mirror of
https://gitlab.winehq.org/wine/wine-gecko.git
synced 2024-09-13 09:24:08 -07:00
d789ef0b1b
This is the third of three patches to rework the way we handle getting the font inflation container and width data during reflow, which are needed so that we can sometimes honor inflation during intrinsic width calculation (which we need to do to make some form controls inflate correctly).
2667 lines
85 KiB
C++
2667 lines
85 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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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 Communicator client 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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* Pierre Phaneuf <pp@ludusdesign.com>
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* Mats Palmgren <matspal@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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#include "nscore.h"
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#include "nsCOMPtr.h"
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#include "nsReadableUtils.h"
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#include "nsUnicharUtils.h"
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#include "nsListControlFrame.h"
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#include "nsFormControlFrame.h" // for COMPARE macro
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#include "nsGkAtoms.h"
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#include "nsIFormControl.h"
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#include "nsIDocument.h"
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#include "nsIDOMHTMLCollection.h"
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#include "nsIDOMHTMLOptionsCollection.h"
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#include "nsIDOMHTMLSelectElement.h"
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#include "nsIDOMHTMLOptionElement.h"
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#include "nsComboboxControlFrame.h"
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#include "nsIViewManager.h"
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#include "nsIDOMHTMLOptGroupElement.h"
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#include "nsWidgetsCID.h"
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#include "nsIPresShell.h"
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#include "nsHTMLParts.h"
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#include "nsIDOMEventTarget.h"
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#include "nsEventDispatcher.h"
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#include "nsEventStateManager.h"
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#include "nsEventListenerManager.h"
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#include "nsIDOMKeyEvent.h"
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#include "nsIDOMMouseEvent.h"
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#include "nsIPrivateDOMEvent.h"
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#include "nsXPCOM.h"
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#include "nsISupportsPrimitives.h"
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#include "nsIComponentManager.h"
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#include "nsFontMetrics.h"
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#include "nsIScrollableFrame.h"
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#include "nsIDOMNSEvent.h"
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#include "nsGUIEvent.h"
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#include "nsIServiceManager.h"
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#include "nsINodeInfo.h"
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#ifdef ACCESSIBILITY
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#include "nsAccessibilityService.h"
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#endif
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#include "nsHTMLSelectElement.h"
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#include "nsIPrivateDOMEvent.h"
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#include "nsCSSRendering.h"
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#include "nsITheme.h"
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#include "nsIDOMEventListener.h"
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#include "nsLayoutUtils.h"
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#include "nsDisplayList.h"
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#include "nsContentUtils.h"
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#include "mozilla/LookAndFeel.h"
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using namespace mozilla;
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// Constants
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const nscoord kMaxDropDownRows = 20; // This matches the setting for 4.x browsers
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const PRInt32 kNothingSelected = -1;
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// Static members
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nsListControlFrame * nsListControlFrame::mFocused = nsnull;
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nsString * nsListControlFrame::sIncrementalString = nsnull;
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|
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// Using for incremental typing navigation
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#define INCREMENTAL_SEARCH_KEYPRESS_TIME 1000
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// XXX, kyle.yuan@sun.com, there are 4 definitions for the same purpose:
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// nsMenuPopupFrame.h, nsListControlFrame.cpp, listbox.xml, tree.xml
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// need to find a good place to put them together.
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// if someone changes one, please also change the other.
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DOMTimeStamp nsListControlFrame::gLastKeyTime = 0;
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/******************************************************************************
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* nsListEventListener
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* This class is responsible for propagating events to the nsListControlFrame.
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* Frames are not refcounted so they can't be used as event listeners.
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*****************************************************************************/
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class nsListEventListener : public nsIDOMEventListener
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{
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public:
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nsListEventListener(nsListControlFrame *aFrame)
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: mFrame(aFrame) { }
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void SetFrame(nsListControlFrame *aFrame) { mFrame = aFrame; }
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NS_DECL_ISUPPORTS
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NS_DECL_NSIDOMEVENTLISTENER
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private:
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nsListControlFrame *mFrame;
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};
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//---------------------------------------------------------
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nsIFrame*
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NS_NewListControlFrame(nsIPresShell* aPresShell, nsStyleContext* aContext)
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{
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nsListControlFrame* it =
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new (aPresShell) nsListControlFrame(aPresShell, aPresShell->GetDocument(), aContext);
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if (it) {
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it->AddStateBits(NS_FRAME_INDEPENDENT_SELECTION);
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}
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return it;
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}
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NS_IMPL_FRAMEARENA_HELPERS(nsListControlFrame)
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//---------------------------------------------------------
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nsListControlFrame::nsListControlFrame(
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nsIPresShell* aShell, nsIDocument* aDocument, nsStyleContext* aContext)
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: nsHTMLScrollFrame(aShell, aContext, false),
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mMightNeedSecondPass(false),
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mHasPendingInterruptAtStartOfReflow(false),
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mLastDropdownComputedHeight(NS_UNCONSTRAINEDSIZE)
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{
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mComboboxFrame = nsnull;
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mChangesSinceDragStart = false;
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mButtonDown = false;
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mIsAllContentHere = false;
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mIsAllFramesHere = false;
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mHasBeenInitialized = false;
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mNeedToReset = true;
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mPostChildrenLoadedReset = false;
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mControlSelectMode = false;
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}
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//---------------------------------------------------------
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nsListControlFrame::~nsListControlFrame()
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{
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mComboboxFrame = nsnull;
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}
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// for Bug 47302 (remove this comment later)
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void
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nsListControlFrame::DestroyFrom(nsIFrame* aDestructRoot)
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{
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// get the receiver interface from the browser button's content node
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ENSURE_TRUE(mContent);
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// Clear the frame pointer on our event listener, just in case the
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// event listener can outlive the frame.
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mEventListener->SetFrame(nsnull);
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mContent->RemoveEventListener(NS_LITERAL_STRING("keypress"), mEventListener,
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false);
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mContent->RemoveEventListener(NS_LITERAL_STRING("mousedown"), mEventListener,
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false);
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mContent->RemoveEventListener(NS_LITERAL_STRING("mouseup"), mEventListener,
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false);
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mContent->RemoveEventListener(NS_LITERAL_STRING("mousemove"), mEventListener,
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false);
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nsFormControlFrame::RegUnRegAccessKey(static_cast<nsIFrame*>(this), false);
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nsHTMLScrollFrame::DestroyFrom(aDestructRoot);
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}
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NS_IMETHODIMP
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nsListControlFrame::BuildDisplayList(nsDisplayListBuilder* aBuilder,
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const nsRect& aDirtyRect,
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const nsDisplayListSet& aLists)
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{
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// We allow visibility:hidden <select>s to contain visible options.
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// Don't allow painting of list controls when painting is suppressed.
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// XXX why do we need this here? we should never reach this. Maybe
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// because these can have widgets? Hmm
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if (aBuilder->IsBackgroundOnly())
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return NS_OK;
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DO_GLOBAL_REFLOW_COUNT_DSP("nsListControlFrame");
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if (IsInDropDownMode()) {
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NS_ASSERTION(NS_GET_A(mLastDropdownBackstopColor) == 255,
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"need an opaque backstop color");
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// XXX Because we have an opaque widget and we get called to paint with
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// this frame as the root of a stacking context we need make sure to draw
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// some opaque color over the whole widget. (Bug 511323)
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aLists.BorderBackground()->AppendNewToBottom(
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new (aBuilder) nsDisplaySolidColor(aBuilder,
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this, nsRect(aBuilder->ToReferenceFrame(this), GetSize()),
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mLastDropdownBackstopColor));
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}
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// REVIEW: The selection visibility code that used to be here is what
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// we already do by default.
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// REVIEW: There was code here to paint the theme background. But as far
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// as I can tell, we'd just paint the theme background twice because
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// it was redundant with nsCSSRendering::PaintBackground
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return nsHTMLScrollFrame::BuildDisplayList(aBuilder, aDirtyRect, aLists);
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}
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/**
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* This is called by the SelectsAreaFrame, which is the same
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* as the frame returned by GetOptionsContainer. It's the frame which is
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* scrolled by us.
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* @param aPt the offset of this frame, relative to the rendering reference
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* frame
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*/
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void nsListControlFrame::PaintFocus(nsRenderingContext& aRC, nsPoint aPt)
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{
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if (mFocused != this) return;
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nsPresContext* presContext = PresContext();
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nsIFrame* containerFrame = GetOptionsContainer();
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if (!containerFrame) return;
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nsIFrame* childframe = nsnull;
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nsCOMPtr<nsIContent> focusedContent = GetCurrentOption();
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if (focusedContent) {
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childframe = focusedContent->GetPrimaryFrame();
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}
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nsRect fRect;
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if (childframe) {
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// get the child rect
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fRect = childframe->GetRect();
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// get it into our coordinates
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fRect.MoveBy(childframe->GetParent()->GetOffsetTo(this));
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} else {
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float inflation = nsLayoutUtils::FontSizeInflationFor(this,
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nsLayoutUtils::eNotInReflow);
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fRect.x = fRect.y = 0;
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fRect.width = GetScrollPortRect().width;
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fRect.height = CalcFallbackRowHeight(inflation);
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fRect.MoveBy(containerFrame->GetOffsetTo(this));
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}
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fRect += aPt;
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bool lastItemIsSelected = false;
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if (focusedContent) {
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nsCOMPtr<nsIDOMHTMLOptionElement> domOpt =
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do_QueryInterface(focusedContent);
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if (domOpt) {
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domOpt->GetSelected(&lastItemIsSelected);
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}
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}
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// set up back stop colors and then ask L&F service for the real colors
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nscolor color =
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LookAndFeel::GetColor(lastItemIsSelected ?
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LookAndFeel::eColorID_WidgetSelectForeground :
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LookAndFeel::eColorID_WidgetSelectBackground);
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nsCSSRendering::PaintFocus(presContext, aRC, fRect, color);
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}
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void
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nsListControlFrame::InvalidateFocus(const nsHTMLReflowState *aReflowState)
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{
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if (mFocused != this)
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return;
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nsIFrame* containerFrame = GetOptionsContainer();
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if (containerFrame) {
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// Invalidating from the containerFrame because that's where our focus
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// is drawn.
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// The origin of the scrollport is the origin of containerFrame.
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float inflation = nsLayoutUtils::FontSizeInflationFor(this,
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aReflowState ? nsLayoutUtils::eInReflow
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: nsLayoutUtils::eNotInReflow);
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nsRect invalidateArea = containerFrame->GetVisualOverflowRect();
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nsRect emptyFallbackArea(0, 0, GetScrollPortRect().width,
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CalcFallbackRowHeight(inflation));
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invalidateArea.UnionRect(invalidateArea, emptyFallbackArea);
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containerFrame->Invalidate(invalidateArea);
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}
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}
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NS_QUERYFRAME_HEAD(nsListControlFrame)
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NS_QUERYFRAME_ENTRY(nsIFormControlFrame)
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NS_QUERYFRAME_ENTRY(nsIListControlFrame)
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NS_QUERYFRAME_ENTRY(nsISelectControlFrame)
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NS_QUERYFRAME_TAIL_INHERITING(nsHTMLScrollFrame)
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#ifdef ACCESSIBILITY
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already_AddRefed<nsAccessible>
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nsListControlFrame::CreateAccessible()
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{
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nsAccessibilityService* accService = nsIPresShell::AccService();
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if (accService) {
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return accService->CreateHTMLListboxAccessible(mContent,
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PresContext()->PresShell());
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}
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return nsnull;
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}
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#endif
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static nscoord
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GetMaxOptionHeight(nsIFrame* aContainer)
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{
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nscoord result = 0;
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for (nsIFrame* option = aContainer->GetFirstPrincipalChild();
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option; option = option->GetNextSibling()) {
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nscoord optionHeight;
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if (nsCOMPtr<nsIDOMHTMLOptGroupElement>
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(do_QueryInterface(option->GetContent()))) {
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// an optgroup
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optionHeight = GetMaxOptionHeight(option);
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} else {
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// an option
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optionHeight = option->GetSize().height;
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}
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if (result < optionHeight)
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result = optionHeight;
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}
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return result;
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}
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static PRUint32
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GetNumberOfOptionsRecursive(nsIContent* aContent)
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{
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if (!aContent) {
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return 0;
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}
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PRUint32 optionCount = 0;
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for (nsIContent* cur = aContent->GetFirstChild();
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cur;
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cur = cur->GetNextSibling()) {
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if (cur->IsHTML(nsGkAtoms::option)) {
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++optionCount;
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} else if (cur->IsHTML(nsGkAtoms::optgroup)) {
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optionCount += GetNumberOfOptionsRecursive(cur);
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}
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}
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return optionCount;
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}
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//-----------------------------------------------------------------
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// Main Reflow for ListBox/Dropdown
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//-----------------------------------------------------------------
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nscoord
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nsListControlFrame::CalcHeightOfARow()
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{
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// Calculate the height of a single row in the listbox or dropdown list by
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// using the tallest thing in the subtree, since there may be option groups
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// in addition to option elements, either of which may be visible or
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// invisible, may use different fonts, etc.
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PRInt32 heightOfARow = GetMaxOptionHeight(GetOptionsContainer());
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// Check to see if we have zero items (and optimize by checking
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// heightOfARow first)
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if (heightOfARow == 0 && GetNumberOfOptions() == 0) {
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float inflation =
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nsLayoutUtils::FontSizeInflationInner(this, nsLayoutUtils::eInReflow);
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heightOfARow = CalcFallbackRowHeight(inflation);
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}
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return heightOfARow;
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}
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nscoord
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nsListControlFrame::GetPrefWidth(nsRenderingContext *aRenderingContext)
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{
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nscoord result;
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DISPLAY_PREF_WIDTH(this, result);
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|
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// Always add scrollbar widths to the pref-width of the scrolled
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// content. Combobox frames depend on this happening in the dropdown,
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// and standalone listboxes are overflow:scroll so they need it too.
