mirror of
https://gitlab.winehq.org/wine/wine-gecko.git
synced 2024-09-13 09:24:08 -07:00
9525 lines
306 KiB
C++
9525 lines
306 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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* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is mozilla.org code.
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*
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* The Initial Developer of the Original Code is
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* Netscape Communications Corporation.
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* Portions created by the Initial Developer are Copyright (C) 1998
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* Steve Clark <buster@netscape.com>
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* Håkan Waara <hwaara@chello.se>
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* Dan Rosen <dr@netscape.com>
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* Daniel Glazman <glazman@netscape.com>
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* Mats Palmgren <matspal@gmail.com>
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* Mihai Sucan <mihai.sucan@gmail.com>
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either of the GNU General Public License Version 2 or later (the "GPL"),
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* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK *****
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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 "nsIPresShell.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 "nsStubDocumentObserver.h"
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#include "nsStyleSet.h"
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#include "nsCSSStyleSheet.h" // XXX for UA sheet loading hack, can this go away please?
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#include "nsIDOMCSSStyleSheet.h" // for Pref-related rule management (bugs 22963,20760,31816)
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#ifdef MOZ_CSS_ANIMATIONS
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#include "nsAnimationManager.h"
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#endif
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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 "nsIViewManager.h"
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#include "nsCRT.h"
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#include "nsCRTGlue.h"
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#include "prlog.h"
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#include "prmem.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 "nsHashtable.h"
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#include "nsIViewObserver.h"
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#include "nsContainerFrame.h"
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#include "nsDOMEvent.h"
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#include "nsGUIEvent.h"
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#include "nsHTMLParts.h"
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#include "nsContentUtils.h"
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#include "nsISelection.h"
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#include "nsISelectionController.h"
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#include "nsISelectionPrivate.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 "nsWeakReference.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 "nsIParser.h"
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#include "nsParserCIID.h"
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#include "nsFrameSelection.h"
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#include "nsViewsCID.h"
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#include "nsPresArena.h"
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#include "nsFrameManager.h"
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#include "nsEventStateManager.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 "nsIObserverService.h"
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#include "nsIObserver.h"
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#include "nsIDocShell.h" // for reflow observation
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#include "nsIBaseWindow.h"
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#include "nsLayoutErrors.h"
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#include "nsLayoutUtils.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 "nsIAttribute.h"
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#include "nsIGlobalHistory2.h"
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#include "nsDisplayList.h"
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#include "nsIRegion.h"
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#include "nsRegion.h"
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#include "nsRenderingContext.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 "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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#ifdef MOZ_MEDIA
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#include "nsHTMLMediaElement.h"
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#endif
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#ifdef MOZ_SMIL
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#include "nsSMILAnimationController.h"
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#endif
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#include "nsRefreshDriver.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 "prlong.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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#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/FunctionTimer.h"
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#include "mozilla/Preferences.h"
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#include "Layers.h"
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#ifdef NS_FUNCTION_TIMER
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#define NS_TIME_FUNCTION_DECLARE_DOCURL \
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nsCAutoString docURL__("N/A"); \
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nsIURI *uri__ = mDocument->GetDocumentURI(); \
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if (uri__) uri__->GetSpec(docURL__);
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#define NS_TIME_FUNCTION_WITH_DOCURL \
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NS_TIME_FUNCTION_DECLARE_DOCURL \
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NS_TIME_FUNCTION_MIN_FMT(1.0, \
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"%s (line %d) (document: %s)", MOZ_FUNCTION_NAME, \
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__LINE__, docURL__.get())
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#else
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#define NS_TIME_FUNCTION_WITH_DOCURL do{} while(0)
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#endif
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#define ANCHOR_SCROLL_FLAGS (SCROLL_OVERFLOW_HIDDEN | SCROLL_NO_PARENT_FRAMES)
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#include "nsContentCID.h"
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static NS_DEFINE_IID(kRangeCID, NS_RANGE_CID);
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/* for NS_MEMORY_REPORTER_IMPLEMENT */
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#include "nsIMemoryReporter.h"
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using namespace mozilla;
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using namespace mozilla::dom;
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using namespace mozilla::layers;
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PRBool nsIPresShell::gIsAccessibilityActive = PR_FALSE;
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CapturingContentInfo nsIPresShell::gCaptureInfo =
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{ PR_FALSE /* mAllowed */, PR_FALSE /* mRetargetToElement */,
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PR_FALSE /* mPreventDrag */, nsnull /* mContent */ };
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nsIContent* nsIPresShell::gKeyDownTarget;
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static PRUint32
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ChangeFlag(PRUint32 aFlags, PRBool aOnOff, PRUint32 aFlag)
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{
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PRUint32 flags;
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if (aOnOff) {
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flags = (aFlags | aFlag);
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} else {
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flags = (aFlag & ~aFlag);
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}
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return flags;
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}
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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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nsCOMPtr<nsIRange> 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(nsIRange* aRange, nsIFrame* aFrame)
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: mRange(aRange), mBuilder(aFrame, nsDisplayListBuilder::PAINTING, PR_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 NS_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 PRUint32 gVerifyReflowFlags;
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struct VerifyReflowFlags {
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const char* name;
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PRUint32 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 = nsnull);
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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(PRUint32 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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PRUint32 GetTotal() { return mTotal; }
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protected:
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void DisplayTotals(PRUint32 aTotal, const char * aTitle);
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void DisplayHTMLTotals(PRUint32 aTotal, const char * aTitle);
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PRUint32 mTotal;
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PRUint32 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 = nsnull)
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: mFrame(nsnull),
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mCount(0),
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mMgr(aMgr),
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mCounter(aMgr),
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mHasBeenOutput(PR_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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PRInt32 mCount;
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ReflowCountMgr * mMgr; // weak reference (don't delete)
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ReflowCounter mCounter;
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PRBool 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, PRUint32 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(PRBool aVal) { mDumpFrameCounts = aVal; }
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void SetDumpFrameByFrameCounts(PRBool aVal) { mDumpFrameByFrameCounts = aVal; }
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void SetPaintFrameCounts(PRBool aVal) { mPaintFrameByFrameCounts = aVal; }
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PRBool IsPaintingFrameCounts() { return mPaintFrameByFrameCounts; }
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protected:
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void DisplayTotals(PRUint32 aTotal, PRUint32 * aDupArray, char * aTitle);
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void DisplayHTMLTotals(PRUint32 aTotal, PRUint32 * aDupArray, char * aTitle);
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static PRIntn RemoveItems(PLHashEntry *he, PRIntn i, void *arg);
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static PRIntn RemoveIndiItems(PLHashEntry *he, PRIntn i, void *arg);
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|
void CleanUp();
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// stdout Output Methods
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static PRIntn DoSingleTotal(PLHashEntry *he, PRIntn i, void *arg);
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static PRIntn DoSingleIndi(PLHashEntry *he, PRIntn 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 PRIntn DoSingleHTMLTotal(PLHashEntry *he, PRIntn i, void *arg);
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void DoGrandHTMLTotals();
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// Zero Out the Totals
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static PRIntn DoClearTotals(PLHashEntry *he, PRIntn i, void *arg);
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// Displays the Diff Totals
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static PRIntn DoDisplayDiffTotals(PLHashEntry *he, PRIntn 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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PRBool mDumpFrameCounts;
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PRBool mDumpFrameByFrameCounts;
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PRBool mPaintFrameByFrameCounts;
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PRBool 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
|
|
// 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
|
|
// 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 PRInt32 gMaxRCProcessingTime = -1;
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|
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#define MARK_INCREMENT 50
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#define BLOCK_INCREMENT 4044 /* a bit under 4096, for malloc overhead */
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|
|
/**A block of memory that the stack will
|
|
* chop up and hand out
|
|
*/
|
|
struct StackBlock {
|
|
|
|
// a block of memory. Note that this must be first so that it will
|
|
// be aligned.
|
|
char mBlock[BLOCK_INCREMENT];
|
|
|
|
// another block of memory that would only be created
|
|
// if our stack overflowed. Yes we have the ability
|
|
// to grow on a stack overflow
|
|
StackBlock* mNext;
|
|
|
|
StackBlock() : mNext(nsnull) { }
|
|
~StackBlock() { }
|
|
};
|
|
|
|
/* we hold an array of marks. A push pushes a mark on the stack
|
|
* a pop pops it off.
|
|
*/
|
|
struct StackMark {
|
|
// the block of memory we are currently handing out chunks of
|
|
StackBlock* mBlock;
|
|
|
|
// our current position in the memory
|
|
size_t mPos;
|
|
};
|
|
|
|
|
|
/* A stack arena allows a stack based interface to a block of memory.
|
|
* It should be used when you need to allocate some temporary memory that
|
|
* you will immediately return.
|
|
*/
|
|
class StackArena {
|
|
public:
|
|
StackArena();
|
|
~StackArena();
|
|
|
|
nsresult Init() { return mBlocks ? NS_OK : NS_ERROR_OUT_OF_MEMORY; }
|
|
|
|
// Memory management functions
|
|
void* Allocate(size_t aSize);
|
|
void Push();
|
|
void Pop();
|
|
|
|
PRUint32 Size() {
|
|
PRUint32 result = 0;
|
|
StackBlock *block = mBlocks;
|
|
while (block) {
|
|
result += sizeof(StackBlock);
|
|
block = block->mNext;
|
|
}
|
|
return result;
|
|
}
|
|
|
|
private:
|
|
// our current position in memory
|
|
size_t mPos;
|
|
|
|
// a list of memory block. Usually there is only one
|
|
// but if we overrun our stack size we can get more memory.
|
|
StackBlock* mBlocks;
|
|
|
|
// the current block of memory we are passing our chucks of
|
|
StackBlock* mCurBlock;
|
|
|
|
// our stack of mark where push has been called
|
|
StackMark* mMarks;
|
|
|
|
// the current top of the mark list
|
|
PRUint32 mStackTop;
|
|
|
|
// the size of the mark array
|
|
PRUint32 mMarkLength;
|
|
};
|
|
|
|
|
|
|
|
StackArena::StackArena()
|
|
{
|
|
mMarkLength = 0;
|
|
mMarks = nsnull;
|
|
|
|
// allocate our stack memory
|
|
mBlocks = new StackBlock();
|
|
mCurBlock = mBlocks;
|
|
|
|
mStackTop = 0;
|
|
mPos = 0;
|
|
}
|
|
|
|
StackArena::~StackArena()
|
|
{
|
|
// free up our data
|
|
delete[] mMarks;
|
|
while(mBlocks)
|
|
{
|
|
StackBlock* toDelete = mBlocks;
|
|
mBlocks = mBlocks->mNext;
|
|
delete toDelete;
|
|
}
|
|
}
|
|
|
|
void
|
|
StackArena::Push()
|
|
{
|
|
// Resize the mark array if we overrun it. Failure to allocate the
|
|
// mark array is not fatal; we just won't free to that mark. This
|
|
// allows callers not to worry about error checking.
|
|
if (mStackTop >= mMarkLength)
|
|
{
|
|
PRUint32 newLength = mStackTop + MARK_INCREMENT;
|
|
StackMark* newMarks = new StackMark[newLength];
|
|
if (newMarks) {
|
|
if (mMarkLength)
|
|
memcpy(newMarks, mMarks, sizeof(StackMark)*mMarkLength);
|
|
// Fill in any marks that we couldn't allocate during a prior call
|
|
// to Push().
|
|
for (; mMarkLength < mStackTop; ++mMarkLength) {
|
|
NS_NOTREACHED("should only hit this on out-of-memory");
|
|
newMarks[mMarkLength].mBlock = mCurBlock;
|
|
newMarks[mMarkLength].mPos = mPos;
|
|
}
|
|
delete [] mMarks;
|
|
mMarks = newMarks;
|
|
mMarkLength = newLength;
|
|
}
|
|
}
|
|
|
|
// set a mark at the top (if we can)
|
|
NS_ASSERTION(mStackTop < mMarkLength, "out of memory");
|
|
if (mStackTop < mMarkLength) {
|
|
mMarks[mStackTop].mBlock = mCurBlock;
|
|
mMarks[mStackTop].mPos = mPos;
|
|
}
|
|
|
|
mStackTop++;
|
|
}
|
|
|
|
void*
|
|
StackArena::Allocate(size_t aSize)
|
|
{
|
|
NS_ASSERTION(mStackTop > 0, "Allocate called without Push");
|
|
|
|
// make sure we are aligned. Beard said 8 was safer then 4.
|
|
// Round size to multiple of 8
|
|
aSize = PR_ROUNDUP(aSize, 8);
|
|
|
|
// if the size makes the stack overflow. Grab another block for the stack
|
|
if (mPos + aSize >= BLOCK_INCREMENT)
|
|
{
|
|
NS_ASSERTION(aSize <= BLOCK_INCREMENT,"Requested memory is greater that our block size!!");
|
|
if (mCurBlock->mNext == nsnull)
|
|
mCurBlock->mNext = new StackBlock();
|
|
|
|
mCurBlock = mCurBlock->mNext;
|
|
mPos = 0;
|
|
}
|
|
|
|
// return the chunk they need.
|
|
void *result = mCurBlock->mBlock + mPos;
|
|
mPos += aSize;
|
|
|
|
return result;
|
|
}
|
|
|
|
void
|
|
StackArena::Pop()
|
|
{
|
|
// pop off the mark
|
|
NS_ASSERTION(mStackTop > 0, "unmatched pop");
|
|
mStackTop--;
|
|
|
|
if (mStackTop >= mMarkLength) {
|
|
// We couldn't allocate the marks array at the time of the push, so
|
|
// we don't know where we're freeing to.
|
|
NS_NOTREACHED("out of memory");
|
|
if (mStackTop == 0) {
|
|
// But we do know if we've completely pushed the stack.
|
|
mCurBlock = mBlocks;
|
|
mPos = 0;
|
|
}
|
|
return;
|
|
}
|
|
|
|
#ifdef DEBUG
|
|
// Mark the "freed" memory with 0xdd to help with debugging of memory
|
|
// allocation problems.
|
|
{
|
|
StackBlock *block = mMarks[mStackTop].mBlock, *block_end = mCurBlock;
|
|
size_t pos = mMarks[mStackTop].mPos;
|
|
for (; block != block_end; block = block->mNext, pos = 0) {
|
|
memset(block->mBlock + pos, 0xdd, sizeof(block->mBlock) - pos);
|
|
}
|
|
memset(block->mBlock + pos, 0xdd, mPos - pos);
|
|
}
|
|
#endif
|
|
|
|
mCurBlock = mMarks[mStackTop].mBlock;
|
|
mPos = mMarks[mStackTop].mPos;
|
|
}
|
|
|
|
struct nsCallbackEventRequest
|
|
{
|
|
nsIReflowCallback* callback;
|
|
nsCallbackEventRequest* next;
|
|
};
|
|
|
|
// ----------------------------------------------------------------------------
|
|
#define ASSERT_REFLOW_SCHEDULED_STATE() \
|
|
NS_ASSERTION(mReflowScheduled == \
|
|
GetPresContext()->RefreshDriver()-> \
|
|
IsLayoutFlushObserver(this), "Unexpected state")
|
|
|
|
class nsPresShellEventCB;
|
|
class nsAutoCauseReflowNotifier;
|
|
|
|
class PresShell : public nsIPresShell, public nsIViewObserver,
|
|
public nsStubDocumentObserver,
|
|
public nsISelectionController, public nsIObserver,
|
|
public nsSupportsWeakReference
|
|
{
|
|
public:
|
|
PresShell();
|
|
|
|
NS_DECL_AND_IMPL_ZEROING_OPERATOR_NEW
|
|
|
|
// nsISupports
|
|
NS_DECL_ISUPPORTS
|
|
|
|
// nsIPresShell
|
|
virtual NS_HIDDEN_(nsresult) Init(nsIDocument* aDocument,
|
|
nsPresContext* aPresContext,
|
|
nsIViewManager* aViewManager,
|
|
nsStyleSet* aStyleSet,
|
|
nsCompatibility aCompatMode);
|
|
virtual NS_HIDDEN_(void) Destroy();
|
|
|
|
virtual NS_HIDDEN_(void*) AllocateFrame(nsQueryFrame::FrameIID aCode,
|
|
size_t aSize);
|
|
virtual NS_HIDDEN_(void) FreeFrame(nsQueryFrame::FrameIID aCode,
|
|
void* aChunk);
|
|
|
|
virtual NS_HIDDEN_(void*) AllocateMisc(size_t aSize);
|
|
virtual NS_HIDDEN_(void) FreeMisc(size_t aSize, void* aChunk);
|
|
|
|
// Dynamic stack memory allocation
|
|
virtual NS_HIDDEN_(void) PushStackMemory();
|
|
virtual NS_HIDDEN_(void) PopStackMemory();
|
|
virtual NS_HIDDEN_(void*) AllocateStackMemory(size_t aSize);
|
|
|
|
virtual NS_HIDDEN_(nsresult) SetPreferenceStyleRules(PRBool aForceReflow);
|
|
|
|
NS_IMETHOD GetSelection(SelectionType aType, nsISelection** aSelection);
|
|
virtual nsISelection* GetCurrentSelection(SelectionType aType);
|
|
|
|
NS_IMETHOD SetDisplaySelection(PRInt16 aToggle);
|
|
NS_IMETHOD GetDisplaySelection(PRInt16 *aToggle);
|
|
NS_IMETHOD ScrollSelectionIntoView(SelectionType aType, SelectionRegion aRegion,
|
|
PRInt16 aFlags);
|
|
NS_IMETHOD RepaintSelection(SelectionType aType);
|
|
|
|
virtual NS_HIDDEN_(void) BeginObservingDocument();
|
|
virtual NS_HIDDEN_(void) EndObservingDocument();
|
|
virtual NS_HIDDEN_(nsresult) InitialReflow(nscoord aWidth, nscoord aHeight);
|
|
virtual NS_HIDDEN_(nsresult) ResizeReflow(nscoord aWidth, nscoord aHeight);
|
|
virtual NS_HIDDEN_(nsresult) ResizeReflowOverride(nscoord aWidth, nscoord aHeight);
|
|
virtual NS_HIDDEN_(void) StyleChangeReflow();
|
|
virtual NS_HIDDEN_(nsIPageSequenceFrame*) GetPageSequenceFrame() const;
|
|
virtual NS_HIDDEN_(nsIFrame*) GetRealPrimaryFrameFor(nsIContent* aContent) const;
|
|
|
|
virtual NS_HIDDEN_(nsIFrame*) GetPlaceholderFrameFor(nsIFrame* aFrame) const;
|
|
virtual NS_HIDDEN_(void) FrameNeedsReflow(nsIFrame *aFrame, IntrinsicDirty aIntrinsicDirty,
|
|
nsFrameState aBitToAdd);
|
|
virtual NS_HIDDEN_(void) FrameNeedsToContinueReflow(nsIFrame *aFrame);
|
|
virtual NS_HIDDEN_(void) CancelAllPendingReflows();
|
|
virtual NS_HIDDEN_(PRBool) IsSafeToFlush() const;
|
|
virtual NS_HIDDEN_(void) FlushPendingNotifications(mozFlushType aType);
|
|
|
|
/**
|
|
* Recreates the frames for a node
|
|
*/
|
|
virtual NS_HIDDEN_(nsresult) RecreateFramesFor(nsIContent* aContent);
|
|
|
|
/**
|
|
* Post a callback that should be handled after reflow has finished.
|
|
*/
|
|
virtual NS_HIDDEN_(nsresult) PostReflowCallback(nsIReflowCallback* aCallback);
|
|
virtual NS_HIDDEN_(void) CancelReflowCallback(nsIReflowCallback* aCallback);
|
|
|
|
virtual NS_HIDDEN_(void) ClearFrameRefs(nsIFrame* aFrame);
|
|
virtual NS_HIDDEN_(already_AddRefed<nsRenderingContext>) GetReferenceRenderingContext();
|
|
virtual NS_HIDDEN_(nsresult) GoToAnchor(const nsAString& aAnchorName, PRBool aScroll);
|
|
virtual NS_HIDDEN_(nsresult) ScrollToAnchor();
|
|
|
|
virtual NS_HIDDEN_(nsresult) ScrollContentIntoView(nsIContent* aContent,
|
|
PRIntn aVPercent,
|
|
PRIntn aHPercent,
|
|
PRUint32 aFlags);
|
|
virtual PRBool ScrollFrameRectIntoView(nsIFrame* aFrame,
|
|
const nsRect& aRect,
|
|
PRIntn aVPercent,
|
|
PRIntn aHPercent,
|
|
PRUint32 aFlags);
|
|
virtual nsRectVisibility GetRectVisibility(nsIFrame *aFrame,
|
|
const nsRect &aRect,
|
|
nscoord aMinTwips) const;
|
|
|
|
virtual NS_HIDDEN_(void) SetIgnoreFrameDestruction(PRBool aIgnore);
|
|
virtual NS_HIDDEN_(void) NotifyDestroyingFrame(nsIFrame* aFrame);
|
|
|
|
virtual NS_HIDDEN_(nsresult) GetLinkLocation(nsIDOMNode* aNode, nsAString& aLocationString) const;
|
|
|
|
virtual NS_HIDDEN_(nsresult) CaptureHistoryState(nsILayoutHistoryState** aLayoutHistoryState, PRBool aLeavingPage);
|
|
|
|
virtual NS_HIDDEN_(void) UnsuppressPainting();
|
|
|
|
virtual nsresult GetAgentStyleSheets(nsCOMArray<nsIStyleSheet>& aSheets);
|
|
virtual nsresult SetAgentStyleSheets(const nsCOMArray<nsIStyleSheet>& aSheets);
|
|
|
|
virtual nsresult AddOverrideStyleSheet(nsIStyleSheet *aSheet);
|
|
virtual nsresult RemoveOverrideStyleSheet(nsIStyleSheet *aSheet);
|
|
|
|
virtual NS_HIDDEN_(nsresult) HandleEventWithTarget(nsEvent* aEvent, nsIFrame* aFrame,
|
|
nsIContent* aContent,
|
|
nsEventStatus* aStatus);
|
|
virtual NS_HIDDEN_(nsIFrame*) GetEventTargetFrame();
|
|
virtual NS_HIDDEN_(already_AddRefed<nsIContent>) GetEventTargetContent(nsEvent* aEvent);
|
|
|
|
|
|
virtual nsresult ReconstructFrames(void);
|
|
virtual void Freeze();
|
|
virtual void Thaw();
|
|
virtual void FireOrClearDelayedEvents(PRBool aFireEvents);
|
|
|
|
virtual nsIFrame* GetFrameForPoint(nsIFrame* aFrame, nsPoint aPt);
|
|
|
|
virtual NS_HIDDEN_(nsresult) RenderDocument(const nsRect& aRect, PRUint32 aFlags,
|
|
nscolor aBackgroundColor,
|
|
gfxContext* aThebesContext);
|
|
|
|
virtual already_AddRefed<gfxASurface> RenderNode(nsIDOMNode* aNode,
|
|
nsIntRegion* aRegion,
|
|
nsIntPoint& aPoint,
|
|
nsIntRect* aScreenRect);
|
|
|
|
virtual already_AddRefed<gfxASurface> RenderSelection(nsISelection* aSelection,
|
|
nsIntPoint& aPoint,
|
|
nsIntRect* aScreenRect);
|
|
|
|
virtual already_AddRefed<nsPIDOMWindow> GetRootWindow();
|
|
|
|
virtual LayerManager* GetLayerManager();
|
|
|
|
virtual void SetIgnoreViewportScrolling(PRBool aIgnore);
|
|
|
|
virtual void SetDisplayPort(const nsRect& aDisplayPort);
|
|
|
|
virtual nsresult SetResolution(float aXResolution, float aYResolution);
|
|
|
|
//nsIViewObserver interface
|
|
|
|
NS_IMETHOD Paint(nsIView* aViewToPaint,
|
|
nsIWidget* aWidget,
|
|
const nsRegion& aDirtyRegion,
|
|
const nsIntRegion& aIntDirtyRegion,
|
|
PRBool aPaintDefaultBackground,
|
|
PRBool aWillSendDidPaint);
|
|
NS_IMETHOD HandleEvent(nsIView* aView,
|
|
nsGUIEvent* aEvent,
|
|
PRBool aDontRetargetEvents,
|
|
nsEventStatus* aEventStatus);
|
|
virtual NS_HIDDEN_(nsresult) HandleDOMEventWithTarget(nsIContent* aTargetContent,
|
|
nsEvent* aEvent,
|
|
nsEventStatus* aStatus);
|
|
virtual NS_HIDDEN_(nsresult) HandleDOMEventWithTarget(nsIContent* aTargetContent,
|
|
nsIDOMEvent* aEvent,
|
|
nsEventStatus* aStatus);
|
|
NS_IMETHOD ResizeReflow(nsIView *aView, nscoord aWidth, nscoord aHeight);
|
|
NS_IMETHOD_(PRBool) ShouldIgnoreInvalidation();
|
|
NS_IMETHOD_(void) WillPaint(PRBool aWillSendDidPaint);
|
|
NS_IMETHOD_(void) DidPaint();
|
|
NS_IMETHOD_(void) DispatchSynthMouseMove(nsGUIEvent *aEvent,
|
|
PRBool aFlushOnHoverChange);
|
|
NS_IMETHOD_(void) ClearMouseCapture(nsIView* aView);
|
|
|
|
// caret handling
|
|
virtual NS_HIDDEN_(already_AddRefed<nsCaret>) GetCaret() const;
|
|
virtual NS_HIDDEN_(void) MaybeInvalidateCaretPosition();
|
|
NS_IMETHOD SetCaretEnabled(PRBool aInEnable);
|
|
NS_IMETHOD SetCaretReadOnly(PRBool aReadOnly);
|
|
NS_IMETHOD GetCaretEnabled(PRBool *aOutEnabled);
|
|
NS_IMETHOD SetCaretVisibilityDuringSelection(PRBool aVisibility);
|
|
NS_IMETHOD GetCaretVisible(PRBool *_retval);
|
|
virtual void SetCaret(nsCaret *aNewCaret);
|
|
virtual void RestoreCaret();
|
|
|
|
NS_IMETHOD SetSelectionFlags(PRInt16 aInEnable);
|
|
NS_IMETHOD GetSelectionFlags(PRInt16 *aOutEnable);
|
|
|
|
// nsISelectionController
|
|
|
|
NS_IMETHOD CharacterMove(PRBool aForward, PRBool aExtend);
|
|
NS_IMETHOD CharacterExtendForDelete();
|
|
NS_IMETHOD CharacterExtendForBackspace();
|
|
NS_IMETHOD WordMove(PRBool aForward, PRBool aExtend);
|
|
NS_IMETHOD WordExtendForDelete(PRBool aForward);
|
|
NS_IMETHOD LineMove(PRBool aForward, PRBool aExtend);
|
|
NS_IMETHOD IntraLineMove(PRBool aForward, PRBool aExtend);
|
|
NS_IMETHOD PageMove(PRBool aForward, PRBool aExtend);
|
|
NS_IMETHOD ScrollPage(PRBool aForward);
|
|
NS_IMETHOD ScrollLine(PRBool aForward);
|
|
NS_IMETHOD ScrollHorizontal(PRBool aLeft);
|
|
NS_IMETHOD CompleteScroll(PRBool aForward);
|
|
NS_IMETHOD CompleteMove(PRBool aForward, PRBool aExtend);
|
|
NS_IMETHOD SelectAll();
|
|
NS_IMETHOD CheckVisibility(nsIDOMNode *node, PRInt16 startOffset, PRInt16 EndOffset, PRBool *_retval);
|
|
|
|
// nsIDocumentObserver
|
|
NS_DECL_NSIDOCUMENTOBSERVER_BEGINUPDATE
|
|
NS_DECL_NSIDOCUMENTOBSERVER_ENDUPDATE
|
|
NS_DECL_NSIDOCUMENTOBSERVER_BEGINLOAD
|
|
NS_DECL_NSIDOCUMENTOBSERVER_ENDLOAD
|
|
NS_DECL_NSIDOCUMENTOBSERVER_CONTENTSTATECHANGED
|
|
NS_DECL_NSIDOCUMENTOBSERVER_DOCUMENTSTATESCHANGED
|
|
NS_DECL_NSIDOCUMENTOBSERVER_STYLESHEETADDED
|
|
NS_DECL_NSIDOCUMENTOBSERVER_STYLESHEETREMOVED
|
|
NS_DECL_NSIDOCUMENTOBSERVER_STYLESHEETAPPLICABLESTATECHANGED
|
|
NS_DECL_NSIDOCUMENTOBSERVER_STYLERULECHANGED
|
|
NS_DECL_NSIDOCUMENTOBSERVER_STYLERULEADDED
|
|
NS_DECL_NSIDOCUMENTOBSERVER_STYLERULEREMOVED
|
|
|
|
// nsIMutationObserver
|
|
NS_DECL_NSIMUTATIONOBSERVER_CHARACTERDATACHANGED
|
|
NS_DECL_NSIMUTATIONOBSERVER_ATTRIBUTEWILLCHANGE
|
|
NS_DECL_NSIMUTATIONOBSERVER_ATTRIBUTECHANGED
|
|
NS_DECL_NSIMUTATIONOBSERVER_CONTENTAPPENDED
|
|
NS_DECL_NSIMUTATIONOBSERVER_CONTENTINSERTED
|
|
NS_DECL_NSIMUTATIONOBSERVER_CONTENTREMOVED
|
|
|
|
NS_DECL_NSIOBSERVER
|
|
|
|
#ifdef MOZ_REFLOW_PERF
|
|
virtual NS_HIDDEN_(void) DumpReflows();
|
|
virtual NS_HIDDEN_(void) CountReflows(const char * aName, nsIFrame * aFrame);
|
|
virtual NS_HIDDEN_(void) PaintCount(const char * aName,
|
|
nsRenderingContext* aRenderingContext,
|
|
nsPresContext* aPresContext,
|
|
nsIFrame * aFrame,
|
|
const nsPoint& aOffset,
|
|
PRUint32 aColor);
|
|
virtual NS_HIDDEN_(void) SetPaintFrameCount(PRBool aOn);
|
|
virtual PRBool IsPaintingFrameCounts();
|
|
#endif
|
|
|
|
#ifdef DEBUG
|
|
virtual void ListStyleContexts(nsIFrame *aRootFrame, FILE *out,
|
|
PRInt32 aIndent = 0);
|
|
|
|
virtual void ListStyleSheets(FILE *out, PRInt32 aIndent = 0);
|
|
virtual void VerifyStyleTree();
|
|
#endif
|
|
|
|
#ifdef PR_LOGGING
|
|
static PRLogModuleInfo* gLog;
|
|
#endif
|
|
|
|
virtual NS_HIDDEN_(void) DisableNonTestMouseEvents(PRBool aDisable);
|
|
|
|
virtual void UpdateCanvasBackground();
|
|
|
|
virtual nsresult AddCanvasBackgroundColorItem(nsDisplayListBuilder& aBuilder,
|
|
nsDisplayList& aList,
|
|
nsIFrame* aFrame,
|
|
const nsRect& aBounds,
|
|
nscolor aBackstopColor,
|
|
PRUint32 aFlags);
|
|
|
|
virtual nsresult AddPrintPreviewBackgroundItem(nsDisplayListBuilder& aBuilder,
|
|
nsDisplayList& aList,
|
|
nsIFrame* aFrame,
|
|
const nsRect& aBounds);
|
|
|
|
virtual nscolor ComputeBackstopColor(nsIView* aDisplayRoot);
|
|
|
|
virtual NS_HIDDEN_(nsresult) SetIsActive(PRBool aIsActive);
|
|
|
|
virtual PRBool GetIsViewportOverridden() { return mViewportOverridden; }
|
|
|
|
virtual PRBool IsLayoutFlushObserver()
|
|
{
|
|
return GetPresContext()->RefreshDriver()->
|
|
IsLayoutFlushObserver(this);
|
|
}
|
|
|
|
protected:
|
|
virtual ~PresShell();
|
|
|
|
void HandlePostedReflowCallbacks(PRBool aInterruptible);
|
|
void CancelPostedReflowCallbacks();
|
|
|
|
void UnsuppressAndInvalidate();
|
|
|
|
void WillCauseReflow() {
|
|
nsContentUtils::AddScriptBlocker();
|
|
++mChangeNestCount;
|
|
}
|
|
nsresult DidCauseReflow();
|
|
friend class nsAutoCauseReflowNotifier;
|
|
|
|
void WillDoReflow();
|
|
void DidDoReflow(PRBool aInterruptible);
|
|
// ProcessReflowCommands returns whether we processed all our dirty roots
|
|
// without interruptions.
