mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-10-12 12:55:46 +00:00
9d77060d0e
- Added support for two prefs: a) a boolean pref "layout.reflow.async" that turns asynchronous reflow on/off. The default is off. b) an integer pref "layout.reflow.timeslice" that specifies a reflow timeslice, in microseconds. When asynchronous reflow is on, the reflow command processing loop in ProcessReflowCommands() tries to return to the event loop if the time spent processing reflow commands exceeds this timeslice. The default value is 1 second.
1926 lines
60 KiB
C++
1926 lines
60 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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*
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* The contents of this file are subject to the Netscape Public
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* License Version 1.1 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.mozilla.org/NPL/
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*
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* Software distributed under the License is distributed on an "AS
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* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
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* implied. See the License for the specific language governing
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* rights and limitations under the License.
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*
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* The Original Code is mozilla.org code.
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*
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* The Initial Developer of the Original Code is Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 1998 Netscape Communications Corporation. All
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* Rights Reserved.
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*
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* Contributor(s):
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*/
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#include "nsIFrameManager.h"
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#include "nsIFrame.h"
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#include "nsIPresContext.h"
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#include "nsIPresShell.h"
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#include "nsIStyleSet.h"
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#include "nsIStyleContext.h"
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#include "nsStyleChangeList.h"
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#include "nsIEventQueueService.h"
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#include "nsIServiceManager.h"
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#include "nsCOMPtr.h"
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#include "prthread.h"
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#include "plhash.h"
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#include "nsDST.h"
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#include "nsPlaceholderFrame.h"
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#include "nsLayoutAtoms.h"
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#ifdef NS_DEBUG
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#include "nsISupportsArray.h"
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#include "nsIStyleRule.h"
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#endif
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#include "nsILayoutHistoryState.h"
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#include "nsIStatefulFrame.h"
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#include "nsIContent.h"
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#include "nsINameSpaceManager.h"
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// Class IID's
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static NS_DEFINE_IID(kEventQueueServiceCID, NS_EVENTQUEUESERVICE_CID);
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// IID's
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static NS_DEFINE_IID(kIEventQueueServiceIID, NS_IEVENTQUEUESERVICE_IID);
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//----------------------------------------------------------------------
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// Thin veneer around an NSPR hash table. Provides a map from a key that's
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// a pointer to a value that's also a pointer.
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class FrameHashTable {
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public:
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FrameHashTable(PRUint32 aNumBuckets = 16);
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~FrameHashTable();
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// Gets the value associated with the specified key
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void* Get(void* aKey);
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// Creates an association between the key and value. Returns the previous
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// value associated with the key, or NULL if there was none
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void* Put(void* aKey, void* aValue);
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// Removes association for the key, and returns its associated value
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void* Remove(void* aKey);
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// Removes all entries from the hash table
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void Clear();
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#ifdef NS_DEBUG
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void Dump(FILE* fp);
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#endif
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protected:
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PLHashTable* mTable;
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};
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MOZ_DECL_CTOR_COUNTER(UndisplayedNode);
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struct UndisplayedNode {
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UndisplayedNode(nsIContent* aContent, nsIStyleContext* aStyle)
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{
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MOZ_COUNT_CTOR(UndisplayedNode);
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mContent = aContent;
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mStyle = aStyle;
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NS_ADDREF(mStyle);
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mNext = nsnull;
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}
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UndisplayedNode(nsIStyleContext* aPseudoStyle)
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{
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MOZ_COUNT_CTOR(UndisplayedNode);
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mContent = nsnull;
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mStyle = aPseudoStyle;
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NS_ADDREF(mStyle);
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mNext = nsnull;
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}
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~UndisplayedNode(void)
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{
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MOZ_COUNT_DTOR(UndisplayedNode);
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NS_RELEASE(mStyle);
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if (mNext) {
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delete mNext;
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}
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}
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nsIContent* mContent;
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nsIStyleContext* mStyle;
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UndisplayedNode* mNext;
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};
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class UndisplayedMap {
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public:
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UndisplayedMap(PRUint32 aNumBuckets = 16);
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~UndisplayedMap(void);
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UndisplayedNode* GetFirstNode(nsIContent* aParentContent);
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nsresult AddNodeFor(nsIContent* aParentContent, nsIContent* aChild, nsIStyleContext* aStyle);
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nsresult AddNodeFor(nsIContent* aParentContent, nsIStyleContext* aPseudoStyle);
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nsresult RemoveNodeFor(nsIContent* aParentContent, UndisplayedNode* aNode);
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nsresult RemoveNodesFor(nsIContent* aParentContent);
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// Removes all entries from the hash table
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void Clear(void);
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protected:
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PLHashEntry** GetEntryFor(nsIContent* aParentContent);
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nsresult AppendNodeFor(UndisplayedNode* aNode, nsIContent* aParentContent);
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PLHashTable* mTable;
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PLHashEntry** mLastLookup;
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};
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//----------------------------------------------------------------------
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class FrameManager;
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struct CantRenderReplacedElementEvent : public PLEvent {
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CantRenderReplacedElementEvent(FrameManager* aFrameManager, nsIFrame* aFrame);
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nsIFrame* mFrame; // the frame that can't be rendered
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CantRenderReplacedElementEvent* mNext; // next event in the list
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};
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class FrameManager : public nsIFrameManager
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{