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result = GetScrolledFrame()->GetPrefWidth(aRenderingContext);
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result = NSCoordSaturatingAdd(result,
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GetDesiredScrollbarSizes(PresContext(), aRenderingContext).LeftRight());
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return result;
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}
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nscoord
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nsListControlFrame::GetMinWidth(nsRenderingContext *aRenderingContext)
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{
|
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nscoord result;
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DISPLAY_MIN_WIDTH(this, result);
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|
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// Always add scrollbar widths to the min-width of the scrolled
|
|
// content. Combobox frames depend on this happening in the dropdown,
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// and standalone listboxes are overflow:scroll so they need it too.
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result = GetScrolledFrame()->GetMinWidth(aRenderingContext);
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result += GetDesiredScrollbarSizes(PresContext(), aRenderingContext).LeftRight();
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return result;
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}
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NS_IMETHODIMP
|
|
nsListControlFrame::Reflow(nsPresContext* aPresContext,
|
|
nsHTMLReflowMetrics& aDesiredSize,
|
|
const nsHTMLReflowState& aReflowState,
|
|
nsReflowStatus& aStatus)
|
|
{
|
|
NS_PRECONDITION(aReflowState.ComputedWidth() != NS_UNCONSTRAINEDSIZE,
|
|
"Must have a computed width");
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|
|
|
mHasPendingInterruptAtStartOfReflow = aPresContext->HasPendingInterrupt();
|
|
|
|
// If all the content and frames are here
|
|
// then initialize it before reflow
|
|
if (mIsAllContentHere && !mHasBeenInitialized) {
|
|
if (false == mIsAllFramesHere) {
|
|
CheckIfAllFramesHere();
|
|
}
|
|
if (mIsAllFramesHere && !mHasBeenInitialized) {
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|
mHasBeenInitialized = true;
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|
}
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|
}
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|
|
if (GetStateBits() & NS_FRAME_FIRST_REFLOW) {
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|
nsFormControlFrame::RegUnRegAccessKey(this, true);
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|
}
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|
|
|
if (IsInDropDownMode()) {
|
|
return ReflowAsDropdown(aPresContext, aDesiredSize, aReflowState, aStatus);
|
|
}
|
|
|
|
/*
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|
* Due to the fact that our intrinsic height depends on the heights of our
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|
* kids, we end up having to do two-pass reflow, in general -- the first pass
|
|
* to find the intrinsic height and a second pass to reflow the scrollframe
|
|
* at that height (which will size the scrollbars correctly, etc).
|
|
*
|
|
* Naturaly, we want to avoid doing the second reflow as much as possible.
|
|
* We can skip it in the following cases (in all of which the first reflow is
|
|
* already happening at the right height):
|
|
*
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|
* - We're reflowing with a constrained computed height -- just use that
|
|
* height.
|
|
* - We're not dirty and have no dirty kids and shouldn't be reflowing all
|
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* kids. In this case, our cached max height of a child is not going to
|
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* change.
|
|
* - We do our first reflow using our cached max height of a child, then
|
|
* compute the new max height and it's the same as the old one.
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|
*/
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|
bool autoHeight = (aReflowState.ComputedHeight() == NS_UNCONSTRAINEDSIZE);
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mMightNeedSecondPass = autoHeight &&
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(NS_SUBTREE_DIRTY(this) || aReflowState.ShouldReflowAllKids());
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nsHTMLReflowState state(aReflowState);
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PRInt32 length = GetNumberOfOptions();
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|
|
nscoord oldHeightOfARow = HeightOfARow();
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|
|
if (!(GetStateBits() & NS_FRAME_FIRST_REFLOW) && autoHeight) {
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|
// When not doing an initial reflow, and when the height is auto, start off
|
|
// with our computed height set to what we'd expect our height to be.
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|
nscoord computedHeight = CalcIntrinsicHeight(oldHeightOfARow, length);
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state.ApplyMinMaxConstraints(nsnull, &computedHeight);
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state.SetComputedHeight(computedHeight);
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|
}
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|
|
nsresult rv = nsHTMLScrollFrame::Reflow(aPresContext, aDesiredSize,
|
|
state, aStatus);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
if (!mMightNeedSecondPass) {
|
|
NS_ASSERTION(!autoHeight || HeightOfARow() == oldHeightOfARow,
|
|
"How did our height of a row change if nothing was dirty?");
|
|
NS_ASSERTION(!autoHeight ||
|
|
!(GetStateBits() & NS_FRAME_FIRST_REFLOW),
|
|
"How do we not need a second pass during initial reflow at "
|
|
"auto height?");
|
|
NS_ASSERTION(!IsScrollbarUpdateSuppressed(),
|
|
"Shouldn't be suppressing if we don't need a second pass!");
|
|
if (!autoHeight) {
|
|
// Update our mNumDisplayRows based on our new row height now that we
|
|
// know it. Note that if autoHeight and we landed in this code then we
|
|
// already set mNumDisplayRows in CalcIntrinsicHeight. Also note that we
|
|
// can't use HeightOfARow() here because that just uses a cached value
|
|
// that we didn't compute.
|
|
nscoord rowHeight = CalcHeightOfARow();
|
|
if (rowHeight == 0) {
|
|
// Just pick something
|
|
mNumDisplayRows = 1;
|
|
} else {
|
|
mNumDisplayRows = NS_MAX(1, state.ComputedHeight() / rowHeight);
|
|
}
|
|
}
|
|
|
|
return rv;
|
|
}
|
|
|
|
mMightNeedSecondPass = false;
|
|
|
|
// Now see whether we need a second pass. If we do, our nsSelectsAreaFrame
|
|
// will have suppressed the scrollbar update.
|
|
if (!IsScrollbarUpdateSuppressed()) {
|
|
// All done. No need to do more reflow.
|
|
NS_ASSERTION(!IsScrollbarUpdateSuppressed(),
|
|
"Shouldn't be suppressing if the height of a row has not "
|
|
"changed!");
|
|
return rv;
|
|
}
|
|
|
|
SetSuppressScrollbarUpdate(false);
|
|
|
|
// Gotta reflow again.
|
|
// XXXbz We're just changing the height here; do we need to dirty ourselves
|
|
// or anything like that? We might need to, per the letter of the reflow
|
|
// protocol, but things seem to work fine without it... Is that just an
|
|
// implementation detail of nsHTMLScrollFrame that we're depending on?
|
|
nsHTMLScrollFrame::DidReflow(aPresContext, &state, aStatus);
|
|
|
|
// Now compute the height we want to have
|
|
nscoord computedHeight = CalcIntrinsicHeight(HeightOfARow(), length);
|
|
state.ApplyMinMaxConstraints(nsnull, &computedHeight);
|
|
state.SetComputedHeight(computedHeight);
|
|
|
|
nsHTMLScrollFrame::WillReflow(aPresContext);
|
|
|
|
// XXXbz to make the ascent really correct, we should add our
|
|
// mComputedPadding.top to it (and subtract it from descent). Need that
|
|
// because nsGfxScrollFrame just adds in the border....
|
|
return nsHTMLScrollFrame::Reflow(aPresContext, aDesiredSize, state, aStatus);
|
|
}
|
|
|
|
nsresult
|
|
nsListControlFrame::ReflowAsDropdown(nsPresContext* aPresContext,
|
|
nsHTMLReflowMetrics& aDesiredSize,
|
|
const nsHTMLReflowState& aReflowState,
|
|
nsReflowStatus& aStatus)
|
|
{
|
|
NS_PRECONDITION(aReflowState.ComputedHeight() == NS_UNCONSTRAINEDSIZE,
|
|
"We should not have a computed height here!");
|
|
|
|
mMightNeedSecondPass = NS_SUBTREE_DIRTY(this) ||
|
|
aReflowState.ShouldReflowAllKids();
|
|
|
|
#ifdef DEBUG
|
|
nscoord oldHeightOfARow = HeightOfARow();
|
|
#endif
|
|
|
|
nsHTMLReflowState state(aReflowState);
|
|
|
|
nscoord oldVisibleHeight;
|
|
if (!(GetStateBits() & NS_FRAME_FIRST_REFLOW)) {
|
|
// When not doing an initial reflow, and when the height is auto, start off
|
|
// with our computed height set to what we'd expect our height to be.
|
|
// Note: At this point, mLastDropdownComputedHeight can be
|
|
// NS_UNCONSTRAINEDSIZE in cases when last time we didn't have to constrain
|
|
// the height. That's fine; just do the same thing as last time.
|
|
state.SetComputedHeight(mLastDropdownComputedHeight);
|
|
oldVisibleHeight = GetScrolledFrame()->GetSize().height;
|
|
} else {
|
|
// Set oldVisibleHeight to something that will never test true against a
|
|
// real height.
|
|
oldVisibleHeight = NS_UNCONSTRAINEDSIZE;
|
|
}
|
|
|
|
nsresult rv = nsHTMLScrollFrame::Reflow(aPresContext, aDesiredSize,
|
|
state, aStatus);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
if (!mMightNeedSecondPass) {
|
|
NS_ASSERTION(oldVisibleHeight == GetScrolledFrame()->GetSize().height,
|
|
"How did our kid's height change if nothing was dirty?");
|
|
NS_ASSERTION(HeightOfARow() == oldHeightOfARow,
|
|
"How did our height of a row change if nothing was dirty?");
|
|
NS_ASSERTION(!IsScrollbarUpdateSuppressed(),
|
|
"Shouldn't be suppressing if we don't need a second pass!");
|
|
NS_ASSERTION(!(GetStateBits() & NS_FRAME_FIRST_REFLOW),
|
|
"How can we avoid a second pass during first reflow?");
|
|
return rv;
|
|
}
|
|
|
|
mMightNeedSecondPass = false;
|
|
|
|
// Now see whether we need a second pass. If we do, our nsSelectsAreaFrame
|
|
// will have suppressed the scrollbar update.
|
|
if (!IsScrollbarUpdateSuppressed()) {
|
|
// All done. No need to do more reflow.
|
|
NS_ASSERTION(!(GetStateBits() & NS_FRAME_FIRST_REFLOW),
|
|
"How can we avoid a second pass during first reflow?");
|
|
return rv;
|
|
}
|
|
|
|
SetSuppressScrollbarUpdate(false);
|
|
|
|
nscoord visibleHeight = GetScrolledFrame()->GetSize().height;
|
|
nscoord heightOfARow = HeightOfARow();
|
|
|
|
// Gotta reflow again.
|
|
// XXXbz We're just changing the height here; do we need to dirty ourselves
|
|
// or anything like that? We might need to, per the letter of the reflow
|
|
// protocol, but things seem to work fine without it... Is that just an
|
|
// implementation detail of nsHTMLScrollFrame that we're depending on?
|
|
nsHTMLScrollFrame::DidReflow(aPresContext, &state, aStatus);
|
|
|
|
// Now compute the height we want to have
|
|
mNumDisplayRows = kMaxDropDownRows;
|
|
if (visibleHeight > mNumDisplayRows * heightOfARow) {
|
|
visibleHeight = mNumDisplayRows * heightOfARow;
|
|
// This is an adaptive algorithm for figuring out how many rows
|
|
// should be displayed in the drop down. The standard size is 20 rows,
|
|
// but on 640x480 it is typically too big.
|
|
// This takes the height of the screen divides it by two and then subtracts off
|
|
// an estimated height of the combobox. I estimate it by taking the max element size
|
|
// of the drop down and multiplying it by 2 (this is arbitrary) then subtract off
|
|
// the border and padding of the drop down (again rather arbitrary)
|
|
// This all breaks down if the font of the combobox is a lot larger then the option items
|
|
// or CSS style has set the height of the combobox to be rather large.
|
|
// We can fix these cases later if they actually happen.
|
|
nsRect screen = nsFormControlFrame::GetUsableScreenRect(aPresContext);
|
|
nscoord screenHeight = screen.height;
|
|
|
|
nscoord availDropHgt = (screenHeight / 2) - (heightOfARow*2); // approx half screen minus combo size
|
|
availDropHgt -= aReflowState.mComputedBorderPadding.top + aReflowState.mComputedBorderPadding.bottom;
|
|
|
|
nscoord hgt = visibleHeight + aReflowState.mComputedBorderPadding.top + aReflowState.mComputedBorderPadding.bottom;
|
|
if (heightOfARow > 0) {
|
|
if (hgt > availDropHgt) {
|
|
visibleHeight = (availDropHgt / heightOfARow) * heightOfARow;
|
|
}
|
|
mNumDisplayRows = visibleHeight / heightOfARow;
|
|
} else {
|
|
// Hmmm, not sure what to do here. Punt, and make both of them one
|
|
visibleHeight = 1;
|
|
mNumDisplayRows = 1;
|
|
}
|
|
|
|
state.SetComputedHeight(mNumDisplayRows * heightOfARow);
|
|
// Note: no need to apply min/max constraints, since we have no such
|
|
// rules applied to the combobox dropdown.
|
|
// XXXbz this is ending up too big!! Figure out why.
|
|
} else if (visibleHeight == 0) {
|
|
// Looks like we have no options. Just size us to a single row height.
