gecko-dev/layout/base/nsPresShell.cpp

8104 строки
248 KiB
C++
Исходник Обычный вид История

1998-04-14 00:24:54 +04:00
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
* vim: set ts=2 sw=2 et tw=78:
* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
* The contents of this file are subject to the Mozilla 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/MPL/
*
* 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.
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*
* The Original Code is mozilla.org code.
*
* The Initial Developer of the Original Code is
* Netscape Communications Corporation.
* Portions created by the Initial Developer are Copyright (C) 1998
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Steve Clark <buster@netscape.com>
* H<EFBFBD>kan Waara <hwaara@chello.se>
* Dan Rosen <dr@netscape.com>
* Daniel Glazman <glazman@netscape.com>
* Mats Palmgren <mats.palmgren@bredband.net>
*
* Alternatively, the contents of this file may be used under the terms of
* either of the GNU General Public License Version 2 or later (the "GPL"),
* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK *****
*
* 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
*/
/* a presentation of a document, part 2 */
#define PL_ARENA_CONST_ALIGN_MASK 3
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#include "nsIPresShell.h"
#include "nsPresContext.h"
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#include "nsIContent.h"
#include "nsIDocument.h"
#include "nsIDOMXULDocument.h"
#include "nsStubDocumentObserver.h"
#include "nsStyleSet.h"
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#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"
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#include "nsFrame.h"
#include "nsHTMLReflowCommand.h"
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#include "nsIViewManager.h"
#include "nsCRT.h"
#include "prlog.h"
#include "prmem.h"
#include "prprf.h"
#include "prinrval.h"
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#include "nsVoidArray.h"
#include "nsCOMArray.h"
#include "nsHashtable.h"
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#include "nsIViewObserver.h"
#include "nsContainerFrame.h"
#include "nsIDeviceContext.h"
#include "nsEventStateManager.h"
#include "nsDOMEvent.h"
#include "nsGUIEvent.h"
#include "nsHTMLParts.h"
#include "nsContentUtils.h"
#include "nsISelection.h"
#include "nsISelectionController.h"
#include "nsReflowPath.h"
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#include "nsLayoutCID.h"
#include "nsLayoutAtoms.h"
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#include "nsIDOMRange.h"
#include "nsIDOMDocument.h"
#include "nsIDOMNode.h"
#include "nsIDOM3Node.h"
#include "nsIDOMNodeList.h"
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#include "nsIDOMElement.h"
#include "nsHTMLAtoms.h"
#include "nsCSSPseudoElements.h"
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#include "nsCOMPtr.h"
#include "nsAutoPtr.h"
#include "nsReadableUtils.h"
#include "nsUnicharUtils.h"
#include "nsWeakReference.h"
#include "nsIPageSequenceFrame.h"
#include "nsICaret.h"
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#include "nsIDOMHTMLDocument.h"
#include "nsIXPointer.h"
#include "nsIDOMXMLDocument.h"
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#include "nsIScrollableView.h"
#include "nsIParser.h"
#include "nsParserCIID.h"
#include "nsFrameSelection.h"
#include "nsIDOMNSHTMLInputElement.h" //optimization for ::DoXXX commands
#include "nsIDOMNSHTMLTextAreaElement.h"
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#include "nsViewsCID.h"
#include "nsFrameManager.h"
#include "nsXPCOM.h"
#include "nsISupportsPrimitives.h"
#include "nsILayoutHistoryState.h"
Fix for bug #15360: Drag Selecting, Clicking, then Clicking leaves caret cruft. r=troy@netscape.com,kipp@netscape.com,evaughan@netscape.com,beard@netscape.com layout/html/base/src/nsGfxScrollFrame.cpp - Renamed all occurrences of ScrollPositionChanged() to to ScrollPositionDidChange() to match changes made to nsIScrollPositionListener. - Added ScrollPositionWillChange() stub method. layout/html/base/src/nsPresShell.cpp - Added PresShellViewEventListener class that implements the nsIScrollPositionListener and nsICompositeListener view interfaces. This allows us to turn caret rendering on and off when scrolling and repainting to prevent leaving caret cruft on the screen. - PresShellViewEventListener is created in InitialReflow(), and released in ~PresShell(). view/public/Makefile.in view/public/makefile.win view/public/MANIFEST - Added nsICompositeListener to list of files to be exported. view/public/nsICompositeListener.h - New file. Implementers of this interface can register themselves with the view manager to receive notification before and after a view is composited/refreshed. view/public/nsIScrollPositionListener.h - Added a ScrollPositionWillChange() method. - Changed ScrollPositionChanged() to ScrollPositionDidChange(). view/public/nsIViewManager.h - Added AddCompositeListener() and RemoveCompositeListener methods. view/src/nsScrollingView.cpp