mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-10-16 14:55:47 +00:00
dfd7b5d559
- Added capture/restore frame state methods to nsIFrameManager - Added a getter for state type to nsIStatefulFrame. - Changed the save/restore method parameters in nsIStateful frame so that only the frame state gets passed to the stateful frame. - Implemented all the new interface methods in the respective implementation classes.
766 lines
22 KiB
C++
766 lines
22 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 License
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* Version 1.0 (the "NPL"); you may not use this file except in
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* compliance with the NPL. You may obtain a copy of the NPL at
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* http://www.mozilla.org/NPL/
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*
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* Software distributed under the NPL is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
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* for the specific language governing rights and limitations under the
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* NPL.
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*
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* The Initial Developer of this code under the NPL is Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 1998 Netscape Communications Corporation. All Rights
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* Reserved.
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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 "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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#ifdef NS_DEBUG
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#include "nsLayoutAtoms.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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// 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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//----------------------------------------------------------------------
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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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// 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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// 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 CaptureFrameState(nsIFrame* aFrame, nsILayoutHistoryState* aState);
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NS_IMETHOD RestoreFrameState(nsIFrame* aFrame, nsILayoutHistoryState* aState);
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private:
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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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nsDST* mPrimaryFrameMap;
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FrameHashTable* mPlaceholderMap;
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CantRenderReplacedElementEvent* mPostedEvents;
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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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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_PRECONDITION(nsnull != aInstancePtrResult, "null ptr");
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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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}
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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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// Revoke any events posted to the event queue that we haven't processed yet
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RevokePostedEvents();
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delete mPrimaryFrameMap;
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delete mPlaceholderMap;
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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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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_PRECONDITION(aResult, "null ptr");
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NS_PRECONDITION(aContent, "no content object");
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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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*aResult = (nsIFrame*)mPrimaryFrameMap->Search(aContent);
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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_PRECONDITION(aContent, "no content object");
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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;
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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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nsIFrame* oldPrimaryFrame;
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oldPrimaryFrame = (nsIFrame*)mPrimaryFrameMap->Insert(aContent, (void*)aPrimaryFrame);
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#ifdef NS_DEBUG
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if (oldPrimaryFrame && (oldPrimaryFrame != aPrimaryFrame)) {
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NS_WARNING("overwriting current primary frame");
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}
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#endif
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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_PRECONDITION(aResult, "null ptr");
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NS_PRECONDITION(aFrame, "no frame");
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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_PRECONDITION(aFrame, "no frame");
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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
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FrameManager::ClearPlaceholderFrameMap()
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{
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if (mPlaceholderMap) {
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mPlaceholderMap->Clear();
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}
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return NS_OK;
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}
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//----------------------------------------------------------------------
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NS_IMETHODIMP
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FrameManager::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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{
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return aParentFrame->AppendFrames(aPresContext, aPresShell, aListName,
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aFrameList);
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}
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NS_IMETHODIMP
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FrameManager::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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{
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return aParentFrame->InsertFrames(aPresContext, aPresShell, aListName,
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aPrevFrame, aFrameList);
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}
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NS_IMETHODIMP
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FrameManager::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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{
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return aParentFrame->RemoveFrame(aPresContext, aPresShell, aListName,
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aOldFrame);
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}
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NS_IMETHODIMP
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FrameManager::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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{
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return aParentFrame->ReplaceFrame(aPresContext, aPresShell, aListName,
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aOldFrame, aNewFrame);
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}
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//----------------------------------------------------------------------
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NS_IMETHODIMP
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FrameManager::NotifyDestroyingFrame(nsIFrame* aFrame)
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{
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// Dequeue and destroy and posted events for this frame
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DequeuePostedEventFor(aFrame);
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return NS_OK;
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}
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void
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FrameManager::RevokePostedEvents()
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{
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if (mPostedEvents) {
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mPostedEvents = nsnull;