|
|
state.SetComputedHeight(heightOfARow);
|
|
} else {
|
|
// Not too big, not too small. Just use it!
|
|
state.SetComputedHeight(NS_UNCONSTRAINEDSIZE);
|
|
}
|
|
|
|
// Note: At this point, state.mComputedHeight can be NS_UNCONSTRAINEDSIZE in
|
|
// cases when there were some options, but not too many (so no scrollbar was
|
|
// needed). That's fine; just store that.
|
|
mLastDropdownComputedHeight = state.ComputedHeight();
|
|
|
|
nsHTMLScrollFrame::WillReflow(aPresContext);
|
|
return nsHTMLScrollFrame::Reflow(aPresContext, aDesiredSize, state, aStatus);
|
|
}
|
|
|
|
nsGfxScrollFrameInner::ScrollbarStyles
|
|
nsListControlFrame::GetScrollbarStyles() const
|
|
{
|
|
// We can't express this in the style system yet; when we can, this can go away
|
|
// and GetScrollbarStyles can be devirtualized
|
|
PRInt32 verticalStyle = IsInDropDownMode() ? NS_STYLE_OVERFLOW_AUTO
|
|
: NS_STYLE_OVERFLOW_SCROLL;
|
|
return nsGfxScrollFrameInner::ScrollbarStyles(NS_STYLE_OVERFLOW_HIDDEN,
|
|
verticalStyle);
|
|
}
|
|
|
|
bool
|
|
nsListControlFrame::ShouldPropagateComputedHeightToScrolledContent() const
|
|
{
|
|
return !IsInDropDownMode();
|
|
}
|
|
|
|
//---------------------------------------------------------
|
|
nsIFrame*
|
|
nsListControlFrame::GetContentInsertionFrame() {
|
|
return GetOptionsContainer()->GetContentInsertionFrame();
|
|
}
|
|
|
|
//---------------------------------------------------------
|
|
// Starts at the passed in content object and walks up the
|
|
// parent heierarchy looking for the nsIDOMHTMLOptionElement
|
|
//---------------------------------------------------------
|
|
nsIContent *
|
|
nsListControlFrame::GetOptionFromContent(nsIContent *aContent)
|
|
{
|
|
for (nsIContent* content = aContent; content; content = content->GetParent()) {
|
|
if (content->IsHTML(nsGkAtoms::option)) {
|
|
return content;
|
|
}
|
|
}
|
|
|
|
return nsnull;
|
|
}
|
|
|
|
//---------------------------------------------------------
|
|
// Finds the index of the hit frame's content in the list
|
|
// of option elements
|
|
//---------------------------------------------------------
|
|
PRInt32
|
|
nsListControlFrame::GetIndexFromContent(nsIContent *aContent)
|
|
{
|
|
nsCOMPtr<nsIDOMHTMLOptionElement> option;
|
|
option = do_QueryInterface(aContent);
|
|
if (option) {
|
|
PRInt32 retval;
|
|
option->GetIndex(&retval);
|
|
if (retval >= 0) {
|
|
return retval;
|
|
}
|
|
}
|
|
return kNothingSelected;
|
|
}
|
|
|
|
//---------------------------------------------------------
|
|
bool
|
|
nsListControlFrame::ExtendedSelection(PRInt32 aStartIndex,
|
|
PRInt32 aEndIndex,
|
|
bool aClearAll)
|
|
{
|
|
return SetOptionsSelectedFromFrame(aStartIndex, aEndIndex,
|
|
true, aClearAll);
|
|
}
|
|
|
|
//---------------------------------------------------------
|
|
bool
|
|
nsListControlFrame::SingleSelection(PRInt32 aClickedIndex, bool aDoToggle)
|
|
{
|
|
if (mComboboxFrame) {
|
|
mComboboxFrame->UpdateRecentIndex(GetSelectedIndex());
|
|
}
|
|
|
|
bool wasChanged = false;
|
|
// Get Current selection
|
|
if (aDoToggle) {
|
|
wasChanged = ToggleOptionSelectedFromFrame(aClickedIndex);
|
|
} else {
|
|
wasChanged = SetOptionsSelectedFromFrame(aClickedIndex, aClickedIndex,
|
|
true, true);
|
|
}
|
|
ScrollToIndex(aClickedIndex);
|
|
|
|
#ifdef ACCESSIBILITY
|
|
bool isCurrentOptionChanged = mEndSelectionIndex != aClickedIndex;
|
|
#endif
|
|
mStartSelectionIndex = aClickedIndex;
|
|
mEndSelectionIndex = aClickedIndex;
|
|
InvalidateFocus();
|
|
|
|
#ifdef ACCESSIBILITY
|
|
if (isCurrentOptionChanged) {
|
|
FireMenuItemActiveEvent();
|
|
}
|
|
#endif
|
|
|
|
return wasChanged;
|
|
}
|
|
|
|
void
|
|
nsListControlFrame::InitSelectionRange(PRInt32 aClickedIndex)
|
|
{
|
|
//
|
|
// If nothing is selected, set the start selection depending on where
|
|
// the user clicked and what the initial selection is:
|
|
// - if the user clicked *before* selectedIndex, set the start index to
|
|
// the end of the first contiguous selection.
|
|
// - if the user clicked *after* the end of the first contiguous
|
|
// selection, set the start index to selectedIndex.
|
|
// - if the user clicked *within* the first contiguous selection, set the
|
|
// start index to selectedIndex.
|
|
// The last two rules, of course, boil down to the same thing: if the user
|
|
// clicked >= selectedIndex, return selectedIndex.
|
|
//
|
|
// This makes it so that shift click works properly when you first click
|
|
// in a multiple select.
|
|
//
|
|
PRInt32 selectedIndex = GetSelectedIndex();
|
|
if (selectedIndex >= 0) {
|
|
// Get the end of the contiguous selection
|
|
nsCOMPtr<nsIDOMHTMLOptionsCollection> options = GetOptions(mContent);
|
|
NS_ASSERTION(options, "Collection of options is null!");
|
|
PRUint32 numOptions;
|
|
options->GetLength(&numOptions);
|
|
PRUint32 i;
|
|
// Push i to one past the last selected index in the group
|
|
for (i=selectedIndex+1; i < numOptions; i++) {
|
|
bool selected;
|
|
nsCOMPtr<nsIDOMHTMLOptionElement> option = GetOption(options, i);
|
|
option->GetSelected(&selected);
|
|
if (!selected) {
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (aClickedIndex < selectedIndex) {
|
|
// User clicked before selection, so start selection at end of
|
|
// contiguous selection
|
|
mStartSelectionIndex = i-1;
|
|
mEndSelectionIndex = selectedIndex;
|
|
} else {
|
|
// User clicked after selection, so start selection at start of
|
|
// contiguous selection
|
|
mStartSelectionIndex = selectedIndex;
|
|
mEndSelectionIndex = i-1;
|
|
}
|
|
}
|
|
}
|
|
|
|
//---------------------------------------------------------
|
|
bool
|
|
nsListControlFrame::PerformSelection(PRInt32 aClickedIndex,
|
|
bool aIsShift,
|
|
bool aIsControl)
|
|
{
|
|
bool wasChanged = false;
|
|
|
|
if (aClickedIndex == kNothingSelected) {
|
|
}
|
|
else if (GetMultiple()) {
|
|
if (aIsShift) {
|
|
// Make sure shift+click actually does something expected when
|
|
// the user has never clicked on the select
|
|
if (mStartSelectionIndex == kNothingSelected) {
|
|
InitSelectionRange(aClickedIndex);
|
|
}
|
|
|
|
// Get the range from beginning (low) to end (high)
|
|
// Shift *always* works, even if the current option is disabled
|
|
PRInt32 startIndex;
|
|
PRInt32 endIndex;
|
|
if (mStartSelectionIndex == kNothingSelected) {
|
|
startIndex = aClickedIndex;
|
|
endIndex = aClickedIndex;
|
|
} else if (mStartSelectionIndex <= aClickedIndex) {
|
|
startIndex = mStartSelectionIndex;
|
|
endIndex = aClickedIndex;
|
|
} else {
|
|
startIndex = aClickedIndex;
|
|
endIndex = mStartSelectionIndex;
|
|
}
|
|
|
|
// Clear only if control was not pressed
|
|
wasChanged = ExtendedSelection(startIndex, endIndex, !aIsControl);
|
|
ScrollToIndex(aClickedIndex);
|
|
|
|
if (mStartSelectionIndex == kNothingSelected) {
|
|
mStartSelectionIndex = aClickedIndex;
|
|
}
|
|
#ifdef ACCESSIBILITY
|
|
bool isCurrentOptionChanged = mEndSelectionIndex != aClickedIndex;
|
|
#endif
|
|
mEndSelectionIndex = aClickedIndex;
|
|
InvalidateFocus();
|
|
|
|
#ifdef ACCESSIBILITY
|
|
if (isCurrentOptionChanged) {
|
|
FireMenuItemActiveEvent();
|
|
}
|
|
#endif
|
|
} else if (aIsControl) {
|
|
wasChanged = SingleSelection(aClickedIndex, true);
|
|
} else {
|
|
wasChanged = SingleSelection(aClickedIndex, false);
|
|
}
|
|
} else {
|
|
wasChanged = SingleSelection(aClickedIndex, false);
|
|
}
|
|
|
|
return wasChanged;
|
|
}
|
|
|
|
//---------------------------------------------------------
|
|
bool
|
|
nsListControlFrame::HandleListSelection(nsIDOMEvent* aEvent,
|
|
PRInt32 aClickedIndex)
|
|
{
|
|
nsCOMPtr<nsIDOMMouseEvent> mouseEvent = do_QueryInterface(aEvent);
|
|
bool isShift;
|
|
bool isControl;
|
|
#ifdef XP_MACOSX
|
|
mouseEvent->GetMetaKey(&isControl);
|
|
#else
|
|
mouseEvent->GetCtrlKey(&isControl);
|
|
#endif
|
|
mouseEvent->GetShiftKey(&isShift);
|
|
return PerformSelection(aClickedIndex, isShift, isControl);
|
|
}
|
|
|
|
//---------------------------------------------------------
|
|
void
|
|
nsListControlFrame::CaptureMouseEvents(bool aGrabMouseEvents)
|
|
{
|
|
// Currently cocoa widgets use a native popup widget which tracks clicks synchronously,
|
|
// so we never want to do mouse capturing. Note that we only bail if the list
|
|
// is in drop-down mode, and the caller is requesting capture (we let release capture
|
|
// requests go through to ensure that we can release capture requested via other
|
|
// code paths, if any exist).
|
|
if (aGrabMouseEvents && IsInDropDownMode() && nsComboboxControlFrame::ToolkitHasNativePopup())
|
|
return;
|
|
|
|
if (aGrabMouseEvents) {
|
|
nsIPresShell::SetCapturingContent(mContent, CAPTURE_IGNOREALLOWED);
|
|
} else {
|
|
nsIContent* capturingContent = nsIPresShell::GetCapturingContent();
|
|
|
|
bool dropDownIsHidden = false;
|
|
if (IsInDropDownMode()) {
|
|
dropDownIsHidden = !mComboboxFrame->IsDroppedDown();
|
|
}
|
|
if (capturingContent == mContent || dropDownIsHidden) {
|
|
// only clear the capturing content if *we* are the ones doing the
|
|
// capturing (or if the dropdown is hidden, in which case NO-ONE should
|
|
// be capturing anything - it could be a scrollbar inside this listbox
|
|
// which is actually grabbing
|
|
// This shouldn't be necessary. We should simply ensure that events targeting
|
|
// scrollbars are never visible to DOM consumers.
|
|
nsIPresShell::SetCapturingContent(nsnull, 0);
|
|
}
|
|
}
|
|
}
|
|
|
|
//---------------------------------------------------------
|
|
NS_IMETHODIMP
|
|
nsListControlFrame::HandleEvent(nsPresContext* aPresContext,
|
|
nsGUIEvent* aEvent,
|
|
nsEventStatus* aEventStatus)
|
|
{
|
|
NS_ENSURE_ARG_POINTER(aEventStatus);
|
|
|
|
/*const char * desc[] = {"NS_MOUSE_MOVE",
|
|
"NS_MOUSE_LEFT_BUTTON_UP",
|
|
"NS_MOUSE_LEFT_BUTTON_DOWN",
|
|
"<NA>","<NA>","<NA>","<NA>","<NA>","<NA>","<NA>",
|
|
"NS_MOUSE_MIDDLE_BUTTON_UP",
|
|
"NS_MOUSE_MIDDLE_BUTTON_DOWN",
|
|
"<NA>","<NA>","<NA>","<NA>","<NA>","<NA>","<NA>","<NA>",
|
|
"NS_MOUSE_RIGHT_BUTTON_UP",
|
|
"NS_MOUSE_RIGHT_BUTTON_DOWN",
|
|
"NS_MOUSE_ENTER_SYNTH",
|
|
"NS_MOUSE_EXIT_SYNTH",
|
|
"NS_MOUSE_LEFT_DOUBLECLICK",
|
|
"NS_MOUSE_MIDDLE_DOUBLECLICK",
|
|
"NS_MOUSE_RIGHT_DOUBLECLICK",
|
|
"NS_MOUSE_LEFT_CLICK",
|
|
"NS_MOUSE_MIDDLE_CLICK",
|
|
"NS_MOUSE_RIGHT_CLICK"};
|
|
int inx = aEvent->message-NS_MOUSE_MESSAGE_START;
|
|
if (inx >= 0 && inx <= (NS_MOUSE_RIGHT_CLICK-NS_MOUSE_MESSAGE_START)) {
|
|
printf("Mouse in ListFrame %s [%d]\n", desc[inx], aEvent->message);
|
|
} else {
|
|
printf("Mouse in ListFrame <UNKNOWN> [%d]\n", aEvent->message);
|
|
}*/
|
|
|
|
if (nsEventStatus_eConsumeNoDefault == *aEventStatus)
|
|
return NS_OK;
|
|
|
|
// do we have style that affects how we are selected?