|
|
PRBool ProcessReflowCommands(PRBool aInterruptible);
|
|
// MaybeScheduleReflow checks if posting a reflow is needed, then checks if
|
|
// the last reflow was interrupted. In the interrupted case ScheduleReflow is
|
|
// called off a timer, otherwise it is called directly.
|
|
void MaybeScheduleReflow();
|
|
// Actually schedules a reflow. This should only be called by
|
|
// MaybeScheduleReflow and the reflow timer ScheduleReflowOffTimer
|
|
// sets up.
|
|
void ScheduleReflow();
|
|
|
|
// Reflow regardless of whether the override bit has been set.
|
|
nsresult ResizeReflowIgnoreOverride(nscoord aWidth, nscoord aHeight);
|
|
|
|
// DoReflow returns whether the reflow finished without interruption
|
|
PRBool DoReflow(nsIFrame* aFrame, PRBool aInterruptible);
|
|
#ifdef DEBUG
|
|
void DoVerifyReflow();
|
|
void VerifyHasDirtyRootAncestor(nsIFrame* aFrame);
|
|
#endif
|
|
|
|
// Helper for ScrollContentIntoView
|
|
void DoScrollContentIntoView(nsIContent* aContent,
|
|
PRIntn aVPercent,
|
|
PRIntn aHPercent,
|
|
PRUint32 aFlags);
|
|
|
|
friend struct AutoRenderingStateSaveRestore;
|
|
friend struct RenderingState;
|
|
|
|
struct RenderingState {
|
|
RenderingState(PresShell* aPresShell)
|
|
: mRenderFlags(aPresShell->mRenderFlags)
|
|
, mXResolution(aPresShell->mXResolution)
|
|
, mYResolution(aPresShell->mYResolution)
|
|
{ }
|
|
PRUint32 mRenderFlags;
|
|
float mXResolution;
|
|
float mYResolution;
|
|
};
|
|
|
|
struct AutoSaveRestoreRenderingState {
|
|
AutoSaveRestoreRenderingState(PresShell* aPresShell)
|
|
: mPresShell(aPresShell)
|
|
, mOldState(aPresShell)
|
|
{}
|
|
|
|
~AutoSaveRestoreRenderingState()
|
|
{
|
|
mPresShell->mRenderFlags = mOldState.mRenderFlags;
|
|
mPresShell->mXResolution = mOldState.mXResolution;
|
|
mPresShell->mYResolution = mOldState.mYResolution;
|
|
}
|
|
|
|
PresShell* mPresShell;
|
|
RenderingState mOldState;
|
|
};
|
|
|
|
void SetRenderingState(const RenderingState& aState);
|
|
|
|
friend class nsPresShellEventCB;
|
|
|
|
PRBool mCaretEnabled;
|
|
#ifdef NS_DEBUG
|
|
nsresult CloneStyleSet(nsStyleSet* aSet, nsStyleSet** aResult);
|
|
PRBool VerifyIncrementalReflow();
|
|
PRBool mInVerifyReflow;
|
|
void ShowEventTargetDebug();
|
|
#endif
|
|
|
|
/**
|
|
* methods that manage rules that are used to implement the associated preferences
|
|
* - initially created for bugs 31816, 20760, 22963
|
|
*/
|
|
nsresult ClearPreferenceStyleRules(void);
|
|
nsresult CreatePreferenceStyleSheet(void);
|
|
nsresult SetPrefLinkRules(void);
|
|
nsresult SetPrefFocusRules(void);
|
|
nsresult SetPrefNoScriptRule();
|
|
nsresult SetPrefNoFramesRule(void);
|
|
|
|
// methods for painting a range to an offscreen buffer
|
|
|
|
// given a display list, clip the items within the list to
|
|
// the range
|
|
nsRect ClipListToRange(nsDisplayListBuilder *aBuilder,
|
|
nsDisplayList* aList,
|
|
nsIRange* aRange);
|
|
|
|
// create a RangePaintInfo for the range aRange containing the
|
|
// display list needed to paint the range to a surface
|
|
RangePaintInfo* CreateRangePaintInfo(nsIDOMRange* aRange,
|
|
nsRect& aSurfaceRect,
|
|
PRBool aForPrimarySelection);
|
|
|
|
/*
|
|
* Paint the items to a new surface and return it.
|
|
*
|
|
* aSelection - selection being painted, if any
|
|
* aRegion - clip region, if any
|
|
* aArea - area that the surface occupies, relative to the root frame
|
|
* aPoint - reference point, typically the mouse position
|
|
* aScreenRect - [out] set to the area of the screen the painted area should
|
|
* be displayed at
|
|
*/
|
|
already_AddRefed<gfxASurface>
|
|
PaintRangePaintInfo(nsTArray<nsAutoPtr<RangePaintInfo> >* aItems,
|
|
nsISelection* aSelection,
|
|
nsIntRegion* aRegion,
|
|
nsRect aArea,
|
|
nsIntPoint& aPoint,
|
|
nsIntRect* aScreenRect);
|
|
|
|
/**
|
|
* Methods to handle changes to user and UA sheet lists that we get
|
|
* notified about.
|
|
*/
|
|
void AddUserSheet(nsISupports* aSheet);
|
|
void AddAgentSheet(nsISupports* aSheet);
|
|
void RemoveSheet(nsStyleSet::sheetType aType, nsISupports* aSheet);
|
|
|
|
// Hide a view if it is a popup
|
|
void HideViewIfPopup(nsIView* aView);
|
|
|
|
// Utility method to restore the root scrollframe state
|
|
void RestoreRootScrollPosition();
|
|
|
|
void MaybeReleaseCapturingContent()
|
|
{
|
|
nsRefPtr<nsFrameSelection> frameSelection = FrameSelection();
|
|
if (frameSelection) {
|
|
frameSelection->SetMouseDownState(PR_FALSE);
|
|
}
|
|
if (gCaptureInfo.mContent &&
|
|
gCaptureInfo.mContent->GetOwnerDoc() == mDocument) {
|
|
SetCapturingContent(nsnull, 0);
|
|
}
|
|
}
|
|
|
|
nsresult HandleRetargetedEvent(nsEvent* aEvent, nsIView* aView,
|
|
nsEventStatus* aStatus, nsIContent* aTarget)
|
|
{
|
|
PushCurrentEventInfo(nsnull, nsnull);
|
|
mCurrentEventContent = aTarget;
|
|
nsresult rv = NS_OK;
|
|
if (GetCurrentEventFrame()) {
|
|
rv = HandleEventInternal(aEvent, aView, aStatus);
|
|
}
|
|
PopCurrentEventInfo();
|
|
return rv;
|
|
}
|
|
|
|
nsRefPtr<nsCSSStyleSheet> mPrefStyleSheet; // mStyleSet owns it but we
|
|
// maintain a ref, may be null
|
|
#ifdef DEBUG
|
|
PRUint32 mUpdateCount;
|
|
#endif
|
|
// reflow roots that need to be reflowed, as both a queue and a hashtable
|
|
nsTArray<nsIFrame*> mDirtyRoots;
|
|
|
|
PRPackedBool mDocumentLoading;
|
|
|
|
PRPackedBool mIgnoreFrameDestruction;
|
|
PRPackedBool mHaveShutDown;
|
|
|
|
PRPackedBool mViewportOverridden;
|
|
|
|
PRPackedBool mLastRootReflowHadUnconstrainedHeight;
|
|
|
|
// This is used to protect ourselves from triggering reflow while in the
|
|
// middle of frame construction and the like... it really shouldn't be
|
|
// needed, one hopes, but it is for now.
|
|
PRUint32 mChangeNestCount;
|
|
|
|
nsIFrame* mCurrentEventFrame;
|
|
nsCOMPtr<nsIContent> mCurrentEventContent;
|
|
nsTArray<nsIFrame*> mCurrentEventFrameStack;
|
|
nsCOMArray<nsIContent> mCurrentEventContentStack;
|
|
|
|
nsCOMPtr<nsIContent> mLastAnchorScrolledTo;
|
|
nscoord mLastAnchorScrollPositionY;
|
|
nsRefPtr<nsCaret> mCaret;
|
|
nsRefPtr<nsCaret> mOriginalCaret;
|
|
nsPresArena mFrameArena;
|
|
StackArena mStackArena;
|
|
nsCOMPtr<nsIDragService> mDragService;
|
|
|
|
#ifdef DEBUG
|
|
// The reflow root under which we're currently reflowing. Null when
|
|
// not in reflow.
|
|
nsIFrame* mCurrentReflowRoot;
|
|
#endif
|
|
|
|
// Set of frames that we should mark with NS_FRAME_HAS_DIRTY_CHILDREN after
|
|
// we finish reflowing mCurrentReflowRoot.
|
|
nsTHashtable< nsPtrHashKey<nsIFrame> > mFramesToDirty;
|
|
|
|
// Information needed to properly handle scrolling content into view if the
|
|
// pre-scroll reflow flush can be interrupted. mContentToScrollTo is
|
|
// non-null between the initial scroll attempt and the first time we finish
|
|
// processing all our dirty roots. mContentScrollVPosition and
|
|
// mContentScrollHPosition are only used when it's non-null.
|
|
nsCOMPtr<nsIContent> mContentToScrollTo;
|
|
PRIntn mContentScrollVPosition;
|
|
PRIntn mContentScrollHPosition;
|
|
PRUint32 mContentToScrollToFlags;
|
|
|
|
class nsDelayedEvent
|
|
{
|
|
public:
|
|
virtual ~nsDelayedEvent() {};
|
|
virtual void Dispatch(PresShell* aShell) {}
|
|
};
|
|
|
|
class nsDelayedInputEvent : public nsDelayedEvent
|
|
{
|
|
public:
|
|
virtual void Dispatch(PresShell* aShell)
|
|
{
|
|
if (mEvent && mEvent->widget) {
|
|
nsCOMPtr<nsIWidget> w = mEvent->widget;
|
|
nsEventStatus status;
|
|
w->DispatchEvent(mEvent, status);
|
|
}
|
|
}
|
|
|
|
protected:
|
|
void Init(nsInputEvent* aEvent)
|
|
{
|
|
mEvent->time = aEvent->time;
|
|
mEvent->refPoint = aEvent->refPoint;
|
|
mEvent->isShift = aEvent->isShift;
|
|
mEvent->isControl = aEvent->isControl;
|
|
mEvent->isAlt = aEvent->isAlt;
|
|
mEvent->isMeta = aEvent->isMeta;
|
|
}
|
|
|
|
nsDelayedInputEvent()
|
|
: nsDelayedEvent(), mEvent(nsnull) {}
|
|
|
|
nsInputEvent* mEvent;
|
|
};
|
|
|
|
class nsDelayedMouseEvent : public nsDelayedInputEvent
|
|
{
|
|
public:
|
|
nsDelayedMouseEvent(nsMouseEvent* aEvent) : nsDelayedInputEvent()
|
|
{
|
|
mEvent = new nsMouseEvent(NS_IS_TRUSTED_EVENT(aEvent),
|
|
aEvent->message,
|
|
aEvent->widget,
|
|
aEvent->reason,
|
|
aEvent->context);
|
|
if (mEvent) {
|
|
Init(aEvent);
|
|
static_cast<nsMouseEvent*>(mEvent)->clickCount = aEvent->clickCount;
|
|
}
|
|
}
|
|
|
|
virtual ~nsDelayedMouseEvent()
|
|
{
|
|
delete static_cast<nsMouseEvent*>(mEvent);
|
|
}
|
|
};
|
|
|
|
class nsDelayedKeyEvent : public nsDelayedInputEvent
|
|
{
|
|
public:
|
|
nsDelayedKeyEvent(nsKeyEvent* aEvent) : nsDelayedInputEvent()
|
|
{
|
|
mEvent = new nsKeyEvent(NS_IS_TRUSTED_EVENT(aEvent),
|
|
aEvent->message,
|
|
aEvent->widget);
|
|
if (mEvent) {
|
|
Init(aEvent);
|
|
static_cast<nsKeyEvent*>(mEvent)->keyCode = aEvent->keyCode;
|
|
static_cast<nsKeyEvent*>(mEvent)->charCode = aEvent->charCode;
|
|
static_cast<nsKeyEvent*>(mEvent)->alternativeCharCodes =
|
|
aEvent->alternativeCharCodes;
|
|
static_cast<nsKeyEvent*>(mEvent)->isChar = aEvent->isChar;
|
|
}
|
|
}
|
|
|
|
virtual ~nsDelayedKeyEvent()
|
|
{
|
|
delete static_cast<nsKeyEvent*>(mEvent);
|
|
}
|
|
};
|
|
|
|
PRPackedBool mNoDelayedMouseEvents;
|
|
PRPackedBool mNoDelayedKeyEvents;
|
|
nsTArray<nsAutoPtr<nsDelayedEvent> > mDelayedEvents;
|
|
|
|
nsCallbackEventRequest* mFirstCallbackEventRequest;
|
|
nsCallbackEventRequest* mLastCallbackEventRequest;
|
|
|
|
PRPackedBool mIsDocumentGone; // We've been disconnected from the document.
|
|
// We will refuse to paint the document until either
|
|
// (a) our timer fires or (b) all frames are constructed.
|
|
PRPackedBool mShouldUnsuppressPainting; // Indicates that it is safe to unlock painting once all pending
|
|
// reflows have been processed.
|
|
nsCOMPtr<nsITimer> mPaintSuppressionTimer; // This timer controls painting suppression. Until it fires
|
|
// or all frames are constructed, we won't paint anything but
|
|
// our <body> background and scrollbars.
|
|
#define PAINTLOCK_EVENT_DELAY 250 // 250ms. This is actually
|
|
// pref-controlled, but we use this
|
|
// value if we fail to get the pref
|
|
// for any reason.
|
|
|
|
static void sPaintSuppressionCallback(nsITimer* aTimer, void* aPresShell); // A callback for the timer.
|
|
|
|
// At least on Win32 and Mac after interupting a reflow we need to post
|
|
// the resume reflow event off a timer to avoid event starvation because
|
|
// posted messages are processed before other messages when the modal
|
|
// moving/sizing loop is running, see bug 491700 for details.
|
|
nsCOMPtr<nsITimer> mReflowContinueTimer;
|
|
static void sReflowContinueCallback(nsITimer* aTimer, void* aPresShell);
|
|
PRBool ScheduleReflowOffTimer();
|
|
|
|
#ifdef MOZ_REFLOW_PERF
|
|
ReflowCountMgr * mReflowCountMgr;
|
|
#endif
|
|
|
|
static PRBool sDisableNonTestMouseEvents;
|
|
|
|
private:
|
|
|
|
PRBool InZombieDocument(nsIContent *aContent);
|
|
already_AddRefed<nsIPresShell> GetParentPresShell();
|
|
nsresult RetargetEventToParent(nsGUIEvent* aEvent,
|
|
nsEventStatus* aEventStatus);
|
|
|
|
//helper funcs for event handling
|
|
protected:
|
|
//protected because nsPresShellEventCB needs this.
|
|
nsIFrame* GetCurrentEventFrame();
|
|
private:
|
|
void PushCurrentEventInfo(nsIFrame* aFrame, nsIContent* aContent);
|
|
void PopCurrentEventInfo();
|
|
nsresult HandleEventInternal(nsEvent* aEvent, nsIView* aView,
|
|
nsEventStatus *aStatus);
|
|
nsresult HandlePositionedEvent(nsIView* aView,
|
|
nsIFrame* aTargetFrame,
|
|
nsGUIEvent* aEvent,
|
|
nsEventStatus* aEventStatus);
|
|
// This returns the focused DOM window under our top level window.
|
|
// I.e., when we are deactive, this returns the *last* focused DOM window.
|
|
already_AddRefed<nsPIDOMWindow> GetFocusedDOMWindowInOurWindow();
|
|
|
|
/*
|
|
* This and the next two helper methods are used to target and position the
|
|
* context menu when the keyboard shortcut is used to open it.
|
|
*
|
|
* If another menu is open, the context menu is opened relative to the
|
|
* active menuitem within the menu, or the menu itself if no item is active.
|
|
* Otherwise, if the caret is visible, the menu is opened near the caret.
|
|
* Otherwise, if a selectable list such as a listbox is focused, the
|
|
* current item within the menu is opened relative to this item.
|
|
* Otherwise, the context menu is opened at the topleft corner of the
|
|
* view.
|
|
*
|
|
* Returns true if the context menu event should fire and false if it should
|
|
* not.
|
|
*/
|
|
PRBool AdjustContextMenuKeyEvent(nsMouseEvent* aEvent);
|
|
|
|
//
|
|
PRBool PrepareToUseCaretPosition(nsIWidget* aEventWidget, nsIntPoint& aTargetPt);
|
|
|
|
// Get the selected item and coordinates in device pixels relative to root
|
|
// document's root view for element, first ensuring the element is onscreen
|
|
void GetCurrentItemAndPositionForElement(nsIDOMElement *aCurrentEl,
|
|
nsIContent **aTargetToUse,
|
|
nsIntPoint& aTargetPt,
|
|
nsIWidget *aRootWidget);
|
|
|
|
void FireResizeEvent();
|
|
void FireBeforeResizeEvent();
|
|
static void AsyncResizeEventCallback(nsITimer* aTimer, void* aPresShell);
|
|
nsRevocableEventPtr<nsRunnableMethod<PresShell> > mResizeEvent;
|
|
nsCOMPtr<nsITimer> mAsyncResizeEventTimer;
|
|
PRPackedBool mAsyncResizeTimerIsActive;
|
|
PRPackedBool mInResize;
|
|
|
|
virtual void SynthesizeMouseMove(PRBool aFromScroll);
|
|
|
|
// Check if aEvent is a mouse event and record the mouse location for later
|
|
// synth mouse moves.
|
|
void RecordMouseLocation(nsGUIEvent* aEvent);
|
|
// This is used for synthetic mouse events that are sent when what is under
|
|
// the mouse pointer may have changed without the mouse moving (eg scrolling,
|
|
// change to the document contents).
|
|
// It is set only on a presshell for a root document, this value represents
|
|
// the last observed location of the mouse relative to that root document. It
|
|
// is set to (NS_UNCONSTRAINEDSIZE, NS_UNCONSTRAINEDSIZE) if the mouse isn't
|
|
// over our window or there is no last observed mouse location for some
|
|
// reason.
|
|
nsPoint mMouseLocation;
|
|
class nsSynthMouseMoveEvent : public nsRunnable {
|
|
public:
|
|
nsSynthMouseMoveEvent(PresShell* aPresShell, PRBool aFromScroll)
|
|
: mPresShell(aPresShell), mFromScroll(aFromScroll) {
|
|
NS_ASSERTION(mPresShell, "null parameter");
|
|
}
|
|
void Revoke() { mPresShell = nsnull; }
|
|
NS_IMETHOD Run() {
|
|
if (mPresShell)
|
|
mPresShell->ProcessSynthMouseMoveEvent(mFromScroll);
|
|
return NS_OK;
|
|
}
|
|
private:
|
|
PresShell* mPresShell;
|
|
PRBool mFromScroll;
|
|
};
|
|
nsRevocableEventPtr<nsSynthMouseMoveEvent> mSynthMouseMoveEvent;
|
|
void ProcessSynthMouseMoveEvent(PRBool aFromScroll);
|
|
|
|
PresShell* GetRootPresShell();
|
|
|
|
private:
|
|
#ifdef DEBUG
|
|
// Ensure that every allocation from the PresArena is eventually freed.
|
|
PRUint32 mPresArenaAllocCount;
|
|
#endif
|
|
|
|
public:
|
|
|
|
PRUint32 EstimateMemoryUsed() {
|
|
PRUint32 result = 0;
|
|
|
|
result += sizeof(PresShell);
|
|
result += mStackArena.Size();
|
|
result += mFrameArena.Size();
|
|
|
|
return result;
|
|
}
|
|
|
|
static PLDHashOperator LiveShellSizeEnumerator(PresShellPtrKey *aEntry,
|
|
void *userArg)
|
|
{
|
|
PresShell *aShell = static_cast<PresShell*>(aEntry->GetKey());
|
|
PRUint32 *val = (PRUint32*)userArg;
|
|
*val += aShell->EstimateMemoryUsed();
|
|
*val += aShell->mPresContext->EstimateMemoryUsed();
|
|
return PL_DHASH_NEXT;
|
|
}
|
|
|
|
static PLDHashOperator LiveShellBidiSizeEnumerator(PresShellPtrKey *aEntry,
|
|
void *userArg)
|
|
{
|
|
PresShell *aShell = static_cast<PresShell*>(aEntry->GetKey());
|
|
PRUint32 *val = (PRUint32*)userArg;
|
|
*val += aShell->mPresContext->GetBidiMemoryUsed();
|
|
return PL_DHASH_NEXT;
|
|
}
|
|
|
|
static PRUint32
|
|
EstimateShellsMemory(nsTHashtable<PresShellPtrKey>::Enumerator aEnumerator)
|
|
{
|
|
PRUint32 result = 0;
|
|
sLiveShells->EnumerateEntries(aEnumerator, &result);
|
|
return result;
|
|
}
|
|
|
|
|
|
static PRInt64 SizeOfLayoutMemoryReporter(void *) {
|
|
return EstimateShellsMemory(LiveShellSizeEnumerator);
|
|
}
|
|
|
|
static PRInt64 SizeOfBidiMemoryReporter(void *) {
|
|
return EstimateShellsMemory(LiveShellBidiSizeEnumerator);
|
|
}
|
|
|
|
protected:
|
|
void QueryIsActive();
|
|
nsresult UpdateImageLockingState();
|
|
};
|
|
|
|
class nsAutoCauseReflowNotifier
|
|
{
|
|
public:
|
|
nsAutoCauseReflowNotifier(PresShell* aShell)
|
|
: mShell(aShell)
|
|
{
|
|
mShell->WillCauseReflow();
|
|
}
|
|
~nsAutoCauseReflowNotifier()
|
|
{
|
|
// This check should not be needed. Currently the only place that seem
|
|
// to need it is the code that deals with bug 337586.
|
|
if (!mShell->mHaveShutDown) {
|
|
mShell->DidCauseReflow();
|
|
}
|
|
else {
|
|
nsContentUtils::RemoveScriptBlocker();
|
|
}
|
|
}
|
|
|
|
PresShell* mShell;
|
|
};
|
|
|
|
class NS_STACK_CLASS nsPresShellEventCB : public nsDispatchingCallback
|
|
{
|
|
public:
|
|
nsPresShellEventCB(PresShell* aPresShell) : mPresShell(aPresShell) {}
|
|
|
|
virtual void HandleEvent(nsEventChainPostVisitor& aVisitor)
|
|
{
|
|
if (aVisitor.mPresContext && aVisitor.mEvent->eventStructType != NS_EVENT) {
|
|
nsIFrame* frame = mPresShell->GetCurrentEventFrame();
|
|
if (frame) {
|
|
frame->HandleEvent(aVisitor.mPresContext,
|
|
(nsGUIEvent*) aVisitor.mEvent,
|
|
&aVisitor.mEventStatus);
|
|
}
|
|
}
|
|
}
|
|
|
|
nsRefPtr<PresShell> mPresShell;
|
|
};
|
|
|
|
PRBool PresShell::sDisableNonTestMouseEvents = PR_FALSE;
|
|
|
|
#ifdef PR_LOGGING
|
|
PRLogModuleInfo* PresShell::gLog;
|
|
#endif
|
|
|
|
#ifdef NS_DEBUG
|
|
static void
|
|
VerifyStyleTree(nsPresContext* aPresContext, nsFrameManager* aFrameManager)
|
|
{
|
|
if (nsFrame::GetVerifyStyleTreeEnable()) {
|
|
nsIFrame* rootFrame = aFrameManager->GetRootFrame();
|
|
aFrameManager->DebugVerifyStyleTree(rootFrame);
|
|
}
|
|
}
|
|
#define VERIFY_STYLE_TREE ::VerifyStyleTree(mPresContext, FrameManager())
|
|
#else
|
|
#define VERIFY_STYLE_TREE
|
|
#endif
|
|
|
|
static PRBool gVerifyReflowEnabled;
|
|
|
|
PRBool
|
|
nsIPresShell::GetVerifyReflowEnable()
|
|
{
|
|
#ifdef NS_DEBUG
|
|
static PRBool firstTime = PR_TRUE;
|
|
if (firstTime) {
|
|
firstTime = PR_FALSE;
|
|
char* flags = PR_GetEnv("GECKO_VERIFY_REFLOW_FLAGS");
|
|
if (flags) {
|
|
PRBool error = PR_FALSE;
|
|
|
|
for (;;) {
|
|
char* comma = PL_strchr(flags, ',');
|
|
if (comma)
|
|
*comma = '\0';
|
|
|
|
PRBool found = PR_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 = PR_TRUE;
|
|
break;
|
|
}
|
|
++flag;
|
|
}
|
|
|
|
if (! found)
|
|
error = PR_TRUE;
|
|
|
|
if (! comma)
|
|
break;
|
|
|
|
*comma = ',';
|
|
flags = comma + 1;
|
|
}
|
|
|
|
if (error)
|
|
ShowVerifyReflowFlags();
|
|
}
|
|
|
|
if (VERIFY_REFLOW_ON & gVerifyReflowFlags) {
|
|
gVerifyReflowEnabled = PR_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
|
|
nsIPresShell::SetVerifyReflowEnable(PRBool 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()
|
|
{
|
|
NS_IF_ADDREF(mSelection);
|
|
return mSelection;
|
|
}
|
|
|
|
//----------------------------------------------------------------------
|
|
|
|
nsresult
|
|
NS_NewPresShell(nsIPresShell** aInstancePtrResult)
|
|
{
|
|
NS_PRECONDITION(nsnull != aInstancePtrResult, "null ptr");
|
|
|
|
if (!aInstancePtrResult)
|
|
return NS_ERROR_NULL_POINTER;
|
|
|
|
*aInstancePtrResult = new PresShell();
|
|
if (!*aInstancePtrResult)
|
|
return NS_ERROR_OUT_OF_MEMORY;
|
|
|
|
NS_ADDREF(*aInstancePtrResult);
|
|
return NS_OK;
|
|
}
|
|
|
|
nsTHashtable<PresShell::PresShellPtrKey> *nsIPresShell::sLiveShells = 0;
|
|
static PRBool sSynthMouseMove = PR_TRUE;
|
|
|
|
NS_MEMORY_REPORTER_IMPLEMENT(LayoutPresShell,
|
|
"explicit/layout/all",
|
|
MR_HEAP,
|
|
"Memory used by layout PresShell, PresContext, and other related areas.",
|
|
PresShell::SizeOfLayoutMemoryReporter,
|
|
nsnull)
|
|
|
|
NS_MEMORY_REPORTER_IMPLEMENT(LayoutBidi,
|
|
"explicit/layout/bidi",
|
|
MR_HEAP,
|
|
"Memory used by layout Bidi processor.",
|
|
PresShell::SizeOfBidiMemoryReporter,
|
|
nsnull)
|
|
|
|
PresShell::PresShell()
|
|
: mMouseLocation(NS_UNCONSTRAINEDSIZE, NS_UNCONSTRAINEDSIZE)
|
|
{
|
|
mSelection = nsnull;
|
|
#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 = PR_FALSE;
|
|
mIsActive = PR_TRUE;
|
|
mFrozen = PR_FALSE;
|
|
#ifdef DEBUG
|
|
mPresArenaAllocCount = 0;
|
|
#endif
|
|
mRenderFlags = 0;
|
|
mXResolution = 1.0;
|
|
mYResolution = 1.0;
|
|
mViewportOverridden = PR_FALSE;
|
|
|
|
static bool registeredReporter = false;
|
|
if (!registeredReporter) {
|
|
NS_RegisterMemoryReporter(new NS_MEMORY_REPORTER_NAME(LayoutPresShell));
|
|
NS_RegisterMemoryReporter(new NS_MEMORY_REPORTER_NAME(LayoutBidi));
|
|
Preferences::AddBoolVarCache(&sSynthMouseMove,
|
|
"layout.reflow.synthMouseMove", PR_TRUE);
|
|
registeredReporter = true;
|
|
}
|
|
|
|
new (this) nsFrameManager();
|
|
|
|
sLiveShells->PutEntry(this);
|
|
}
|
|
|
|
NS_IMPL_ISUPPORTS8(PresShell, nsIPresShell, nsIDocumentObserver,
|
|
nsIViewObserver, nsISelectionController,
|
|
nsISelectionDisplay, nsIObserver, nsISupportsWeakReference,
|
|
nsIMutationObserver)
|
|
|
|
PresShell::~PresShell()
|
|
{
|
|
sLiveShells->RemoveEntry(this);
|
|
|
|
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 == nsnull &&
|
|
mLastCallbackEventRequest == nsnull,
|
|
"post-reflow queues not empty. This means we're leaking");
|
|
|
|
#ifdef DEBUG
|
|
NS_ASSERTION(mPresArenaAllocCount == 0,
|
|
"Some pres arena objects were not freed");
|
|
#endif
|
|
|
|
delete mStyleSet;
|
|
delete mFrameConstructor;
|
|
|
|
mCurrentEventContent = nsnull;
|
|
|
|
NS_IF_RELEASE(mPresContext);
|
|
NS_IF_RELEASE(mDocument);
|
|
NS_IF_RELEASE(mSelection);
|
|
}
|
|
|
|
/**
|
|
* Initialize the presentation shell. Create view manager and style
|
|
* manager.