view/src/nsScrollingView.h - Added NotifyScrollPositionWillChange() and NotifyScrollPositionDidChange() methods. - Modified HandleScrollEvent() to call NotifyScrollPositionWill/DidChange() methods. Added temporary offsetX and offsetY variables to allow us to calculate new offsets without changing mOffsetX and mOffsetY before notifications are sent out. view/src/nsScrollPortView.cpp - Changed ScrollPositionChanged() to ScrollPositionDidChange(). - Modified ScrollTo() to call the listener's ScrollPositionWillChange() method. view/src/nsViewManager.cpp view/src/nsViewManager.h - Added AddCompositeListener() and RemoveCompositeListener() methods. - Added support for CompositeListener notifications in the Refresh() methods for regions and rects. - Fix for bug #15901: [DOGFOOD] Selected text does not clear when you type Modified UpdateView() so that rects with zero width and height are no longer added to our damage region. r=beard@netscape.com
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#include "nsIScrollPositionListener.h"
#include "nsICompositeListener.h"
#include "nsILineIterator.h" // for ScrollFrameIntoView
#include "nsTimer.h"
#include "nsWeakPtr.h"
#include "plarena.h"
#include "pldhash.h"
#include "nsIObserverService.h"
#include "nsIObserver.h"
#include "nsIDocShell.h" // for reflow observation
#include "nsIBaseWindow.h"
#include "nsLayoutErrors.h"
#include "nsLayoutUtils.h"
#include "nsCSSRendering.h"
#ifdef NS_DEBUG
#include "nsIFrameDebug.h"
#endif
// for |#ifdef DEBUG| code
#include "nsSpaceManager.h"
#include "prenv.h"
#include "nsIAttribute.h"
#include "nsIGlobalHistory2.h"
#include "nsDisplayList.h"
#include "nsRegion.h"
#ifdef MOZ_REFLOW_PERF_DSP
#include "nsIRenderingContext.h"
#include "nsIFontMetrics.h"
#endif
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#include "nsIReflowCallback.h"
#include "nsPIDOMWindow.h"
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#include "nsIFocusController.h"
#include "nsIPluginInstance.h"
#include "nsIObjectFrame.h"
#include "nsIObjectLoadingContent.h"
#include "nsNetUtil.h"
#include "nsEventDispatcher.h"
#include "nsThreadUtils.h"
#include "nsStyleSheetService.h"
// Drag & Drop, Clipboard
#include "nsWidgetsCID.h"
#include "nsIClipboard.h"
#include "nsIClipboardHelper.h"
#include "nsIDocShellTreeItem.h"
#include "nsIURI.h"
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#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 "nsITimer.h"
#ifdef ACCESSIBILITY
#include "nsIAccessibilityService.h"
#include "nsIAccessible.h"
#include "nsIAccessibleEvent.h"
#endif
// For style data reconstruction
#include "nsStyleChangeList.h"
#include "nsCSSFrameConstructor.h"
#include "nsIBindingManager.h"
#ifdef MOZ_XUL
#include "nsIMenuFrame.h"
#include "nsITreeBoxObject.h"
#endif
#include "nsPlaceholderFrame.h"
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// Content viewer interfaces
#include "nsIContentViewer.h"
#include "nsContentCID.h"
static NS_DEFINE_CID(kCSSStyleSheetCID, NS_CSS_STYLESHEET_CID);
static NS_DEFINE_IID(kRangeCID, NS_RANGE_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);
// Class ID's
static NS_DEFINE_CID(kFrameSelectionCID, NS_FRAMESELECTION_CID);
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#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 {
const char* name;
PRUint32 bit;
};
static const 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");
const VerifyReflowFlags* flag = gFlags;
const 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, nsPresContext* aPresContext, nsIFrame * aFrame, PRUint32 aColor);
FILE * GetOutFile() { return mFD; }
PLHashTable * GetIndiFrameHT() { return mIndiFrameCounts; }
void SetPresContext(nsPresContext * 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
nsPresContext * 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;
// Largest chunk size we recycle
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static const size_t gMaxRecycledSize = 400;
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#define MARK_INCREMENT 50
#define BLOCK_INCREMENT 4044 /* a bit under 4096, for malloc overhead */
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/**A block of memory that the stack will
* chop up and hand out
*/
struct StackBlock {
// a block of memory. Note that this must be first so that it will
// be aligned.
char mBlock[BLOCK_INCREMENT];
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// 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() { }
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};
/* 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 mark list
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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);
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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;
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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
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mCurBlock = mMarks[mStackTop].mBlock;
mPos = mMarks[mStackTop].mPos;
return NS_OK;
}
// Uncomment this to disable the frame arena.