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// Revoke any events in the event queue that are owned by us
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nsIEventQueueService* eventService;
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nsresult rv;
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rv = nsServiceManager::GetService(kEventQueueServiceCID,
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kIEventQueueServiceIID,
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(nsISupports **)&eventService);
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if (NS_SUCCEEDED(rv)) {
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nsCOMPtr<nsIEventQueue> eventQueue;
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rv = eventService->GetThreadEventQueue(PR_GetCurrentThread(),
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getter_AddRefs(eventQueue));
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nsServiceManager::ReleaseService(kEventQueueServiceCID, eventService);
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if (NS_SUCCEEDED(rv) && eventQueue) {
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eventQueue->RevokeEvents(this);
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}
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}
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}
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}
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CantRenderReplacedElementEvent**
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FrameManager::FindPostedEventFor(nsIFrame* aFrame)
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{
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CantRenderReplacedElementEvent** event = &mPostedEvents;
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while (*event) {
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if ((*event)->mFrame == aFrame) {
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return event;
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}
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event = &(*event)->mNext;
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}
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return event;
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}
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void
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FrameManager::DequeuePostedEventFor(nsIFrame* aFrame)
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{
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// If there's a posted event for this frame, then remove it
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CantRenderReplacedElementEvent** event = FindPostedEventFor(aFrame);
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if (*event) {
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CantRenderReplacedElementEvent* tmp = *event;
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// Remove it from our linked list of posted events
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*event = (*event)->mNext;
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// Dequeue it from the event queue
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nsIEventQueueService* eventService;
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nsresult rv;
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rv = nsServiceManager::GetService(kEventQueueServiceCID,
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kIEventQueueServiceIID,
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(nsISupports **)&eventService);
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if (NS_SUCCEEDED(rv)) {
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nsCOMPtr<nsIEventQueue> eventQueue;
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rv = eventService->GetThreadEventQueue(PR_GetCurrentThread(),
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getter_AddRefs(eventQueue));
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nsServiceManager::ReleaseService(kEventQueueServiceCID, eventService);
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if (NS_SUCCEEDED(rv) && eventQueue) {
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PLEventQueue* plqueue;
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eventQueue->GetPLEventQueue(&plqueue);
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if (plqueue) {
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// Removes the event and destroys it
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PL_DequeueEvent(tmp, plqueue);
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}
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}
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}
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}
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}
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|
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void
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FrameManager::HandlePLEvent(CantRenderReplacedElementEvent* aEvent)
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{
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FrameManager* frameManager = (FrameManager*)aEvent->owner;
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// Remove the posted event from the linked list
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CantRenderReplacedElementEvent** events = &frameManager->mPostedEvents;
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while (*events) {
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if (*events == aEvent) {
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*events = (*events)->mNext;
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break;
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} else {
|
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events = &(*events)->mNext;
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}
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}
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|
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// Notify the style system and then process any reflow commands that
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// are generated
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nsCOMPtr<nsIPresContext> presContext;
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frameManager->mPresShell->GetPresContext(getter_AddRefs(presContext));
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frameManager->mStyleSet->CantRenderReplacedElement(presContext, aEvent->mFrame);
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frameManager->mPresShell->ProcessReflowCommands();
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}
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|
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void
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FrameManager::DestroyPLEvent(CantRenderReplacedElementEvent* aEvent)
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{
|
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delete aEvent;
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}
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CantRenderReplacedElementEvent::CantRenderReplacedElementEvent(FrameManager* aFrameManager,
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nsIFrame* aFrame)
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{
|
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// Note: because the frame manager owns us we don't hold a reference to the
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// frame manager
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PL_InitEvent(this, aFrameManager, (PLHandleEventProc)&FrameManager::HandlePLEvent,
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(PLDestroyEventProc)&FrameManager::DestroyPLEvent);
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mFrame = aFrame;
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}
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NS_IMETHODIMP
|
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FrameManager::CantRenderReplacedElement(nsIPresContext* aPresContext,
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nsIFrame* aFrame)
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{
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nsIEventQueueService* eventService;
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nsresult rv;
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|
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// We need to notify the style stystem, but post the notification so it
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// doesn't happen now
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rv = nsServiceManager::GetService(kEventQueueServiceCID,
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kIEventQueueServiceIID,
|
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(nsISupports **)&eventService);
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if (NS_SUCCEEDED(rv)) {
|
|
nsCOMPtr<nsIEventQueue> eventQueue;
|
|
rv = eventService->GetThreadEventQueue(PR_GetCurrentThread(),
|
|
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;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
FrameManager::CaptureFrameState(nsIFrame* aFrame, nsILayoutHistoryState* aState)
|
|
{
|
|
nsresult rv = NS_OK;
|
|
NS_PRECONDITION(nsnull != aFrame && nsnull != aState, "null parameters passed in");
|
|
|
|
// See if the frame is stateful.