|
|
*/
|
|
nsresult
|
|
PresShell::Init(nsIDocument* aDocument,
|
|
nsPresContext* aPresContext,
|
|
nsIViewManager* aViewManager,
|
|
nsStyleSet* aStyleSet,
|
|
nsCompatibility aCompatMode)
|
|
{
|
|
NS_TIME_FUNCTION_MIN(1.0);
|
|
|
|
NS_PRECONDITION(nsnull != aDocument, "null ptr");
|
|
NS_PRECONDITION(nsnull != aPresContext, "null ptr");
|
|
NS_PRECONDITION(nsnull != aViewManager, "null ptr");
|
|
nsresult result;
|
|
|
|
if ((nsnull == aDocument) || (nsnull == aPresContext) ||
|
|
(nsnull == aViewManager)) {
|
|
return NS_ERROR_NULL_POINTER;
|
|
}
|
|
if (mDocument) {
|
|
NS_WARNING("PresShell double init'ed");
|
|
return NS_ERROR_ALREADY_INITIALIZED;
|
|
}
|
|
result = mStackArena.Init();
|
|
NS_ENSURE_SUCCESS(result, result);
|
|
|
|
if (!mFramesToDirty.Init()) {
|
|
return NS_ERROR_OUT_OF_MEMORY;
|
|
}
|
|
|
|
mDocument = aDocument;
|
|
NS_ADDREF(mDocument);
|
|
mViewManager = aViewManager;
|
|
|
|
// Create our frame constructor.
|
|
mFrameConstructor = new nsCSSFrameConstructor(mDocument, this);
|
|
NS_ENSURE_TRUE(mFrameConstructor, NS_ERROR_OUT_OF_MEMORY);
|
|
|
|
// The document viewer owns both view manager and pres shell.
|
|
mViewManager->SetViewObserver(this);
|
|
|
|
// Bind the context to the presentation shell.
|
|
mPresContext = aPresContext;
|
|
NS_ADDREF(mPresContext);
|
|
aPresContext->SetShell(this);
|
|
|
|
// Now we can initialize the style set.
|
|
result = aStyleSet->Init(aPresContext);
|
|
NS_ENSURE_SUCCESS(result, result);
|
|
|
|
// From this point on, any time we return an error we need to make
|
|
// sure to null out mStyleSet first, since an error return from this
|
|
// method will cause the caller to delete the style set, so we don't
|
|
// want to delete it in our destructor.
|
|
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(PR_FALSE);
|
|
|
|
NS_ADDREF(mSelection = new nsFrameSelection());
|
|
|
|
// Create and initialize the frame manager
|
|
result = FrameManager()->Init(this, mStyleSet);
|
|
if (NS_FAILED(result)) {
|
|
NS_WARNING("Frame manager initialization failed");
|
|
mStyleSet = nsnull;
|
|
return result;
|
|
}
|
|
|
|
mSelection->Init(this, nsnull);
|
|
|
|
// 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(PR_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", PR_FALSE);
|
|
os->AddObserver(this, "user-sheet-added", PR_FALSE);
|
|
os->AddObserver(this, "agent-sheet-removed", PR_FALSE);
|
|
os->AddObserver(this, "user-sheet-removed", PR_FALSE);
|
|
#ifdef MOZ_XUL
|
|
os->AddObserver(this, "chrome-flush-skin-caches", PR_FALSE);
|
|
#endif
|
|
#ifdef ACCESSIBILITY
|
|
os->AddObserver(this, "a11y-init-or-shutdown", PR_FALSE);
|
|
#endif
|
|
}
|
|
}
|
|
|
|
// cache the drag service so we can check it during reflows
|
|
mDragService = do_GetService("@mozilla.org/widget/dragservice;1");
|
|
|
|
#ifdef MOZ_REFLOW_PERF
|
|
if (mReflowCountMgr) {
|
|
PRBool paintFrameCounts =
|
|
Preferences::GetBool("layout.reflow.showframecounts");
|
|
|
|
PRBool dumpFrameCounts =
|
|
Preferences::GetBool("layout.reflow.dumpframecounts");
|
|
|
|
PRBool dumpFrameByFrameCounts =
|
|
Preferences::GetBool("layout.reflow.dumpframebyframecounts");
|
|
|
|
mReflowCountMgr->SetDumpFrameCounts(dumpFrameCounts);
|
|
mReflowCountMgr->SetDumpFrameByFrameCounts(dumpFrameByFrameCounts);
|
|
mReflowCountMgr->SetPaintFrameCounts(paintFrameCounts);
|
|
}
|
|
#endif
|
|
|
|
#ifdef MOZ_SMIL
|
|
if (mDocument->HasAnimationController()) {
|
|
nsSMILAnimationController* animCtrl = mDocument->GetAnimationController();
|
|
animCtrl->NotifyRefreshDriverCreated(GetPresContext()->RefreshDriver());
|
|
}
|
|
#endif // MOZ_SMIL
|
|
|
|
// Get our activeness from the docShell.
|
|
QueryIsActive();
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
void
|
|
PresShell::Destroy()
|
|
{
|
|
NS_TIME_FUNCTION_MIN(1.0);
|
|
|
|
NS_ASSERTION(!nsContentUtils::IsSafeToRunScript(),
|
|
"destroy called on presshell while scripts not blocked");
|
|
|
|
#ifdef MOZ_REFLOW_PERF
|
|
DumpReflows();
|
|
if (mReflowCountMgr) {
|
|
delete mReflowCountMgr;
|
|
mReflowCountMgr = nsnull;
|
|
}
|
|
#endif
|
|
|
|
if (mHaveShutDown)
|
|
return;
|
|
|
|
#ifdef ACCESSIBILITY
|
|
nsAccessibilityService* accService = AccService();
|
|
if (accService) {
|
|
accService->PresShellDestroyed(this);
|
|
}
|
|
#endif // ACCESSIBILITY
|
|
|
|
MaybeReleaseCapturingContent();
|
|
|
|
if (gKeyDownTarget && gKeyDownTarget->GetOwnerDoc() == mDocument) {
|
|
NS_RELEASE(gKeyDownTarget);
|
|
}
|
|
|
|
mContentToScrollTo = nsnull;
|
|
|
|
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, "agent-sheet-removed");
|
|
os->RemoveObserver(this, "user-sheet-removed");
|
|
#ifdef MOZ_XUL
|
|
os->RemoveObserver(this, "chrome-flush-skin-caches");
|
|
#endif
|
|
#ifdef ACCESSIBILITY
|
|
os->RemoveObserver(this, "a11y-init-or-shutdown");
|
|
#endif
|
|
}
|
|
}
|
|
|
|
// If our paint suppression timer is still active, kill it.
|
|
if (mPaintSuppressionTimer) {
|
|
mPaintSuppressionTimer->Cancel();
|
|
mPaintSuppressionTimer = nsnull;
|
|
}
|
|
|
|
// Same for our reflow continuation timer
|
|
if (mReflowContinueTimer) {
|
|
mReflowContinueTimer->Cancel();
|
|
mReflowContinueTimer = nsnull;
|
|
}
|
|
|
|
mSynthMouseMoveEvent.Revoke();
|
|
|
|
if (mCaret) {
|
|
mCaret->Terminate();
|
|
mCaret = nsnull;
|
|
}
|
|
|
|
if (mSelection) {
|
|
mSelection->DisconnectFromPresShell();
|
|
}
|
|
|
|
// release our pref style sheet, if we have one still
|
|
ClearPreferenceStyleRules();
|
|
|
|
mIsDestroying = PR_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 = nsnull;
|
|
|
|
PRInt32 i, count = mCurrentEventFrameStack.Length();
|
|
for (i = 0; i < count; i++) {
|
|
mCurrentEventFrameStack[i] = nsnull;
|
|
}
|
|
|
|
mFramesToDirty.Clear();
|
|
|
|
if (mViewManager) {
|
|
// Clear the view manager's weak pointer back to |this| in case it
|
|
// was leaked.
|
|
mViewManager->SetViewObserver(nsnull);
|
|
mViewManager = nsnull;
|
|
}
|
|
|
|
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();
|
|
|
|
#ifdef MOZ_SMIL
|
|
if (mDocument->HasAnimationController()) {
|
|
mDocument->GetAnimationController()->NotifyRefreshDriverDestroying(rd);
|
|
}
|
|
#endif // MOZ_SMIL
|
|
}
|
|
|
|
// 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);
|
|
mResizeEvent.Revoke();
|
|
if (mAsyncResizeTimerIsActive) {
|
|
mAsyncResizeEventTimer->Cancel();
|
|
mAsyncResizeTimerIsActive = PR_FALSE;
|
|
}
|
|
|
|
CancelAllPendingReflows();
|
|
CancelPostedReflowCallbacks();
|
|
|
|
// Destroy the frame manager. This will destroy the frame hierarchy
|
|
mFrameConstructor->WillDestroyFrameTree();
|
|
FrameManager()->Destroy();
|
|
|
|
// 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(nsnull);
|
|
|
|
// Clear the link handler (weak reference) as well
|
|
mPresContext->SetLinkHandler(nsnull);
|
|
}
|
|
|
|
mHaveShutDown = PR_TRUE;
|
|
}
|
|
|
|
// Dynamic stack memory allocation
|
|
/* virtual */ void
|
|
PresShell::PushStackMemory()
|
|
{
|
|
mStackArena.Push();
|
|
}
|
|
|
|
/* virtual */ void
|
|
PresShell::PopStackMemory()
|
|
{
|
|
mStackArena.Pop();
|
|
}
|
|
|
|
/* virtual */ void*
|
|
PresShell::AllocateStackMemory(size_t aSize)
|
|
{
|
|
return mStackArena.Allocate(aSize);
|
|
}
|
|
|
|
void
|
|
PresShell::FreeFrame(nsQueryFrame::FrameIID aCode, void* aPtr)
|
|
{
|
|
#ifdef DEBUG
|
|
mPresArenaAllocCount--;
|
|
#endif
|
|
if (PRESARENA_MUST_FREE_DURING_DESTROY || !mIsDestroying)
|
|
mFrameArena.FreeByCode(aCode, aPtr);
|
|
}
|
|
|
|
void*
|
|
PresShell::AllocateFrame(nsQueryFrame::FrameIID aCode, size_t aSize)
|
|
{
|
|
#ifdef DEBUG
|
|
mPresArenaAllocCount++;
|
|
#endif
|
|
void* result = mFrameArena.AllocateByCode(aCode, aSize);
|
|
|
|
if (result) {
|
|
memset(result, 0, aSize);
|
|
}
|
|
return result;
|
|
}
|
|
|
|
void
|
|
PresShell::FreeMisc(size_t aSize, void* aPtr)
|
|
{
|
|
#ifdef DEBUG
|
|
mPresArenaAllocCount--;
|
|
#endif
|
|
if (PRESARENA_MUST_FREE_DURING_DESTROY || !mIsDestroying)
|
|
mFrameArena.FreeBySize(aSize, aPtr);
|
|
}
|
|
|
|
void*
|
|
PresShell::AllocateMisc(size_t aSize)
|
|
{
|
|
#ifdef DEBUG
|
|
mPresArenaAllocCount++;
|
|
#endif
|
|
return mFrameArena.AllocateBySize(aSize);
|
|
}
|
|
|
|
void
|
|
nsIPresShell::SetAuthorStyleDisabled(PRBool aStyleDisabled)
|
|
{
|
|
if (aStyleDisabled != mStyleSet->GetAuthorStyleDisabled()) {
|
|
mStyleSet->SetAuthorStyleDisabled(aStyleDisabled);
|
|
ReconstructStyleData();
|
|
}
|
|
}
|
|
|
|
PRBool
|
|
nsIPresShell::GetAuthorStyleDisabled() const
|
|
{
|
|
return mStyleSet->GetAuthorStyleDisabled();
|
|
}
|
|
|
|
nsresult
|
|
PresShell::SetPreferenceStyleRules(PRBool aForceReflow)
|
|
{
|
|
NS_TIME_FUNCTION_MIN(1.0);
|
|
|
|
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
|
|
// DocumentViewerImpl::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 NS_DEBUG
|
|
PRInt32 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 = nsnull;
|
|
}
|
|
}
|
|
return result;
|
|
}
|
|
|
|
nsresult PresShell::CreatePreferenceStyleSheet(void)
|
|
{
|
|
NS_TIME_FUNCTION_MIN(1.0);
|
|
|
|
NS_ASSERTION(!mPrefStyleSheet, "prefStyleSheet already exists");
|
|
nsresult result = NS_NewCSSStyleSheet(getter_AddRefs(mPrefStyleSheet));
|
|
if (NS_SUCCEEDED(result)) {
|
|
NS_ASSERTION(mPrefStyleSheet, "null but no error");
|
|
nsCOMPtr<nsIURI> uri;
|
|
result = NS_NewURI(getter_AddRefs(uri), "about:PreferenceStyleSheet", nsnull);
|
|
if (NS_SUCCEEDED(result)) {
|
|
NS_ASSERTION(uri, "null but no error");
|
|
mPrefStyleSheet->SetURIs(uri, uri, uri);
|
|
mPrefStyleSheet->SetComplete();
|
|
PRUint32 index;
|
|
result =
|
|
mPrefStyleSheet->InsertRuleInternal(NS_LITERAL_STRING("@namespace url(http://www.w3.org/1999/xhtml);"),
|
|
0, &index);
|
|
if (NS_SUCCEEDED(result)) {
|
|
mStyleSet->AppendStyleSheet(nsStyleSet::eUserSheet, mPrefStyleSheet);
|
|
}
|
|
}
|
|
}
|
|
|
|
#ifdef DEBUG_attinasi
|
|
printf("CreatePrefStyleSheet completed: error=%ld\n",(long)result);
|
|
#endif
|
|
|
|
if (NS_FAILED(result)) {
|
|
mPrefStyleSheet = nsnull;
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
// XXX We want these after the @namespace rule. Does order matter
|
|
// for these rules, or can we call StyleRule::StyleRuleCount()
|
|
// and just "append"?
|
|
static PRUint32 sInsertPrefSheetRulesAt = 1;
|
|
|
|
nsresult
|
|
PresShell::SetPrefNoScriptRule()
|
|
{
|
|
NS_TIME_FUNCTION_MIN(1.0);
|
|
|
|
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 (mPresContext->Type() == nsPresContext::eContext_PrintPreview ||
|
|
mPresContext->Type() == nsPresContext::eContext_Print) {
|
|
while (doc->GetOriginalDocument()) {
|
|
doc = doc->GetOriginalDocument();
|
|
}
|
|
}
|
|
|
|
PRBool scriptEnabled = doc->IsScriptEnabled();
|
|
if (scriptEnabled) {
|
|
if (!mPrefStyleSheet) {
|
|
rv = CreatePreferenceStyleSheet();
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
}
|
|
|
|
PRUint32 index = 0;
|
|
mPrefStyleSheet->
|
|
InsertRuleInternal(NS_LITERAL_STRING("noscript{display:none!important}"),
|
|
sInsertPrefSheetRulesAt, &index);
|
|
}
|
|
|
|
return rv;
|
|
}
|
|
|
|
nsresult PresShell::SetPrefNoFramesRule(void)
|
|
{
|
|
NS_TIME_FUNCTION_MIN(1.0);
|
|
|
|
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");
|
|
|
|
PRBool allowSubframes = PR_TRUE;
|
|
nsCOMPtr<nsISupports> container = mPresContext->GetContainer();
|
|
nsCOMPtr<nsIDocShell> docShell(do_QueryInterface(container));
|
|
if (docShell) {
|
|
docShell->GetAllowSubframes(&allowSubframes);
|
|
}
|
|
if (!allowSubframes) {
|
|
PRUint32 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_TIME_FUNCTION_MIN(1.0);
|
|
|
|
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, "}");
|
|
PRUint32 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);
|
|
|
|
PRBool 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{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_TIME_FUNCTION_MIN(1.0);
|
|
|
|
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
|
|
PRUint32 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);
|
|
}
|
|
PRUint8 focusRingWidth = mPresContext->FocusRingWidth();
|
|
PRBool focusRingOnAnything = mPresContext->GetFocusRingOnAnything();
|
|
PRUint8 focusRingStyle = mPresContext->GetFocusRingStyle();
|
|
|
|
if ((NS_SUCCEEDED(result) && focusRingWidth != 1 && focusRingWidth <= 4 ) || focusRingOnAnything) {
|
|
PRUint32 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 DocumentViewerImpl::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();
|
|
PRInt32 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 DocumentViewerImpl::CreateStyleSet does
|
|
// wrt ordering.
|
|
nsCOMPtr<nsIStyleSheet> sheet = do_QueryInterface(aSheet);
|
|
if (!sheet) {
|
|
return;
|
|
}
|
|
|
|
mStyleSet->AppendStyleSheet(nsStyleSet::eAgentSheet, 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(PRInt16 aToggle)
|
|
{
|
|
mSelection->SetDisplaySelection(aToggle);
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
PresShell::GetDisplaySelection(PRInt16 *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;
|
|
}
|
|
|
|
nsISelection*
|
|
PresShell::GetCurrentSelection(SelectionType aType)
|
|
{
|
|
if (!mSelection)
|
|
return nsnull;
|
|
|
|
return mSelection->GetSelection(aType);
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
PresShell::ScrollSelectionIntoView(SelectionType aType, SelectionRegion aRegion,
|
|
PRInt16 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 = PR_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 = PR_TRUE;
|
|
if (mDocument) {
|
|
mDocument->RemoveObserver(this);
|
|
}
|
|
}
|
|
|
|
#ifdef DEBUG_kipp
|
|
char* nsPresShell_ReflowStackPointerTop;
|
|
#endif
|
|
|
|
nsresult
|
|
PresShell::InitialReflow(nscoord aWidth, nscoord aHeight)
|
|
{
|
|
if (mIsDestroying) {
|
|
return NS_OK;
|
|
}
|
|
|
|
if (!mDocument) {
|
|
// Nothing to do
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_TIME_FUNCTION_WITH_DOCURL;
|
|
|
|
NS_ASSERTION(!mDidInitialReflow, "Why are we being called?");
|
|
|
|
nsCOMPtr<nsIPresShell> kungFuDeathGrip(this);
|
|
mDidInitialReflow = PR_TRUE;
|
|
|
|
#ifdef NS_DEBUG
|
|
if (VERIFY_REFLOW_NOISY_RC & gVerifyReflowFlags) {
|
|
if (mDocument) {
|
|
nsIURI *uri = mDocument->GetDocumentURI();
|
|
if (uri) {
|
|
nsCAutoString url;
|
|
uri->GetSpec(url);
|
|
printf("*** PresShell::InitialReflow (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 = FrameManager()->GetRootFrame();
|
|
NS_ASSERTION(!rootFrame, "How did that happen, exactly?");
|
|
if (!rootFrame) {
|
|
nsAutoScriptBlocker scriptBlocker;
|
|
mFrameConstructor->BeginUpdate();
|
|
mFrameConstructor->ConstructRootFrame(&rootFrame);
|
|
FrameManager()->SetRootFrame(rootFrame);
|
|
mFrameConstructor->EndUpdate();
|
|
}
|
|
|
|
NS_ENSURE_STATE(!mHaveShutDown);
|
|
|
|
if (!rootFrame) {
|
|
return NS_ERROR_OUT_OF_MEMORY;
|
|
}
|
|
|
|
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(nsnull, root, nsnull, PR_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();
|
|
|
|
NS_TIME_FUNCTION_MARK("XBL binding constructors fired");
|
|
|
|
// 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();
|
|
mFrameConstructor->ProcessPendingRestyles();
|
|
}
|
|
|
|
// And that might have run _more_ XBL constructors
|
|
NS_ENSURE_STATE(!mHaveShutDown);
|
|
}
|
|
|
|
NS_ASSERTION(rootFrame, "How did that happen?");
|
|
|
|
// Note: Because the frame just got created, it has the NS_FRAME_IS_DIRTY
|
|
// bit set. Unset it so that FrameNeedsReflow() will work right.
|
|
NS_ASSERTION(!mDirtyRoots.Contains(rootFrame),
|
|
"Why is the root in mDirtyRoots already?");
|
|
|
|
rootFrame->RemoveStateBits(NS_FRAME_IS_DIRTY |
|
|
NS_FRAME_HAS_DIRTY_CHILDREN);
|
|
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 puick 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 = PR_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 = PR_FALSE;
|
|
} else {
|
|
// Initialize the timer.
|
|
|
|
// Default to PAINTLOCK_EVENT_DELAY if we can't get the pref value.
|
|
PRInt32 delay =
|
|
Preferences::GetInt("nglayout.initialpaint.delay",
|
|
PAINTLOCK_EVENT_DELAY);
|
|
|
|
mPaintSuppressionTimer->InitWithFuncCallback(sPaintSuppressionCallback,
|
|
this, delay,
|
|
nsITimer::TYPE_ONE_SHOT);
|
|
}
|
|
}
|
|
|
|
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 = PR_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 = FrameManager()->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;
|
|
}
|
|
|
|
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
|
|
if (!rootFrame)
|
|
return NS_OK;
|
|
|
|
NS_ASSERTION(mViewManager, "Must have view manager");
|
|
nsCOMPtr<nsIViewManager> viewManagerDeathGrip = mViewManager;
|
|
// Take this ref after viewManager so it'll make sure to go away first
|
|
nsCOMPtr<nsIPresShell> kungFuDeathGrip(this);
|
|
if (!GetPresContext()->SupressingResizeReflow())
|
|
{
|
|
nsIViewManager::UpdateViewBatch batch(mViewManager);
|
|
|
|
// 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();
|
|
mFrameConstructor->ProcessPendingRestyles();
|
|
}
|
|
|
|
if (!mIsDestroying) {
|
|
// 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);
|
|
|
|
mDirtyRoots.RemoveElement(rootFrame);
|
|
DoReflow(rootFrame, PR_TRUE);
|
|
}
|
|
|
|
DidDoReflow(PR_TRUE);
|
|
}
|
|
|
|
batch.EndUpdateViewBatch(NS_VMREFRESH_NO_SYNC);
|
|
}
|
|
|
|
if (aHeight == NS_UNCONSTRAINEDSIZE) {
|
|
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 = PR_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;
|
|
}
|
|
}
|
|
}
|
|
|
|
return NS_OK; //XXX this needs to be real. MMP
|
|
}
|
|
|
|
void
|
|
PresShell::FireBeforeResizeEvent()
|
|
{
|
|
if (mIsDocumentGone)
|
|
return;
|
|
|
|
// Send beforeresize event from here.
|
|
nsEvent event(PR_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 = PR_FALSE;
|
|
mAsyncResizeEventTimer->Cancel();
|
|
}
|
|
mResizeEvent.Revoke();
|
|
|
|
if (mIsDocumentGone)
|
|
return;
|
|
|
|
//Send resize event from here.
|
|
nsEvent event(PR_TRUE, NS_RESIZE_EVENT);
|
|
nsEventStatus status = nsEventStatus_eIgnore;
|
|
|
|
nsPIDOMWindow *window = mDocument->GetWindow();
|
|
if (window) {
|
|
nsCOMPtr<nsIPresShell> kungFuDeathGrip(this);
|
|
mInResize = PR_TRUE;
|
|
nsEventDispatcher::Dispatch(window, mPresContext, &event, nsnull, &status);
|
|
mInResize = PR_FALSE;
|
|
}
|
|
}
|
|
|
|
void
|
|
PresShell::SetIgnoreFrameDestruction(PRBool aIgnore)
|
|
{
|
|
mIgnoreFrameDestruction = aIgnore;
|
|
}
|
|
|
|
void
|
|
PresShell::NotifyDestroyingFrame(nsIFrame* aFrame)
|
|
{
|
|
NS_TIME_FUNCTION_MIN(1.0);
|
|
|
|
mPresContext->ForgetUpdatePluginGeometryFrame(aFrame);
|
|
|
|
if (!mIgnoreFrameDestruction) {
|
|
mPresContext->StopImagesFor(aFrame);
|
|
|
|
mFrameConstructor->NotifyDestroyingFrame(aFrame);
|
|
|
|
for (PRInt32 idx = mDirtyRoots.Length(); idx; ) {
|
|
--idx;
|
|
if (mDirtyRoots[idx] == aFrame) {
|
|
mDirtyRoots.RemoveElementAt(idx);
|
|
}
|
|
}
|
|
|
|
// Notify the frame manager
|
|
FrameManager()->NotifyDestroyingFrame(aFrame);
|
|
|
|
// Remove frame properties
|
|
mPresContext->NotifyDestroyingFrame(aFrame);
|
|
|
|
if (aFrame == mCurrentEventFrame) {
|
|
mCurrentEventContent = aFrame->GetContent();
|
|
mCurrentEventFrame = nsnull;
|
|
}
|
|
|
|
#ifdef NS_DEBUG
|
|
if (aFrame == mDrawEventTargetFrame) {
|
|
mDrawEventTargetFrame = nsnull;
|
|
}
|
|
#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] = nsnull;
|
|
}
|
|
}
|
|
|
|
mFramesToDirty.RemoveEntry(aFrame);
|
|
}
|
|
}
|
|
|
|
already_AddRefed<nsCaret> PresShell::GetCaret() const
|
|
{
|
|
nsCaret* caret = mCaret;
|
|
NS_IF_ADDREF(caret);
|
|
return caret;
|
|
}
|
|
|
|
void PresShell::MaybeInvalidateCaretPosition()
|
|
{
|
|
if (mCaret) {
|
|
mCaret->InvalidateOutsideCaret();
|
|
}
|
|
}
|
|
|
|
void PresShell::SetCaret(nsCaret *aNewCaret)
|
|
{
|
|
mCaret = aNewCaret;
|
|
}
|
|
|
|
void PresShell::RestoreCaret()
|
|
{
|
|
mCaret = mOriginalCaret;
|
|
}
|
|
|
|
NS_IMETHODIMP PresShell::SetCaretEnabled(PRBool aInEnable)
|
|
{
|
|
PRBool 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(PRBool aReadOnly)
|
|
{
|
|
if (mCaret)
|
|
mCaret->SetCaretReadOnly(aReadOnly);
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP PresShell::GetCaretEnabled(PRBool *aOutEnabled)
|
|
{
|
|
NS_ENSURE_ARG_POINTER(aOutEnabled);
|
|
*aOutEnabled = mCaretEnabled;
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP PresShell::SetCaretVisibilityDuringSelection(PRBool aVisibility)
|
|
{
|
|
if (mCaret)
|
|
mCaret->SetVisibilityDuringSelection(aVisibility);
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP PresShell::GetCaretVisible(PRBool *aOutIsVisible)
|
|
{
|
|
*aOutIsVisible = PR_FALSE;
|
|
if (mCaret) {
|
|
nsresult rv = mCaret->GetCaretVisible(aOutIsVisible);
|
|
NS_ENSURE_SUCCESS(rv,rv);
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP PresShell::SetSelectionFlags(PRInt16 aInEnable)
|
|
{
|
|
mSelectionFlags = aInEnable;
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP PresShell::GetSelectionFlags(PRInt16 *aOutEnable)
|
|
{
|
|
if (!aOutEnable)
|
|
return NS_ERROR_INVALID_ARG;
|
|
*aOutEnable = mSelectionFlags;
|
|
return NS_OK;
|
|
}
|
|
|
|
//implementation of nsISelectionController
|
|
|
|
NS_IMETHODIMP
|
|
PresShell::CharacterMove(PRBool aForward, PRBool aExtend)
|
|
{
|
|
return mSelection->CharacterMove(aForward, aExtend);
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
PresShell::CharacterExtendForDelete()
|
|
{
|
|
return mSelection->CharacterExtendForDelete();
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
PresShell::CharacterExtendForBackspace()
|
|
{
|
|
return mSelection->CharacterExtendForBackspace();
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
PresShell::WordMove(PRBool aForward, PRBool aExtend)
|
|
{
|
|
return mSelection->WordMove(aForward, aExtend);
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
PresShell::WordExtendForDelete(PRBool aForward)
|
|
{
|
|
return mSelection->WordExtendForDelete(aForward);
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
PresShell::LineMove(PRBool aForward, PRBool 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(PRBool aForward, PRBool aExtend)
|
|
{
|
|
return mSelection->IntraLineMove(aForward, aExtend);
|
|
}
|
|
|
|
|
|
|
|
NS_IMETHODIMP
|
|
PresShell::PageMove(PRBool aForward, PRBool 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(PRBool 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(PRBool aForward)
|
|
{
|
|
nsIScrollableFrame* scrollFrame =
|
|
GetFrameToScrollAsScrollable(nsIPresShell::eVertical);
|
|
if (scrollFrame) {
|
|
PRInt32 lineCount = 1;
|
|
#ifdef MOZ_WIDGET_COCOA
|
|
// Emulate the Mac IE behavior of scrolling a minimum of 2 lines
|
|
// rather than 1. This vastly improves scrolling speed.
