/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- * * The contents of this file are subject to the Netscape Public * License Version 1.1 (the "License"); you may not use this file * except in compliance with the License. You may obtain a copy of * the License at http://www.mozilla.org/NPL/ * * Software distributed under the License is distributed on an "AS * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or * implied. See the License for the specific language governing * rights and limitations under the License. * * The Original Code is mozilla.org code. * * The Initial Developer of the Original Code is Netscape * Communications Corporation. Portions created by Netscape are * Copyright (C) 1998 Netscape Communications Corporation. All * Rights Reserved. * * Contributor(s): * Steve Clark * Håkan Waara * Dan Rosen * Daniel Glazman * * IBM Corporation * * This Original Code has been modified by IBM Corporation. * Modifications made by IBM described herein are * Copyright (c) International Business Machines * Corporation, 2000 * * Modifications to Mozilla code or documentation * identified per MPL Section 3.3 * * Date Modified by Description of modification * 05/03/2000 IBM Corp. Observer events for reflow states */ #define PL_ARENA_CONST_ALIGN_MASK 3 #include "nsIPresShell.h" #include "nsIPresContext.h" #include "nsIContent.h" #include "nsIDocument.h" #include "nsIDocumentObserver.h" #include "nsIStyleSet.h" #include "nsICSSStyleSheet.h" // XXX for UA sheet loading hack, can this go away please? #include "nsIDOMCSSStyleSheet.h" // for Pref-related rule management (bugs 22963,20760,31816) #include "nsINameSpaceManager.h" // for Pref-related rule management (bugs 22963,20760,31816) #include "nsIServiceManager.h" #include "nsFrame.h" #include "nsHTMLReflowCommand.h" #include "nsIViewManager.h" #include "nsCRT.h" #include "prlog.h" #include "prmem.h" #include "prinrval.h" #include "nsVoidArray.h" #include "nsHashtable.h" #include "nsIPref.h" #include "nsIViewObserver.h" #include "nsContainerFrame.h" #include "nsIDeviceContext.h" #include "nsIEventStateManager.h" #include "nsIDOMEvent.h" #include "nsGUIEvent.h" #include "nsHTMLParts.h" #include "nsISelection.h" #include "nsISelectionController.h" #include "nsReflowPath.h" #include "nsLayoutCID.h" #include "nsLayoutAtoms.h" #include "nsIDOMRange.h" #include "nsIDOMDocument.h" #include "nsIDOMNode.h" #include "nsIDOMNodeList.h" #include "nsIDOMElement.h" #include "nsHTMLAtoms.h" #include "nsCOMPtr.h" #include "nsReadableUtils.h" #include "nsUnicharUtils.h" #include "nsWeakReference.h" #include "nsIPageSequenceFrame.h" #include "nsICaret.h" #include "nsIDOMHTMLDocument.h" #include "nsIXMLDocument.h" #include "nsIDOMXMLDocument.h" #include "nsIScrollableView.h" #include "nsIParser.h" #include "nsParserCIID.h" #include "nsIFrameSelection.h" #include "nsIDOMNSHTMLInputElement.h" //optimization for ::DoXXX commands #include "nsIDOMNSHTMLTextAreaElement.h" #include "nsViewsCID.h" #include "nsIFrameManager.h" #include "nsISupportsPrimitives.h" #include "nsILayoutHistoryState.h" #include "nsIScrollPositionListener.h" #include "nsICompositeListener.h" #include "nsILineIterator.h" // for ScrollFrameIntoView #include "nsTimer.h" #include "nsWeakPtr.h" #include "plarena.h" #include "nsCSSAtoms.h" #include "nsIObserverService.h" // for reflow observation #include "nsIDocShell.h" // for reflow observation #include "nsIDOMRange.h" #ifdef MOZ_PERF_METRICS #include "nsITimeRecorder.h" #endif #ifdef NS_DEBUG #include "nsIFrameDebug.h" #endif // for |#ifdef DEBUG| code #include "nsSpaceManager.h" #include "prenv.h" #ifdef MOZ_REFLOW_PERF_DSP #include "nsIRenderingContext.h" #include "nsIFontMetrics.h" #endif #include "nsIReflowCallback.h" #include "nsIScriptGlobalObject.h" #include "nsIDOMWindowInternal.h" #include "nsPIDOMWindow.h" #include "nsIFocusController.h" #include "nsIPrintPreviewContext.h" // Drag & Drop, Clipboard #include "nsWidgetsCID.h" #include "nsIClipboard.h" #include "nsIClipboardHelper.h" #include "nsIDocShellTreeItem.h" #include "nsIURI.h" #include "nsIEventQueue.h" #include "nsIEventQueueService.h" #include "nsIScrollableFrame.h" #include "prtime.h" #include "prlong.h" #include "nsIDragService.h" #include "nsCopySupport.h" #include "nsIDOMHTMLAnchorElement.h" #include "nsIDOMHTMLAreaElement.h" #include "nsIDOMHTMLLinkElement.h" #include "nsIDOMHTMLImageElement.h" #include "nsITimer.h" // For style data reconstruction #include "nsStyleChangeList.h" #include "nsIStyleFrameConstruction.h" #include "nsINameSpaceManager.h" #include "nsIBindingManager.h" #include "nsIMenuFrame.h" #include "nsITreeBoxObject.h" #include "nsIXBLBinding.h" #include "nsPlaceholderFrame.h" // Dummy layout request #include "nsDummyLayoutRequest.h" // Content viewer interfaces #include "nsIContentViewer.h" #include "nsIDocumentViewer.h" #ifdef IBMBIDI #include "nsIBidiKeyboard.h" #endif // IBMBIDI #include "nsContentCID.h" static NS_DEFINE_CID(kCSSStyleSheetCID, NS_CSS_STYLESHEET_CID); static NS_DEFINE_CID(kStyleSetCID, NS_STYLESET_CID); static NS_DEFINE_IID(kRangeCID, NS_RANGE_CID); static NS_DEFINE_CID(kPrintPreviewContextCID, NS_PRINT_PREVIEW_CONTEXT_CID); // convert a color value to a string, in the CSS format #RRGGBB // * - initially created for bugs 31816, 20760, 22963 static void ColorToString(nscolor aColor, nsAutoString &aString); // local management of the style watch: // aCtlValue should be set to all actions desired (bitwise OR'd together) // aStyleSet cannot be null // NOTE: implementation is noop unless MOZ_PERF_METRICS is defined static nsresult CtlStyleWatch(PRUint32 aCtlValue, nsIStyleSet *aStyleSet); #define kStyleWatchEnable 1 #define kStyleWatchDisable 2 #define kStyleWatchPrint 4 #define kStyleWatchStart 8 #define kStyleWatchStop 16 #define kStyleWatchReset 32 // Class ID's static NS_DEFINE_CID(kFrameSelectionCID, NS_FRAMESELECTION_CID); static NS_DEFINE_CID(kEventQueueServiceCID, NS_EVENTQUEUESERVICE_CID); static NS_DEFINE_CID(kViewCID, NS_VIEW_CID); static NS_DEFINE_CID(kPrefServiceCID, NS_PREF_CID); #undef NOISY // ---------------------------------------------------------------------- #ifdef NS_DEBUG // Set the environment variable GECKO_VERIFY_REFLOW_FLAGS to one or // more of the following flags (comma separated) for handy debug // output. static PRUint32 gVerifyReflowFlags; struct VerifyReflowFlags { char* name; PRUint32 bit; }; static VerifyReflowFlags gFlags[] = { { "verify", VERIFY_REFLOW_ON }, { "reflow", VERIFY_REFLOW_NOISY }, { "all", VERIFY_REFLOW_ALL }, { "list-commands", VERIFY_REFLOW_DUMP_COMMANDS }, { "noisy-commands", VERIFY_REFLOW_NOISY_RC }, { "really-noisy-commands", VERIFY_REFLOW_REALLY_NOISY_RC }, { "space-manager", VERIFY_REFLOW_INCLUDE_SPACE_MANAGER }, { "resize", VERIFY_REFLOW_DURING_RESIZE_REFLOW }, }; #define NUM_VERIFY_REFLOW_FLAGS (sizeof(gFlags) / sizeof(gFlags[0])) static void ShowVerifyReflowFlags() { printf("Here are the available GECKO_VERIFY_REFLOW_FLAGS:\n"); VerifyReflowFlags* flag = gFlags; VerifyReflowFlags* limit = gFlags + NUM_VERIFY_REFLOW_FLAGS; while (flag < limit) { printf(" %s\n", flag->name); ++flag; } printf("Note: GECKO_VERIFY_REFLOW_FLAGS is a comma separated list of flag\n"); printf("names (no whitespace)\n"); } #endif //======================================================================== //======================================================================== //======================================================================== #ifdef MOZ_REFLOW_PERF class ReflowCountMgr; static const char * kGrandTotalsStr = "Grand Totals"; #define NUM_REFLOW_TYPES 5 // Counting Class class ReflowCounter { public: ReflowCounter(ReflowCountMgr * aMgr = nsnull); ~ReflowCounter(); void ClearTotals(); void DisplayTotals(const char * aStr); void DisplayDiffTotals(const char * aStr); void DisplayHTMLTotals(const char * aStr); void Add(nsReflowReason aType) { mTotals[aType]++; } void Add(nsReflowReason aType, PRUint32 aTotal) { mTotals[aType] += aTotal; } void CalcDiffInTotals(); void SetTotalsCache(); void SetMgr(ReflowCountMgr * aMgr) { mMgr = aMgr; } PRUint32 GetTotalByType(nsReflowReason aType) { if (aType >= eReflowReason_Initial && aType <= eReflowReason_Dirty) return mTotals[aType]; else return 0; } protected: void DisplayTotals(PRUint32 * aArray, const char * aTitle); void DisplayHTMLTotals(PRUint32 * aArray, const char * aTitle); PRUint32 mTotals[NUM_REFLOW_TYPES]; PRUint32 mCacheTotals[NUM_REFLOW_TYPES]; ReflowCountMgr * mMgr; // weak reference (don't delete) }; // Counting Class class IndiReflowCounter { public: IndiReflowCounter(ReflowCountMgr * aMgr = nsnull) : mFrame(nsnull), mCount(0), mMgr(aMgr), mCounter(aMgr), mHasBeenOutput(PR_FALSE) {} virtual ~IndiReflowCounter() {} nsAutoString mName; nsIFrame * mFrame; // weak reference (don't delete) PRInt32 mCount; ReflowCountMgr * mMgr; // weak reference (don't delete) ReflowCounter mCounter; PRBool mHasBeenOutput; }; //-------------------- // Manager Class //-------------------- class ReflowCountMgr { public: ReflowCountMgr(); virtual ~ReflowCountMgr(); void ClearTotals(); void ClearGrandTotals(); void DisplayTotals(const char * aStr); void DisplayHTMLTotals(const char * aStr); void DisplayDiffsInTotals(const char * aStr); void Add(const char * aName, nsReflowReason aType, nsIFrame * aFrame); ReflowCounter * LookUp(const char * aName); void PaintCount(const char * aName, nsIRenderingContext* aRenderingContext, nsIPresContext* aPresContext, nsIFrame * aFrame, PRUint32 aColor); FILE * GetOutFile() { return mFD; } PLHashTable * GetIndiFrameHT() { return mIndiFrameCounts; } void SetPresContext(nsIPresContext * aPresContext) { mPresContext = aPresContext; } // weak reference void SetPresShell(nsIPresShell* aPresShell) { mPresShell= aPresShell; } // weak reference void SetDumpFrameCounts(PRBool aVal) { mDumpFrameCounts = aVal; } void SetDumpFrameByFrameCounts(PRBool aVal) { mDumpFrameByFrameCounts = aVal; } void SetPaintFrameCounts(PRBool aVal) { mPaintFrameByFrameCounts = aVal; } protected: void DisplayTotals(PRUint32 * aArray, PRUint32 * aDupArray, char * aTitle); void DisplayHTMLTotals(PRUint32 * aArray, PRUint32 * aDupArray, char * aTitle); PR_STATIC_CALLBACK(PRIntn) RemoveItems(PLHashEntry *he, PRIntn i, void *arg); PR_STATIC_CALLBACK(PRIntn) RemoveIndiItems(PLHashEntry *he, PRIntn i, void *arg); void CleanUp(); // stdout Output Methods PR_STATIC_CALLBACK(PRIntn) DoSingleTotal(PLHashEntry *he, PRIntn i, void *arg); PR_STATIC_CALLBACK(PRIntn) DoSingleIndi(PLHashEntry *he, PRIntn i, void *arg); void DoGrandTotals(); void DoIndiTotalsTree(); // HTML Output Methods PR_STATIC_CALLBACK(PRIntn) DoSingleHTMLTotal(PLHashEntry *he, PRIntn i, void *arg); void DoGrandHTMLTotals(); // Zero Out the Totals PR_STATIC_CALLBACK(PRIntn) DoClearTotals(PLHashEntry *he, PRIntn i, void *arg); // Displays the Diff Totals PR_STATIC_CALLBACK(PRIntn) DoDisplayDiffTotals(PLHashEntry *he, PRIntn i, void *arg); PLHashTable * mCounts; PLHashTable * mIndiFrameCounts; FILE * mFD; PRBool mDumpFrameCounts; PRBool mDumpFrameByFrameCounts; PRBool mPaintFrameByFrameCounts; PRBool mCycledOnce; // Root Frame for Individual Tracking nsIPresContext * mPresContext; nsIPresShell* mPresShell; // ReflowCountMgr gReflowCountMgr; }; #endif //======================================================================== // comment out to hide caret #define SHOW_CARET // The upper bound on the amount of time to spend reflowing, in // microseconds. When this bound is exceeded and reflow commands are // still queued up, a reflow event is posted. The idea is for reflow // to not hog the processor beyond the time specifed in // gMaxRCProcessingTime. This data member is initialized from the // layout.reflow.timeslice pref. #define NS_MAX_REFLOW_TIME 1000000 static PRInt32 gMaxRCProcessingTime = -1; // Set to true to enable async reflow during document load. // This flag is initialized from the layout.reflow.async.duringDocLoad pref. static PRBool gAsyncReflowDuringDocLoad = PR_FALSE; // Largest chunk size we recycle static const size_t gMaxRecycledSize = 400; #define MARK_INCREMENT 50 #define BLOCK_INCREMENT 4044 /* a bit under 4096, for malloc overhead */ /**A block of memory that the stack will * chop up and hand out */ struct StackBlock { // a block of memory. Note that this must be first so that it will // be aligned. char mBlock[BLOCK_INCREMENT]; // another block of memory that would only be created // if our stack overflowed. Yes we have the ability // to grow on a stack overflow StackBlock* mNext; StackBlock() : mNext(nsnull) { } ~StackBlock() { } }; /* we hold an array of marks. A push pushes a mark on the stack * a pop pops it off. */ struct StackMark { // the block of memory we are currently handing out chunks of StackBlock* mBlock; // our current position in the memory size_t mPos; }; /* A stack arena allows a stack based interface to a block of memory. * It should be used when you need to allocate some temporary memory that * you will immediately return. */ class StackArena { public: StackArena(); ~StackArena(); // Memory management functions nsresult Allocate(size_t aSize, void** aResult); nsresult Push(); nsresult Pop(); private: // our current position in memory size_t mPos; // a list of memory block. Usually there is only one // but if we overrun our stack size we can get more memory. StackBlock* mBlocks; // the current block of memory we are passing our chucks of StackBlock* mCurBlock; // our stack of mark where push has been called StackMark* mMarks; // the current top of the the mark list PRUint32 mStackTop; // the size of the mark array PRUint32 mMarkLength; }; StackArena::StackArena() { // allocate the marks array mMarkLength = MARK_INCREMENT; mMarks = new StackMark[mMarkLength]; // allocate our stack memory mBlocks = new StackBlock(); mCurBlock = mBlocks; mStackTop = 0; mPos = 0; } StackArena::~StackArena() { // free up our data delete[] mMarks; while(mBlocks) { StackBlock* toDelete = mBlocks; mBlocks = mBlocks->mNext; delete toDelete; } } nsresult StackArena::Push() { // if the we overrun our mark array. Resize it. if (mStackTop + 1 >= mMarkLength) { StackMark* oldMarks = mMarks; PRUint32 oldLength = mMarkLength; mMarkLength += MARK_INCREMENT; mMarks = new StackMark[mMarkLength]; memcpy(mMarks, oldMarks, sizeof(StackMark)*oldLength); delete[] oldMarks; } // set a mark at the top mMarks[mStackTop].mBlock = mCurBlock; mMarks[mStackTop].mPos = mPos; mStackTop++; return NS_OK; } nsresult StackArena::Allocate(size_t aSize, void** aResult) { NS_ASSERTION(mStackTop > 0, "Error allocate called before push!!!"); // make sure we are aligned. Beard said 8 was safer then 4. // Round size to multiple of 8 aSize = PR_ROUNDUP(aSize, 8); // if the size makes the stack overflow. Grab another block for the stack if (mPos + aSize >= BLOCK_INCREMENT) { NS_ASSERTION(aSize <= BLOCK_INCREMENT,"Requested memory is greater that our block size!!"); if (mCurBlock->mNext == nsnull) mCurBlock->mNext = new StackBlock(); mCurBlock = mCurBlock->mNext; mPos = 0; } // return the chunk they need. *aResult = mCurBlock->mBlock + mPos; mPos += aSize; return NS_OK; } nsresult StackArena::Pop() { // pop off the mark NS_ASSERTION(mStackTop > 0, "Error Pop called 1 too many times"); mStackTop--; #ifdef DEBUG // Mark the "freed" memory with 0xdd to help with debugging of memory // allocation problems. { StackBlock *block = mMarks[mStackTop].mBlock, *block_end = mCurBlock; size_t pos = mMarks[mStackTop].mPos; for (; block != block_end; block = block->mNext, pos = 0) { memset(block->mBlock + pos, 0xdd, sizeof(block->mBlock) - pos); } memset(block->mBlock + pos, 0xdd, mPos - pos); } #endif mCurBlock = mMarks[mStackTop].mBlock; mPos = mMarks[mStackTop].mPos; return NS_OK; } // Uncomment this to disable the frame arena. //#define DEBUG_TRACEMALLOC_FRAMEARENA 1 // Memory is allocated 4-byte aligned. We have recyclers for chunks up to // 200 bytes class FrameArena { public: FrameArena(PRUint32 aArenaSize = 4096); ~FrameArena(); // Memory management functions nsresult AllocateFrame(size_t aSize, void** aResult); nsresult FreeFrame(size_t aSize, void* aPtr); private: #if !defined(DEBUG_TRACEMALLOC_FRAMEARENA) // Underlying arena pool PLArenaPool mPool; // The recycler array is sparse with the indices being multiples of 4, // i.e., 0, 4, 8, 12, 16, 20, ... void* mRecyclers[gMaxRecycledSize >> 2]; #endif }; FrameArena::FrameArena(PRUint32 aArenaSize) { #if !defined(DEBUG_TRACEMALLOC_FRAMEARENA) // Initialize the arena pool PL_INIT_ARENA_POOL(&mPool, "FrameArena", aArenaSize); // Zero out the recyclers array memset(mRecyclers, 0, sizeof(mRecyclers)); #endif } FrameArena::~FrameArena() { #if !defined(DEBUG_TRACEMALLOC_FRAMEARENA) // Free the arena in the pool and finish using it PL_FinishArenaPool(&mPool); #endif } nsresult FrameArena::AllocateFrame(size_t aSize, void** aResult) { #if defined(DEBUG_TRACEMALLOC_FRAMEARENA) *aResult = PR_Malloc(aSize); #else void* result = nsnull; // Ensure we have correct alignment for pointers. Important for Tru64 aSize = PR_ROUNDUP(aSize, sizeof(void*)); // Check recyclers first if (aSize < gMaxRecycledSize) { const int index = aSize >> 2; result = mRecyclers[index]; if (result) { // Need to move to the next object void* next = *((void**)result); mRecyclers[index] = next; } } if (!result) { // Allocate a new chunk from the arena PL_ARENA_ALLOCATE(result, &mPool, aSize); } *aResult = result; #endif return NS_OK; } nsresult FrameArena::FreeFrame(size_t aSize, void* aPtr) { #ifdef DEBUG // Mark the memory with 0xdd in DEBUG builds so that there will be // problems if someone tries to access memory that they've freed. memset(aPtr, 0xdd, aSize); #endif #if defined(DEBUG_TRACEMALLOC_FRAMEARENA) PR_Free(aPtr); #else // Ensure we have correct alignment for pointers. Important for Tru64 aSize = PR_ROUNDUP(aSize, sizeof(void*)); // See if it's a size that we recycle if (aSize < gMaxRecycledSize) { const int index = aSize >> 2; void* currentTop = mRecyclers[index]; mRecyclers[index] = aPtr; *((void**)aPtr) = currentTop; } #endif return NS_OK; } class PresShellViewEventListener : public nsIScrollPositionListener, public nsICompositeListener { public: PresShellViewEventListener(); virtual ~PresShellViewEventListener(); NS_DECL_ISUPPORTS // nsIScrollPositionListener methods NS_IMETHOD ScrollPositionWillChange(nsIScrollableView *aView, nscoord aX, nscoord aY); NS_IMETHOD ScrollPositionDidChange(nsIScrollableView *aView, nscoord aX, nscoord aY); // nsICompositeListener methods NS_IMETHOD WillRefreshRegion(nsIViewManager *aViewManager, nsIView *aView, nsIRenderingContext *aContext, nsIRegion *aRegion, PRUint32 aUpdateFlags); NS_IMETHOD DidRefreshRegion(nsIViewManager *aViewManager, nsIView *aView, nsIRenderingContext *aContext, nsIRegion *aRegion, PRUint32 aUpdateFlags); NS_IMETHOD WillRefreshRect(nsIViewManager *aViewManager, nsIView *aView, nsIRenderingContext *aContext, const nsRect *aRect, PRUint32 aUpdateFlags); NS_IMETHOD DidRefreshRect(nsIViewManager *aViewManager, nsIView *aView, nsIRenderingContext *aContext, const nsRect *aRect, PRUint32 aUpdateFlags); nsresult SetPresShell(nsIPresShell *aPresShell); private: nsresult HideCaret(); nsresult RestoreCaretVisibility(); nsIPresShell *mPresShell; PRBool mWasVisible; PRInt32 mCallCount; }; struct nsDOMEventRequest { nsIContent* content; nsEvent* event; nsDOMEventRequest* next; }; struct nsAttributeChangeRequest { nsIContent* content; PRInt32 nameSpaceID; nsIAtom* name; nsAutoString value; PRBool notify; nsAttributeChangeType type; nsAttributeChangeRequest* next; }; struct nsCallbackEventRequest { nsIReflowCallback* callback; nsCallbackEventRequest* next; }; PRInt32 nsDummyLayoutRequest::gRefCnt; nsIURI* nsDummyLayoutRequest::gURI; NS_IMPL_ADDREF(nsDummyLayoutRequest); NS_IMPL_RELEASE(nsDummyLayoutRequest); NS_IMPL_QUERY_INTERFACE2(nsDummyLayoutRequest, nsIRequest, nsIChannel); nsresult nsDummyLayoutRequest::Create(nsIRequest** aResult, nsIPresShell* aPresShell) { nsDummyLayoutRequest* request = new nsDummyLayoutRequest(aPresShell); if (!request) return NS_ERROR_OUT_OF_MEMORY; return request->QueryInterface(NS_GET_IID(nsIRequest), (void**) aResult); } nsDummyLayoutRequest::nsDummyLayoutRequest(nsIPresShell* aPresShell) { NS_INIT_REFCNT(); if (gRefCnt++ == 0) { nsresult rv; rv = NS_NewURI(&gURI, "about:layout-dummy-request", nsnull); NS_ASSERTION(NS_SUCCEEDED(rv), "unable to create about:layout-dummy-request"); } mPresShell = getter_AddRefs(NS_GetWeakReference(aPresShell)); } nsDummyLayoutRequest::~nsDummyLayoutRequest() { if (--gRefCnt == 0) { NS_IF_RELEASE(gURI); } } NS_IMETHODIMP nsDummyLayoutRequest::Cancel(nsresult status) { // Cancel layout nsresult rv = NS_OK; nsCOMPtr presShell = do_QueryReferent(mPresShell); if (presShell) { rv = presShell->CancelAllReflowCommands(); } return rv; } // ---------------------------------------------------------------------------- /** * Used to build and maintain the incremental reflow tree, and * dispatch incremental reflows to individual reflow roots. */ class IncrementalReflow { public: ~IncrementalReflow(); /** * Add a reflow command to the set of commands that are to be * dispatched in the incremental reflow. Returns `true' if * successful, `false' if the command could not be added (and thus, * should be re-scheduled). */ PRBool AddCommand(nsIPresContext *aPresContext, nsHTMLReflowCommand *aCommand); /** * Dispatch the incremental reflow. */ void Dispatch(nsIPresContext *aPresContext, nsHTMLReflowMetrics &aDesiredSize, const nsSize &aMaxSize, nsIRenderingContext &aRendContext); #ifdef NS_DEBUG /** * Dump the incremental reflow state. */ void Dump(nsIPresContext *aPresContext) const; #endif protected: /** * The set of incremental reflow roots. */ nsAutoVoidArray mRoots; }; IncrementalReflow::~IncrementalReflow() { for (PRInt32 i = mRoots.Count() - 1; i >= 0; --i) delete NS_STATIC_CAST(nsReflowPath *, mRoots[i]); } void IncrementalReflow::Dispatch(nsIPresContext *aPresContext, nsHTMLReflowMetrics &aDesiredSize, const nsSize &aMaxSize, nsIRenderingContext &aRendContext) { for (PRInt32 i = mRoots.Count() - 1; i >= 0; --i) { // Send an incremental reflow notification to the first frame in the // path. nsReflowPath *path = NS_STATIC_CAST(nsReflowPath *, mRoots[i]); nsIFrame *first = path->mFrame; nsCOMPtr shell; aPresContext->GetShell(getter_AddRefs(shell)); nsIFrame* root; shell->GetRootFrame(&root); first->WillReflow(aPresContext); nsContainerFrame::PositionFrameView(aPresContext, first); // If the first frame in the path is the root of the frame // hierarchy, then use all the available space. If it's simply a // `reflow root', then use the first frame's size as the available // space. nsSize size; if (first == root) size = aMaxSize; else first->GetSize(size); nsHTMLReflowState reflowState(aPresContext, first, path, &aRendContext, size); nsReflowStatus status; first->Reflow(aPresContext, aDesiredSize, reflowState, status); // If an incremental reflow is initiated at a frame other than the // root frame, then its desired size had better not change! NS_ASSERTION(first == root || (aDesiredSize.width == size.width && aDesiredSize.height == size.height), "non-root frame's desired size changed during an incremental reflow"); first->SizeTo(aPresContext, aDesiredSize.width, aDesiredSize.height); nsIView* view; first->GetView(aPresContext, &view); if (view) nsContainerFrame::SyncFrameViewAfterReflow(aPresContext, first, view, nsnull); first->DidReflow(aPresContext, nsnull, NS_FRAME_REFLOW_FINISHED); } } PRBool IncrementalReflow::AddCommand(nsIPresContext *aPresContext, nsHTMLReflowCommand *aCommand) { nsIFrame *frame; aCommand->GetTarget(frame); NS_ASSERTION(frame != nsnull, "reflow command with no target"); // Construct the reflow path by walking up the through the frames' // parent chain until we reach either a `reflow root' or the root // frame in the frame hierarchy. nsAutoVoidArray path; nsFrameState state; do { path.AppendElement(frame); frame->GetFrameState(&state); } while (!