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public:
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FrameManager();
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virtual ~FrameManager();
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NS_DECL_AND_IMPL_ZEROING_OPERATOR_NEW
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// nsISupports
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NS_DECL_ISUPPORTS
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// nsIFrameManager
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NS_IMETHOD Init(nsIPresShell* aPresShell, nsIStyleSet* aStyleSet);
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// Gets and sets the root frame
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NS_IMETHOD GetRootFrame(nsIFrame** aRootFrame) const;
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NS_IMETHOD SetRootFrame(nsIFrame* aRootFrame);
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// Primary frame functions
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NS_IMETHOD GetPrimaryFrameFor(nsIContent* aContent, nsIFrame** aPrimaryFrame);
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NS_IMETHOD SetPrimaryFrameFor(nsIContent* aContent,
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nsIFrame* aPrimaryFrame);
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NS_IMETHOD ClearPrimaryFrameMap();
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// Placeholder frame functions
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NS_IMETHOD GetPlaceholderFrameFor(nsIFrame* aFrame,
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nsIFrame** aPlaceholderFrame) const;
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NS_IMETHOD SetPlaceholderFrameFor(nsIFrame* aFrame,
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nsIFrame* aPlaceholderFrame);
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NS_IMETHOD ClearPlaceholderFrameMap();
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// Undisplayed content functions
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NS_IMETHOD SetUndisplayedContent(nsIContent* aContent, nsIStyleContext* aStyleContext);
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NS_IMETHOD SetUndisplayedPseudoIn(nsIStyleContext* aPseudoContext,
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nsIContent* aParentContent);
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NS_IMETHOD ClearUndisplayedContentIn(nsIContent* aContent, nsIContent* aParentContent);
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NS_IMETHOD ClearAllUndisplayedContentIn(nsIContent* aParentContent);
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NS_IMETHOD ClearUndisplayedContentMap();
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// Functions for manipulating the frame model
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NS_IMETHOD AppendFrames(nsIPresContext* aPresContext,
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nsIPresShell& aPresShell,
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nsIFrame* aParentFrame,
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nsIAtom* aListName,
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nsIFrame* aFrameList);
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NS_IMETHOD InsertFrames(nsIPresContext* aPresContext,
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nsIPresShell& aPresShell,
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nsIFrame* aParentFrame,
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nsIAtom* aListName,
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nsIFrame* aPrevFrame,
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nsIFrame* aFrameList);
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NS_IMETHOD RemoveFrame(nsIPresContext* aPresContext,
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nsIPresShell& aPresShell,
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nsIFrame* aParentFrame,
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nsIAtom* aListName,
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nsIFrame* aOldFrame);
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NS_IMETHOD ReplaceFrame(nsIPresContext* aPresContext,
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nsIPresShell& aPresShell,
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nsIFrame* aParentFrame,
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nsIAtom* aListName,
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nsIFrame* aOldFrame,
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nsIFrame* aNewFrame);
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NS_IMETHOD CantRenderReplacedElement(nsIPresContext* aPresContext,
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nsIFrame* aFrame);
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NS_IMETHOD NotifyDestroyingFrame(nsIFrame* aFrame);
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NS_IMETHOD ReParentStyleContext(nsIPresContext* aPresContext,
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nsIFrame* aFrame,
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nsIStyleContext* aNewParentContext);
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NS_IMETHOD ComputeStyleChangeFor(nsIPresContext* aPresContext,
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nsIFrame* aFrame,
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PRInt32 aAttrNameSpaceID,
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nsIAtom* aAttribute,
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nsStyleChangeList& aChangeList,
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PRInt32 aMinChange,
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PRInt32& aTopLevelChange);
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NS_IMETHOD CaptureFrameState(nsIPresContext* aPresContext,
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nsIFrame* aFrame,
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nsILayoutHistoryState* aState);
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NS_IMETHOD RestoreFrameState(nsIPresContext* aPresContext,
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nsIFrame* aFrame,
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nsILayoutHistoryState* aState);
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// Gets and sets properties on a given frame
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NS_IMETHOD GetFrameProperty(nsIFrame* aFrame,
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nsIAtom* aPropertyName,
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PRUint32 aOptions,
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void** aPropertyValue);
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NS_IMETHOD SetFrameProperty(nsIFrame* aFrame,
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nsIAtom* aPropertyName,
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void* aPropertyValue,
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NSFMPropertyDtorFunc aPropDtorFunc);
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NS_IMETHOD RemoveFrameProperty(nsIFrame* aFrame,
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nsIAtom* aPropertyName);
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#ifdef NS_DEBUG
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NS_IMETHOD DebugVerifyStyleTree(nsIFrame* aFrame);
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#endif
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private:
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struct PropertyList {
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nsCOMPtr<nsIAtom> mName; // property name
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nsDST* mFrameValueMap; // map of frame/value pairs
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NSFMPropertyDtorFunc mDtorFunc; // property specific value dtor function
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PropertyList* mNext;
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PropertyList(nsIAtom* aName,
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NSFMPropertyDtorFunc aDtorFunc,
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nsDST::NodeArena* aDSTNodeArena);
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~PropertyList();
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// Removes the property associated with the given frame, and destroys
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// the property value
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PRBool RemovePropertyForFrame(nsIPresContext* aPresContext, nsIFrame* aFrame);
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// Remove and destroy all remaining properties
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void RemoveAllProperties(nsIPresContext* aPresContext);
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};
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nsIPresShell* mPresShell; // weak link, because the pres shell owns us
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nsIStyleSet* mStyleSet; // weak link. pres shell holds a reference
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nsIFrame* mRootFrame;
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nsDST::NodeArena* mDSTNodeArena; // weak link. DST owns
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nsDST* mPrimaryFrameMap;
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FrameHashTable* mPlaceholderMap;
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UndisplayedMap* mUndisplayedMap;
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CantRenderReplacedElementEvent* mPostedEvents;
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PropertyList* mPropertyList;
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void ReResolveStyleContext(nsIPresContext* aPresContext,
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nsIFrame* aFrame,
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nsIStyleContext* aParentContext,
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nsIContent* aParentContent,
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PRInt32 aAttrNameSpaceID,
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nsIAtom* aAttribute,
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nsStyleChangeList& aChangeList,
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PRInt32 aMinChange,
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PRInt32& aResultChange);
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void RevokePostedEvents();
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CantRenderReplacedElementEvent** FindPostedEventFor(nsIFrame* aFrame);
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void DequeuePostedEventFor(nsIFrame* aFrame);