|
|
lineCount = 2;
|
|
#endif
|
|
scrollFrame->ScrollBy(nsIntPoint(0, aForward ? lineCount : -lineCount),
|
|
nsIScrollableFrame::LINES,
|
|
nsIScrollableFrame::SMOOTH);
|
|
|
|
//NEW FOR LINES
|
|
// force the update to happen now, otherwise multiple scrolls can
|
|
// occur before the update is processed. (bug #7354)
|
|
|
|
// I'd use Composite here, but it doesn't always work.
|
|
// vm->Composite();
|
|
nsIViewManager* viewManager = GetViewManager();
|
|
if (viewManager) {
|
|
viewManager->ForceUpdate();
|
|
}
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
PresShell::ScrollHorizontal(PRBool aLeft)
|
|
{
|
|
nsIScrollableFrame* scrollFrame =
|
|
GetFrameToScrollAsScrollable(nsIPresShell::eHorizontal);
|
|
if (scrollFrame) {
|
|
scrollFrame->ScrollBy(nsIntPoint(aLeft ? -1 : 1, 0),
|
|
nsIScrollableFrame::LINES,
|
|
nsIScrollableFrame::SMOOTH);
|
|
//NEW FOR LINES
|
|
// force the update to happen now, otherwise multiple scrolls can
|
|
// occur before the update is processed. (bug #7354)
|
|
|
|
// I'd use Composite here, but it doesn't always work.
|
|
// vm->Composite();
|
|
nsIViewManager* viewManager = GetViewManager();
|
|
if (viewManager) {
|
|
viewManager->ForceUpdate();
|
|
}
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
PresShell::CompleteScroll(PRBool aForward)
|
|
{
|
|
nsIScrollableFrame* scrollFrame =
|
|
GetFrameToScrollAsScrollable(nsIPresShell::eVertical);
|
|
if (scrollFrame) {
|
|
scrollFrame->ScrollBy(nsIntPoint(0, aForward ? 1 : -1),
|
|
nsIScrollableFrame::WHOLE,
|
|
nsIScrollableFrame::INSTANT);
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
PresShell::CompleteMove(PRBool aForward, PRBool 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;
|
|
nsPeekOffsetStruct pos = frame->GetExtremeCaretPosition(!aForward);
|
|
mSelection->HandleClick(pos.mResultContent, pos.mContentOffset,
|
|
pos.mContentOffset, aExtend, PR_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();
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
PresShell::CheckVisibility(nsIDOMNode *node, PRInt16 startOffset, PRInt16 EndOffset, PRBool *_retval)
|
|
{
|
|
if (!node || startOffset>EndOffset || !_retval || startOffset<0 || EndOffset<0)
|
|
return NS_ERROR_INVALID_ARG;
|
|
*_retval = PR_FALSE; //initialize return parameter
|
|
nsCOMPtr<nsIContent> content(do_QueryInterface(node));
|
|
if (!content)
|
|
return NS_ERROR_FAILURE;
|
|
nsIFrame *frame = content->GetPrimaryFrame();
|
|
if (!frame) //no frame to look at so it must not be visible
|
|
return NS_OK;
|
|
//start process now to go through all frames to find startOffset. then check chars after that to see
|
|
//if anything until EndOffset is visible.
|
|
PRBool finished = PR_FALSE;
|
|
frame->CheckVisibility(mPresContext,startOffset,EndOffset,PR_TRUE,&finished, _retval);
|
|
return NS_OK;//dont worry about other return val
|
|
}
|
|
|
|
//end implementations nsISelectionController
|
|
|
|
|
|
void
|
|
PresShell::StyleChangeReflow()
|
|
{
|
|
nsIFrame* rootFrame = FrameManager()->GetRootFrame();
|
|
// At the moment at least, we don't have a root frame before the initial
|
|
// reflow; it's safe to just ignore the request in that case
|
|
if (!rootFrame)
|
|
return;
|
|
|
|
FrameNeedsReflow(rootFrame, eStyleChange, NS_FRAME_IS_DIRTY);
|
|
}
|
|
|
|
nsIFrame*
|
|
nsIPresShell::GetRootFrameExternal() const
|
|
{
|
|
return FrameManager()->GetRootFrame();
|
|
}
|
|
|
|
nsIFrame*
|
|
nsIPresShell::GetRootScrollFrame() const
|
|
{
|
|
nsIFrame* rootFrame = FrameManager()->GetRootFrame();
|
|
// Ensure root frame is a viewport frame
|
|
if (!rootFrame || nsGkAtoms::viewportFrame != rootFrame->GetType())
|
|
return nsnull;
|
|
nsIFrame* theFrame = rootFrame->GetFirstChild(nsnull);
|
|
if (!theFrame || nsGkAtoms::scrollFrame != theFrame->GetType())
|
|
return nsnull;
|
|
return theFrame;
|
|
}
|
|
|
|
nsIScrollableFrame*
|
|
nsIPresShell::GetRootScrollFrameAsScrollable() const
|
|
{
|
|
nsIFrame* frame = GetRootScrollFrame();
|
|
if (!frame)
|
|
return nsnull;
|
|
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);
|
|
}
|
|
|
|
nsIFrame*
|
|
PresShell::GetFrameForPoint(nsIFrame* aFrame, nsPoint aPt)
|
|
{
|
|
return nsLayoutUtils::GetFrameForPoint(aFrame, aPt);
|
|
}
|
|
|
|
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)
|
|
ReconstructStyleData();
|
|
}
|
|
|
|
mFrameConstructor->EndUpdate();
|
|
}
|
|
|
|
void
|
|
PresShell::RestoreRootScrollPosition()
|
|
{
|
|
// Restore frame state for the root scroll frame
|
|
nsCOMPtr<nsILayoutHistoryState> historyState =
|
|
mDocument->GetLayoutHistoryState();
|
|
// Make sure we don't reenter reflow via the sync paint that happens while
|
|
// we're scrolling to our restored position. Entering reflow for the
|
|
// scrollable frame will cause it to reenter ScrollToRestoredPosition(), and
|
|
// it'll get all confused.
|
|
nsAutoScriptBlocker scriptBlocker;
|
|
++mChangeNestCount;
|
|
|
|
if (historyState) {
|
|
nsIFrame* scrollFrame = GetRootScrollFrame();
|
|
if (scrollFrame) {
|
|
nsIScrollableFrame* scrollableFrame = do_QueryFrame(scrollFrame);
|
|
if (scrollableFrame) {
|
|
FrameManager()->RestoreFrameStateFor(scrollFrame, historyState,
|
|
nsIStatefulFrame::eDocumentScrollState);
|
|
scrollableFrame->ScrollToRestoredPosition();
|
|
}
|
|
}
|
|
}
|
|
|
|
--mChangeNestCount;
|
|
}
|
|
|
|
void
|
|
PresShell::BeginLoad(nsIDocument *aDocument)
|
|
{
|
|
mDocumentLoading = PR_TRUE;
|
|
}
|
|
|
|
void
|
|
PresShell::EndLoad(nsIDocument *aDocument)
|
|
{
|
|
NS_PRECONDITION(aDocument == mDocument, "Wrong document");
|
|
|
|
RestoreRootScrollPosition();
|
|
|
|
mDocumentLoading = PR_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)
|
|
{
|
|
#ifdef NS_FUNCTION_TIMER
|
|
NS_TIME_FUNCTION_DECLARE_DOCURL;
|
|
nsCAutoString frameType__("N/A");
|
|
nsIAtom *atomType__ = aFrame ? aFrame->GetType() : nsnull;
|
|
if (atomType__) atomType__->ToUTF8String(frameType__);
|
|
NS_TIME_FUNCTION_MIN_FMT(1.0, "%s (line %d) (document: %s, frame type: %s)", MOZ_FUNCTION_NAME,
|
|
__LINE__, docURL__.get(), frameType__.get());
|
|
#endif
|
|
|
|
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 (! mDidInitialReflow)
|
|
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.
|
|
PRBool 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.
|
|
PRBool 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).
|
|
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);
|
|
}
|
|
}
|
|
|
|
PRInt32 childListIndex = 0;
|
|
nsIAtom *childListName;
|
|
do {
|
|
childListName = f->GetAdditionalChildListName(childListIndex++);
|
|
for (nsIFrame *kid = f->GetFirstChild(childListName); kid;
|
|
kid = kid->GetNextSibling()) {
|
|
kid->MarkIntrinsicWidthsDirty();
|
|
stack.AppendElement(kid);
|
|
}
|
|
} while (childListName);
|
|
} 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);
|
|
}
|
|
#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 = nsnull;
|
|
|
|
nsCOMPtr<nsIContent> focusedContent;
|
|
nsIFocusManager* fm = nsFocusManager::GetFocusManager();
|
|
if (fm && mDocument) {
|
|
nsCOMPtr<nsIDOMWindow> window = do_QueryInterface(mDocument->GetWindow());
|
|
|
|
nsCOMPtr<nsIDOMElement> focusedElement;
|
|
fm->GetFocusedElementForWindow(window, PR_FALSE, nsnull, 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 = PR_FALSE;
|
|
}
|
|
|
|
ASSERT_REFLOW_SCHEDULED_STATE();
|
|
}
|
|
|
|
nsresult
|
|
PresShell::RecreateFramesFor(nsIContent* aContent)
|
|
{
|
|
NS_TIME_FUNCTION_MIN(1.0);
|
|
|
|
NS_ENSURE_TRUE(mPresContext, NS_ERROR_FAILURE);
|
|
if (!mDidInitialReflow) {
|
|
// 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");
|
|
nsIViewManager::UpdateViewBatch batch(mViewManager);
|
|
|
|
// 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(nsnull, aContent, nsChangeHint_ReconstructFrame);
|
|
|
|
// Mark ourselves as not safe to flush while we're doing frame construction.
|
|
++mChangeNestCount;
|
|
nsresult rv = mFrameConstructor->ProcessRestyledFrames(changeList);
|
|
--mChangeNestCount;
|
|
|
|
batch.EndUpdateViewBatch(NS_VMREFRESH_NO_SYNC);
|
|
return rv;
|
|
}
|
|
|
|
void
|
|
nsIPresShell::PostRecreateFramesFor(Element* aElement)
|
|
{
|
|
FrameConstructor()->PostRestyleEvent(aElement, nsRestyleHint(0),
|
|
nsChangeHint_ReconstructFrame);
|
|
}
|
|
|
|
void
|
|
nsIPresShell::RestyleForAnimation(Element* aElement, nsRestyleHint aHint)
|
|
{
|
|
FrameConstructor()->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()
|
|
{
|
|
NS_TIME_FUNCTION_MIN(1.0);
|
|
|
|
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, PRBool aScroll)
|
|
{
|
|
if (!mDocument) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
// 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(nsnull, 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) {
|
|
PRUint32 i;
|
|
// Loop through the named nodes looking for the first anchor
|
|
for (i = 0; PR_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 = nsnull;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// 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) {
|
|
PRUint32 i;
|
|
// Loop through the named nodes looking for the first anchor
|
|
for (i = 0; PR_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
|
|
|
|
if (content) {
|
|
if (aScroll) {
|
|
rv = ScrollContentIntoView(content, NS_PRESSHELL_SCROLL_TOP,
|
|
NS_PRESSHELL_SCROLL_ANYWHERE,
|
|
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.
|
|
PRBool 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
|
|
nsCOMPtr<nsIDOMRange> jumpToRange = do_CreateInstance(kRangeCID);
|
|
if (jumpToRange) {
|
|
while (content && content->GetChildCount() > 0) {
|
|
content = content->GetChildAt(0);
|
|
}
|
|
nsCOMPtr<nsIDOMNode> node(do_QueryInterface(content));
|
|
NS_ASSERTION(node, "No nsIDOMNode for descendant of anchor");
|
|
jumpToRange->SelectNodeContents(node);
|
|
}
|
|
if (jumpToRange) {
|
|
// 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);
|
|
}
|
|
}
|
|
} else {
|
|
rv = NS_ERROR_FAILURE; //changed to NS_OK in quirks mode if ScrollTo is called
|
|
|
|
// Scroll to the top/left if the anchor can not be
|
|
// found and it is labelled top (quirks mode only). @see bug 80784
|
|
if ((NS_LossyConvertUTF16toASCII(aAnchorName).LowerCaseEqualsLiteral("top")) &&
|
|
(mPresContext->CompatibilityMode() == eCompatibility_NavQuirks)) {
|
|
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(mDidInitialReflow, "should have done initial reflow by now");
|
|
|
|
nsIScrollableFrame* rootScroll = GetRootScrollFrameAsScrollable();
|
|
if (!rootScroll ||
|
|
mLastAnchorScrollPositionY != rootScroll->GetScrollPosition().y)
|
|
return NS_OK;
|
|
|
|
nsresult rv = ScrollContentIntoView(mLastAnchorScrolledTo, NS_PRESSHELL_SCROLL_TOP,
|
|
NS_PRESSHELL_SCROLL_ANYWHERE,
|
|
ANCHOR_SCROLL_FLAGS);
|
|
mLastAnchorScrolledTo = nsnull;
|
|
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
|
|
*/
|
|
static void
|
|
AccumulateFrameBounds(nsIFrame* aContainerFrame,
|
|
nsIFrame* aFrame,
|
|
PRBool aUseWholeLineHeightForInlines,
|
|
nsRect& aRect,
|
|
PRBool& aHaveRect)
|
|
{
|
|
nsRect frameBounds = aFrame->GetRect() +
|
|
aFrame->GetParent()->GetOffsetTo(aContainerFrame);
|
|
|
|
// 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) {
|
|
nsIAtom* frameType = NULL;
|
|
nsIFrame *prevFrame = aFrame;
|
|
nsIFrame *f = aFrame;
|
|
|
|
while (f &&
|
|
(frameType = f->GetType()) == nsGkAtoms::inlineFrame) {
|
|
prevFrame = f;
|
|
f = prevFrame->GetParent();
|
|
}
|
|
|
|
if (f != aFrame &&
|
|
f &&
|
|
frameType == nsGkAtoms::blockFrame) {
|
|
// find the line containing aFrame and increase the top of |offset|.
|
|
nsAutoLineIterator lines = f->GetLineIterator();
|
|
if (lines) {
|
|
PRInt32 index = lines->FindLineContaining(prevFrame);
|
|
if (index >= 0) {
|
|
nsIFrame *trash1;
|
|
PRInt32 trash2;
|
|
nsRect lineBounds;
|
|
PRUint32 trash3;
|
|
|
|
if (NS_SUCCEEDED(lines->GetLine(index, &trash1, &trash2,
|
|
lineBounds, &trash3))) {
|
|
lineBounds += f->GetOffsetTo(aContainerFrame);
|
|
if (lineBounds.y < frameBounds.y) {
|
|
frameBounds.height = frameBounds.YMost() - lineBounds.y;
|
|
frameBounds.y = lineBounds.y;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
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, frameBounds);
|
|
} else {
|
|
aHaveRect = PR_TRUE;
|
|
aRect = frameBounds;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* 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(nsIScrollableFrame* aScrollFrame,
|
|
const nsRect& aRect,
|
|
PRIntn aVPercent,
|
|
PRIntn aHPercent,
|
|
PRUint32 aFlags)
|
|
{
|
|
nsPoint scrollPt = aScrollFrame->GetScrollPosition();
|
|
nsRect visibleRect(scrollPt, aScrollFrame->GetScrollPortRect().Size());
|
|
nsSize lineSize = aScrollFrame->GetLineScrollAmount();
|
|
nsPresContext::ScrollbarStyles ss = aScrollFrame->GetScrollbarStyles();
|
|
|
|
if ((aFlags & nsIPresShell::SCROLL_OVERFLOW_HIDDEN) ||
|
|
ss.mVertical != NS_STYLE_OVERFLOW_HIDDEN) {
|
|
// See how the rect should be positioned vertically
|
|
if (NS_PRESSHELL_SCROLL_ANYWHERE == aVPercent ||
|
|
(NS_PRESSHELL_SCROLL_IF_NOT_VISIBLE == aVPercent &&
|
|
aRect.height < lineSize.height)) {
|
|
// The caller doesn't care where the frame is positioned vertically,
|
|
// so long as it's fully visible
|
|
if (aRect.y < visibleRect.y) {
|
|
// Scroll up so the frame's top edge is visible
|
|
scrollPt.y = aRect.y;
|
|
} else if (aRect.YMost() > visibleRect.YMost()) {
|
|
// Scroll down so the frame's bottom edge is visible. Make sure the
|
|
// frame's top edge is still visible
|
|
scrollPt.y += aRect.YMost() - visibleRect.YMost();
|
|
if (scrollPt.y > aRect.y) {
|
|
scrollPt.y = aRect.y;
|
|
}
|
|
}
|
|
} else if (NS_PRESSHELL_SCROLL_IF_NOT_VISIBLE == aVPercent) {
|
|
// Scroll only if no part of the frame is visible in this view
|
|
if (aRect.YMost() - lineSize.height < visibleRect.y) {
|
|
// Scroll up so the frame's top edge is visible
|
|
scrollPt.y = aRect.y;
|
|
} else if (aRect.y + lineSize.height > visibleRect.YMost()) {
|
|
// Scroll down so the frame's bottom edge is visible. Make sure the
|
|
// frame's top edge is still visible
|
|
scrollPt.y += aRect.YMost() - visibleRect.YMost();
|
|
if (scrollPt.y > aRect.y) {
|
|
scrollPt.y = aRect.y;
|
|
}
|
|
}
|
|
} else {
|
|
// Align the frame edge according to the specified percentage
|
|
nscoord frameAlignY =
|
|
NSToCoordRound(aRect.y + aRect.height * (aVPercent / 100.0f));
|
|
scrollPt.y =
|
|
NSToCoordRound(frameAlignY - visibleRect.height * (aVPercent / 100.0f));
|
|
}
|
|
}
|
|
|
|
if ((aFlags & nsIPresShell::SCROLL_OVERFLOW_HIDDEN) ||
|
|
ss.mHorizontal != NS_STYLE_OVERFLOW_HIDDEN) {
|
|
// See how the frame should be positioned horizontally
|
|
if (NS_PRESSHELL_SCROLL_ANYWHERE == aHPercent ||
|
|
(NS_PRESSHELL_SCROLL_IF_NOT_VISIBLE == aHPercent &&
|
|
aRect.width < lineSize.width)) {
|
|
// The caller doesn't care where the frame is positioned horizontally,
|
|
// so long as it's fully visible
|
|
if (aRect.x < visibleRect.x) {
|
|
// Scroll left so the frame's left edge is visible
|
|
scrollPt.x = aRect.x;
|
|
} else if (aRect.XMost() > visibleRect.XMost()) {
|
|
// Scroll right so the frame's right edge is visible. Make sure the
|
|
// frame's left edge is still visible
|
|
scrollPt.x += aRect.XMost() - visibleRect.XMost();
|
|
if (scrollPt.x > aRect.x) {
|
|
scrollPt.x = aRect.x;
|
|
}
|
|
}
|
|
} else if (NS_PRESSHELL_SCROLL_IF_NOT_VISIBLE == aHPercent) {
|
|
// Scroll only if no part of the frame is visible in this view
|
|
if (aRect.XMost() - lineSize.width < visibleRect.x) {
|
|
// Scroll left so the frame's left edge is visible
|
|
scrollPt.x = aRect.x;
|
|
} else if (aRect.x + lineSize.width > visibleRect.XMost()) {
|
|
// Scroll right so the frame's right edge is visible. Make sure the
|
|
// frame's left edge is still visible
|
|
scrollPt.x += aRect.XMost() - visibleRect.XMost();
|
|
if (scrollPt.x > aRect.x) {
|
|
scrollPt.x = aRect.x;
|
|
}
|
|
}
|
|
} else {
|
|
// Align the frame edge according to the specified percentage
|
|
nscoord frameAlignX =
|
|
NSToCoordRound(aRect.x + (aRect.width) * (aHPercent / 100.0f));
|
|
scrollPt.x =
|
|
NSToCoordRound(frameAlignX - visibleRect.width * (aHPercent / 100.0f));
|
|
}
|
|
}
|
|
|
|
aScrollFrame->ScrollTo(scrollPt, nsIScrollableFrame::INSTANT);
|
|
}
|
|
|
|
nsresult
|
|
PresShell::ScrollContentIntoView(nsIContent* aContent,
|
|
PRIntn aVPercent,
|
|
PRIntn aHPercent,
|
|
PRUint32 aFlags)
|
|
{
|
|
nsCOMPtr<nsIContent> content = aContent; // Keep content alive while flushing.
|
|
NS_ENSURE_TRUE(content, NS_ERROR_NULL_POINTER);
|
|
nsCOMPtr<nsIDocument> currentDoc = content->GetCurrentDoc();
|
|
NS_ENSURE_STATE(currentDoc);
|
|
|
|
NS_ASSERTION(mDidInitialReflow, "should have done initial reflow by now");
|
|
|
|
mContentToScrollTo = aContent;
|
|
mContentScrollVPosition = aVPercent;
|
|
mContentScrollHPosition = aHPercent;
|
|
mContentToScrollToFlags = aFlags;
|
|
|
|
// Flush layout and attempt to scroll in the process.
|
|
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(content, aVPercent, aHPercent, aFlags);
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
void
|
|
PresShell::DoScrollContentIntoView(nsIContent* aContent,
|
|
PRIntn aVPercent,
|
|
PRIntn aHPercent,
|
|
PRUint32 aFlags)
|
|
{
|
|
NS_ASSERTION(mDidInitialReflow, "should have done initial reflow by now");
|
|
|
|
nsIFrame* frame = aContent->GetPrimaryFrame();
|
|
if (!frame) {
|
|
mContentToScrollTo = nsnull;
|
|
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;
|
|
}
|
|
|
|
nsIFrame* container =
|
|
nsLayoutUtils::GetClosestFrameOfType(frame, nsGkAtoms::scrollFrame);
|
|
if (!container) {
|
|
// nothing can be scrolled
|
|
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;
|
|
PRBool haveRect = PR_FALSE;
|
|
PRBool useWholeLineHeightForInlines = aVPercent != NS_PRESSHELL_SCROLL_ANYWHERE;
|
|
do {
|
|
AccumulateFrameBounds(container, frame, useWholeLineHeightForInlines,
|
|
frameBounds, haveRect);
|
|
} while ((frame = frame->GetNextContinuation()));
|
|
|
|
ScrollFrameRectIntoView(container, frameBounds, aVPercent, aHPercent,
|
|
aFlags);
|
|
}
|
|
|
|
PRBool
|
|
PresShell::ScrollFrameRectIntoView(nsIFrame* aFrame,
|
|
const nsRect& aRect,
|
|
PRIntn aVPercent,
|
|
PRIntn aHPercent,
|
|
PRUint32 aFlags)
|
|
{
|
|
PRBool didScroll = PR_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(sf, rect - sf->GetScrolledFrame()->GetPosition(),
|
|
aVPercent, aHPercent, 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 = PR_TRUE;
|
|
}
|
|
|
|
// only scroll one container when this flag is set
|
|
if (aFlags & nsIPresShell::SCROLL_FIRST_ANCESTOR_ONLY) {
|
|
break;
|
|
}
|
|
}
|
|
rect += container->GetPosition();
|
|
nsIFrame* parent = container->GetParent();
|
|
if (!parent && !(aFlags & nsIPresShell::SCROLL_NO_PARENT_FRAMES)) {
|
|
nsPoint extraOffset(0,0);
|
|
parent = nsLayoutUtils::GetCrossDocParentFrame(container, &extraOffset);
|
|
if (parent) {
|
|
PRInt32 APD = container->PresContext()->AppUnitsPerDevPixel();
|
|
PRInt32 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 = FrameManager()->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;
|
|
}
|
|
|
|
// GetLinkLocation: copy link location to clipboard
|
|
nsresult PresShell::GetLinkLocation(nsIDOMNode* aNode, nsAString& aLocationString) const
|
|
{
|
|
#ifdef DEBUG_dr
|
|
printf("dr :: PresShell::GetLinkLocation\n");
|
|
#endif
|
|
|
|
NS_ENSURE_ARG_POINTER(aNode);
|
|
nsresult rv;
|
|
nsAutoString anchorText;
|
|
static const char strippedChars[] = "\t\r\n";
|
|
|
|
// are we an anchor?
|
|
nsCOMPtr<nsIDOMHTMLAnchorElement> anchor(do_QueryInterface(aNode));
|
|
nsCOMPtr<nsIDOMHTMLAreaElement> area;
|
|
nsCOMPtr<nsIDOMHTMLLinkElement> link;
|
|
nsAutoString xlinkType;
|
|
if (anchor) {
|
|
rv = anchor->GetHref(anchorText);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
} else {
|
|
// area?
|
|
area = do_QueryInterface(aNode);
|
|
if (area) {
|
|
rv = area->GetHref(anchorText);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
} else {
|
|
// link?
|
|
link = do_QueryInterface(aNode);
|
|
if (link) {
|
|
rv = link->GetHref(anchorText);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
} else {
|
|
// Xlink?
|
|
nsCOMPtr<nsIDOMElement> element(do_QueryInterface(aNode));
|
|
if (element) {
|
|
NS_NAMED_LITERAL_STRING(xlinkNS,"http://www.w3.org/1999/xlink");
|
|
element->GetAttributeNS(xlinkNS,NS_LITERAL_STRING("type"),xlinkType);
|
|
if (xlinkType.EqualsLiteral("simple")) {
|
|
element->GetAttributeNS(xlinkNS,NS_LITERAL_STRING("href"),anchorText);
|
|
if (!anchorText.IsEmpty()) {
|
|
// Resolve the full URI using baseURI property
|
|
|
|
nsCOMPtr<nsINode> node = do_QueryInterface(aNode);
|
|
NS_ENSURE_TRUE(node, NS_ERROR_UNEXPECTED);
|
|
nsCOMPtr<nsIURI> baseURI = node->GetBaseURI();
|
|
|
|
nsCAutoString spec;
|
|
rv = baseURI->Resolve(NS_ConvertUTF16toUTF8(anchorText),spec);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
CopyUTF8toUTF16(spec, anchorText);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if (anchor || area || link || xlinkType.EqualsLiteral("simple")) {
|
|
//Remove all the '\t', '\r' and '\n' from 'anchorText'
|
|
anchorText.StripChars(strippedChars);
|
|
|
|
aLocationString = anchorText;
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
// if no link, fail.