|
|
// do we have user-input style?
|
|
const nsStyleUserInterface* uiStyle = GetStyleUserInterface();
|
|
if (uiStyle->mUserInput == NS_STYLE_USER_INPUT_NONE || uiStyle->mUserInput == NS_STYLE_USER_INPUT_DISABLED)
|
|
return nsFrame::HandleEvent(aPresContext, aEvent, aEventStatus);
|
|
|
|
nsEventStates eventStates = mContent->AsElement()->State();
|
|
if (eventStates.HasState(NS_EVENT_STATE_DISABLED))
|
|
return NS_OK;
|
|
|
|
return nsHTMLScrollFrame::HandleEvent(aPresContext, aEvent, aEventStatus);
|
|
}
|
|
|
|
|
|
//---------------------------------------------------------
|
|
NS_IMETHODIMP
|
|
nsListControlFrame::SetInitialChildList(ChildListID aListID,
|
|
nsFrameList& aChildList)
|
|
{
|
|
// First check to see if all the content has been added
|
|
mIsAllContentHere = mContent->IsDoneAddingChildren();
|
|
if (!mIsAllContentHere) {
|
|
mIsAllFramesHere = false;
|
|
mHasBeenInitialized = false;
|
|
}
|
|
nsresult rv = nsHTMLScrollFrame::SetInitialChildList(aListID, aChildList);
|
|
|
|
// If all the content is here now check
|
|
// to see if all the frames have been created
|
|
/*if (mIsAllContentHere) {
|
|
// If all content and frames are here
|
|
// the reset/initialize
|
|
if (CheckIfAllFramesHere()) {
|
|
ResetList(aPresContext);
|
|
mHasBeenInitialized = true;
|
|
}
|
|
}*/
|
|
|
|
return rv;
|
|
}
|
|
|
|
//---------------------------------------------------------
|
|
nsresult
|
|
nsListControlFrame::GetSizeAttribute(PRInt32 *aSize) {
|
|
nsresult rv = NS_OK;
|
|
nsIDOMHTMLSelectElement* selectElement;
|
|
rv = mContent->QueryInterface(NS_GET_IID(nsIDOMHTMLSelectElement),(void**) &selectElement);
|
|
if (mContent && NS_SUCCEEDED(rv)) {
|
|
rv = selectElement->GetSize(aSize);
|
|
NS_RELEASE(selectElement);
|
|
}
|
|
return rv;
|
|
}
|
|
|
|
|
|
//---------------------------------------------------------
|
|
NS_IMETHODIMP
|
|
nsListControlFrame::Init(nsIContent* aContent,
|
|
nsIFrame* aParent,
|
|
nsIFrame* aPrevInFlow)
|
|
{
|
|
nsresult result = nsHTMLScrollFrame::Init(aContent, aParent, aPrevInFlow);
|
|
|
|
// get the receiver interface from the browser button's content node
|
|
NS_ENSURE_STATE(mContent);
|
|
|
|
// we shouldn't have to unregister this listener because when
|
|
// our frame goes away all these content node go away as well
|
|
// because our frame is the only one who references them.
|
|
// we need to hook up our listeners before the editor is initialized
|
|
mEventListener = new nsListEventListener(this);
|
|
if (!mEventListener)
|
|
return NS_ERROR_OUT_OF_MEMORY;
|
|
|
|
mContent->AddEventListener(NS_LITERAL_STRING("keypress"), mEventListener,
|
|
false, false);
|
|
mContent->AddEventListener(NS_LITERAL_STRING("mousedown"), mEventListener,
|
|
false, false);
|
|
mContent->AddEventListener(NS_LITERAL_STRING("mouseup"), mEventListener,
|
|
false, false);
|
|
mContent->AddEventListener(NS_LITERAL_STRING("mousemove"), mEventListener,
|
|
false, false);
|
|
|
|
mStartSelectionIndex = kNothingSelected;
|
|
mEndSelectionIndex = kNothingSelected;
|
|
|
|
mLastDropdownBackstopColor = PresContext()->DefaultBackgroundColor();
|
|
|
|
return result;
|
|
}
|
|
|
|
already_AddRefed<nsIContent>
|
|
nsListControlFrame::GetOptionAsContent(nsIDOMHTMLOptionsCollection* aCollection, PRInt32 aIndex)
|
|
{
|
|
nsIContent * content = nsnull;
|
|
nsCOMPtr<nsIDOMHTMLOptionElement> optionElement = GetOption(aCollection,
|
|
aIndex);
|
|
|
|
NS_ASSERTION(optionElement != nsnull, "could not get option element by index!");
|
|
|
|
if (optionElement) {
|
|
CallQueryInterface(optionElement, &content);
|
|
}
|
|
|
|
return content;
|
|
}
|
|
|
|
already_AddRefed<nsIContent>
|
|
nsListControlFrame::GetOptionContent(PRInt32 aIndex) const
|
|
|
|
{
|
|
nsCOMPtr<nsIDOMHTMLOptionsCollection> options = GetOptions(mContent);
|
|
NS_ASSERTION(options.get() != nsnull, "Collection of options is null!");
|
|
|
|
if (options) {
|
|
return GetOptionAsContent(options, aIndex);
|
|
}
|
|
return nsnull;
|
|
}
|
|
|
|
already_AddRefed<nsIDOMHTMLOptionsCollection>
|
|
nsListControlFrame::GetOptions(nsIContent * aContent)
|
|
{
|
|
nsIDOMHTMLOptionsCollection* options = nsnull;
|
|
nsCOMPtr<nsIDOMHTMLSelectElement> selectElement = do_QueryInterface(aContent);
|
|
if (selectElement) {
|
|
selectElement->GetOptions(&options); // AddRefs (1)
|
|
}
|
|
|
|
return options;
|
|
}
|
|
|
|
already_AddRefed<nsIDOMHTMLOptionElement>
|
|
nsListControlFrame::GetOption(nsIDOMHTMLOptionsCollection* aCollection,
|
|
PRInt32 aIndex)
|
|
{
|
|
nsCOMPtr<nsIDOMNode> node;
|
|
if (NS_SUCCEEDED(aCollection->Item(aIndex, getter_AddRefs(node)))) {
|
|
NS_ASSERTION(node,
|
|
"Item was successful, but node from collection was null!");
|
|
if (node) {
|
|
nsIDOMHTMLOptionElement* option = nsnull;
|
|
CallQueryInterface(node, &option);
|
|
|
|
return option;
|
|
}
|
|
} else {
|
|
NS_ERROR("Couldn't get option by index from collection!");
|
|
}
|
|
return nsnull;
|
|
}
|
|
|
|
bool
|
|
nsListControlFrame::IsContentSelected(nsIContent* aContent) const
|
|
{
|
|
bool isSelected = false;
|
|
|
|
nsCOMPtr<nsIDOMHTMLOptionElement> optEl = do_QueryInterface(aContent);
|
|
if (optEl)
|
|
optEl->GetSelected(&isSelected);
|
|
|
|
return isSelected;
|
|
}
|
|
|
|
bool
|
|
nsListControlFrame::IsContentSelectedByIndex(PRInt32 aIndex) const
|
|
{
|
|
nsCOMPtr<nsIContent> content = GetOptionContent(aIndex);
|
|
NS_ASSERTION(content, "Failed to retrieve option content");
|
|
|
|
return IsContentSelected(content);
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsListControlFrame::OnOptionSelected(PRInt32 aIndex, bool aSelected)
|
|
{
|
|
if (aSelected) {
|
|
ScrollToIndex(aIndex);
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
PRIntn
|
|
nsListControlFrame::GetSkipSides() const
|
|
{
|
|
// Don't skip any sides during border rendering
|
|
return 0;
|
|
}
|
|
|
|
void
|
|
nsListControlFrame::OnContentReset()
|
|
{
|
|
ResetList(true);
|
|
}
|
|
|
|
void
|
|
nsListControlFrame::ResetList(bool aAllowScrolling,
|
|
const nsHTMLReflowState *aReflowState)
|
|
{
|
|
// if all the frames aren't here
|
|
// don't bother reseting
|
|
if (!mIsAllFramesHere) {
|
|
return;
|
|
}
|
|
|
|
if (aAllowScrolling) {
|
|
mPostChildrenLoadedReset = true;
|
|
|
|
// Scroll to the selected index
|
|
PRInt32 indexToSelect = kNothingSelected;
|
|
|
|
nsCOMPtr<nsIDOMHTMLSelectElement> selectElement(do_QueryInterface(mContent));
|
|
NS_ASSERTION(selectElement, "No select element!");
|
|
if (selectElement) {
|
|
selectElement->GetSelectedIndex(&indexToSelect);
|
|
ScrollToIndex(indexToSelect);
|
|
}
|
|
}
|
|
|
|
mStartSelectionIndex = kNothingSelected;
|
|
mEndSelectionIndex = kNothingSelected;
|
|
InvalidateFocus(aReflowState);
|
|
// Combobox will redisplay itself with the OnOptionSelected event
|
|
}
|
|
|
|
void
|
|
nsListControlFrame::SetFocus(bool aOn, bool aRepaint)
|
|
{
|
|
InvalidateFocus();
|
|
|
|
if (aOn) {
|
|
ComboboxFocusSet();
|
|
mFocused = this;
|
|
} else {
|
|
mFocused = nsnull;
|
|
}
|
|
|
|
InvalidateFocus();
|
|
}
|
|
|
|
void nsListControlFrame::ComboboxFocusSet()
|
|
{
|
|
gLastKeyTime = 0;
|
|
}
|
|
|
|
void
|
|
nsListControlFrame::SetComboboxFrame(nsIFrame* aComboboxFrame)
|
|
{
|
|
if (nsnull != aComboboxFrame) {
|
|
mComboboxFrame = do_QueryFrame(aComboboxFrame);
|
|
}
|
|
}
|
|
|
|
void
|
|
nsListControlFrame::GetOptionText(PRInt32 aIndex, nsAString & aStr)
|
|
{
|
|
aStr.SetLength(0);
|
|
nsCOMPtr<nsIDOMHTMLOptionsCollection> options = GetOptions(mContent);
|
|
|
|
if (options) {
|
|
PRUint32 numOptions;
|
|
options->GetLength(&numOptions);
|
|
|
|
if (numOptions != 0) {
|
|
nsCOMPtr<nsIDOMHTMLOptionElement> optionElement =
|
|
GetOption(options, aIndex);
|
|
if (optionElement) {
|
|
#if 0 // This is for turning off labels Bug 4050
|
|
nsAutoString text;
|
|
optionElement->GetLabel(text);
|
|
// the return value is always NS_OK from DOMElements
|
|
// it is meaningless to check for it
|
|
if (!text.IsEmpty()) {
|
|
nsAutoString compressText = text;
|
|
compressText.CompressWhitespace(true, true);
|
|
if (!compressText.IsEmpty()) {
|
|
text = compressText;
|
|
}
|
|
}
|
|
|
|
if (text.IsEmpty()) {
|
|
// the return value is always NS_OK from DOMElements
|
|
// it is meaningless to check for it
|
|
optionElement->GetText(text);
|
|
}
|
|
aStr = text;
|
|
#else
|
|
optionElement->GetText(aStr);
|
|
#endif
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
PRInt32
|
|
nsListControlFrame::GetSelectedIndex()
|
|
{
|
|
PRInt32 aIndex;
|
|
|
|
nsCOMPtr<nsIDOMHTMLSelectElement> selectElement(do_QueryInterface(mContent));
|
|
selectElement->GetSelectedIndex(&aIndex);
|
|
|
|
return aIndex;
|
|
}
|
|
|
|
already_AddRefed<nsIContent>
|
|
nsListControlFrame::GetCurrentOption()
|
|
{
|
|
// The mEndSelectionIndex is what is currently being selected. Use
|
|
// the selected index if this is kNothingSelected.
|
|
PRInt32 focusedIndex = (mEndSelectionIndex == kNothingSelected) ?
|
|
GetSelectedIndex() : mEndSelectionIndex;
|
|
|
|
if (focusedIndex != kNothingSelected) {
|
|
return GetOptionContent(focusedIndex);
|
|
}
|
|
|
|
nsRefPtr<nsHTMLSelectElement> selectElement =
|
|
nsHTMLSelectElement::FromContent(mContent);
|
|
NS_ASSERTION(selectElement, "Can't be null");
|
|
|
|
// There is no a selected item return the first non-disabled item and skip all
|
|
// the option group elements.