(state & NS_FRAME_REFLOW_ROOT) && (frame->GetParent(&frame), frame != nsnull)); // Pop off the root, add it to the set if it's not there already. PRInt32 lastIndex = path.Count() - 1; nsIFrame *rootFrame = NS_STATIC_CAST(nsIFrame *, path[lastIndex]); path.RemoveElementAt(lastIndex); nsReflowPath *root = nsnull; PRInt32 i; for (i = mRoots.Count() - 1; i >= 0; --i) { nsReflowPath *path = NS_STATIC_CAST(nsReflowPath *, mRoots[i]); if (path->mFrame == rootFrame) { root = path; break; } } if (! root) { root = new nsReflowPath(rootFrame); if (! root) return NS_ERROR_OUT_OF_MEMORY; root->mReflowCommand = nsnull; mRoots.AppendElement(root); } // Now walk the path from the root to the leaf, adding to the reflow // tree as necessary. nsReflowPath *target = root; for (i = path.Count() - 1; i >= 0; --i) { nsIFrame *frame = NS_STATIC_CAST(nsIFrame *, path[i]); target = target->EnsureSubtreeFor(frame); // Out of memory. Ugh. if (! target) return PR_FALSE; } // Place the reflow command in the leaf, if one isn't there already. if (target->mReflowCommand) { // XXXwaterson it's probably possible to have some notion of // `promotion' here that would avoid any re-queuing; for example, // promote a dirty reflow to a style changed. For now, let's punt // and not worry about it. #ifdef NS_DEBUG if (gVerifyReflowFlags & VERIFY_REFLOW_NOISY_RC) printf("requeuing command %p because %p was already scheduled " "for the same frame", aCommand, target->mReflowCommand); #endif return PR_FALSE; } target->mReflowCommand = aCommand; return PR_TRUE; } #ifdef NS_DEBUG void IncrementalReflow::Dump(nsIPresContext *aPresContext) const { for (PRInt32 i = mRoots.Count() - 1; i >= 0; --i) NS_STATIC_CAST(nsReflowPath *, mRoots[i])->Dump(aPresContext, stdout, 0); } #endif // ---------------------------------------------------------------------------- class PresShell : public nsIPresShell, public nsIViewObserver, private nsIDocumentObserver, public nsIFocusTracker, public nsISelectionController, public nsSupportsWeakReference { public: PresShell(); NS_DECL_AND_IMPL_ZEROING_OPERATOR_NEW // nsISupports NS_DECL_ISUPPORTS // nsIPresShell NS_IMETHOD Init(nsIDocument* aDocument, nsIPresContext* aPresContext, nsIViewManager* aViewManager, nsIStyleSet* aStyleSet, nsCompatibility aCompatMode); NS_IMETHOD Destroy(); NS_IMETHOD AllocateFrame(size_t aSize, void** aResult); NS_IMETHOD FreeFrame(size_t aSize, void* aFreeChunk); // Dynamic stack memory allocation NS_IMETHOD PushStackMemory(); NS_IMETHOD PopStackMemory(); NS_IMETHOD AllocateStackMemory(size_t aSize, void** aResult); NS_IMETHOD GetDocument(nsIDocument** aResult); NS_IMETHOD GetPresContext(nsIPresContext** aResult); NS_IMETHOD GetViewManager(nsIViewManager** aResult); NS_IMETHOD GetStyleSet(nsIStyleSet** aResult); NS_IMETHOD GetActiveAlternateStyleSheet(nsString& aSheetTitle); NS_IMETHOD SelectAlternateStyleSheet(const nsString& aSheetTitle); NS_IMETHOD ListAlternateStyleSheets(nsStringArray& aTitleList); NS_IMETHOD ReconstructStyleData(PRBool aRebuildRuleTree); NS_IMETHOD SetPreferenceStyleRules(PRBool aForceReflow); NS_IMETHOD EnablePrefStyleRules(PRBool aEnable, PRUint8 aPrefType=0xFF); NS_IMETHOD ArePrefStyleRulesEnabled(PRBool& aEnabled); NS_IMETHOD SetDisplaySelection(PRInt16 aToggle); NS_IMETHOD GetDisplaySelection(PRInt16 *aToggle); NS_IMETHOD GetSelection(SelectionType aType, nsISelection** aSelection); NS_IMETHOD ScrollSelectionIntoView(SelectionType aType, SelectionRegion aRegion, PRBool aIsSynchronous); NS_IMETHOD RepaintSelection(SelectionType aType); NS_IMETHOD GetFrameSelection(nsIFrameSelection** aSelection); NS_IMETHOD BeginObservingDocument(); NS_IMETHOD EndObservingDocument(); NS_IMETHOD InitialReflow(nscoord aWidth, nscoord aHeight); NS_IMETHOD ResizeReflow(nscoord aWidth, nscoord aHeight); NS_IMETHOD StyleChangeReflow(); NS_IMETHOD GetRootFrame(nsIFrame** aFrame) const; NS_IMETHOD GetPageSequenceFrame(nsIPageSequenceFrame** aResult) const; NS_IMETHOD GetPrimaryFrameFor(nsIContent* aContent, nsIFrame** aPrimaryFrame) const; NS_IMETHOD GetStyleContextFor(nsIFrame* aFrame, nsIStyleContext** aStyleContext) const; NS_IMETHOD GetLayoutObjectFor(nsIContent* aContent, nsISupports** aResult) const; NS_IMETHOD GetPlaceholderFrameFor(nsIFrame* aFrame, nsIFrame** aPlaceholderFrame) const; NS_IMETHOD AppendReflowCommand(nsHTMLReflowCommand* aReflowCommand); NS_IMETHOD CancelReflowCommand(nsIFrame* aTargetFrame, nsReflowType* aCmdType); NS_IMETHOD CancelReflowCommandInternal(nsIFrame* aTargetFrame, nsReflowType* aCmdType, PRBool aProcessDummyLayoutRequest = PR_TRUE); NS_IMETHOD CancelAllReflowCommands(); NS_IMETHOD IsSafeToFlush(PRBool& aIsSafeToFlush); NS_IMETHOD FlushPendingNotifications(PRBool aUpdateViews); /** * Post a request to handle a DOM event after Reflow has finished. */ NS_IMETHOD PostDOMEvent(nsIContent* aContent, nsEvent* aEvent); /** * Post a request to set and attribute after reflow has finished. */ NS_IMETHOD PostAttributeChange(nsIContent* aContent, PRInt32 aNameSpaceID, nsIAtom* aName, const nsString& aValue, PRBool aNotify, nsAttributeChangeType aType); /** * Post a callback that should be handled after reflow has finished. */ NS_IMETHOD PostReflowCallback(nsIReflowCallback* aCallback); NS_IMETHOD CancelReflowCallback(nsIReflowCallback* aCallback); /** * Reflow batching */ NS_IMETHOD BeginReflowBatching(); NS_IMETHOD EndReflowBatching(PRBool aFlushPendingReflows); NS_IMETHOD GetReflowBatchingStatus(PRBool* aBatch); NS_IMETHOD ClearFrameRefs(nsIFrame* aFrame); NS_IMETHOD CreateRenderingContext(nsIFrame *aFrame, nsIRenderingContext** aContext); NS_IMETHOD CantRenderReplacedElement(nsIPresContext* aPresContext, nsIFrame* aFrame); NS_IMETHOD GoToAnchor(const nsAString& aAnchorName); NS_IMETHOD ScrollFrameIntoView(nsIFrame *aFrame, PRIntn aVPercent, PRIntn aHPercent) const; NS_IMETHOD SetIgnoreFrameDestruction(PRBool aIgnore); NS_IMETHOD NotifyDestroyingFrame(nsIFrame* aFrame); NS_IMETHOD GetFrameManager(nsIFrameManager** aFrameManager) const; NS_IMETHOD DoCopy(); NS_IMETHOD GetLinkLocation(nsIDOMNode* aNode, nsAString& aLocationString); NS_IMETHOD GetImageLocation(nsIDOMNode* aNode, nsAString& aLocationString); NS_IMETHOD DoCopyImageContents(nsIDOMNode* aNode); NS_IMETHOD CaptureHistoryState(nsILayoutHistoryState** aLayoutHistoryState, PRBool aLeavingPage); NS_IMETHOD GetHistoryState(nsILayoutHistoryState** aLayoutHistoryState); NS_IMETHOD SetHistoryState(nsILayoutHistoryState* aLayoutHistoryState); NS_IMETHOD GetGeneratedContentIterator(nsIContent* aContent, GeneratedContentType aType, nsIContentIterator** aIterator) const; NS_IMETHOD SetAnonymousContentFor(nsIContent* aContent, nsISupportsArray* aAnonymousElements); NS_IMETHOD GetAnonymousContentFor(nsIContent* aContent, nsISupportsArray** aAnonymousElements); NS_IMETHOD ReleaseAnonymousContent(); NS_IMETHOD IsPaintingSuppressed(PRBool* aResult); NS_IMETHOD UnsuppressPainting(); NS_IMETHOD HandleEventWithTarget(nsEvent* aEvent, nsIFrame* aFrame, nsIContent* aContent, PRUint32 aFlags, nsEventStatus* aStatus); NS_IMETHOD GetEventTargetFrame(nsIFrame** aFrame); NS_IMETHOD IsReflowLocked(PRBool* aIsLocked); #ifdef IBMBIDI NS_IMETHOD SetCaretBidiLevel(PRUint8 aLevel); NS_IMETHOD GetCaretBidiLevel(PRUint8 *aOutLevel); NS_IMETHOD UndefineCaretBidiLevel(); NS_IMETHOD BidiStyleChangeReflow(); #endif //nsIViewObserver interface NS_IMETHOD Paint(nsIView *aView, nsIRenderingContext& aRenderingContext, const nsRect& aDirtyRect); NS_IMETHOD HandleEvent(nsIView* aView, nsGUIEvent* aEvent, nsEventStatus* aEventStatus, PRBool aForceHandle, PRBool& aHandled); NS_IMETHOD HandleDOMEventWithTarget(nsIContent* aTargetContent, nsEvent* aEvent, nsEventStatus* aStatus); NS_IMETHOD Scrolled(nsIView *aView); NS_IMETHOD ResizeReflow(nsIView *aView, nscoord aWidth, nscoord aHeight); //nsIFocusTracker interface NS_IMETHOD ScrollFrameIntoView(nsIFrame *aFrame); // caret handling NS_IMETHOD GetCaret(nsICaret **aOutCaret); NS_IMETHOD SetCaretEnabled(PRBool aInEnable); NS_IMETHOD SetCaretWidth(PRInt16 twips); NS_IMETHOD SetCaretReadOnly(PRBool aReadOnly); NS_IMETHOD GetCaretEnabled(PRBool *aOutEnabled); NS_IMETHOD SetSelectionFlags(PRInt16 aInEnable); NS_IMETHOD GetSelectionFlags(PRInt16 *aOutEnable); // nsISelectionController NS_IMETHOD CharacterMove(PRBool aForward, PRBool aExtend); NS_IMETHOD WordMove(PRBool aForward, PRBool aExtend); NS_IMETHOD LineMove(PRBool aForward, PRBool aExtend); NS_IMETHOD IntraLineMove(PRBool aForward, PRBool aExtend); NS_IMETHOD PageMove(PRBool aForward, PRBool aExtend); NS_IMETHOD ScrollPage(PRBool aForward); NS_IMETHOD ScrollLine(PRBool aForward); NS_IMETHOD ScrollHorizontal(PRBool aLeft); NS_IMETHOD CompleteScroll(PRBool aForward); NS_IMETHOD CompleteMove(PRBool aForward, PRBool aExtend); NS_IMETHOD SelectAll(); NS_IMETHOD CheckVisibility(nsIDOMNode *node, PRInt16 startOffset, PRInt16 EndOffset, PRBool *_retval); // nsIDocumentObserver NS_IMETHOD BeginUpdate(nsIDocument *aDocument); NS_IMETHOD EndUpdate(nsIDocument *aDocument); NS_IMETHOD BeginLoad(nsIDocument *aDocument); NS_IMETHOD EndLoad(nsIDocument *aDocument); NS_IMETHOD BeginReflow(nsIDocument *aDocument, nsIPresShell* aShell); NS_IMETHOD EndReflow(nsIDocument *aDocument, nsIPresShell* aShell); NS_IMETHOD ContentChanged(nsIDocument *aDocument, nsIContent* aContent, nsISupports* aSubContent); NS_IMETHOD ContentStatesChanged(nsIDocument* aDocument, nsIContent* aContent1, nsIContent* aContent2, PRInt32 aStateMask); NS_IMETHOD AttributeChanged(nsIDocument *aDocument, nsIContent* aContent, PRInt32 aNameSpaceID, nsIAtom* aAttribute, PRInt32 aModType, PRInt32 aHint); NS_IMETHOD ContentAppended(nsIDocument *aDocument, nsIContent* aContainer, PRInt32 aNewIndexInContainer); NS_IMETHOD ContentInserted(nsIDocument *aDocument, nsIContent* aContainer, nsIContent* aChild, PRInt32 aIndexInContainer); NS_IMETHOD ContentReplaced(nsIDocument *aDocument, nsIContent* aContainer, nsIContent* aOldChild, nsIContent* aNewChild, PRInt32 aIndexInContainer); NS_IMETHOD ContentRemoved(nsIDocument *aDocument, nsIContent* aContainer, nsIContent* aChild, PRInt32 aIndexInContainer); NS_IMETHOD StyleSheetAdded(nsIDocument *aDocument, nsIStyleSheet* aStyleSheet); NS_IMETHOD StyleSheetRemoved(nsIDocument *aDocument, nsIStyleSheet* aStyleSheet); NS_IMETHOD StyleSheetDisabledStateChanged(nsIDocument *aDocument, nsIStyleSheet* aStyleSheet, PRBool aDisabled); NS_IMETHOD StyleRuleChanged(nsIDocument *aDocument, nsIStyleSheet* aStyleSheet, nsIStyleRule* aStyleRule, PRInt32 aHint); NS_IMETHOD StyleRuleAdded(nsIDocument *aDocument, nsIStyleSheet* aStyleSheet, nsIStyleRule* aStyleRule); NS_IMETHOD StyleRuleRemoved(nsIDocument *aDocument, nsIStyleSheet* aStyleSheet, nsIStyleRule* aStyleRule); NS_IMETHOD DocumentWillBeDestroyed(nsIDocument *aDocument); #ifdef MOZ_REFLOW_PERF NS_IMETHOD DumpReflows(); NS_IMETHOD CountReflows(const char * aName, PRUint32 aType, nsIFrame * aFrame); NS_IMETHOD PaintCount(const char * aName, nsIRenderingContext* aRenderingContext, nsIPresContext* aPresContext, nsIFrame * aFrame, PRUint32 aColor); NS_IMETHOD SetPaintFrameCount(PRBool aOn); #endif #ifdef PR_LOGGING static PRLogModuleInfo* gLog; #endif protected: virtual ~PresShell(); void HandlePostedDOMEvents(); void HandlePostedAttributeChanges(); void HandlePostedReflowCallbacks(); void UnsuppressAndInvalidate(); /** notify all external reflow observers that reflow of type "aData" is about * to begin. */ nsresult NotifyReflowObservers(const char *aData); nsresult ReflowCommandAdded(nsHTMLReflowCommand* aRC); nsresult ReflowCommandRemoved(nsHTMLReflowCommand* aRC); // This method should be called after a reflow commands have been // removed from the queue, but after the state in the presshell is // such that it's safe to flush (i.e. mIsReflowing == PR_FALSE) // If we are not reflowing and ther are no load-crated reflow commands, then // the dummyLayoutRequest is removed void DoneRemovingReflowCommands(); nsresult AddDummyLayoutRequest(void); nsresult RemoveDummyLayoutRequest(void); nsresult ReconstructFrames(void); nsresult CloneStyleSet(nsIStyleSet* aSet, nsIStyleSet** aResult); nsresult WillCauseReflow(); nsresult DidCauseReflow(); nsresult ProcessReflowCommands(PRBool aInterruptible); nsresult ClearReflowEventStatus(); void PostReflowEvent(); PRBool AlreadyInQueue(nsHTMLReflowCommand* aReflowCommand, nsVoidArray& aQueue); friend struct ReflowEvent; // utility to determine if we're in the middle of a drag PRBool IsDragInProgress ( ) const ; PRBool mCaretEnabled; #ifdef IBMBIDI PRUint8 mBidiLevel; // The Bidi level of the cursor nsCOMPtr mBidiKeyboard; #endif // IBMBIDI #ifdef NS_DEBUG PRBool VerifyIncrementalReflow(); PRBool mInVerifyReflow; #endif /** * methods that manage rules that are used to implement the associated preferences * - initially created for bugs 31816, 20760, 22963 */ nsresult ClearPreferenceStyleRules(void); nsresult CreatePreferenceStyleSheet(void); nsresult SetPrefColorRules(void); nsresult SetPrefLinkRules(void); nsresult SetPrefFocusRules(void); nsresult SelectRange(nsIDOMRange *aRange); // IMPORTANT: The ownership implicit in the following member variables has been // explicitly checked and set using nsCOMPtr for owning pointers and raw COM interface // pointers for weak (ie, non owning) references. If you add any members to this // class, please make the ownership explicit (pinkerton, scc). // these are the same Document and PresContext owned by the DocViewer. // we must share ownership. nsCOMPtr mDocument; nsCOMPtr mPresContext; nsCOMPtr mStyleSet; nsICSSStyleSheet* mPrefStyleSheet; // mStyleSet owns it but we maintaina ref, may be null nsIViewManager* mViewManager; // [WEAK] docViewer owns it so I don't have to nsWeakPtr mHistoryState; // [WEAK] session history owns this PRUint32 mUpdateCount; // normal reflow commands nsVoidArray mReflowCommands; PRPackedBool mEnablePrefStyleSheet; PRPackedBool mDocumentLoading; PRPackedBool mIsReflowing; PRPackedBool mIsDestroying; PRPackedBool mDidInitialReflow; PRPackedBool mIgnoreFrameDestruction; nsIFrame* mCurrentEventFrame; nsIContent* mCurrentEventContent; nsVoidArray mCurrentEventFrameStack; nsVoidArray mCurrentEventContentStack; nsSupportsHashtable* mAnonymousContentTable; #ifdef NS_DEBUG nsRect mCurrentTargetRect; nsIView* mCurrentTargetView; #endif nsCOMPtr mSelection; nsCOMPtr mCaret; PRInt16 mSelectionFlags; PRPackedBool mScrollingEnabled; //used to disable programmable scrolling from outside PRPackedBool mBatchReflows; // When set to true, the pres shell batches reflow commands. nsIFrameManager* mFrameManager; // we hold a reference PresShellViewEventListener *mViewEventListener; nsCOMPtr mEventQueueService; nsCOMPtr mReflowEventQueue; FrameArena mFrameArena; StackArena* mStackArena; nsCOMPtr mObserverService; // Observer service for reflow events nsCOMPtr mDragService; PRInt32 mRCCreatedDuringLoad; // Counter to keep track of reflow commands created during doc nsCOMPtr mDummyLayoutRequest; // used for list of posted events and attribute changes. To be done // after reflow. nsDOMEventRequest* mFirstDOMEventRequest; nsDOMEventRequest* mLastDOMEventRequest; nsAttributeChangeRequest* mFirstAttributeRequest; nsAttributeChangeRequest* mLastAttributeRequest; nsCallbackEventRequest* mFirstCallbackEventRequest; nsCallbackEventRequest* mLastCallbackEventRequest; PRPackedBool mIsDocumentGone; // We've been disconnected from the document. PRPackedBool mPaintingSuppressed; // For all documents we initially lock down painting. // We will refuse to paint the document until either // (a) our timer fires or (b) all frames are constructed. PRPackedBool mShouldUnsuppressPainting; // Indicates that it is safe to unlock painting once all pending // reflows have been processed. nsCOMPtr mPaintSuppressionTimer; // This timer controls painting suppression. Until it fires // or all frames are constructed, we won't paint anything but // our background and scrollbars. #define PAINTLOCK_EVENT_DELAY 1200 // 1200 ms. This is actually pref-controlled, but we use this // value if we fail to get the pref for any reason. static void sPaintSuppressionCallback(nsITimer* aTimer, void* aPresShell); // A callback for the timer. MOZ_TIMER_DECLARE(mReflowWatch) // Used for measuring time spent in reflow MOZ_TIMER_DECLARE(mFrameCreationWatch) // Used for measuring time spent in frame creation #ifdef MOZ_REFLOW_PERF ReflowCountMgr * mReflowCountMgr; #endif private: void FreeDynamicStack(); //helper funcs for disabing autoscrolling void DisableScrolling(){mScrollingEnabled = PR_FALSE;} void EnableScrolling(){mScrollingEnabled = PR_TRUE;} PRBool IsScrollingEnabled(){return mScrollingEnabled;} //helper funcs for event handling nsIFrame* GetCurrentEventFrame(); void PushCurrentEventInfo(nsIFrame* aFrame, nsIContent* aContent); void PopCurrentEventInfo(); nsresult HandleEventInternal(nsEvent* aEvent, nsIView* aView, PRUint32 aFlags, nsEventStatus *aStatus); //help funcs for resize events void CreateResizeEventTimer(); void KillResizeEventTimer(); void FireResizeEvent(); static void sResizeEventCallback(nsITimer* aTimer, void* aPresShell) ; nsCOMPtr mResizeEventTimer; }; #ifdef PR_LOGGING PRLogModuleInfo* PresShell::gLog; #endif #ifdef NS_DEBUG static void VerifyStyleTree(nsIPresContext* aPresContext, nsIFrameManager* aFrameManager) { if (aFrameManager && nsIFrameDebug::GetVerifyStyleTreeEnable()) { nsIFrame* rootFrame; aFrameManager->GetRootFrame(&rootFrame); aFrameManager->DebugVerifyStyleTree(aPresContext, rootFrame); } } #define VERIFY_STYLE_TREE VerifyStyleTree(mPresContext, mFrameManager) #else #define VERIFY_STYLE_TREE #endif static PRBool gVerifyReflowEnabled; PRBool nsIPresShell::GetVerifyReflowEnable() { #ifdef NS_DEBUG static PRBool firstTime = PR_TRUE; if (firstTime) { firstTime = PR_FALSE; char* flags = PR_GetEnv("GECKO_VERIFY_REFLOW_FLAGS"); if (flags) { PRBool error = PR_FALSE; for (;;) { char* comma = PL_strchr(flags, ','); if (comma) *comma = '\0'; PRBool found = PR_FALSE; VerifyReflowFlags* flag = gFlags; VerifyReflowFlags* limit = gFlags + NUM_VERIFY_REFLOW_FLAGS; while (flag < limit) { if (PL_strcasecmp(flag->name, flags) == 0) { gVerifyReflowFlags |= flag->bit; found = PR_TRUE; break; } ++flag; } if (! found) error = PR_TRUE; if (! comma) break; *comma = ','; flags = comma + 1; } if (error) ShowVerifyReflowFlags(); } if (VERIFY_REFLOW_ON & gVerifyReflowFlags) { gVerifyReflowEnabled = PR_TRUE; } printf("Note: verifyreflow is %sabled", gVerifyReflowEnabled ? "en" : "dis"); if (VERIFY_REFLOW_NOISY & gVerifyReflowFlags) { printf(" (noisy)"); } if (VERIFY_REFLOW_ALL & gVerifyReflowFlags) { printf(" (all)"); } if (VERIFY_REFLOW_DUMP_COMMANDS & gVerifyReflowFlags) { printf(" (show reflow commands)"); } if (VERIFY_REFLOW_NOISY_RC & gVerifyReflowFlags) { printf(" (noisy reflow commands)"); if (VERIFY_REFLOW_REALLY_NOISY_RC & gVerifyReflowFlags) { printf(" (REALLY noisy reflow commands)"); } } printf("\n"); } #endif return gVerifyReflowEnabled; } void nsIPresShell::SetVerifyReflowEnable(PRBool aEnabled) { gVerifyReflowEnabled = aEnabled; } PRInt32 nsIPresShell::GetVerifyReflowFlags() { #ifdef NS_DEBUG return gVerifyReflowFlags; #else return 0; #endif } //---------------------------------------------------------------------- nsresult NS_NewPresShell(nsIPresShell** aInstancePtrResult) { NS_PRECONDITION(nsnull != aInstancePtrResult, "null ptr"); if (nsnull == aInstancePtrResult) { return NS_ERROR_NULL_POINTER; } PresShell* it = new PresShell(); if (nsnull == it) { return NS_ERROR_OUT_OF_MEMORY; } return it->QueryInterface(NS_GET_IID(nsIPresShell), (void **) aInstancePtrResult); } PresShell::PresShell(): #ifdef IBMBIDI mBidiLevel(BIDI_LEVEL_UNDEFINED), #endif mEnablePrefStyleSheet(PR_TRUE), mScrollingEnabled(PR_TRUE) { NS_INIT_ISUPPORTS(); #ifdef MOZ_REFLOW_PERF mReflowCountMgr = new ReflowCountMgr(); mReflowCountMgr->SetPresContext(mPresContext); mReflowCountMgr->SetPresShell(this); #endif #ifdef IBMBIDI mBidiLevel = BIDI_LEVEL_UNDEFINED; #endif #ifdef PR_LOGGING if (! gLog) gLog = PR_NewLogModule("PresShell"); #endif mSelectionFlags = nsISelectionDisplay::DISPLAY_TEXT; } NS_IMPL_ADDREF(PresShell) NS_IMPL_RELEASE(PresShell) nsresult PresShell::QueryInterface(const nsIID& aIID, void** aInstancePtr) { if (!aInstancePtr) { return NS_ERROR_NULL_POINTER; } if (aIID.Equals(NS_GET_IID(nsIPresShell))) { nsIPresShell* tmp = this; *aInstancePtr = (void*) tmp; } else if (aIID.Equals(NS_GET_IID(nsIDocumentObserver))) { nsIDocumentObserver* tmp = this; *aInstancePtr = (void*) tmp; } else if (aIID.Equals(NS_GET_IID(nsIViewObserver))) { nsIViewObserver* tmp = this; *aInstancePtr = (void*) tmp; } else if (aIID.Equals(NS_GET_IID(nsIFocusTracker))) { nsIFocusTracker* tmp = this; *aInstancePtr = (void*) tmp; } else if (aIID.Equals(NS_GET_IID(nsISelectionController))) { nsISelectionController* tmp = this; *aInstancePtr = (void*) tmp; } else if (aIID.Equals(NS_GET_IID(nsISelectionDisplay))) { nsISelectionController* tmp = this; *aInstancePtr = (void*) tmp; } else if (aIID.Equals(NS_GET_IID(nsISupportsWeakReference))) { nsISupportsWeakReference* tmp = this; *aInstancePtr = (void*) tmp; } else if (aIID.Equals(NS_GET_IID(nsISupports))) { nsIPresShell* tmp = this; nsISupports* tmp2 = tmp; *aInstancePtr = (void*) tmp2; } else { *aInstancePtr = nsnull; return NS_NOINTERFACE; } NS_ADDREF_THIS(); return NS_OK; } PresShell::~PresShell() { if (mStyleSet) { NS_NOTREACHED("Someone did not call nsIPresShell::destroy"); Destroy(); } NS_ASSERTION(mCurrentEventContentStack.Count() == 0, "Huh, event content left on the stack in pres shell dtor!"); NS_IF_RELEASE(mCurrentEventContent); // if we allocated any stack memory free it. FreeDynamicStack(); } /** * Initialize the presentation shell. Create view manager and style * manager. */ NS_IMETHODIMP PresShell::Init(nsIDocument* aDocument, nsIPresContext* aPresContext, nsIViewManager* aViewManager, nsIStyleSet* aStyleSet, nsCompatibility aCompatMode) { NS_PRECONDITION(nsnull != aDocument, "null ptr"); NS_PRECONDITION(nsnull != aPresContext, "null ptr"); NS_PRECONDITION(nsnull != aViewManager, "null ptr"); if ((nsnull == aDocument) || (nsnull == aPresContext) || (nsnull == aViewManager)) { return NS_ERROR_NULL_POINTER; } if (mDocument) { return NS_ERROR_ALREADY_INITIALIZED; } mDocument = dont_QueryInterface(aDocument); mViewManager = aViewManager; // The document viewer owns both view manager and pres shell. mViewManager->SetViewObserver(this); // Bind the context to the presentation shell. mPresContext = aPresContext; aPresContext->SetShell(this); mStyleSet = aStyleSet; // Set the compatibility mode after attaching the pres context and // style set, but before creating any frames. mPresContext->SetCompatibilityMode(aCompatMode); // setup the preference style rules (no forced reflow), and do it // before creating any frames. SetPreferenceStyleRules(PR_FALSE); mHistoryState = nsnull; nsresult result = nsComponentManager::CreateInstance(kFrameSelectionCID, nsnull, NS_GET_IID(nsIFrameSelection), getter_AddRefs(mSelection)); if (NS_FAILED(result)) return result; // Create and initialize the frame manager result = NS_NewFrameManager(&mFrameManager); if (NS_FAILED(result)) { return result; } result = mFrameManager->Init(this, mStyleSet); if (NS_FAILED(result)) { return result; } result = mSelection->Init((nsIFocusTracker *) this, nsnull); if (NS_FAILED(result)) return result; // Important: this has to happen after the selection has been set up #ifdef SHOW_CARET // make the caret nsresult err = NS_NewCaret(getter_AddRefs(mCaret)); if (NS_SUCCEEDED(err)) { mCaret->Init(this); } //SetCaretEnabled(PR_TRUE); // make it show in browser windows #endif //set up selection to be displayed in document nsCOMPtr container; result = aPresContext->GetContainer(getter_AddRefs(container)); if (NS_SUCCEEDED(result) && container) { nsCOMPtr docShell(do_QueryInterface(container, &result)); if (NS_SUCCEEDED(result) && docShell){ PRInt32 docShellType; result = docShell->GetItemType(&docShellType); if (NS_SUCCEEDED(result)){ if (nsIDocShellTreeItem::typeContent == docShellType){ SetDisplaySelection(nsISelectionController::SELECTION_DISABLED); } } } } mEventQueueService = do_GetService(kEventQueueServiceCID, &result); if (!mEventQueueService) { NS_WARNING("couldn't get event queue service"); return NS_ERROR_FAILURE; } if (gMaxRCProcessingTime == -1) { // First, set the defaults gMaxRCProcessingTime = NS_MAX_REFLOW_TIME; gAsyncReflowDuringDocLoad = PR_TRUE; // Get the prefs service nsCOMPtr prefs(do_GetService(kPrefServiceCID, &result)); if (NS_SUCCEEDED(result)) { prefs->GetIntPref("layout.reflow.timeslice", &gMaxRCProcessingTime); prefs->GetBoolPref("layout.reflow.async.duringDocLoad", &gAsyncReflowDuringDocLoad); } } // cache the observation service mObserverService = do_GetService("@mozilla.org/observer-service;1", &result); if (NS_FAILED(result)) { return result; } // cache the drag service so we can check it during reflows mDragService = do_GetService("@mozilla.org/widget/dragservice;1"); #ifdef IBMBIDI mBidiKeyboard = do_GetService("@mozilla.org/widget/bidikeyboard;1"); #endif #ifdef MOZ_REFLOW_PERF // Get the prefs service nsCOMPtr prefs(do_GetService(kPrefServiceCID, &result)); if (NS_SUCCEEDED(result)) { if (mReflowCountMgr != nsnull) { PRBool paintFrameCounts = PR_FALSE; PRBool dumpFrameCounts = PR_FALSE; PRBool dumpFrameByFrameCounts = PR_FALSE; prefs->GetBoolPref("layout.reflow.showframecounts", &paintFrameCounts); prefs->GetBoolPref("layout.reflow.dumpframecounts", &dumpFrameCounts); prefs->GetBoolPref("layout.reflow.dumpframebyframecounts", &dumpFrameByFrameCounts); mReflowCountMgr->SetDumpFrameCounts(dumpFrameCounts); mReflowCountMgr->SetDumpFrameByFrameCounts(dumpFrameByFrameCounts); mReflowCountMgr->SetPaintFrameCounts(paintFrameCounts); } } #endif return NS_OK; } NS_IMETHODIMP PresShell::Destroy() { #ifdef MOZ_REFLOW_PERF DumpReflows(); if (mReflowCountMgr) { delete mReflowCountMgr; mReflowCountMgr = nsnull; } #endif // If our paint suppression timer is still active, kill it. if (mPaintSuppressionTimer) { mPaintSuppressionTimer->Cancel(); mPaintSuppressionTimer = nsnull; } // release our pref style sheet, if we have one still ClearPreferenceStyleRules(); // free our table of anonymous content ReleaseAnonymousContent(); mIsDestroying = PR_TRUE; // Clobber weak leaks in case of re-entrancy during tear down mHistoryState = nsnull; // We can't release all the event content in // mCurrentEventContentStack here since there might be code on the // stack that will release the event content too. Double release // bad! // The frames will be torn down, so remove them from the current // event frame stack (since they'd be dangling references if we'd // leave them in) and null out the mCurrentEventFrame pointer as // well. mCurrentEventFrame = nsnull; PRInt32 i, count = mCurrentEventFrameStack.Count(); for (i = 0; i < count; i++) { mCurrentEventFrameStack.ReplaceElementAt(nsnull, i); } if (mViewManager) { // Disable paints during tear down of the frame tree mViewManager->DisableRefresh(); // Clear the view manager's weak pointer back to |this| in case it // was leaked. mViewManager->SetViewObserver(nsnull); mViewManager = nsnull; } // This shell must be removed from the document before the frame // hierarchy is torn down to avoid finding deleted frames through // this presshell while the frames are being torn down if (mDocument) { mDocument->DeleteShell(this); } // Destroy the frame manager. This will destroy the frame hierarchy if (mFrameManager) { mFrameManager->Destroy(); NS_RELEASE(mFrameManager); } // Let the style set do its cleanup. mStyleSet->Shutdown(); mStyleSet = nsnull; // We hold a reference to the pres context, and it holds a weak link back // to us. To avoid the pres context having a dangling reference, set its // pres shell to NULL if (mPresContext) { mPresContext->SetShell(nsnull); } if (mViewEventListener) { mViewEventListener->SetPresShell((nsIPresShell*)nsnull); NS_RELEASE(mViewEventListener); } // Revoke