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
NS_IMETHODIMP_(void)
|
|
PresShell::DispatchSynthMouseMove(nsGUIEvent *aEvent,
|
|
PRBool aFlushOnHoverChange)
|
|
{
|
|
PRUint32 hoverGenerationBefore = mFrameConstructor->GetHoverGeneration();
|
|
nsEventStatus status;
|
|
nsIView* targetView = nsIView::GetViewFor(aEvent->widget);
|
|
targetView->GetViewManager()->DispatchEvent(aEvent, targetView, &status);
|
|
if (aFlushOnHoverChange &&
|
|
hoverGenerationBefore != mFrameConstructor->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);
|
|
}
|
|
}
|
|
|
|
NS_IMETHODIMP_(void)
|
|
PresShell::ClearMouseCapture(nsIView* 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) {
|
|
nsIView* 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 = PR_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 = PR_FALSE;
|
|
}
|
|
|
|
nsresult
|
|
PresShell::CaptureHistoryState(nsILayoutHistoryState** aState, PRBool aLeavingPage)
|
|
{
|
|
NS_TIME_FUNCTION_MIN(1.0);
|
|
|
|
nsresult rv = NS_OK;
|
|
|
|
NS_PRECONDITION(nsnull != 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
|
|
rv = NS_NewLayoutHistoryState(getter_AddRefs(historyState));
|
|
|
|
if (NS_FAILED(rv)) {
|
|
*aState = nsnull;
|
|
return rv;
|
|
}
|
|
|
|
docShell->SetLayoutHistoryState(historyState);
|
|
}
|
|
|
|
*aState = historyState;
|
|
NS_IF_ADDREF(*aState);
|
|
|
|
// Capture frame state for the entire frame hierarchy
|
|
nsIFrame* rootFrame = FrameManager()->GetRootFrame();
|
|
if (!rootFrame) return NS_OK;
|
|
// Capture frame state for the root scroll frame
|
|
// Don't capture state when first creating doc element hierarchy
|
|
// As the scroll position is 0 and this will cause us to lose
|
|
// our previously saved place!
|
|
if (aLeavingPage) {
|
|
nsIFrame* scrollFrame = GetRootScrollFrame();
|
|
if (scrollFrame) {
|
|
FrameManager()->CaptureFrameStateFor(scrollFrame, historyState,
|
|
nsIStatefulFrame::eDocumentScrollState);
|
|
}
|
|
}
|
|
|
|
FrameManager()->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;
|
|
}
|
|
|
|
mPaintingSuppressed = PR_FALSE;
|
|
nsIFrame* rootFrame = FrameManager()->GetRootFrame();
|
|
if (rootFrame) {
|
|
// let's assume that outline on a root frame is not supported
|
|
nsRect rect(nsPoint(0, 0), rootFrame->GetSize());
|
|
rootFrame->Invalidate(rect);
|
|
|
|
if (mCaretEnabled && mCaret) {
|
|
mCaret->CheckCaretDrawingState();
|
|
}
|
|
|
|
nsRootPresContext* rootPC = mPresContext->GetRootPresContext();
|
|
if (rootPC) {
|
|
rootPC->RequestUpdatePluginGeometry(rootFrame);
|
|
}
|
|
}
|
|
|
|
// now that painting is unsuppressed, focus may be set on the document
|
|
nsPIDOMWindow *win = mDocument->GetWindow();
|
|
if (win)
|
|
win->SetReadyForFocus();
|
|
|
|
if (!mHaveShutDown)
|
|
SynthesizeMouseMove(PR_FALSE);
|
|
}
|
|
|
|
void
|
|
PresShell::UnsuppressPainting()
|
|
{
|
|
if (mPaintSuppressionTimer) {
|
|
mPaintSuppressionTimer->Cancel();
|
|
mPaintSuppressionTimer = nsnull;
|
|
}
|
|
|
|
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.Length() > 0)
|
|
mShouldUnsuppressPainting = PR_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));
|
|
if (NS_UNLIKELY(!result)) {
|
|
return NS_ERROR_OUT_OF_MEMORY;
|
|
}
|
|
nsCallbackEventRequest* request = (nsCallbackEventRequest*)result;
|
|
|
|
request->callback = aCallback;
|
|
request->next = nsnull;
|
|
|
|
if (mLastCallbackEventRequest) {
|
|
mLastCallbackEventRequest = mLastCallbackEventRequest->next = request;
|
|
} else {
|
|
mFirstCallbackEventRequest = request;
|
|
mLastCallbackEventRequest = request;
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
void
|
|
PresShell::CancelReflowCallback(nsIReflowCallback* aCallback)
|
|
{
|
|
nsCallbackEventRequest* before = nsnull;
|
|
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 == nsnull, "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 = nsnull;
|
|
}
|
|
nsIReflowCallback* callback = node->callback;
|
|
FreeMisc(sizeof(nsCallbackEventRequest), node);
|
|
if (callback) {
|
|
callback->ReflowCallbackCanceled();
|
|
}
|
|
}
|
|
}
|
|
|
|
void
|
|
PresShell::HandlePostedReflowCallbacks(PRBool aInterruptible)
|
|
{
|
|
PRBool shouldFlush = PR_FALSE;
|
|
|
|
while (mFirstCallbackEventRequest) {
|
|
nsCallbackEventRequest* node = mFirstCallbackEventRequest;
|
|
mFirstCallbackEventRequest = node->next;
|
|
if (!mFirstCallbackEventRequest) {
|
|
mLastCallbackEventRequest = nsnull;
|
|
}
|
|
nsIReflowCallback* callback = node->callback;
|
|
FreeMisc(sizeof(nsCallbackEventRequest), node);
|
|
if (callback) {
|
|
if (callback->ReflowFinished()) {
|
|
shouldFlush = PR_TRUE;
|
|
}
|
|
}
|
|
}
|
|
|
|
mozFlushType flushType =
|
|
aInterruptible ? Flush_InterruptibleLayout : Flush_Layout;
|
|
if (shouldFlush)
|
|
FlushPendingNotifications(flushType);
|
|
}
|
|
|
|
PRBool
|
|
PresShell::IsSafeToFlush() const
|
|
{
|
|
// Not safe if we are reflowing or in the middle of frame construction
|
|
PRBool isSafeToFlush = !mIsReflowing &&
|
|
!mChangeNestCount;
|
|
|
|
if (isSafeToFlush) {
|
|
// Not safe if we are painting
|
|
nsIViewManager* viewManager = GetViewManager();
|
|
if (viewManager) {
|
|
PRBool isPainting = PR_FALSE;
|
|
viewManager->IsPainting(isPainting);
|
|
if (isPainting) {
|
|
isSafeToFlush = PR_FALSE;
|
|
}
|
|
}
|
|
}
|
|
|
|
return isSafeToFlush;
|
|
}
|
|
|
|
|
|
void
|
|
PresShell::FlushPendingNotifications(mozFlushType aType)
|
|
{
|
|
#ifdef NS_FUNCTION_TIMER
|
|
NS_TIME_FUNCTION_DECLARE_DOCURL;
|
|
static const char *flushTypeNames[] = {
|
|
"Flush_Content",
|
|
"Flush_ContentAndNotify",
|
|
"Flush_Styles",
|
|
"Flush_InterruptibleLayout",
|
|
"Flush_Layout",
|
|
"Flush_Display"
|
|
};
|
|
NS_TIME_FUNCTION_MIN_FMT(1.0, "%s (line %d) (document: %s, type: %s)", MOZ_FUNCTION_NAME,
|
|
__LINE__, docURL__.get(), flushTypeNames[aType - 1]);
|
|
#endif
|
|
|
|
NS_ASSERTION(aType >= Flush_Frames, "Why did we get called?");
|
|
|
|
PRBool isSafeToFlush = IsSafeToFlush();
|
|
|
|
// If layout could possibly trigger scripts, then it's only safe to flush if
|
|
// it's safe to run script.
|
|
PRBool 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 while batching view updates.
|
|
nsCOMPtr<nsIViewManager> 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;
|
|
}
|
|
}
|
|
|
|
// Style reresolves not in conjunction with reflows can't cause
|
|
// painting or geometry changes, so don't bother with view update
|
|
// batching if we only have style reresolve
|
|
nsIViewManager::UpdateViewBatch batch(mViewManager);
|
|
|
|
// 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(aType);
|
|
|
|
// 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(PR_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();
|
|
|
|
#ifdef MOZ_SMIL
|
|
// Flush any requested SMIL samples.
|
|
if (mDocument->HasAnimationController()) {
|
|
mDocument->GetAnimationController()->FlushResampleRequests();
|
|
}
|
|
#endif // MOZ_SMIL
|
|
|
|
nsAutoScriptBlocker scriptBlocker;
|
|
mFrameConstructor->CreateNeededFrames();
|
|
mFrameConstructor->ProcessPendingRestyles();
|
|
}
|
|
|
|
#ifdef MOZ_CSS_ANIMATIONS
|
|
// Dispatch any 'animationstart' events those (or earlier) restyles
|
|
// queued up.
|
|
if (!mIsDestroying) {
|
|
mPresContext->AnimationManager()->DispatchEvents();
|
|
}
|
|
#endif
|
|
|
|
// 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();
|
|
mFrameConstructor->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 (aType >= (mSuppressInterruptibleReflows ? Flush_Layout : Flush_InterruptibleLayout) &&
|
|
!mIsDestroying) {
|
|
mFrameConstructor->RecalcQuotesAndCounters();
|
|
mViewManager->FlushDelayedResize(PR_TRUE);
|
|
if (ProcessReflowCommands(aType < Flush_Layout) && mContentToScrollTo) {
|
|
// We didn't get interrupted. Go ahead and scroll to our content
|
|
DoScrollContentIntoView(mContentToScrollTo, mContentScrollVPosition,
|
|
mContentScrollHPosition,
|
|
mContentToScrollToFlags);
|
|
mContentToScrollTo = nsnull;
|
|
}
|
|
}
|
|
|
|
if (aType >= Flush_Layout) {
|
|
// Flush plugin geometry. Don't flush plugin geometry for
|
|
// interruptible layouts, since WillPaint does an interruptible
|
|
// layout.
|
|
nsRootPresContext* rootPresContext = mPresContext->GetRootPresContext();
|
|
if (rootPresContext) {
|
|
rootPresContext->UpdatePluginGeometry();
|
|
}
|
|
#ifdef DEBUG
|
|
if (!mIsDestroying) {
|
|
nsIView* rootView = mViewManager->GetRootView();
|
|
if (rootView) {
|
|
nsRect bounds = rootView->GetBounds();
|
|
NS_ASSERTION(bounds.Size() == mPresContext->GetVisibleArea().Size(),
|
|
"root view / pres context visible size mismatch");
|
|
}
|
|
}
|
|
#endif
|
|
}
|
|
|
|
PRUint32 updateFlags = NS_VMREFRESH_NO_SYNC;
|
|
if (aType >= Flush_Display) {
|
|
// Flushing paints, so perform the invalidates and drawing
|
|
// immediately
|
|
updateFlags = NS_VMREFRESH_IMMEDIATE;
|
|
}
|
|
batch.EndUpdateViewBatch(updateFlags);
|
|
}
|
|
}
|
|
|
|
void
|
|
PresShell::CharacterDataChanged(nsIDocument *aDocument,
|
|
nsIContent* aContent,
|
|
CharacterDataChangeInfo* aInfo)
|
|
{
|
|
NS_PRECONDITION(!mIsDocumentGone, "Unexpected CharacterDataChanged");
|
|
NS_PRECONDITION(aDocument == mDocument, "Unexpected aDocument");
|
|
|
|
nsAutoCauseReflowNotifier crNotifier(this);
|
|
|
|
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.
|
|
mCaret->InvalidateOutsideCaret();
|
|
}
|
|
|
|
// 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();
|
|
PRUint32 selectorFlags =
|
|
container ? (container->GetFlags() & NODE_ALL_SELECTOR_FLAGS) : 0;
|
|
if (selectorFlags != 0 && !aContent->IsRootOfAnonymousSubtree()) {
|
|
Element* element = container->AsElement();
|
|
if (aInfo->mAppend && !aContent->GetNextSibling())
|
|
mFrameConstructor->RestyleForAppend(element, aContent);
|
|
else
|
|
mFrameConstructor->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 (mDidInitialReflow) {
|
|
nsAutoCauseReflowNotifier crNotifier(this);
|
|
mFrameConstructor->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 (mDidInitialReflow &&
|
|
mStyleSet->HasDocumentStateDependentStyle(mPresContext,
|
|
mDocument->GetRootElement(),
|
|
aStateMask)) {
|
|
mFrameConstructor->PostRestyleEvent(mDocument->GetRootElement(),
|
|
eRestyle_Subtree, NS_STYLE_HINT_NONE);
|
|
VERIFY_STYLE_TREE;
|
|
}
|
|
|
|
if (aStateMask.HasState(NS_DOCUMENT_STATE_WINDOW_INACTIVE)) {
|
|
nsIFrame* root = FrameManager()->GetRootFrame();
|
|
if (root) {
|
|
root->InvalidateFrameSubtree();
|
|
}
|
|
}
|
|
}
|
|
|
|
void
|
|
PresShell::AttributeWillChange(nsIDocument* aDocument,
|
|
Element* aElement,
|
|
PRInt32 aNameSpaceID,
|
|
nsIAtom* aAttribute,
|
|
PRInt32 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 (mDidInitialReflow) {
|
|
nsAutoCauseReflowNotifier crNotifier(this);
|
|
mFrameConstructor->AttributeWillChange(aElement, aNameSpaceID,
|
|
aAttribute, aModType);
|
|
VERIFY_STYLE_TREE;
|
|
}
|
|
}
|
|
|
|
void
|
|
PresShell::AttributeChanged(nsIDocument* aDocument,
|
|
Element* aElement,
|
|
PRInt32 aNameSpaceID,
|
|
nsIAtom* aAttribute,
|
|
PRInt32 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 (mDidInitialReflow) {
|
|
nsAutoCauseReflowNotifier crNotifier(this);
|
|
mFrameConstructor->AttributeChanged(aElement, aNameSpaceID,
|
|
aAttribute, aModType);
|
|
VERIFY_STYLE_TREE;
|
|
}
|
|
}
|
|
|
|
void
|
|
PresShell::ContentAppended(nsIDocument *aDocument,
|
|
nsIContent* aContainer,
|
|
nsIContent* aFirstNewContent,
|
|
PRInt32 aNewIndexInContainer)
|
|
{
|
|
NS_PRECONDITION(!mIsDocumentGone, "Unexpected ContentAppended");
|
|
NS_PRECONDITION(aDocument == mDocument, "Unexpected aDocument");
|
|
NS_PRECONDITION(aContainer, "must have container");
|
|
|
|
if (!mDidInitialReflow) {
|
|
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.
|
|
mFrameConstructor->RestyleForAppend(aContainer->AsElement(), aFirstNewContent);
|
|
|
|
mFrameConstructor->ContentAppended(aContainer, aFirstNewContent, PR_TRUE);
|
|
VERIFY_STYLE_TREE;
|
|
}
|
|
|
|
void
|
|
PresShell::ContentInserted(nsIDocument* aDocument,
|
|
nsIContent* aContainer,
|
|
nsIContent* aChild,
|
|
PRInt32 aIndexInContainer)
|
|
{
|
|
NS_PRECONDITION(!mIsDocumentGone, "Unexpected ContentInserted");
|
|
NS_PRECONDITION(aDocument == mDocument, "Unexpected aDocument");
|
|
|
|
if (!mDidInitialReflow) {
|
|
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)
|
|
mFrameConstructor->RestyleForInsertOrChange(aContainer->AsElement(), aChild);
|
|
|
|
mFrameConstructor->ContentInserted(aContainer, aChild, nsnull, PR_TRUE);
|
|
VERIFY_STYLE_TREE;
|
|
}
|
|
|
|
void
|
|
PresShell::ContentRemoved(nsIDocument *aDocument,
|
|
nsIContent* aContainer,
|
|
nsIContent* aChild,
|
|
PRInt32 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.
|
|
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 = nsnull;
|
|
}
|
|
|
|
if (aContainer)
|
|
mFrameConstructor->RestyleForRemove(aContainer->AsElement(), aChild,
|
|
oldNextSibling);
|
|
|
|
PRBool didReconstruct;
|
|
mFrameConstructor->ContentRemoved(aContainer, aChild, oldNextSibling,
|
|
nsCSSFrameConstructor::REMOVE_CONTENT,
|
|
&didReconstruct);
|
|
|
|
VERIFY_STYLE_TREE;
|
|
}
|
|
|
|
nsresult
|
|
PresShell::ReconstructFrames(void)
|
|
{
|
|
NS_PRECONDITION(!FrameManager()->GetRootFrame() || mDidInitialReflow,
|
|
"Must not have root frame before initial reflow");
|
|
if (!mDidInitialReflow) {
|
|
// 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()
|
|
{
|
|
mStylesHaveChanged = PR_FALSE;
|
|
|
|
if (mIsDestroying) {
|
|
// We don't want to mess with restyles at this point
|
|
return;
|
|
}
|
|
|
|
if (mPresContext) {
|
|
mPresContext->RebuildUserFontSet();
|
|
#ifdef MOZ_CSS_ANIMATIONS
|
|
mPresContext->AnimationManager()->KeyframesListIsDirty();
|
|
#endif
|
|
}
|
|
|
|
Element* root = mDocument->GetRootElement();
|
|
if (!mDidInitialReflow) {
|
|
// Nothing to do here, since we have no frames yet
|
|
return;
|
|
}
|
|
|
|
if (!root) {
|
|
// No content to restyle
|
|
return;
|
|
}
|
|
|
|
mFrameConstructor->PostRestyleEvent(root, eRestyle_Subtree, NS_STYLE_HINT_NONE);
|
|
}
|
|
|
|
void
|
|
nsIPresShell::ReconstructStyleDataExternal()
|
|
{
|
|
ReconstructStyleDataInternal();
|
|
}
|
|
|
|
void
|
|
PresShell::StyleSheetAdded(nsIDocument *aDocument,
|
|
nsIStyleSheet* aStyleSheet,
|
|
PRBool aDocumentSheet)
|
|
{
|
|
// We only care when enabled sheets are added
|
|
NS_PRECONDITION(aStyleSheet, "Must have a style sheet!");
|
|
|
|
if (aStyleSheet->IsApplicable() && aStyleSheet->HasRules()) {
|
|
mStylesHaveChanged = PR_TRUE;
|
|
}
|
|
}
|
|
|
|
void
|
|
PresShell::StyleSheetRemoved(nsIDocument *aDocument,
|
|
nsIStyleSheet* aStyleSheet,
|
|
PRBool aDocumentSheet)
|
|
{
|
|
// We only care when enabled sheets are removed
|
|
NS_PRECONDITION(aStyleSheet, "Must have a style sheet!");
|
|
|
|
if (aStyleSheet->IsApplicable() && aStyleSheet->HasRules()) {
|
|
mStylesHaveChanged = PR_TRUE;
|
|
}
|
|
}
|
|
|
|
void
|
|
PresShell::StyleSheetApplicableStateChanged(nsIDocument *aDocument,
|
|
nsIStyleSheet* aStyleSheet,
|
|
PRBool aApplicable)
|
|
{
|
|
if (aStyleSheet->HasRules()) {
|
|
mStylesHaveChanged = PR_TRUE;
|
|
}
|
|
}
|
|
|
|
void
|
|
PresShell::StyleRuleChanged(nsIDocument *aDocument,
|
|
nsIStyleSheet* aStyleSheet,
|
|
nsIStyleRule* aOldStyleRule,
|
|
nsIStyleRule* aNewStyleRule)
|
|
{
|
|
mStylesHaveChanged = PR_TRUE;
|
|
}
|
|
|
|
void
|
|
PresShell::StyleRuleAdded(nsIDocument *aDocument,
|
|
nsIStyleSheet* aStyleSheet,
|
|
nsIStyleRule* aStyleRule)
|
|
{
|
|
mStylesHaveChanged = PR_TRUE;
|
|
}
|
|
|
|
void
|
|
PresShell::StyleRuleRemoved(nsIDocument *aDocument,
|
|
nsIStyleSheet* aStyleSheet,
|
|
nsIStyleRule* aStyleRule)
|
|
{
|
|
mStylesHaveChanged = PR_TRUE;
|
|
}
|
|
|
|
nsIFrame*
|
|
PresShell::GetRealPrimaryFrameFor(nsIContent* aContent) const
|
|
{
|
|
if (aContent->GetDocument() != GetDocument()) {
|
|
return nsnull;
|
|
}
|
|
nsIFrame *primaryFrame = aContent->GetPrimaryFrame();
|
|
if (!primaryFrame)
|
|
return nsnull;
|
|
return nsPlaceholderFrame::GetRealFrameFor(primaryFrame);
|
|
}
|
|
|
|
nsIFrame*
|
|
PresShell::GetPlaceholderFrameFor(nsIFrame* aFrame) const
|
|
{
|
|
return FrameManager()->GetPlaceholderFrameFor(aFrame);
|
|
}
|
|
|
|
nsresult
|
|
PresShell::RenderDocument(const nsRect& aRect, PRUint32 aFlags,
|
|
nscolor aBackgroundColor,
|
|
gfxContext* aThebesContext)
|
|
{
|
|
NS_TIME_FUNCTION_WITH_DOCURL;
|
|
|
|
NS_ENSURE_TRUE(!(aFlags & RENDER_IS_UNTRUSTED), NS_ERROR_NOT_IMPLEMENTED);
|
|
|
|
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, PR_TRUE);
|
|
#else
|
|
aThebesContext->Rectangle(r);
|
|
#endif
|
|
|
|
nsIFrame* rootFrame = FrameManager()->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)
|
|
PRBool 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);
|
|
|
|
PRBool wouldFlushRetainedLayers = PR_FALSE;
|
|
PRUint32 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.
|
|
nsIView* view = rootFrame->GetView();
|
|
if (view && view->GetWidget() &&
|
|
nsLayoutUtils::GetDisplayRootFrame(rootFrame) == rootFrame) {
|
|
flags |= nsLayoutUtils::PAINT_WIDGET_LAYERS;
|
|
}
|
|
}
|
|
if (!(aFlags & RENDER_CARET)) {
|
|
wouldFlushRetainedLayers = PR_TRUE;
|
|
flags |= nsLayoutUtils::PAINT_HIDE_CARET;
|
|
}
|
|
if (aFlags & RENDER_IGNORE_VIEWPORT_SCROLLING) {
|
|
wouldFlushRetainedLayers = !IgnoringViewportScrolling();
|
|
mRenderFlags = ChangeFlag(mRenderFlags, PR_TRUE, STATE_IGNORING_VIEWPORT_SCROLLING);
|
|
}
|
|
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 = PR_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,
|
|
nsIRange* aRange)
|
|
{
|
|
NS_TIME_FUNCTION_WITH_DOCURL;
|
|
|
|
// 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, wrap it in an nsDisplayClip to clip the display 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 = nsnull;
|
|
nsIFrame* frame = i->GetUnderlyingFrame();
|
|
if (frame) {
|
|
nsIContent* content = frame->GetContent();
|
|
if (content) {
|
|
PRBool atStart = (content == aRange->GetStartParent());
|
|
PRBool atEnd = (content == aRange->GetEndParent());
|
|
if ((atStart || atEnd) && frame->GetType() == nsGkAtoms::textFrame) {
|
|
PRInt32 frameStartOffset, frameEndOffset;
|
|
frame->GetOffsets(frameStartOffset, frameEndOffset);
|
|
|
|
PRInt32 hilightStart =
|
|
atStart ? NS_MAX(aRange->StartOffset(), frameStartOffset) : frameStartOffset;
|
|
PRInt32 hilightEnd =
|
|
atEnd ? NS_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 = NS_MIN(startPoint.x, endPoint.x);
|
|
textRect.x += x;
|
|
textRect.width = NS_MAX(startPoint.x, endPoint.x) - x;
|
|
surfaceRect.UnionRect(surfaceRect, textRect);
|
|
|
|
// wrap the item in an nsDisplayClip so that it can be clipped to
|
|
// the selection. If the allocation fails, fall through and delete
|
|
// the item below.
|
|
itemToInsert = new (aBuilder)
|
|
nsDisplayClip(aBuilder, frame, i, textRect);
|
|
}
|
|
}
|
|
// 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
|
|
PRBool before, after;
|
|
nsresult rv =
|
|
nsRange::CompareNodeToRange(content, aRange, &before, &after);
|
|
if (NS_SUCCEEDED(rv) && !before && !after) {
|
|
itemToInsert = i;
|
|
surfaceRect.UnionRect(surfaceRect, i->GetBounds(aBuilder));
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// insert the item into the list if necessary. If the item has a child
|
|
// list, insert that as well
|
|
nsDisplayList* sublist = i->GetList();
|
|
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 PRBool gDumpRangePaintList = PR_FALSE;
|
|
#endif
|
|
|
|
RangePaintInfo*
|
|
PresShell::CreateRangePaintInfo(nsIDOMRange* aRange,
|
|
nsRect& aSurfaceRect,
|
|
PRBool aForPrimarySelection)
|
|
{
|
|
NS_TIME_FUNCTION_WITH_DOCURL;
|
|
|
|
RangePaintInfo* info = nsnull;
|
|
|
|
nsCOMPtr<nsIRange> range = do_QueryInterface(aRange);
|
|
if (!range)
|
|
return nsnull;
|
|
|
|
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 nsnull;
|
|
|
|
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 nsnull;
|
|
|
|
info = new RangePaintInfo(range, ancestorFrame);
|
|
if (!info)
|
|
return nsnull;
|
|
|
|
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)
|
|
{
|
|
NS_TIME_FUNCTION_WITH_DOCURL;
|
|
|
|
nsPresContext* pc = GetPresContext();
|
|
if (!pc || aArea.width == 0 || aArea.height == 0)
|
|
return nsnull;
|
|
|
|
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);
|
|
PRBool 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 = NS_MIN(scale, float(maxWidth) / pixelArea.width);
|
|
if (pixelArea.height > maxHeight)
|
|
scale = NS_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;
|
|
|
|
gfxImageSurface* surface =
|
|
new gfxImageSurface(gfxIntSize(pixelArea.width, pixelArea.height),
|
|
gfxImageSurface::ImageFormatARGB32);
|
|
if (!surface || surface->CairoStatus()) {
|
|
delete surface;
|
|
return nsnull;
|
|
}
|
|
|
|
// 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) {
|
|
nsCOMPtr<nsISelectionPrivate> selpriv = do_QueryInterface(aSelection);
|
|
selpriv->GetFrameSelection(getter_AddRefs(frameSelection));
|
|
}
|
|
else {
|
|
frameSelection = FrameSelection();
|
|
}
|
|
PRInt16 oldDisplaySelection = frameSelection->GetDisplaySelection();
|
|
frameSelection->SetDisplaySelection(nsISelectionController::SELECTION_HIDDEN);
|
|
|
|
// next, paint each range in the selection
|
|
PRInt32 count = aItems->Length();
|
|
for (PRInt32 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);
|
|
|
|
NS_ADDREF(surface);
|
|
return surface;
|
|
}
|
|
|
|
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 nsnull;
|
|
|
|
nsCOMPtr<nsIDOMRange> range;
|
|
NS_NewRange(getter_AddRefs(range));
|
|
if (NS_FAILED(range->SelectNode(aNode)))
|
|
return nsnull;
|
|
|
|
RangePaintInfo* info = CreateRangePaintInfo(range, area, PR_FALSE);
|
|
if (info && !rangeItems.AppendElement(info)) {
|
|
delete info;
|
|
return nsnull;
|
|
}
|
|
|
|
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 nsnull;
|
|
|
|
// 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, nsnull, 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
|
|
PRInt32 numRanges;
|
|
aSelection->GetRangeCount(&numRanges);
|
|
NS_ASSERTION(numRanges > 0, "RenderSelection called with no selection");
|
|
|
|
for (PRInt32 r = 0; r < numRanges; r++)
|
|
{
|
|
nsCOMPtr<nsIDOMRange> range;
|
|
aSelection->GetRangeAt(r, getter_AddRefs(range));
|
|
|
|
RangePaintInfo* info = CreateRangePaintInfo(range, area, PR_TRUE);
|
|
if (info && !rangeItems.AppendElement(info)) {
|
|
delete info;
|
|
return nsnull;
|
|
}
|
|
}
|
|
|
|
return PaintRangePaintInfo(&rangeItems, aSelection, nsnull, area, aPoint,
|
|
aScreenRect);
|
|
}
|
|
|
|
nsresult
|
|
PresShell::AddPrintPreviewBackgroundItem(nsDisplayListBuilder& aBuilder,
|
|
nsDisplayList& aList,
|
|
nsIFrame* aFrame,
|
|
const nsRect& aBounds)
|
|
{
|
|
return aList.AppendNewToBottom(new (&aBuilder)
|
|
nsDisplaySolidColor(&aBuilder, aFrame, aBounds, NS_RGB(115, 115, 115)));
|
|
}
|
|
|
|
static PRBool
|
|
AddCanvasBackgroundColor(const nsDisplayList& aList, nsIFrame* aCanvasFrame,
|
|
nscolor aColor)
|
|
{
|
|
for (nsDisplayItem* i = aList.GetBottom(); i; i = i->GetAbove()) {
|
|
if (i->GetUnderlyingFrame() == aCanvasFrame &&
|
|
i->GetType() == nsDisplayItem::TYPE_CANVAS_BACKGROUND) {
|
|
nsDisplayCanvasBackground* bg = static_cast<nsDisplayCanvasBackground*>(i);
|
|
bg->SetExtraBackgroundColor(aColor);
|
|
return PR_TRUE;
|
|
}
|
|
nsDisplayList* sublist = i->GetList();
|
|
if (sublist && AddCanvasBackgroundColor(*sublist, aCanvasFrame, aColor))
|
|
return PR_TRUE;
|
|
}
|
|
return PR_FALSE;
|
|
}
|
|
|
|
nsresult PresShell::AddCanvasBackgroundColorItem(nsDisplayListBuilder& aBuilder,
|
|
nsDisplayList& aList,
|
|
nsIFrame* aFrame,
|
|
const nsRect& aBounds,
|
|
nscolor aBackstopColor,
|
|
PRUint32 aFlags)
|
|
{
|
|
// 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 NS_OK;
|
|
}
|
|
|
|
nscolor bgcolor = NS_ComposeColors(aBackstopColor, mCanvasBackgroundColor);
|
|
if (NS_GET_A(bgcolor) == 0)
|
|
return NS_OK;
|
|
|
|
// 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 NS_OK;
|
|
}
|
|
}
|
|
}
|
|
|
|
return aList.AppendNewToBottom(
|
|
new (&aBuilder) nsDisplaySolidColor(&aBuilder, aFrame, aBounds, bgcolor));
|
|
}
|
|
|
|
static PRBool IsTransparentContainerElement(nsPresContext* aPresContext)
|
|
{
|
|
nsCOMPtr<nsISupports> container = aPresContext->GetContainerInternal();
|
|
nsCOMPtr<nsIDocShellTreeItem> docShellItem = do_QueryInterface(container);
|
|
nsCOMPtr<nsPIDOMWindow> pwin(do_GetInterface(docShellItem));
|
|
if (!pwin)
|
|
return PR_FALSE;
|
|
nsCOMPtr<nsIContent> containerElement =
|
|
do_QueryInterface(pwin->GetFrameElementInternal());
|
|
return containerElement &&
|
|
containerElement->HasAttr(kNameSpaceID_None, nsGkAtoms::transparent);
|
|
}
|
|
|
|
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.