//#define DEBUG_TRACEMALLOC_FRAMEARENA 1
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// 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
NS_HIDDEN_(void*) AllocateFrame(size_t aSize);
NS_HIDDEN_(void) FreeFrame(size_t aSize, void* aPtr);
private:
#ifdef DEBUG
// Number of frames in the pool
PRUint32 mFrameCount;
#endif
#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)
#ifdef DEBUG
: mFrameCount(0)
#endif
{
#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()
{
NS_ASSERTION(mFrameCount == 0, "Some frame destructors were not called");
#if !defined(DEBUG_TRACEMALLOC_FRAMEARENA)
// Free the arena in the pool and finish using it
PL_FinishArenaPool(&mPool);
#endif
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}
void*
FrameArena::AllocateFrame(size_t aSize)
{
void* result = nsnull;
#if defined(DEBUG_TRACEMALLOC_FRAMEARENA)
result = PR_Malloc(aSize);
#else
// 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);
}
#endif
#ifdef DEBUG
if (result != nsnull)
++mFrameCount;
#endif
return result;
}
void
FrameArena::FreeFrame(size_t aSize, void* aPtr)
{
#ifdef DEBUG
--mFrameCount;
// 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;
}
#ifdef DEBUG_dbaron
else {
fprintf(stderr,
"WARNING: FrameArena::FreeFrame leaking chunk of %d bytes.\n",
aSize);
}
#endif
#endif
}
Fix for bug #15360: Drag Selecting, Clicking, then Clicking leaves caret cruft. r=troy@netscape.com,kipp@netscape.com,evaughan@netscape.com,beard@netscape.com layout/html/base/src/nsGfxScrollFrame.cpp - Renamed all occurrences of ScrollPositionChanged() to to ScrollPositionDidChange() to match changes made to nsIScrollPositionListener. - Added ScrollPositionWillChange() stub method. layout/html/base/src/nsPresShell.cpp - Added PresShellViewEventListener class that implements the nsIScrollPositionListener and nsICompositeListener view interfaces. This allows us to turn caret rendering on and off when scrolling and repainting to prevent leaving caret cruft on the screen. - PresShellViewEventListener is created in InitialReflow(), and released in ~PresShell(). view/public/Makefile.in view/public/makefile.win view/public/MANIFEST - Added nsICompositeListener to list of files to be exported. view/public/nsICompositeListener.h - New file. Implementers of this interface can register themselves with the view manager to receive notification before and after a view is composited/refreshed. view/public/nsIScrollPositionListener.h - Added a ScrollPositionWillChange() method. - Changed ScrollPositionChanged() to ScrollPositionDidChange(). view/public/nsIViewManager.h - Added AddCompositeListener() and RemoveCompositeListener methods. view/src/nsScrollingView.cpp view/src/nsScrollingView.h - Added NotifyScrollPositionWillChange() and NotifyScrollPositionDidChange() methods. - Modified HandleScrollEvent() to call NotifyScrollPositionWill/DidChange() methods. Added temporary offsetX and offsetY variables to allow us to calculate new offsets without changing mOffsetX and mOffsetY before notifications are sent out. view/src/nsScrollPortView.cpp - Changed ScrollPositionChanged() to ScrollPositionDidChange(). - Modified ScrollTo() to call the listener's ScrollPositionWillChange() method. view/src/nsViewManager.cpp view/src/nsViewManager.h - Added AddCompositeListener() and RemoveCompositeListener() methods. - Added support for CompositeListener notifications in the Refresh() methods for regions and rects. - Fix for bug #15901: [DOGFOOD] Selected text does not clear when you type Modified UpdateView() so that rects with zero width and height are no longer added to our damage region. r=beard@netscape.com
1999-10-15 08:29:30 +04:00
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,
Fix for bug #15360: Drag Selecting, Clicking, then Clicking leaves caret cruft. r=troy@netscape.com,kipp@netscape.com,evaughan@netscape.com,beard@netscape.com layout/html/base/src/nsGfxScrollFrame.cpp - Renamed all occurrences of ScrollPositionChanged() to to ScrollPositionDidChange() to match changes made to nsIScrollPositionListener. - Added ScrollPositionWillChange() stub method. layout/html/base/src/nsPresShell.cpp - Added PresShellViewEventListener class that implements the nsIScrollPositionListener and nsICompositeListener view interfaces. This allows us to turn caret rendering on and off when scrolling and repainting to prevent leaving caret cruft on the screen. - PresShellViewEventListener is created in InitialReflow(), and released in ~PresShell(). view/public/Makefile.in view/public/makefile.win view/public/MANIFEST - Added nsICompositeListener to list of files to be exported. view/public/nsICompositeListener.h - New file. Implementers of this interface can register themselves with the view manager to receive notification before and after a view is composited/refreshed. view/public/nsIScrollPositionListener.h - Added a ScrollPositionWillChange() method. - Changed ScrollPositionChanged() to ScrollPositionDidChange(). view/public/nsIViewManager.h - Added AddCompositeListener() and RemoveCompositeListener methods. view/src/nsScrollingView.cpp view/src/nsScrollingView.h - Added NotifyScrollPositionWillChange() and NotifyScrollPositionDidChange() methods. - Modified HandleScrollEvent() to call NotifyScrollPositionWill/DidChange() methods. Added temporary offsetX and offsetY variables to allow us to calculate new offsets without changing mOffsetX and mOffsetY before notifications are sent out. view/src/nsScrollPortView.cpp - Changed ScrollPositionChanged() to ScrollPositionDidChange(). - Modified ScrollTo() to call the listener's ScrollPositionWillChange() method. view/src/nsViewManager.cpp view/src/nsViewManager.h - Added AddCompositeListener() and RemoveCompositeListener() methods. - Added support for CompositeListener notifications in the Refresh() methods for regions and rects. - Fix for bug #15901: [DOGFOOD] Selected text does not clear when you type Modified UpdateView() so that rects with zero width and height are no longer added to our damage region. r=beard@netscape.com
1999-10-15 08:29:30 +04:00
nsIView *aView,
nsIRenderingContext *aContext,
nsIRegion *aRegion,
PRUint32 aUpdateFlags);
NS_IMETHOD DidRefreshRegion(nsIViewManager *aViewManager,
Fix for bug #15360: Drag Selecting, Clicking, then Clicking leaves caret cruft. r=troy@netscape.com,kipp@netscape.com,evaughan@netscape.com,beard@netscape.com layout/html/base/src/nsGfxScrollFrame.cpp - Renamed all occurrences of ScrollPositionChanged() to to ScrollPositionDidChange() to match changes made to nsIScrollPositionListener. - Added ScrollPositionWillChange() stub method. layout/html/base/src/nsPresShell.cpp - Added PresShellViewEventListener class that implements the nsIScrollPositionListener and nsICompositeListener view interfaces. This allows us to turn caret rendering on and off when scrolling and repainting to prevent leaving caret cruft on the screen. - PresShellViewEventListener is created in InitialReflow(), and released in ~PresShell(). view/public/Makefile.in view/public/makefile.win view/public/MANIFEST - Added nsICompositeListener to list of files to be exported. view/public/nsICompositeListener.h - New file. Implementers of this interface can register themselves with the view manager to receive notification before and after a view is composited/refreshed. view/public/nsIScrollPositionListener.h - Added a ScrollPositionWillChange() method. - Changed ScrollPositionChanged() to ScrollPositionDidChange(). view/public/nsIViewManager.h - Added AddCompositeListener() and RemoveCompositeListener methods. view/src/nsScrollingView.cpp view/src/nsScrollingView.h - Added NotifyScrollPositionWillChange() and NotifyScrollPositionDidChange() methods. - Modified HandleScrollEvent() to call NotifyScrollPositionWill/DidChange() methods. Added temporary offsetX and offsetY variables to allow us to calculate new offsets without changing mOffsetX and mOffsetY before notifications are sent out. view/src/nsScrollPortView.cpp - Changed ScrollPositionChanged() to ScrollPositionDidChange(). - Modified ScrollTo() to call the listener's ScrollPositionWillChange() method. view/src/nsViewManager.cpp view/src/nsViewManager.h - Added AddCompositeListener() and RemoveCompositeListener() methods. - Added support for CompositeListener notifications in the Refresh() methods for regions and rects. - Fix for bug #15901: [DOGFOOD] Selected text does not clear when you type Modified UpdateView() so that rects with zero width and height are no longer added to our damage region. r=beard@netscape.com
1999-10-15 08:29:30 +04:00
nsIView *aView,
nsIRenderingContext *aContext,
nsIRegion *aRegion,
PRUint32 aUpdateFlags);
NS_IMETHOD WillRefreshRect(nsIViewManager *aViewManager,