pending reflow events mReflowEventQueue = nsnull; nsCOMPtr eventQueue; mEventQueueService->GetSpecialEventQueue(nsIEventQueueService::UI_THREAD_EVENT_QUEUE, getter_AddRefs(eventQueue)); eventQueue->RevokeEvents(this); CancelAllReflowCommands(); KillResizeEventTimer(); return NS_OK; } // Dynamic stack memory allocation NS_IMETHODIMP PresShell::PushStackMemory() { if (!mStackArena) { mStackArena = new StackArena(); if (!mStackArena) return NS_ERROR_OUT_OF_MEMORY; } return mStackArena->Push(); } NS_IMETHODIMP PresShell::PopStackMemory() { NS_ENSURE_TRUE(mStackArena, NS_ERROR_UNEXPECTED); return mStackArena->Pop(); } NS_IMETHODIMP PresShell::AllocateStackMemory(size_t aSize, void** aResult) { if (!mStackArena) { mStackArena = new StackArena(); if (!mStackArena) return NS_ERROR_OUT_OF_MEMORY; } return mStackArena->Allocate(aSize, aResult); } void PresShell::FreeDynamicStack() { if (mStackArena) { delete mStackArena; mStackArena = nsnull; } } NS_IMETHODIMP PresShell::FreeFrame(size_t aSize, void* aPtr) { mFrameArena.FreeFrame(aSize, aPtr); return NS_OK; } NS_IMETHODIMP PresShell::AllocateFrame(size_t aSize, void** aResult) { return mFrameArena.AllocateFrame(aSize, aResult); } NS_IMETHODIMP PresShell::GetDocument(nsIDocument** aResult) { NS_PRECONDITION(nsnull != aResult, "null ptr"); if (nsnull == aResult) { return NS_ERROR_NULL_POINTER; } *aResult = mDocument; NS_IF_ADDREF(*aResult); return NS_OK; } NS_IMETHODIMP PresShell::GetPresContext(nsIPresContext** aResult) { NS_PRECONDITION(nsnull != aResult, "null ptr"); if (nsnull == aResult) { return NS_ERROR_NULL_POINTER; } *aResult = mPresContext; NS_IF_ADDREF(*aResult); return NS_OK; } NS_IMETHODIMP PresShell::GetViewManager(nsIViewManager** aResult) { NS_PRECONDITION(nsnull != aResult, "null ptr"); if (nsnull == aResult) { return NS_ERROR_NULL_POINTER; } *aResult = mViewManager; NS_IF_ADDREF(mViewManager); return NS_OK; } NS_IMETHODIMP PresShell::GetStyleSet(nsIStyleSet** aResult) { NS_PRECONDITION(nsnull != aResult, "null ptr"); if (nsnull == aResult) { return NS_ERROR_NULL_POINTER; } *aResult = mStyleSet; NS_IF_ADDREF(*aResult); return NS_OK; } NS_IMETHODIMP PresShell::GetActiveAlternateStyleSheet(nsString& aSheetTitle) { // first non-html sheet in style set that has title if (mStyleSet) { PRInt32 count = mStyleSet->GetNumberOfDocStyleSheets(); PRInt32 index; NS_NAMED_LITERAL_STRING(textHtml, "text/html"); for (index = 0; index < count; index++) { nsIStyleSheet* sheet = mStyleSet->GetDocStyleSheetAt(index); if (nsnull != sheet) { nsAutoString type; sheet->GetType(type); if (PR_FALSE == type.Equals(textHtml)) { nsAutoString title; sheet->GetTitle(title); if (0 < title.Length()) { aSheetTitle = title; index = count; // stop looking } } NS_RELEASE(sheet); } } } return NS_OK; } NS_IMETHODIMP PresShell::SelectAlternateStyleSheet(const nsString& aSheetTitle) { if (mDocument && mStyleSet) { PRInt32 count = 0; mDocument->GetNumberOfStyleSheets(&count); PRInt32 index; NS_NAMED_LITERAL_STRING(textHtml,"text/html"); for (index = 0; index < count; index++) { nsCOMPtr sheet; mDocument->GetStyleSheetAt(index, getter_AddRefs(sheet)); if (sheet) { nsAutoString type; sheet->GetType(type); if (PR_FALSE == type.Equals(textHtml)) { nsAutoString title; sheet->GetTitle(title); if (0 < title.Length()) { if (title.Equals(aSheetTitle)) { mStyleSet->AddDocStyleSheet(sheet, mDocument); } else { mStyleSet->RemoveDocStyleSheet(sheet); } } } } } // We don't need to rebuild the // rule tree, since no rule nodes have been rendered invalid by the // addition of new rule content. They can simply lurk in the tree // until the stylesheet is enabled once more. return ReconstructStyleData(PR_FALSE); } return NS_OK; } NS_IMETHODIMP PresShell::ListAlternateStyleSheets(nsStringArray& aTitleList) { if (mDocument) { PRInt32 count = 0; mDocument->GetNumberOfStyleSheets(&count); PRInt32 index; NS_NAMED_LITERAL_STRING(textHtml,"text/html"); for (index = 0; index < count; index++) { nsCOMPtr sheet; mDocument->GetStyleSheetAt(index, getter_AddRefs(sheet)); if (sheet) { nsAutoString type; sheet->GetType(type); if (PR_FALSE == type.Equals(textHtml)) { nsAutoString title; sheet->GetTitle(title); if (0 < title.Length()) { if (-1 == aTitleList.IndexOf(title)) { aTitleList.AppendString(title); } } } } } } return NS_OK; } NS_IMETHODIMP PresShell::EnablePrefStyleRules(PRBool aEnable, PRUint8 aPrefType/*=0xFF*/) { nsresult result = NS_OK; // capture change in state PRBool bChanging = (mEnablePrefStyleSheet != aEnable) ? PR_TRUE : PR_FALSE; // set to desired state mEnablePrefStyleSheet = aEnable; #ifdef DEBUG_attinasi printf("PrefStyleSheet %s %s\n", mEnablePrefStyleSheet ? "ENABLED" : "DISABLED", bChanging ? "(state toggled)" : "(state unchanged)"); #endif // deal with changing state if(bChanging){ switch (mEnablePrefStyleSheet){ case PR_TRUE: // was off, now on, so create the rules result = SetPreferenceStyleRules(PR_TRUE); break; default : // was on, now off, so clear the rules result = ClearPreferenceStyleRules(); break; } } return result; } NS_IMETHODIMP PresShell::ArePrefStyleRulesEnabled(PRBool& aEnabled) { aEnabled = mEnablePrefStyleSheet; return NS_OK; } NS_IMETHODIMP PresShell::SetPreferenceStyleRules(PRBool aForceReflow) { if (!mDocument) { return NS_ERROR_NULL_POINTER; } nsCOMPtr globalObj; mDocument->GetScriptGlobalObject(getter_AddRefs(globalObj)); // If the document doesn't have a global object there's no need to // notify its presshell about changes to preferences since the // document is in a state where it doesn't matter any more (see // DocumentViewerImpl::Close()). if (!globalObj) { return NS_ERROR_NULL_POINTER; } NS_PRECONDITION(mPresContext, "presContext cannot be null"); if (mPresContext) { nsresult result = NS_OK; // zeroth, make sure this feature is enabled // XXX: may get more granularity later // (i.e. each pref may be controlled independently) if (!mEnablePrefStyleSheet) { #ifdef DEBUG_attinasi printf("PrefStyleSheet disabled\n"); #endif return PR_TRUE; } // first, make sure this is not a chrome shell nsCOMPtr container; result = mPresContext->GetContainer(getter_AddRefs(container)); if (NS_SUCCEEDED(result) && container) { nsCOMPtr docShell(do_QueryInterface(container, &result)); if (NS_SUCCEEDED(result) && docShell){ PRInt32 docShellType; result = docShell->GetItemType(&docShellType); if (NS_SUCCEEDED(result)){ if (nsIDocShellTreeItem::typeChrome == docShellType){ return NS_OK; } } } } if (NS_SUCCEEDED(result)) { #ifdef DEBUG_attinasi printf("Setting Preference Style Rules:\n"); #endif // if here, we need to create rules for the prefs // - this includes the background-color, the text-color, // the link color, the visited link color and the link-underlining // first clear any exising rules result = ClearPreferenceStyleRules(); // now do the color rules if (NS_SUCCEEDED(result)) { result = SetPrefColorRules(); } // now the link rules (must come after the color rules, or links will not be correct color!) // XXX - when there is both an override and agent pref stylesheet this won't matter, // as the color rules will be overrides and the links rules will be agent if (NS_SUCCEEDED(result)) { result = SetPrefLinkRules(); } if (NS_SUCCEEDED(result)) { result = SetPrefFocusRules(); } // update the styleset now that we are done inserting our rules if (NS_SUCCEEDED(result)) { if (mStyleSet) { mStyleSet->NotifyStyleSheetStateChanged(PR_FALSE); } } } #ifdef DEBUG_attinasi printf( "Preference Style Rules set: error=%ld\n", (long)result); #endif if (aForceReflow){ #ifdef NS_DEBUG printf( "*** Forcing reframe! ***\n"); #endif // this is harsh, but without it the new colors don't appear on the current page // Fortunately, it only happens when the prefs change, a rare event. // XXX - determine why the normal PresContext::RemapStyleAndReflow doesn't cut it // XXXldb FIX THIS! ReconstructFrames(); } return result; } return NS_ERROR_NULL_POINTER; } nsresult PresShell::ClearPreferenceStyleRules(void) { nsresult result = NS_OK; if (mPrefStyleSheet) { NS_ASSERTION(mStyleSet, "null styleset entirely unexpected!"); if (mStyleSet) { // remove the sheet from the styleset: // - note that we have to check for success by comparing the count before and after... #ifdef NS_DEBUG PRInt32 numBefore = mStyleSet->GetNumberOfUserStyleSheets(); NS_ASSERTION(numBefore > 0, "no user stylesheets in styleset, but we have one!"); #endif mStyleSet->RemoveUserStyleSheet(mPrefStyleSheet); #ifdef DEBUG_attinasi NS_ASSERTION((numBefore - 1) == mStyleSet->GetNumberOfUserStyleSheets(), "Pref stylesheet was not removed"); printf("PrefStyleSheet removed\n"); #endif // clear the sheet pointer: it is strictly historical now NS_IF_RELEASE(mPrefStyleSheet); } } return result; } nsresult PresShell::CreatePreferenceStyleSheet(void) { NS_ASSERTION(mPrefStyleSheet==nsnull, "prefStyleSheet already exists"); nsresult result = NS_OK; result = nsComponentManager::CreateInstance(kCSSStyleSheetCID,nsnull,NS_GET_IID(nsICSSStyleSheet),(void**)&mPrefStyleSheet); if (NS_SUCCEEDED(result)) { NS_ASSERTION(mPrefStyleSheet, "null but no error"); nsCOMPtr uri; result = NS_NewURI(getter_AddRefs(uri), "about:PreferenceStyleSheet", nsnull); if (NS_SUCCEEDED(result)) { NS_ASSERTION(uri, "null but no error"); result = mPrefStyleSheet->Init(uri); if (NS_SUCCEEDED(result)) { mPrefStyleSheet->SetDefaultNameSpaceID(kNameSpaceID_XHTML); mStyleSet->InsertUserStyleSheetBefore(mPrefStyleSheet, nsnull); } } } else { result = NS_ERROR_OUT_OF_MEMORY; } #ifdef DEBUG_attinasi printf("CreatePrefStyleSheet completed: error=%ld\n",(long)result); #endif return result; } nsresult PresShell::SetPrefColorRules(void) { NS_ASSERTION(mPresContext,"null prescontext not allowed"); if (mPresContext) { nsresult result = NS_OK; PRBool useDocColors = PR_TRUE; // see if we need to create the rules first if (NS_SUCCEEDED(mPresContext->GetCachedBoolPref(kPresContext_UseDocumentColors, useDocColors))) { if (!useDocColors) { #ifdef DEBUG_attinasi printf(" - Creating rules for document colors\n"); #endif // OK, not using document colors, so we have to force the user's colors via style rules if (!mPrefStyleSheet) { result = CreatePreferenceStyleSheet(); } if (NS_SUCCEEDED(result)) { NS_ASSERTION(mPrefStyleSheet, "prefstylesheet should not be null"); nscolor bgColor; nscolor textColor; result = mPresContext->GetDefaultColor(&textColor); if (NS_SUCCEEDED(result)) { result = mPresContext->GetDefaultBackgroundColor(&bgColor); } if (NS_SUCCEEDED(result)) { // get the DOM interface to the stylesheet nsCOMPtr sheet(do_QueryInterface(mPrefStyleSheet,&result)); if (NS_SUCCEEDED(result)) { PRUint32 index = 0; nsAutoString strColor, strBackgroundColor; // create a rule for background and foreground color and // add it to the style sheet // - the rule is !important so it overrides all but author // important rules (when put into an agent stylesheet) and // all (even author important) when put into an override stylesheet /////////////////////////////////////////////////////////////// // - default colors: ':root {color:#RRGGBB !important; // background: #RRGGBB !important;}' ColorToString(textColor,strColor); ColorToString(bgColor,strBackgroundColor); result = sheet->InsertRule(NS_LITERAL_STRING(":root {color:") + strColor + NS_LITERAL_STRING(" !important; ") + NS_LITERAL_STRING("background:") + strBackgroundColor + NS_LITERAL_STRING(" !important; }"), 0,&index); NS_ENSURE_SUCCESS(result, result); /////////////////////////////////////////////////////////////// // - everything else inherits the color, and has transparent background result = sheet->InsertRule(NS_LITERAL_STRING("* {color: inherit !important; background: transparent !important;} "), 0,&index); } } } } } return result; } else { return NS_ERROR_FAILURE; } } nsresult PresShell::SetPrefLinkRules(void) { NS_ASSERTION(mPresContext,"null prescontext not allowed"); if (mPresContext) { nsresult result = NS_OK; if (!mPrefStyleSheet) { result = CreatePreferenceStyleSheet(); } if (NS_SUCCEEDED(result)) { NS_ASSERTION(mPrefStyleSheet, "prefstylesheet should not be null"); // get the DOM interface to the stylesheet nsCOMPtr sheet(do_QueryInterface(mPrefStyleSheet,&result)); if (NS_SUCCEEDED(result)) { #ifdef DEBUG_attinasi printf(" - Creating rules for link and visited colors\n"); #endif // support default link colors: // this means the link colors need to be overridable, // which they are if we put them in the agent stylesheet, // though if using an override sheet this will cause authors grief still // In the agent stylesheet, they are !important when we are ignoring document colors // // XXX: Do active links and visited links get another color? // They are red in the html.css rules, but there is no pref for their color. nscolor linkColor, visitedColor; result = mPresContext->GetDefaultLinkColor(&linkColor); if (NS_SUCCEEDED(result)) { result = mPresContext->GetDefaultVisitedLinkColor(&visitedColor); } if (NS_SUCCEEDED(result)) { // insert a rule to make links the preferred color PRUint32 index = 0; nsAutoString strColor; PRBool useDocColors = PR_TRUE; // see if we need to create the rules first mPresContext->GetCachedBoolPref(kPresContext_UseDocumentColors, useDocColors); /////////////////////////////////////////////////////////////// // - links: '*:link {color: #RRGGBB [!important];}' ColorToString(linkColor,strColor); NS_NAMED_LITERAL_STRING(notImportantStr, "}"); NS_NAMED_LITERAL_STRING(importantStr, "!important}"); const nsAString& ruleClose = useDocColors ? notImportantStr : importantStr; result = sheet->InsertRule(NS_LITERAL_STRING("*:link{color:") + strColor + ruleClose, 0,&index); NS_ENSURE_SUCCESS(result, result); /////////////////////////////////////////////////////////////// // - visited links '*:visited {color: #RRGGBB [!important];}' ColorToString(visitedColor,strColor); // insert the rule result = sheet->InsertRule(NS_LITERAL_STRING("*:visited{color:") + strColor + ruleClose, 0,&index); /////////////////////////////////////////////////////////////// // - active links '*:-moz-any-link {color: red [!important];}' // This has to be here (i.e. we can't just rely on the rule in the UA stylesheet) // because this entire stylesheet is at the user level (not UA level) and so // the two rules above override the rule in the UA stylesheet regardless of the // weights of the respective rules. result = sheet->InsertRule(NS_LITERAL_STRING("*:-moz-any-link:active{color:red") + ruleClose, 0,&index); } if (NS_SUCCEEDED(result)) { PRBool underlineLinks = PR_TRUE; result = mPresContext->GetCachedBoolPref(kPresContext_UnderlineLinks,underlineLinks); if (NS_SUCCEEDED(result)) { // create a rule for underline: on or off PRUint32 index = 0; nsAutoString strRule; if (underlineLinks) { // create a rule to make underlining happen // ':link, :visited {text-decoration:[underline|none];}' // no need for important, we want these to be overridable // NOTE: these must go in the agent stylesheet or they cannot be // overridden by authors #ifdef DEBUG_attinasi printf (" - Creating rules for enabling link underlines\n"); #endif // make a rule to make text-decoration: underline happen for links strRule.Append(NS_LITERAL_STRING("*:-moz-any-link{text-decoration:underline}")); } else { #ifdef DEBUG_attinasi printf (" - Creating rules for disabling link underlines\n"); #endif // make a rule to make text-decoration: none happen for links strRule.Append(NS_LITERAL_STRING("*:-moz-any-link{text-decoration:none}")); } // ...now insert the rule result = sheet->InsertRule(strRule,0,&index); } } } } return result; } else { return NS_ERROR_FAILURE; } } nsresult PresShell::SetPrefFocusRules(void) { NS_ASSERTION(mPresContext,"null prescontext not allowed"); nsresult result = NS_OK; if (!mPresContext) result = NS_ERROR_FAILURE; if (NS_SUCCEEDED(result) && !mPrefStyleSheet) result = CreatePreferenceStyleSheet(); if (NS_SUCCEEDED(result)) { NS_ASSERTION(mPrefStyleSheet, "prefstylesheet should not be null"); // get the DOM interface to the stylesheet nsCOMPtr sheet(do_QueryInterface(mPrefStyleSheet,&result)); if (NS_SUCCEEDED(result)) { PRBool useFocusColors; mPresContext->GetUseFocusColors(useFocusColors); nscolor focusBackground, focusText; result = mPresContext->GetFocusBackgroundColor(&focusBackground); nsresult result2 = mPresContext->GetFocusTextColor(&focusText); if (useFocusColors && NS_SUCCEEDED(result) && NS_SUCCEEDED(result2)) { // insert a rule to make focus the preferred color PRUint32 index = 0; nsAutoString strRule, strColor; /////////////////////////////////////////////////////////////// // - focus: '*:focus ColorToString(focusText,strColor); strRule.Append(NS_LITERAL_STRING("*:focus,*:focus>font {color: ")); strRule.Append(strColor); strRule.Append(NS_LITERAL_STRING(" !important; background-color: ")); ColorToString(focusBackground,strColor); strRule.Append(strColor); strRule.Append(NS_LITERAL_STRING(" !important; } ")); // insert the rules result = sheet->InsertRule(strRule,0,&index); } PRUint8 focusRingWidth = 1; result = mPresContext->GetFocusRingWidth(&focusRingWidth); PRBool focusRingOnAnything; mPresContext->GetFocusRingOnAnything(focusRingOnAnything); if ((NS_SUCCEEDED(result) && focusRingWidth != 1 && focusRingWidth <= 4 ) || focusRingOnAnything) { PRUint32 index = 0; nsAutoString strRule; if (!focusRingOnAnything) strRule.Append(NS_LITERAL_STRING(":link:focus, :visited")); // If we only want focus rings on the normal things like links strRule.Append(NS_LITERAL_STRING(":focus {-moz-outline: ")); // For example 3px dotted WindowText (maximum 4) strRule.AppendInt(focusRingWidth); strRule.Append(NS_LITERAL_STRING("px dotted WindowText !important; } ")); // For example 3px dotted WindowText // insert the rules result = sheet->InsertRule(strRule,0,&index); NS_ENSURE_SUCCESS(result, result); if (focusRingWidth != 1) { // If the focus ring width is different from the default, fix buttons with rings strRule.Assign(NS_LITERAL_STRING("button:-moz-focus-inner, input[type=\"reset\"]:-moz-focus-inner,")); strRule.Append(NS_LITERAL_STRING("input[type=\"button\"]:-moz-focus-inner, ")); strRule.Append(NS_LITERAL_STRING("input[type=\"submit\"]:-moz-focus-inner { padding: 1px 2px 1px 2px; border: ")); strRule.AppendInt(focusRingWidth); strRule.Append(NS_LITERAL_STRING("px dotted transparent !important; } ")); result = sheet->InsertRule(strRule,0,&index); NS_ENSURE_SUCCESS(result, result); strRule.Assign(NS_LITERAL_STRING("button:focus:-moz-focus-inner, input[type=\"reset\"]:focus:-moz-focus-inner,")); strRule.Append(NS_LITERAL_STRING("input[type=\"button\"]:focus:-moz-focus-inner, input[type=\"submit\"]:focus:-moz-focus-inner {")); strRule.Append(NS_LITERAL_STRING("border-color: ButtonText !important; }")); result = sheet->InsertRule(strRule,0,&index); } } } } return result; } NS_IMETHODIMP PresShell::SetDisplaySelection(PRInt16 aToggle) { return mSelection->SetDisplaySelection(aToggle); } NS_IMETHODIMP PresShell::GetDisplaySelection(PRInt16 *aToggle) { return mSelection->GetDisplaySelection(aToggle); } NS_IMETHODIMP PresShell::GetSelection(SelectionType aType, nsISelection **aSelection) { if (!aSelection || !mSelection) return NS_ERROR_NULL_POINTER; return mSelection->GetSelection(aType, aSelection); } NS_IMETHODIMP PresShell::ScrollSelectionIntoView(SelectionType aType, SelectionRegion aRegion, PRBool aIsSynchronous) { if (!mSelection) return NS_ERROR_NULL_POINTER; return mSelection->ScrollSelectionIntoView(aType, aRegion, aIsSynchronous); } NS_IMETHODIMP PresShell::RepaintSelection(SelectionType aType) { if (!mSelection) return NS_ERROR_NULL_POINTER; return mSelection->RepaintSelection(mPresContext, aType); } NS_IMETHODIMP PresShell::GetFrameSelection(nsIFrameSelection** aSelection) { if (!aSelection || !mSelection) return NS_ERROR_NULL_POINTER; *aSelection = mSelection; (*aSelection)->AddRef(); return NS_OK; } // Make shell be a document observer NS_IMETHODIMP PresShell::BeginObservingDocument() { if (mDocument) { mDocument->AddObserver(this); } return NS_OK; } // Make shell stop being a document observer NS_IMETHODIMP PresShell::EndObservingDocument() { mIsDocumentGone = PR_TRUE; if (mDocument) { mDocument->RemoveObserver(this); } if (mSelection){ nsCOMPtr domselection; nsresult result; result = mSelection->GetSelection(nsISelectionController::SELECTION_NORMAL, getter_AddRefs(domselection)); if (NS_FAILED(result)) return result; if (!domselection) return NS_ERROR_UNEXPECTED; mSelection->ShutDown(); } return NS_OK; } #ifdef DEBUG_kipp char* nsPresShell_ReflowStackPointerTop; #endif static void CheckForFocus(nsPIDOMWindow* aOurWindow, nsIFocusController* aFocusController, nsIDocument* aDocument) { // Now that we have a root frame, set focus in to the presshell, but // only do this if our window is currently focused // Restore focus if we're the active window or a parent of a previously // active window. if (aFocusController) { nsCOMPtr focusedWindow; aFocusController->GetFocusedWindow(getter_AddRefs(focusedWindow)); // See if the command dispatcher is holding on to an orphan window. // This happens when you move from an inner frame to an outer frame // (e.g., _parent, _top) if (focusedWindow) { nsCOMPtr domDoc; focusedWindow->GetDocument(getter_AddRefs(domDoc)); if (!domDoc) { // We're pointing to garbage. Go ahead and let this // presshell take the focus. focusedWindow = do_QueryInterface(aOurWindow); aFocusController->SetFocusedWindow(focusedWindow); } } nsCOMPtr domWindow = do_QueryInterface(aOurWindow); if (domWindow == focusedWindow) { PRBool active; aFocusController->GetActive(&active); if(active) { // We need to restore focus to the window. domWindow->Focus(); } } } } nsresult PresShell::NotifyReflowObservers(const char *aData) { if (!aData) { return NS_ERROR_NULL_POINTER; } nsresult result = NS_OK; nsCOMPtr pContainer; nsCOMPtr pDocShell; result = mPresContext->GetContainer( getter_AddRefs( pContainer ) ); if (NS_SUCCEEDED( result ) && pContainer) { pDocShell = do_QueryInterface( pContainer, &result ); if (NS_SUCCEEDED( result ) && pDocShell && mObserverService) { result = mObserverService->NotifyObservers( pDocShell, NS_PRESSHELL_REFLOW_TOPIC, NS_ConvertASCIItoUCS2(aData).get() ); // notice that we don't really care what the observer service returns } } return NS_OK; } static nsresult GetRootScrollFrame(nsIPresContext* aPresContext, nsIFrame* aRootFrame, nsIFrame** aScrollFrame) { // Frames: viewport->scroll->scrollport (Gfx) or viewport->scroll (Native) // Types: viewport->scroll->sroll viewport->scroll // Ensure root frame is a viewport frame *aScrollFrame = nsnull; nsIFrame* theFrame = nsnull; if (aRootFrame) { nsCOMPtr fType; aRootFrame->GetFrameType(getter_AddRefs(fType)); if (fType && (nsLayoutAtoms::viewportFrame == fType.get())) { // If child is scrollframe keep it (native) aRootFrame->FirstChild(aPresContext, nsnull, &theFrame); if (theFrame) { theFrame->GetFrameType(getter_AddRefs(fType)); if (nsLayoutAtoms::scrollFrame == fType.get()) { *aScrollFrame = theFrame; // If the first child of that is scrollframe, use it instead (gfx) theFrame->FirstChild(aPresContext, nsnull, &theFrame); if (theFrame) { theFrame->GetFrameType(getter_AddRefs(fType)); if (nsLayoutAtoms::scrollFrame == fType.get()) { *aScrollFrame = theFrame; } } } } } } return NS_OK; } NS_IMETHODIMP PresShell::InitialReflow(nscoord aWidth, nscoord aHeight) { nsCOMPtr root; mDidInitialReflow = PR_TRUE; #ifdef NS_DEBUG if (VERIFY_REFLOW_NOISY_RC & gVerifyReflowFlags) { nsCOMPtr uri; if (mDocument) { mDocument->GetDocumentURL(getter_AddRefs(uri)); if (uri) { nsCAutoString url; uri->GetSpec(url); printf("*** PresShell::InitialReflow (this=%p, url='%s')\n", (void*)this, url.get()); } } } #endif // notice that we ignore the result NotifyReflowObservers(NS_PRESSHELL_INITIAL_REFLOW); mCaret->EraseCaret(); //StCaretHider caretHider(mCaret); // stack-based class hides caret until dtor. WillCauseReflow(); if (mPresContext) { nsRect r(0, 0, aWidth, aHeight); mPresContext->SetVisibleArea(r); } if (mDocument) { mDocument->GetRootContent(getter_AddRefs(root)); } // Get the root frame from the frame manager nsIFrame* rootFrame; mFrameManager->GetRootFrame(&rootFrame); if (root) { MOZ_TIMER_DEBUGLOG(("Reset and start: Frame Creation: PresShell::InitialReflow(), this=%p\n", this)); MOZ_TIMER_RESET(mFrameCreationWatch); MOZ_TIMER_START(mFrameCreationWatch); CtlStyleWatch(kStyleWatchEnable,mStyleSet); if (!rootFrame) { // Have style sheet processor construct a frame for the // precursors to the root content object's frame mStyleSet->ConstructRootFrame(mPresContext, root, rootFrame); mFrameManager->SetRootFrame(rootFrame); } // Have the style sheet processor construct frame for the root // content object down mStyleSet->ContentInserted(mPresContext, nsnull, root, 0); VERIFY_STYLE_TREE; MOZ_TIMER_DEBUGLOG(("Stop: Frame Creation: PresShell::InitialReflow(), this=%p\n", this)); MOZ_TIMER_STOP(mFrameCreationWatch); CtlStyleWatch(kStyleWatchDisable,mStyleSet); } if (rootFrame) { MOZ_TIMER_DEBUGLOG(("Reset and start: Reflow: PresShell::InitialReflow(), this=%p\n", this)); MOZ_TIMER_RESET(mReflowWatch); MOZ_TIMER_START(mReflowWatch); // Kick off a top-down reflow NS_FRAME_LOG(NS_FRAME_TRACE_CALLS, ("enter nsPresShell::InitialReflow: %d,%d", aWidth, aHeight)); #ifdef NS_DEBUG if (nsIFrameDebug::GetVerifyTreeEnable()) { nsIFrameDebug* frameDebug; if (NS_SUCCEEDED(rootFrame->QueryInterface(NS_GET_IID(nsIFrameDebug), (void**)&frameDebug))) { frameDebug->VerifyTree(); } } #endif #ifdef DEBUG_kipp nsPresShell_ReflowStackPointerTop = (char*) &aWidth; #endif nsRect bounds; mPresContext->GetVisibleArea(bounds); nsSize maxSize(bounds.width, bounds.height); nsHTMLReflowMetrics desiredSize(nsnull); nsReflowStatus status; nsIRenderingContext* rcx = nsnull; nsresult rv=CreateRenderingContext(rootFrame, &rcx); if (NS_FAILED(rv)) return rv; mIsReflowing = PR_TRUE; nsHTMLReflowState