|
|
nsCOMPtr<nsIDOMNode> node;
|
|
|
|
PRUint32 length;
|
|
selectElement->GetLength(&length);
|
|
if (length) {
|
|
bool isDisabled = true;
|
|
for (PRUint32 i = 0; i < length && isDisabled; i++) {
|
|
if (NS_FAILED(selectElement->Item(i, getter_AddRefs(node))) || !node) {
|
|
break;
|
|
}
|
|
if (NS_FAILED(selectElement->IsOptionDisabled(i, &isDisabled))) {
|
|
break;
|
|
}
|
|
if (isDisabled) {
|
|
node = nsnull;
|
|
} else {
|
|
break;
|
|
}
|
|
}
|
|
if (!node) {
|
|
return nsnull;
|
|
}
|
|
}
|
|
|
|
if (node) {
|
|
nsCOMPtr<nsIContent> focusedOption = do_QueryInterface(node);
|
|
return focusedOption.forget();
|
|
}
|
|
return nsnull;
|
|
}
|
|
|
|
bool
|
|
nsListControlFrame::IsInDropDownMode() const
|
|
{
|
|
return (mComboboxFrame != nsnull);
|
|
}
|
|
|
|
PRInt32
|
|
nsListControlFrame::GetNumberOfOptions()
|
|
{
|
|
if (mContent != nsnull) {
|
|
nsCOMPtr<nsIDOMHTMLOptionsCollection> options = GetOptions(mContent);
|
|
|
|
if (!options) {
|
|
return 0;
|
|
} else {
|
|
PRUint32 length = 0;
|
|
options->GetLength(&length);
|
|
return (PRInt32)length;
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
//----------------------------------------------------------------------
|
|
// nsISelectControlFrame
|
|
//----------------------------------------------------------------------
|
|
bool nsListControlFrame::CheckIfAllFramesHere()
|
|
{
|
|
// Get the number of optgroups and options
|
|
//PRInt32 numContentItems = 0;
|
|
nsCOMPtr<nsIDOMNode> node(do_QueryInterface(mContent));
|
|
if (node) {
|
|
// XXX Need to find a fail proff way to determine that
|
|
// all the frames are there
|
|
mIsAllFramesHere = true;//NS_OK == CountAllChild(node, numContentItems);
|
|
}
|
|
// now make sure we have a frame each piece of content
|
|
|
|
return mIsAllFramesHere;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsListControlFrame::DoneAddingChildren(bool aIsDone)
|
|
{
|
|
mIsAllContentHere = aIsDone;
|
|
if (mIsAllContentHere) {
|
|
// Here we check to see if all the frames have been created
|
|
// for all the content.
|
|
// If so, then we can initialize;
|
|
if (!mIsAllFramesHere) {
|
|
// if all the frames are now present we can initialize
|
|
if (CheckIfAllFramesHere()) {
|
|
mHasBeenInitialized = true;
|
|
ResetList(true);
|
|
}
|
|
}
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsListControlFrame::AddOption(PRInt32 aIndex)
|
|
{
|
|
#ifdef DO_REFLOW_DEBUG
|
|
printf("---- Id: %d nsLCF %p Added Option %d\n", mReflowId, this, aIndex);
|
|
#endif
|
|
|
|
if (!mIsAllContentHere) {
|
|
mIsAllContentHere = mContent->IsDoneAddingChildren();
|
|
if (!mIsAllContentHere) {
|
|
mIsAllFramesHere = false;
|
|
mHasBeenInitialized = false;
|
|
} else {
|
|
mIsAllFramesHere = (aIndex == GetNumberOfOptions()-1);
|
|
}
|
|
}
|
|
|
|
// Make sure we scroll to the selected option as needed
|
|
mNeedToReset = true;
|
|
|
|
if (!mHasBeenInitialized) {
|
|
return NS_OK;
|
|
}
|
|
|
|
mPostChildrenLoadedReset = mIsAllContentHere;
|
|
return NS_OK;
|
|
}
|
|
|
|
static PRInt32
|
|
DecrementAndClamp(PRInt32 aSelectionIndex, PRInt32 aLength)
|
|
{
|
|
return aLength == 0 ? kNothingSelected : NS_MAX(0, aSelectionIndex - 1);
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsListControlFrame::RemoveOption(PRInt32 aIndex)
|
|
{
|
|
NS_PRECONDITION(aIndex >= 0, "negative <option> index");
|
|
|
|
// Need to reset if we're a dropdown
|
|
if (IsInDropDownMode()) {
|
|
mNeedToReset = true;
|
|
mPostChildrenLoadedReset = mIsAllContentHere;
|
|
}
|
|
|
|
if (mStartSelectionIndex != kNothingSelected) {
|
|
NS_ASSERTION(mEndSelectionIndex != kNothingSelected, "");
|
|
PRInt32 numOptions = GetNumberOfOptions();
|
|
// NOTE: numOptions is the new number of options whereas aIndex is the
|
|
// unadjusted index of the removed option (hence the <= below).
|
|
NS_ASSERTION(aIndex <= numOptions, "out-of-bounds <option> index");
|
|
|
|
PRInt32 forward = mEndSelectionIndex - mStartSelectionIndex;
|
|
PRInt32* low = forward >= 0 ? &mStartSelectionIndex : &mEndSelectionIndex;
|
|
PRInt32* high = forward >= 0 ? &mEndSelectionIndex : &mStartSelectionIndex;
|
|
if (aIndex < *low)
|
|
*low = ::DecrementAndClamp(*low, numOptions);
|
|
if (aIndex <= *high)
|
|
*high = ::DecrementAndClamp(*high, numOptions);
|
|
if (forward == 0)
|
|
*low = *high;
|
|
}
|
|
else
|
|
NS_ASSERTION(mEndSelectionIndex == kNothingSelected, "");
|
|
|
|
InvalidateFocus();
|
|
return NS_OK;
|
|
}
|
|
|
|
//---------------------------------------------------------
|
|
// Set the option selected in the DOM. This method is named
|
|
// as it is because it indicates that the frame is the source
|
|
// of this event rather than the receiver.
|
|
bool
|
|
nsListControlFrame::SetOptionsSelectedFromFrame(PRInt32 aStartIndex,
|
|
PRInt32 aEndIndex,
|
|
bool aValue,
|
|
bool aClearAll)
|
|
{
|
|
nsRefPtr<nsHTMLSelectElement> selectElement =
|
|
nsHTMLSelectElement::FromContent(mContent);
|
|
bool wasChanged = false;
|
|
#ifdef DEBUG
|
|
nsresult rv =
|
|
#endif
|
|
selectElement->SetOptionsSelectedByIndex(aStartIndex,
|
|
aEndIndex,
|
|
aValue,
|
|
aClearAll,
|
|
false,
|
|
true,
|
|
&wasChanged);
|
|
NS_ASSERTION(NS_SUCCEEDED(rv), "SetSelected failed");
|
|
return wasChanged;
|
|
}
|
|
|
|
bool
|
|
nsListControlFrame::ToggleOptionSelectedFromFrame(PRInt32 aIndex)
|
|
{
|
|
nsCOMPtr<nsIDOMHTMLOptionsCollection> options = GetOptions(mContent);
|
|
NS_ASSERTION(options, "No options");
|
|
if (!options) {
|
|
return false;
|
|
}
|
|
nsCOMPtr<nsIDOMHTMLOptionElement> option = GetOption(options, aIndex);
|
|
NS_ASSERTION(option, "No option");
|
|
if (!option) {
|
|
return false;
|
|
}
|
|
|
|
bool value = false;
|
|
#ifdef DEBUG
|
|
nsresult rv =
|
|
#endif
|
|
option->GetSelected(&value);
|
|
|
|
NS_ASSERTION(NS_SUCCEEDED(rv), "GetSelected failed");
|
|
nsRefPtr<nsHTMLSelectElement> selectElement =
|
|
nsHTMLSelectElement::FromContent(mContent);
|
|
bool wasChanged = false;
|
|
#ifdef DEBUG
|
|
rv =
|
|
#endif
|
|
selectElement->SetOptionsSelectedByIndex(aIndex,
|
|
aIndex,
|
|
!value,
|
|
false,
|
|
false,
|
|
true,
|
|
&wasChanged);
|
|
|
|
NS_ASSERTION(NS_SUCCEEDED(rv), "SetSelected failed");
|
|
|
|
return wasChanged;
|
|
}
|
|
|
|
|
|
// Dispatch event and such
|
|
bool
|
|
nsListControlFrame::UpdateSelection()
|
|
{
|
|
if (mIsAllFramesHere) {
|
|
// if it's a combobox, display the new text
|
|
nsWeakFrame weakFrame(this);
|
|
if (mComboboxFrame) {
|
|
mComboboxFrame->RedisplaySelectedText();
|
|
}
|
|
// if it's a listbox, fire on change
|
|
else if (mIsAllContentHere) {
|
|
FireOnChange();
|
|
}
|
|
return weakFrame.IsAlive();
|
|
}
|
|
return true;
|
|
}
|
|
|
|
void
|
|
nsListControlFrame::ComboboxFinish(PRInt32 aIndex)
|
|
{
|
|
gLastKeyTime = 0;
|
|
|
|
if (mComboboxFrame) {
|
|
PerformSelection(aIndex, false, false);
|
|
|
|
PRInt32 displayIndex = mComboboxFrame->GetIndexOfDisplayArea();
|
|
|
|
nsWeakFrame weakFrame(this);
|
|
|
|
if (displayIndex != aIndex) {
|
|
mComboboxFrame->RedisplaySelectedText(); // might destroy us
|
|
}
|
|
|
|
if (weakFrame.IsAlive() && mComboboxFrame) {
|
|
mComboboxFrame->RollupFromList(); // might destroy us
|
|
}
|
|
}
|
|
}
|
|
|
|
// Send out an onchange notification.
|
|
void
|
|
nsListControlFrame::FireOnChange()
|
|
{
|
|
if (mComboboxFrame) {
|
|
// Return hit without changing anything
|
|
PRInt32 index = mComboboxFrame->UpdateRecentIndex(NS_SKIP_NOTIFY_INDEX);
|
|
if (index == NS_SKIP_NOTIFY_INDEX)
|
|
return;
|
|
|
|
// See if the selection actually changed
|
|
if (index == GetSelectedIndex())
|
|
return;
|
|
}
|
|
|
|
// Dispatch the change event.
|
|
nsContentUtils::DispatchTrustedEvent(mContent->OwnerDoc(), mContent,
|
|
NS_LITERAL_STRING("change"), true,
|
|
false);
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsListControlFrame::OnSetSelectedIndex(PRInt32 aOldIndex, PRInt32 aNewIndex)
|
|
{
|
|
if (mComboboxFrame) {
|
|
// UpdateRecentIndex with NS_SKIP_NOTIFY_INDEX, so that we won't fire an onchange
|
|
// event for this setting of selectedIndex.
|
|
mComboboxFrame->UpdateRecentIndex(NS_SKIP_NOTIFY_INDEX);
|
|
}
|
|
|
|
ScrollToIndex(aNewIndex);
|
|
mStartSelectionIndex = aNewIndex;
|
|
mEndSelectionIndex = aNewIndex;
|
|
InvalidateFocus();
|
|
|
|
#ifdef ACCESSIBILITY
|
|
FireMenuItemActiveEvent();
|
|
#endif
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
//----------------------------------------------------------------------
|
|
// End nsISelectControlFrame
|
|
//----------------------------------------------------------------------
|
|
|
|
nsresult
|
|
nsListControlFrame::SetFormProperty(nsIAtom* aName,
|
|
const nsAString& aValue)
|
|
{
|
|
if (nsGkAtoms::selected == aName) {
|
|
return NS_ERROR_INVALID_ARG; // Selected is readonly according to spec.
|
|
} else if (nsGkAtoms::selectedindex == aName) {
|
|
// You shouldn't be calling me for this!!!
|
|
return NS_ERROR_INVALID_ARG;
|
|
}
|
|
|
|
// We should be told about selectedIndex by the DOM element through
|
|
// OnOptionSelected
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult
|
|
nsListControlFrame::GetFormProperty(nsIAtom* aName, nsAString& aValue) const
|
|
{
|
|
// Get the selected value of option from local cache (optimization vs. widget)
|
|
if (nsGkAtoms::selected == aName) {
|
|
nsAutoString val(aValue);
|
|
PRInt32 error = 0;
|
|
bool selected = false;
|
|
PRInt32 indx = val.ToInteger(&error, 10); // Get index from aValue
|
|
if (error == 0)
|
|
selected = IsContentSelectedByIndex(indx);
|
|
|
|
aValue.Assign(selected ? NS_LITERAL_STRING("1") : NS_LITERAL_STRING("0"));
|
|
|
|
// For selectedIndex, get the value from the widget
|
|
} else if (nsGkAtoms::selectedindex == aName) {
|
|
// You shouldn't be calling me for this!!!
|
|
return NS_ERROR_INVALID_ARG;
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
void
|
|
nsListControlFrame::SyncViewWithFrame()
|
|
{
|
|
// Resync the view's position with the frame.
|
|
// The problem is the dropdown's view is attached directly under
|
|
// the root view. This means its view needs to have its coordinates calculated
|
|
// as if it were in it's normal position in the view hierarchy.
|
|
mComboboxFrame->AbsolutelyPositionDropDown();
|
|
|
|
nsContainerFrame::PositionFrameView(this);
|
|
}
|
|
|
|
void
|
|
nsListControlFrame::AboutToDropDown()
|
|
{
|
|
NS_ASSERTION(IsInDropDownMode(),
|
|
"AboutToDropDown called without being in dropdown mode");
|
|
|
|
// Our widget doesn't get invalidated on changes to the rest of the document,
|
|
// so compute and store this color at the start of a dropdown so we don't
|
|
// get weird painting behaviour.
|
|
// We start looking for backgrounds above the combobox frame to avoid
|
|
// duplicating the combobox frame's background and compose each background
|
|
// color we find underneath until we have an opaque color, or run out of
|
|
// backgrounds. We compose with the PresContext default background color,
|
|
// which is always opaque, in case we don't end up with an opaque color.
|
|
// This gives us a very poor approximation of translucency.