Fix for bug #15360: Drag Selecting, Clicking, then Clicking leaves caret cruft. r=troy@netscape.com,kipp@netscape.com,evaughan@netscape.com,beard@netscape.com layout/html/base/src/nsGfxScrollFrame.cpp - Renamed all occurrences of ScrollPositionChanged() to to ScrollPositionDidChange() to match changes made to nsIScrollPositionListener. - Added ScrollPositionWillChange() stub method. layout/html/base/src/nsPresShell.cpp - Added PresShellViewEventListener class that implements the nsIScrollPositionListener and nsICompositeListener view interfaces. This allows us to turn caret rendering on and off when scrolling and repainting to prevent leaving caret cruft on the screen. - PresShellViewEventListener is created in InitialReflow(), and released in ~PresShell(). view/public/Makefile.in view/public/makefile.win view/public/MANIFEST - Added nsICompositeListener to list of files to be exported. view/public/nsICompositeListener.h - New file. Implementers of this interface can register themselves with the view manager to receive notification before and after a view is composited/refreshed. view/public/nsIScrollPositionListener.h - Added a ScrollPositionWillChange() method. - Changed ScrollPositionChanged() to ScrollPositionDidChange(). view/public/nsIViewManager.h - Added AddCompositeListener() and RemoveCompositeListener methods. view/src/nsScrollingView.cpp view/src/nsScrollingView.h - Added NotifyScrollPositionWillChange() and NotifyScrollPositionDidChange() methods. - Modified HandleScrollEvent() to call NotifyScrollPositionWill/DidChange() methods. Added temporary offsetX and offsetY variables to allow us to calculate new offsets without changing mOffsetX and mOffsetY before notifications are sent out. view/src/nsScrollPortView.cpp - Changed ScrollPositionChanged() to ScrollPositionDidChange(). - Modified ScrollTo() to call the listener's ScrollPositionWillChange() method. view/src/nsViewManager.cpp view/src/nsViewManager.h - Added AddCompositeListener() and RemoveCompositeListener() methods. - Added support for CompositeListener notifications in the Refresh() methods for regions and rects. - Fix for bug #15901: [DOGFOOD] Selected text does not clear when you type Modified UpdateView() so that rects with zero width and height are no longer added to our damage region. r=beard@netscape.com
1999-10-15 08:29:30 +04:00
nsIView *aView,
nsIRenderingContext *aContext,
const nsRect *aRect,
PRUint32 aUpdateFlags);
NS_IMETHOD DidRefreshRect(nsIViewManager *aViewManager,
Fix for bug #15360: Drag Selecting, Clicking, then Clicking leaves caret cruft. r=troy@netscape.com,kipp@netscape.com,evaughan@netscape.com,beard@netscape.com layout/html/base/src/nsGfxScrollFrame.cpp - Renamed all occurrences of ScrollPositionChanged() to to ScrollPositionDidChange() to match changes made to nsIScrollPositionListener. - Added ScrollPositionWillChange() stub method. layout/html/base/src/nsPresShell.cpp - Added PresShellViewEventListener class that implements the nsIScrollPositionListener and nsICompositeListener view interfaces. This allows us to turn caret rendering on and off when scrolling and repainting to prevent leaving caret cruft on the screen. - PresShellViewEventListener is created in InitialReflow(), and released in ~PresShell(). view/public/Makefile.in view/public/makefile.win view/public/MANIFEST - Added nsICompositeListener to list of files to be exported. view/public/nsICompositeListener.h - New file. Implementers of this interface can register themselves with the view manager to receive notification before and after a view is composited/refreshed. view/public/nsIScrollPositionListener.h - Added a ScrollPositionWillChange() method. - Changed ScrollPositionChanged() to ScrollPositionDidChange(). view/public/nsIViewManager.h - Added AddCompositeListener() and RemoveCompositeListener methods. view/src/nsScrollingView.cpp view/src/nsScrollingView.h - Added NotifyScrollPositionWillChange() and NotifyScrollPositionDidChange() methods. - Modified HandleScrollEvent() to call NotifyScrollPositionWill/DidChange() methods. Added temporary offsetX and offsetY variables to allow us to calculate new offsets without changing mOffsetX and mOffsetY before notifications are sent out. view/src/nsScrollPortView.cpp - Changed ScrollPositionChanged() to ScrollPositionDidChange(). - Modified ScrollTo() to call the listener's ScrollPositionWillChange() method. view/src/nsViewManager.cpp view/src/nsViewManager.h - Added AddCompositeListener() and RemoveCompositeListener() methods. - Added support for CompositeListener notifications in the Refresh() methods for regions and rects. - Fix for bug #15901: [DOGFOOD] Selected text does not clear when you type Modified UpdateView() so that rects with zero width and height are no longer added to our damage region. r=beard@netscape.com
1999-10-15 08:29:30 +04:00
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;
};
2000-07-14 03:00:59 +04:00
struct nsCallbackEventRequest
{
nsIReflowCallback* callback;
nsCallbackEventRequest* next;
};
2000-09-12 04:35:11 +04:00
// ----------------------------------------------------------------------------
/**
* 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.