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void DestroyPropertyList(nsIPresContext* aPresContext);
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PropertyList* GetPropertyListFor(nsIAtom* aPropertyName) const;
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void RemoveAllPropertiesFor(nsIPresContext* aPresContext, nsIFrame* aFrame);
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friend struct CantRenderReplacedElementEvent;
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static void HandlePLEvent(CantRenderReplacedElementEvent* aEvent);
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static void DestroyPLEvent(CantRenderReplacedElementEvent* aEvent);
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};
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//----------------------------------------------------------------------
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NS_LAYOUT nsresult
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NS_NewFrameManager(nsIFrameManager** aInstancePtrResult)
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{
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NS_ENSURE_ARG_POINTER(aInstancePtrResult);
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if (!aInstancePtrResult) {
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return NS_ERROR_NULL_POINTER;
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}
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FrameManager* it = new FrameManager;
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if (!it) {
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return NS_ERROR_OUT_OF_MEMORY;
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}
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return it->QueryInterface(nsIFrameManager::GetIID(), (void **)aInstancePtrResult);
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}
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FrameManager::FrameManager()
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{
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NS_INIT_REFCNT();
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}
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NS_IMPL_ADDREF(FrameManager)
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NS_IMPL_RELEASE(FrameManager)
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FrameManager::~FrameManager()
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{
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nsCOMPtr<nsIPresContext> presContext;
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mPresShell->GetPresContext(getter_AddRefs(presContext));
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// Revoke any events posted to the event queue that we haven't processed yet
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RevokePostedEvents();
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// Destroy the frame hierarchy. Don't destroy the property lists until after
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// we've destroyed the frame hierarchy because some frames may expect to be
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// able to retrieve their properties during destruction
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if (mRootFrame) {
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mRootFrame->Destroy(presContext);
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mRootFrame = nsnull;
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}
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delete mPrimaryFrameMap;
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delete mPlaceholderMap;
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delete mUndisplayedMap;
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DestroyPropertyList(presContext);
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}
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nsresult
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FrameManager::QueryInterface(const nsIID& aIID, void** aInstancePtr)
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{
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if (aIID.Equals(GetIID())) {
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*aInstancePtr = (void*)(nsIFrameManager*)this;
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NS_ADDREF_THIS();
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return NS_OK;
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}
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return NS_NOINTERFACE;
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}
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NS_IMETHODIMP
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FrameManager::Init(nsIPresShell* aPresShell,
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nsIStyleSet* aStyleSet)
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{
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mPresShell = aPresShell;
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mStyleSet = aStyleSet;
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// Allocate the node arena that's shared by all the DST objects
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mDSTNodeArena = nsDST::NewMemoryArena();
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if (!mDSTNodeArena) {
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return NS_ERROR_OUT_OF_MEMORY;
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}
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return NS_OK;
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}
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NS_IMETHODIMP
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FrameManager::GetRootFrame(nsIFrame** aRootFrame) const
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{
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NS_ENSURE_ARG_POINTER(aRootFrame);
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*aRootFrame = mRootFrame;
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return NS_OK;
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}
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NS_IMETHODIMP
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FrameManager::SetRootFrame(nsIFrame* aRootFrame)
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{
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NS_PRECONDITION(!mRootFrame, "already have a root frame");
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if (mRootFrame) {
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return NS_ERROR_UNEXPECTED;
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}
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mRootFrame = aRootFrame;
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return NS_OK;
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}
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//----------------------------------------------------------------------
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// Primary frame functions
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NS_IMETHODIMP
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FrameManager::GetPrimaryFrameFor(nsIContent* aContent, nsIFrame** aResult)
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{
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NS_ENSURE_ARG_POINTER(aResult);
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NS_ENSURE_ARG_POINTER(aContent);
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if (!aResult) {
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return NS_ERROR_NULL_POINTER;
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}
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if (mPrimaryFrameMap) {
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mPrimaryFrameMap->Search(aContent, 0, (void**)aResult);
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if (!*aResult) {
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nsCOMPtr<nsIStyleSet> styleSet;
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nsCOMPtr<nsIPresContext> presContext;
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// Give the frame construction code the opportunity to return the
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// frame that maps the content object
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mPresShell->GetStyleSet(getter_AddRefs(styleSet));
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mPresShell->GetPresContext(getter_AddRefs(presContext));
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styleSet->FindPrimaryFrameFor(presContext, this, aContent, aResult);
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}
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} else {
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*aResult = nsnull;
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}
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return NS_OK;
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}
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NS_IMETHODIMP
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FrameManager::SetPrimaryFrameFor(nsIContent* aContent,
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nsIFrame* aPrimaryFrame)
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{
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NS_ENSURE_ARG_POINTER(aContent);
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// If aPrimaryFrame is NULL, then remove the mapping
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if (!aPrimaryFrame) {
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if (mPrimaryFrameMap) {
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mPrimaryFrameMap->Remove(aContent);
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}
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} else {
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// Create a new DST if necessary
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if (!mPrimaryFrameMap) {
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mPrimaryFrameMap = new nsDST(mDSTNodeArena);
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if (!mPrimaryFrameMap) {
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return NS_ERROR_OUT_OF_MEMORY;
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}
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}
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// Add a mapping to the hash table
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mPrimaryFrameMap->Insert(aContent, (void*)aPrimaryFrame, nsnull);
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}
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return NS_OK;
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}