|
|
nsIFrame* comboboxFrame = do_QueryFrame(mComboboxFrame);
|
|
nsStyleContext* context = comboboxFrame->GetStyleContext()->GetParent();
|
|
mLastDropdownBackstopColor = NS_RGBA(0,0,0,0);
|
|
while (NS_GET_A(mLastDropdownBackstopColor) < 255 && context) {
|
|
mLastDropdownBackstopColor =
|
|
NS_ComposeColors(context->GetStyleBackground()->mBackgroundColor,
|
|
mLastDropdownBackstopColor);
|
|
context = context->GetParent();
|
|
}
|
|
mLastDropdownBackstopColor =
|
|
NS_ComposeColors(PresContext()->DefaultBackgroundColor(),
|
|
mLastDropdownBackstopColor);
|
|
|
|
if (mIsAllContentHere && mIsAllFramesHere && mHasBeenInitialized) {
|
|
ScrollToIndex(GetSelectedIndex());
|
|
#ifdef ACCESSIBILITY
|
|
FireMenuItemActiveEvent(); // Inform assistive tech what got focus
|
|
#endif
|
|
}
|
|
mItemSelectionStarted = false;
|
|
}
|
|
|
|
// We are about to be rolledup from the outside (ComboboxFrame)
|
|
void
|
|
nsListControlFrame::AboutToRollup()
|
|
{
|
|
// We've been updating the combobox with the keyboard up until now, but not
|
|
// with the mouse. The problem is, even with mouse selection, we are
|
|
// updating the <select>. So if the mouse goes over an option just before
|
|
// he leaves the box and clicks, that's what the <select> will show.
|
|
//
|
|
// To deal with this we say "whatever is in the combobox is canonical."
|
|
// - IF the combobox is different from the current selected index, we
|
|
// reset the index.
|
|
|
|
if (IsInDropDownMode()) {
|
|
ComboboxFinish(mComboboxFrame->GetIndexOfDisplayArea()); // might destroy us
|
|
}
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsListControlFrame::DidReflow(nsPresContext* aPresContext,
|
|
const nsHTMLReflowState* aReflowState,
|
|
nsDidReflowStatus aStatus)
|
|
{
|
|
nsresult rv;
|
|
bool wasInterrupted = !mHasPendingInterruptAtStartOfReflow &&
|
|
aPresContext->HasPendingInterrupt();
|
|
|
|
if (IsInDropDownMode())
|
|
{
|
|
//SyncViewWithFrame();
|
|
rv = nsHTMLScrollFrame::DidReflow(aPresContext, aReflowState, aStatus);
|
|
SyncViewWithFrame();
|
|
} else {
|
|
rv = nsHTMLScrollFrame::DidReflow(aPresContext, aReflowState, aStatus);
|
|
}
|
|
|
|
if (mNeedToReset && !wasInterrupted) {
|
|
mNeedToReset = false;
|
|
// Suppress scrolling to the selected element if we restored
|
|
// scroll history state AND the list contents have not changed
|
|
// since we loaded all the children AND nothing else forced us
|
|
// to scroll by calling ResetList(true). The latter two conditions
|
|
// are folded into mPostChildrenLoadedReset.
|
|
//
|
|
// The idea is that we want scroll history restoration to trump ResetList
|
|
// scrolling to the selected element, when the ResetList was probably only
|
|
// caused by content loading normally.
|
|
ResetList(!DidHistoryRestore() || mPostChildrenLoadedReset, aReflowState);
|
|
}
|
|
|
|
mHasPendingInterruptAtStartOfReflow = false;
|
|
return rv;
|
|
}
|
|
|
|
nsIAtom*
|
|
nsListControlFrame::GetType() const
|
|
{
|
|
return nsGkAtoms::listControlFrame;
|
|
}
|
|
|
|
void
|
|
nsListControlFrame::InvalidateInternal(const nsRect& aDamageRect,
|
|
nscoord aX, nscoord aY, nsIFrame* aForChild,
|
|
PRUint32 aFlags)
|
|
{
|
|
if (!IsInDropDownMode()) {
|
|
nsHTMLScrollFrame::InvalidateInternal(aDamageRect, aX, aY, this, aFlags);
|
|
return;
|
|
}
|
|
InvalidateRoot(aDamageRect + nsPoint(aX, aY), aFlags);
|
|
}
|
|
|
|
#ifdef DEBUG
|
|
NS_IMETHODIMP
|
|
nsListControlFrame::GetFrameName(nsAString& aResult) const
|
|
{
|
|
return MakeFrameName(NS_LITERAL_STRING("ListControl"), aResult);
|
|
}
|
|
#endif
|
|
|
|
nscoord
|
|
nsListControlFrame::GetHeightOfARow()
|
|
{
|
|
return HeightOfARow();
|
|
}
|
|
|
|
nsresult
|
|
nsListControlFrame::IsOptionDisabled(PRInt32 anIndex, bool &aIsDisabled)
|
|
{
|
|
nsRefPtr<nsHTMLSelectElement> sel =
|
|
nsHTMLSelectElement::FromContent(mContent);
|
|
if (sel) {
|
|
sel->IsOptionDisabled(anIndex, &aIsDisabled);
|
|
return NS_OK;
|
|
}
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
//----------------------------------------------------------------------
|
|
// helper
|
|
//----------------------------------------------------------------------
|
|
bool
|
|
nsListControlFrame::IsLeftButton(nsIDOMEvent* aMouseEvent)
|
|
{
|
|
// only allow selection with the left button
|
|
nsCOMPtr<nsIDOMMouseEvent> mouseEvent = do_QueryInterface(aMouseEvent);
|
|
if (mouseEvent) {
|
|
PRUint16 whichButton;
|
|
if (NS_SUCCEEDED(mouseEvent->GetButton(&whichButton))) {
|
|
return whichButton != 0?false:true;
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
nscoord
|
|
nsListControlFrame::CalcFallbackRowHeight(float aFontSizeInflation)
|
|
{
|
|
nscoord rowHeight = 0;
|
|
|
|
nsRefPtr<nsFontMetrics> fontMet;
|
|
nsLayoutUtils::GetFontMetricsForFrame(this, getter_AddRefs(fontMet),
|
|
aFontSizeInflation);
|
|
if (fontMet) {
|
|
rowHeight = fontMet->MaxHeight();
|
|
}
|
|
|
|
return rowHeight;
|
|
}
|
|
|
|
nscoord
|
|
nsListControlFrame::CalcIntrinsicHeight(nscoord aHeightOfARow,
|
|
PRInt32 aNumberOfOptions)
|
|
{
|
|
NS_PRECONDITION(!IsInDropDownMode(),
|
|
"Shouldn't be in dropdown mode when we call this");
|
|
|
|
mNumDisplayRows = 1;
|
|
GetSizeAttribute(&mNumDisplayRows);
|
|
|
|
if (mNumDisplayRows < 1) {
|
|
mNumDisplayRows = 4;
|
|
}
|
|
|
|
return mNumDisplayRows * aHeightOfARow;
|
|
}
|
|
|
|
//----------------------------------------------------------------------
|
|
// nsIDOMMouseListener
|
|
//----------------------------------------------------------------------
|
|
nsresult
|
|
nsListControlFrame::MouseUp(nsIDOMEvent* aMouseEvent)
|
|
{
|
|
NS_ASSERTION(aMouseEvent != nsnull, "aMouseEvent is null.");
|
|
|
|
nsCOMPtr<nsIDOMMouseEvent> mouseEvent = do_QueryInterface(aMouseEvent);
|
|
NS_ENSURE_TRUE(mouseEvent, NS_ERROR_FAILURE);
|
|
|
|
UpdateInListState(aMouseEvent);
|
|
|
|
mButtonDown = false;
|
|
|
|
nsEventStates eventStates = mContent->AsElement()->State();
|
|
if (eventStates.HasState(NS_EVENT_STATE_DISABLED)) {
|
|
return NS_OK;
|
|
}
|
|
|
|
// only allow selection with the left button
|
|
// if a right button click is on the combobox itself
|
|
// or on the select when in listbox mode, then let the click through
|
|
if (!IsLeftButton(aMouseEvent)) {
|
|
if (IsInDropDownMode()) {
|
|
if (!IgnoreMouseEventForSelection(aMouseEvent)) {
|
|
aMouseEvent->PreventDefault();
|
|
aMouseEvent->StopPropagation();
|
|
} else {
|
|
CaptureMouseEvents(false);
|
|
return NS_OK;
|
|
}
|
|
CaptureMouseEvents(false);
|
|
return NS_ERROR_FAILURE; // means consume event
|
|
} else {
|
|
CaptureMouseEvents(false);
|
|
return NS_OK;
|
|
}
|
|
}
|
|
|
|
const nsStyleVisibility* vis = GetStyleVisibility();
|
|
|
|
if (!vis->IsVisible()) {
|
|
return NS_OK;
|
|
}
|
|
|
|
if (IsInDropDownMode()) {
|
|
// XXX This is a bit of a hack, but.....
|
|
// But the idea here is to make sure you get an "onclick" event when you mouse
|
|
// down on the select and the drag over an option and let go
|
|
// And then NOT get an "onclick" event when when you click down on the select
|
|
// and then up outside of the select
|
|
// the EventStateManager tracks the content of the mouse down and the mouse up
|
|
// to make sure they are the same, and the onclick is sent in the PostHandleEvent
|
|
// depeneding on whether the clickCount is non-zero.
|
|
// So we cheat here by either setting or unsetting the clcikCount in the native event
|
|
// so the right thing happens for the onclick event
|
|
nsCOMPtr<nsIPrivateDOMEvent> privateEvent(do_QueryInterface(aMouseEvent));
|
|
nsMouseEvent * mouseEvent;
|
|
mouseEvent = (nsMouseEvent *) privateEvent->GetInternalNSEvent();
|
|
|
|
PRInt32 selectedIndex;
|
|
if (NS_SUCCEEDED(GetIndexFromDOMEvent(aMouseEvent, selectedIndex))) {
|
|
// If it's disabled, disallow the click and leave.