reflowState(mPresContext, rootFrame, eReflowReason_Initial, rcx, maxSize); rootFrame->WillReflow(mPresContext); nsContainerFrame::PositionFrameView(mPresContext, rootFrame); rootFrame->Reflow(mPresContext, desiredSize, reflowState, status); rootFrame->SizeTo(mPresContext, desiredSize.width, desiredSize.height); mPresContext->SetVisibleArea(nsRect(0,0,desiredSize.width,desiredSize.height)); nsIView* view; rootFrame->GetView(mPresContext, &view); if (view) { nsContainerFrame::SyncFrameViewAfterReflow(mPresContext, rootFrame, view, nsnull); } rootFrame->DidReflow(mPresContext, nsnull, NS_FRAME_REFLOW_FINISHED); #ifdef NS_DEBUG if (nsIFrameDebug::GetVerifyTreeEnable()) { nsIFrameDebug* frameDebug; if (NS_SUCCEEDED(rootFrame->QueryInterface(NS_GET_IID(nsIFrameDebug), (void**)&frameDebug))) { frameDebug->VerifyTree(); } } #endif VERIFY_STYLE_TREE; NS_IF_RELEASE(rcx); NS_FRAME_LOG(NS_FRAME_TRACE_CALLS, ("exit nsPresShell::InitialReflow")); MOZ_TIMER_DEBUGLOG(("Stop: Reflow: PresShell::InitialReflow(), this=%p\n", this)); MOZ_TIMER_STOP(mReflowWatch); mIsReflowing = PR_FALSE; } DidCauseReflow(); if (mViewManager && mCaret && !mViewEventListener) { nsIScrollableView* scrollingView = nsnull; mViewManager->GetRootScrollableView(&scrollingView); if (scrollingView) { mViewEventListener = new PresShellViewEventListener; if (!mViewEventListener) return NS_ERROR_OUT_OF_MEMORY; NS_ADDREF(mViewEventListener); mViewEventListener->SetPresShell(this); scrollingView->AddScrollPositionListener((nsIScrollPositionListener *)mViewEventListener); mViewManager->AddCompositeListener((nsICompositeListener *)mViewEventListener); } } // For printing, we just immediately unsuppress. PRBool isPaginated = PR_FALSE; mPresContext->IsPaginated(&isPaginated); if (!isPaginated) { // Kick off a one-shot timer based off our pref value. When this timer // fires, if painting is still locked down, then we will go ahead and // trigger a full invalidate and allow painting to proceed normally. mPaintingSuppressed = PR_TRUE; mPaintSuppressionTimer = do_CreateInstance("@mozilla.org/timer;1"); if (!mPaintSuppressionTimer) // Uh-oh. We must be out of memory. No point in keeping painting locked down. mPaintingSuppressed = PR_FALSE; else { // Initialize the timer. PRInt32 delay = PAINTLOCK_EVENT_DELAY; // Use this value if we fail to get the pref value. nsCOMPtr prefs(do_GetService(kPrefServiceCID)); if (prefs) prefs->GetIntPref("nglayout.initialpaint.delay", &delay); mPaintSuppressionTimer->Init(sPaintSuppressionCallback, this, delay, PR_FALSE); } } return NS_OK; //XXX this needs to be real. MMP } void PresShell::sPaintSuppressionCallback(nsITimer *aTimer, void* aPresShell) { PresShell* self = NS_STATIC_CAST(PresShell*, aPresShell); if (self) self->UnsuppressPainting(); } NS_IMETHODIMP PresShell::ResizeReflow(nscoord aWidth, nscoord aHeight) { PRBool firstReflow = PR_FALSE; // notice that we ignore the result NotifyReflowObservers(NS_PRESSHELL_RESIZE_REFLOW); mViewManager->CacheWidgetChanges(PR_TRUE); mCaret->EraseCaret(); //StCaretHider caretHider(mCaret); // stack-based class hides caret until dtor. WillCauseReflow(); if (mPresContext) { nsRect r(0, 0, aWidth, aHeight); mPresContext->SetVisibleArea(r); } // If we don't have a root frame yet, that means we haven't had our initial // reflow... nsIFrame* rootFrame; mFrameManager->GetRootFrame(&rootFrame); if (rootFrame) { // Kick off a top-down reflow NS_FRAME_LOG(NS_FRAME_TRACE_CALLS, ("enter nsPresShell::ResizeReflow: %d,%d", aWidth, aHeight)); #ifdef NS_DEBUG if (nsIFrameDebug::GetVerifyTreeEnable()) { nsIFrameDebug* frameDebug; if (NS_SUCCEEDED(rootFrame->QueryInterface(NS_GET_IID(nsIFrameDebug), (void**)&frameDebug))) { frameDebug->VerifyTree(); } } #endif #ifdef DEBUG_kipp nsPresShell_ReflowStackPointerTop = (char*) &aWidth; #endif nsRect bounds; mPresContext->GetVisibleArea(bounds); nsSize maxSize(bounds.width, bounds.height); nsHTMLReflowMetrics desiredSize(nsnull); nsReflowStatus status; nsIRenderingContext* rcx = nsnull; nsresult rv=CreateRenderingContext(rootFrame, &rcx); if (NS_FAILED(rv)) return rv; nsHTMLReflowState reflowState(mPresContext, rootFrame, eReflowReason_Resize, rcx, maxSize); rootFrame->WillReflow(mPresContext); nsContainerFrame::PositionFrameView(mPresContext, rootFrame); rootFrame->Reflow(mPresContext, desiredSize, reflowState, status); rootFrame->SizeTo(mPresContext, desiredSize.width, desiredSize.height); mPresContext->SetVisibleArea(nsRect(0,0,desiredSize.width,desiredSize.height)); nsIView* view; rootFrame->GetView(mPresContext, &view); if (view) { nsContainerFrame::SyncFrameViewAfterReflow(mPresContext, rootFrame, view, nsnull); } rootFrame->DidReflow(mPresContext, nsnull, NS_FRAME_REFLOW_FINISHED); #ifdef NS_DEBUG if (nsIFrameDebug::GetVerifyTreeEnable()) { nsIFrameDebug* frameDebug; if (NS_SUCCEEDED(rootFrame->QueryInterface(NS_GET_IID(nsIFrameDebug), (void**)&frameDebug))) { frameDebug->VerifyTree(); } } #endif VERIFY_STYLE_TREE; NS_IF_RELEASE(rcx); NS_FRAME_LOG(NS_FRAME_TRACE_CALLS, ("exit nsPresShell::ResizeReflow")); // XXX if debugging then we should assert that the cache is empty } else { firstReflow = PR_TRUE; #ifdef NOISY printf("PresShell::ResizeReflow: null root frame\n"); #endif } DidCauseReflow(); // if the proper flag is set, VerifyReflow now #ifdef NS_DEBUG if (GetVerifyReflowEnable() && (VERIFY_REFLOW_DURING_RESIZE_REFLOW & gVerifyReflowFlags)) { mInVerifyReflow = PR_TRUE; /*PRBool ok = */VerifyIncrementalReflow(); mInVerifyReflow = PR_FALSE; } #endif mViewManager->CacheWidgetChanges(PR_FALSE); HandlePostedDOMEvents(); HandlePostedAttributeChanges(); HandlePostedReflowCallbacks(); if (!firstReflow) { //Set resize event timer CreateResizeEventTimer(); } return NS_OK; //XXX this needs to be real. MMP } #define RESIZE_EVENT_DELAY 200 void PresShell::CreateResizeEventTimer () { KillResizeEventTimer(); if (mIsDocumentGone) return; mResizeEventTimer = do_CreateInstance("@mozilla.org/timer;1"); if (mResizeEventTimer) { mResizeEventTimer->Init(sResizeEventCallback, this, RESIZE_EVENT_DELAY, PR_TRUE); } } void PresShell::KillResizeEventTimer() { if(mResizeEventTimer) { mResizeEventTimer->Cancel(); mResizeEventTimer = nsnull; } } void PresShell::sResizeEventCallback(nsITimer *aTimer, void* aPresShell) { PresShell* self = NS_STATIC_CAST(PresShell*, aPresShell); if (self) { self->FireResizeEvent(); } } void PresShell::FireResizeEvent() { if (mIsDocumentGone) return; //Send resize event from here. nsEvent event; nsEventStatus status = nsEventStatus_eIgnore; event.eventStructType = NS_EVENT; event.message = NS_RESIZE_EVENT; event.time = 0; nsCOMPtr globalObj; mDocument->GetScriptGlobalObject(getter_AddRefs(globalObj)); if (globalObj) { globalObj->HandleDOMEvent(mPresContext, &event, nsnull, NS_EVENT_FLAG_INIT, &status); } } NS_IMETHODIMP PresShell::ScrollFrameIntoView(nsIFrame *aFrame) { if (!aFrame) return NS_ERROR_NULL_POINTER; // Before we scroll the frame into view, ask the command dispatcher // if we're resetting focus because a window just got an activate // event. If we are, we do not want to scroll the frame into view. // Example: The user clicks on an anchor, and then deactivates the // window. When they reactivate the window, the expected behavior // is not for the anchor link to scroll back into view. That is what // this check is preventing. nsCOMPtr content; aFrame->GetContent(getter_AddRefs(content)); if(content) { nsCOMPtr document; content->GetDocument(*getter_AddRefs(document)); if(document){ nsCOMPtr focusController; nsCOMPtr ourGlobal; document->GetScriptGlobalObject(getter_AddRefs(ourGlobal)); nsCOMPtr ourWindow = do_QueryInterface(ourGlobal); if(ourWindow) { ourWindow->GetRootFocusController(getter_AddRefs(focusController)); if (focusController) { PRBool dontScroll; focusController->GetSuppressFocusScroll(&dontScroll); if(dontScroll) return NS_OK; } } } } if (IsScrollingEnabled()) return ScrollFrameIntoView(aFrame, NS_PRESSHELL_SCROLL_ANYWHERE, NS_PRESSHELL_SCROLL_ANYWHERE); return NS_OK; } NS_IMETHODIMP PresShell::SetIgnoreFrameDestruction(PRBool aIgnore) { mIgnoreFrameDestruction = aIgnore; return NS_OK; } NS_IMETHODIMP PresShell::NotifyDestroyingFrame(nsIFrame* aFrame) { if (!mIgnoreFrameDestruction) { // Cancel any pending reflow commands targeted at this frame CancelReflowCommandInternal(aFrame, nsnull); // Notify the frame manager if (mFrameManager) { mFrameManager->NotifyDestroyingFrame(aFrame); } } return NS_OK; } NS_IMETHODIMP PresShell::GetFrameManager(nsIFrameManager** aFrameManager) const { *aFrameManager = mFrameManager; NS_IF_ADDREF(mFrameManager); return NS_OK; } NS_IMETHODIMP PresShell::GetCaret(nsICaret **outCaret) { if (!outCaret || !mCaret) return NS_ERROR_NULL_POINTER; return mCaret->QueryInterface(NS_GET_IID(nsICaret), (void **)outCaret); } NS_IMETHODIMP PresShell::SetCaretEnabled(PRBool aInEnable) { nsresult result = NS_OK; PRBool oldEnabled = mCaretEnabled; mCaretEnabled = aInEnable; if (mCaret && (mCaretEnabled != oldEnabled)) { /* Don't change the caret's selection here! This was an evil side-effect of SetCaretEnabled() nsCOMPtr domSel; if (NS_SUCCEEDED(GetSelection(nsISelectionController::SELECTION_NORMAL, getter_AddRefs(domSel))) && domSel) mCaret->SetCaretDOMSelection(domSel); */ result = mCaret->SetCaretVisible(mCaretEnabled); } return result; } NS_IMETHODIMP PresShell::SetCaretWidth(PRInt16 pixels) { return mCaret->SetCaretWidth(pixels); } NS_IMETHODIMP PresShell::SetCaretReadOnly(PRBool aReadOnly) { return mCaret->SetCaretReadOnly(aReadOnly); return NS_ERROR_FAILURE; } NS_IMETHODIMP PresShell::GetCaretEnabled(PRBool *aOutEnabled) { if (!aOutEnabled) { return NS_ERROR_INVALID_ARG; } *aOutEnabled = mCaretEnabled; return NS_OK; } NS_IMETHODIMP PresShell::SetSelectionFlags(PRInt16 aInEnable) { mSelectionFlags = aInEnable; return NS_OK; } NS_IMETHODIMP PresShell::GetSelectionFlags(PRInt16 *aOutEnable) { if (!aOutEnable) return NS_ERROR_INVALID_ARG; *aOutEnable = mSelectionFlags; return NS_OK; } //implementation of nsISelectionController NS_IMETHODIMP PresShell::CharacterMove(PRBool aForward, PRBool aExtend) { return mSelection->CharacterMove(aForward, aExtend); } NS_IMETHODIMP PresShell::WordMove(PRBool aForward, PRBool aExtend) { return mSelection->WordMove(aForward, aExtend); } NS_IMETHODIMP PresShell::LineMove(PRBool aForward, PRBool aExtend) { nsresult result = mSelection->LineMove(aForward, aExtend); // if we cant go down/up any more we must then move caret completely to // end/beginning respectively. if (NS_FAILED(result)) result = CompleteMove(aForward,aExtend); return result; } NS_IMETHODIMP PresShell::IntraLineMove(PRBool aForward, PRBool aExtend) { return mSelection->IntraLineMove(aForward, aExtend); } NS_IMETHODIMP PresShell::PageMove(PRBool aForward, PRBool aExtend) { #if 1 return ScrollPage(aForward); #else nsCOMPtr viewManager; nsresult result = GetViewManager(getter_AddRefs(viewManager)); if (NS_SUCCEEDED(result) && viewManager) { nsIScrollableView *scrollView; result = viewManager->GetRootScrollableView(&scrollView); if (NS_SUCCEEDED(result) && scrollView) { } } return result; #endif //0 } NS_IMETHODIMP PresShell::ScrollPage(PRBool aForward) { nsCOMPtr viewManager; nsresult result = GetViewManager(getter_AddRefs(viewManager)); if (NS_SUCCEEDED(result) && viewManager) { nsIScrollableView *scrollView; result = viewManager->GetRootScrollableView(&scrollView); if (NS_SUCCEEDED(result) && scrollView) { scrollView->ScrollByPages(aForward ? 1 : -1); } } return result; } NS_IMETHODIMP PresShell::ScrollLine(PRBool aForward) { nsCOMPtr viewManager; nsresult result = GetViewManager(getter_AddRefs(viewManager)); if (NS_SUCCEEDED(result) && viewManager) { nsIScrollableView *scrollView; result = viewManager->GetRootScrollableView(&scrollView); if (NS_SUCCEEDED(result) && scrollView) { #ifdef MOZ_WIDGET_COCOA // Emulate the Mac IE behavior of scrolling a minimum of 2 lines // rather than 1. This vastly improves scrolling speed. scrollView->ScrollByLines(0, aForward ? 2 : -2); #else scrollView->ScrollByLines(0, aForward ? 1 : -1); #endif //NEW FOR LINES // force the update to happen now, otherwise multiple scrolls can // occur before the update is processed. (bug #7354) // I'd use Composite here, but it doesn't always work. // vm->Composite(); viewManager->ForceUpdate(); } } return result; } NS_IMETHODIMP PresShell::ScrollHorizontal(PRBool aLeft) { nsCOMPtr viewManager; nsresult result = GetViewManager(getter_AddRefs(viewManager)); if (NS_SUCCEEDED(result) && viewManager) { nsIScrollableView *scrollView; result = viewManager->GetRootScrollableView(&scrollView); if (NS_SUCCEEDED(result) && scrollView) { scrollView->ScrollByLines(aLeft ? -1 : 1, 0); //NEW FOR LINES // force the update to happen now, otherwise multiple scrolls can // occur before the update is processed. (bug #7354) // I'd use Composite here, but it doesn't always work. // vm->Composite(); viewManager->ForceUpdate(); } } return result; } NS_IMETHODIMP PresShell::CompleteScroll(PRBool aForward) { nsCOMPtr viewManager; nsresult result = GetViewManager(getter_AddRefs(viewManager)); if (NS_SUCCEEDED(result) && viewManager) { nsIScrollableView *scrollView; result = viewManager->GetRootScrollableView(&scrollView); if (NS_SUCCEEDED(result) && scrollView) { scrollView->ScrollByWhole(!aForward);//TRUE = top, aForward TRUE=bottom } } return result; } NS_IMETHODIMP PresShell::CompleteMove(PRBool aForward, PRBool aExtend) { nsCOMPtr document; if (NS_FAILED(GetDocument(getter_AddRefs(document))) || !document) return NS_ERROR_FAILURE; nsCOMPtrnodeList; NS_NAMED_LITERAL_STRING(bodyTag, "body"); nsCOMPtr doc = do_QueryInterface(document); if (!doc) return NS_ERROR_FAILURE; nsresult result = doc->GetElementsByTagName(bodyTag, getter_AddRefs(nodeList)); if (NS_FAILED(result) ||!nodeList) return result?result:NS_ERROR_FAILURE; PRUint32 count; nodeList->GetLength(&count); if (count < 1) return NS_ERROR_FAILURE; // Use the first body node in the list: nsCOMPtr node; result = nodeList->Item(0, getter_AddRefs(node)); if (NS_SUCCEEDED(result) && node) { //return node->QueryInterface(NS_GET_IID(nsIDOMElement), (void **)aBodyElement); // Is above equivalent to this: nsCOMPtr bodyElement = do_QueryInterface(node); if (bodyElement) { nsCOMPtr bodyContent = do_QueryInterface(bodyElement); if (bodyContent) { nsIFrame *frame = nsnull; result = GetPrimaryFrameFor(bodyContent, &frame); if (frame) { PRInt8 outsideLimit = -1;//search from beginning nsPeekOffsetStruct pos; pos.mAmount = eSelectLine; pos.mTracker = this; pos.mContentOffset = 0; pos.mContentOffsetEnd = 0; pos.mScrollViewStop = PR_FALSE;//dont stop on scrolled views. if (aForward) { outsideLimit = 1;//search from end nsRect rect; frame->GetRect(rect); pos.mDesiredX = rect.width * 2;//search way off to right of line pos.mDirection = eDirPrevious; //seach backwards from the end } else { pos.mDesiredX = -1; //start before line pos.mDirection = eDirNext; //search forwards from before beginning } do { result = nsFrame::GetNextPrevLineFromeBlockFrame(mPresContext, &pos, frame, 0, //irrelavent since we set outsidelimit outsideLimit ); if (NS_COMFALSE == result) //NS_COMFALSE should ALSO break break; if (NS_OK != result || !pos.mResultFrame ) return result?result:NS_ERROR_FAILURE; nsCOMPtr newIt; //check to see if this is ANOTHER blockframe inside the other one if so then call into its lines result = pos.mResultFrame->QueryInterface(NS_GET_IID(nsILineIteratorNavigator),getter_AddRefs(newIt)); if (NS_SUCCEEDED(result) && newIt) frame = pos.mResultFrame; } while (NS_SUCCEEDED(result));//end 'do' result = mSelection->HandleClick(pos.mResultContent ,pos.mContentOffset ,pos.mContentOffsetEnd ,aExtend, PR_FALSE, pos.mPreferLeft); } // if we got this far, attempt to scroll no matter what the above result is CompleteScroll(aForward); } } } return result; } NS_IMETHODIMP PresShell::SelectAll() { return mSelection->SelectAll(); } NS_IMETHODIMP PresShell::CheckVisibility(nsIDOMNode *node, PRInt16 startOffset, PRInt16 EndOffset, PRBool *_retval) { if (!node || startOffset>EndOffset || !_retval || startOffset<0 || EndOffset<0) return NS_ERROR_INVALID_ARG; *_retval = PR_FALSE; //initialize return parameter nsCOMPtr content(do_QueryInterface(node)); if (!content) return NS_ERROR_FAILURE; nsIFrame *frame; nsresult result = GetPrimaryFrameFor(content,&frame); if (NS_FAILED(result)) //failure is taken as a no. return result; if (!frame) //no frame to look at so it must not be visible return NS_OK; //start process now to go through all frames to find startOffset. then check chars after that to see //if anything until EndOffset is visible. PRBool finished = PR_FALSE; frame->CheckVisibility(mPresContext,startOffset,EndOffset,PR_TRUE,&finished, _retval); return NS_OK;//dont worry about other return val } //end implementations nsISelectionController NS_IMETHODIMP PresShell::StyleChangeReflow() { // notify any presshell observers about the reflow. // notice that we ignore the result NotifyReflowObservers(NS_PRESSHELL_STYLE_CHANGE_REFLOW); WillCauseReflow(); nsIFrame* rootFrame; mFrameManager->GetRootFrame(&rootFrame); if (rootFrame) { // Kick off a top-down reflow NS_FRAME_LOG(NS_FRAME_TRACE_CALLS, ("enter nsPresShell::StyleChangeReflow")); #ifdef NS_DEBUG if (nsIFrameDebug::GetVerifyTreeEnable()) { nsIFrameDebug* frameDebug; if (NS_SUCCEEDED(rootFrame->QueryInterface(NS_GET_IID(nsIFrameDebug), (void**)&frameDebug))) { frameDebug->VerifyTree(); } } #endif nsRect bounds; mPresContext->GetVisibleArea(bounds); nsSize maxSize(bounds.width, bounds.height); nsHTMLReflowMetrics desiredSize(nsnull); nsReflowStatus status; nsIRenderingContext* rcx = nsnull; nsresult rv=CreateRenderingContext(rootFrame, &rcx); if (NS_FAILED(rv)) return rv; nsHTMLReflowState reflowState(mPresContext, rootFrame, eReflowReason_StyleChange, rcx, maxSize); rootFrame->WillReflow(mPresContext); nsContainerFrame::PositionFrameView(mPresContext, rootFrame); rootFrame->Reflow(mPresContext, desiredSize, reflowState, status); rootFrame->SizeTo(mPresContext, desiredSize.width, desiredSize.height); mPresContext->SetVisibleArea(nsRect(0,0,desiredSize.width,desiredSize.height)); nsIView* view; rootFrame->GetView(mPresContext, &view); if (view) { nsContainerFrame::SyncFrameViewAfterReflow(mPresContext, rootFrame, view, nsnull); } rootFrame->DidReflow(mPresContext, nsnull, NS_FRAME_REFLOW_FINISHED); #ifdef NS_DEBUG if (nsIFrameDebug::GetVerifyTreeEnable()) { nsIFrameDebug* frameDebug; if (NS_SUCCEEDED(rootFrame->QueryInterface(NS_GET_IID(nsIFrameDebug), (void**)&frameDebug))) { frameDebug->VerifyTree(); } } #endif VERIFY_STYLE_TREE; NS_IF_RELEASE(rcx); NS_FRAME_LOG(NS_FRAME_TRACE_CALLS, ("exit nsPresShell::StyleChangeReflow")); } DidCauseReflow(); return NS_OK; //XXX this needs to be real. MMP } NS_IMETHODIMP PresShell::GetRootFrame(nsIFrame** aResult) const { return mFrameManager->GetRootFrame(aResult); } NS_IMETHODIMP PresShell::GetPageSequenceFrame(nsIPageSequenceFrame** aResult) const { NS_PRECONDITION(nsnull != aResult, "null ptr"); if (nsnull == aResult) { return NS_ERROR_NULL_POINTER; } nsIFrame* rootFrame; nsIFrame* child; nsIPageSequenceFrame* pageSequence = nsnull; // The page sequence frame is the child of the rootFrame mFrameManager->GetRootFrame(&rootFrame); rootFrame->FirstChild(mPresContext, nsnull, &child); if (nsnull != child) { // but the child could be wrapped in a scrollframe so lets check nsIScrollableFrame* scrollable = nsnull; nsresult rv = child->QueryInterface(NS_GET_IID(nsIScrollableFrame), (void **)&scrollable); if (NS_SUCCEEDED(rv) && (nsnull != scrollable)) { // if it is then get the scrolled frame scrollable->GetScrolledFrame(nsnull, child); } else { nsCOMPtr ppContext = do_QueryInterface(mPresContext); if (ppContext) { child->FirstChild(mPresContext, nsnull, &child); } } // make sure the child is a pageSequence rv = child->QueryInterface(NS_GET_IID(nsIPageSequenceFrame), (void**)&pageSequence); NS_ASSERTION(NS_SUCCEEDED(rv),"Error: Could not find pageSequence!"); *aResult = pageSequence; return NS_OK; } *aResult = nsnull; return NS_ERROR_FAILURE; } NS_IMETHODIMP PresShell::BeginUpdate(nsIDocument *aDocument) { mUpdateCount++; return NS_OK; } NS_IMETHODIMP PresShell::EndUpdate(nsIDocument *aDocument) { NS_PRECONDITION(0 != mUpdateCount, "too many EndUpdate's"); if (--mUpdateCount == 0) { // XXX do something here } return NS_OK; } NS_IMETHODIMP PresShell::BeginLoad(nsIDocument *aDocument) { #ifdef MOZ_PERF_METRICS // Reset style resolution stopwatch maintained by style set MOZ_TIMER_DEBUGLOG(("Reset: Style Resolution: PresShell::BeginLoad(), this=%p\n", this)); CtlStyleWatch(kStyleWatchReset,mStyleSet); #endif mDocumentLoading = PR_TRUE; return NS_OK; } NS_IMETHODIMP PresShell::EndLoad(nsIDocument *aDocument) { // Restore frame state for the root scroll frame nsIFrame* rootFrame = nsnull; GetRootFrame(&rootFrame); nsCOMPtr historyState = do_QueryReferent(mHistoryState); if (rootFrame && historyState) { nsIFrame* scrollFrame = nsnull; GetRootScrollFrame(mPresContext, rootFrame, &scrollFrame); if (scrollFrame) { mFrameManager->RestoreFrameStateFor(mPresContext, scrollFrame, historyState, nsIStatefulFrame::eDocumentScrollState); } } #ifdef MOZ_PERF_METRICS // Dump reflow, style resolution and frame construction times here. MOZ_TIMER_DEBUGLOG(("Stop: Reflow: PresShell::EndLoad(), this=%p\n", this)); MOZ_TIMER_STOP(mReflowWatch); MOZ_TIMER_LOG(("Reflow time (this=%p): ", this)); MOZ_TIMER_PRINT(mReflowWatch); MOZ_TIMER_DEBUGLOG(("Stop: Frame Creation: PresShell::EndLoad(), this=%p\n", this)); MOZ_TIMER_STOP(mFrameCreationWatch); MOZ_TIMER_LOG(("Frame construction plus style resolution time (this=%p): ", this)); MOZ_TIMER_PRINT(mFrameCreationWatch); // Print style resolution stopwatch maintained by style set MOZ_TIMER_DEBUGLOG(("Stop: Style Resolution: PresShell::EndLoad(), this=%p\n", this)); CtlStyleWatch(kStyleWatchStop|kStyleWatchDisable, mStyleSet); MOZ_TIMER_LOG(("Style resolution time (this=%p): ", this)); CtlStyleWatch(kStyleWatchPrint, mStyleSet); #endif mDocumentLoading = PR_FALSE; return NS_OK; } NS_IMETHODIMP PresShell::BeginReflow(nsIDocument *aDocument, nsIPresShell* aShell) { return NS_OK; } NS_IMETHODIMP PresShell::EndReflow(nsIDocument *aDocument, nsIPresShell* aShell) { return NS_OK; } // aReflowCommand is considered to be already in the queue if the // frame it targets is targeted by a pre-existing reflow command in // the queue. PRBool PresShell::AlreadyInQueue(nsHTMLReflowCommand* aReflowCommand, nsVoidArray& aQueue) { PRInt32 i, n = aQueue.Count(); nsIFrame* targetFrame; PRBool inQueue = PR_FALSE; if (NS_SUCCEEDED(aReflowCommand->GetTarget(targetFrame))) { // Iterate over the reflow commands and compare the targeted frames. for (i = 0; i < n; i++) { nsHTMLReflowCommand* rc = (nsHTMLReflowCommand*) aQueue.ElementAt(i); if (rc) { nsIFrame* targetOfQueuedRC; if (NS_SUCCEEDED(rc->GetTarget(targetOfQueuedRC))) { nsReflowType RCType; nsReflowType queuedRCType; aReflowCommand->GetType(RCType); rc->GetType(queuedRCType); if (targetFrame == targetOfQueuedRC && RCType == queuedRCType) { #ifdef DEBUG if (VERIFY_REFLOW_NOISY_RC & gVerifyReflowFlags) { printf("*** PresShell::AlreadyInQueue(): Discarding reflow command: this=%p\n", (void*)this); aReflowCommand->List(stdout); } #endif inQueue = PR_TRUE; break; } } } } } return inQueue; } NS_IMETHODIMP PresShell::AppendReflowCommand(nsHTMLReflowCommand* aReflowCommand) { // If we've not yet done the initial reflow, then don't bother // enqueuing a reflow command yet. if (! mDidInitialReflow) return NS_OK; #ifdef DEBUG //printf("gShellCounter: %d\n", gShellCounter++); if (mInVerifyReflow) { return NS_OK; } if (VERIFY_REFLOW_NOISY_RC & gVerifyReflowFlags) { printf("\nPresShell@%p: adding reflow command\n", (void*)this); aReflowCommand->List(stdout); if (VERIFY_REFLOW_REALLY_NOISY_RC & gVerifyReflowFlags) { printf("Current content model:\n"); nsCOMPtr rootContent; mDocument->GetRootContent(getter_AddRefs(rootContent)); if (rootContent) { rootContent->List(stdout, 0); } } } #endif // Add the reflow command to the queue nsresult rv = NS_OK; if (!AlreadyInQueue(aReflowCommand, mReflowCommands)) { rv = (mReflowCommands.AppendElement(aReflowCommand) ? NS_OK : NS_ERROR_OUT_OF_MEMORY); ReflowCommandAdded(aReflowCommand); } else { // We're not going to process this reflow command. delete aReflowCommand; } // For async reflow during doc load, post a reflow event if we are not batching reflow commands. // For sync reflow during doc load, post a reflow event if we are not batching reflow commands // and the document is not loading. if ((gAsyncReflowDuringDocLoad && !mBatchReflows) || (!gAsyncReflowDuringDocLoad && !mBatchReflows && !mDocumentLoading)) { // If we're in the middle of a drag, process it right away (needed for mac, // might as well do it on all platforms just to keep the code paths the same). if ( !IsDragInProgress() ) PostReflowEvent(); } return rv; } // // IsDragInProgress // // Ask the drag service if we're in the middle of a drag // PRBool PresShell :: IsDragInProgress ( ) const { PRBool dragInProgress = PR_FALSE; if ( mDragService ) { nsCOMPtr session; mDragService->GetCurrentSession ( getter_AddRefs(session) ); if ( session ) dragInProgress = PR_TRUE; } return dragInProgress; } // IsDragInProgress NS_IMETHODIMP PresShell::CancelReflowCommandInternal(nsIFrame* aTargetFrame, nsReflowType* aCmdType, PRBool aProcessDummyLayoutRequest) { PRInt32 i, n = mReflowCommands.Count(); for (i = 0; i < n; i++) { nsHTMLReflowCommand* rc = (nsHTMLReflowCommand*) mReflowCommands.ElementAt(i); if (rc) { nsIFrame* target; if (NS_SUCCEEDED(rc->GetTarget(target))) { if (target == aTargetFrame) { if (aCmdType != NULL) { // If aCmdType is specified, only remove reflow commands // of that type nsReflowType type; if (NS_SUCCEEDED(rc->GetType(type))) { if (type != *aCmdType) continue; } } #ifdef DEBUG if (VERIFY_REFLOW_NOISY_RC & gVerifyReflowFlags) { printf("PresShell: removing rc=%p for frame ", (void*)rc); nsFrame::ListTag(stdout, aTargetFrame); printf("\n"); } #endif