmanager;1", &rv);
|
|
if (!NS_SUCCEEDED(rv)) {
|
|
mFontSizeInflationEnabled = false;
|
|
return;
|
|
}
|
|
|
|
nsCOMPtr<nsIScreen> screen;
|
|
screenMgr->GetPrimaryScreen(getter_AddRefs(screen));
|
|
if (screen) {
|
|
int32_t screenLeft, screenTop, screenWidth, screenHeight;
|
|
screen->GetRect(&screenLeft, &screenTop, &screenWidth, &screenHeight);
|
|
|
|
nsViewportInfo vInf =
|
|
nsContentUtils::GetViewportInfo(GetDocument(), screenWidth, screenHeight);
|
|
|
|
if (vInf.GetDefaultZoom() >= 1.0 || vInf.IsAutoSizeEnabled()) {
|
|
mFontSizeInflationEnabled = false;
|
|
return;
|
|
}
|
|
}
|
|
|
|
mFontSizeInflationEnabled = true;
|
|
}
|
|
|
|
bool
|
|
nsIPresShell::FontSizeInflationEnabled()
|
|
{
|
|
if (mFontSizeInflationEnabledIsDirty) {
|
|
RecomputeFontSizeInflationEnabled();
|
|
}
|
|
|
|
return mFontSizeInflationEnabled;
|
|
}
|
|
|
|
void
|
|
nsIPresShell::SetMaxLineBoxWidth(nscoord aMaxLineBoxWidth)
|
|
{
|
|
NS_ASSERTION(aMaxLineBoxWidth >= 0, "attempting to set max line box width to a negative value");
|
|
|
|
if (mMaxLineBoxWidth != aMaxLineBoxWidth) {
|
|
mMaxLineBoxWidth = aMaxLineBoxWidth;
|
|
mReflowOnZoomPending = true;
|
|
FrameNeedsReflow(GetRootFrame(), eResize, NS_FRAME_HAS_DIRTY_CHILDREN);
|
|
}
|
|
}
|