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NS_IMETHODIMP
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FrameManager::ClearPrimaryFrameMap()
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{
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if (mPrimaryFrameMap) {
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mPrimaryFrameMap->Clear();
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}
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return NS_OK;
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}
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// Placeholder frame functions
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NS_IMETHODIMP
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FrameManager::GetPlaceholderFrameFor(nsIFrame* aFrame,
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nsIFrame** aResult) const
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{
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NS_ENSURE_ARG_POINTER(aResult);
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NS_ENSURE_ARG_POINTER(aFrame);
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if (!aResult || !aFrame) {
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return NS_ERROR_NULL_POINTER;
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}
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if (mPlaceholderMap) {
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*aResult = (nsIFrame*)mPlaceholderMap->Get(aFrame);
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} else {
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*aResult = nsnull;
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}
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return NS_OK;
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}
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NS_IMETHODIMP
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FrameManager::SetPlaceholderFrameFor(nsIFrame* aFrame,
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nsIFrame* aPlaceholderFrame)
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{
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NS_ENSURE_ARG_POINTER(aFrame);
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#ifdef NS_DEBUG
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// Verify that the placeholder frame is of the correct type
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if (aPlaceholderFrame) {
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nsIAtom* frameType;
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aPlaceholderFrame->GetFrameType(&frameType);
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NS_PRECONDITION(nsLayoutAtoms::placeholderFrame == frameType, "unexpected frame type");
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NS_IF_RELEASE(frameType);
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}
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#endif
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// If aPlaceholderFrame is NULL, then remove the mapping
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if (!aPlaceholderFrame) {
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if (mPlaceholderMap) {
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mPlaceholderMap->Remove(aFrame);
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}
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} else {
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// Create a new hash table if necessary
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if (!mPlaceholderMap) {
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mPlaceholderMap = new FrameHashTable;
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if (!mPlaceholderMap) {
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return NS_ERROR_OUT_OF_MEMORY;
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}
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}
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// Add a mapping to the hash table
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mPlaceholderMap->Put(aFrame, (void*)aPlaceholderFrame);
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}
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return NS_OK;
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}
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|
|
NS_IMETHODIMP
|
|
FrameManager::ClearPlaceholderFrameMap()
|
|
{
|
|
if (mPlaceholderMap) {
|
|
mPlaceholderMap->Clear();
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
//----------------------------------------------------------------------
|
|
|
|
NS_IMETHODIMP
|
|
FrameManager::SetUndisplayedContent(nsIContent* aContent,
|
|
nsIStyleContext* aStyleContext)
|
|
{
|
|
if (! mUndisplayedMap) {
|
|
mUndisplayedMap = new UndisplayedMap;
|
|
}
|
|
if (mUndisplayedMap) {
|
|
nsresult result = NS_OK;
|
|
nsIContent* parent = nsnull;
|
|
aContent->GetParent(parent);
|
|
if (parent) {
|
|
result = mUndisplayedMap->AddNodeFor(parent, aContent, aStyleContext);
|
|
NS_RELEASE(parent);
|
|
}
|
|
return result;
|
|
}
|
|
return NS_ERROR_OUT_OF_MEMORY;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
FrameManager::SetUndisplayedPseudoIn(nsIStyleContext* aPseudoContext,
|
|
nsIContent* aParentContent)
|
|
{
|
|
if (! mUndisplayedMap) {
|
|
mUndisplayedMap = new UndisplayedMap;
|
|
}
|
|
if (mUndisplayedMap) {
|
|
return mUndisplayedMap->AddNodeFor(aParentContent, aPseudoContext);
|
|
}
|
|
return NS_ERROR_OUT_OF_MEMORY;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
FrameManager::ClearUndisplayedContentIn(nsIContent* aContent, nsIContent* aParentContent)
|
|
{
|
|
if (mUndisplayedMap) {
|
|
UndisplayedNode* node = mUndisplayedMap->GetFirstNode(aParentContent);
|
|
while (node) {
|
|
if (node->mContent == aContent) {
|
|
return mUndisplayedMap->RemoveNodeFor(aParentContent, node);
|
|
}
|
|
node = node->mNext;
|
|
}
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
FrameManager::ClearAllUndisplayedContentIn(nsIContent* aParentContent)
|
|
{
|
|
if (mUndisplayedMap) {
|
|
return mUndisplayedMap->RemoveNodesFor(aParentContent);
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
FrameManager::ClearUndisplayedContentMap()
|
|
{
|
|
if (mUndisplayedMap) {
|
|
mUndisplayedMap->Clear();
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
//----------------------------------------------------------------------
|
|
|
|
NS_IMETHODIMP
|
|
FrameManager::AppendFrames(nsIPresContext* aPresContext,
|
|
nsIPresShell& aPresShell,
|
|
nsIFrame* aParentFrame,
|
|
nsIAtom* aListName,
|
|
nsIFrame* aFrameList)
|
|
{
|
|
return aParentFrame->AppendFrames(aPresContext, aPresShell, aListName,
|
|
aFrameList);
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
FrameManager::InsertFrames(nsIPresContext* aPresContext,
|
|
nsIPresShell& aPresShell,
|
|
nsIFrame* aParentFrame,
|
|
nsIAtom* aListName,
|
|
nsIFrame* aPrevFrame,
|
|
nsIFrame* aFrameList)
|
|
{
|
|
return aParentFrame->InsertFrames(aPresContext, aPresShell, aListName,
|
|
aPrevFrame, aFrameList);
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
FrameManager::RemoveFrame(nsIPresContext* aPresContext,
|
|
nsIPresShell& aPresShell,
|
|
nsIFrame* aParentFrame,
|
|
nsIAtom* aListName,
|
|
nsIFrame* aOldFrame)
|
|
{
|
|
return aParentFrame->RemoveFrame(aPresContext, aPresShell, aListName,
|
|
aOldFrame);
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
FrameManager::ReplaceFrame(nsIPresContext* aPresContext,
|
|
nsIPresShell& aPresShell,
|
|
nsIFrame* aParentFrame,
|
|
nsIAtom* aListName,
|
|
nsIFrame* aOldFrame,
|
|
nsIFrame* aNewFrame)
|
|
{
|
|
return aParentFrame->ReplaceFrame(aPresContext, aPresShell, aListName,
|
|
aOldFrame, aNewFrame);
|
|
}
|
|
|
|
//----------------------------------------------------------------------
|
|
|
|
NS_IMETHODIMP
|
|
FrameManager::NotifyDestroyingFrame(nsIFrame* aFrame)
|
|
{
|
|
// Dequeue and destroy and posted events for this frame
|
|
DequeuePostedEventFor(aFrame);
|
|
|
|
// Remove all properties associated with the frame
|
|
nsCOMPtr<nsIPresContext> presContext;
|
|
mPresShell->GetPresContext(getter_AddRefs(presContext));
|
|
|
|
RemoveAllPropertiesFor(presContext, aFrame);
|
|
return NS_OK;
|
|
}
|
|
|
|
void
|
|
FrameManager::RevokePostedEvents()
|
|
{
|
|
if (mPostedEvents) {
|
|
mPostedEvents = nsnull;
|
|
|
|
// Revoke any events in the event queue that are owned by us
|
|
nsIEventQueueService* eventService;
|
|
nsresult rv;
|
|
|
|
rv = nsServiceManager::GetService(kEventQueueServiceCID,
|
|
kIEventQueueServiceIID,
|
|
(nsISupports **)&eventService);
|
|
if (NS_SUCCEEDED(rv)) {
|
|
nsCOMPtr<nsIEventQueue> eventQueue;
|
|
rv = eventService->GetThreadEventQueue(NS_CURRENT_THREAD,
|
|
getter_AddRefs(eventQueue));
|
|
nsServiceManager::ReleaseService(kEventQueueServiceCID, eventService);
|
|
|
|
if (NS_SUCCEEDED(rv) && eventQueue) {
|
|
eventQueue->RevokeEvents(this);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
CantRenderReplacedElementEvent**
|
|
FrameManager::FindPostedEventFor(nsIFrame* aFrame)
|
|
{
|
|
CantRenderReplacedElementEvent** event = &mPostedEvents;
|
|
|
|
while (*event) {
|
|
if ((*event)->mFrame == aFrame) {
|
|
return event;
|
|
}
|
|
event = &(*event)->mNext;
|
|
}
|
|
|
|
return event;
|
|
}
|
|
|
|
void
|
|
FrameManager::DequeuePostedEventFor(nsIFrame* aFrame)
|
|
{
|
|
// If there's a posted event for this frame, then remove it
|
|
CantRenderReplacedElementEvent** event = FindPostedEventFor(aFrame);
|
|
if (*event) {
|
|
CantRenderReplacedElementEvent* tmp = *event;
|
|
|
|
// Remove it from our linked list of posted events
|
|
*event = (*event)->mNext;
|
|
|
|
// Dequeue it from the event queue
|
|
nsIEventQueueService* eventService;
|
|
nsresult rv;
|
|
|
|
rv = nsServiceManager::GetService(kEventQueueServiceCID,
|
|
kIEventQueueServiceIID,
|
|
(nsISupports **)&eventService);
|
|
if (NS_SUCCEEDED(rv)) {
|
|
nsCOMPtr<nsIEventQueue> eventQueue;
|
|
rv = eventService->GetThreadEventQueue(NS_CURRENT_THREAD,
|
|
getter_AddRefs(eventQueue));
|
|
nsServiceManager::ReleaseService(kEventQueueServiceCID, eventService);
|
|
|
|
if (NS_SUCCEEDED(rv) && eventQueue) {
|
|
PLEventQueue* plqueue;
|
|
|
|
eventQueue->GetPLEventQueue(&plqueue);
|
|
if (plqueue) {
|
|
// Removes the event and destroys it
|
|
PL_DequeueEvent(tmp, plqueue);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
void
|
|
FrameManager::HandlePLEvent(CantRenderReplacedElementEvent* aEvent)
|
|
{
|
|
FrameManager* frameManager = (FrameManager*)aEvent->owner;
|
|
|
|
// Remove the posted event from the linked list
|
|
CantRenderReplacedElementEvent** events = &frameManager->mPostedEvents;
|
|
while (*events) {
|
|
if (*events == aEvent) {
|
|
*events = (*events)->mNext;
|
|
break;
|
|
} else {
|
|
events = &(*events)->mNext;
|
|
}
|
|
}
|
|
|
|