*/
enum AddCommandResult {
eEnqueued, // the command was successfully added
eTryLater, // the command could not be added; try again
eCancel, // the command was not added; delete it
eOOM // Out of memory.
};
AddCommandResult
AddCommand(nsPresContext *aPresContext,
nsHTMLReflowCommand *aCommand);
/**
* Dispatch the incremental reflow.
*/
void
Dispatch(nsPresContext *aPresContext,
nsHTMLReflowMetrics &aDesiredSize,
const nsSize &aMaxSize,
nsIRenderingContext &aRendContext);
#ifdef NS_DEBUG
/**
* Dump the incremental reflow state.
*/
void
Dump(nsPresContext *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(nsPresContext *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;
nsIFrame* root = aPresContext->PresShell()->FrameManager()->GetRootFrame();
first->WillReflow(aPresContext);
nsContainerFrame::PositionFrameView(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
2003-06-30 14:46:59 +04:00
size = first->GetSize();
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");
2003-06-30 14:46:59 +04:00
first->SetSize(nsSize(aDesiredSize.width, aDesiredSize.height));
nsContainerFrame::SyncFrameViewAfterReflow(aPresContext, first, first->GetView(),
&aDesiredSize.mOverflowArea);
first->DidReflow(aPresContext, nsnull, NS_FRAME_REFLOW_FINISHED);
}
}
IncrementalReflow::AddCommandResult
IncrementalReflow::AddCommand(nsPresContext *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;
do {
path.AppendElement(frame);
2003-06-30 14:46:59 +04:00
} while (!(frame->GetStateBits() & NS_FRAME_REFLOW_ROOT) &&
(frame = frame->GetParent()) != 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);
// Prevent an incremental reflow from being posted inside a reflow
// root if the reflow root's container has not yet been reflowed.
// This can cause problems like bug 228156.
if (rootFrame->GetParent() &&
(rootFrame->GetParent()->GetStateBits() & NS_FRAME_FIRST_REFLOW)) {
return eCancel;
}
nsReflowPath *root = nsnull;
PRInt32 i;
for (i = mRoots.Count() - 1; i >= 0; --i) {
nsReflowPath *r = NS_STATIC_CAST(nsReflowPath *, mRoots[i]);
if (r->mFrame == rootFrame) {
root = r;
break;
}
}
if (! root) {
root = new nsReflowPath(rootFrame);
if (! root)
return eOOM;
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 *f = NS_STATIC_CAST(nsIFrame *, path[i]);
target = target->EnsureSubtreeFor(f);
// Out of memory. Ugh.
if (! target)
return eOOM;
}
// 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",
(void*)aCommand, (void*)target->mReflowCommand);
#endif
return eTryLater;
}
target->mReflowCommand = aCommand;
return eEnqueued;
}
#ifdef NS_DEBUG
void
IncrementalReflow::Dump(nsPresContext *aPresContext) const
{
for (PRInt32 i = mRoots.Count() - 1; i >= 0; --i)
NS_STATIC_CAST(nsReflowPath *, mRoots[i])->Dump(aPresContext, stdout, 0);
}
#endif
// ----------------------------------------------------------------------------
struct ReflowCommandEntry : public PLDHashEntryHdr
{
nsHTMLReflowCommand* mCommand;
};
PR_STATIC_CALLBACK(const void *)
ReflowCommandHashGetKey(PLDHashTable *table, PLDHashEntryHdr *entry)
{
ReflowCommandEntry *e = NS_STATIC_CAST(ReflowCommandEntry *, entry);
return e->mCommand;
}
PR_STATIC_CALLBACK(PLDHashNumber)
ReflowCommandHashHashKey(PLDHashTable *table, const void *key)
{
const nsHTMLReflowCommand* command =
NS_STATIC_CAST(const nsHTMLReflowCommand*, key);
// The target is going to be reasonably unique, if we shift out the
// always-zero low-order bits, the type comes from an enum and we just don't
// have that many types, and the child list name is either null or has the
// same high-order bits as all the other child list names.