|
|
mCanvasBackgroundColor =
|
|
nsCSSRendering::DetermineBackgroundColor(mPresContext, bgStyle,
|
|
rootStyleFrame);
|
|
if (GetPresContext()->IsRootContentDocument() &&
|
|
!IsTransparentContainerElement(mPresContext)) {
|
|
mCanvasBackgroundColor =
|
|
NS_ComposeColors(mPresContext->DefaultBackgroundColor(), 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 = mPresContext->DefaultBackgroundColor();
|
|
}
|
|
}
|
|
|
|
nscolor PresShell::ComputeBackstopColor(nsIView* aDisplayRoot)
|
|
{
|
|
nsIWidget* widget = aDisplayRoot->GetWidget();
|
|
if (widget && widget->GetTransparencyMode() != eTransparencyOpaque) {
|
|
// 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 GetPresContext()->DefaultBackgroundColor();
|
|
}
|
|
|
|
struct PaintParams {
|
|
nscolor mBackgroundColor;
|
|
};
|
|
|
|
LayerManager* PresShell::GetLayerManager()
|
|
{
|
|
NS_ASSERTION(mViewManager, "Should have view manager");
|
|
|
|
nsIView* rootView = mViewManager->GetRootView();
|
|
if (rootView) {
|
|
if (nsIWidget* widget = rootView->GetWidget()) {
|
|
return widget->GetLayerManager();
|
|
}
|
|
}
|
|
return nsnull;
|
|
}
|
|
|
|
void PresShell::SetIgnoreViewportScrolling(PRBool 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 && aXResolution > 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(PRBool aFromScroll)
|
|
{
|
|
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 (NS_FAILED(NS_DispatchToCurrentThread(ev))) {
|
|
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 nsIView* FindFloatingViewContaining(nsIView* aView, nsPoint aPt)
|
|
{
|
|
if (aView->GetVisibility() == nsViewVisibility_kHide)
|
|
// No need to look into descendants.
|
|
return nsnull;
|
|
|
|
nsIFrame* frame = static_cast<nsIFrame*>(aView->GetClientData());
|
|
if (frame && !frame->PresContext()->PresShell()->IsActive()) {
|
|
return nsnull;
|
|
}
|
|
|
|
for (nsIView* v = aView->GetFirstChild(); v; v = v->GetNextSibling()) {
|
|
nsIView* r = FindFloatingViewContaining(v, v->ConvertFromParentCoords(aPt));
|
|
if (r)
|
|
return r;
|
|
}
|
|
|
|
if (aView->GetFloating() && aView->HasWidget() &&
|
|
aView->GetDimensions().Contains(aPt))
|
|
return aView;
|
|
|
|
return nsnull;
|
|
}
|
|
|
|
/*
|
|
* 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 nsIView* FindViewContaining(nsIView* aView, nsPoint aPt)
|
|
{
|
|
if (!aView->GetDimensions().Contains(aPt) ||
|
|
aView->GetVisibility() == nsViewVisibility_kHide) {
|
|
return nsnull;
|
|
}
|
|
|
|
nsIFrame* frame = static_cast<nsIFrame*>(aView->GetClientData());
|
|
if (frame && !frame->PresContext()->PresShell()->IsActive()) {
|
|
return nsnull;
|
|
}
|
|
|
|
for (nsIView* v = aView->GetFirstChild(); v; v = v->GetNextSibling()) {
|
|
nsIView* r = FindViewContaining(v, v->ConvertFromParentCoords(aPt));
|
|
if (r)
|
|
return r;
|
|
}
|
|
|
|
return aView;
|
|
}
|
|
|
|
void
|
|
PresShell::ProcessSynthMouseMoveEvent(PRBool aFromScroll)
|
|
{
|
|
// 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();
|
|
}
|
|
|
|
nsIView* rootView = mViewManager ? mViewManager->GetRootView() : nsnull;
|
|
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
|
|
|
|
PRInt32 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.
|
|
nsIView* view = nsnull;
|
|
|
|
// The appunits per devpixel ratio of |view|.
|
|
PRInt32 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.
|
|
nsIViewManager *pointVM = nsnull;
|
|
|
|
// 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;
|
|
nsIView *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 = static_cast<nsIFrame*>(view->GetClientData());
|
|
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(PR_TRUE, NS_MOUSE_MOVE, view->GetWidget(),
|
|
nsMouseEvent::eSynthesized);
|
|
event.refPoint = refpoint.ToNearestPixels(viewAPD);
|
|
event.time = PR_IntervalNow();
|
|
// XXX set event.isShift, event.isControl, event.isAlt, event.isMeta ?
|
|
|
|
nsCOMPtr<nsIViewObserver> observer = pointVM->GetViewObserver();
|
|
if (observer) {
|
|
observer->DispatchSynthMouseMove(&event, !aFromScroll);
|
|
}
|
|
|
|
if (!aFromScroll) {
|
|
mSynthMouseMoveEvent.Forget();
|
|
}
|
|
}
|
|
|
|
static void DrawThebesLayer(ThebesLayer* aLayer,
|
|
gfxContext* aContext,
|
|
const nsIntRegion& aRegionToDraw,
|
|
const nsIntRegion& aRegionToInvalidate,
|
|
void* aCallbackData)
|
|
{
|
|
PaintParams* params = static_cast<PaintParams*>(aCallbackData);
|
|
aContext->NewPath();
|
|
aContext->SetColor(gfxRGBA(params->mBackgroundColor));
|
|
nsIntRect dirtyRect = aRegionToDraw.GetBounds();
|
|
aContext->Rectangle(
|
|
gfxRect(dirtyRect.x, dirtyRect.y, dirtyRect.width, dirtyRect.height));
|
|
aContext->Fill();
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
PresShell::Paint(nsIView* aViewToPaint,
|
|
nsIWidget* aWidgetToPaint,
|
|
const nsRegion& aDirtyRegion,
|
|
const nsIntRegion& aIntDirtyRegion,
|
|
PRBool aPaintDefaultBackground,
|
|
PRBool aWillSendDidPaint)
|
|
{
|
|
#ifdef NS_FUNCTION_TIMER
|
|
NS_TIME_FUNCTION_DECLARE_DOCURL;
|
|
const nsRect& bounds__ = aDirtyRegion.GetBounds();
|
|
NS_TIME_FUNCTION_MIN_FMT(1.0, "%s (line %d) (document: %s, dirty rect: (<%f, %f>, <%f, %f>)",
|
|
MOZ_FUNCTION_NAME, __LINE__, docURL__.get(),
|
|
NSCoordToFloat(bounds__.x),
|
|
NSCoordToFloat(bounds__.y),
|
|
NSCoordToFloat(bounds__.XMost()),
|
|
NSCoordToFloat(bounds__.YMost()));
|
|
#endif
|
|
|
|
NS_ASSERTION(!mIsDestroying, "painting a destroyed PresShell");
|
|
NS_ASSERTION(aViewToPaint, "null view");
|
|
NS_ASSERTION(aWidgetToPaint, "Can't paint without a widget");
|
|
|
|
nsPresContext* presContext = GetPresContext();
|
|
AUTO_LAYOUT_PHASE_ENTRY_POINT(presContext, Paint);
|
|
|
|
nsIFrame* frame = aPaintDefaultBackground
|
|
? nsnull : static_cast<nsIFrame*>(aViewToPaint->GetClientData());
|
|
|
|
bool isRetainingManager;
|
|
LayerManager* layerManager =
|
|
aWidgetToPaint->GetLayerManager(&isRetainingManager);
|
|
NS_ASSERTION(layerManager, "Must be in paint event");
|
|
layerManager->BeginTransaction();
|
|
|
|
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 (!(frame->GetStateBits() & NS_FRAME_UPDATE_LAYER_TREE)) {
|
|
if (layerManager->EndEmptyTransaction()) {
|
|
frame->UpdatePaintCountForPaintedPresShells();
|
|
presContext->NotifyDidPaintForSubtree();
|
|
|
|
return NS_OK;
|
|
}
|
|
}
|
|
|
|
|
|
frame->RemoveStateBits(NS_FRAME_UPDATE_LAYER_TREE);
|
|
}
|
|
if (frame) {
|
|
frame->ClearPresShellsFromLastPaint();
|
|
}
|
|
|
|
nscolor bgcolor = ComputeBackstopColor(aViewToPaint);
|
|
|
|
if (frame) {
|
|
// Defer invalidates that are triggered during painting, and discard
|
|
// invalidates of areas that are already being repainted.
|
|
// The layer system can trigger invalidates during painting
|
|
// (see FrameLayerBuilder).
|
|
frame->BeginDeferringInvalidatesForDisplayRoot(aDirtyRegion);
|
|
|
|
// We can paint directly into the widget using its layer manager.
|
|
// When we get rid of child widgets, this will be the only path we
|
|
// need. (aPaintDefaultBackground will never be needed since the
|
|
// chrome can always paint a default background.)
|
|
nsLayoutUtils::PaintFrame(nsnull, frame, aDirtyRegion, bgcolor,
|
|
nsLayoutUtils::PAINT_WIDGET_LAYERS |
|
|
nsLayoutUtils::PAINT_EXISTING_TRANSACTION);
|
|
|
|
frame->EndDeferringInvalidatesForDisplayRoot();
|
|
presContext->NotifyDidPaintForSubtree();
|
|
return NS_OK;
|
|
}
|
|
|
|
nsRefPtr<ThebesLayer> root = layerManager->CreateThebesLayer();
|
|
if (root) {
|
|
root->SetVisibleRegion(aIntDirtyRegion);
|
|
layerManager->SetRoot(root);
|
|
}
|
|
bgcolor = NS_ComposeColors(bgcolor, mCanvasBackgroundColor);
|
|
PaintParams params = { bgcolor };
|
|
layerManager->EndTransaction(DrawThebesLayer, ¶ms);
|
|
|
|
presContext->NotifyDidPaintForSubtree();
|
|
return NS_OK;
|
|
}
|
|
|
|
// static
|
|
void
|
|
nsIPresShell::SetCapturingContent(nsIContent* aContent, PRUint8 aFlags)
|
|
{
|
|
NS_IF_RELEASE(gCaptureInfo.mContent);
|
|
|
|
// only set capturing content if allowed or the CAPTURE_IGNOREALLOWED flag
|
|
// is used
|
|
if ((aFlags & CAPTURE_IGNOREALLOWED) || gCaptureInfo.mAllowed) {
|
|
if (aContent) {
|
|
NS_ADDREF(gCaptureInfo.mContent = aContent);
|
|
}
|
|
gCaptureInfo.mRetargetToElement = (aFlags & CAPTURE_RETARGETTOELEMENT) != 0;
|
|
gCaptureInfo.mPreventDrag = (aFlags & CAPTURE_PREVENTDRAG) != 0;
|
|
}
|
|
}
|
|
|
|
nsIFrame*
|
|
PresShell::GetCurrentEventFrame()
|
|
{
|
|
if (NS_UNLIKELY(mIsDestroying)) {
|
|
return nsnull;
|
|
}
|
|
|
|
if (!mCurrentEventFrame && mCurrentEventContent) {
|
|
// Make sure the content still has a document reference. If not,
|
|
// then we assume it is no longer in the content tree and the
|
|
// frame shouldn't get an event, nor should we even assume its
|
|
// safe to try and find the frame.
|
|
if (mCurrentEventContent->GetDocument()) {
|
|
mCurrentEventFrame = mCurrentEventContent->GetPrimaryFrame();
|
|
}
|
|
}
|
|
|
|
return mCurrentEventFrame;
|
|
}
|
|
|
|
nsIFrame*
|
|
PresShell::GetEventTargetFrame()
|
|
{
|
|
return GetCurrentEventFrame();
|
|
}
|
|
|
|
already_AddRefed<nsIContent>
|
|
PresShell::GetEventTargetContent(nsEvent* aEvent)
|
|
{
|
|
nsIContent* content = nsnull;
|
|
|
|
if (mCurrentEventContent) {
|
|
content = mCurrentEventContent;
|
|
NS_IF_ADDREF(content);
|
|
} else {
|
|
nsIFrame* currentEventFrame = GetCurrentEventFrame();
|
|
if (currentEventFrame) {
|
|
currentEventFrame->GetContentForEvent(mPresContext, aEvent, &content);
|
|
} else {
|
|
content = nsnull;
|
|
}
|
|
}
|
|
return content;
|
|
}
|
|
|
|
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 = nsnull;
|
|
mCurrentEventContent = nsnull;
|
|
|
|
if (0 != mCurrentEventFrameStack.Length()) {
|
|
mCurrentEventFrame = mCurrentEventFrameStack.ElementAt(0);
|
|
mCurrentEventFrameStack.RemoveElementAt(0);
|
|
mCurrentEventContent = mCurrentEventContentStack.ObjectAt(0);
|
|
mCurrentEventContentStack.RemoveObjectAt(0);
|
|
}
|
|
}
|
|
|
|
PRBool 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, nsnull);
|
|
return parent->GetRootWindow();
|
|
}
|
|
|
|
already_AddRefed<nsIPresShell>
|
|
PresShell::GetParentPresShell()
|
|
{
|
|
NS_ENSURE_TRUE(mPresContext, nsnull);
|
|
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, nsnull);
|
|
|
|
nsCOMPtr<nsIDocShellTreeItem> parentTreeItem;
|
|
treeItem->GetParent(getter_AddRefs(parentTreeItem));
|
|
nsCOMPtr<nsIDocShell> parentDocShell = do_QueryInterface(parentTreeItem);
|
|
NS_ENSURE_TRUE(parentDocShell && treeItem != parentTreeItem, nsnull);
|
|
|
|
nsIPresShell* parentPresShell = nsnull;
|
|
parentDocShell->GetPresShell(&parentPresShell);
|
|
return parentPresShell;
|
|
}
|
|
|
|
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);
|
|
nsCOMPtr<nsIViewObserver> parentViewObserver =
|
|
do_QueryInterface(parentPresShell);
|
|
if (!parentViewObserver) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
// Fake the event as though it'ss from the parent pres shell's root view.
|
|
nsIView *parentRootView = parentPresShell->GetViewManager()->GetRootView();
|
|
|
|
return parentViewObserver->HandleEvent(parentRootView, aEvent, PR_TRUE, aEventStatus);
|
|
}
|
|
|
|
void
|
|
PresShell::DisableNonTestMouseEvents(PRBool aDisable)
|
|
{
|
|
sDisableNonTestMouseEvents = aDisable;
|
|
}
|
|
|
|
already_AddRefed<nsPIDOMWindow>
|
|
PresShell::GetFocusedDOMWindowInOurWindow()
|
|
{
|
|
nsCOMPtr<nsPIDOMWindow> rootWindow = GetRootWindow();
|
|
NS_ENSURE_TRUE(rootWindow, nsnull);
|
|
nsPIDOMWindow* focusedWindow;
|
|
nsFocusManager::GetFocusedDescendant(rootWindow, PR_TRUE, &focusedWindow);
|
|
return focusedWindow;
|
|
}
|
|
|
|
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) {
|
|
nsIView* 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(PR_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
|
|
}
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
PresShell::HandleEvent(nsIView *aView,
|
|
nsGUIEvent* aEvent,
|
|
PRBool aDontRetargetEvents,
|
|
nsEventStatus* aEventStatus)
|
|
{
|
|
NS_ASSERTION(aView, "null view");
|
|
|
|
if (mIsDestroying ||
|
|
(sDisableNonTestMouseEvents && NS_IS_MOUSE_EVENT(aEvent) &&
|
|
!(aEvent->flags & NS_EVENT_FLAG_SYNTHETIC_TEST_EVENT))) {
|
|
return NS_OK;
|
|
}
|
|
|
|
RecordMouseLocation(aEvent);
|
|
|
|
#ifdef ACCESSIBILITY
|
|
if (aEvent->eventStructType == NS_ACCESSIBLE_EVENT) {
|
|
NS_TIME_FUNCTION_MIN(1.0);
|
|
|
|
// Accessibility events come through OS requests and not from scripts,
|
|
// so it is safe to handle here
|
|
return HandleEventInternal(aEvent, aView, aEventStatus);
|
|
}
|
|
#endif
|
|
|
|
if (!nsContentUtils::IsSafeToRunScript())
|
|
return NS_OK;
|
|
|
|
NS_TIME_FUNCTION_MIN(1.0);
|
|
|
|
nsIContent* capturingContent =
|
|
NS_IS_MOUSE_EVENT(aEvent) ? GetCapturingContent() : nsnull;
|
|
|
|
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 = do_QueryInterface(window->GetExtantDocument());
|
|
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();
|
|
}
|
|
|
|
if (retargetEventDoc) {
|
|
nsIPresShell* presShell = retargetEventDoc->GetShell();
|
|
if (!presShell)
|
|
return NS_OK;
|
|
|
|
if (presShell != this) {
|
|
nsCOMPtr<nsIViewObserver> viewObserver = do_QueryInterface(presShell);
|
|
if (!viewObserver)
|
|
return NS_ERROR_FAILURE;
|
|
|
|
nsIView* view = presShell->GetViewManager()->GetRootView();
|
|
return viewObserver->HandleEvent(view, aEvent, PR_TRUE, aEventStatus);
|
|
}
|
|
}
|
|
}
|
|
|
|
// Check for a theme change up front, since the frame type is irrelevant
|
|
if (aEvent->message == NS_THEMECHANGED && mPresContext) {
|
|
mPresContext->ThemeChanged();
|
|
return NS_OK;
|
|
}
|
|
|
|
if (aEvent->message == NS_UISTATECHANGED && mDocument) {
|
|
nsPIDOMWindow* win = mDocument->GetWindow();
|
|
if (win) {
|
|
nsUIStateChangeEvent* event = (nsUIStateChangeEvent*)aEvent;
|
|
win->SetKeyboardIndicators(event->showAccelerators, event->showFocusRings);
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
// Check for a system color change up front, since the frame type is
|
|
// irrelevant
|
|
if ((aEvent->message == NS_SYSCOLORCHANGED) && mPresContext) {
|
|
nsIViewManager* vm = GetViewManager();
|
|
if (vm) {
|
|
// Only dispatch system color change when the message originates from
|
|
// from the root views widget. This is necessary to prevent us from
|
|
// dispatching the SysColorChanged notification for each child window
|
|
// which may be redundant.
|
|
nsIView* view = vm->GetRootView();
|
|
if (view == aView) {
|
|
*aEventStatus = nsEventStatus_eConsumeDoDefault;
|
|
mPresContext->SysColorChanged();
|
|
return NS_OK;
|
|
}
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
if (aEvent->eventStructType == NS_KEY_EVENT &&
|
|
mDocument && mDocument->EventHandlingSuppressed()) {
|
|
if (aEvent->message == NS_KEY_DOWN) {
|
|
mNoDelayedKeyEvents = PR_TRUE;
|
|
} else if (!mNoDelayedKeyEvents) {
|
|
nsDelayedEvent* event =
|
|
new nsDelayedKeyEvent(static_cast<nsKeyEvent*>(aEvent));
|
|
if (event && !mDelayedEvents.AppendElement(event)) {
|
|
delete event;
|
|
}
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
nsIFrame* frame = static_cast<nsIFrame*>(aView->GetClientData());
|
|
PRBool dispatchUsingCoordinates = NS_IsEventUsingCoordinates(aEvent);
|
|
|
|
// if this event has no frame, we need to retarget it at a parent
|
|
// view that has a frame.
|
|
if (!frame &&
|
|
(dispatchUsingCoordinates || NS_IS_KEY_EVENT(aEvent) ||
|
|
NS_IS_IME_RELATED_EVENT(aEvent) ||
|
|
NS_IS_NON_RETARGETED_PLUGIN_EVENT(aEvent) ||
|
|
aEvent->message == NS_PLUGIN_ACTIVATE ||
|
|
aEvent->message == NS_PLUGIN_FOCUS)) {
|
|
nsIView* targetView = aView;
|
|
while (targetView && !targetView->GetClientData()) {
|
|
targetView = targetView->GetParent();
|
|
}
|
|
|
|
if (targetView) {
|
|
aView = targetView;
|
|
frame = static_cast<nsIFrame*>(aView->GetClientData());
|
|
}
|
|
}
|
|
|
|
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 == FrameManager()->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;
|
|
}
|
|
}
|
|
|
|
PRBool captureRetarget = PR_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.
|
|
PRBool 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(nsGkAtoms::selectPopupList).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(nsnull);
|
|
capturingContent = nsnull;
|
|
}
|
|
}
|
|
|
|
PRBool 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
|
|
= nsLayoutUtils::GetEventCoordinatesRelativeTo(aEvent, frame);
|
|
{
|
|
PRBool ignoreRootScrollFrame = PR_FALSE;
|
|
if (aEvent->eventStructType == NS_MOUSE_EVENT) {
|
|
ignoreRootScrollFrame = static_cast<nsMouseEvent*>(aEvent)->ignoreRootScrollFrame;
|
|
}
|
|
nsIFrame* target = nsLayoutUtils::GetFrameForPoint(frame, eventPoint,
|
|
PR_FALSE, ignoreRootScrollFrame);
|
|
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;
|
|
aView = frame->GetClosestView();
|
|
}
|
|
}
|
|
|
|
// 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 = PR_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());
|
|
|
|
// 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);
|
|
nsIView* activeShellRootView = shell->GetViewManager()->GetRootView();
|
|
frame = static_cast<nsIFrame*>(activeShellRootView->GetClientData());
|
|
}
|
|
}
|
|
|
|
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);
|
|
nsIView* subshellRootView = shell->GetViewManager()->GetRootView();
|
|
// We pass the subshell's root view as the view 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(subshellRootView, frame,
|
|
aEvent, aEventStatus);
|
|
}
|
|
|
|
return HandlePositionedEvent(aView, frame, aEvent, aEventStatus);
|
|
}
|
|
|
|
nsresult rv = NS_OK;
|
|
|
|
if (frame) {
|
|
PushCurrentEventInfo(nsnull, nsnull);
|
|
|
|
// key and IME related events go to the focused frame in this DOM window.
|
|
if (NS_IsEventTargetedAtFocusedContent(aEvent)) {
|
|
mCurrentEventContent = nsnull;
|
|
|
|
nsCOMPtr<nsPIDOMWindow> window =
|
|
do_QueryInterface(mDocument->GetWindow());
|
|
nsCOMPtr<nsPIDOMWindow> focusedWindow;
|
|
nsCOMPtr<nsIContent> eventTarget =
|
|
nsFocusManager::GetFocusedDescendant(window, PR_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()) {
|
|
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 = nsnull;
|
|
nsIDocument* targetDoc = eventTarget ? eventTarget->GetOwnerDoc() : nsnull;
|
|
if (targetDoc && targetDoc != mDocument) {
|
|
PopCurrentEventInfo();
|
|
nsIPresShell* shell = targetDoc->GetShell();
|
|
nsCOMPtr<nsIViewObserver> vo = do_QueryInterface(shell);
|
|
if (vo) {
|
|
nsIView* root = shell->GetViewManager()->GetRootView();
|
|
rv = static_cast<PresShell*>(shell)->HandleRetargetedEvent(aEvent,
|
|
root,
|
|
aEventStatus,
|
|
eventTarget);
|
|
}
|
|
return rv;
|
|
} else {
|
|
mCurrentEventContent = eventTarget;
|
|
}
|
|
|
|
if (!mCurrentEventContent || !GetCurrentEventFrame() ||
|
|
InZombieDocument(mCurrentEventContent)) {
|
|
rv = RetargetEventToParent(aEvent, aEventStatus);
|
|
PopCurrentEventInfo();
|
|
return rv;
|
|
}
|
|
} else {
|
|
mCurrentEventFrame = frame;
|
|
}
|
|
if (GetCurrentEventFrame()) {
|
|
rv = HandleEventInternal(aEvent, aView, aEventStatus);
|
|
}
|
|
|
|
#ifdef NS_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 = nsnull;
|
|
return HandleEventInternal(aEvent, aView, 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 NS_DEBUG
|
|
void
|
|
PresShell::ShowEventTargetDebug()
|
|
{
|
|
if (nsFrame::GetShowEventTargetFrameBorder() &&
|
|
GetCurrentEventFrame()) {
|
|
if (mDrawEventTargetFrame) {
|
|
mDrawEventTargetFrame->Invalidate(
|
|
nsRect(nsPoint(0, 0), mDrawEventTargetFrame->GetSize()));
|
|
}
|
|
|
|
mDrawEventTargetFrame = mCurrentEventFrame;
|
|
mDrawEventTargetFrame->Invalidate(
|
|
nsRect(nsPoint(0, 0), mDrawEventTargetFrame->GetSize()));
|
|
}
|
|
}
|
|
#endif
|
|
|
|
nsresult
|
|
PresShell::HandlePositionedEvent(nsIView* aView,
|
|
nsIFrame* aTargetFrame,
|
|
nsGUIEvent* aEvent,
|
|
nsEventStatus* aEventStatus)
|
|
{
|
|
nsresult rv = NS_OK;
|
|
|
|
PushCurrentEventInfo(nsnull, nsnull);
|
|
|
|
mCurrentEventFrame = aTargetFrame;
|
|
|
|
if (mCurrentEventFrame) {
|
|
nsCOMPtr<nsIContent> targetElement;
|
|
mCurrentEventFrame->GetContentForEvent(mPresContext, 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 = nsnull;
|
|
mCurrentEventFrame = nsnull;
|
|
} else if (targetElement != mCurrentEventContent) {
|
|
mCurrentEventContent = targetElement;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (GetCurrentEventFrame()) {
|
|
rv = HandleEventInternal(aEvent, aView, aEventStatus);
|
|
}
|
|
|
|
#ifdef NS_DEBUG
|
|
ShowEventTargetDebug();
|
|
#endif
|
|
PopCurrentEventInfo();
|
|
return rv;
|
|
}
|
|
|
|
nsresult
|
|
PresShell::HandleEventWithTarget(nsEvent* aEvent, nsIFrame* aFrame,
|
|
nsIContent* aContent, nsEventStatus* aStatus)
|
|
{
|
|
PushCurrentEventInfo(aFrame, aContent);
|
|
nsresult rv = HandleEventInternal(aEvent, nsnull, aStatus);
|
|
PopCurrentEventInfo();
|
|
return rv;
|
|
}
|
|
|
|
static inline PRBool
|
|
IsSynthesizedMouseEvent(nsEvent* aEvent)
|
|
{
|
|
return aEvent->eventStructType == NS_MOUSE_EVENT &&
|
|
static_cast<nsMouseEvent*>(aEvent)->reason != nsMouseEvent::eReal;
|
|
}
|
|
|
|
static PRBool 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 PR_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 PR_FALSE;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
#endif
|
|
return PR_TRUE;
|
|
}
|
|
|
|
nsresult
|
|
PresShell::HandleEventInternal(nsEvent* aEvent, nsIView *aView,
|
|
nsEventStatus* aStatus)
|
|
{
|
|
NS_TIME_FUNCTION_MIN(1.0);
|
|
|
|
#ifdef ACCESSIBILITY
|
|
if (aEvent->eventStructType == NS_ACCESSIBLE_EVENT)
|
|
{
|
|
nsAccessibleEvent *accEvent = static_cast<nsAccessibleEvent*>(aEvent);
|
|
accEvent->mAccessible = nsnull;
|
|
|
|
nsCOMPtr<nsIAccessibilityService> accService =
|
|
do_GetService("@mozilla.org/accessibilityService;1");
|
|
if (accService) {
|
|
nsCOMPtr<nsISupports> container = mPresContext->GetContainer();
|
|
if (!container) {
|
|
// This presshell is not active. This often happens when a
|
|
// preshell is being held onto for fastback.
|
|
return NS_OK;
|
|
}
|
|
|
|
// Accessible creation might be not safe so we make sure it's not created
|
|
// at unsafe times.