// Notify the style system and then process any reflow commands that
|
|
// are generated
|
|
nsCOMPtr<nsIPresContext> presContext;
|
|
frameManager->mPresShell->EnterReflowLock();
|
|
frameManager->mPresShell->GetPresContext(getter_AddRefs(presContext));
|
|
frameManager->mStyleSet->CantRenderReplacedElement(presContext, aEvent->mFrame);
|
|
frameManager->mPresShell->ExitReflowLock(PR_TRUE, PR_TRUE);
|
|
}
|
|
|
|
void
|
|
FrameManager::DestroyPLEvent(CantRenderReplacedElementEvent* aEvent)
|
|
{
|
|
delete aEvent;
|
|
}
|
|
|
|
CantRenderReplacedElementEvent::CantRenderReplacedElementEvent(FrameManager* aFrameManager,
|
|
nsIFrame* aFrame)
|
|
{
|
|
// Note: because the frame manager owns us we don't hold a reference to the
|
|
// frame manager
|
|
PL_InitEvent(this, aFrameManager, (PLHandleEventProc)&FrameManager::HandlePLEvent,
|
|
(PLDestroyEventProc)&FrameManager::DestroyPLEvent);
|
|
mFrame = aFrame;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
FrameManager::CantRenderReplacedElement(nsIPresContext* aPresContext,
|
|
nsIFrame* aFrame)
|
|
{
|
|
nsIEventQueueService* eventService;
|
|
nsresult rv;
|
|
|
|
// We need to notify the style stystem, but post the notification so it
|
|
// doesn't happen now
|
|
rv = nsServiceManager::GetService(kEventQueueServiceCID,
|
|
kIEventQueueServiceIID,
|
|
(nsISupports **)&eventService);
|
|
if (NS_SUCCEEDED(rv)) {
|
|
nsCOMPtr<nsIEventQueue> eventQueue;
|
|
rv = eventService->GetThreadEventQueue(NS_CURRENT_THREAD,
|
|
getter_AddRefs(eventQueue));
|
|
nsServiceManager::ReleaseService(kEventQueueServiceCID, eventService);
|
|
|
|
if (NS_SUCCEEDED(rv) && eventQueue) {
|
|
#ifdef NS_DEBUG
|
|
// Verify that there isn't already a posted event associated with
|
|
// this frame
|
|
NS_ASSERTION(!*FindPostedEventFor(aFrame), "frame already has posted event");
|
|
#endif
|
|
CantRenderReplacedElementEvent* ev;
|
|
|
|
// Create a new event
|
|
ev = new CantRenderReplacedElementEvent(this, aFrame);
|
|
|
|
// Add the event to our linked list of posted events
|
|
ev->mNext = mPostedEvents;
|
|
mPostedEvents = ev;
|
|
|
|
// Post the event
|
|
eventQueue->PostEvent(ev);
|
|
}
|
|
}
|
|
|
|
return rv;
|
|
}
|
|
|
|
#ifdef NS_DEBUG
|
|
static void
|
|
DumpContext(nsIFrame* aFrame, nsIStyleContext* aContext)
|
|
{
|
|
if (aFrame) {
|
|
fputs("frame: ", stdout);
|
|
nsAutoString name;
|
|
nsIFrameDebug* frameDebug;
|
|
|
|
if (NS_SUCCEEDED(aFrame->QueryInterface(nsIFrameDebug::GetIID(), (void**)&frameDebug))) {
|
|
frameDebug->GetFrameName(name);
|
|
fputs(name, stdout);
|
|
}
|
|
fprintf(stdout, " (%p)", aFrame);
|
|
}
|
|
if (aContext) {
|
|
fprintf(stdout, " style: %p ", aContext);
|
|
|
|
nsIAtom* pseudoTag;
|
|
aContext->GetPseudoType(pseudoTag);
|
|
if (pseudoTag) {
|
|
nsAutoString buffer;
|
|
pseudoTag->ToString(buffer);
|
|
fputs(buffer, stdout);
|
|
fputs(" ", stdout);
|
|
NS_RELEASE(pseudoTag);
|
|
}
|
|
|
|
PRInt32 count = aContext->GetStyleRuleCount();
|
|
if (0 < count) {
|
|
fputs("{\n", stdout);
|
|
nsISupportsArray* rules = aContext->GetStyleRules();
|
|
PRInt32 ix;
|
|
for (ix = 0; ix < count; ix++) {
|
|
nsIStyleRule* rule = (nsIStyleRule*)rules->ElementAt(ix);
|
|
rule->List(stdout, 1);
|
|
NS_RELEASE(rule);
|
|
}
|
|
NS_RELEASE(rules);
|
|
fputs("}\n", stdout);
|
|
}
|
|
else {
|
|
fputs("{}\n", stdout);
|
|
}
|
|
}
|
|
}
|
|
|
|
static void
|
|
VerifyContextParent(nsIFrame* aFrame, nsIStyleContext* aContext, nsIStyleContext* aParentContext)
|
|
{
|
|
nsIStyleContext* actualParentContext = aContext->GetParent();
|
|
|
|
if (aParentContext) {
|
|
if (aParentContext != actualParentContext) {
|
|
DumpContext(aFrame, aContext);
|
|
if (aContext == aParentContext) {
|
|
fputs("Using parent's style context\n\n", stdout);
|
|
}
|
|
else {
|
|
fputs("Wrong parent style context: ", stdout);
|
|
DumpContext(nsnull, actualParentContext);
|
|
fputs("should be using: ", stdout);
|
|
DumpContext(nsnull, aParentContext);
|
|
fputs("\n", stdout);
|
|
}
|
|
}
|
|
}
|
|
else {
|
|
if (actualParentContext) {
|
|
DumpContext(aFrame, aContext);
|
|
fputs("Has parent context: ", stdout);
|
|
DumpContext(nsnull, actualParentContext);
|
|
fputs("Should be null\n\n", stdout);
|
|
}
|
|
}
|
|
NS_IF_RELEASE(actualParentContext);
|
|
}
|
|
|
|
static void
|
|
VerifyContextParent(nsIFrame* aFrame, nsIStyleContext* aParentContext)
|
|
{
|
|
nsIStyleContext* context;
|
|
aFrame->GetStyleContext(&context);
|
|
VerifyContextParent(aFrame, context, aParentContext);
|
|
NS_RELEASE(context);
|
|
}
|
|
|
|
static void
|
|
VerifyStyleTree(nsIFrame* aFrame, nsIStyleContext* aParentContext)
|
|
{
|
|
nsIStyleContext* context;
|
|
aFrame->GetStyleContext(&context);
|
|
|
|
VerifyContextParent(aFrame, aParentContext);
|
|
|
|
PRInt32 listIndex = 0;
|
|
nsIAtom* childList = nsnull;
|
|
nsIFrame* child;
|
|
nsIAtom* frameType;
|
|
|
|
do {
|
|
child = nsnull;
|
|
nsresult result = aFrame->FirstChild(childList, &child);
|
|
while ((NS_SUCCEEDED(result)) && child) {
|
|
nsFrameState state;
|
|
child->GetFrameState(&state);
|
|
if (NS_FRAME_OUT_OF_FLOW != (state & NS_FRAME_OUT_OF_FLOW)) {
|
|
// only do frames that are in flow
|
|
child->GetFrameType(&frameType);
|
|
if (nsLayoutAtoms::placeholderFrame == frameType) { // placeholder
|
|
// get out of flow frame and recurse there
|
|
nsIFrame* outOfFlowFrame = ((nsPlaceholderFrame*)child)->GetOutOfFlowFrame();
|
|
NS_ASSERTION(outOfFlowFrame, "no out-of-flow frame");
|
|
|
|
nsIStyleContext* outOfFlowContext;
|
|
outOfFlowFrame->GetStyleContext(&outOfFlowContext);
|
|
VerifyContextParent(child, outOfFlowContext);
|
|
NS_RELEASE(outOfFlowContext);
|
|
|
|
VerifyStyleTree(outOfFlowFrame, context);
|
|
}
|
|
else { // regular frame
|
|
VerifyStyleTree(child, context);
|
|
}
|
|
NS_IF_RELEASE(frameType);
|
|
}
|
|
|
|
child->GetNextSibling(&child);
|
|
}
|
|
|
|
NS_IF_RELEASE(childList);
|
|
aFrame->GetAdditionalChildListName(listIndex++, &childList);
|
|
} while (childList);
|
|
|
|
// do additional contexts
|
|
PRInt32 contextIndex = -1;
|
|
while (1 == 1) {
|
|
nsIStyleContext* extraContext = nsnull;
|
|
aFrame->GetAdditionalStyleContext(++contextIndex, &extraContext);
|
|
if (extraContext) {
|
|
VerifyContextParent(aFrame, extraContext, context);
|
|
NS_RELEASE(extraContext);
|
|
}
|
|
else {
|
|
break;
|
|
}
|
|
}
|
|
NS_RELEASE(context);
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
FrameManager::DebugVerifyStyleTree(nsIFrame* aFrame)
|
|
{
|
|
if (aFrame) {
|
|
nsIStyleContext* context;
|
|
aFrame->GetStyleContext(&context);
|
|
nsIStyleContext* parentContext = context->GetParent();
|
|
VerifyStyleTree(aFrame, parentContext);
|
|
NS_IF_RELEASE(parentContext);
|
|
NS_RELEASE(context);
|
|
}
|
|
return NS_OK;
|
|
}
|
|
#endif
|
|
|
|
NS_IMETHODIMP
|
|
FrameManager::ReParentStyleContext(nsIPresContext* aPresContext,
|
|
nsIFrame* aFrame,
|
|
nsIStyleContext* aNewParentContext)
|
|
{
|
|
nsresult result = NS_ERROR_NULL_POINTER;
|
|
if (aFrame) {
|
|
#ifdef NS_DEBUG
|
|
DebugVerifyStyleTree(aFrame);
|
|
#endif
|
|
|
|
nsIStyleContext* oldContext = nsnull;
|
|
aFrame->GetStyleContext(&oldContext);
|
|
|
|
if (oldContext) {
|
|
nsIStyleContext* newContext = nsnull;
|
|
result = mStyleSet->ReParentStyleContext(aPresContext,
|
|
oldContext, aNewParentContext,
|
|
&newContext);
|
|
if (NS_SUCCEEDED(result) && newContext) {
|
|
if (newContext != oldContext) {
|
|
PRInt32 listIndex = 0;
|
|
nsIAtom* childList = nsnull;
|
|
nsIFrame* child;
|
|
nsIAtom* frameType;
|
|
|
|
do {
|
|
child = nsnull;
|
|
result = aFrame->FirstChild(childList, &child);
|
|
while ((NS_SUCCEEDED(result)) && child) {
|
|
nsFrameState state;
|
|
child->GetFrameState(&state);
|
|
if (NS_FRAME_OUT_OF_FLOW != (state & NS_FRAME_OUT_OF_FLOW)) {
|
|
// only do frames that are in flow
|
|
child->GetFrameType(&frameType);
|
|
if (nsLayoutAtoms::placeholderFrame == frameType) { // placeholder
|
|
// get out of flow frame and recurse there
|
|
nsIFrame* outOfFlowFrame = ((nsPlaceholderFrame*)child)->GetOutOfFlowFrame();
|
|
NS_ASSERTION(outOfFlowFrame, "no out-of-flow frame");
|
|
|
|
result = ReParentStyleContext(aPresContext, outOfFlowFrame, newContext);
|
|
|
|
// reparent placeholder's context under out of flow frame
|
|
nsIStyleContext* outOfFlowContext;
|
|
outOfFlowFrame->GetStyleContext(&outOfFlowContext);
|
|
ReParentStyleContext(aPresContext, child, outOfFlowContext);
|
|
NS_RELEASE(outOfFlowContext);
|
|
}
|
|
else { // regular frame
|
|
result = ReParentStyleContext(aPresContext, child, newContext);
|
|
}
|
|
NS_IF_RELEASE(frameType);
|
|
}
|
|
|
|
child->GetNextSibling(&child);
|
|
}
|
|
|
|
NS_IF_RELEASE(childList);
|
|
aFrame->GetAdditionalChildListName(listIndex++, &childList);
|
|
} while (childList);
|
|
|
|
aFrame->SetStyleContext(aPresContext, newContext);
|
|
|
|
// do additional contexts
|
|
PRInt32 contextIndex = -1;
|
|
while (1 == 1) {
|
|
nsIStyleContext* oldExtraContext = nsnull;
|
|
result = aFrame->GetAdditionalStyleContext(++contextIndex, &oldExtraContext);
|
|
if (NS_SUCCEEDED(result)) {
|
|
if (oldExtraContext) {
|
|
nsIStyleContext* newExtraContext = nsnull;
|
|
result = mStyleSet->ReParentStyleContext(aPresContext,
|
|
oldExtraContext, newContext,
|
|
&newExtraContext);
|
|
if (NS_SUCCEEDED(result) && newExtraContext) {
|
|
aFrame->SetAdditionalStyleContext(contextIndex, newExtraContext);
|
|
NS_RELEASE(newExtraContext);
|
|
}
|
|
NS_RELEASE(oldExtraContext);
|
|
}
|
|
}
|
|
else {
|
|
result = NS_OK; // ok not to have extras (or run out)
|
|
break;
|
|
}
|
|
}
|
|
#ifdef NS_DEBUG
|
|
VerifyStyleTree(aFrame, aNewParentContext);
|
|
#endif
|
|
}
|
|
NS_RELEASE(newContext);
|
|
}
|
|
NS_RELEASE(oldContext);
|
|
}
|
|
}
|
|
return result;
|
|
}
|
|
|
|
static PRBool
|
|
HasAttributeContent(nsIStyleContext* aStyleContext,
|
|
PRInt32 aNameSpaceID,
|
|
nsIAtom* aAttribute)
|
|
{
|
|
PRBool result = PR_FALSE;
|
|
if (aStyleContext) {
|
|
const nsStyleContent* content = (const nsStyleContent*)aStyleContext->GetStyleData(eStyleStruct_Content);
|
|
PRUint32 count = content->ContentCount();
|
|
while ((0 < count) && (! result)) {
|
|
nsStyleContentType contentType;
|
|
nsAutoString contentString;
|
|
content->GetContentAt(--count, contentType, contentString);
|
|
if (eStyleContentType_Attr == contentType) {
|
|
nsIAtom* attrName = nsnull;
|
|
PRInt32 attrNameSpace = kNameSpaceID_None;
|
|
PRInt32 barIndex = contentString.FindChar('|'); // CSS namespace delimiter
|
|
if (-1 != barIndex) {
|
|
nsAutoString nameSpaceVal;
|
|
contentString.Left(nameSpaceVal, barIndex);
|
|
PRInt32 error;
|
|
attrNameSpace = nameSpaceVal.ToInteger(&error, 10);
|
|
contentString.Cut(0, barIndex + 1);
|
|
if (contentString.Length()) {
|
|
attrName = NS_NewAtom(contentString);
|
|
}
|
|
}
|
|
else {
|
|
attrName = NS_NewAtom(contentString);
|
|
}
|
|
if ((attrName == aAttribute) &&
|
|
((attrNameSpace == aNameSpaceID) ||
|
|
(attrNameSpace == kNameSpaceID_Unknown))) {
|
|
result = PR_TRUE;