return
(NS_PTR_TO_INT32(command->GetTarget()) >> 2) ^
(command->Type() << 17) ^
(NS_PTR_TO_INT32(command->GetChildListName()) << 20);
}
PR_STATIC_CALLBACK(PRBool)
ReflowCommandHashMatchEntry(PLDHashTable *table, const PLDHashEntryHdr *entry,
const void *key)
{
const ReflowCommandEntry *e =
NS_STATIC_CAST(const ReflowCommandEntry *, entry);
const nsHTMLReflowCommand *command = e->mCommand;
const nsHTMLReflowCommand *command2 =
NS_STATIC_CAST(const nsHTMLReflowCommand *, key);
return
command->GetTarget() == command2->GetTarget() &&
command->Type() == command2->Type() &&
command->GetChildListName() == command2->GetChildListName();
}
// ----------------------------------------------------------------------------
class nsPresShellEventCB;
1998-08-28 06:54:06 +04:00
class PresShell : public nsIPresShell, public nsIViewObserver,
public nsStubDocumentObserver,
public nsISelectionController, public nsIObserver,
public nsSupportsWeakReference
1998-08-28 06:54:06 +04:00
{
1998-04-14 00:24:54 +04:00
public:
PresShell();
1999-02-26 23:02:06 +03:00
NS_DECL_AND_IMPL_ZEROING_OPERATOR_NEW
1998-04-14 00:24:54 +04:00
// nsISupports
NS_DECL_ISUPPORTS
// nsIPresShell
NS_IMETHOD Init(nsIDocument* aDocument,
nsPresContext* aPresContext,
nsIViewManager* aViewManager,
nsStyleSet* aStyleSet,
nsCompatibility aCompatMode);
NS_IMETHOD Destroy();
virtual NS_HIDDEN_(void*) AllocateFrame(size_t aSize);
virtual NS_HIDDEN_(void) FreeFrame(size_t aSize, void* aFreeChunk);
2000-03-31 11:02:06 +04:00
// Dynamic stack memory allocation
NS_IMETHOD PushStackMemory();
NS_IMETHOD PopStackMemory();
NS_IMETHOD AllocateStackMemory(size_t aSize, void** aResult);
NS_IMETHOD GetActiveAlternateStyleSheet(nsString& aSheetTitle);
NS_IMETHOD SelectAlternateStyleSheet(const nsString& aSheetTitle);
NS_IMETHOD ListAlternateStyleSheets(nsStringArray& aTitleList);
NS_IMETHOD SetPreferenceStyleRules(PRBool aForceReflow);
NS_IMETHOD GetSelection(SelectionType aType, nsISelection** aSelection);
virtual nsISelection* GetCurrentSelection(SelectionType aType);
NS_IMETHOD SetDisplaySelection(PRInt16 aToggle);
NS_IMETHOD GetDisplaySelection(PRInt16 *aToggle);
Partial fix for bug 141900 (Text entry fields in forms excruciatingly slow.) mozilla/content/base/public/nsISelectionController.idl mozilla/content/base/src/nsSelection.cpp mozilla/editor/composer/src/nsEditorShell.cpp mozilla/editor/idl/nsIPlaintextEditor.idl mozilla/editor/libeditor/base/nsEditor.cpp mozilla/editor/libeditor/base/nsEditor.h mozilla/editor/libeditor/html/nsHTMLDataTransfer.cpp mozilla/editor/libeditor/html/nsHTMLEditor.cpp mozilla/editor/libeditor/text/nsEditorEventListeners.cpp mozilla/editor/libeditor/text/nsPlaintextDataTransfer.cpp mozilla/editor/libeditor/text/nsPlaintextEditor.cpp mozilla/editor/txtsvc/src/nsTextServicesDocument.cpp mozilla/editor/ui/dialogs/content/EdTableProps.js mozilla/embedding/components/find/src/nsWebBrowserFind.cpp mozilla/extensions/xmlterm/base/mozXMLTermSession.cpp mozilla/layout/base/public/nsIFrameSelection.h mozilla/layout/html/base/src/nsPresShell.cpp mozilla/layout/html/forms/src/nsGfxTextControlFrame2.cpp mozilla/mailnews/compose/src/nsMsgCompose.cpp mozilla/xpfe/browser/resources/content/viewPartialSource.js - Added aIsSynchronous