mReflowCommands.RemoveElementAt(i); ReflowCommandRemoved(rc); delete rc; n--; i--; continue; } } } } if (aProcessDummyLayoutRequest) { DoneRemovingReflowCommands(); } return NS_OK; } NS_IMETHODIMP PresShell::CancelReflowCommand(nsIFrame* aTargetFrame, nsReflowType* aCmdType) { return CancelReflowCommandInternal(aTargetFrame, aCmdType); } NS_IMETHODIMP PresShell::CancelAllReflowCommands() { PRInt32 n = mReflowCommands.Count(); nsHTMLReflowCommand* rc; PRInt32 i; for (i = 0; i < n; i++) { rc = NS_STATIC_CAST(nsHTMLReflowCommand*, mReflowCommands.ElementAt(i)); ReflowCommandRemoved(rc); delete rc; } NS_ASSERTION(n == mReflowCommands.Count(),"reflow command list changed during cancel!"); mReflowCommands.Clear(); DoneRemovingReflowCommands(); return NS_OK; } NS_IMETHODIMP PresShell::ClearFrameRefs(nsIFrame* aFrame) { nsIEventStateManager *manager; if (NS_OK == mPresContext->GetEventStateManager(&manager)) { manager->ClearFrameRefs(aFrame); NS_RELEASE(manager); } if (mCaret) { mCaret->ClearFrameRefs(aFrame); } if (aFrame == mCurrentEventFrame) { aFrame->GetContent(&mCurrentEventContent); mCurrentEventFrame = nsnull; } for (int i=0; iGetContent(¤tEventContent); mCurrentEventContentStack.ReplaceElementAt((void*)currentEventContent, i); mCurrentEventFrameStack.ReplaceElementAt(nsnull, i); } } return NS_OK; } NS_IMETHODIMP PresShell::CreateRenderingContext(nsIFrame *aFrame, nsIRenderingContext** aResult) { NS_PRECONDITION(nsnull != aResult, "null ptr"); if (nsnull == aResult) { return NS_ERROR_NULL_POINTER; } nsIView *view = nsnull; nsPoint pt; nsresult rv; aFrame->GetView(mPresContext, &view); if (nsnull == view) aFrame->GetOffsetFromView(mPresContext, pt, &view); nsCOMPtr widget; if (nsnull != view) { nsCOMPtr vm; view->GetViewManager(*getter_AddRefs(vm)); vm->GetWidgetForView(view, getter_AddRefs(widget)); } nsCOMPtr dx; nsIRenderingContext* result = nsnull; rv = mPresContext->GetDeviceContext(getter_AddRefs(dx)); if (NS_SUCCEEDED(rv) && dx) { if (nsnull != widget) { rv = dx->CreateRenderingContext(widget.get(), result); } else { rv = dx->CreateRenderingContext(result); } } *aResult = result; return rv; } NS_IMETHODIMP PresShell::CantRenderReplacedElement(nsIPresContext* aPresContext, nsIFrame* aFrame) { if (mFrameManager) { return mFrameManager->CantRenderReplacedElement(aPresContext, aFrame); } return NS_OK; } NS_IMETHODIMP PresShell::GoToAnchor(const nsAString& aAnchorName) { nsCOMPtr doc = do_QueryInterface(mDocument); nsCOMPtr htmlDoc = do_QueryInterface(mDocument); nsresult rv = NS_OK; nsCOMPtr content; // Search for an element with a matching "id" attribute if (doc) { nsCOMPtr element; rv = doc->GetElementById(aAnchorName, getter_AddRefs(element)); if (NS_SUCCEEDED(rv) && element) { // Get the nsIContent interface, because that's what we need to // get the primary frame content = do_QueryInterface(element); } } // Search for an anchor element with a matching "name" attribute if (!content && htmlDoc) { nsCOMPtr list; // Find a matching list of named nodes rv = htmlDoc->GetElementsByName(aAnchorName, getter_AddRefs(list)); if (NS_SUCCEEDED(rv) && list) { PRUint32 count; PRUint32 i; list->GetLength(&count); // Loop through the named nodes looking for the first anchor for (i = 0; i < count; i++) { nsCOMPtr node; rv = list->Item(i, getter_AddRefs(node)); if (NS_FAILED(rv)) { break; } // Ensure it's an anchor element nsCOMPtr element = do_QueryInterface(node); nsAutoString tagName; if (element && NS_SUCCEEDED(element->GetTagName(tagName))) { ToLowerCase(tagName); if (tagName.Equals(NS_LITERAL_STRING("a"))) { content = do_QueryInterface(element); break; } } } } } // Search for anchor in the HTML namespace with a matching name if (!content && !htmlDoc) { nsCOMPtr list; NS_NAMED_LITERAL_STRING(nameSpace, "http://www.w3.org/1999/xhtml"); // Get the list of anchor elements rv = doc->GetElementsByTagNameNS(nameSpace, NS_LITERAL_STRING("a"), getter_AddRefs(list)); if (NS_SUCCEEDED(rv) && list) { PRUint32 count; PRUint32 i; list->GetLength(&count); // Loop through the named nodes looking for the first anchor for (i = 0; i < count; i++) { nsCOMPtr node; rv = list->Item(i, getter_AddRefs(node)); if (NS_FAILED(rv)) { break; } // Compare the name attribute nsCOMPtr element = do_QueryInterface(node); nsAutoString value; if (element && NS_SUCCEEDED(element->GetAttribute(NS_LITERAL_STRING("name"), value))) { if (value.Equals(aAnchorName)) { content = do_QueryInterface(element); break; } } } } } // Finally try FIXptr nsCOMPtr jumpToRange; if (!content) { nsCOMPtr xmldoc = do_QueryInterface(mDocument); if (xmldoc) { xmldoc->EvaluateFIXptr(aAnchorName,getter_AddRefs(jumpToRange)); if (jumpToRange) { nsCOMPtr node; jumpToRange->GetStartContainer(getter_AddRefs(node)); if (node) { node->QueryInterface(NS_GET_IID(nsIContent),getter_AddRefs(content)); } } } } if (content) { nsIFrame* frame = nsnull; // Get the primary frame if (NS_SUCCEEDED(GetPrimaryFrameFor(content, &frame)) && frame) { rv = ScrollFrameIntoView(frame, NS_PRESSHELL_SCROLL_TOP, NS_PRESSHELL_SCROLL_ANYWHERE); if (NS_SUCCEEDED(rv)) { // Should we select the target? // This action is controlled by a preference: the default is to not select. PRBool selectAnchor = PR_FALSE; nsCOMPtr prefs(do_GetService(kPrefServiceCID,&rv)); if (NS_SUCCEEDED(rv) && prefs) { prefs->GetBoolPref("layout.selectanchor",&selectAnchor); } // Even if select anchor pref is false, we must still move the caret there. // That way tabbing will start from the new location if (!jumpToRange) { jumpToRange = do_CreateInstance(kRangeCID); nsCOMPtr node(do_QueryInterface(content)); if (jumpToRange && node) jumpToRange->SelectNode(node); } if (jumpToRange) { if (!selectAnchor) jumpToRange->Collapse(PR_TRUE); SelectRange(jumpToRange); } nsCOMPtr esm; if (NS_SUCCEEDED(mPresContext->GetEventStateManager(getter_AddRefs(esm))) && esm) { PRBool isSelectionWithFocus; esm->MoveFocusToCaret(PR_TRUE, &isSelectionWithFocus); } } } } else { rv = NS_ERROR_FAILURE; //changed to NS_OK in quirks mode if ScrollTo is called // Scroll to the top/left if the anchor can not be // found and it is labelled top (quirks mode only). @see bug 80784 nsCompatibility compatMode; mPresContext->GetCompatibilityMode(&compatMode); if ((NS_LossyConvertUCS2toASCII(aAnchorName).EqualsIgnoreCase("top")) && (compatMode == eCompatibility_NavQuirks) && (mViewManager)) { // Get the viewport scroller nsIScrollableView* scrollingView; mViewManager->GetRootScrollableView(&scrollingView); if (scrollingView) { // Scroll to the top of the page scrollingView->ScrollTo(0, 0, NS_VMREFRESH_IMMEDIATE); rv = NS_OK; } } } return rv; } nsresult PresShell::SelectRange(nsIDOMRange *aRange) { nsCOMPtr sel; nsresult rv = GetSelection(nsISelectionController::SELECTION_NORMAL, getter_AddRefs(sel)); if (NS_SUCCEEDED(rv) && sel) { sel->RemoveAllRanges(); sel->AddRange(aRange); } return rv; } NS_IMETHODIMP PresShell::ScrollFrameIntoView(nsIFrame *aFrame, PRIntn aVPercent, PRIntn aHPercent) const { nsresult rv = NS_OK; if (!aFrame) { return NS_ERROR_NULL_POINTER; } // Before we scroll the frame into view, ask the command dispatcher // if we're resetting focus because a window just got an activate // event. If we are, we do not want to scroll the frame into view. // Example: The user clicks on an anchor, and then deactivates the // window. When they reactivate the window, the expected behavior // is not for the anchor link to scroll back into view. That is what // this check is preventing. // XXX: The dependency on the command dispatcher needs to be fixed. nsCOMPtr content; aFrame->GetContent(getter_AddRefs(content)); if(content) { nsCOMPtr document; content->GetDocument(*getter_AddRefs(document)); if(document){ nsCOMPtr focusController; nsCOMPtr ourGlobal; document->GetScriptGlobalObject(getter_AddRefs(ourGlobal)); nsCOMPtr ourWindow = do_QueryInterface(ourGlobal); if(ourWindow) { ourWindow->GetRootFocusController(getter_AddRefs(focusController)); if (focusController) { PRBool dontScroll; focusController->GetSuppressFocusScroll(&dontScroll); if(dontScroll) return NS_OK; } } } } if (mViewManager) { // Get the viewport scroller nsIScrollableView* scrollingView = nsnull; nsIFrame *scrolled_frame = aFrame; // Get the closest scrollable view. while (1) { scrolled_frame->GetParentWithView(mPresContext, &scrolled_frame); if (!scrolled_frame) { break; } nsIView *view = nsnull; scrolled_frame->GetView(mPresContext, &view); NS_ASSERTION(scrolled_frame == aFrame || view, "No view in frame that came from GetView()!"); if (view) { view->QueryInterface(NS_GET_IID(nsIScrollableView), (void **)&scrollingView); if (scrollingView) { break; } } } if (scrollingView) { nsIView* scrolledView; nsPoint offset; nsIView* closestView; // Determine the offset from aFrame to the scrolled view. We do that by // getting the offset from its closest view and then walking up scrollingView->GetScrolledView(scrolledView); aFrame->GetOffsetFromView(mPresContext, offset, &closestView); // If this is an inline frame, we need to change the top of the // offset to include the whole line. nsCOMPtr frameType; nsIFrame *prevFrame = aFrame; nsIFrame *frame = aFrame; while (frame && (frame->GetFrameType(getter_AddRefs(frameType)), frameType.get() == nsLayoutAtoms::inlineFrame)) { prevFrame = frame; prevFrame->GetParent(&frame); } if (frame != aFrame && frame && frameType.get() == nsLayoutAtoms::blockFrame) { // find the line containing aFrame and increase the top of |offset|. nsCOMPtr lines( do_QueryInterface(frame) ); if (lines) { PRInt32 index = -1; lines->FindLineContaining(prevFrame, &index); if (index >= 0) { nsIFrame *trash1; PRInt32 trash2; nsRect lineBounds; PRUint32 trash3; if (NS_SUCCEEDED(lines->GetLine(index, &trash1, &trash2, lineBounds, &trash3))) { nsPoint blockOffset; nsIView* blockView; frame->GetOffsetFromView(mPresContext, blockOffset, &blockView); if (blockView == closestView) { // XXX If views not equal, this is hard. Do we want to bother? nscoord newoffset = lineBounds.y + blockOffset.y; if (newoffset < offset.y) offset.y = newoffset; } } } } } // We now have the offset relative to the closest parent view. // Walk up the view tree till we get to the scrolled view, since the // closest view could belong to a positioned but not scrolled element // This should give us the offset relative to the scrolled view while (closestView && closestView != scrolledView) { nscoord x, y; closestView->GetPosition(&x, &y); offset.MoveBy(x, y); closestView->GetParent(closestView); } // Determine the visible rect in the scrolled view's coordinate space. // The size of the visible area is the clip view size const nsIView* clipView; nsRect visibleRect; scrollingView->GetClipView(&clipView); clipView->GetBounds(visibleRect); // get width and height scrollingView->GetScrollPosition(visibleRect.x, visibleRect.y); // The actual scroll offsets nscoord scrollOffsetX = visibleRect.x; nscoord scrollOffsetY = visibleRect.y; // The frame's bounds in the coordinate space of the scrolled frame nsRect frameBounds; aFrame->GetRect(frameBounds); frameBounds.x = offset.x; frameBounds.y = offset.y; // See how the frame should be positioned vertically if (NS_PRESSHELL_SCROLL_ANYWHERE == aVPercent) { // The caller doesn't care where the frame is positioned vertically, // so long as it's fully visible if (frameBounds.y < visibleRect.y) { // Scroll up so the frame's top edge is visible scrollOffsetY = frameBounds.y; } else if (frameBounds.YMost() > visibleRect.YMost()) { // Scroll down so the frame's bottom edge is visible. Make sure the // frame's top edge is still visible scrollOffsetY += frameBounds.YMost() - visibleRect.YMost(); if (scrollOffsetY > frameBounds.y) { scrollOffsetY = frameBounds.y; } } } else if (NS_PRESSHELL_SCROLL_IF_NOT_VISIBLE == aVPercent) { // Scroll only if no part of the frame is visible in this view if (frameBounds.YMost() < visibleRect.y) { // Scroll up so the frame's top edge is visible scrollOffsetY = frameBounds.y; } else if (frameBounds.y > visibleRect.YMost()) { // Scroll down so the frame's bottom edge is visible. Make sure the // frame's top edge is still visible scrollOffsetY += frameBounds.YMost() - visibleRect.YMost(); if (scrollOffsetY > frameBounds.y) { scrollOffsetY = frameBounds.y; } } } else { // Align the frame edge according to the specified percentage nscoord frameAlignY = frameBounds.y + (frameBounds.height * aVPercent) / 100; scrollOffsetY = frameAlignY - (visibleRect.height * aVPercent) / 100; } // See how the frame should be positioned horizontally if (NS_PRESSHELL_SCROLL_ANYWHERE == aHPercent) { // The caller doesn't care where the frame is positioned horizontally, // so long as it's fully visible if (frameBounds.x < visibleRect.x) { // Scroll left so the frame's left edge is visible scrollOffsetX = frameBounds.x; } else if (frameBounds.XMost() > visibleRect.XMost()) { // Scroll right so the frame's right edge is visible. Make sure the // frame's left edge is still visible scrollOffsetX += frameBounds.XMost() - visibleRect.XMost(); if (scrollOffsetX > frameBounds.x) { scrollOffsetX = frameBounds.x; } } } else if (NS_PRESSHELL_SCROLL_IF_NOT_VISIBLE == aHPercent) { // Scroll only if no part of the frame is visible in this view if (frameBounds.XMost() < visibleRect.x) { // Scroll left so the frame's left edge is visible scrollOffsetX = frameBounds.x; } else if (frameBounds.x > visibleRect.XMost()) { // Scroll right so the frame's right edge is visible. Make sure the // frame's left edge is still visible scrollOffsetX += frameBounds.XMost() - visibleRect.XMost(); if (scrollOffsetX > frameBounds.x) { scrollOffsetX = frameBounds.x; } } } else { // Align the frame edge according to the specified percentage nscoord frameAlignX = frameBounds.x + (frameBounds.width * aHPercent) / 100; scrollOffsetX = frameAlignX - (visibleRect.width * aHPercent) / 100; } scrollingView->ScrollTo(scrollOffsetX, scrollOffsetY, NS_VMREFRESH_IMMEDIATE); if (scrolled_frame) { // Recurse in case aFrame is in a nested scrollable view. rv = ScrollFrameIntoView(scrolled_frame, aVPercent, aHPercent); } } } return rv; } // GetLinkLocation: copy link location to clipboard NS_IMETHODIMP PresShell::GetLinkLocation(nsIDOMNode* aNode, nsAString& aLocationString) { #ifdef DEBUG_dr printf("dr :: PresShell::GetLinkLocation\n"); #endif NS_ENSURE_ARG_POINTER(aNode); nsresult rv; nsAutoString anchorText; static char strippedChars[] = {'\t','\r','\n'}; // are we an anchor? nsCOMPtr anchor(do_QueryInterface(aNode)); nsCOMPtr area; nsCOMPtr link; nsAutoString xlinkType; if (anchor) { rv = anchor->GetHref(anchorText); NS_ENSURE_SUCCESS(rv, rv); } else { // area? area = do_QueryInterface(aNode); if (area) { rv = area->GetHref(anchorText); NS_ENSURE_SUCCESS(rv, rv); } else { // link? link = do_QueryInterface(aNode); if (link) { rv = link->GetHref(anchorText); NS_ENSURE_SUCCESS(rv, rv); } else { // Xlink? nsCOMPtr element(do_QueryInterface(aNode)); if (element) { NS_NAMED_LITERAL_STRING(xlinkNS,"http://www.w3.org/1999/xlink"); element->GetAttributeNS(xlinkNS,NS_LITERAL_STRING("type"),xlinkType); if (xlinkType.Equals(NS_LITERAL_STRING("simple"))) { element->GetAttributeNS(xlinkNS,NS_LITERAL_STRING("href"),anchorText); if (!anchorText.IsEmpty()) { // Resolve the full URI using baseURI property nsAutoString base; nsCOMPtr node(do_QueryInterface(aNode,&rv)); NS_ENSURE_SUCCESS(rv, rv); node->GetBaseURI(base); nsCOMPtr ios(do_GetService("@mozilla.org/network/io-service;1", &rv)); NS_ENSURE_SUCCESS(rv, rv); nsCOMPtr baseURI; rv = ios->NewURI(NS_ConvertUCS2toUTF8(base),nsnull,nsnull,getter_AddRefs(baseURI)); NS_ENSURE_SUCCESS(rv, rv); nsCAutoString spec; rv = baseURI->Resolve(NS_ConvertUCS2toUTF8(anchorText),spec); NS_ENSURE_SUCCESS(rv, rv); anchorText = NS_ConvertUTF8toUCS2(spec); } } } } } } if (anchor || area || link || xlinkType.Equals(NS_LITERAL_STRING("simple"))) { //Remove all the '\t', '\r' and '\n' from 'anchorText' anchorText.StripChars(strippedChars); aLocationString = anchorText; return NS_OK; } // if no link, fail. return NS_ERROR_FAILURE; } // GetImageLocation: copy image location to clipboard NS_IMETHODIMP PresShell::GetImageLocation(nsIDOMNode* aNode, nsAString& aLocationString) { #ifdef DEBUG_dr printf("dr :: PresShell::GetImageLocation\n"); #endif NS_ENSURE_ARG_POINTER(aNode); nsresult rv; // are we an image? nsCOMPtr img(do_QueryInterface(aNode, &rv)); NS_ENSURE_SUCCESS(rv, rv); return img->GetSrc(aLocationString); } // DoCopyImageContents: copy image contents to clipboard NS_IMETHODIMP PresShell::DoCopyImageContents(nsIDOMNode* aNode) { // XXX dr: platform-specific widget code works on windows and mac. // when linux copy image contents works, this should get written // and hooked up to the front end, similarly to cmd_copyImageLocation. return NS_ERROR_NOT_IMPLEMENTED; } NS_IMETHODIMP PresShell::DoCopy() { nsCOMPtr doc; GetDocument(getter_AddRefs(doc)); if (!doc) return NS_ERROR_FAILURE; nsresult rv; nsCOMPtr sel; nsCOMPtr manager; nsCOMPtr content; rv = mPresContext->GetEventStateManager(getter_AddRefs(manager)); if (NS_FAILED(rv)) return rv; if (!manager) return NS_ERROR_FAILURE; rv = manager->GetFocusedContent(getter_AddRefs(content)); if (NS_SUCCEEDED(rv) && content) { //check to see if we need to get selection from frame //optimization that MAY need to be expanded as more things implement their own "selection" nsCOMPtr htmlInputElement(do_QueryInterface(content)); nsCOMPtr htmlTextAreaElement(do_QueryInterface(content)); if (htmlInputElement || htmlTextAreaElement) { nsIFrame *htmlInputFrame; rv = GetPrimaryFrameFor(content, &htmlInputFrame); if (NS_FAILED(rv)) return rv; if (!htmlInputFrame) return NS_ERROR_FAILURE; nsCOMPtr selCon; rv = htmlInputFrame->GetSelectionController(mPresContext,getter_AddRefs(selCon)); if (NS_FAILED(rv)) return rv; if (!selCon) return NS_ERROR_FAILURE; rv = selCon->GetSelection(nsISelectionController::SELECTION_NORMAL, getter_AddRefs(sel)); } } if (!sel) //get selection from this PresShell rv = GetSelection(nsISelectionController::SELECTION_NORMAL, getter_AddRefs(sel)); if (NS_FAILED(rv)) return rv; if (!sel) return NS_ERROR_FAILURE; // Now we have the selection. Make sure it's nonzero: PRBool isCollapsed; sel->GetIsCollapsed(&isCollapsed); if (isCollapsed) return NS_OK; // call the copy code rv = nsCopySupport::HTMLCopy(sel, doc, nsIClipboard::kGlobalClipboard); if (NS_FAILED(rv)) return rv; // Now that we have copied, update the Paste menu item nsCOMPtr globalObject; doc->GetScriptGlobalObject(getter_AddRefs(globalObject)); nsCOMPtr domWindow = do_QueryInterface(globalObject); if (domWindow) { domWindow->UpdateCommands(NS_LITERAL_STRING("clipboard")); } return NS_OK; } NS_IMETHODIMP PresShell::CaptureHistoryState(nsILayoutHistoryState** aState, PRBool aLeavingPage) { nsresult rv = NS_OK; NS_PRECONDITION(nsnull != aState, "null state pointer"); nsCOMPtr historyState = do_QueryReferent(mHistoryState); if (!historyState) { // Create the document state object rv = NS_NewLayoutHistoryState(getter_AddRefs(historyState)); if (NS_FAILED(rv)) { *aState = nsnull; return rv; } mHistoryState = getter_AddRefs(NS_GetWeakReference(historyState)); } *aState = historyState; NS_IF_ADDREF(*aState); // Capture frame state for the entire frame hierarchy nsIFrame* rootFrame = nsnull; rv = GetRootFrame(&rootFrame); if (NS_FAILED(rv) || nsnull == rootFrame) return rv; // Capture frame state for the root scroll frame // Don't capture state when first creating doc element heirarchy // As the scroll position is 0 and this will cause us to loose // our previously saved place! if (aLeavingPage) { nsIFrame* scrollFrame = nsnull; rv = GetRootScrollFrame(mPresContext, rootFrame, &scrollFrame); if (scrollFrame) { rv = mFrameManager->CaptureFrameStateFor(mPresContext, scrollFrame, historyState, nsIStatefulFrame::eDocumentScrollState); } } rv = mFrameManager->CaptureFrameState(mPresContext, rootFrame, historyState); return rv; } NS_IMETHODIMP PresShell::GetHistoryState(nsILayoutHistoryState** aState) { nsCOMPtr historyState = do_QueryReferent(mHistoryState); *aState = historyState; NS_IF_ADDREF(*aState); return NS_OK; } NS_IMETHODIMP PresShell::SetHistoryState(nsILayoutHistoryState* aLayoutHistoryState) { mHistoryState = getter_AddRefs(NS_GetWeakReference(aLayoutHistoryState)); return NS_OK; } static PRBool IsGeneratedContentFrame(nsIFrame* aFrame) { nsFrameState frameState; aFrame->GetFrameState(&frameState); return (frameState & NS_FRAME_GENERATED_CONTENT) != 0; } static PRBool IsPseudoFrame(nsIFrame* aFrame, nsIContent* aParentContent) { nsCOMPtr content; aFrame->GetContent(getter_AddRefs(content)); return content.get() == aParentContent; } static nsIFrame* GetFirstChildFrame(nsIPresContext* aPresContext, nsIFrame* aFrame, nsIContent* aContent) { nsIFrame* childFrame; // Get the first child frame aFrame->FirstChild(aPresContext, nsnull, &childFrame); // If the child frame is a pseudo-frame, then return its first child. // Note that the frame we create for the generated content is also a // pseudo-frame and so don't drill down in that case if (childFrame && IsPseudoFrame(childFrame, aContent) && !IsGeneratedContentFrame(childFrame)) { return GetFirstChildFrame(aPresContext, childFrame, aContent); } return childFrame; } static nsIFrame* GetLastChildFrame(nsIPresContext* aPresContext, nsIFrame* aFrame, nsIContent* aContent) { NS_PRECONDITION(aFrame, "NULL frame pointer"); // Get the last in flow frame nsIFrame* lastInFlow; do { lastInFlow = aFrame; lastInFlow->GetNextInFlow(&aFrame); } while (aFrame); // Get the last child frame nsIFrame* firstChildFrame; lastInFlow->FirstChild(aPresContext, nsnull, &firstChildFrame); if (firstChildFrame) { nsFrameList frameList(firstChildFrame); nsIFrame* lastChildFrame = frameList.LastChild(); NS_ASSERTION(lastChildFrame, "unexpected error"); // Get the frame's first-in-flow. This matters in case the frame has // been continuted across multiple lines while (PR_TRUE) { nsIFrame* prevInFlow; lastChildFrame->GetPrevInFlow(&prevInFlow); if (prevInFlow) { lastChildFrame = prevInFlow; } else { break; } } // If the last child frame is a pseudo-frame, then return its last child. // Note that the frame we create for the generated content is also a // pseudo-frame and so don't drill down in that case if (lastChildFrame && IsPseudoFrame(lastChildFrame, aContent) && !IsGeneratedContentFrame(lastChildFrame)) { return GetLastChildFrame(aPresContext, lastChildFrame, aContent); } return lastChildFrame; } return nsnull; } NS_IMETHODIMP PresShell::GetGeneratedContentIterator(nsIContent* aContent, GeneratedContentType aType, nsIContentIterator** aIterator) const { nsIFrame* primaryFrame; nsresult rv = NS_OK; // Initialize OUT parameter *aIterator = nsnull; // Get the primary frame associated with the content object GetPrimaryFrameFor(aContent, &primaryFrame); if (primaryFrame) { // See whether it's a request for the before or after generated content if (Before == aType) { // The most efficient thing to do is to get the first child frame, // and see if it is associated with generated content nsIFrame* firstChildFrame = GetFirstChildFrame(mPresContext, primaryFrame, aContent); if (firstChildFrame && IsGeneratedContentFrame(firstChildFrame)) { // Create an iterator rv = NS_NewFrameContentIterator(mPresContext, firstChildFrame, aIterator); } } else { // Avoid finding the last child frame unless we need to. Instead probe // for the existence of the pseudo-element nsCOMPtr styleContext; nsCOMPtr pseudoStyleContext; primaryFrame->GetStyleContext(getter_AddRefs(styleContext)); mPresContext->ProbePseudoStyleContextFor(aContent, nsCSSAtoms::afterPseudo, styleContext, getter_AddRefs(pseudoStyleContext)); if (pseudoStyleContext) { nsIFrame* lastChildFrame = GetLastChildFrame(mPresContext, primaryFrame, aContent); if (lastChildFrame) { // it is now legal for GetLastChildFrame to return null. see bug 52307 (a regression from bug 18754) // in the case of a null child frame, we treat the frame as having no "after" style // the "before" handler above already does this check NS_ASSERTION(IsGeneratedContentFrame(lastChildFrame), "can't find generated content frame"); // Create an iterator rv = NS_NewFrameContentIterator(mPresContext, lastChildFrame, aIterator); } } } } return rv; } NS_IMETHODIMP PresShell::SetAnonymousContentFor(nsIContent* aContent, nsISupportsArray* aAnonymousElements) { NS_PRECONDITION(aContent != nsnull, "null ptr"); if (! aContent) return NS_ERROR_NULL_POINTER; NS_PRECONDITION(aAnonymousElements != nsnull, "null ptr"); if (! aAnonymousElements) return NS_ERROR_NULL_POINTER; if (! mAnonymousContentTable) { mAnonymousContentTable = new nsSupportsHashtable; if (! mAnonymousContentTable) return NS_ERROR_OUT_OF_MEMORY; } nsISupportsKey key(aContent); nsCOMPtr oldAnonymousElements = getter_AddRefs(NS_STATIC_CAST(nsISupportsArray*, mAnonymousContentTable->Get(&key))); if (oldAnonymousElements) { // If we're trying to set anonymous content for an element that // already had anonymous content, then we need to be sure to clean // up after the old content. (This can happen, for example, when a // reframe occurs.) PRUint32 count; oldAnonymousElements->Count(&count); while (PRInt32(--count) >= 0) { nsCOMPtr isupports( getter_AddRefs(oldAnonymousElements->ElementAt(count)) ); nsCOMPtr content( do_QueryInterface(isupports) ); NS_ASSERTION(content != nsnull, "not an nsIContent"); if (! content) continue; content->SetDocument(nsnull, PR_TRUE, PR_TRUE); } } mAnonymousContentTable->Put(&key, aAnonymousElements); return NS_OK; } NS_IMETHODIMP PresShell::GetAnonymousContentFor(nsIContent* aContent, nsISupportsArray** aAnonymousElements) { if (! mAnonymousContentTable) { *aAnonymousElements = nsnull; return NS_OK; } nsISupportsKey key(aContent); *aAnonymousElements = NS_REINTERPRET_CAST(nsISupportsArray*, mAnonymousContentTable->Get(&key)); // addrefs return NS_OK; } static PRBool PR_CALLBACK ClearDocumentEnumerator(nsHashKey* aKey, void* aData, void* aClosure) { nsISupportsArray* anonymousElements = NS_STATIC_CAST(nsISupportsArray*, aData); PRUint32 count; anonymousElements->Count(&count); while (PRInt32(--count) >= 0) { nsCOMPtr isupports( getter_AddRefs(anonymousElements->ElementAt(count)) ); nsCOMPtr content( do_QueryInterface(isupports) ); NS_ASSERTION(content != nsnull, "not an nsIContent"); if (! content) continue; content->SetDocument(nsnull, PR_TRUE, PR_TRUE); } return PR_TRUE; } NS_IMETHODIMP PresShell::ReleaseAnonymousContent() { if (mAnonymousContentTable) { mAnonymousContentTable->Enumerate(ClearDocumentEnumerator); delete mAnonymousContentTable; mAnonymousContentTable = nsnull; } return NS_OK; } NS_IMETHODIMP PresShell::IsPaintingSuppressed(PRBool* aResult) { *aResult = mPaintingSuppressed; return NS_OK; } void PresShell::UnsuppressAndInvalidate() { nsCOMPtr globalObject; mDocument->GetScriptGlobalObject(getter_AddRefs(globalObject)); nsCOMPtr ourWindow = do_QueryInterface(globalObject); nsCOMPtr focusController; if (ourWindow) ourWindow->GetRootFocusController(getter_AddRefs(focusController)); if (focusController) // Suppress focus. The act of tearing down the old content viewer // causes us to blur incorrectly. focusController->SetSuppressFocus(PR_TRUE, "PresShell suppression on Web page loads"); nsCOMPtr container; mPresContext->GetContainer(getter_AddRefs(container)); if (container) { nsCOMPtr cvc(do_QueryInterface(container)); if (cvc) { nsCOMPtr cv; cvc->GetContentViewer(getter_AddRefs(cv)); if (cv) { nsCOMPtr kungFuDeathGrip(this); cv->Show(); // Calling |Show| may destroy us. Not sure why yet, but it's // a smoketest blocker. if (mIsDestroying) return; } } } NS_ASSERTION(mFrameManager, "frameManager is already gone"); if (mFrameManager) { mPaintingSuppressed = PR_FALSE; nsIFrame* rootFrame; mFrameManager->GetRootFrame(&rootFrame); if (rootFrame) { nsRect rect; rootFrame->GetRect(rect); if (!rect.IsEmpty()) { ((nsFrame*)rootFrame)->Invalidate(mPresContext, rect, PR_FALSE); } } } if (ourWindow) CheckForFocus(ourWindow, focusController, mDocument); if (focusController) // Unsuppress now that we've shown the new window and focused it. focusController->SetSuppressFocus(PR_FALSE, "PresShell suppression on Web page loads"); } NS_IMETHODIMP PresShell::UnsuppressPainting() { if (mPaintSuppressionTimer) { mPaintSuppressionTimer->Cancel(); mPaintSuppressionTimer = nsnull; } if (mIsDocumentGone || !mPaintingSuppressed) return NS_OK; // If we have reflows pending, just wait until we process // the reflows and get all the frames where we want them // before actually unlocking the painting. Otherwise // go ahead and unlock now. if (mReflowCommands.Count() > 0) mShouldUnsuppressPainting = PR_TRUE; else UnsuppressAndInvalidate(); return NS_OK; } // Post a request to handle an arbitrary callback after reflow has finished. NS_IMETHODIMP PresShell::PostReflowCallback(nsIReflowCallback* aCallback) { nsCallbackEventRequest* request = nsnull; void* result = nsnull; AllocateFrame(sizeof(nsCallbackEventRequest), &result); request = (nsCallbackEventRequest*)result; request->callback = aCallback; NS_ADDREF(aCallback); request->next = nsnull; if (mLastCallbackEventRequest) { mLastCallbackEventRequest = mLastCallbackEventRequest->next = request; } else { mFirstCallbackEventRequest = request; mLastCallbackEventRequest = request; } return NS_OK; } NS_IMETHODIMP PresShell::CancelReflowCallback(nsIReflowCallback* aCallback) { nsCallbackEventRequest* before = nsnull; nsCallbackEventRequest* node = mFirstCallbackEventRequest; while(node) { nsIReflowCallback* callback = node->callback; if (callback == aCallback) { nsCallbackEventRequest* toFree = node; if (node == mFirstCallbackEventRequest) { mFirstCallbackEventRequest = node->next; node = mFirstCallbackEventRequest; before = nsnull; } else { node = node->next; before->next = node; } FreeFrame(sizeof(nsCallbackEventRequest), toFree); NS_RELEASE(callback); } else { before = node; node = node->next; } } return NS_OK; } /** * Post a request to handle a DOM event after Reflow has finished. * The event must have been created with the "new" operator. */ NS_IMETHODIMP PresShell::PostDOMEvent(nsIContent* aContent, nsEvent* aEvent) { // ok we have a list of events to handle. Queue them up and handle them // after we finish reflow. nsDOMEventRequest* request = nsnull; void* result = nsnull; AllocateFrame(sizeof(nsDOMEventRequest), &result); request = (nsDOMEventRequest*)result; request->content = aContent; NS_ADDREF(aContent); request->event = aEvent; request->next = nsnull; if (mLastDOMEventRequest) { mLastDOMEventRequest = mLastDOMEventRequest->next = request; } else { mFirstDOMEventRequest = request; mLastDOMEventRequest = request; } return NS_OK; } /** * Post a request to set and attribute after reflow has finished. */ NS_IMETHODIMP PresShell::PostAttributeChange(nsIContent* aContent, PRInt32 aNameSpaceID, nsIAtom* aName, const nsString& aValue, PRBool aNotify, nsAttributeChangeType aType) { // ok we have a list of events to handle. Queue them up and handle them // after we finish reflow. nsAttributeChangeRequest* request = nsnull; void* result = nsnull; AllocateFrame(sizeof(nsAttributeChangeRequest), &result); request = (nsAttributeChangeRequest*)result; request->content = aContent; NS_ADDREF(aContent); request->nameSpaceID = aNameSpaceID; request->name = aName; request->value = aValue; request->notify = aNotify; request->type = aType; request->next = nsnull; if (mLastAttributeRequest) { mLastAttributeRequest = mLastAttributeRequest->next = request; } else { mFirstAttributeRequest = request; mLastAttributeRequest = request; } return NS_OK; } void PresShell::HandlePostedReflowCallbacks() { PRBool shouldFlush = PR_FALSE; nsCallbackEventRequest* node = mFirstCallbackEventRequest; while(node) { nsIReflowCallback* callback = node->callback; nsCallbackEventRequest* toFree = node; node = node->next; mFirstCallbackEventRequest = node; FreeFrame(sizeof(nsCallbackEventRequest), toFree); if (callback) callback->ReflowFinished(this, &shouldFlush); NS_IF_RELEASE(callback); } mFirstCallbackEventRequest = mLastCallbackEventRequest = nsnull; if (shouldFlush) FlushPendingNotifications(PR_FALSE); } void PresShell::HandlePostedDOMEvents() { while(mFirstDOMEventRequest) { /* pull the node from the event request list. Be prepared for reentrant access to the list from within HandleDOMEvent and its callees! */ nsDOMEventRequest* node = mFirstDOMEventRequest; nsEventStatus status = nsEventStatus_eIgnore; mFirstDOMEventRequest = node->next; if (nsnull == mFirstDOMEventRequest) { mLastDOMEventRequest = nsnull; } node->content->HandleDOMEvent(mPresContext, node->event, nsnull, NS_EVENT_FLAG_INIT, &status); NS_RELEASE(node->content); delete node->event; node->nsDOMEventRequest::~nsDOMEventRequest(); // doesn't do anything, but just in case FreeFrame(sizeof(nsDOMEventRequest), node); } } void PresShell::HandlePostedAttributeChanges() { while(mFirstAttributeRequest) { /* pull the node from the request list. Be prepared for reentrant access to the list from within SetAttribute/UnsetAttribute and its callees! */ nsAttributeChangeRequest* node = mFirstAttributeRequest; mFirstAttributeRequest = node->next; if (nsnull == mFirstAttributeRequest) { mLastAttributeRequest = nsnull; } if (node->type == eChangeType_Set) node->content->SetAttr(node->nameSpaceID, node->name, node->value, node->notify); else node->content->UnsetAttr(node->nameSpaceID, node->name, node->notify); NS_RELEASE(node->content); node->nsAttributeChangeRequest::~nsAttributeChangeRequest(); FreeFrame(sizeof(nsAttributeChangeRequest), node); } } NS_IMETHODIMP PresShell::IsSafeToFlush(PRBool& aIsSafeToFlush) { aIsSafeToFlush = PR_TRUE; if (mIsReflowing) { // Not safe if we are reflowing aIsSafeToFlush = PR_FALSE; } else { // Not safe if we are painting nsCOMPtr viewManager; nsresult rv = GetViewManager(getter_AddRefs(viewManager)); if (NS_SUCCEEDED(rv) && (nsnull != viewManager)) { PRBool isPainting = PR_FALSE; viewManager->IsPainting(isPainting); if (isPainting) { aIsSafeToFlush = PR_FALSE; } } } return NS_OK; } NS_IMETHODIMP PresShell::FlushPendingNotifications(PRBool aUpdateViews) { PRBool isSafeToFlush; IsSafeToFlush(isSafeToFlush); if (isSafeToFlush) { if (aUpdateViews && mViewManager) { mViewManager->BeginUpdateViewBatch(); } ProcessReflowCommands(PR_FALSE); if (aUpdateViews && mViewManager) { mViewManager->EndUpdateViewBatch(NS_VMREFRESH_IMMEDIATE); } } return NS_OK; } NS_IMETHODIMP PresShell::IsReflowLocked(PRBool* aIsReflowLocked) { *aIsReflowLocked = mIsReflowing; return NS_OK; } NS_IMETHODIMP PresShell::BeginReflowBatching() { mBatchReflows = PR_TRUE; return NS_OK; } NS_IMETHODIMP PresShell::EndReflowBatching(PRBool aFlushPendingReflows) { nsresult rv = NS_OK; mBatchReflows = PR_FALSE; if (aFlushPendingReflows) { rv = FlushPendingNotifications(PR_FALSE); } else { PostReflowEvent(); } return rv; } NS_IMETHODIMP PresShell::GetReflowBatchingStatus(PRBool* aIsBatching) { *aIsBatching = mBatchReflows; return NS_OK; } NS_IMETHODIMP PresShell::ContentChanged(nsIDocument *aDocument, nsIContent* aContent, nsISupports* aSubContent) { WillCauseReflow(); nsresult rv = mStyleSet->ContentChanged(mPresContext, aContent, aSubContent); VERIFY_STYLE_TREE; DidCauseReflow(); return rv; } NS_IMETHODIMP PresShell::ContentStatesChanged(nsIDocument* aDocument, nsIContent* aContent1, nsIContent* aContent2, PRInt32 aStateMask) { WillCauseReflow(); nsresult rv = mStyleSet->ContentStatesChanged(mPresContext, aContent1, aContent2, aStateMask); VERIFY_STYLE_TREE; DidCauseReflow(); return rv; } NS_IMETHODIMP PresShell::AttributeChanged(nsIDocument *aDocument, nsIContent* aContent, PRInt32 aNameSpaceID, nsIAtom* aAttribute, PRInt32 aModType, PRInt32 aHint) { nsresult rv = NS_OK; // XXXwaterson it might be more elegant to wait until after the // initial reflow to begin observing the document. That would // squelch any other inappropriate notifications as well. if (mDidInitialReflow) { WillCauseReflow(); rv = mStyleSet->AttributeChanged(mPresContext, aContent, aNameSpaceID, aAttribute, aModType, aHint); VERIFY_STYLE_TREE; DidCauseReflow(); } return rv; } NS_IMETHODIMP PresShell::ContentAppended(nsIDocument *aDocument, nsIContent* aContainer, PRInt32 aNewIndexInContainer) { WillCauseReflow(); MOZ_TIMER_DEBUGLOG(("Start: Frame Creation: PresShell::ContentAppended(), this=%p\n", this)); MOZ_TIMER_START(mFrameCreationWatch); CtlStyleWatch(kStyleWatchEnable,mStyleSet); nsresult rv = mStyleSet->ContentAppended(mPresContext, aContainer, aNewIndexInContainer); VERIFY_STYLE_TREE; MOZ_TIMER_DEBUGLOG(("Stop: Frame Creation: PresShell::ContentAppended(), this=%p\n", this)); MOZ_TIMER_STOP(mFrameCreationWatch); CtlStyleWatch(kStyleWatchDisable,mStyleSet); DidCauseReflow(); return rv; } NS_IMETHODIMP PresShell::ContentInserted(nsIDocument* aDocument, nsIContent* aContainer, nsIContent* aChild, PRInt32 aIndexInContainer) { WillCauseReflow(); nsresult rv = mStyleSet->ContentInserted(mPresContext, aContainer, aChild, aIndexInContainer); VERIFY_STYLE_TREE; DidCauseReflow(); return rv; } NS_IMETHODIMP PresShell::ContentReplaced(nsIDocument* aDocument, nsIContent* aContainer, nsIContent* aOldChild, nsIContent* aNewChild, PRInt32 aIndexInContainer) { // Notify the ESM that the content has been removed, so that // it can clean up any state related to the content. nsCOMPtr esm; mPresContext->GetEventStateManager(getter_AddRefs(esm)); if (esm) esm->ContentRemoved(aOldChild); WillCauseReflow(); nsresult rv = mStyleSet->ContentReplaced(mPresContext, aContainer, aOldChild, aNewChild, aIndexInContainer); VERIFY_STYLE_TREE; DidCauseReflow(); return rv; } NS_IMETHODIMP PresShell::ContentRemoved(nsIDocument *aDocument, nsIContent* aContainer, nsIContent* aChild, PRInt32 aIndexInContainer) { // Notify the ESM that the content has been removed, so that // it can clean up any state related to the content. nsCOMPtr esm; mPresContext->GetEventStateManager(getter_AddRefs(esm)); if (esm) esm->ContentRemoved(aChild); WillCauseReflow(); nsresult rv = mStyleSet->ContentRemoved(mPresContext, aContainer, aChild, aIndexInContainer); VERIFY_STYLE_TREE; DidCauseReflow(); return rv; } nsresult PresShell::ReconstructFrames(void) { nsresult rv = NS_OK; WillCauseReflow(); rv = mStyleSet->ReconstructDocElementHierarchy(mPresContext); VERIFY_STYLE_TREE; DidCauseReflow(); return rv; } /* * It's better to add stuff to the |DidSetStyleContext| method of the * relevant frames than adding it here. These methods should (ideally, * anyway) go away. */ // Return value says whether to walk children. typedef PRBool (* PR_CALLBACK frameWalkerFn)(nsIFrame *aFrame, void *aClosure); PR_STATIC_CALLBACK(PRBool) BuildFramechangeList(nsIFrame *aFrame, void *aClosure) { nsStyleChangeList *changeList = NS_STATIC_CAST(nsStyleChangeList*, aClosure); // Ok, get our binding information. const nsStyleDisplay* oldDisplay; aFrame->GetStyleData(eStyleStruct_Display, (const nsStyleStruct*&)oldDisplay); if (!oldDisplay->mBinding.IsEmpty()) { // We had a binding. nsCOMPtr content; aFrame->GetContent(getter_AddRefs(content)); nsCOMPtr doc; content->GetDocument(*getter_AddRefs(doc)); if (doc) { nsCOMPtr bm; doc->GetBindingManager(getter_AddRefs(bm)); nsCOMPtr binding; bm->GetBinding(content, getter_AddRefs(binding)); PRBool marked = PR_FALSE; binding->MarkedForDeath(&marked); if (marked) { // Add in a change to process, thus ensuring this binding gets rebuilt. changeList->AppendChange(aFrame, content, NS_STYLE_HINT_FRAMECHANGE); return PR_FALSE; } } } return PR_TRUE; } PR_STATIC_CALLBACK(PRBool) ReResolveMenusAndTrees(nsIFrame *aFrame, void *aClosure) { // Trees have a special style cache that needs to be flushed when // the theme changes. nsCOMPtr treeBox(do_QueryInterface(aFrame)); if (treeBox) treeBox->ClearStyleAndImageCaches(); // We deliberately don't re-resolve style on a menu's popup // sub-content, since doing so slows menus to a crawl. That means we // have to special-case them on a skin switch, and ensure that the // popup frames just get destroyed completely. nsCOMPtr menuFrame(do_QueryInterface(aFrame)); if (menuFrame) { menuFrame->UngenerateMenu(); menuFrame->OpenMenu(PR_FALSE); } return PR_TRUE; } static void WalkFramesThroughPlaceholders(nsIPresContext *aPresContext, nsIFrame *aFrame, frameWalkerFn aFunc, void *aClosure) { PRBool walkChildren = (*aFunc)(aFrame, aClosure); if (!walkChildren) return; PRInt32 listIndex = 0; nsCOMPtr childList; do { nsIFrame *child = nsnull; aFrame->FirstChild(aPresContext, childList, &child); while (child) { nsFrameState state; child->GetFrameState(&state); if (!(state & NS_FRAME_OUT_OF_FLOW)) { // only do frames that are in flow nsCOMPtr frameType; child->GetFrameType(getter_AddRefs(frameType)); if (nsLayoutAtoms::placeholderFrame == frameType) { // placeholder // get out of flow frame and recur there nsIFrame* outOfFlowFrame = NS_STATIC_CAST(nsPlaceholderFrame*, child)->GetOutOfFlowFrame(); NS_ASSERTION(outOfFlowFrame, "no out-of-flow frame"); WalkFramesThroughPlaceholders(aPresContext, outOfFlowFrame, aFunc, aClosure); } else WalkFramesThroughPlaceholders(aPresContext, child, aFunc, aClosure); } child->GetNextSibling(&child); } aFrame->GetAdditionalChildListName(listIndex++, getter_AddRefs(childList)); } while (childList); } NS_IMETHODIMP PresShell::ReconstructStyleData(PRBool aRebuildRuleTree) { nsIFrame* rootFrame; GetRootFrame(&rootFrame); if (!rootFrame) return NS_OK; nsCOMPtr set; GetStyleSet(getter_AddRefs(set)); if (!set) return NS_OK; nsCOMPtr cssFrameConstructor; set->GetStyleFrameConstruction(getter_AddRefs(cssFrameConstructor)); if (!cssFrameConstructor) return NS_OK; nsCOMPtr frameManager; GetFrameManager(getter_AddRefs(frameManager)); // Now handle some of our more problematic widgets (and also deal with // skin XBL changing). nsStyleChangeList changeList; if (aRebuildRuleTree) { // Handle those widgets that have special style contexts cached // that will point to invalid rule nodes following a rule tree // reconstruction. WalkFramesThroughPlaceholders(mPresContext, rootFrame, &BuildFramechangeList, &changeList); cssFrameConstructor->ProcessRestyledFrames(changeList, mPresContext); changeList.Clear(); // Now do a complete re-resolve of our style tree. set->BeginRuleTreeReconstruct(); } PRInt32 frameChange = NS_STYLE_HINT_NONE; frameManager->ComputeStyleChangeFor(mPresContext, rootFrame, kNameSpaceID_Unknown, nsnull, changeList, NS_STYLE_HINT_NONE, frameChange); if (frameChange == NS_STYLE_HINT_RECONSTRUCT_ALL) set->ReconstructDocElementHierarchy(mPresContext); else { cssFrameConstructor->ProcessRestyledFrames(changeList, mPresContext); if (aRebuildRuleTree) { GetRootFrame(&rootFrame); WalkFramesThroughPlaceholders(mPresContext, rootFrame, &ReResolveMenusAndTrees, nsnull); } } if (aRebuildRuleTree) set->EndRuleTreeReconstruct(); return NS_OK; } NS_IMETHODIMP PresShell::StyleSheetAdded(nsIDocument *aDocument, nsIStyleSheet* aStyleSheet) { // If style information is being added, we don't need to rebuild the // rule tree, since no rule nodes have been rendered invalid by the // addition of new rule content. return ReconstructStyleData(PR_FALSE); } NS_IMETHODIMP PresShell::StyleSheetRemoved(nsIDocument *aDocument, nsIStyleSheet* aStyleSheet) { // XXXdwh We'd like to be able to use ReconstructStyleData in all the // other style sheet calls, but it doesn't quite work because of HTML tables. return ReconstructStyleData(PR_TRUE); } NS_IMETHODIMP PresShell::StyleSheetDisabledStateChanged(nsIDocument *aDocument, nsIStyleSheet* aStyleSheet, PRBool aDisabled) { // first notify the style set that a sheet's state has changed if (mStyleSet) { nsresult rv = mStyleSet->NotifyStyleSheetStateChanged(!aDisabled); if (NS_FAILED(rv)) return rv; } // We don't need to rebuild the // rule tree, since no rule nodes have been rendered invalid by the // addition of new rule content. They can simply lurk in the tree // until the stylesheet is enabled once more. return ReconstructStyleData(PR_FALSE); } NS_IMETHODIMP PresShell::StyleRuleChanged(nsIDocument *aDocument, nsIStyleSheet* aStyleSheet, nsIStyleRule* aStyleRule, PRInt32 aHint) { WillCauseReflow(); nsresult rv = mStyleSet->StyleRuleChanged(mPresContext, aStyleSheet, aStyleRule, aHint); VERIFY_STYLE_TREE; DidCauseReflow(); return rv; } NS_IMETHODIMP PresShell::StyleRuleAdded(nsIDocument *aDocument, nsIStyleSheet* aStyleSheet, nsIStyleRule* aStyleRule) { WillCauseReflow(); nsresult rv = mStyleSet->StyleRuleAdded(mPresContext, aStyleSheet, aStyleRule); VERIFY_STYLE_TREE; DidCauseReflow(); if (NS_FAILED(rv)) { return rv; } // We don't need to rebuild the // rule tree, since no rule nodes have been rendered invalid by the // addition of new rule content. return ReconstructStyleData(PR_FALSE); } NS_IMETHODIMP PresShell::StyleRuleRemoved(nsIDocument *aDocument, nsIStyleSheet* aStyleSheet, nsIStyleRule* aStyleRule) { WillCauseReflow(); nsresult rv = mStyleSet->StyleRuleRemoved(mPresContext, aStyleSheet, aStyleRule); VERIFY_STYLE_TREE; DidCauseReflow(); if (NS_FAILED(rv)) { return rv; } // XXX For now reconstruct everything return ReconstructFrames(); } NS_IMETHODIMP PresShell::DocumentWillBeDestroyed(nsIDocument *aDocument) { return NS_OK; } NS_IMETHODIMP PresShell::GetPrimaryFrameFor(nsIContent* aContent, nsIFrame** aResult) const { nsresult rv; if (mFrameManager) { rv = mFrameManager->GetPrimaryFrameFor(aContent, aResult); } else { *aResult = nsnull; rv = NS_OK; } return rv; } NS_IMETHODIMP PresShell::GetStyleContextFor(nsIFrame* aFrame, nsIStyleContext** aStyleContext) const { if (!aFrame || !aStyleContext) { return NS_ERROR_NULL_POINTER; } return (aFrame->GetStyleContext(aStyleContext)); } NS_IMETHODIMP PresShell::GetLayoutObjectFor(nsIContent* aContent, nsISupports** aResult) const { nsresult result = NS_ERROR_NULL_POINTER; if ((nsnull!=aResult) && (nsnull!=aContent)) { *aResult = nsnull; nsIFrame *primaryFrame=nsnull; result = GetPrimaryFrameFor(aContent, &primaryFrame); if ((NS_SUCCEEDED(result)) && (nsnull!=primaryFrame)) { result = primaryFrame->QueryInterface(NS_GET_IID(nsISupports), (void**)aResult); } } return result; } NS_IMETHODIMP PresShell::GetPlaceholderFrameFor(nsIFrame* aFrame, nsIFrame** aResult) const { if (!mFrameManager) { *aResult = nsnull; return NS_OK; } return mFrameManager->GetPlaceholderFrameFor(aFrame, aResult); } #ifdef IBMBIDI NS_IMETHODIMP PresShell::SetCaretBidiLevel(PRUint8 aLevel) { // If the current level is undefined, we have just inserted new text. // In this case, we don't want to reset the keyboard language PRBool afterInsert = mBidiLevel & BIDI_LEVEL_UNDEFINED; mBidiLevel = aLevel; // PRBool parityChange = ((mBidiLevel ^ aLevel) & 1); // is the parity of the new level different from the current level? // if (parityChange) // if so, change the keyboard language if (mBidiKeyboard && !afterInsert) mBidiKeyboard->SetLangFromBidiLevel(aLevel); return NS_OK; } NS_IMETHODIMP PresShell::GetCaretBidiLevel(PRUint8 *aOutLevel) { if (!aOutLevel) { return NS_ERROR_INVALID_ARG; } *aOutLevel = mBidiLevel; return NS_OK; } NS_IMETHODIMP PresShell::UndefineCaretBidiLevel() { mBidiLevel |= BIDI_LEVEL_UNDEFINED; return NS_OK; } NS_IMETHODIMP PresShell::BidiStyleChangeReflow() { // Have the root frame's style context remap its style nsIFrame* rootFrame; mFrameManager->GetRootFrame(&rootFrame); if (rootFrame) { mStyleSet->ClearStyleData(mPresContext, nsnull, nsnull); ReconstructFrames(); } return NS_OK; } #endif // IBMBIDI //nsIViewObserver // Return TRUE if any clipping is to be done. static PRBool ComputeClipRect(nsIFrame* aFrame, nsRect& aResult) { const nsStyleDisplay* display; aFrame->GetStyleData(eStyleStruct_Display, (const nsStyleStruct*&) display); // 'clip' only applies to absolutely positioned elements, and is // relative to the element's border edge. 'clip' applies to the entire // element: border, padding, and content areas, and even scrollbars if // there are any. if (display->IsAbsolutelyPositioned() && (display->mClipFlags & NS_STYLE_CLIP_RECT)) { nsSize size; // Start with the 'auto' values and then factor in user specified values aFrame->GetSize(size); nsRect clipRect(0, 0, size.width, size.height); if (display->mClipFlags & NS_STYLE_CLIP_RECT) { if (0 == (NS_STYLE_CLIP_TOP_AUTO & display->mClipFlags)) { clipRect.y = display->mClip.y; } if (0 == (NS_STYLE_CLIP_LEFT_AUTO & display->mClipFlags)) { clipRect.x = display->mClip.x; } if (0 == (NS_STYLE_CLIP_RIGHT_AUTO & display->mClipFlags)) { clipRect.width = display->mClip.width; } if (0 == (NS_STYLE_CLIP_BOTTOM_AUTO & display->mClipFlags)) { clipRect.height = display->mClip.height; } } aResult = clipRect; return PR_TRUE; } return PR_FALSE; } // If the element is absolutely positioned and has a specified clip rect // then it pushes the current rendering context and sets the clip rect. // Returns PR_TRUE if the clip rect is set and PR_FALSE otherwise static PRBool SetClipRect(nsIRenderingContext& aRenderingContext, nsIFrame* aFrame) { nsRect clipRect; if (ComputeClipRect(aFrame, clipRect)) { // Set updated clip-rect into the rendering context PRBool clipState; aRenderingContext.PushState(); aRenderingContext.SetClipRect(clipRect, nsClipCombine_kIntersect, clipState); return PR_TRUE; } return PR_FALSE; } static PRBool InClipRect(nsIFrame* aFrame, nsPoint& aEventPoint) { nsRect clipRect; if (ComputeClipRect(aFrame, clipRect)) { return clipRect.Contains(aEventPoint); } else { return PR_TRUE; } } NS_IMETHODIMP PresShell::Paint(nsIView *aView, nsIRenderingContext& aRenderingContext, const nsRect& aDirtyRect) { void* clientData; nsIFrame* frame; nsresult rv = NS_OK; if (mIsDestroying) { NS_ASSERTION(PR_FALSE, "A paint message was dispatched to a destroyed PresShell"); return NS_OK; } NS_ASSERTION(!(nsnull == aView), "null view"); aView->GetClientData(clientData); frame = (nsIFrame *)clientData; if (nsnull != frame) { mCaret->EraseCaret(); //StCaretHider caretHider(mCaret); // stack-based class hides caret until dtor. // If the frame is absolutely positioned, then the 'clip' property // applies PRBool setClipRect = SetClipRect(aRenderingContext, frame); rv = frame->Paint(mPresContext, aRenderingContext, aDirtyRect, NS_FRAME_PAINT_LAYER_BACKGROUND); rv = frame->Paint(mPresContext, aRenderingContext, aDirtyRect, NS_FRAME_PAINT_LAYER_FLOATERS); rv = frame->Paint(mPresContext, aRenderingContext, aDirtyRect, NS_FRAME_PAINT_LAYER_FOREGROUND); if (setClipRect) { PRBool clipState; aRenderingContext.PopState(clipState); } #ifdef NS_DEBUG // Draw a border around the frame if (nsIFrameDebug::GetShowFrameBorders()) { nsRect r; frame->GetRect(r); aRenderingContext.SetColor(NS_RGB(0,0,255)); aRenderingContext.DrawRect(0, 0, r.width, r.height); } // Draw a border around the current event target if ((nsIFrameDebug::GetShowEventTargetFrameBorder()) && (aView == mCurrentTargetView)) { aRenderingContext.SetColor(NS_RGB(128,0,128)); aRenderingContext.DrawRect(mCurrentTargetRect.x, mCurrentTargetRect.y, mCurrentTargetRect.width, mCurrentTargetRect.height); } #endif } return rv; } nsIFrame* PresShell::GetCurrentEventFrame() { if (!mCurrentEventFrame && mCurrentEventContent) { // Make sure the content still has a document reference. If not, // then we assume it is no longer in the content tree and the // frame shouldn't get an event, nor should we even assume its // safe to try and find the frame. nsCOMPtr doc; nsresult result = mCurrentEventContent->GetDocument(*getter_AddRefs(doc)); if (NS_SUCCEEDED(result) && doc) { GetPrimaryFrameFor(mCurrentEventContent, &mCurrentEventFrame); } } return mCurrentEventFrame; } NS_IMETHODIMP PresShell::GetEventTargetFrame(nsIFrame** aFrame) { *aFrame = GetCurrentEventFrame(); return NS_OK; } void PresShell::PushCurrentEventInfo(nsIFrame* aFrame, nsIContent* aContent) { if (mCurrentEventFrame || mCurrentEventContent) { mCurrentEventFrameStack.InsertElementAt((void*)mCurrentEventFrame, 0); mCurrentEventContentStack.InsertElementAt((void*)mCurrentEventContent, 0); } mCurrentEventFrame = aFrame; mCurrentEventContent = aContent; NS_IF_ADDREF(aContent); } void PresShell::PopCurrentEventInfo() { mCurrentEventFrame = nsnull; NS_IF_RELEASE(mCurrentEventContent); if (0 != mCurrentEventFrameStack.Count()) { mCurrentEventFrame = (nsIFrame*)mCurrentEventFrameStack.ElementAt(0); mCurrentEventFrameStack.RemoveElementAt(0); mCurrentEventContent = (nsIContent*)mCurrentEventContentStack.ElementAt(0); mCurrentEventContentStack.RemoveElementAt(0); } } NS_IMETHODIMP PresShell::HandleEvent(nsIView *aView, nsGUIEvent* aEvent, nsEventStatus* aEventStatus, PRBool aForceHandle, PRBool& aHandled) { void* clientData; nsIFrame* frame; nsresult rv = NS_OK; NS_ASSERTION(!