|
|
}
|
|
NS_IF_RELEASE(attrName);
|
|
}
|
|
}
|
|
}
|
|
return result;
|
|
}
|
|
|
|
|
|
static PRInt32
|
|
CaptureChange(nsIStyleContext* aOldContext, nsIStyleContext* aNewContext,
|
|
nsIFrame* aFrame, nsIContent* aContent,
|
|
nsStyleChangeList& aChangeList, PRInt32 aMinChange)
|
|
{
|
|
PRInt32 ourChange = NS_STYLE_HINT_NONE;
|
|
aNewContext->CalcStyleDifference(aOldContext, ourChange);
|
|
if (aMinChange < ourChange) {
|
|
aChangeList.AppendChange(aFrame, aContent, ourChange);
|
|
aMinChange = ourChange;
|
|
}
|
|
return aMinChange;
|
|
}
|
|
|
|
void
|
|
FrameManager::ReResolveStyleContext(nsIPresContext* aPresContext,
|
|
nsIFrame* aFrame,
|
|
nsIStyleContext* aParentContext,
|
|
nsIContent* aParentContent,
|
|
PRInt32 aAttrNameSpaceID,
|
|
nsIAtom* aAttribute,
|
|
nsStyleChangeList& aChangeList,
|
|
PRInt32 aMinChange,
|
|
PRInt32& aResultChange)
|
|
{
|
|
nsIStyleContext* oldContext = nsnull;
|
|
nsresult result = aFrame->GetStyleContext(&oldContext);
|
|
if (NS_SUCCEEDED(result) && oldContext) {
|
|
nsIAtom* pseudoTag = nsnull;
|
|
oldContext->GetPseudoType(pseudoTag);
|
|
nsIContent* localContent = nsnull;
|
|
nsIContent* content = nsnull;
|
|
result = aFrame->GetContent(&localContent);
|
|
if (NS_SUCCEEDED(result) && localContent) {
|
|
content = localContent;
|
|
}
|
|
else {
|
|
content = aParentContent;
|
|
}
|
|
if (aParentContent && aAttribute) { // attribute came from parent, we don't care about it here when recursing
|
|
nsFrameState frameState;
|
|
aFrame->GetFrameState(&frameState);
|
|
if (0 == (frameState & NS_FRAME_GENERATED_CONTENT)) { // keep it for generated content
|
|
aAttribute = nsnull;
|
|
}
|
|
}
|
|
|
|
// do primary context
|
|
nsIStyleContext* newContext = nsnull;
|
|
if (pseudoTag) {
|
|
aPresContext->ResolvePseudoStyleContextFor(content, pseudoTag, aParentContext, PR_FALSE,
|
|
&newContext);
|
|
NS_RELEASE(pseudoTag);
|
|
}
|
|
else {
|
|
NS_ASSERTION(localContent, "non pseudo-element frame without content node");
|
|
aPresContext->ResolveStyleContextFor(content, aParentContext, PR_FALSE, &newContext);
|
|
}
|
|
NS_ASSERTION(newContext, "failed to get new style context");
|
|
if (newContext) {
|
|
if (newContext != oldContext) {
|
|
aMinChange = CaptureChange(oldContext, newContext, aFrame, content, aChangeList, aMinChange);
|
|
if (aMinChange < NS_STYLE_HINT_FRAMECHANGE) { // if frame gets regenerated, let it keep old context
|
|
aFrame->SetStyleContext(aPresContext, newContext);
|
|
}
|
|
}
|
|
else {
|
|
oldContext->RemapStyle(aPresContext, PR_FALSE);
|
|
if (aAttribute && (aMinChange < NS_STYLE_HINT_REFLOW) &&
|
|
HasAttributeContent(oldContext, aAttrNameSpaceID, aAttribute)) {
|
|
aChangeList.AppendChange(aFrame, content, NS_STYLE_HINT_REFLOW);
|
|
}
|
|
}
|
|
NS_RELEASE(oldContext);
|
|
}
|
|
else {
|
|
NS_ERROR("resolve style context failed");
|
|
newContext = oldContext; // new context failed, recover... (take ref)
|
|
}
|
|
|
|
// do additional contexts
|
|
PRInt32 contextIndex = -1;
|
|
while (1 == 1) {
|
|
nsIStyleContext* oldExtraContext = nsnull;
|
|
result = aFrame->GetAdditionalStyleContext(++contextIndex, &oldExtraContext);
|
|
if (NS_SUCCEEDED(result)) {
|
|
if (oldExtraContext) {
|
|
nsIStyleContext* newExtraContext = nsnull;
|
|
oldExtraContext->GetPseudoType(pseudoTag);
|
|
NS_ASSERTION(pseudoTag, "extra style context is not pseudo element");
|
|
result = aPresContext->ResolvePseudoStyleContextFor(content, pseudoTag, newContext,
|
|
PR_FALSE, &newExtraContext);
|
|
NS_RELEASE(pseudoTag);
|
|
if (NS_SUCCEEDED(result) && newExtraContext) {
|
|
if (oldExtraContext != newExtraContext) {
|
|
aMinChange = CaptureChange(oldExtraContext, newExtraContext, aFrame,
|
|
content, aChangeList, aMinChange);
|
|
if (aMinChange < NS_STYLE_HINT_FRAMECHANGE) {
|
|
aFrame->SetAdditionalStyleContext(contextIndex, newExtraContext);
|
|
}
|
|
}
|
|
else {
|
|
oldExtraContext->RemapStyle(aPresContext, PR_FALSE);
|
|
if (aAttribute && (aMinChange < NS_STYLE_HINT_REFLOW) &&
|
|
HasAttributeContent(oldContext, aAttrNameSpaceID, aAttribute)) {
|
|
aChangeList.AppendChange(aFrame, content, NS_STYLE_HINT_REFLOW);
|
|
}
|
|
}
|
|
NS_RELEASE(newExtraContext);
|
|
}
|
|
NS_RELEASE(oldExtraContext);
|
|
}
|
|
}
|
|
else {
|
|
break;
|
|
}
|
|
}
|
|
|
|
// now look for undisplayed child content and pseudos
|
|
if (localContent && mUndisplayedMap) {
|
|
UndisplayedNode* undisplayed = mUndisplayedMap->GetFirstNode(localContent);
|
|
while (undisplayed) {
|
|
nsIStyleContext* undisplayedContext = nsnull;
|
|
if (undisplayed->mContent) { // child content
|
|
aPresContext->ResolveStyleContextFor(undisplayed->mContent, newContext,
|
|
PR_FALSE, &undisplayedContext);
|
|
}
|
|
else { // pseudo element
|
|
undisplayed->mStyle->GetPseudoType(pseudoTag);
|
|
NS_ASSERTION(pseudoTag, "pseudo element without tag");
|
|
aPresContext->ResolvePseudoStyleContextFor(localContent, pseudoTag, newContext, PR_FALSE,
|
|
&undisplayedContext);
|
|
NS_RELEASE(pseudoTag);
|
|
}
|
|
if (undisplayedContext) {
|
|
if (undisplayedContext == undisplayed->mStyle) {
|
|
undisplayedContext->RemapStyle(aPresContext);
|
|
}
|
|
const nsStyleDisplay* display =
|
|
(const nsStyleDisplay*)undisplayedContext->GetStyleData(eStyleStruct_Display);
|
|
if (display->mDisplay != NS_STYLE_DISPLAY_NONE) {
|
|
aChangeList.AppendChange(nsnull, ((undisplayed->mContent) ? undisplayed->mContent : localContent),
|
|
NS_STYLE_HINT_FRAMECHANGE);
|
|
}
|
|
NS_RELEASE(undisplayedContext);
|
|
}
|
|
undisplayed = undisplayed->mNext;
|
|
}
|
|
}
|
|
|
|
aResultChange = aMinChange;
|
|
|
|
// now do children
|
|
PRInt32 listIndex = 0;
|
|
nsIAtom* childList = nsnull;
|
|
PRInt32 childChange;
|
|
nsIFrame* child;
|
|
nsIAtom* frameType = nsnull;
|
|
|
|
do {
|
|
child = nsnull;
|
|
result = aFrame->FirstChild(childList, &child);
|
|
while ((NS_SUCCEEDED(result)) && (child)) {
|
|
nsFrameState state;
|
|
child->GetFrameState(&state);
|
|
if (NS_FRAME_OUT_OF_FLOW != (state & NS_FRAME_OUT_OF_FLOW)) {
|
|
// only do frames that are in flow
|
|
child->GetFrameType(&frameType);
|
|
if (nsLayoutAtoms::placeholderFrame == frameType) { // placeholder
|
|
// get out of flow frame and recurse there
|
|
nsIFrame* outOfFlowFrame = ((nsPlaceholderFrame*)child)->GetOutOfFlowFrame();
|
|
NS_ASSERTION(outOfFlowFrame, "no out-of-flow frame");
|
|
|
|
ReResolveStyleContext(aPresContext, outOfFlowFrame, newContext, content,
|
|
aAttrNameSpaceID, aAttribute,
|
|
aChangeList, aMinChange, childChange);
|
|
|
|
// reresolve placeholder's context under out of flow frame
|
|
nsIStyleContext* outOfFlowContext;
|
|
outOfFlowFrame->GetStyleContext(&outOfFlowContext);
|
|
ReResolveStyleContext(aPresContext, child, outOfFlowContext, content,
|
|
kNameSpaceID_Unknown, nsnull,
|
|
aChangeList, aMinChange, childChange);
|
|
NS_RELEASE(outOfFlowContext);
|
|
}
|
|
else { // regular child frame
|
|
ReResolveStyleContext(aPresContext, child, newContext, content,
|
|
aAttrNameSpaceID, aAttribute,
|
|
aChangeList, aMinChange, childChange);
|
|
}
|
|
}
|
|
child->GetNextSibling(&child);
|
|
}
|
|
|
|
NS_IF_RELEASE(childList);
|
|
aFrame->GetAdditionalChildListName(listIndex++, &childList);
|
|
} while (childList);
|
|
// XXX need to do overflow frames???
|
|
|
|
NS_RELEASE(newContext);
|
|
NS_IF_RELEASE(localContent);
|
|
}
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
FrameManager::ComputeStyleChangeFor(nsIPresContext* aPresContext,
|
|
nsIFrame* aFrame,
|
|
PRInt32 aAttrNameSpaceID,
|
|
nsIAtom* aAttribute,
|
|
nsStyleChangeList& aChangeList,
|
|
PRInt32 aMinChange,
|
|
PRInt32& aTopLevelChange)
|
|
{
|
|
aTopLevelChange = NS_STYLE_HINT_NONE;
|
|
nsIFrame* frame = aFrame;
|
|
|
|
do {
|
|
nsIStyleContext* styleContext = nsnull;
|
|
frame->GetStyleContext(&styleContext);
|
|
nsIStyleContext* parentContext = styleContext->GetParent();
|
|
PRInt32 frameChange;
|
|
ReResolveStyleContext(aPresContext, frame, parentContext, nsnull,
|
|
aAttrNameSpaceID, aAttribute,
|
|
aChangeList, aMinChange, frameChange);
|
|
#ifdef NS_DEBUG
|
|
VerifyStyleTree(frame, parentContext);
|
|
#endif
|
|
NS_IF_RELEASE(parentContext);
|
|
NS_RELEASE(styleContext);
|
|
if (aTopLevelChange < frameChange) {
|
|
aTopLevelChange = frameChange;
|
|
}
|
|
|
|
frame->GetNextInFlow(&frame);
|
|
} while (frame);
|
|
return NS_OK;
|
|
}
|
|
|
|
|
|
static nsresult
|
|
CaptureFrameStateFor(nsIPresContext* aPresContext, nsIFrame* aFrame, nsILayoutHistoryState* aState)
|
|
{
|
|
nsresult rv = NS_OK;
|
|
NS_PRECONDITION(nsnull != aFrame && nsnull != aState, "null parameters passed in");
|
|
|
|
// See if the frame is stateful.
|
|
// Frames are not ref-counted so no addref/release is required on statefulFrame.
|
|
nsIStatefulFrame* statefulFrame = nsnull;
|
|
aFrame->QueryInterface(nsIStatefulFrame::GetIID(), (void**) &statefulFrame);
|
|
if (nsnull != statefulFrame) {
|
|
// If so, get the content ID, state type and the state and
|
|
// add an association between (ID, type) and (state) to the
|
|
// history state storage object, aState.
|
|
nsCOMPtr<nsIContent> content;
|
|
rv = aFrame->GetContent(getter_AddRefs(content));
|
|
if (NS_SUCCEEDED(rv)) {
|
|
PRUint32 ID;
|
|
rv = content->GetContentID(&ID);
|
|
if (NS_SUCCEEDED(rv) && ID) { // Must have ID (don't do anonymous content)
|
|
nsIStatefulFrame::StateType type = nsIStatefulFrame::eNoType;
|
|
rv = statefulFrame->GetStateType(aPresContext, &type);
|
|
if (NS_SUCCEEDED(rv)) {
|
|
nsCOMPtr<nsISupports> frameState;
|
|
rv = statefulFrame->SaveState(aPresContext, getter_AddRefs(frameState));
|
|
if (NS_SUCCEEDED(rv)) {
|
|
rv = aState->AddState(ID, frameState, type);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
return rv;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
FrameManager::CaptureFrameState(nsIPresContext* aPresContext, nsIFrame* aFrame, nsILayoutHistoryState* aState)
|
|
{
|
|
nsresult rv = NS_OK;
|
|
NS_PRECONDITION(nsnull != aFrame && nsnull != aState, "null parameters passed in");
|
|
|
|
rv = CaptureFrameStateFor(aPresContext, aFrame, aState);
|
|
|
|
// Now capture state recursively for the frame hierarchy rooted at aFrame
|
|
nsIAtom* childListName = nsnull;
|
|
PRInt32 childListIndex = 0;
|
|
do {
|
|
nsIFrame* childFrame;
|
|
aFrame->FirstChild(childListName, &childFrame);
|
|
while (childFrame) {
|
|
rv = CaptureFrameState(aPresContext, childFrame, aState);
|
|
// Get the next sibling child frame
|
|
childFrame->GetNextSibling(&childFrame);
|
|
}
|
|
NS_IF_RELEASE(childListName);
|
|
aFrame->GetAdditionalChildListName(childListIndex++, &childListName);
|
|
} while (childListName);
|
|
|
|
return rv;
|
|
}
|
|
|
|
static nsresult
|
|
RestoreFrameStateFor(nsIPresContext* aPresContext, nsIFrame* aFrame, nsILayoutHistoryState* aState)
|
|
{
|
|
nsresult rv = NS_OK;
|
|
NS_PRECONDITION(nsnull != aFrame && nsnull != aState, "null parameters passed in");
|
|
|
|
// See if the frame is stateful.