|
|
bool isDisabled = false;
|
|
IsOptionDisabled(selectedIndex, isDisabled);
|
|
if (isDisabled) {
|
|
aMouseEvent->PreventDefault();
|
|
aMouseEvent->StopPropagation();
|
|
CaptureMouseEvents(false);
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
if (kNothingSelected != selectedIndex) {
|
|
nsWeakFrame weakFrame(this);
|
|
ComboboxFinish(selectedIndex);
|
|
if (!weakFrame.IsAlive())
|
|
return NS_OK;
|
|
FireOnChange();
|
|
}
|
|
|
|
mouseEvent->clickCount = 1;
|
|
} else {
|
|
// the click was out side of the select or its dropdown
|
|
mouseEvent->clickCount = IgnoreMouseEventForSelection(aMouseEvent) ? 1 : 0;
|
|
}
|
|
} else {
|
|
CaptureMouseEvents(false);
|
|
// Notify
|
|
if (mChangesSinceDragStart) {
|
|
// reset this so that future MouseUps without a prior MouseDown
|
|
// won't fire onchange
|
|
mChangesSinceDragStart = false;
|
|
FireOnChange();
|
|
}
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
void
|
|
nsListControlFrame::UpdateInListState(nsIDOMEvent* aEvent)
|
|
{
|
|
if (!mComboboxFrame || !mComboboxFrame->IsDroppedDown())
|
|
return;
|
|
|
|
nsPoint pt = nsLayoutUtils::GetDOMEventCoordinatesRelativeTo(aEvent, this);
|
|
nsRect borderInnerEdge = GetScrollPortRect();
|
|
if (pt.y >= borderInnerEdge.y && pt.y < borderInnerEdge.YMost()) {
|
|
mItemSelectionStarted = true;
|
|
}
|
|
}
|
|
|
|
bool nsListControlFrame::IgnoreMouseEventForSelection(nsIDOMEvent* aEvent)
|
|
{
|
|
if (!mComboboxFrame)
|
|
return false;
|
|
|
|
// Our DOM listener does get called when the dropdown is not
|
|
// showing, because it listens to events on the SELECT element
|
|
if (!mComboboxFrame->IsDroppedDown())
|
|
return true;
|
|
|
|
return !mItemSelectionStarted;
|
|
}
|
|
|
|
#ifdef ACCESSIBILITY
|
|
void
|
|
nsListControlFrame::FireMenuItemActiveEvent()
|
|
{
|
|
if (mFocused != this && !IsInDropDownMode()) {
|
|
return;
|
|
}
|
|
|
|
nsCOMPtr<nsIContent> optionContent = GetCurrentOption();
|
|
if (!optionContent) {
|
|
return;
|
|
}
|
|
|
|
FireDOMEvent(NS_LITERAL_STRING("DOMMenuItemActive"), optionContent);
|
|
}
|
|
#endif
|
|
|
|
nsresult
|
|
nsListControlFrame::GetIndexFromDOMEvent(nsIDOMEvent* aMouseEvent,
|
|
PRInt32& aCurIndex)
|
|
{
|
|
if (IgnoreMouseEventForSelection(aMouseEvent))
|
|
return NS_ERROR_FAILURE;
|
|
|
|
if (nsIPresShell::GetCapturingContent() != mContent) {
|
|
// If we're not capturing, then ignore movement in the border
|
|
nsPoint pt = nsLayoutUtils::GetDOMEventCoordinatesRelativeTo(aMouseEvent, this);
|
|
nsRect borderInnerEdge = GetScrollPortRect();
|
|
if (!borderInnerEdge.Contains(pt)) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
}
|
|
|
|
nsCOMPtr<nsIContent> content = PresContext()->EventStateManager()->
|
|
GetEventTargetContent(nsnull);
|
|
|
|
nsCOMPtr<nsIContent> optionContent = GetOptionFromContent(content);
|
|
if (optionContent) {
|
|
aCurIndex = GetIndexFromContent(optionContent);
|
|
return NS_OK;
|
|
}
|
|
|
|
PRInt32 numOptions = GetNumberOfOptions();
|
|
if (numOptions < 1)
|
|
return NS_ERROR_FAILURE;
|
|
|
|
nsPoint pt = nsLayoutUtils::GetDOMEventCoordinatesRelativeTo(aMouseEvent, this);
|
|
|
|
// If the event coordinate is above the first option frame, then target the
|
|
// first option frame
|
|
nsCOMPtr<nsIContent> firstOption = GetOptionContent(0);
|
|
NS_ASSERTION(firstOption, "Can't find first option that's supposed to be there");
|
|
nsIFrame* optionFrame = firstOption->GetPrimaryFrame();
|
|
if (optionFrame) {
|
|
nsPoint ptInOptionFrame = pt - optionFrame->GetOffsetTo(this);
|
|
if (ptInOptionFrame.y < 0 && ptInOptionFrame.x >= 0 &&
|
|
ptInOptionFrame.x < optionFrame->GetSize().width) {
|
|
aCurIndex = 0;
|
|
return NS_OK;
|
|
}
|
|
}
|
|
|
|
nsCOMPtr<nsIContent> lastOption = GetOptionContent(numOptions - 1);
|
|
// If the event coordinate is below the last option frame, then target the
|
|
// last option frame
|
|
NS_ASSERTION(lastOption, "Can't find last option that's supposed to be there");
|
|
optionFrame = lastOption->GetPrimaryFrame();
|
|
if (optionFrame) {
|
|
nsPoint ptInOptionFrame = pt - optionFrame->GetOffsetTo(this);
|
|
if (ptInOptionFrame.y >= optionFrame->GetSize().height && ptInOptionFrame.x >= 0 &&
|
|
ptInOptionFrame.x < optionFrame->GetSize().width) {
|
|
aCurIndex = numOptions - 1;
|
|
return NS_OK;
|
|
}
|
|
}
|
|
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
nsresult
|
|
nsListControlFrame::MouseDown(nsIDOMEvent* aMouseEvent)
|
|
{
|
|
NS_ASSERTION(aMouseEvent != nsnull, "aMouseEvent is null.");
|
|
|
|
nsCOMPtr<nsIDOMMouseEvent> mouseEvent = do_QueryInterface(aMouseEvent);
|
|
NS_ENSURE_TRUE(mouseEvent, NS_ERROR_FAILURE);
|
|
|
|
UpdateInListState(aMouseEvent);
|
|
|
|
nsEventStates eventStates = mContent->AsElement()->State();
|
|
if (eventStates.HasState(NS_EVENT_STATE_DISABLED)) {
|
|
return NS_OK;
|
|
}
|
|
|
|
// only allow selection with the left button
|
|
// if a right button click is on the combobox itself
|
|
// or on the select when in listbox mode, then let the click through
|
|
if (!IsLeftButton(aMouseEvent)) {
|
|
if (IsInDropDownMode()) {
|
|
if (!IgnoreMouseEventForSelection(aMouseEvent)) {
|
|
aMouseEvent->PreventDefault();
|
|
aMouseEvent->StopPropagation();
|
|
} else {
|
|
return NS_OK;
|
|
}
|
|
return NS_ERROR_FAILURE; // means consume event
|
|
} else {
|
|
return NS_OK;
|
|
}
|
|
}
|
|
|
|
PRInt32 selectedIndex;
|
|
if (NS_SUCCEEDED(GetIndexFromDOMEvent(aMouseEvent, selectedIndex))) {
|
|
// Handle Like List
|
|
mButtonDown = true;
|
|
CaptureMouseEvents(true);
|
|
mChangesSinceDragStart = HandleListSelection(aMouseEvent, selectedIndex);
|
|
} else {
|
|
// NOTE: the combo box is responsible for dropping it down
|
|
if (mComboboxFrame) {
|
|
if (!IgnoreMouseEventForSelection(aMouseEvent)) {
|
|
return NS_OK;
|
|
}
|
|
|
|
if (!nsComboboxControlFrame::ToolkitHasNativePopup())
|
|
{
|
|
bool isDroppedDown = mComboboxFrame->IsDroppedDown();
|
|
nsIFrame* comboFrame = do_QueryFrame(mComboboxFrame);
|
|
nsWeakFrame weakFrame(comboFrame);
|
|
mComboboxFrame->ShowDropDown(!isDroppedDown);
|
|
if (!weakFrame.IsAlive())
|
|
return NS_OK;
|
|
if (isDroppedDown) {
|
|
CaptureMouseEvents(false);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
//----------------------------------------------------------------------
|
|
// nsIDOMMouseMotionListener
|
|
//----------------------------------------------------------------------
|
|
nsresult
|
|
nsListControlFrame::MouseMove(nsIDOMEvent* aMouseEvent)
|
|
{
|
|
NS_ASSERTION(aMouseEvent, "aMouseEvent is null.");
|
|
nsCOMPtr<nsIDOMMouseEvent> mouseEvent = do_QueryInterface(aMouseEvent);
|
|
NS_ENSURE_TRUE(mouseEvent, NS_ERROR_FAILURE);
|
|
|
|
UpdateInListState(aMouseEvent);
|
|
|
|
if (IsInDropDownMode()) {
|
|
if (mComboboxFrame->IsDroppedDown()) {
|
|
PRInt32 selectedIndex;
|
|
if (NS_SUCCEEDED(GetIndexFromDOMEvent(aMouseEvent, selectedIndex))) {
|
|
PerformSelection(selectedIndex, false, false);
|
|
}
|
|
}
|
|
} else {// XXX - temporary until we get drag events
|
|
if (mButtonDown) {
|
|
return DragMove(aMouseEvent);
|
|
}
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult
|
|
nsListControlFrame::DragMove(nsIDOMEvent* aMouseEvent)
|
|
{
|
|
NS_ASSERTION(aMouseEvent, "aMouseEvent is null.");
|
|
|
|
UpdateInListState(aMouseEvent);
|
|
|
|
if (!IsInDropDownMode()) {
|
|
PRInt32 selectedIndex;
|
|
if (NS_SUCCEEDED(GetIndexFromDOMEvent(aMouseEvent, selectedIndex))) {
|
|
// Don't waste cycles if we already dragged over this item
|
|
if (selectedIndex == mEndSelectionIndex) {
|
|
return NS_OK;
|
|
}
|
|
nsCOMPtr<nsIDOMMouseEvent> mouseEvent = do_QueryInterface(aMouseEvent);
|
|
NS_ASSERTION(mouseEvent, "aMouseEvent is not an nsIDOMMouseEvent!");
|
|
bool isControl;
|
|
#ifdef XP_MACOSX
|
|
mouseEvent->GetMetaKey(&isControl);
|
|
#else
|
|
mouseEvent->GetCtrlKey(&isControl);
|
|
#endif
|
|
// Turn SHIFT on when you are dragging, unless control is on.
|
|
bool wasChanged = PerformSelection(selectedIndex,
|
|
!isControl, isControl);
|
|
mChangesSinceDragStart = mChangesSinceDragStart || wasChanged;
|
|
}
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
//----------------------------------------------------------------------
|
|
// Scroll helpers.
|
|
//----------------------------------------------------------------------
|
|
nsresult
|
|
nsListControlFrame::ScrollToIndex(PRInt32 aIndex)
|
|
{
|
|
if (aIndex < 0) {
|
|
// XXX shouldn't we just do nothing if we're asked to scroll to
|
|
// kNothingSelected?
|
|
return ScrollToFrame(nsnull);
|
|
} else {
|
|
nsCOMPtr<nsIContent> content = GetOptionContent(aIndex);
|
|
if (content) {
|
|
return ScrollToFrame(content);
|
|
}
|
|
}
|
|
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
nsresult
|
|
nsListControlFrame::ScrollToFrame(nsIContent* aOptElement)
|
|
{
|
|
// if null is passed in we scroll to 0,0
|
|
if (nsnull == aOptElement) {
|
|
ScrollTo(nsPoint(0, 0), nsIScrollableFrame::INSTANT);
|
|
return NS_OK;
|
|
}
|
|
|
|
// otherwise we find the content's frame and scroll to it
|
|
nsIFrame *childFrame = aOptElement->GetPrimaryFrame();
|
|
if (childFrame) {
|
|
nsPoint pt = GetScrollPosition();
|
|
// get the scroll port rect relative to the scrolled frame
|
|
nsRect rect = GetScrollPortRect() + pt;
|
|
// get the option's rect relative to the scrolled frame
|
|
nsRect fRect(childFrame->GetOffsetTo(GetScrolledFrame()),
|
|
childFrame->GetSize());
|
|
|
|
// See if the selected frame (fRect) is inside the scrollport
|
|
// area (rect). Check only the vertical dimension. Don't
|
|
// scroll just because there's horizontal overflow.
|
|
if (!(rect.y <= fRect.y && fRect.YMost() <= rect.YMost())) {
|
|
// figure out which direction we are going
|
|
if (fRect.YMost() > rect.YMost()) {
|
|
pt.y = fRect.y - (rect.height - fRect.height);
|
|
} else {
|
|
pt.y = fRect.y;
|
|
}
|
|
ScrollTo(nsPoint(fRect.x, pt.y), nsIScrollableFrame::INSTANT);
|
|
}
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
//---------------------------------------------------------------------
|
|
// Ok, the entire idea of this routine is to move to the next item that
|
|
// is suppose to be selected. If the item is disabled then we search in
|
|
// the same direction looking for the next item to select. If we run off
|
|
// the end of the list then we start at the end of the list and search
|
|
// backwards until we get back to the original item or an enabled option
|
|
//
|
|
// aStartIndex - the index to start searching from
|
|
// aNewIndex - will get set to the new index if it finds one
|
|
// aNumOptions - the total number of options in the list
|
|
// aDoAdjustInc - the initial increment 1-n
|
|
// aDoAdjustIncNext - the increment used to search for the next enabled option
|
|
//
|
|
// the aDoAdjustInc could be a "1" for a single item or
|
|
// any number greater representing a page of items
|
|
//
|
|
void
|
|
nsListControlFrame::AdjustIndexForDisabledOpt(PRInt32 aStartIndex,
|
|
PRInt32 &aNewIndex,
|
|
PRInt32 aNumOptions,
|
|
PRInt32 aDoAdjustInc,
|
|
PRInt32 aDoAdjustIncNext)
|
|
{
|
|
// Cannot select anything if there is nothing to select
|
|
if (aNumOptions == 0) {
|
|
aNewIndex = kNothingSelected;
|
|
return;
|
|
}
|
|
|
|
// means we reached the end of the list and now we are searching backwards
|
|
bool doingReverse = false;
|
|
// lowest index in the search range
|
|
PRInt32 bottom = 0;
|
|
// highest index in the search range
|
|
PRInt32 top = aNumOptions;
|
|
|
|
// Start off keyboard options at selectedIndex if nothing else is defaulted to
|
|
//
|
|
// XXX Perhaps this should happen for mouse too, to start off shift click
|
|
// automatically in multiple ... to do this, we'd need to override
|
|
// OnOptionSelected and set mStartSelectedIndex if nothing is selected. Not
|
|
// sure of the effects, though, so I'm not doing it just yet.
|
|
PRInt32 startIndex = aStartIndex;
|
|
if (startIndex < bottom) {
|
|
startIndex = GetSelectedIndex();
|
|
}
|
|
PRInt32 newIndex = startIndex + aDoAdjustInc;
|
|
|
|
// make sure we start off in the range
|
|
if (newIndex < bottom) {
|
|
newIndex = 0;
|
|
} else if (newIndex >= top) {
|
|
newIndex = aNumOptions-1;
|
|
}
|
|
|
|
while (1) {
|
|
// if the newIndex isn't disabled, we are golden, bail out
|
|
bool isDisabled = true;
|
|
if (NS_SUCCEEDED(IsOptionDisabled(newIndex, isDisabled)) && !isDisabled) {
|
|
break;
|
|
}
|
|
|
|
// it WAS disabled, so sart looking ahead for the next enabled option
|
|
newIndex += aDoAdjustIncNext;
|
|
|
|
// well, if we reach end reverse the search
|
|
if (newIndex < bottom) {
|
|
if (doingReverse) {
|
|
return; // if we are in reverse mode and reach the end bail out
|
|
} else {
|
|
// reset the newIndex to the end of the list we hit
|
|
// reverse the incrementer
|
|
// set the other end of the list to our original starting index
|
|
newIndex = bottom;
|
|
aDoAdjustIncNext = 1;
|
|
doingReverse = true;
|
|
top = startIndex;
|
|
}
|
|
} else if (newIndex >= top) {
|
|
if (doingReverse) {
|
|
return; // if we are in reverse mode and reach the end bail out
|
|
} else {
|
|
// reset the newIndex to the end of the list we hit
|
|
// reverse the incrementer
|
|
// set the other end of the list to our original starting index
|
|
newIndex = top - 1;
|
|
aDoAdjustIncNext = -1;
|
|
doingReverse = true;
|
|
bottom = startIndex;
|
|
}
|
|
}
|
|
}
|
|
|
|
// Looks like we found one
|
|
aNewIndex = newIndex;
|
|
}
|
|
|
|
nsAString&
|
|
nsListControlFrame::GetIncrementalString()
|
|
{
|
|
if (sIncrementalString == nsnull)
|
|
sIncrementalString = new nsString();
|
|
|
|
return *sIncrementalString;
|
|
}
|
|
|
|
void
|
|
nsListControlFrame::Shutdown()
|
|
{
|
|
delete sIncrementalString;
|
|
sIncrementalString = nsnull;
|
|
}
|
|
|
|
void
|
|
nsListControlFrame::DropDownToggleKey(nsIDOMEvent* aKeyEvent)
|
|
{
|
|
// Cocoa widgets do native popups, so don't try to show
|
|
// dropdowns there.