(nsnull == aView), "null view"); aHandled = PR_TRUE; if (mIsDestroying || mIsReflowing) { return NS_OK; } #ifdef ACCESSIBILITY if (aEvent->eventStructType == NS_ACCESSIBLE_EVENT) return HandleEventInternal(aEvent, aView, NS_EVENT_FLAG_INIT, aEventStatus); #endif // Check for a theme change up front, since the frame type is irrelevant if (aEvent->message == NS_THEMECHANGED && mPresContext) return mPresContext->ThemeChanged(); // Check for a system color change up front, since the frame type is irrelevenat if ((aEvent->message == NS_SYSCOLORCHANGED) && mPresContext) { nsIViewManager *vm; if ((NS_SUCCEEDED(GetViewManager(&vm))) && vm) { // Only dispatch system color change when the message originates from // from the root views widget. This is necessary to prevent us from // dispatching the SysColorChanged notification for each child window // which may be redundant. nsIView *view; vm->GetRootView(view); if (view == aView) { aHandled = PR_TRUE; *aEventStatus = nsEventStatus_eConsumeDoDefault; return mPresContext->SysColorChanged(); } } return NS_OK; } // We really don't want to just drop a focus event on the floor here, // because the widget-level focus change will have already happened // by the time we get the event. Rather than dropping it, manually // update the focus controller here. if (aEvent->message == NS_GOTFOCUS && !mDidInitialReflow && mDocument) { nsCOMPtr sgo; mDocument->GetScriptGlobalObject(getter_AddRefs(sgo)); if (sgo) { nsCOMPtr pWindow = do_QueryInterface(sgo); if (pWindow) { nsCOMPtr controller; pWindow->GetRootFocusController(getter_AddRefs(controller)); if (controller) { nsCOMPtr domWin = do_QueryInterface(sgo); controller->SetFocusedWindow(domWin); controller->SetFocusedElement(nsnull); } } } } aView->GetClientData(clientData); frame = (nsIFrame *)clientData; /* if (mSelection && aEvent->eventStructType == NS_KEY_EVENT) {//KEY HANDLERS WILL GET RID OF THIS if (mSelectionFlags && NS_SUCCEEDED(mSelection->HandleKeyEvent(mPresContext, aEvent))) { return NS_OK; } } */ if (nsnull != frame) { PushCurrentEventInfo(nsnull, nsnull); nsIEventStateManager *manager; if (NS_OK == mPresContext->GetEventStateManager(&manager)) { //change 6-01-00 mjudge,ftang adding ime as an event that needs focused element if (NS_IS_KEY_EVENT(aEvent) || NS_IS_IME_EVENT(aEvent) || aEvent->message == NS_CONTEXTMENU_KEY) { //Key events go to the focused frame, not point based. manager->GetFocusedContent(&mCurrentEventContent); if (mCurrentEventContent) GetPrimaryFrameFor(mCurrentEventContent, &mCurrentEventFrame); else { // XXX This is the way key events seem to work? Why????? // They spend time doing calls to GetFrameForPoint with the // point as (0,0) (or sometimes something else). // XXX If this code is really going to stay, it should // probably go into a separate function, because its just // a duplicate of the code a few lines below: // This is because we want to give the point in the same // coordinates as the frame's own Rect, so mRect.Contains(aPoint) // works. However, this point is relative to the frame's rect, so // we need to add on the origin of the rect. /* nsPoint eventPoint; frame->GetOrigin(eventPoint); eventPoint += aEvent->point; rv = frame->GetFrameForPoint(mPresContext, eventPoint, NS_FRAME_PAINT_LAYER_FOREGROUND, &mCurrentEventFrame); if (rv != NS_OK) { rv = frame->GetFrameForPoint(mPresContext, eventPoint, NS_FRAME_PAINT_LAYER_FLOATERS, &mCurrentEventFrame); if (rv != NS_OK) { rv = frame->GetFrameForPoint(mPresContext, eventPoint, NS_FRAME_PAINT_LAYER_BACKGROUND, &mCurrentEventFrame); if (rv != NS_OK) { #ifdef XP_MAC*/ // On the Mac it is possible to be running with no windows open, only the native menu bar. // In this situation, we need to handle key board events but there are no frames, so // we set mCurrentEventContent and that works itself out in HandleEventInternal. mDocument->GetRootContent(&mCurrentEventContent); mCurrentEventFrame = nsnull; /*#else if (aForceHandle) { mCurrentEventFrame = frame; } else { mCurrentEventFrame = nsnull; } aHandled = PR_FALSE; #endif rv = NS_OK; } } } */ } } else if (!InClipRect(frame, aEvent->point)) { // we only check for the clip rect on this frame ... all frames with clip have views so any // viewless children of this frame cannot have clip. Furthermore if the event is not in the clip // for this frame, then none of the children can get it either. if (aForceHandle) { mCurrentEventFrame = frame; } else { mCurrentEventFrame = nsnull; } aHandled = PR_FALSE; rv = NS_OK; } else { // aEvent->point is relative to aView's upper left corner. We need // a point that is in the same coordinate system as frame's rect // so that the frame->mRect.Contains(aPoint) calls in // GetFrameForPoint() work. The assumption here is that frame->GetView() // will return aView, and frame's parent view is aView's parent. nsPoint eventPoint; frame->GetOrigin(eventPoint); eventPoint += aEvent->point; nsPoint originOffset; nsIView *view = nsnull; frame->GetOriginToViewOffset(mPresContext, originOffset, &view); #ifdef DEBUG_kin NS_ASSERTION(view == aView, "view != aView"); #endif // DEBUG_kin if (view == aView) eventPoint -= originOffset; rv = frame->GetFrameForPoint(mPresContext, eventPoint, NS_FRAME_PAINT_LAYER_FOREGROUND, &mCurrentEventFrame); if (rv != NS_OK) { rv = frame->GetFrameForPoint(mPresContext, eventPoint, NS_FRAME_PAINT_LAYER_FLOATERS, &mCurrentEventFrame); if (rv != NS_OK) { rv = frame->GetFrameForPoint(mPresContext, eventPoint, NS_FRAME_PAINT_LAYER_BACKGROUND, &mCurrentEventFrame); if (rv != NS_OK) { if (aForceHandle) { mCurrentEventFrame = frame; } else { mCurrentEventFrame = nsnull; } aHandled = PR_FALSE; rv = NS_OK; } } } } if (GetCurrentEventFrame()) { rv = HandleEventInternal(aEvent, aView, NS_EVENT_FLAG_INIT, aEventStatus); } NS_RELEASE(manager); } #ifdef NS_DEBUG if ((nsIFrameDebug::GetShowEventTargetFrameBorder()) && (GetCurrentEventFrame())) { nsIView *oldView = mCurrentTargetView; nsPoint offset(0,0); nsRect oldTargetRect(mCurrentTargetRect); mCurrentEventFrame->GetRect(mCurrentTargetRect); mCurrentEventFrame->GetView(mPresContext, &mCurrentTargetView); if ( ! mCurrentTargetView ) { mCurrentEventFrame->GetOffsetFromView(mPresContext, offset, &mCurrentTargetView); } if (mCurrentTargetView) { mCurrentTargetRect.x = offset.x; mCurrentTargetRect.y = offset.y; // use aView or mCurrentTargetView?? if ( (mCurrentTargetRect != oldTargetRect) || (mCurrentTargetView != oldView)) { nsIViewManager *vm; if ((NS_OK == GetViewManager(&vm)) && vm) { vm->UpdateView(mCurrentTargetView,mCurrentTargetRect,0); if (oldView) vm->UpdateView(oldView,oldTargetRect,0); NS_IF_RELEASE(vm); } } } } #endif PopCurrentEventInfo(); } else { aHandled = PR_FALSE; rv = NS_OK; } return rv; } NS_IMETHODIMP PresShell::HandleEventWithTarget(nsEvent* aEvent, nsIFrame* aFrame, nsIContent* aContent, PRUint32 aFlags, nsEventStatus* aStatus) { nsresult ret; PushCurrentEventInfo(aFrame, aContent); ret = HandleEventInternal(aEvent, nsnull, aFlags, aStatus); PopCurrentEventInfo(); return NS_OK; } nsresult PresShell::HandleEventInternal(nsEvent* aEvent, nsIView *aView, PRUint32 aFlags, nsEventStatus* aStatus) { #ifdef ACCESSIBILITY if (aEvent->eventStructType == NS_ACCESSIBLE_EVENT) { void* clientData; aView->GetClientData(clientData); nsIFrame* frame = (nsIFrame *)clientData; if (!frame) return NS_ERROR_FAILURE; return frame->HandleEvent(mPresContext, (nsGUIEvent*)aEvent, aStatus); } #endif nsresult rv = NS_OK; nsIEventStateManager *manager; if (NS_OK == mPresContext->GetEventStateManager(&manager) && GetCurrentEventFrame()) { //1. Give event to event manager for pre event state changes and generation of synthetic events. rv = manager->PreHandleEvent(mPresContext, aEvent, mCurrentEventFrame, aStatus, aView); //2. Give event to the DOM for third party and JS use. if ((GetCurrentEventFrame()) && NS_OK == rv) { if (mCurrentEventContent) { rv = mCurrentEventContent->HandleDOMEvent(mPresContext, aEvent, nsnull, aFlags, aStatus); } else { nsIContent* targetContent; if (NS_OK == mCurrentEventFrame->GetContentForEvent(mPresContext, aEvent, &targetContent) && nsnull != targetContent) { rv = targetContent->HandleDOMEvent(mPresContext, aEvent, nsnull, aFlags, aStatus); NS_RELEASE(targetContent); } } //3. Give event to the Frames for browser default processing. // XXX The event isn't translated into the local coordinate space // of the frame... if (GetCurrentEventFrame() && NS_OK == rv && aEvent->eventStructType != NS_EVENT) { rv = mCurrentEventFrame->HandleEvent(mPresContext, (nsGUIEvent*)aEvent, aStatus); } //4. Give event to event manager for post event state changes and generation of synthetic events. if ((GetCurrentEventFrame()) && NS_OK == rv) { rv = manager->PostHandleEvent(mPresContext, aEvent, mCurrentEventFrame, aStatus, aView); } } NS_RELEASE(manager); } return rv; } // Dispatch event to content only (NOT full processing) // See also HandleEventWithTarget which does full event processing. NS_IMETHODIMP PresShell::HandleDOMEventWithTarget(nsIContent* aTargetContent, nsEvent* aEvent, nsEventStatus* aStatus) { nsresult ret; PushCurrentEventInfo(nsnull, aTargetContent); // Bug 41013: Check if the event should be dispatched to content. // It's possible that we are in the middle of destroying the window // and the js context is out of date. This check detects the case // that caused a crash in bug 41013, but there may be a better way // to handle this situation! nsCOMPtr container; ret = mPresContext->GetContainer(getter_AddRefs(container)); if (NS_SUCCEEDED(ret) && container) { // Dispatch event to content ret = aTargetContent->HandleDOMEvent(mPresContext, aEvent, nsnull, NS_EVENT_FLAG_INIT, aStatus); } PopCurrentEventInfo(); return NS_OK; } NS_IMETHODIMP PresShell::Scrolled(nsIView *aView) { void* clientData; nsIFrame* frame; nsresult rv; NS_ASSERTION(!(nsnull == aView), "null view"); aView->GetClientData(clientData); frame = (nsIFrame *)clientData; if (nsnull != frame) rv = frame->Scrolled(aView); else rv = NS_OK; return rv; } NS_IMETHODIMP PresShell::ResizeReflow(nsIView *aView, nscoord aWidth, nscoord aHeight) { return ResizeReflow(aWidth, aHeight); } //-------------------------------------------------------- // Start of protected and private methods on the PresShell //-------------------------------------------------------- //-------------- Begin Reflow Event Definition ------------------------ struct ReflowEvent : public PLEvent { ReflowEvent(nsIPresShell* aPresShell); ~ReflowEvent() { } void HandleEvent() { nsCOMPtr presShell = do_QueryReferent(mPresShell); if (presShell) { #ifdef DEBUG if (VERIFY_REFLOW_NOISY_RC & gVerifyReflowFlags) { printf("\n*** Handling reflow event: PresShell=%p, event=%p\n", (void*)presShell.get(), (void*)this); } #endif // XXX Statically cast the pres shell pointer so that we can call // protected methods on the pres shell. (the ReflowEvent struct // is a friend of the PresShell class) PresShell* ps = NS_REINTERPRET_CAST(PresShell*, presShell.get()); PRBool isBatching; ps->ClearReflowEventStatus(); ps->GetReflowBatchingStatus(&isBatching); if (!isBatching) { nsCOMPtr viewManager; // Set a kung fu death grip on the view manager associated with the pres shell // before processing that pres shell's reflow commands. Fixes bug 54868. presShell->GetViewManager(getter_AddRefs(viewManager)); ps->ProcessReflowCommands(PR_TRUE); // Now, explicitly release the pres shell before the view manager presShell = nsnull; viewManager = nsnull; } } else mPresShell = 0; } nsWeakPtr mPresShell; }; static void PR_CALLBACK HandlePLEvent(ReflowEvent* aEvent) { aEvent->HandleEvent(); } static void PR_CALLBACK DestroyPLEvent(ReflowEvent* aEvent) { delete aEvent; } ReflowEvent::ReflowEvent(nsIPresShell* aPresShell) { NS_ASSERTION(aPresShell, "Null parameters!"); mPresShell = getter_AddRefs(NS_GetWeakReference(aPresShell)); PL_InitEvent(this, aPresShell, (PLHandleEventProc) ::HandlePLEvent, (PLDestroyEventProc) ::DestroyPLEvent); } //-------------- End Reflow Event Definition --------------------------- void PresShell::PostReflowEvent() { nsCOMPtr eventQueue; mEventQueueService->GetSpecialEventQueue(nsIEventQueueService::UI_THREAD_EVENT_QUEUE, getter_AddRefs(eventQueue)); if (eventQueue != mReflowEventQueue && !mIsReflowing && mReflowCommands.Count() > 0) { ReflowEvent* ev = new ReflowEvent(NS_STATIC_CAST(nsIPresShell*, this)); eventQueue->PostEvent(ev); mReflowEventQueue = eventQueue; #ifdef DEBUG if (VERIFY_REFLOW_NOISY_RC & gVerifyReflowFlags) { printf("\n*** PresShell::PostReflowEvent(), this=%p, event=%p\n", (void*)this, (void*)ev); } #endif } } nsresult PresShell::WillCauseReflow() { mViewManager->CacheWidgetChanges(PR_TRUE); return NS_OK; } nsresult PresShell::DidCauseReflow() { if (mViewManager) { mViewManager->CacheWidgetChanges(PR_FALSE); } // We may have had more reflow commands appended to the queue during // our reflow. Make sure these get processed at some point. if (!gAsyncReflowDuringDocLoad && mDocumentLoading) { FlushPendingNotifications(PR_FALSE); } else { PostReflowEvent(); } return NS_OK; } nsresult PresShell::ProcessReflowCommands(PRBool aInterruptible) { MOZ_TIMER_DEBUGLOG(("Start: Reflow: PresShell::ProcessReflowCommands(), this=%p\n", this)); MOZ_TIMER_START(mReflowWatch); if (0 != mReflowCommands.Count()) { nsHTMLReflowMetrics desiredSize(nsnull); nsIRenderingContext* rcx; nsIFrame* rootFrame; mFrameManager->GetRootFrame(&rootFrame); nsSize maxSize; rootFrame->GetSize(maxSize); nsresult rv=CreateRenderingContext(rootFrame, &rcx); if (NS_FAILED(rv)) return rv; #ifdef DEBUG if (GetVerifyReflowEnable()) { if (VERIFY_REFLOW_ALL & gVerifyReflowFlags) { printf("ProcessReflowCommands: begin incremental reflow\n"); } } if (VERIFY_REFLOW_DUMP_COMMANDS & gVerifyReflowFlags) { PRInt32 i, n = mReflowCommands.Count(); printf("\nPresShell::ProcessReflowCommands: this=%p, count=%d\n", (void*)this, n); for (i = 0; i < n; i++) { nsHTMLReflowCommand* rc = (nsHTMLReflowCommand*) mReflowCommands.ElementAt(i); rc->List(stdout); } } #endif // If reflow is interruptible, then make a note of our deadline. PRIntervalTime deadline; if (aInterruptible) deadline = PR_IntervalNow() + PR_MicrosecondsToInterval(gMaxRCProcessingTime); mIsReflowing = PR_TRUE; do { // Coalesce the reflow commands into a tree. IncrementalReflow reflow; for (PRInt32 i = mReflowCommands.Count() - 1; i >= 0; --i) { nsHTMLReflowCommand *command = NS_STATIC_CAST(nsHTMLReflowCommand *, mReflowCommands[i]); if (reflow.AddCommand(mPresContext, command)) { // Remove the command from the queue. mReflowCommands.RemoveElementAt(i); ReflowCommandRemoved(command); } else { // The reflow command couldn't be added to the tree; leave // it in the queue, and we'll handle it next time. #ifdef DEBUG printf("WARNING: Couldn't add reflow command, so splitting.\n"); #endif } } #ifdef DEBUG if (VERIFY_REFLOW_NOISY_RC & gVerifyReflowFlags) { printf("Incremental reflow tree:\n"); reflow.Dump(mPresContext); } #endif // Dispatch an incremental reflow. reflow.Dispatch(mPresContext, desiredSize, maxSize, *rcx); // Keep going until we're out of reflow commands, or we've run // past our deadline. } while (mReflowCommands.Count() && (!aInterruptible || PR_IntervalNow() < deadline)); // XXXwaterson for interruptible reflow, examine the tree and // re-enqueue any unflowed reflow targets. mIsReflowing = PR_FALSE; NS_IF_RELEASE(rcx); // If any new reflow commands were enqueued during the reflow, // schedule another reflow event to process them. if (mReflowCommands.Count()) PostReflowEvent(); #ifdef DEBUG if (VERIFY_REFLOW_DUMP_COMMANDS & gVerifyReflowFlags) { printf("\nPresShell::ProcessReflowCommands() finished: this=%p\n", (void*)this); } if (nsIFrameDebug::GetVerifyTreeEnable()) { nsIFrameDebug* frameDebug; if (NS_SUCCEEDED(rootFrame->QueryInterface(NS_GET_IID(nsIFrameDebug), (void**)&frameDebug))) { frameDebug->VerifyTree(); } } if (GetVerifyReflowEnable()) { // First synchronously render what we have so far so that we can // see it. nsIView* rootView; mViewManager->GetRootView(rootView); mViewManager->UpdateView(rootView, NS_VMREFRESH_IMMEDIATE); mInVerifyReflow = PR_TRUE; PRBool ok = VerifyIncrementalReflow(); mInVerifyReflow = PR_FALSE; if (VERIFY_REFLOW_ALL & gVerifyReflowFlags) { printf("ProcessReflowCommands: finished (%s)\n", ok ? "ok" : "failed"); } if (0 != mReflowCommands.Count()) { printf("XXX yikes! reflow commands queued during verify-reflow\n"); } } #endif // If there are no more reflow commands in the queue, we'll want // to remove the ``dummy request''. DoneRemovingReflowCommands(); } MOZ_TIMER_DEBUGLOG(("Stop: Reflow: PresShell::ProcessReflowCommands(), this=%p\n", this)); MOZ_TIMER_STOP(mReflowWatch); HandlePostedDOMEvents(); HandlePostedAttributeChanges(); HandlePostedReflowCallbacks(); if (mShouldUnsuppressPainting && mReflowCommands.Count() == 0) { // We only unlock if we're out of reflows. It's pointless // to unlock if reflows are still pending, since reflows // are just going to thrash the frames around some more. By // waiting we avoid an overeager "jitter" effect. mShouldUnsuppressPainting = PR_FALSE; UnsuppressAndInvalidate(); } return NS_OK; } nsresult PresShell::ClearReflowEventStatus() { mReflowEventQueue = nsnull; return NS_OK; } nsresult PresShell::CloneStyleSet(nsIStyleSet* aSet, nsIStyleSet** aResult) { nsresult rv; nsCOMPtr clone(do_CreateInstance(kStyleSetCID,&rv)); if (NS_FAILED(rv)) { return rv; } PRInt32 i, n; n = aSet->GetNumberOfOverrideStyleSheets(); for (i = 0; i < n; i++) { nsIStyleSheet* ss; ss = aSet->GetOverrideStyleSheetAt(i); if (nsnull != ss) { clone->AppendOverrideStyleSheet(ss); NS_RELEASE(ss); } } n = aSet->GetNumberOfDocStyleSheets(); for (i = 0; i < n; i++) { nsIStyleSheet* ss; ss = aSet->GetDocStyleSheetAt(i); if (nsnull != ss) { clone->AddDocStyleSheet(ss, mDocument); NS_RELEASE(ss); } } n = aSet->GetNumberOfUserStyleSheets(); for (i = 0; i < n; i++) { nsIStyleSheet* ss; ss = aSet->GetUserStyleSheetAt(i); if (nsnull != ss) { clone->AppendUserStyleSheet(ss); NS_RELEASE(ss); } } n = aSet->GetNumberOfAgentStyleSheets(); for (i = 0; i < n; i++) { nsIStyleSheet* ss; ss = aSet->GetAgentStyleSheetAt(i); if (nsnull != ss) { clone->AppendAgentStyleSheet(ss); NS_RELEASE(ss); } } *aResult = clone.get(); NS_ADDREF(*aResult); return NS_OK; } nsresult PresShell::ReflowCommandAdded(nsHTMLReflowCommand* aRC) { if (gAsyncReflowDuringDocLoad) { NS_PRECONDITION(mRCCreatedDuringLoad >= 0, "PresShell's reflow command queue is in a bad state."); if (mDocumentLoading) { PRInt32 flags; aRC->GetFlags(&flags); flags |= NS_RC_CREATED_DURING_DOCUMENT_LOAD; aRC->SetFlags(flags); mRCCreatedDuringLoad++; #ifdef PR_LOGGING if (PR_LOG_TEST(gLog, PR_LOG_DEBUG)) { nsIFrame* target; aRC->GetTarget(target); nsCOMPtr type; target->GetFrameType(getter_AddRefs(type)); NS_ASSERTION(type, "frame didn't override GetFrameType()"); nsAutoString typeStr(NS_LITERAL_STRING("unknown")); if (type) type->ToString(typeStr); PR_LOG(gLog, PR_LOG_DEBUG, ("presshell=%p, ReflowCommandAdded(%p) target=%p[%s] mRCCreatedDuringLoad=%d\n", this, aRC, target, NS_ConvertUCS2toUTF8(typeStr).get(), mRCCreatedDuringLoad)); } #endif if (!mDummyLayoutRequest) { AddDummyLayoutRequest(); } } } return NS_OK; } nsresult PresShell::ReflowCommandRemoved(nsHTMLReflowCommand* aRC) { if (gAsyncReflowDuringDocLoad) { NS_PRECONDITION(mRCCreatedDuringLoad >= 0, "PresShell's reflow command queue is in a bad state."); PRInt32 flags; aRC->GetFlags(&flags); if (flags & NS_RC_CREATED_DURING_DOCUMENT_LOAD) { mRCCreatedDuringLoad--; PR_LOG(gLog, PR_LOG_DEBUG, ("presshell=%p, ReflowCommandRemoved(%p) mRCCreatedDuringLoad=%d\n", this, aRC, mRCCreatedDuringLoad)); } } return NS_OK; } void PresShell::DoneRemovingReflowCommands() { if (mRCCreatedDuringLoad == 0 && mDummyLayoutRequest && !mIsReflowing) { RemoveDummyLayoutRequest(); } } nsresult PresShell::AddDummyLayoutRequest(void) { nsresult rv = NS_OK; if (gAsyncReflowDuringDocLoad && !mIsReflowing) { rv = nsDummyLayoutRequest::Create(getter_AddRefs(mDummyLayoutRequest), this); if (NS_FAILED(rv)) return rv; nsCOMPtr loadGroup; if (mDocument) { rv = mDocument->GetDocumentLoadGroup(getter_AddRefs(loadGroup)); if (NS_FAILED(rv)) return rv; } if (loadGroup) { rv = mDummyLayoutRequest->SetLoadGroup(loadGroup); if (NS_FAILED(rv)) return rv; rv = loadGroup->AddRequest(mDummyLayoutRequest, nsnull); if (NS_FAILED(rv)) return rv; PR_LOG(gLog, PR_LOG_ALWAYS, ("presshell=%p, Added dummy layout request %p", this, mDummyLayoutRequest.get())); } } return rv; } nsresult PresShell::RemoveDummyLayoutRequest(void) { nsresult rv = NS_OK; if (gAsyncReflowDuringDocLoad) { nsCOMPtr loadGroup; if (mDocument) { rv = mDocument->GetDocumentLoadGroup(getter_AddRefs(loadGroup)); if (NS_FAILED(rv)) return rv; } if (loadGroup && mDummyLayoutRequest) { rv = loadGroup->RemoveRequest(mDummyLayoutRequest, nsnull, NS_OK); if (NS_FAILED(rv)) return rv; PR_LOG(gLog, PR_LOG_ALWAYS, ("presshell=%p, Removed dummy layout request %p", this, mDummyLayoutRequest.get())); mDummyLayoutRequest = nsnull; } } return rv; } //------------------------------------------------------ // End of protected and private methods on the PresShell //------------------------------------------------------ // Start of DEBUG only code #ifdef NS_DEBUG #include "nsViewsCID.h" #include "nsWidgetsCID.h" #include "nsIScrollableView.h" #include "nsIDeviceContext.h" #include "nsIURL.h" #include "nsILinkHandler.h" static NS_DEFINE_CID(kViewManagerCID, NS_VIEW_MANAGER_CID); static NS_DEFINE_CID(kScrollingViewCID, NS_SCROLLING_VIEW_CID); static NS_DEFINE_CID(kWidgetCID, NS_CHILD_CID); static void LogVerifyMessage(nsIFrame* k1, nsIFrame* k2, const char* aMsg) { printf("verifyreflow: "); nsAutoString name; if (nsnull != k1) { nsIFrameDebug* frameDebug; if (NS_SUCCEEDED(k1->QueryInterface(NS_GET_IID(nsIFrameDebug), (void**)&frameDebug))) { frameDebug->GetFrameName(name); } } else { name.Assign(NS_LITERAL_STRING("(null)")); } fputs(NS_LossyConvertUCS2toASCII(name).get(), stdout); printf(" != "); if (nsnull != k2) { nsIFrameDebug* frameDebug; if (NS_SUCCEEDED(k2->QueryInterface(NS_GET_IID(nsIFrameDebug), (void**)&frameDebug))) { frameDebug->GetFrameName(name); } } else { name.Assign(NS_LITERAL_STRING("(null)")); } fputs(NS_LossyConvertUCS2toASCII(name).get(), stdout); printf(" %s", aMsg); } static void LogVerifyMessage(nsIFrame* k1, nsIFrame* k2, const char* aMsg, const nsRect& r1, const nsRect& r2) { printf("VerifyReflow Error:\n"); nsAutoString name; nsIFrameDebug* frameDebug; if (NS_SUCCEEDED(k1->QueryInterface(NS_GET_IID(nsIFrameDebug), (void**)&frameDebug))) { fprintf(stdout, " "); frameDebug->GetFrameName(name); fputs(NS_LossyConvertUCS2toASCII(name).get(), stdout); fprintf(stdout, " %p ", (void*)k1); } printf("{%d, %d, %d, %d}", r1.x, r1.y, r1.width, r1.height); printf(" != \n"); if (NS_SUCCEEDED(k2->QueryInterface(NS_GET_IID(nsIFrameDebug), (void**)&frameDebug))) { fprintf(stdout, " "); frameDebug->GetFrameName(name); fputs(NS_LossyConvertUCS2toASCII(name).get(), stdout); fprintf(stdout, " %p ", (void*)k2); } printf("{%d, %d, %d, %d}\n", r2.x, r2.y, r2.width, r2.height); printf(" %s\n", aMsg); } static PRBool CompareTrees(nsIPresContext* aFirstPresContext, nsIFrame* aFirstFrame, nsIPresContext* aSecondPresContext, nsIFrame* aSecondFrame) { if (!aFirstPresContext || !aFirstFrame || !aSecondPresContext || !aSecondFrame) return PR_TRUE; PRBool ok = PR_TRUE; nsIAtom* listName = nsnull; PRInt32 listIndex = 0; do { nsIFrame* k1, *k2; aFirstFrame->FirstChild(aFirstPresContext, listName, &k1); aSecondFrame->FirstChild(aSecondPresContext, listName, &k2); PRInt32 l1 = nsContainerFrame::LengthOf(k1); PRInt32 l2 = nsContainerFrame::LengthOf(k2); if (l1 != l2) { ok = PR_FALSE; LogVerifyMessage(k1, k2, "child counts don't match: "); printf("%d != %d\n", l1, l2); if (0 == (VERIFY_REFLOW_ALL & gVerifyReflowFlags)) { break; } } nsRect r1, r2; nsIView* v1, *v2; nsCOMPtr w1; nsCOMPtr w2; for (;;) { if (((nsnull == k1) && (nsnull != k2)) || ((nsnull != k1) && (nsnull == k2))) { ok = PR_FALSE; LogVerifyMessage(k1, k2, "child lists are different\n"); break; } else if (nsnull != k1) { // Verify that the frames are the same size k1->GetRect(r1); k2->GetRect(r2); if (r1 != r2) { ok = PR_FALSE; LogVerifyMessage(k1, k2, "(frame rects)", r1, r2); } // Make sure either both have views or neither have views; if they // do have views, make sure the views are the same size. If the // views have widgets, make sure they both do or neither does. If // they do, make sure the widgets are the same size. k1->GetView(aFirstPresContext, &v1); k2->GetView(aSecondPresContext, &v2); if (((nsnull == v1) && (nsnull != v2)) || ((nsnull != v1) && (nsnull == v2))) { ok = PR_FALSE; LogVerifyMessage(k1, k2, "child views are not matched\n"); } else if (nsnull != v1) { v1->GetBounds(r1); v2->GetBounds(r2); if (r1 != r2) { LogVerifyMessage(k1, k2, "(view rects)", r1, r2); } v1->GetWidget(*getter_AddRefs(w1)); v2->GetWidget(*getter_AddRefs(w2)); if (((nsnull == w1) && (nsnull != w2)) || ((nsnull != w1) && (nsnull == w2))) { ok = PR_FALSE; LogVerifyMessage(k1, k2, "child widgets are not matched\n"); } else if (nsnull != w1) { w1->GetBounds(r1); w2->GetBounds(r2); if (r1 != r2) { LogVerifyMessage(k1, k2, "(widget rects)", r1, r2); } } } if (!ok && (0 == (VERIFY_REFLOW_ALL & gVerifyReflowFlags))) { break; } // verify that neither frame has a