|
|
// Frames are not ref-counted so no addref/release is required on statefulFrame.
|
|
nsIStatefulFrame* statefulFrame = nsnull;
|
|
aFrame->QueryInterface(nsIStatefulFrame::GetIID(), (void**) &statefulFrame);
|
|
if (nsnull != statefulFrame) {
|
|
// If so, get the content ID, state type and the frame state and
|
|
// ask the frame object to restore its state.
|
|
nsCOMPtr<nsIContent> content;
|
|
rv = aFrame->GetContent(getter_AddRefs(content));
|
|
if (NS_SUCCEEDED(rv)) {
|
|
PRUint32 ID;
|
|
rv = content->GetContentID(&ID);
|
|
if (NS_SUCCEEDED(rv) && ID) { // Must have ID (don't do anonymous content)
|
|
nsIStatefulFrame::StateType type = nsIStatefulFrame::eNoType;
|
|
rv = statefulFrame->GetStateType(aPresContext, &type);
|
|
if (NS_SUCCEEDED(rv)) {
|
|
nsISupports* frameState = nsnull;
|
|
rv = aState->GetState(ID, &frameState, type);
|
|
if (NS_SUCCEEDED(rv) && nsnull != frameState) {
|
|
rv = statefulFrame->RestoreState(aPresContext, frameState);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
return rv;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
FrameManager::RestoreFrameState(nsIPresContext* aPresContext, nsIFrame* aFrame, nsILayoutHistoryState* aState)
|
|
{
|
|
nsresult rv = NS_OK;
|
|
NS_PRECONDITION(nsnull != aFrame && nsnull != aState, "null parameters passed in");
|
|
|
|
rv = RestoreFrameStateFor(aPresContext, aFrame, aState);
|
|
|
|
// Now restore state recursively for the frame hierarchy rooted at aFrame
|
|
nsIAtom* childListName = nsnull;
|
|
PRInt32 childListIndex = 0;
|
|
do {
|
|
nsIFrame* childFrame;
|
|
aFrame->FirstChild(childListName, &childFrame);
|
|
while (childFrame) {
|
|
rv = RestoreFrameState(aPresContext, childFrame, aState);
|
|
// Get the next sibling child frame
|
|
childFrame->GetNextSibling(&childFrame);
|
|
}
|
|
NS_IF_RELEASE(childListName);
|
|
aFrame->GetAdditionalChildListName(childListIndex++, &childListName);
|
|
} while (childListName);
|
|
|
|
return rv;
|
|
}
|
|
|
|
//----------------------------------------------------------------------
|
|
|
|
static PLHashNumber
|
|
HashKey(void* key)
|
|
{
|
|
return (PLHashNumber)key;
|
|
}
|
|
|
|
static PRIntn
|
|
CompareKeys(void* key1, void* key2)
|
|
{
|
|
return key1 == key2;
|
|
}
|
|
|
|
MOZ_DECL_CTOR_COUNTER(FrameHashTable);
|
|
|
|
FrameHashTable::FrameHashTable(PRUint32 aNumBuckets)
|
|
{
|
|
MOZ_COUNT_CTOR(FrameHashTable);
|
|
mTable = PL_NewHashTable(aNumBuckets, (PLHashFunction)HashKey,
|
|
(PLHashComparator)CompareKeys,
|
|
(PLHashComparator)nsnull,
|
|
nsnull, nsnull);
|
|
}
|
|
|
|
FrameHashTable::~FrameHashTable()
|
|
{
|
|
MOZ_COUNT_DTOR(FrameHashTable);
|
|
PL_HashTableDestroy(mTable);
|
|
}
|
|
|
|
void*
|
|
FrameHashTable::Get(void* aKey)
|
|
{
|
|
PRInt32 hashCode = (PRInt32) aKey;
|
|
PLHashEntry** hep = PL_HashTableRawLookup(mTable, hashCode, aKey);
|
|
PLHashEntry* he = *hep;
|
|
if (he) {
|
|
return he->value;
|
|
}
|
|
return nsnull;
|
|
}
|
|
|
|
void*
|
|
FrameHashTable::Put(void* aKey, void* aData)
|
|
{
|
|
PRInt32 hashCode = (PRInt32) aKey;
|
|
PLHashEntry** hep = PL_HashTableRawLookup(mTable, hashCode, aKey);
|
|
PLHashEntry* he = *hep;
|
|
if (he) {
|
|
void* oldValue = he->value;
|
|
he->value = aData;
|
|
return oldValue;
|
|
}
|
|
PL_HashTableRawAdd(mTable, hep, hashCode, aKey, aData);
|
|
return nsnull;
|
|
}
|
|
|
|
void*
|
|
FrameHashTable::Remove(void* aKey)
|
|
{
|
|
PRInt32 hashCode = (PRInt32) aKey;
|
|
PLHashEntry** hep = PL_HashTableRawLookup(mTable, hashCode, aKey);
|
|
PLHashEntry* he = *hep;
|
|
void* oldValue = nsnull;
|
|
if (he) {
|
|
oldValue = he->value;
|
|
PL_HashTableRawRemove(mTable, hep, he);
|
|
}
|
|
return oldValue;
|
|
}
|
|
|
|
static PRIntn
|
|
RemoveEntry(PLHashEntry* he, PRIntn i, void* arg)
|
|
{
|
|
// Remove and free this entry and continue enumerating
|
|
return HT_ENUMERATE_REMOVE | HT_ENUMERATE_NEXT;
|
|
}
|
|
|
|
void
|
|
FrameHashTable::Clear()
|
|
{
|
|
PL_HashTableEnumerateEntries(mTable, RemoveEntry, 0);
|
|
}
|
|
|
|
#ifdef NS_DEBUG
|
|
static PRIntn
|
|
EnumEntries(PLHashEntry* he, PRIntn i, void* arg)
|
|
{
|
|
// Continue enumerating
|
|
return HT_ENUMERATE_NEXT;
|
|
}
|
|
|
|
void
|
|
FrameHashTable::Dump(FILE* fp)
|
|
{
|
|
PL_HashTableDump(mTable, EnumEntries, fp);
|
|
}
|
|
#endif
|
|
|
|
void
|
|
FrameManager::DestroyPropertyList(nsIPresContext* aPresContext)
|
|
{
|
|
if (mPropertyList) {
|
|
while (mPropertyList) {
|
|
PropertyList* tmp = mPropertyList;
|
|
|
|
mPropertyList = mPropertyList->mNext;
|
|
tmp->RemoveAllProperties(aPresContext);
|
|
delete tmp;
|
|
}
|
|
}
|
|
}
|
|
|
|
FrameManager::PropertyList*
|
|
FrameManager::GetPropertyListFor(nsIAtom* aPropertyName) const
|
|
{
|
|
PropertyList* result;
|
|
|
|
for (result = mPropertyList; result; result = result->mNext) {
|
|
if (result->mName.get() == aPropertyName) {
|
|
break;
|
|
}
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
void
|
|
FrameManager::RemoveAllPropertiesFor(nsIPresContext* aPresContext,
|
|
nsIFrame* aFrame)
|
|
{
|
|
for (PropertyList* prop = mPropertyList; prop; prop = prop->mNext) {
|
|
prop->RemovePropertyForFrame(aPresContext, aFrame);
|
|
}
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
FrameManager::GetFrameProperty(nsIFrame* aFrame,
|
|
nsIAtom* aPropertyName,
|
|
PRUint32 aOptions,
|
|
void** aPropertyValue)
|
|
{
|
|
NS_ENSURE_ARG_POINTER(aPropertyName);
|
|
PropertyList* propertyList = GetPropertyListFor(aPropertyName);
|
|
nsresult result;
|
|
|
|
if (propertyList) {
|
|
result = propertyList->mFrameValueMap->Search(aFrame, aOptions, aPropertyValue);
|
|
|
|
} else {
|
|
*aPropertyValue = 0;
|
|
result = NS_IFRAME_MGR_PROP_NOT_THERE;
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
FrameManager::SetFrameProperty(nsIFrame* aFrame,
|
|
nsIAtom* aPropertyName,
|
|
void* aPropertyValue,
|
|
NSFMPropertyDtorFunc aPropDtorFunc)
|
|
{
|
|
NS_ENSURE_ARG_POINTER(aPropertyName);
|
|
PropertyList* propertyList = GetPropertyListFor(aPropertyName);
|
|
nsresult result = NS_OK;
|
|
|
|
if (propertyList) {
|
|
// Make sure the dtor function matches
|
|
if (aPropDtorFunc != propertyList->mDtorFunc) {
|
|
return NS_ERROR_INVALID_ARG;
|
|
}
|
|
|
|
} else {
|
|
propertyList = new PropertyList(aPropertyName, aPropDtorFunc, mDSTNodeArena);
|
|
if (!propertyList) {
|
|
return NS_ERROR_OUT_OF_MEMORY;
|
|
}
|
|
|
|
propertyList->mNext = mPropertyList;
|
|
mPropertyList = propertyList;
|
|
}
|
|
|
|
// The current property value (if there is one) is replaced and the current
|
|
// value is destroyed
|
|
void* oldValue;
|
|
result = propertyList->mFrameValueMap->Insert(aFrame, aPropertyValue, &oldValue);
|
|
if (NS_DST_VALUE_OVERWRITTEN == result) {
|
|
if (propertyList->mDtorFunc) {
|
|
nsCOMPtr<nsIPresContext> presContext;
|
|
mPresShell->GetPresContext(getter_AddRefs(presContext));
|
|
|
|
propertyList->mDtorFunc(presContext, aFrame, aPropertyName, oldValue);