|
|
accEvent->mAccessible =
|
|
accService->GetRootDocumentAccessible(this, nsContentUtils::IsSafeToRunScript());
|
|
|
|
// Ensure this is set in case a11y was activated before any
|
|
// nsPresShells existed to observe "a11y-init-or-shutdown" topic
|
|
gIsAccessibilityActive = PR_TRUE;
|
|
return NS_OK;
|
|
}
|
|
}
|
|
#endif
|
|
|
|
nsRefPtr<nsEventStateManager> manager = mPresContext->EventStateManager();
|
|
nsresult rv = NS_OK;
|
|
|
|
if (!NS_EVENT_NEEDS_FRAME(aEvent) || GetCurrentEventFrame()) {
|
|
PRBool isHandlingUserInput = PR_FALSE;
|
|
|
|
// XXX How about IME events and input events for plugins?
|
|
if (NS_IS_TRUSTED_EVENT(aEvent)) {
|
|
switch (aEvent->message) {
|
|
case NS_MOUSE_BUTTON_DOWN:
|
|
case NS_MOUSE_BUTTON_UP:
|
|
case NS_KEY_PRESS:
|
|
case NS_KEY_DOWN:
|
|
case NS_KEY_UP:
|
|
isHandlingUserInput = PR_TRUE;
|
|
break;
|
|
case NS_DRAGDROP_DROP:
|
|
nsCOMPtr<nsIDragSession> session = nsContentUtils::GetDragSession();
|
|
if (session) {
|
|
PRBool onlyChromeDrop = PR_FALSE;
|
|
session->GetOnlyChromeDrop(&onlyChromeDrop);
|
|
if (onlyChromeDrop) {
|
|
aEvent->flags |= NS_EVENT_FLAG_ONLY_CHROME_DISPATCH;
|
|
}
|
|
}
|
|
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->flags |= NS_EVENT_FLAG_ONLY_CHROME_DISPATCH |
|
|
NS_EVENT_RETARGET_TO_NON_NATIVE_ANONYMOUS;
|
|
}
|
|
|
|
nsAutoHandlingUserInputStatePusher userInpStatePusher(isHandlingUserInput,
|
|
aEvent, mDocument);
|
|
|
|
if (NS_IS_TRUSTED_EVENT(aEvent) && 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 = nsnull;
|
|
|
|
nsWeakView weakView(aView);
|
|
// 1. Give event to event manager for pre event state changes and
|
|
// generation of synthetic events.
|
|
rv = manager->PreHandleEvent(mPresContext, aEvent, mCurrentEventFrame,
|
|
aStatus, aView);
|
|
|
|
// 2. Give event to the DOM for third party and JS use.
|
|
if (GetCurrentEventFrame() && NS_SUCCEEDED(rv)) {
|
|
PRBool wasHandlingKeyBoardEvent =
|
|
nsContentUtils::IsHandlingKeyBoardEvent();
|
|
if (aEvent->eventStructType == NS_KEY_EVENT) {
|
|
nsContentUtils::SetIsHandlingKeyBoardEvent(PR_TRUE);
|
|
}
|
|
// We want synthesized mouse moves to cause mouseover and mouseout
|
|
// DOM events (PreHandleEvent above), but not mousemove DOM events.
|
|
// Synthesized button up events also do not cause DOM events
|
|
// because they do not have a reliable refPoint.
|
|
if (!IsSynthesizedMouseEvent(aEvent)) {
|
|
nsPresShellEventCB eventCB(this);
|
|
if (mCurrentEventContent) {
|
|
nsEventDispatcher::Dispatch(mCurrentEventContent, mPresContext,
|
|
aEvent, nsnull, aStatus, &eventCB);
|
|
}
|
|
else {
|
|
nsCOMPtr<nsIContent> targetContent;
|
|
rv = mCurrentEventFrame->GetContentForEvent(mPresContext, aEvent,
|
|
getter_AddRefs(targetContent));
|
|
if (NS_SUCCEEDED(rv) && targetContent) {
|
|
nsEventDispatcher::Dispatch(targetContent, mPresContext, aEvent,
|
|
nsnull, aStatus, &eventCB);
|
|
} else if (mDocument) {
|
|
nsEventDispatcher::Dispatch(mDocument, mPresContext, aEvent,
|
|
nsnull, aStatus, nsnull);
|
|
}
|
|
}
|
|
}
|
|
|
|
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,
|
|
weakView.GetView());
|
|
}
|
|
}
|
|
|
|
if (aEvent->message == NS_MOUSE_BUTTON_UP) {
|
|
// reset the capturing content now that the mouse button is up
|
|
SetCapturingContent(nsnull, 0);
|
|
} else if (aEvent->message == NS_MOUSE_MOVE) {
|
|
nsIPresShell::AllowMouseCapture(PR_FALSE);
|
|
}
|
|
}
|
|
return rv;
|
|
}
|
|
|
|
// 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(nsnull, 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, nsnull,
|
|
aStatus);
|
|
}
|
|
|
|
PopCurrentEventInfo();
|
|
return rv;
|
|
}
|
|
|
|
// See the method above.
|
|
nsresult
|
|
PresShell::HandleDOMEventWithTarget(nsIContent* aTargetContent,
|
|
nsIDOMEvent* aEvent,
|
|
nsEventStatus* aStatus)
|
|
{
|
|
nsresult rv = NS_OK;
|
|
|
|
PushCurrentEventInfo(nsnull, aTargetContent);
|
|
nsCOMPtr<nsISupports> container = mPresContext->GetContainer();
|
|
if (container) {
|
|
rv = nsEventDispatcher::DispatchDOMEvent(aTargetContent, nsnull, aEvent,
|
|
mPresContext, aStatus);
|
|
}
|
|
|
|
PopCurrentEventInfo();
|
|
return rv;
|
|
}
|
|
|
|
PRBool
|
|
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 PR_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 = FrameManager()->GetRootFrame();
|
|
if (rootFrame) {
|
|
nsIView* view = rootFrame->GetClosestView(&offset);
|
|
offset += view->GetOffsetToWidget(aEvent->widget);
|
|
aEvent->refPoint =
|
|
offset.ToNearestPixels(mPresContext->AppUnitsPerDevPixel());
|
|
}
|
|
}
|
|
} else {
|
|
aEvent->widget = nsnull;
|
|
}
|
|
|
|
// 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 PR_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 = nsnull;
|
|
GetCurrentEventFrame();
|
|
}
|
|
}
|
|
|
|
return PR_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.
|
|
PRBool
|
|
PresShell::PrepareToUseCaretPosition(nsIWidget* aEventWidget, nsIntPoint& aTargetPt)
|
|
{
|
|
nsresult rv;
|
|
|
|
// check caret visibility
|
|
nsRefPtr<nsCaret> caret = GetCaret();
|
|
NS_ENSURE_TRUE(caret, PR_FALSE);
|
|
|
|
PRBool caretVisible = PR_FALSE;
|
|
rv = caret->GetCaretVisible(&caretVisible);
|
|
if (NS_FAILED(rv) || ! caretVisible)
|
|
return PR_FALSE;
|
|
|
|
// caret selection, this is a temporary weak reference, so no refcounting is
|
|
// needed
|
|
nsISelection* domSelection = caret->GetCaretDOMSelection();
|
|
NS_ENSURE_TRUE(domSelection, PR_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 = nsnull; // may be NULL
|
|
nsCOMPtr<nsIDOMNode> node;
|
|
rv = domSelection->GetFocusNode(getter_AddRefs(node));
|
|
NS_ENSURE_SUCCESS(rv, PR_FALSE);
|
|
NS_ENSURE_TRUE(node, PR_FALSE);
|
|
nsCOMPtr<nsIContent> content(do_QueryInterface(node));
|
|
if (content) {
|
|
nsIContent* nonNative = content->FindFirstNonNativeAnonymous();
|
|
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, NS_PRESSHELL_SCROLL_IF_NOT_VISIBLE,
|
|
NS_PRESSHELL_SCROLL_IF_NOT_VISIBLE,
|
|
SCROLL_OVERFLOW_HIDDEN);
|
|
NS_ENSURE_SUCCESS(rv, PR_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, PR_FALSE);
|
|
}
|
|
|
|
nsPresContext* presContext = GetPresContext();
|
|
|
|
// get caret position relative to the closest view
|
|
nsRect caretCoords;
|
|
nsIFrame* caretFrame = caret->GetGeometry(domSelection, &caretCoords);
|
|
if (!caretFrame)
|
|
return PR_FALSE;
|
|
nsPoint viewOffset;
|
|
nsIView* view = caretFrame->GetClosestView(&viewOffset);
|
|
if (!view)
|
|
return PR_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 PR_TRUE;
|
|
}
|
|
|
|
void
|
|
PresShell::GetCurrentItemAndPositionForElement(nsIDOMElement *aCurrentEl,
|
|
nsIContent** aTargetToUse,
|
|
nsIntPoint& aTargetPt,
|
|
nsIWidget *aRootWidget)
|
|
{
|
|
nsCOMPtr<nsIContent> focusedContent(do_QueryInterface(aCurrentEl));
|
|
ScrollContentIntoView(focusedContent, NS_PRESSHELL_SCROLL_ANYWHERE,
|
|
NS_PRESSHELL_SCROLL_ANYWHERE,
|
|
SCROLL_OVERFLOW_HIDDEN);
|
|
|
|
nsPresContext* presContext = GetPresContext();
|
|
|
|
PRBool istree = PR_FALSE, checkLineHeight = PR_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 = PR_FALSE;
|
|
|
|
PRInt32 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);
|
|
PRInt32 firstVisibleRow, rowHeight;
|
|
treeBox->GetFirstVisibleRow(&firstVisibleRow);
|
|
treeBox->GetRowHeight(&rowHeight);
|
|
|
|
extraTreeY += presContext->CSSPixelsToAppUnits(
|
|
(currentIndex - firstVisibleRow + 1) * rowHeight);
|
|
istree = PR_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 = PR_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
|
|
nsIView *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);
|
|
PRInt32 APD = presContext->AppUnitsPerDevPixel();
|
|
PRInt32 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);
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
PresShell::ResizeReflow(nsIView *aView, nscoord aWidth, nscoord aHeight)
|
|
{
|
|
return ResizeReflow(aWidth, aHeight);
|
|
}
|
|
|
|
NS_IMETHODIMP_(PRBool)
|
|
PresShell::ShouldIgnoreInvalidation()
|
|
{
|
|
return mPaintingSuppressed || !mIsActive;
|
|
}
|
|
|
|
NS_IMETHODIMP_(void)
|
|
PresShell::WillPaint(PRBool aWillSendDidPaint)
|
|
{
|
|
// 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) {
|
|
return;
|
|
}
|
|
|
|
if (!aWillSendDidPaint) {
|
|
nsRootPresContext* rootPresContext = mPresContext->GetRootPresContext();
|
|
if (!rootPresContext) {
|
|
return;
|
|
}
|
|
if (rootPresContext == mPresContext) {
|
|
rootPresContext->UpdatePluginGeometry();
|
|
}
|
|
}
|
|
|
|
// 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(Flush_InterruptibleLayout);
|
|
}
|
|
|
|
NS_IMETHODIMP_(void)
|
|
PresShell::DidPaint()
|
|
{
|
|
if (mPaintingSuppressed || !mIsActive) {
|
|
return;
|
|
}
|
|
|
|
nsRootPresContext* rootPresContext = mPresContext->GetRootPresContext();
|
|
if (!rootPresContext) {
|
|
return;
|
|
}
|
|
if (rootPresContext == mPresContext) {
|
|
rootPresContext->UpdatePluginGeometry();
|
|
}
|
|
}
|
|
|
|
nsresult
|
|
PresShell::GetAgentStyleSheets(nsCOMArray<nsIStyleSheet>& aSheets)
|
|
{
|
|
aSheets.Clear();
|
|
PRInt32 sheetCount = mStyleSet->SheetCount(nsStyleSet::eAgentSheet);
|
|
|
|
for (PRInt32 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 */)
|
|
{
|
|
nsIFrame *frame = aContent->GetPrimaryFrame();
|
|
nsIObjectFrame *objectFrame = do_QueryFrame(frame);
|
|
if (objectFrame) {
|
|
objectFrame->StopPlugin();
|
|
}
|
|
}
|
|
|
|
static PRBool
|
|
FreezeSubDocument(nsIDocument *aDocument, void *aData)
|
|
{
|
|
nsIPresShell *shell = aDocument->GetShell();
|
|
if (shell)
|
|
shell->Freeze();
|
|
|
|
return PR_TRUE;
|
|
}
|
|
|
|
void
|
|
PresShell::Freeze()
|
|
{
|
|
MaybeReleaseCapturingContent();
|
|
|
|
mDocument->EnumerateFreezableElements(FreezeElement, nsnull);
|
|
|
|
if (mCaret) {
|
|
mCaret->SetCaretVisible(PR_FALSE);
|
|
}
|
|
|
|
mPaintingSuppressed = PR_TRUE;
|
|
|
|
if (mDocument) {
|
|
mDocument->EnumerateSubDocuments(FreezeSubDocument, nsnull);
|
|
}
|
|
|
|
nsPresContext* presContext = GetPresContext();
|
|
if (presContext &&
|
|
presContext->RefreshDriver()->PresContext() == presContext) {
|
|
presContext->RefreshDriver()->Freeze();
|
|
}
|
|
|
|
if (presContext) {
|
|
nsRootPresContext* rootPresContext = presContext->GetRootPresContext();
|
|
if (rootPresContext) {
|
|
rootPresContext->
|
|
RootForgetUpdatePluginGeometryFrameForPresContext(mPresContext);
|
|
}
|
|
}
|
|
|
|
mFrozen = PR_TRUE;
|
|
if (mDocument) {
|
|
UpdateImageLockingState();
|
|
}
|
|
}
|
|
|
|
void
|
|
PresShell::FireOrClearDelayedEvents(PRBool aFireEvents)
|
|
{
|
|
mNoDelayedMouseEvents = PR_FALSE;
|
|
mNoDelayedKeyEvents = PR_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> objlc(do_QueryInterface(aContent));
|
|
if (objlc) {
|
|
nsRefPtr<nsNPAPIPluginInstance> inst;
|
|
objlc->EnsureInstantiation(getter_AddRefs(inst));
|
|
}
|
|
}
|
|
|
|
static PRBool
|
|
ThawSubDocument(nsIDocument *aDocument, void *aData)
|
|
{
|
|
nsIPresShell *shell = aDocument->GetShell();
|
|
if (shell)
|
|
shell->Thaw();
|
|
|
|
return PR_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, nsnull);
|
|
|
|
// Get the activeness of our presshell, as this might have changed
|
|
// while we were in the bfcache
|
|
QueryIsActive();
|
|
|
|
// We're now unfrozen
|
|
mFrozen = PR_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 = PR_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();
|
|
}
|
|
|
|
void
|
|
PresShell::DidDoReflow(PRBool aInterruptible)
|
|
{
|
|
mFrameConstructor->EndUpdate();
|
|
|
|
HandlePostedReflowCallbacks(aInterruptible);
|
|
if (sSynthMouseMove) {
|
|
SynthesizeMouseMove(PR_FALSE);
|
|
}
|
|
if (mCaret) {
|
|
// Update the caret's position now to account for any changes created by
|
|
// the reflow.
|
|
mCaret->InvalidateOutsideCaret();
|
|
mCaret->UpdateCaretPosition();
|
|
}
|
|
}
|
|
|
|
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 = nsnull;
|
|
self->ScheduleReflow();
|
|
}
|
|
|
|
PRBool
|
|
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 PR_FALSE;
|
|
}
|
|
}
|
|
return PR_TRUE;
|
|
}
|
|
|
|
PRBool
|
|
PresShell::DoReflow(nsIFrame* target, PRBool aInterruptible)
|
|
{
|
|
NS_TIME_FUNCTION_WITH_DOCURL;
|
|
|
|
if (mReflowContinueTimer) {
|
|
mReflowContinueTimer->Cancel();
|
|
mReflowContinueTimer = nsnull;
|
|
}
|
|
|
|
nsIFrame* rootFrame = FrameManager()->GetRootFrame();
|
|
|
|
nsRefPtr<nsRenderingContext> rcx = GetReferenceRenderingContext();
|
|
if (!rcx) {
|
|
NS_NOTREACHED("CreateRenderingContext failure");
|
|
return PR_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();
|
|
|
|
// target->GetRect() has the old size of the frame,
|
|
// mPresContext->GetVisibleArea() has the new size.
|
|
target->InvalidateRectDifference(mPresContext->GetVisibleArea(),
|
|
target->GetRect());
|
|
} 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
|
|
// DocumentViewerImpl::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.
|
|
PRBool hasUnconstrainedHeight = size.height == NS_UNCONSTRAINEDSIZE;
|
|
|
|
if (hasUnconstrainedHeight || mLastRootReflowHadUnconstrainedHeight) {
|
|
reflowState.mFlags.mVResize = PR_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 = NS_MAX(computedHeight, 0);
|
|
reflowState.SetComputedHeight(computedHeight);
|
|
}
|
|
NS_ASSERTION(reflowState.ComputedWidth() ==
|
|
size.width -
|
|
reflowState.mComputedBorderPadding.LeftRight(),
|
|
"reflow state computed incorrect width");
|
|
|
|
mPresContext->ReflowStarted(aInterruptible);
|
|
mIsReflowing = PR_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.
|
|
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(desiredSize.VisualOverflow().IsEqualInterior(
|
|
nsRect(nsPoint(0, 0),
|
|
nsSize(desiredSize.width, desiredSize.height))),
|
|
"reflow roots must not have visible overflow");
|
|
NS_ASSERTION(desiredSize.ScrollableOverflow().IsEqualEdges(
|
|
nsRect(nsPoint(0, 0),
|
|
nsSize(desiredSize.width, desiredSize.height))),
|
|
"reflow roots must not have scrollable overflow");
|
|
NS_ASSERTION(status == NS_FRAME_COMPLETE,
|
|
"reflow roots should never split");
|
|
|
|
target->SetSize(nsSize(desiredSize.width, desiredSize.height));
|
|
|
|
nsContainerFrame::SyncFrameViewAfterReflow(mPresContext, target,
|
|
target->GetView(),
|
|
desiredSize.VisualOverflow());
|
|
nsContainerFrame::SyncWindowProperties(mPresContext, target,
|
|
target->GetView());
|
|
|
|
target->DidReflow(mPresContext, nsnull, NS_FRAME_REFLOW_FINISHED);
|
|
if (target == rootFrame && size.height == NS_UNCONSTRAINEDSIZE) {
|
|
mPresContext->SetVisibleArea(nsRect(0, 0, desiredSize.width,
|
|
desiredSize.height));
|
|
}
|
|
|
|
#ifdef DEBUG
|
|
mCurrentReflowRoot = nsnull;
|
|
#endif
|
|
|
|
NS_ASSERTION(mPresContext->HasPendingInterrupt() ||
|
|
mFramesToDirty.Count() == 0,
|
|
"Why do we need to dirty anything if not interrupted?");
|
|
|
|
mIsReflowing = PR_FALSE;
|
|
PRBool 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);
|
|
|
|
// 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 = PR_TRUE;
|
|
MaybeScheduleReflow();
|
|
}
|
|
|
|
nsRootPresContext* rootPC = mPresContext->GetRootPresContext();
|
|
if (rootPC) {
|
|
rootPC->RequestUpdatePluginGeometry(target);
|
|
}
|
|
|
|
return !interrupted;
|
|
}
|
|
|
|
#ifdef DEBUG
|
|
void
|
|
PresShell::DoVerifyReflow()
|
|
{
|
|
if (GetVerifyReflowEnable()) {
|
|
// First synchronously render what we have so far so that we can
|
|
// see it.
|
|
nsIView* rootView = mViewManager->GetRootView();
|
|
mViewManager->UpdateView(rootView, NS_VMREFRESH_IMMEDIATE);
|
|
|
|
FlushPendingNotifications(Flush_Layout);
|
|
mInVerifyReflow = PR_TRUE;
|
|
PRBool ok = VerifyIncrementalReflow();
|
|
mInVerifyReflow = PR_FALSE;
|
|
if (VERIFY_REFLOW_ALL & gVerifyReflowFlags) {
|
|
printf("ProcessReflowCommands: finished (%s)\n",
|
|
ok ? "ok" : "failed");
|
|
}
|
|
|
|
if (0 != mDirtyRoots.Length()) {
|
|
printf("XXX yikes! reflow commands queued during verify-reflow\n");
|
|
}
|
|
}
|
|
}
|
|
#endif
|
|
|
|
PRBool
|
|
PresShell::ProcessReflowCommands(PRBool aInterruptible)
|
|
{
|
|
NS_TIME_FUNCTION_WITH_DOCURL;
|
|
|
|
PRBool interrupted = PR_FALSE;
|
|
if (0 != mDirtyRoots.Length()) {
|
|
|
|
#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);
|
|
|
|
do {
|
|
// Send an incremental reflow notification to the target frame.
|
|
PRInt32 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.Length() &&
|
|
(!aInterruptible || PR_IntervalNow() < deadline));
|
|
|
|
interrupted = mDirtyRoots.Length() != 0;
|
|
}
|
|
|
|
// Exiting the scriptblocker might have killed us
|
|
if (!mIsDestroying) {
|
|
DidDoReflow(aInterruptible);
|
|
}
|
|
|
|
// 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.Length())
|
|
MaybeScheduleReflow();
|
|
}
|
|
}
|
|
|
|
if (!mIsDestroying && mShouldUnsuppressPainting &&
|
|
mDirtyRoots.Length() == 0) {
|
|
// 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 = PR_FALSE;
|
|
UnsuppressAndInvalidate();
|
|
}
|
|
|
|
return !interrupted;
|
|
}
|
|
|
|
#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 PRBool (* frameWalkerFn)(nsIFrame *aFrame, void *aClosure);
|
|
|
|
static PRBool
|
|
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.
|
|
if (aFrame && aFrame->GetType() == nsGkAtoms::menuFrame)
|
|
(static_cast<nsMenuFrame *>(aFrame))->CloseMenu(PR_TRUE);
|
|
return PR_TRUE;
|
|
}
|
|
|
|
static PRBool
|
|
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 PR_FALSE; // don't walk descendants
|
|
}
|
|
return PR_TRUE; // walk descendants
|
|
}
|
|
|
|
static void
|
|
WalkFramesThroughPlaceholders(nsPresContext *aPresContext, nsIFrame *aFrame,
|
|
frameWalkerFn aFunc, void *aClosure)
|
|
{
|
|
PRBool walkChildren = (*aFunc)(aFrame, aClosure);
|
|
if (!walkChildren)
|
|
return;
|
|
|
|
PRInt32 listIndex = 0;
|
|
nsIAtom* childList = nsnull;
|
|
|
|
do {
|
|
nsIFrame *child = aFrame->GetFirstChild(childList);
|
|
while (child) {
|
|
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);
|
|
}
|
|
child = child->GetNextSibling();
|
|
}
|
|
|
|
childList = aFrame->GetAdditionalChildListName(listIndex++);
|
|
} while (childList);
|
|
}
|
|
#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 = FrameManager()->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");
|
|
nsIViewManager::UpdateViewBatch batch(mViewManager);
|
|
|
|
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, nsnull);
|
|
|
|
// 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;
|
|
mFrameConstructor->ProcessRestyledFrames(changeList);
|
|
--mChangeNestCount;
|
|
}
|
|
}
|
|
batch.EndUpdateViewBatch(NS_VMREFRESH_NO_SYNC);
|
|
}
|
|
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, "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;
|
|
}
|
|
|
|
#ifdef ACCESSIBILITY
|
|
if (!nsCRT::strcmp(aTopic, "a11y-init-or-shutdown")) {
|
|
gIsAccessibilityActive = aData && *aData == '1';
|
|
return NS_OK;
|
|
}
|
|
#endif
|
|
NS_WARNING("unrecognized topic in PresShell::Observe");
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
PRBool
|
|
nsIPresShell::AddRefreshObserverInternal(nsARefreshObserver* aObserver,
|
|
mozFlushType aFlushType)
|
|
{
|
|
nsPresContext* presContext = GetPresContext();
|
|
return presContext ? presContext->RefreshDriver()->
|
|
AddRefreshObserver(aObserver, aFlushType) : PR_FALSE;
|
|
}
|
|
|
|
/* virtual */ PRBool
|
|
nsIPresShell::AddRefreshObserverExternal(nsARefreshObserver* aObserver,
|
|
mozFlushType aFlushType)
|
|
{
|
|
return AddRefreshObserverInternal(aObserver, aFlushType);
|
|
}
|
|
|
|
PRBool
|
|
nsIPresShell::RemoveRefreshObserverInternal(nsARefreshObserver* aObserver,
|
|
mozFlushType aFlushType)
|
|
{
|
|
nsPresContext* presContext = GetPresContext();
|
|
return presContext ? presContext->RefreshDriver()->
|
|
RemoveRefreshObserver(aObserver, aFlushType) : PR_FALSE;
|
|
}
|
|
|
|
/* virtual */ PRBool
|
|
nsIPresShell::RemoveRefreshObserverExternal(nsARefreshObserver* aObserver,
|
|
mozFlushType aFlushType)
|
|
{
|
|
return RemoveRefreshObserverInternal(aObserver, aFlushType);
|
|
}
|
|
|
|
//------------------------------------------------------
|
|
// End of protected and private methods on the PresShell
|
|
//------------------------------------------------------
|
|
|
|
// Start of DEBUG only code
|
|
|
|
#ifdef NS_DEBUG
|
|
#include "nsViewsCID.h"
|
|
#include "nsWidgetsCID.h"
|
|
#include "nsIURL.h"
|
|
#include "nsILinkHandler.h"
|
|
|
|
static NS_DEFINE_CID(kViewManagerCID, NS_VIEW_MANAGER_CID);
|
|
|
|
static void
|
|
LogVerifyMessage(nsIFrame* k1, nsIFrame* k2, const char* aMsg)
|
|
{
|
|
nsAutoString n1, n2;
|
|
if (k1) {
|
|
k1->GetFrameName(n1);
|
|
} else {
|
|
n1.Assign(NS_LITERAL_STRING("(null)"));
|
|
}
|
|
|
|
if (k2) {
|
|
k2->GetFrameName(n2);
|
|
} else {
|
|
n2.Assign(NS_LITERAL_STRING("(null)"));
|
|
}
|
|
|
|
printf("verifyreflow: %s %p != %s %p %s\n",
|
|
NS_LossyConvertUTF16toASCII(n1).get(), (void*)k1,
|
|
NS_LossyConvertUTF16toASCII(n2).get(), (void*)k2, aMsg);
|
|
}
|
|
|
|
static void
|
|
LogVerifyMessage(nsIFrame* k1, nsIFrame* k2, const char* aMsg,
|
|
const nsRect& r1, const nsRect& r2)
|
|
{
|
|
printf("VerifyReflow Error:\n");
|
|
nsAutoString name;
|
|
|
|
if (k1) {
|
|
k1->GetFrameName(name);
|
|
printf(" %s %p ", NS_LossyConvertUTF16toASCII(name).get(), (void*)k1);
|
|
}
|
|
printf("{%d, %d, %d, %d} != \n", r1.x, r1.y, r1.width, r1.height);
|
|
|
|
if (k2) {
|
|
k2->GetFrameName(name);
|
|
printf(" %s %p ", NS_LossyConvertUTF16toASCII(name).get(), (void*)k2);
|
|
}
|
|
printf("{%d, %d, %d, %d}\n %s\n",
|
|
r2.x, r2.y, r2.width, r2.height, aMsg);
|
|
}
|
|
|
|
static void
|
|
LogVerifyMessage(nsIFrame* k1, nsIFrame* k2, const char* aMsg,
|
|
const nsIntRect& r1, const nsIntRect& r2)
|
|
{
|
|
printf("VerifyReflow Error:\n");
|
|
nsAutoString name;
|
|
|
|
if (k1) {
|
|
k1->GetFrameName(name);
|
|
printf(" %s %p ", NS_LossyConvertUTF16toASCII(name).get(), (void*)k1);
|
|
}
|
|
printf("{%d, %d, %d, %d} != \n", r1.x, r1.y, r1.width, r1.height);
|
|
|
|
if (k2) {
|
|
k2->GetFrameName(name);
|
|
printf(" %s %p ", NS_LossyConvertUTF16toASCII(name).get(), (void*)k2);
|
|
}
|
|
printf("{%d, %d, %d, %d}\n %s\n",
|
|
r2.x, r2.y, r2.width, r2.height, aMsg);
|
|
}
|
|
|
|
static PRBool
|
|
CompareTrees(nsPresContext* aFirstPresContext, nsIFrame* aFirstFrame,
|
|
nsPresContext* aSecondPresContext, nsIFrame* aSecondFrame)
|
|
{
|
|
if (!aFirstPresContext || !aFirstFrame || !aSecondPresContext || !aSecondFrame)
|
|
return PR_TRUE;
|
|
// XXX Evil hack to reduce false positives; I can't seem to figure
|
|
// out how to flush scrollbar changes correctly
|
|
//if (aFirstFrame->GetType() == nsGkAtoms::scrollbarFrame)
|
|
// return PR_TRUE;
|
|
PRBool ok = PR_TRUE;
|
|
nsIAtom* listName = nsnull;
|
|
PRInt32 listIndex = 0;
|
|
do {
|
|
const nsFrameList& kids1 = aFirstFrame->GetChildList(listName);
|
|
const nsFrameList& kids2 = aSecondFrame->GetChildList(listName);
|
|
PRInt32 l1 = kids1.GetLength();
|
|
PRInt32 l2 = kids2.GetLength();;
|
|
if (l1 != l2) {
|
|
ok = PR_FALSE;
|
|
LogVerifyMessage(kids1.FirstChild(), kids2.FirstChild(),
|
|
"child counts don't match: ");
|
|
printf("%d != %d\n", l1, l2);
|
|
if (0 == (VERIFY_REFLOW_ALL & gVerifyReflowFlags)) {
|
|
break;
|
|
}
|
|
}
|
|
|
|
nsIntRect r1, r2;
|
|
nsIView* v1, *v2;
|
|
for (nsFrameList::Enumerator e1(kids1), e2(kids2);
|
|
;
|
|
e1.Next(), e2.Next()) {
|
|
nsIFrame* k1 = e1.get();
|
|
nsIFrame* k2 = e2.get();
|
|
if (((nsnull == k1) && (nsnull != k2)) ||
|
|
((nsnull != k1) && (nsnull == k2))) {
|
|
ok = PR_FALSE;
|
|
LogVerifyMessage(k1, k2, "child lists are different\n");
|
|
break;
|
|
}
|
|
else if (nsnull != k1) {
|
|
// Verify that the frames are the same size
|
|
if (!k1->GetRect().IsEqualInterior(k2->GetRect())) {
|
|
ok = PR_FALSE;
|
|
LogVerifyMessage(k1, k2, "(frame rects)", k1->GetRect(), k2->GetRect());
|
|
}
|
|
|
|
// Make sure either both have views or neither have views; if they
|
|
// do have views, make sure the views are the same size. If the
|
|
// views have widgets, make sure they both do or neither does. If
|
|
// they do, make sure the widgets are the same size.