space manager, // or they both do and the space managers are equivalent nsCOMPtrfm1; nsCOMPtr ps1; nsSpaceManager *sm1; aFirstPresContext->GetShell(getter_AddRefs(ps1)); NS_ASSERTION(ps1, "no pres shell for primary tree!"); ps1->GetFrameManager(getter_AddRefs(fm1)); NS_ASSERTION(fm1, "no frame manager for primary tree!"); fm1->GetFrameProperty((nsIFrame*)k1, nsLayoutAtoms::spaceManagerProperty, 0, (void **)&sm1); // look at the test frame nsCOMPtrfm2; nsCOMPtr ps2; nsSpaceManager *sm2; aSecondPresContext->GetShell(getter_AddRefs(ps2)); NS_ASSERTION(ps2, "no pres shell for test tree!"); ps2->GetFrameManager(getter_AddRefs(fm2)); NS_ASSERTION(fm2, "no frame manager for test tree!"); fm2->GetFrameProperty((nsIFrame*)k2, nsLayoutAtoms::spaceManagerProperty, 0, (void **)&sm2); // now compare the space managers if (((nsnull == sm1) && (nsnull != sm2)) || ((nsnull != sm1) && (nsnull == sm2))) { // one is null, and the other is not ok = PR_FALSE; LogVerifyMessage(k1, k2, "space managers are not matched\n"); } else if (sm1 && sm2) { // both are not null, compare them // first, compare yMost nscoord yMost1, yMost2; nsresult smresult = sm1->YMost(yMost1); if (NS_ERROR_ABORT != smresult) { NS_ASSERTION(NS_SUCCEEDED(smresult), "bad result"); smresult = sm2->YMost(yMost2); NS_ASSERTION(NS_SUCCEEDED(smresult), "bad result"); if (yMost1 != yMost2) { LogVerifyMessage(k1, k2, "yMost of space managers differs\n"); } // now compare bands by sampling PRInt32 yIncrement = yMost1/100; if (0==yIncrement) { yIncrement = 1; // guarantee we make progress in the loop below } nscoord yOffset = 0; for ( ; ok && yOffset < yMost1; yOffset += yIncrement) { nscoord small=5, large=100; nsBandData band1, band2; nsBandTrapezoid trap1[20], trap2[20]; band1.mSize = band2.mSize = 20; band1.mTrapezoids = trap1; band2.mTrapezoids = trap2; sm1->GetBandData(yOffset, nsSize(small,small), band1); sm2->GetBandData(yOffset, nsSize(small,small), band2); if (band1.mCount != band2.mCount) { // count mismatch, stop comparing LogVerifyMessage(k1, k2, "band.mCount of space managers differs\n"); printf("count1= %d, count2=%d, yOffset = %d, size=%d\n", band1.mCount, band2.mCount, yOffset, small); ok = PR_FALSE; } else // band counts match, compare individual traps { PRInt32 trapIndex=0; for ( ;trapIndexGetBandData(yOffset, nsSize(large,large), band1); sm2->GetBandData(yOffset, nsSize(large,large), band2); if (band1.mCount != band2.mCount) { // count mismatch, stop comparing LogVerifyMessage(k1, k2, "band.mCount of space managers differs\n"); printf("count1= %d, count2=%d, yOffset = %d, size=%d\n", band1.mCount, band2.mCount, yOffset, small); ok = PR_FALSE; } else // band counts match, compare individual traps { PRInt32 trapIndex=0; for ( ; trapIndexGetNextSibling(&k1); k2->GetNextSibling(&k2); } else { break; } } if (!ok && (0 == (VERIFY_REFLOW_ALL & gVerifyReflowFlags))) { break; } NS_IF_RELEASE(listName); nsIAtom* listName1; nsIAtom* listName2; aFirstFrame->GetAdditionalChildListName(listIndex, &listName1); aSecondFrame->GetAdditionalChildListName(listIndex, &listName2); listIndex++; if (listName1 != listName2) { if (0 == (VERIFY_REFLOW_ALL & gVerifyReflowFlags)) { ok = PR_FALSE; } LogVerifyMessage(k1, k2, "child list names are not matched: "); nsAutoString tmp; if (nsnull != listName1) { listName1->ToString(tmp); fputs(NS_LossyConvertUCS2toASCII(tmp).get(), stdout); } else fputs("(null)", stdout); printf(" != "); if (nsnull != listName2) { listName2->ToString(tmp); fputs(NS_LossyConvertUCS2toASCII(tmp).get(), stdout); } else fputs("(null)", stdout); printf("\n"); NS_IF_RELEASE(listName1); NS_IF_RELEASE(listName2); break; } NS_IF_RELEASE(listName2); listName = listName1; } while (ok && (listName != nsnull)); return ok; } #endif #if 0 static nsIFrame* FindTopFrame(nsIFrame* aRoot) { if (nsnull != aRoot) { nsIContent* content; aRoot->GetContent(&content); if (nsnull != content) { nsIAtom* tag; content->GetTag(tag); if (nsnull != tag) { NS_RELEASE(tag); NS_RELEASE(content); return aRoot; } NS_RELEASE(content); } // Try one of the children nsIFrame* kid; aRoot->FirstChild(nsnull, &kid); while (nsnull != kid) { nsIFrame* result = FindTopFrame(kid); if (nsnull != result) { return result; } kid->GetNextSibling(&kid); } } return nsnull; } #endif #ifdef DEBUG // After an incremental reflow, we verify the correctness by doing a // full reflow into a fresh frame tree. PRBool PresShell::VerifyIncrementalReflow() { if (VERIFY_REFLOW_NOISY & gVerifyReflowFlags) { printf("Building Verification Tree...\n"); } // All the stuff we are creating that needs releasing nsIPresContext* cx; nsIViewManager* vm; nsIPresShell* sh; // Create a presentation context to view the new frame tree nsresult rv; PRBool isPaginated = PR_FALSE; mPresContext->IsPaginated(&isPaginated); if (isPaginated) { nsCOMPtr ppx = do_CreateInstance(kPrintPreviewContextCID, &rv); if (NS_SUCCEEDED(rv)) { ppx->QueryInterface(NS_GET_IID(nsIPresContext),(void**)&cx); } } else { rv = NS_NewGalleyContext(&cx); } nsISupports* container; if (NS_SUCCEEDED(mPresContext->GetContainer(&container)) && (nsnull != container)) { cx->SetContainer(container); nsILinkHandler* lh; if (NS_SUCCEEDED(container->QueryInterface(NS_GET_IID(nsILinkHandler), (void**)&lh))) { cx->SetLinkHandler(lh); NS_RELEASE(lh); } NS_RELEASE(container); } NS_ASSERTION(NS_OK == rv, "failed to create presentation context"); nsCOMPtr dc; mPresContext->GetDeviceContext(getter_AddRefs(dc)); cx->Init(dc); // Get our scrolling preference nsScrollPreference scrolling; nsIView* rootView; mViewManager->GetRootView(rootView); nsIScrollableView* scrollView; rv = rootView->QueryInterface(NS_GET_IID(nsIScrollableView), (void**)&scrollView); if (NS_OK == rv) { scrollView->GetScrollPreference(scrolling); } nsCOMPtr rootWidget; rootView->GetWidget(*getter_AddRefs(rootWidget)); void* nativeParentWidget = rootWidget->GetNativeData(NS_NATIVE_WIDGET); // Create a new view manager. rv = nsComponentManager::CreateInstance(kViewManagerCID, nsnull, NS_GET_IID(nsIViewManager), (void**) &vm); if (NS_FAILED(rv)) { NS_ASSERTION(NS_OK == rv, "failed to create view manager"); } rv = vm->Init(dc); if (NS_FAILED(rv)) { NS_ASSERTION(NS_OK == rv, "failed to init view manager"); } // Create a child window of the parent that is our "root view/window" // Create a view nsRect tbounds; mPresContext->GetVisibleArea(tbounds); nsIView* view; rv = nsComponentManager::CreateInstance(kViewCID, nsnull, NS_GET_IID(nsIView), (void **) &view); if (NS_FAILED(rv)) { NS_ASSERTION(NS_OK == rv, "failed to create scroll view"); } rv = view->Init(vm, tbounds, nsnull); if (NS_FAILED(rv)) { NS_ASSERTION(NS_OK == rv, "failed to init scroll view"); } //now create the widget for the view rv = view->CreateWidget(kWidgetCID, nsnull, nativeParentWidget); if (NS_OK != rv) { NS_ASSERTION(NS_OK == rv, "failed to create scroll view widget"); } // Setup hierarchical relationship in view manager vm->SetRootView(view); // Make the new presentation context the same size as our // presentation context. nsRect r; mPresContext->GetVisibleArea(r); cx->SetVisibleArea(r); // Create a new presentation shell to view the document. Use the // exact same style information that this document has. nsCOMPtr newSet; rv = CloneStyleSet(mStyleSet, getter_AddRefs(newSet)); NS_ASSERTION(NS_SUCCEEDED(rv), "failed to clone style set"); rv = mDocument->CreateShell(cx, vm, newSet, &sh); sh->SetVerifyReflowEnable(PR_FALSE); // turn off verify reflow while we're reflowing the test frame tree NS_ASSERTION(NS_OK == rv, "failed to create presentation shell"); vm->SetViewObserver((nsIViewObserver *)((PresShell*)sh)); sh->InitialReflow(r.width, r.height); sh->SetVerifyReflowEnable(PR_TRUE); // turn on verify reflow again now that we're done reflowing the test frame tree if (VERIFY_REFLOW_NOISY & gVerifyReflowFlags) { printf("Verification Tree built, comparing...\n"); } // Now that the document has been reflowed, use its frame tree to // compare against our frame tree. nsIFrame* root1; GetRootFrame(&root1); nsIFrame* root2; sh->GetRootFrame(&root2); PRBool ok = CompareTrees(mPresContext, root1, cx, root2); if (!ok && (VERIFY_REFLOW_NOISY & gVerifyReflowFlags)) { printf("Verify reflow failed, primary tree:\n"); nsIFrameDebug* frameDebug; if (NS_SUCCEEDED(root1->QueryInterface(NS_GET_IID(nsIFrameDebug), (void**)&frameDebug))) { frameDebug->List(mPresContext, stdout, 0); } printf("Verification tree:\n"); if (NS_SUCCEEDED(root2->QueryInterface(NS_GET_IID(nsIFrameDebug), (void**)&frameDebug))) { frameDebug->List(mPresContext, stdout, 0); } } cx->SetContainer(nsnull); NS_RELEASE(cx); sh->EndObservingDocument(); NS_RELEASE(sh); NS_RELEASE(vm); if (VERIFY_REFLOW_NOISY & gVerifyReflowFlags) { printf("Finished Verifying Reflow...\n"); } return ok; } #endif // PresShellViewEventListener NS_IMPL_ISUPPORTS2(PresShellViewEventListener, nsIScrollPositionListener, nsICompositeListener) PresShellViewEventListener::PresShellViewEventListener() { NS_INIT_ISUPPORTS(); mPresShell = 0; mWasVisible = PR_FALSE; mCallCount = 0; } PresShellViewEventListener::~PresShellViewEventListener() { mPresShell = 0; } nsresult PresShellViewEventListener::SetPresShell(nsIPresShell *aPresShell) { mPresShell = aPresShell; return NS_OK; } nsresult PresShellViewEventListener::HideCaret() { nsresult result = NS_OK; if (mPresShell && 0 == mCallCount) { nsCOMPtr selCon = do_QueryInterface(mPresShell); if (selCon) { result = selCon->GetCaretEnabled(&mWasVisible); if (NS_SUCCEEDED(result) && mWasVisible) result = selCon->SetCaretEnabled(PR_FALSE); } } ++mCallCount; return result; } nsresult PresShellViewEventListener::RestoreCaretVisibility() { nsresult result = NS_OK; --mCallCount; if (mPresShell && 0 == mCallCount && mWasVisible) { nsCOMPtr selCon = do_QueryInterface(mPresShell); if (selCon) result = selCon->SetCaretEnabled(PR_TRUE); } return result; } NS_IMETHODIMP PresShellViewEventListener::ScrollPositionWillChange(nsIScrollableView *aView, nscoord aX, nscoord aY) { return HideCaret(); } NS_IMETHODIMP PresShellViewEventListener::ScrollPositionDidChange(nsIScrollableView *aView, nscoord aX, nscoord aY) { return RestoreCaretVisibility(); } NS_IMETHODIMP PresShellViewEventListener::WillRefreshRegion(nsIViewManager *aViewManager, nsIView *aView, nsIRenderingContext *aContext, nsIRegion *aRegion, PRUint32 aUpdateFlags) { return HideCaret(); } NS_IMETHODIMP PresShellViewEventListener::DidRefreshRegion(nsIViewManager *aViewManager, nsIView *aView, nsIRenderingContext *aContext, nsIRegion *aRegion, PRUint32 aUpdateFlags) { return RestoreCaretVisibility(); } NS_IMETHODIMP PresShellViewEventListener::WillRefreshRect(nsIViewManager *aViewManager, nsIView *aView, nsIRenderingContext *aContext, const nsRect *aRect, PRUint32 aUpdateFlags) { return HideCaret(); } NS_IMETHODIMP PresShellViewEventListener::DidRefreshRect(nsIViewManager *aViewManager, nsIView *aView, nsIRenderingContext *aContext, const nsRect *aRect, PRUint32 aUpdateFlags) { return RestoreCaretVisibility(); } // Enable, Disable and Print, Start, Stop and/or Reset the StyleSet watch /*static*/ nsresult CtlStyleWatch(PRUint32 aCtlValue, nsIStyleSet *aStyleSet) { NS_ASSERTION(aStyleSet!=nsnull,"aStyleSet cannot be null in CtlStyleWatch"); nsresult rv = NS_OK; #ifdef MOZ_PERF_METRICS if (aStyleSet != nsnull){ nsCOMPtr watch = do_QueryInterface(aStyleSet, &rv); if (NS_SUCCEEDED(rv) && watch) { if (aCtlValue & kStyleWatchEnable){ watch->EnableTimer(NS_TIMER_STYLE_RESOLUTION); } if (aCtlValue & kStyleWatchDisable){ watch->DisableTimer(NS_TIMER_STYLE_RESOLUTION); } if (aCtlValue & kStyleWatchPrint){ watch->PrintTimer(NS_TIMER_STYLE_RESOLUTION); } if (aCtlValue & kStyleWatchStart){ watch->StartTimer(NS_TIMER_STYLE_RESOLUTION); } if (aCtlValue & kStyleWatchStop){ watch->StopTimer(NS_TIMER_STYLE_RESOLUTION); } if (aCtlValue & kStyleWatchReset){ watch->ResetTimer(NS_TIMER_STYLE_RESOLUTION); } } } #endif return rv; } //============================================================= //============================================================= //-- Debug Reflow Counts //============================================================= //============================================================= #ifdef MOZ_REFLOW_PERF //------------------------------------------------------------- NS_IMETHODIMP PresShell::DumpReflows() { if (mReflowCountMgr) { nsCAutoString uriStr; if (mDocument) { nsCOMPtr uri; mDocument->GetDocumentURL(getter_AddRefs(uri)); if (uri) { uri->GetPath(uriStr); } } mReflowCountMgr->DisplayTotals(uriStr.get()); mReflowCountMgr->DisplayHTMLTotals(uriStr.get()); mReflowCountMgr->DisplayDiffsInTotals("Differences"); } return NS_OK; } //------------------------------------------------------------- NS_IMETHODIMP PresShell::CountReflows(const char * aName, PRUint32 aType, nsIFrame * aFrame) { if (mReflowCountMgr) { mReflowCountMgr->Add(aName, (nsReflowReason)aType, aFrame); } return NS_OK; } //------------------------------------------------------------- NS_IMETHODIMP PresShell::PaintCount(const char * aName, nsIRenderingContext* aRenderingContext, nsIPresContext* aPresContext, nsIFrame * aFrame, PRUint32 aColor) { if (mReflowCountMgr) { mReflowCountMgr->PaintCount(aName, aRenderingContext, aPresContext, aFrame, aColor); } return NS_OK; } //------------------------------------------------------------- NS_IMETHODIMP PresShell::SetPaintFrameCount(PRBool aPaintFrameCounts) { if (mReflowCountMgr) { mReflowCountMgr->SetPaintFrameCounts(aPaintFrameCounts); } return NS_OK; } //------------------------------------------------------------------ //-- Reflow Counter Classes Impls //------------------------------------------------------------------ //------------------------------------------------------------------ ReflowCounter::ReflowCounter(ReflowCountMgr * aMgr) : mMgr(aMgr) { ClearTotals(); SetTotalsCache(); } //------------------------------------------------------------------ ReflowCounter::~ReflowCounter() { } //------------------------------------------------------------------ void ReflowCounter::ClearTotals() { for (PRUint32 i=0;iLookUp(kGrandTotalsStr); printf("%25s\t", aTitle); for (i=0;i 0) { gTots->Add((nsReflowReason)i, aArray[i]); } } printf("%d\n", total); } //------------------------------------------------------------------ void ReflowCounter::DisplayHTMLTotals(PRUint32 * aArray, const char * aTitle) { // figure total PRUint32 total = 0; PRUint32 i; for (i=0;iLookUp(kGrandTotalsStr); FILE * fd = mMgr->GetOutFile(); if (!fd) { return; } fprintf(fd, "
%s
", aTitle); for (i=0;i
"); if (aArray[i]) { fprintf(fd, "%d", aArray[i]); } else { fprintf(fd, " "); } fprintf(fd, "
"); if (gTots != this && aArray[i] > 0) { gTots->Add((nsReflowReason)i, aArray[i]); } } fprintf(fd, "
%d
\n", total); } //------------------------------------------------------------------ //-- ReflowCountMgr //------------------------------------------------------------------ ReflowCountMgr::ReflowCountMgr() { mCounts = PL_NewHashTable(10, PL_HashString, PL_CompareStrings, PL_CompareValues, nsnull, nsnull); mIndiFrameCounts = PL_NewHashTable(10, PL_HashString, PL_CompareStrings, PL_CompareValues, nsnull, nsnull); mCycledOnce = PR_FALSE; mDumpFrameCounts = PR_FALSE; mDumpFrameByFrameCounts = PR_FALSE; mPaintFrameByFrameCounts = PR_FALSE; } //------------------------------------------------------------------ ReflowCountMgr::~ReflowCountMgr() { CleanUp(); } //------------------------------------------------------------------ ReflowCounter * ReflowCountMgr::LookUp(const char * aName) { if (nsnull != mCounts) { ReflowCounter * counter = (ReflowCounter *)PL_HashTableLookup(mCounts, aName); return counter; } return nsnull; } //------------------------------------------------------------------ void ReflowCountMgr::Add(const char * aName, nsReflowReason aType, nsIFrame * aFrame) { NS_ASSERTION(aName != nsnull, "Name shouldn't be null!"); if (mDumpFrameCounts && nsnull != mCounts) { ReflowCounter * counter = (ReflowCounter *)PL_HashTableLookup(mCounts, aName); if (counter == nsnull) { counter = new ReflowCounter(this); NS_ASSERTION(counter != nsnull, "null ptr"); char * name = nsCRT::strdup(aName); NS_ASSERTION(name != nsnull, "null ptr"); PL_HashTableAdd(mCounts, name, counter); } counter->Add(aType); } if ((mDumpFrameByFrameCounts || mPaintFrameByFrameCounts) && nsnull != mIndiFrameCounts && aFrame != nsnull) { char * key = new char[16]; sprintf(key, "%p", aFrame); IndiReflowCounter * counter = (IndiReflowCounter *)PL_HashTableLookup(mIndiFrameCounts, key); if (counter == nsnull) { counter = new IndiReflowCounter(this); NS_ASSERTION(counter != nsnull, "null ptr"); counter->mFrame = aFrame; counter->mName.AssignWithConversion(aName); PL_HashTableAdd(mIndiFrameCounts, key, counter); } // this eliminates extra counts from super classes if (counter != nsnull && counter->mName.EqualsWithConversion(aName)) { counter->mCount++; counter->mCounter.Add(aType, 1); } } } //------------------------------------------------------------------ void ReflowCountMgr::PaintCount(const char * aName, nsIRenderingContext* aRenderingContext, nsIPresContext* aPresContext, nsIFrame* aFrame, PRUint32 aColor) { if (mPaintFrameByFrameCounts && nsnull != mIndiFrameCounts && aFrame != nsnull) { char * key = new char[16]; sprintf(key, "%p", aFrame); IndiReflowCounter * counter = (IndiReflowCounter *)PL_HashTableLookup(mIndiFrameCounts, key); if (counter != nsnull && counter->mName.EqualsWithConversion(aName)) { aRenderingContext->PushState(); nsFont font("Times", NS_FONT_STYLE_NORMAL,NS_FONT_VARIANT_NORMAL, NS_FONT_WEIGHT_NORMAL,0,NSIntPointsToTwips(8)); nsCOMPtr fm; aPresContext->GetMetricsFor(font, getter_AddRefs(fm)); aRenderingContext->SetFont(fm); char buf[16]; sprintf(buf, "%d", counter->mCount); nscoord x = 0, y; nscoord width, height; aRenderingContext->GetWidth((char*)buf, width); fm->GetHeight(height); fm->GetMaxAscent(y); nsRect r; aFrame->GetRect(r); PRUint32 color; PRUint32 color2; if (aColor != 0) { color = aColor; color2 = NS_RGB(0,0,0); } else { PRUint8 rc,gc,bc = 0; if (counter->mCount < 5) { rc = 255; gc = 255; } else if ( counter->mCount < 11) { gc = 255; } else { rc = 255; } color = NS_RGB(rc,gc,bc); color2 = NS_RGB(rc/2,gc/2,bc/2); } nsRect rect(0,0, width+15, height+15); aRenderingContext->SetColor(NS_RGB(0,0,0)); aRenderingContext->FillRect(rect); aRenderingContext->SetColor(color2); aRenderingContext->DrawString(buf, strlen(buf), x+15,y+15); aRenderingContext->SetColor(color); aRenderingContext->DrawString(buf, strlen(buf), x,y); PRBool clipEmpty; aRenderingContext->PopState(clipEmpty); } } } //------------------------------------------------------------------ PRIntn ReflowCountMgr::RemoveItems(PLHashEntry *he, PRIntn i, void *arg) { char *str = (char *)he->key; ReflowCounter * counter = (ReflowCounter *)he->value; delete counter; delete [] str; return HT_ENUMERATE_REMOVE; } //------------------------------------------------------------------ PRIntn ReflowCountMgr::RemoveIndiItems(PLHashEntry *he, PRIntn i, void *arg) { char *str = (char *)he->key; IndiReflowCounter * counter = (IndiReflowCounter *)he->value; delete counter; delete [] str; return HT_ENUMERATE_REMOVE; } //------------------------------------------------------------------ void ReflowCountMgr::CleanUp() { if (nsnull != mCounts) { PL_HashTableEnumerateEntries(mCounts, RemoveItems, nsnull); PL_HashTableDestroy(mCounts); mCounts = nsnull; } if (nsnull != mIndiFrameCounts) { PL_HashTableEnumerateEntries(mIndiFrameCounts, RemoveIndiItems, nsnull); PL_HashTableDestroy(mIndiFrameCounts); mIndiFrameCounts = nsnull; } } //------------------------------------------------------------------ PRIntn ReflowCountMgr::DoSingleTotal(PLHashEntry *he, PRIntn i, void *arg) { char *str = (char *)he->key; ReflowCounter * counter = (ReflowCounter *)he->value; counter->DisplayTotals(str); return HT_ENUMERATE_NEXT; } //------------------------------------------------------------------ void ReflowCountMgr::DoGrandTotals() { if (nsnull != mCounts) { ReflowCounter * gTots = (ReflowCounter *)PL_HashTableLookup(mCounts, kGrandTotalsStr); if (gTots == nsnull) { gTots = new ReflowCounter(this); PL_HashTableAdd(mCounts, nsCRT::strdup(kGrandTotalsStr), gTots); } else { gTots->ClearTotals(); } static const char * title[] = {"Init", "Incrm", "Resze", "Style", "Dirty", "Total"}; printf("\t\t\t"); PRUint32 i; for (i=0;imHasBeenOutput = PR_TRUE; char * name = ToNewCString(counter->mName); for (PRInt32 i=0;imCount); for (PRInt32 inx=0;inx<5;inx++) { if (inx != 0) printf(","); printf("%d", counter->mCounter.GetTotalByType(nsReflowReason(inx))); } printf("]\n"); nsMemory::Free(name); } nsIFrame * child; aParentFrame->FirstChild(aPresContext, nsnull, &child); while (child) { RecurseIndiTotals(aPresContext, aHT, child, aLevel+1); child->GetNextSibling(&child); } } //------------------------------------------------------------------ PRIntn ReflowCountMgr::DoSingleIndi(PLHashEntry *he, PRIntn i, void *arg) { IndiReflowCounter * counter = (IndiReflowCounter *)he->value; if (counter && !counter->mHasBeenOutput) { char * name = ToNewCString(counter->mName); printf("%s - %p [%d][", name, counter->mFrame, counter->mCount); for (PRInt32 inx=0;inx<5;inx++) { if (inx != 0) printf(","); printf("%d", counter->mCounter.GetTotalByType(nsReflowReason(inx))); } printf("]\n"); nsMemory::Free(name); } return HT_ENUMERATE_NEXT; } //------------------------------------------------------------------ void ReflowCountMgr::DoIndiTotalsTree() { if (nsnull != mCounts) { printf("\n------------------------------------------------\n"); printf("-- Individual Frame Counts\n"); printf("------------------------------------------------\n"); if (mPresShell) { nsIFrame * rootFrame; mPresShell->GetRootFrame(&rootFrame); RecurseIndiTotals(mPresContext, mIndiFrameCounts, rootFrame, 0); printf("------------------------------------------------\n"); printf("-- Individual Counts of Frames not in Root Tree\n"); printf("------------------------------------------------\n"); PL_HashTableEnumerateEntries(mIndiFrameCounts, DoSingleIndi, this); } } } //------------------------------------------------------------------ PRIntn ReflowCountMgr::DoSingleHTMLTotal(PLHashEntry *he, PRIntn i, void *arg) { char *str = (char *)he->key; ReflowCounter * counter = (ReflowCounter *)he->value; counter->DisplayHTMLTotals(str); return HT_ENUMERATE_NEXT; } //------------------------------------------------------------------ void ReflowCountMgr::DoGrandHTMLTotals() { if (nsnull != mCounts) { ReflowCounter * gTots = (ReflowCounter *)PL_HashTableLookup(mCounts, kGrandTotalsStr); if (gTots == nsnull) { gTots = new ReflowCounter(this); PL_HashTableAdd(mCounts, nsCRT::strdup(kGrandTotalsStr), gTots); } else { gTots->ClearTotals(); } static const char * title[] = {"Class", "Init", "Incrm", "Resze", "Style", "Dirty", "Total"}; fprintf(mFD, ""); PRUint32 i; for (i=0;i
%s
", title[i]); } fprintf(mFD, "\n"); PL_HashTableEnumerateEntries(mCounts, DoSingleHTMLTotal, this); } } //------------------------------------ void ReflowCountMgr::DisplayTotals(const char * aStr) { #ifdef DEBUG_rods printf("%s\n", aStr?aStr:"No name"); #endif if (mDumpFrameCounts) { DoGrandTotals(); } if (mDumpFrameByFrameCounts) { DoIndiTotalsTree(); } } //------------------------------------ void ReflowCountMgr::DisplayHTMLTotals(const char * aStr) { #ifdef WIN32x // XXX NOT XP! char name[1024]; char * sptr = strrchr(aStr, '/'); if (sptr) { sptr++; strcpy(name, sptr); char * eptr = strrchr(name, '.'); if (eptr) { *eptr = 0; } strcat(name, "_stats.html"); } mFD = fopen(name, "w"); if (mFD) { fprintf(mFD, "Reflow Stats\n"); const char * title = aStr?aStr:"No name"; fprintf(mFD, "
%s
", title); DoGrandHTMLTotals(); fprintf(mFD, "
\n"); fprintf(mFD, "\n"); fclose(mFD); mFD = nsnull; } #endif // not XP! } //------------------------------------------------------------------ PRIntn ReflowCountMgr::DoClearTotals(PLHashEntry *he, PRIntn i, void *arg) { ReflowCounter * counter = (ReflowCounter *)he->value; counter->ClearTotals(); return HT_ENUMERATE_NEXT; } //------------------------------------------------------------------ void ReflowCountMgr::ClearTotals() { PL_HashTableEnumerateEntries(mCounts, DoClearTotals, this); } //------------------------------------------------------------------ void ReflowCountMgr::ClearGrandTotals() { if (nsnull != mCounts) { ReflowCounter * gTots = (ReflowCounter *)PL_HashTableLookup(mCounts, kGrandTotalsStr); if (gTots == nsnull) { gTots = new ReflowCounter(this); PL_HashTableAdd(mCounts, nsCRT::strdup(kGrandTotalsStr), gTots); } else { gTots->ClearTotals(); gTots->SetTotalsCache(); } } } //------------------------------------------------------------------ PRIntn ReflowCountMgr::DoDisplayDiffTotals(PLHashEntry *he, PRIntn i, void *arg) { PRBool cycledOnce = (arg != 0); char *str = (char *)he->key; ReflowCounter * counter = (ReflowCounter *)he->value; if (cycledOnce) { counter->CalcDiffInTotals(); counter->DisplayDiffTotals(str); } counter->SetTotalsCache(); return HT_ENUMERATE_NEXT; } //------------------------------------------------------------------ void ReflowCountMgr::DisplayDiffsInTotals(const char * aStr) { if (mCycledOnce) { printf("Differences\n"); for (PRInt32 i=0;i<78;i++) { printf("-"); } printf("\n"); ClearGrandTotals(); } PL_HashTableEnumerateEntries(mCounts, DoDisplayDiffTotals, (void *)mCycledOnce); mCycledOnce = PR_TRUE; } #endif // MOZ_REFLOW_PERF // make a color string like #RRGGBB void ColorToString(nscolor aColor, nsAutoString &aString) { nsAutoString tmp; aString.SetLength(0); // # aString.Append(NS_LITERAL_STRING("#")); // RR tmp.AppendInt((PRInt32)NS_GET_R(aColor), 16); if (tmp.Length() < 2) tmp.AppendInt(0,16); aString.Append(tmp); tmp.SetLength(0); // GG tmp.AppendInt((PRInt32)NS_GET_G(aColor), 16); if (tmp.Length() < 2) tmp.AppendInt(0,16); aString.Append(tmp); tmp.SetLength(0); // BB tmp.AppendInt((PRInt32)NS_GET_B(aColor), 16); if (tmp.Length() < 2) tmp.AppendInt(0,16); aString.Append(tmp); }