|
|
nsCOMPtr<nsIStatefulFrame> statefulFrame = do_QueryInterface(aFrame);
|
|
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)) {
|
|
PRInt32 type = NS_HISTORY_STATE_TYPE_NONE;
|
|
rv = statefulFrame->GetStateType(&type);
|
|
if (NS_SUCCEEDED(rv)) {
|
|
nsISupports* frameState;
|
|
rv = statefulFrame->SaveState(&frameState);
|
|
if (NS_SUCCEEDED(rv)) {
|
|
rv = aState->AddState(ID, frameState, type);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// XXX We are only going through the principal child list right now.
|
|
// Need to talk to Troy to find out about other kinds of
|
|
// child lists and whether they will contain stateful frames.
|
|
|
|
// Capture frame state for the first child
|
|
nsIFrame* child = nsnull;
|
|
rv = aFrame->FirstChild(nsnull, &child);
|
|
if (NS_SUCCEEDED(rv) && nsnull != child) {
|
|
rv = CaptureFrameState(child, aState);
|
|
}
|
|
|
|
// Capture frame state for the next sibling
|
|
nsIFrame* sibling = nsnull;
|
|
rv = aFrame->GetNextSibling(&sibling);
|
|
if (NS_SUCCEEDED(rv) && nsnull != sibling) {
|
|
rv = CaptureFrameState(sibling, aState);
|
|
}
|
|
|
|
return rv;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
FrameManager::RestoreFrameState(nsIFrame* aFrame, nsILayoutHistoryState* aState)
|
|
{
|
|
nsresult rv = NS_OK;
|
|
NS_PRECONDITION(nsnull != aFrame && nsnull != aState, "null parameters passed in");
|
|
|
|
// See if the frame is stateful.
|
|
nsCOMPtr<nsIStatefulFrame> statefulFrame = do_QueryInterface(aFrame);
|
|
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)) {
|
|
PRInt32 type = NS_HISTORY_STATE_TYPE_NONE;
|
|
rv = statefulFrame->GetStateType(&type);
|
|
if (NS_SUCCEEDED(rv)) {
|
|
nsISupports* frameState = nsnull;
|
|
rv = aState->GetState(ID, &frameState, type);
|
|
if (NS_SUCCEEDED(rv) && nsnull != frameState) {
|
|
rv = statefulFrame->RestoreState(frameState);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// XXX We are only going through the principal child list right now.
|
|
// Need to talk to Troy to find out about other kinds of
|
|
// child lists and whether they will contain stateful frames.
|
|
|
|
// Capture frame state for the first child
|
|
nsIFrame* child = nsnull;
|
|
rv = aFrame->FirstChild(nsnull, &child);
|
|
if (NS_SUCCEEDED(rv) && nsnull != child) {
|
|
rv = RestoreFrameState(child, aState);
|
|
}
|
|
|
|
// Capture frame state for the next sibling
|
|
nsIFrame* sibling = nsnull;
|
|
rv = aFrame->GetNextSibling(&sibling);
|
|
if (NS_SUCCEEDED(rv) && nsnull != sibling) {
|
|
rv = RestoreFrameState(sibling, aState);
|
|
}
|
|
|
|
return rv;
|
|
}
|
|
|
|
//----------------------------------------------------------------------
|
|
|
|
static PLHashNumber
|
|
HashKey(void* key)
|
|
{
|
|
return (PLHashNumber)key;
|
|
}
|
|
|
|
static PRIntn
|
|
CompareKeys(void* key1, void* key2)
|
|
{
|
|
return key1 == key2;
|
|
}
|
|
|
|
FrameHashTable::FrameHashTable(PRUint32 aNumBuckets)
|
|
{
|
|
mTable = PL_NewHashTable(aNumBuckets, (PLHashFunction)HashKey,
|
|
(PLHashComparator)CompareKeys,
|
|
(PLHashComparator)nsnull,
|
|
nsnull, nsnull);
|
|
}
|
|
|
|
FrameHashTable::~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
|
|
|