|
|
v1 = k1->GetView();
|
|
v2 = k2->GetView();
|
|
if (((nsnull == v1) && (nsnull != v2)) ||
|
|
((nsnull != v1) && (nsnull == v2))) {
|
|
ok = PR_FALSE;
|
|
LogVerifyMessage(k1, k2, "child views are not matched\n");
|
|
}
|
|
else if (nsnull != v1) {
|
|
if (!v1->GetBounds().IsEqualInterior(v2->GetBounds())) {
|
|
LogVerifyMessage(k1, k2, "(view rects)", v1->GetBounds(), v2->GetBounds());
|
|
}
|
|
|
|
nsIWidget* w1 = v1->GetWidget();
|
|
nsIWidget* w2 = v2->GetWidget();
|
|
if (((nsnull == w1) && (nsnull != w2)) ||
|
|
((nsnull != w1) && (nsnull == w2))) {
|
|
ok = PR_FALSE;
|
|
LogVerifyMessage(k1, k2, "child widgets are not matched\n");
|
|
}
|
|
else if (nsnull != w1) {
|
|
w1->GetBounds(r1);
|
|
w2->GetBounds(r2);
|
|
if (!r1.IsEqualEdges(r2)) {
|
|
LogVerifyMessage(k1, k2, "(widget rects)", r1, r2);
|
|
}
|
|
}
|
|
}
|
|
if (!ok && (0 == (VERIFY_REFLOW_ALL & gVerifyReflowFlags))) {
|
|
break;
|
|
}
|
|
|
|
// XXX Should perhaps compare their float managers.
|
|
|
|
// Compare the sub-trees too
|
|
if (!CompareTrees(aFirstPresContext, k1, aSecondPresContext, k2)) {
|
|
ok = PR_FALSE;
|
|
if (0 == (VERIFY_REFLOW_ALL & gVerifyReflowFlags)) {
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
else {
|
|
break;
|
|
}
|
|
}
|
|
if (!ok && (0 == (VERIFY_REFLOW_ALL & gVerifyReflowFlags))) {
|
|
break;
|
|
}
|
|
|
|
nsIAtom* listName1 = aFirstFrame->GetAdditionalChildListName(listIndex);
|
|
nsIAtom* listName2 = aSecondFrame->GetAdditionalChildListName(listIndex);
|
|
listIndex++;
|
|
if (listName1 != listName2) {
|
|
if (0 == (VERIFY_REFLOW_ALL & gVerifyReflowFlags)) {
|
|
ok = PR_FALSE;
|
|
}
|
|
LogVerifyMessage(kids1.FirstChild(), kids2.FirstChild(),
|
|
"child list names are not matched: ");
|
|
nsAutoString tmp;
|
|
if (nsnull != listName1) {
|
|
listName1->ToString(tmp);
|
|
fputs(NS_LossyConvertUTF16toASCII(tmp).get(), stdout);
|
|
}
|
|
else
|
|
fputs("(null)", stdout);
|
|
printf(" != ");
|
|
if (nsnull != listName2) {
|
|
listName2->ToString(tmp);
|
|
fputs(NS_LossyConvertUTF16toASCII(tmp).get(), stdout);
|
|
}
|
|
else
|
|
fputs("(null)", stdout);
|
|
printf("\n");
|
|
break;
|
|
}
|
|
listName = listName1;
|
|
} while (ok && (listName != nsnull));
|
|
|
|
return ok;
|
|
}
|
|
#endif
|
|
|
|
#if 0
|
|
static nsIFrame*
|
|
FindTopFrame(nsIFrame* aRoot)
|
|
{
|
|
if (aRoot) {
|
|
nsIContent* content = aRoot->GetContent();
|
|
if (content) {
|
|
nsIAtom* tag;
|
|
content->GetTag(tag);
|
|
if (nsnull != tag) {
|
|
NS_RELEASE(tag);
|
|
return aRoot;
|
|
}
|
|
}
|
|
|
|
// Try one of the children
|
|
nsIFrame* kid = aRoot->GetFirstChild(nsnull);
|
|
while (nsnull != kid) {
|
|
nsIFrame* result = FindTopFrame(kid);
|
|
if (nsnull != result) {
|
|
return result;
|
|
}
|
|
kid = kid->GetNextSibling();
|
|
}
|
|
}
|
|
return nsnull;
|
|
}
|
|
#endif
|
|
|
|
|
|
#ifdef DEBUG
|
|
|
|
nsresult
|
|
PresShell::CloneStyleSet(nsStyleSet* aSet, nsStyleSet** aResult)
|
|
{
|
|
nsStyleSet *clone = new nsStyleSet();
|
|
if (!clone) {
|
|
return NS_ERROR_OUT_OF_MEMORY;
|
|
}
|
|
|
|
PRInt32 i, n = aSet->SheetCount(nsStyleSet::eOverrideSheet);
|
|
for (i = 0; i < n; i++) {
|
|
nsIStyleSheet* ss = aSet->StyleSheetAt(nsStyleSet::eOverrideSheet, i);
|
|
if (ss)
|
|
clone->AppendStyleSheet(nsStyleSet::eOverrideSheet, ss);
|
|
}
|
|
|
|
// The document expects to insert document stylesheets itself
|
|
#if 0
|
|
n = aSet->SheetCount(nsStyleSet::eDocSheet);
|
|
for (i = 0; i < n; i++) {
|
|
nsIStyleSheet* ss = aSet->StyleSheetAt(nsStyleSet::eDocSheet, i);
|
|
if (ss)
|
|
clone->AddDocStyleSheet(ss, mDocument);
|
|
}
|
|
#endif
|
|
|
|
n = aSet->SheetCount(nsStyleSet::eUserSheet);
|
|
for (i = 0; i < n; i++) {
|
|
nsIStyleSheet* ss = aSet->StyleSheetAt(nsStyleSet::eUserSheet, i);
|
|
if (ss)
|
|
clone->AppendStyleSheet(nsStyleSet::eUserSheet, ss);
|
|
}
|
|
|
|
n = aSet->SheetCount(nsStyleSet::eAgentSheet);
|
|
for (i = 0; i < n; i++) {
|
|
nsIStyleSheet* ss = aSet->StyleSheetAt(nsStyleSet::eAgentSheet, i);
|
|
if (ss)
|
|
clone->AppendStyleSheet(nsStyleSet::eAgentSheet, ss);
|
|
}
|
|
*aResult = clone;
|
|
return NS_OK;
|
|
}
|
|
|
|
#ifdef DEBUG_Eli
|
|
static nsresult
|
|
DumpToPNG(nsIPresShell* shell, nsAString& name) {
|
|
PRInt32 width=1000, height=1000;
|
|
nsRect r(0, 0, shell->GetPresContext()->DevPixelsToAppUnits(width),
|
|
shell->GetPresContext()->DevPixelsToAppUnits(height));
|
|
|
|
nsRefPtr<gfxImageSurface> imgSurface =
|
|
new gfxImageSurface(gfxIntSize(width, height),
|
|
gfxImageSurface::ImageFormatARGB32);
|
|
NS_ENSURE_TRUE(imgSurface, NS_ERROR_OUT_OF_MEMORY);
|
|
|
|
nsRefPtr<gfxContext> imgContext = new gfxContext(imgSurface);
|
|
|
|
nsRefPtr<gfxASurface> surface =
|
|
gfxPlatform::GetPlatform()->
|
|
CreateOffscreenSurface(gfxIntSize(width, height),
|
|
gfxASurface::ContentFromFormat(gfxASurface::ImageFormatARGB32));
|
|
NS_ENSURE_TRUE(surface, NS_ERROR_OUT_OF_MEMORY);
|
|
|
|
nsRefPtr<gfxContext> context = new gfxContext(surface);
|
|
NS_ENSURE_TRUE(context, NS_ERROR_OUT_OF_MEMORY);
|
|
|
|
shell->RenderDocument(r, 0, NS_RGB(255, 255, 0), context);
|
|
|
|
imgContext->DrawSurface(surface, gfxSize(width, height));
|
|
|
|
nsCOMPtr<imgIEncoder> encoder = do_CreateInstance("@mozilla.org/image/encoder;2?type=image/png");
|
|
NS_ENSURE_TRUE(encoder, NS_ERROR_FAILURE);
|
|
encoder->InitFromData(imgSurface->Data(), imgSurface->Stride() * height,
|
|
width, height, imgSurface->Stride(),
|
|
imgIEncoder::INPUT_FORMAT_HOSTARGB, EmptyString());
|
|
|
|
// XXX not sure if this is the right way to write to a file
|
|
nsCOMPtr<nsILocalFile> file = do_CreateInstance("@mozilla.org/file/local;1");
|
|
NS_ENSURE_TRUE(file, NS_ERROR_FAILURE);
|
|
rv = file->InitWithPath(name);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
PRUint32 length;
|
|
encoder->Available(&length);
|
|
|
|
nsCOMPtr<nsIOutputStream> outputStream;
|
|
rv = NS_NewLocalFileOutputStream(getter_AddRefs(outputStream), file);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
nsCOMPtr<nsIOutputStream> bufferedOutputStream;
|
|
rv = NS_NewBufferedOutputStream(getter_AddRefs(bufferedOutputStream),
|
|
outputStream, length);
|
|
|
|
PRUint32 numWritten;
|
|
rv = bufferedOutputStream->WriteFrom(encoder, length, &numWritten);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
return NS_OK;
|
|
}
|
|
#endif
|
|
|
|
// After an incremental reflow, we verify the correctness by doing a
|
|
// full reflow into a fresh frame tree.
|
|
PRBool
|
|
PresShell::VerifyIncrementalReflow()
|
|
{
|
|
if (VERIFY_REFLOW_NOISY & gVerifyReflowFlags) {
|
|
printf("Building Verification Tree...\n");
|
|
}
|
|
|
|
// Create a presentation context to view the new frame tree
|
|
nsRefPtr<nsPresContext> cx =
|
|
new nsRootPresContext(mDocument, mPresContext->IsPaginated() ?
|
|
nsPresContext::eContext_PrintPreview :
|
|
nsPresContext::eContext_Galley);
|
|
NS_ENSURE_TRUE(cx, PR_FALSE);
|
|
|
|
nsDeviceContext *dc = mPresContext->DeviceContext();
|
|
nsresult rv = cx->Init(dc);
|
|
NS_ENSURE_SUCCESS(rv, PR_FALSE);
|
|
|
|
// Get our scrolling preference
|
|
nsIView* rootView = mViewManager->GetRootView();
|
|
NS_ENSURE_TRUE(rootView->HasWidget(), PR_FALSE);
|
|
nsIWidget* parentWidget = rootView->GetWidget();
|
|
|
|
// Create a new view manager.
|
|
nsCOMPtr<nsIViewManager> vm = do_CreateInstance(kViewManagerCID);
|
|
NS_ENSURE_TRUE(vm, PR_FALSE);
|
|
rv = vm->Init(dc);
|
|
NS_ENSURE_SUCCESS(rv, PR_FALSE);
|
|
|
|
// Create a child window of the parent that is our "root view/window"
|
|
// Create a view
|
|
nsRect tbounds = mPresContext->GetVisibleArea();
|
|
nsIView* view = vm->CreateView(tbounds, nsnull);
|
|
NS_ENSURE_TRUE(view, PR_FALSE);
|
|
|
|
//now create the widget for the view
|
|
rv = view->CreateWidgetForParent(parentWidget, nsnull, PR_TRUE);
|
|
NS_ENSURE_SUCCESS(rv, PR_FALSE);
|
|
|
|
// Setup hierarchical relationship in view manager
|
|
vm->SetRootView(view);
|
|
|
|
// Make the new presentation context the same size as our
|
|
// presentation context.
|
|
nsRect r = mPresContext->GetVisibleArea();
|
|
cx->SetVisibleArea(r);
|
|
|
|
// Create a new presentation shell to view the document. Use the
|
|
// exact same style information that this document has.
|
|
nsAutoPtr<nsStyleSet> newSet;
|
|
rv = CloneStyleSet(mStyleSet, getter_Transfers(newSet));
|
|
NS_ENSURE_SUCCESS(rv, PR_FALSE);
|
|
nsCOMPtr<nsIPresShell> sh;
|
|
rv = mDocument->CreateShell(cx, vm, newSet, getter_AddRefs(sh));
|
|
NS_ENSURE_SUCCESS(rv, PR_FALSE);
|
|
newSet.forget();
|
|
// Note that after we create the shell, we must make sure to destroy it
|
|
sh->SetVerifyReflowEnable(PR_FALSE); // turn off verify reflow while we're reflowing the test frame tree
|
|
vm->SetViewObserver((nsIViewObserver *)((PresShell*)sh.get()));
|
|
{
|
|
nsAutoCauseReflowNotifier crNotifier(this);
|
|
sh->InitialReflow(r.width, r.height);
|
|
}
|
|
mDocument->BindingManager()->ProcessAttachedQueue();
|
|
sh->FlushPendingNotifications(Flush_Layout);
|
|
sh->SetVerifyReflowEnable(PR_TRUE); // turn on verify reflow again now that we're done reflowing the test frame tree
|
|
// Force the non-primary presshell to unsuppress; it doesn't want to normally
|
|
// because it thinks it's hidden
|
|
((PresShell*)sh.get())->mPaintingSuppressed = PR_FALSE;
|
|
if (VERIFY_REFLOW_NOISY & gVerifyReflowFlags) {
|
|
printf("Verification Tree built, comparing...\n");
|
|
}
|
|
|
|
// Now that the document has been reflowed, use its frame tree to
|
|
// compare against our frame tree.
|
|
nsIFrame* root1 = FrameManager()->GetRootFrame();
|
|
nsIFrame* root2 = sh->FrameManager()->GetRootFrame();
|
|
PRBool ok = CompareTrees(mPresContext, root1, cx, root2);
|
|
if (!ok && (VERIFY_REFLOW_NOISY & gVerifyReflowFlags)) {
|
|
printf("Verify reflow failed, primary tree:\n");
|
|
root1->List(stdout, 0);
|
|
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;
|
|
stra.AppendLiteral("C:\\mozilla\\mozilla\\debug\\filea");
|
|
stra.AppendInt(num);
|
|
stra.AppendLiteral(".png");
|
|
DumpToPNG(sh, stra);
|
|
nsString strb;
|
|
strb.AppendLiteral("C:\\mozilla\\mozilla\\debug\\fileb");
|
|
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, PRInt32 aIndent)
|
|
{
|
|
nsStyleContext *sc = aRootFrame->GetStyleContext();
|
|
if (sc)
|
|
sc->List(out, aIndent);
|
|
}
|
|
|
|
void
|
|
PresShell::ListStyleSheets(FILE *out, PRInt32 aIndent)
|
|
{
|
|
PRInt32 sheetCount = mStyleSet->SheetCount(nsStyleSet::eDocSheet);
|
|
for (PRInt32 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) {
|
|
nsCAutoString 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,
|
|
PRUint32 aColor)
|
|
{
|
|
if (mReflowCountMgr) {
|
|
mReflowCountMgr->PaintCount(aName, aRenderingContext, aPresContext,
|
|
aFrame, aOffset, aColor);
|
|
}
|
|
}
|
|
|
|
//-------------------------------------------------------------
|
|
void
|
|
PresShell::SetPaintFrameCount(PRBool aPaintFrameCounts)
|
|
{
|
|
if (mReflowCountMgr) {
|
|
mReflowCountMgr->SetPaintFrameCounts(aPaintFrameCounts);
|
|
}
|
|
}
|
|
|
|
PRBool
|
|
PresShell::IsPaintingFrameCounts()
|
|
{
|
|
if (mReflowCountMgr)
|
|
return mReflowCountMgr->IsPaintingFrameCounts();
|
|
return PR_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(PRUint32 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(PRUint32 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
|
|
//------------------------------------------------------------------
|
|
ReflowCountMgr::ReflowCountMgr()
|
|
{
|
|
mCounts = PL_NewHashTable(10, PL_HashString, PL_CompareStrings,
|
|
PL_CompareValues, nsnull, nsnull);
|
|
mIndiFrameCounts = PL_NewHashTable(10, PL_HashString, PL_CompareStrings,
|
|
PL_CompareValues, nsnull, nsnull);
|
|
mCycledOnce = PR_FALSE;
|
|
mDumpFrameCounts = PR_FALSE;
|
|
mDumpFrameByFrameCounts = PR_FALSE;
|
|
mPaintFrameByFrameCounts = PR_FALSE;
|
|
}
|
|
|
|
//------------------------------------------------------------------
|
|
ReflowCountMgr::~ReflowCountMgr()
|
|
{
|
|
CleanUp();
|
|
}
|
|
|
|
//------------------------------------------------------------------
|
|
ReflowCounter * ReflowCountMgr::LookUp(const char * aName)
|
|
{
|
|
if (nsnull != mCounts) {
|
|
ReflowCounter * counter = (ReflowCounter *)PL_HashTableLookup(mCounts, aName);
|
|
return counter;
|
|
}
|
|
return nsnull;
|
|
|
|
}
|
|
|
|
//------------------------------------------------------------------
|
|
void ReflowCountMgr::Add(const char * aName, nsIFrame * aFrame)
|
|
{
|
|
NS_ASSERTION(aName != nsnull, "Name shouldn't be null!");
|
|
|
|
if (mDumpFrameCounts && nsnull != mCounts) {
|
|
ReflowCounter * counter = (ReflowCounter *)PL_HashTableLookup(mCounts, aName);
|
|
if (counter == nsnull) {
|
|
counter = new ReflowCounter(this);
|
|
NS_ASSERTION(counter != nsnull, "null ptr");
|
|
char * name = NS_strdup(aName);
|
|
NS_ASSERTION(name != nsnull, "null ptr");
|
|
PL_HashTableAdd(mCounts, name, counter);
|
|
}
|
|
counter->Add();
|
|
}
|
|
|
|
if ((mDumpFrameByFrameCounts || mPaintFrameByFrameCounts) &&
|
|
nsnull != mIndiFrameCounts &&
|
|
aFrame != nsnull) {
|
|
char * key = new char[16];
|
|
sprintf(key, "%p", (void*)aFrame);
|
|
IndiReflowCounter * counter = (IndiReflowCounter *)PL_HashTableLookup(mIndiFrameCounts, key);
|
|
if (counter == nsnull) {
|
|
counter = new IndiReflowCounter(this);
|
|
NS_ASSERTION(counter != nsnull, "null ptr");
|
|
counter->mFrame = aFrame;
|
|
counter->mName.AssignASCII(aName);
|
|
PL_HashTableAdd(mIndiFrameCounts, key, counter);
|
|
}
|
|
// this eliminates extra counts from super classes
|
|
if (counter != nsnull && 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,
|
|
PRUint32 aColor)
|
|
{
|
|
if (mPaintFrameByFrameCounts &&
|
|
nsnull != mIndiFrameCounts &&
|
|
aFrame != nsnull) {
|
|
char * key = new char[16];
|
|
sprintf(key, "%p", (void*)aFrame);
|
|
IndiReflowCounter * counter =
|
|
(IndiReflowCounter *)PL_HashTableLookup(mIndiFrameCounts, key);
|
|
if (counter != nsnull && 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->GetMetricsFor(font);
|
|
aRenderingContext->SetFont(fm);
|
|
char buf[16];
|
|
sprintf(buf, "%d", counter->mCount);
|
|
nscoord x = 0, y = fm->MaxAscent();
|
|
nscoord width, height = fm->MaxHeight();
|
|
aRenderingContext->SetTextRunRTL(PR_FALSE);
|
|
width = aRenderingContext->GetWidth(buf);
|
|
|
|
PRUint32 color;
|
|
PRUint32 color2;
|
|
if (aColor != 0) {
|
|
color = aColor;
|
|
color2 = NS_RGB(0,0,0);
|
|
} else {
|
|
PRUint8 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();
|
|
}
|
|
}
|
|
}
|
|
|
|
//------------------------------------------------------------------
|
|
PRIntn ReflowCountMgr::RemoveItems(PLHashEntry *he, PRIntn i, void *arg)
|
|
{
|
|
char *str = (char *)he->key;
|
|
ReflowCounter * counter = (ReflowCounter *)he->value;
|
|
delete counter;
|
|
NS_Free(str);
|
|
|
|
return HT_ENUMERATE_REMOVE;
|
|
}
|
|
|
|
//------------------------------------------------------------------
|
|
PRIntn ReflowCountMgr::RemoveIndiItems(PLHashEntry *he, PRIntn 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 (nsnull != mCounts) {
|
|
PL_HashTableEnumerateEntries(mCounts, RemoveItems, nsnull);
|
|
PL_HashTableDestroy(mCounts);
|
|
mCounts = nsnull;
|
|
}
|
|
|
|
if (nsnull != mIndiFrameCounts) {
|
|
PL_HashTableEnumerateEntries(mIndiFrameCounts, RemoveIndiItems, nsnull);
|
|
PL_HashTableDestroy(mIndiFrameCounts);
|
|
mIndiFrameCounts = nsnull;
|
|
}
|
|
}
|
|
|
|
//------------------------------------------------------------------
|
|
PRIntn ReflowCountMgr::DoSingleTotal(PLHashEntry *he, PRIntn i, void *arg)
|
|
{
|
|
char *str = (char *)he->key;
|
|
ReflowCounter * counter = (ReflowCounter *)he->value;
|
|
|
|
counter->DisplayTotals(str);
|
|
|
|
return HT_ENUMERATE_NEXT;
|
|
}
|
|
|
|
//------------------------------------------------------------------
|
|
void ReflowCountMgr::DoGrandTotals()
|
|
{
|
|
if (nsnull != mCounts) {
|
|
ReflowCounter * gTots = (ReflowCounter *)PL_HashTableLookup(mCounts, kGrandTotalsStr);
|
|
if (gTots == nsnull) {
|
|
gTots = new ReflowCounter(this);
|
|
PL_HashTableAdd(mCounts, NS_strdup(kGrandTotalsStr), gTots);
|
|
} else {
|
|
gTots->ClearTotals();
|
|
}
|
|
|
|
printf("\t\t\t\tTotal\n");
|
|
for (PRUint32 i=0;i<78;i++) {
|
|
printf("-");
|
|
}
|
|
printf("\n");
|
|
PL_HashTableEnumerateEntries(mCounts, DoSingleTotal, this);
|
|
}
|
|
}
|
|
|
|
static void RecurseIndiTotals(nsPresContext* aPresContext,
|
|
PLHashTable * aHT,
|
|
nsIFrame * aParentFrame,
|
|
PRInt32 aLevel)
|
|
{
|
|
if (aParentFrame == nsnull) {
|
|
return;
|
|
}
|
|
|
|
char key[16];
|
|
sprintf(key, "%p", (void*)aParentFrame);
|
|
IndiReflowCounter * counter = (IndiReflowCounter *)PL_HashTableLookup(aHT, key);
|
|
if (counter) {
|
|
counter->mHasBeenOutput = PR_TRUE;
|
|
char * name = ToNewCString(counter->mName);
|
|
for (PRInt32 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->GetFirstChild(nsnull);
|
|
while (child) {
|
|
RecurseIndiTotals(aPresContext, aHT, child, aLevel+1);
|
|
child = child->GetNextSibling();
|
|
}
|
|
|
|
}
|
|
|
|
//------------------------------------------------------------------
|
|
PRIntn ReflowCountMgr::DoSingleIndi(PLHashEntry *he, PRIntn 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 (nsnull != 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);
|
|
}
|
|
}
|
|
}
|
|
|
|
//------------------------------------------------------------------
|
|
PRIntn ReflowCountMgr::DoSingleHTMLTotal(PLHashEntry *he, PRIntn i, void *arg)
|
|
{
|
|
char *str = (char *)he->key;
|
|
ReflowCounter * counter = (ReflowCounter *)he->value;
|
|
|
|
counter->DisplayHTMLTotals(str);
|
|
|
|
return HT_ENUMERATE_NEXT;
|
|
}
|
|
|
|
//------------------------------------------------------------------
|
|
void ReflowCountMgr::DoGrandHTMLTotals()
|
|
{
|
|
if (nsnull != mCounts) {
|
|
ReflowCounter * gTots = (ReflowCounter *)PL_HashTableLookup(mCounts, kGrandTotalsStr);
|
|
if (gTots == nsnull) {
|
|
gTots = new ReflowCounter(this);
|
|
PL_HashTableAdd(mCounts, NS_strdup(kGrandTotalsStr), gTots);
|
|
} else {
|
|
gTots->ClearTotals();
|
|
}
|
|
|
|
static const char * title[] = {"Class", "Reflows"};
|
|
fprintf(mFD, "<tr>");
|
|
for (PRUint32 i=0; i < NS_ARRAY_LENGTH(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 = nsnull;
|
|
}
|
|
#endif // not XP!
|
|
}
|
|
|
|
//------------------------------------------------------------------
|
|
PRIntn ReflowCountMgr::DoClearTotals(PLHashEntry *he, PRIntn 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 (nsnull != mCounts) {
|
|
ReflowCounter * gTots = (ReflowCounter *)PL_HashTableLookup(mCounts, kGrandTotalsStr);
|
|
if (gTots == nsnull) {
|
|
gTots = new ReflowCounter(this);
|
|
PL_HashTableAdd(mCounts, NS_strdup(kGrandTotalsStr), gTots);
|
|
} else {
|
|
gTots->ClearTotals();
|
|
gTots->SetTotalsCache();
|
|
}
|
|
}
|
|
}
|
|
|
|
//------------------------------------------------------------------
|
|
PRIntn ReflowCountMgr::DoDisplayDiffTotals(PLHashEntry *he, PRIntn i, void *arg)
|
|
{
|
|
PRBool 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 (PRInt32 i=0;i<78;i++) {
|
|
printf("-");
|
|
}
|
|
printf("\n");
|
|
ClearGrandTotals();
|
|
}
|
|
PL_HashTableEnumerateEntries(mCounts, DoDisplayDiffTotals, (void *)mCycledOnce);
|
|
|
|
mCycledOnce = PR_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);
|
|
}
|
|
|
|
#ifdef ACCESSIBILITY
|
|
nsAccessibilityService*
|
|
nsIPresShell::AccService()
|
|
{
|
|
return GetAccService();
|
|
}
|
|
#endif
|
|
|
|
void nsIPresShell::InitializeStatics()
|
|
{
|
|
NS_ASSERTION(sLiveShells == nsnull, "InitializeStatics called multiple times!");
|
|
sLiveShells = new nsTHashtable<PresShellPtrKey>();
|
|
sLiveShells->Init();
|
|
}
|
|
|
|
void nsIPresShell::ReleaseStatics()
|
|
{
|
|
NS_ASSERTION(sLiveShells, "ReleaseStatics called without Initialize!");
|
|
delete sLiveShells;
|
|
sLiveShells = nsnull;
|
|
}
|
|
|
|
// 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) {
|
|
PRBool isActive;
|
|
nsresult rv = docshell->GetIsActive(&isActive);
|
|
if (NS_SUCCEEDED(rv))
|
|
SetIsActive(isActive);
|
|
}
|
|
}
|
|
|
|
// Helper for propagating mIsActive changes to external resources
|
|
static PRBool
|
|
SetExternalResourceIsActive(nsIDocument* aDocument, void* aClosure)
|
|
{
|
|
nsIPresShell* shell = aDocument->GetShell();
|
|
if (shell) {
|
|
shell->SetIsActive(*static_cast<PRBool*>(aClosure));
|
|
}
|
|
return PR_TRUE;
|
|
}
|
|
|
|
nsresult
|
|
PresShell::SetIsActive(PRBool 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);
|
|
nsresult rv = UpdateImageLockingState();
|
|
#ifdef ACCESSIBILITY
|
|
nsAccessibilityService* accService = AccService();
|
|
if (accService) {
|
|
accService->PresShellActivated(this);
|
|
}
|
|
#endif
|
|
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 nsnull;
|
|
}
|