|
|
if (IsInDropDownMode() && !nsComboboxControlFrame::ToolkitHasNativePopup()) {
|
|
aKeyEvent->PreventDefault();
|
|
if (!mComboboxFrame->IsDroppedDown()) {
|
|
mComboboxFrame->ShowDropDown(true);
|
|
} else {
|
|
nsWeakFrame weakFrame(this);
|
|
// mEndSelectionIndex is the last item that got selected.
|
|
ComboboxFinish(mEndSelectionIndex);
|
|
if (weakFrame.IsAlive()) {
|
|
FireOnChange();
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
nsresult
|
|
nsListControlFrame::KeyPress(nsIDOMEvent* aKeyEvent)
|
|
{
|
|
NS_ASSERTION(aKeyEvent, "keyEvent is null.");
|
|
|
|
nsEventStates eventStates = mContent->AsElement()->State();
|
|
if (eventStates.HasState(NS_EVENT_STATE_DISABLED))
|
|
return NS_OK;
|
|
|
|
// Start by making sure we can query for a key event
|
|
nsCOMPtr<nsIDOMKeyEvent> keyEvent = do_QueryInterface(aKeyEvent);
|
|
NS_ENSURE_TRUE(keyEvent, NS_ERROR_FAILURE);
|
|
|
|
PRUint32 keycode = 0;
|
|
PRUint32 charcode = 0;
|
|
keyEvent->GetKeyCode(&keycode);
|
|
keyEvent->GetCharCode(&charcode);
|
|
|
|
bool isAlt = false;
|
|
|
|
keyEvent->GetAltKey(&isAlt);
|
|
if (isAlt) {
|
|
if (keycode == nsIDOMKeyEvent::DOM_VK_UP || keycode == nsIDOMKeyEvent::DOM_VK_DOWN) {
|
|
DropDownToggleKey(aKeyEvent);
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
// Get control / shift modifiers
|
|
bool isControl = false;
|
|
bool isShift = false;
|
|
keyEvent->GetCtrlKey(&isControl);
|
|
if (!isControl) {
|
|
keyEvent->GetMetaKey(&isControl);
|
|
}
|
|
keyEvent->GetShiftKey(&isShift);
|
|
|
|
// now make sure there are options or we are wasting our time
|
|
nsCOMPtr<nsIDOMHTMLOptionsCollection> options = GetOptions(mContent);
|
|
NS_ENSURE_TRUE(options, NS_ERROR_FAILURE);
|
|
|
|
PRUint32 numOptions = 0;
|
|
options->GetLength(&numOptions);
|
|
|
|
// Whether we did an incremental search or another action
|
|
bool didIncrementalSearch = false;
|
|
|
|
// this is the new index to set
|
|
// DOM_VK_RETURN & DOM_VK_ESCAPE will not set this
|
|
PRInt32 newIndex = kNothingSelected;
|
|
|
|
// set up the old and new selected index and process it
|
|
// DOM_VK_RETURN selects the item
|
|
// DOM_VK_ESCAPE cancels the selection
|
|
// default processing checks to see if the pressed the first
|
|
// letter of an item in the list and advances to it
|
|
|
|
if (isControl && (keycode == nsIDOMKeyEvent::DOM_VK_UP ||
|
|
keycode == nsIDOMKeyEvent::DOM_VK_LEFT ||
|
|
keycode == nsIDOMKeyEvent::DOM_VK_DOWN ||
|
|
keycode == nsIDOMKeyEvent::DOM_VK_RIGHT)) {
|
|
// Don't go into multiple select mode unless this list can handle it
|
|
isControl = mControlSelectMode = GetMultiple();
|
|
} else if (charcode != ' ') {
|
|
mControlSelectMode = false;
|
|
}
|
|
switch (keycode) {
|
|
|
|
case nsIDOMKeyEvent::DOM_VK_UP:
|
|
case nsIDOMKeyEvent::DOM_VK_LEFT: {
|
|
AdjustIndexForDisabledOpt(mEndSelectionIndex, newIndex,
|
|
(PRInt32)numOptions,
|
|
-1, -1);
|
|
} break;
|
|
|
|
case nsIDOMKeyEvent::DOM_VK_DOWN:
|
|
case nsIDOMKeyEvent::DOM_VK_RIGHT: {
|
|
AdjustIndexForDisabledOpt(mEndSelectionIndex, newIndex,
|
|
(PRInt32)numOptions,
|
|
1, 1);
|
|
} break;
|
|
|
|
case nsIDOMKeyEvent::DOM_VK_RETURN: {
|
|
if (mComboboxFrame != nsnull) {
|
|
if (mComboboxFrame->IsDroppedDown()) {
|
|
nsWeakFrame weakFrame(this);
|
|
ComboboxFinish(mEndSelectionIndex);
|
|
if (!weakFrame.IsAlive())
|
|
return NS_OK;
|
|
}
|
|
FireOnChange();
|
|
return NS_OK;
|
|
} else {
|
|
newIndex = mEndSelectionIndex;
|
|
}
|
|
} break;
|
|
|
|
case nsIDOMKeyEvent::DOM_VK_ESCAPE: {
|
|
nsWeakFrame weakFrame(this);
|
|
AboutToRollup();
|
|
if (!weakFrame.IsAlive()) {
|
|
aKeyEvent->PreventDefault(); // since we won't reach the one below
|
|
return NS_OK;
|
|
}
|
|
} break;
|
|
|
|
case nsIDOMKeyEvent::DOM_VK_PAGE_UP: {
|
|
AdjustIndexForDisabledOpt(mEndSelectionIndex, newIndex,
|
|
(PRInt32)numOptions,
|
|
-NS_MAX(1, mNumDisplayRows-1), -1);
|
|
} break;
|
|
|
|
case nsIDOMKeyEvent::DOM_VK_PAGE_DOWN: {
|
|
AdjustIndexForDisabledOpt(mEndSelectionIndex, newIndex,
|
|
(PRInt32)numOptions,
|
|
NS_MAX(1, mNumDisplayRows-1), 1);
|
|
} break;
|
|
|
|
case nsIDOMKeyEvent::DOM_VK_HOME: {
|
|
AdjustIndexForDisabledOpt(0, newIndex,
|
|
(PRInt32)numOptions,
|
|
0, 1);
|
|
} break;
|
|
|
|
case nsIDOMKeyEvent::DOM_VK_END: {
|
|
AdjustIndexForDisabledOpt(numOptions-1, newIndex,
|
|
(PRInt32)numOptions,
|
|
0, -1);
|
|
} break;
|
|
|
|
#if defined(XP_WIN) || defined(XP_OS2)
|
|
case nsIDOMKeyEvent::DOM_VK_F4: {
|
|
DropDownToggleKey(aKeyEvent);
|
|
return NS_OK;
|
|
} break;
|
|
#endif
|
|
|
|
case nsIDOMKeyEvent::DOM_VK_TAB: {
|
|
return NS_OK;
|
|
}
|
|
|
|
default: { // Select option with this as the first character
|
|
// XXX Not I18N compliant
|
|
|
|
if (isControl && charcode != ' ') {
|
|
return NS_OK;
|
|
}
|
|
|
|
didIncrementalSearch = true;
|
|
if (charcode == 0) {
|
|
// Backspace key will delete the last char in the string
|
|
if (keycode == NS_VK_BACK && !GetIncrementalString().IsEmpty()) {
|
|
GetIncrementalString().Truncate(GetIncrementalString().Length() - 1);
|
|
aKeyEvent->PreventDefault();
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
DOMTimeStamp keyTime;
|
|
aKeyEvent->GetTimeStamp(&keyTime);
|
|
|
|
// Incremental Search: if time elapsed is below
|
|
// INCREMENTAL_SEARCH_KEYPRESS_TIME, append this keystroke to the search
|
|
// string we will use to find options and start searching at the current
|
|
// keystroke. Otherwise, Truncate the string if it's been a long time
|
|
// since our last keypress.
|
|
if (keyTime - gLastKeyTime > INCREMENTAL_SEARCH_KEYPRESS_TIME) {
|
|
// If this is ' ' and we are at the beginning of the string, treat it as
|
|
// "select this option" (bug 191543)
|
|
if (charcode == ' ') {
|
|
newIndex = mEndSelectionIndex;
|
|
break;
|
|
}
|
|
GetIncrementalString().Truncate();
|
|
}
|
|
gLastKeyTime = keyTime;
|
|
|
|
// Append this keystroke to the search string.
|
|
PRUnichar uniChar = ToLowerCase(static_cast<PRUnichar>(charcode));
|
|
GetIncrementalString().Append(uniChar);
|
|
|
|
// See bug 188199, if all letters in incremental string are same, just try to match the first one
|
|
nsAutoString incrementalString(GetIncrementalString());
|
|
PRUint32 charIndex = 1, stringLength = incrementalString.Length();
|
|
while (charIndex < stringLength && incrementalString[charIndex] == incrementalString[charIndex - 1]) {
|
|
charIndex++;
|
|
}
|
|
if (charIndex == stringLength) {
|
|
incrementalString.Truncate(1);
|
|
stringLength = 1;
|
|
}
|
|
|
|
// Determine where we're going to start reading the string
|
|
// If we have multiple characters to look for, we start looking *at* the
|
|
// current option. If we have only one character to look for, we start
|
|
// looking *after* the current option.
|
|
// Exception: if there is no option selected to start at, we always start
|
|
// *at* 0.
|
|
PRInt32 startIndex = GetSelectedIndex();
|
|
if (startIndex == kNothingSelected) {
|
|
startIndex = 0;
|
|
} else if (stringLength == 1) {
|
|
startIndex++;
|
|
}
|
|
|
|
PRUint32 i;
|
|
for (i = 0; i < numOptions; i++) {
|
|
PRUint32 index = (i + startIndex) % numOptions;
|
|
nsCOMPtr<nsIDOMHTMLOptionElement> optionElement =
|
|
GetOption(options, index);
|
|
if (optionElement) {
|
|
nsAutoString text;
|
|
if (NS_OK == optionElement->GetText(text)) {
|
|
if (StringBeginsWith(text, incrementalString,
|
|
nsCaseInsensitiveStringComparator())) {
|
|
bool wasChanged = PerformSelection(index, isShift, isControl);
|
|
if (wasChanged) {
|
|
// dispatch event, update combobox, etc.
|
|
if (!UpdateSelection()) {
|
|
return NS_OK;
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
} // for
|
|
|
|
} break;//case
|
|
} // switch
|
|
|
|
// We ate the key if we got this far.
|
|
aKeyEvent->PreventDefault();
|
|
|
|
// If we didn't do an incremental search, clear the string
|
|
if (!didIncrementalSearch) {
|
|
GetIncrementalString().Truncate();
|
|
}
|
|
|
|
// Actually process the new index and let the selection code
|
|
// do the scrolling for us
|
|
if (newIndex != kNothingSelected) {
|
|
// If you hold control, but not shift, no key will actually do anything
|
|
// except space.
|
|
bool wasChanged = false;
|
|
if (isControl && !isShift && charcode != ' ') {
|
|
mStartSelectionIndex = newIndex;
|
|
mEndSelectionIndex = newIndex;
|
|
InvalidateFocus();
|
|
ScrollToIndex(newIndex);
|
|
|
|
#ifdef ACCESSIBILITY
|
|
FireMenuItemActiveEvent();
|
|
#endif
|
|
} else if (mControlSelectMode && charcode == ' ') {
|
|
wasChanged = SingleSelection(newIndex, true);
|
|
} else {
|
|
wasChanged = PerformSelection(newIndex, isShift, isControl);
|
|
}
|
|
if (wasChanged) {
|
|
// dispatch event, update combobox, etc.
|
|
if (!UpdateSelection()) {
|
|
return NS_OK;
|
|
}
|
|
}
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
|
|
/******************************************************************************
|
|
* nsListEventListener
|
|
*****************************************************************************/
|
|
|
|
NS_IMPL_ISUPPORTS1(nsListEventListener, nsIDOMEventListener)
|
|
|
|
NS_IMETHODIMP
|
|
nsListEventListener::HandleEvent(nsIDOMEvent* aEvent)
|
|
{
|
|
if (!mFrame)
|
|
return NS_OK;
|
|
|
|
nsAutoString eventType;
|
|
aEvent->GetType(eventType);
|
|
if (eventType.EqualsLiteral("keypress"))
|
|
return mFrame->nsListControlFrame::KeyPress(aEvent);
|
|
if (eventType.EqualsLiteral("mousedown"))
|
|
return mFrame->nsListControlFrame::MouseDown(aEvent);
|
|
if (eventType.EqualsLiteral("mouseup"))
|
|
return mFrame->nsListControlFrame::MouseUp(aEvent);
|
|
if (eventType.EqualsLiteral("mousemove"))
|
|
return mFrame->nsListControlFrame::MouseMove(aEvent);
|
|
|
|
NS_ABORT();
|
|
return NS_OK;
|
|
}
|