|
|
}
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
FrameManager::RemoveFrameProperty(nsIFrame* aFrame,
|
|
nsIAtom* aPropertyName)
|
|
{
|
|
NS_ENSURE_ARG_POINTER(aPropertyName);
|
|
PropertyList* propertyList = GetPropertyListFor(aPropertyName);
|
|
nsresult result = NS_IFRAME_MGR_PROP_NOT_THERE;
|
|
|
|
if (propertyList) {
|
|
nsCOMPtr<nsIPresContext> presContext;
|
|
mPresShell->GetPresContext(getter_AddRefs(presContext));
|
|
|
|
if (propertyList->RemovePropertyForFrame(presContext, aFrame)) {
|
|
result = NS_OK;
|
|
}
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
//----------------------------------------------------------------------
|
|
|
|
MOZ_DECL_CTOR_COUNTER(UndisplayedMap);
|
|
|
|
UndisplayedMap::UndisplayedMap(PRUint32 aNumBuckets)
|
|
{
|
|
MOZ_COUNT_CTOR(UndisplayedMap);
|
|
mTable = PL_NewHashTable(aNumBuckets, (PLHashFunction)HashKey,
|
|
(PLHashComparator)CompareKeys,
|
|
(PLHashComparator)nsnull,
|
|
nsnull, nsnull);
|
|
mLastLookup = nsnull;
|
|
}
|
|
|
|
UndisplayedMap::~UndisplayedMap(void)
|
|
{
|
|
MOZ_COUNT_DTOR(UndisplayedMap);
|
|
Clear();
|
|
PL_HashTableDestroy(mTable);
|
|
}
|
|
|
|
PLHashEntry**
|
|
UndisplayedMap::GetEntryFor(nsIContent* aParentContent)
|
|
{
|
|
if (mLastLookup && (aParentContent == (*mLastLookup)->key)) {
|
|
return mLastLookup;
|
|
}
|
|
PLHashNumber hashCode = (PLHashNumber)(void*)aParentContent;
|
|
PLHashEntry** entry = PL_HashTableRawLookup(mTable, hashCode, aParentContent);
|
|
if (*entry) {
|
|
mLastLookup = entry;
|
|
}
|
|
return entry;
|
|
}
|
|
|
|
UndisplayedNode*
|
|
UndisplayedMap::GetFirstNode(nsIContent* aParentContent)
|
|
{
|
|
PLHashEntry** entry = GetEntryFor(aParentContent);
|
|
if (*entry) {
|
|
return (UndisplayedNode*)((*entry)->value);
|
|
}
|
|
return nsnull;
|
|
}
|
|
|
|
nsresult
|
|
UndisplayedMap::AppendNodeFor(UndisplayedNode* aNode, nsIContent* aParentContent)
|
|
{
|
|
PLHashEntry** entry = GetEntryFor(aParentContent);
|
|
if (*entry) {
|
|
UndisplayedNode* node = (UndisplayedNode*)((*entry)->value);
|
|
while (node->mNext) {
|
|
NS_ASSERTION((node->mContent != aNode->mContent) ||
|
|
((node->mContent == nsnull) &&
|
|
(node->mStyle != aNode->mStyle)), "node in map twice");
|
|
node = node->mNext;
|
|
}
|
|
node->mNext = aNode;
|
|
}
|
|
else {
|
|
PLHashNumber hashCode = (PLHashNumber)(void*)aParentContent;
|
|
PL_HashTableRawAdd(mTable, entry, hashCode, aParentContent, aNode);
|
|
mLastLookup = nsnull; // hashtable may have shifted bucket out from under us
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult
|
|
UndisplayedMap::AddNodeFor(nsIContent* aParentContent, nsIContent* aChild,
|
|
nsIStyleContext* aStyle)
|
|
{
|
|
UndisplayedNode* node = new UndisplayedNode(aChild, aStyle);
|
|
if (! node) {
|
|
return NS_ERROR_OUT_OF_MEMORY;
|
|
}
|
|
return AppendNodeFor(node, aParentContent);
|
|
}
|
|
|
|
nsresult
|
|
UndisplayedMap::AddNodeFor(nsIContent* aParentContent, nsIStyleContext* aPseudoStyle)
|
|
{
|
|
UndisplayedNode* node = new UndisplayedNode(aPseudoStyle);
|
|
if (! node) {
|
|
return NS_ERROR_OUT_OF_MEMORY;
|
|
}
|
|
return AppendNodeFor(node, aParentContent);
|
|
}
|
|
|
|
nsresult
|
|
UndisplayedMap::RemoveNodeFor(nsIContent* aParentContent, UndisplayedNode* aNode)
|
|
{
|
|
PLHashEntry** entry = GetEntryFor(aParentContent);
|
|
NS_ASSERTION(*entry, "content not in map");
|
|
if (*entry) {
|
|
if ((UndisplayedNode*)((*entry)->value) == aNode) { // first node
|
|
if (aNode->mNext) {
|
|
(*entry)->value = aNode->mNext;
|
|
aNode->mNext = nsnull;
|
|
}
|
|
else {
|
|
PL_HashTableRawRemove(mTable, entry, *entry);
|
|
mLastLookup = nsnull; // hashtable may have shifted bucket out from under us
|
|
}
|
|
}
|
|
else {
|
|
UndisplayedNode* node = (UndisplayedNode*)((*entry)->value);
|
|
while (node->mNext) {
|
|
if (node->mNext == aNode) {
|
|
node->mNext = aNode->mNext;
|
|
aNode->mNext = nsnull;
|
|
break;
|
|
}
|
|
node = node->mNext;
|
|
}
|
|
}
|
|
}
|
|
delete aNode;
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult
|
|
UndisplayedMap::RemoveNodesFor(nsIContent* aParentContent)
|
|
{
|
|
PLHashEntry** entry = GetEntryFor(aParentContent);
|
|
NS_ASSERTION(entry, "content not in map");
|
|
if (*entry) {
|
|
UndisplayedNode* node = (UndisplayedNode*)((*entry)->value);
|
|
delete node;
|
|
if (entry == mLastLookup) {
|
|
mLastLookup = nsnull;
|
|
}
|
|
PL_HashTableRawRemove(mTable, entry, *entry);
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
static PRIntn
|
|
RemoveUndisplayedEntry(PLHashEntry* he, PRIntn i, void* arg)
|
|
{
|
|
UndisplayedNode* node = (UndisplayedNode*)(he->value);
|
|
delete node;
|
|
// Remove and free this entry and continue enumerating
|
|
return HT_ENUMERATE_REMOVE | HT_ENUMERATE_NEXT;
|
|
}
|
|
|
|
void
|
|
UndisplayedMap::Clear(void)
|
|
{
|
|
mLastLookup = nsnull;
|
|
PL_HashTableEnumerateEntries(mTable, RemoveUndisplayedEntry, 0);
|
|
}
|
|
|
|
//----------------------------------------------------------------------
|
|
|
|
FrameManager::PropertyList::PropertyList(nsIAtom* aName,
|
|
NSFMPropertyDtorFunc aDtorFunc,
|
|
nsDST::NodeArena* aDSTNodeArena)
|
|
: mName(aName), mFrameValueMap(new nsDST(aDSTNodeArena)),
|
|
mDtorFunc(aDtorFunc), mNext(nsnull)
|
|
{
|
|
}
|
|
|
|
FrameManager::PropertyList::~PropertyList()
|
|
{
|
|
delete mFrameValueMap;
|
|
}
|
|
|
|
class DestroyPropertyValuesFunctor : public nsDSTNodeFunctor {
|
|
public:
|
|
DestroyPropertyValuesFunctor(nsIPresContext* aPresContext,
|
|
nsIAtom* aPropertyName,
|
|
NSFMPropertyDtorFunc aDtorFunc)
|
|
: mPresContext(aPresContext), mPropertyName(aPropertyName), mDtorFunc(aDtorFunc) {}
|
|
|
|
virtual void operator () (void *aKey, void *aValue) {
|
|
mDtorFunc(mPresContext, (nsIFrame*)aKey, mPropertyName, aValue);
|
|
}
|
|
|
|
nsIPresContext* mPresContext;
|
|
nsIAtom* mPropertyName;
|
|
NSFMPropertyDtorFunc mDtorFunc;
|
|
};
|
|
|
|
void
|
|
FrameManager::PropertyList::RemoveAllProperties(nsIPresContext* aPresContext)
|
|
{
|
|
if (mDtorFunc) {
|
|
DestroyPropertyValuesFunctor functor(aPresContext, mName, mDtorFunc);
|
|
|
|
// Enumerate any remaining frame/value pairs and destroy the value object
|
|
mFrameValueMap->Enumerate(functor);
|
|
}
|
|
}
|
|
|
|
PRBool
|
|
FrameManager::PropertyList::RemovePropertyForFrame(nsIPresContext* aPresContext,
|
|
nsIFrame* aFrame)
|
|
{
|
|
void* value;
|
|
nsresult result;
|
|
|
|
// If the property exists, then we need to run the dtor function so
|
|
// do a search with the option to remove the key/value pair
|
|
result = mFrameValueMap->Search(aFrame, NS_DST_REMOVE_KEY_VALUE, &value);
|
|
|
|
if (NS_OK == result) {
|
|
// The property was set
|
|
if (mDtorFunc) {
|
|
// Destroy the property value
|
|
mDtorFunc(aPresContext, aFrame, mName, value);
|
|
}
|
|
|
|
return PR_TRUE;
|
|
}
|
|
|
|
return PR_FALSE;
|
|
}
|
|
|