arg to the ScrollSelectionIntoView() method of nsISelectionController and nsIFrameSelection. Updated all callers to pass new arg. - Modified selection to post a plevent to call which does the call to ScrollIntoView() in the async ScrollIntoView() case. - Edits in text widgets now use asynchronous reflow, paint, and scroll processing full time. - Removed redundant ScrollSelectionIntoView() calls in the editor event listeners. - Editor IME code now forced to flush reflows and paints before getting caret coordinates. r=jfrancis@netscape.com sr=waterson@netscape.com
2002-06-14 00:35:12 +04:00
NS_IMETHOD ScrollSelectionIntoView(SelectionType aType, SelectionRegion aRegion, PRBool aIsSynchronous);
NS_IMETHOD RepaintSelection(SelectionType aType);
NS_IMETHOD BeginObservingDocument();
NS_IMETHOD EndObservingDocument();
NS_IMETHOD GetDidInitialReflow(PRBool *aDidInitialReflow);
NS_IMETHOD InitialReflow(nscoord aWidth, nscoord aHeight);
1998-08-28 06:54:06 +04:00
NS_IMETHOD ResizeReflow(nscoord aWidth, nscoord aHeight);
NS_IMETHOD StyleChangeReflow();
NS_IMETHOD GetPageSequenceFrame(nsIPageSequenceFrame** aResult) const;
virtual NS_HIDDEN_(nsIFrame*) GetPrimaryFrameFor(nsIContent* aContent) const;
NS_IMETHOD GetLayoutObjectFor(nsIContent* aContent,
nsISupports** aResult) const;
NS_IMETHOD GetPlaceholderFrameFor(nsIFrame* aFrame,
nsIFrame** aPlaceholderFrame) const;
NS_IMETHOD AppendReflowCommand(nsIFrame* aTargetFrame,
nsReflowType aReflowType,
nsIAtom* aChildListName);
NS_IMETHOD CancelReflowCommand(nsIFrame* aTargetFrame,
nsReflowType* aCmdType);
void CancelReflowCommandInternal(nsIFrame* aTargetFrame,
nsReflowType* aCmdType);
NS_IMETHOD CancelAllReflowCommands();
NS_IMETHOD IsSafeToFlush(PRBool& aIsSafeToFlush);
NS_IMETHOD FlushPendingNotifications(mozFlushType aType);
/**
* Recreates the frames for a node
*/
NS_IMETHOD RecreateFramesFor(nsIContent* aContent);
/**
* 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);
2000-07-14 03:00:59 +04:00
/**
* Post a callback that should be handled after reflow has finished.
*/
NS_IMETHOD PostReflowCallback(nsIReflowCallback* aCallback);
NS_IMETHOD CancelReflowCallback(nsIReflowCallback* aCallback);
2000-07-14 03:00:59 +04:00
/**
* 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 GoToAnchor(const nsAString& aAnchorName, PRBool aScroll);
1998-08-28 06:54:06 +04:00
NS_IMETHOD ScrollFrameIntoView(nsIFrame *aFrame,
PRIntn aVPercent,
PRIntn aHPercent) const;
NS_IMETHOD SetIgnoreFrameDestruction(PRBool aIgnore);
NS_IMETHOD NotifyDestroyingFrame(nsIFrame* aFrame);
1999-08-04 08:02:40 +04:00
NS_IMETHOD DoCopy();
NS_IMETHOD GetSelectionForCopy(nsISelection** outSelection);
NS_IMETHOD GetLinkLocation(nsIDOMNode* aNode, nsAString& aLocationString);
NS_IMETHOD DoGetContents(const nsACString& aMimeType, PRUint32 aFlags, PRBool aSelectionOnly, nsAString& outValue);
NS_IMETHOD CaptureHistoryState(nsILayoutHistoryState** aLayoutHistoryState, PRBool aLeavingPage);
NS_IMETHOD SetAnonymousContentFor(nsIContent* aContent, nsISupportsArray* aAnonymousElements);
NS_IMETHOD GetAnonymousContentFor(nsIContent* aContent, nsISupportsArray** aAnonymousElements);
NS_IMETHOD ReleaseAnonymousContent();
NS_IMETHOD IsPaintingSuppressed(PRBool* aResult);
2001-05-02 02:54:11 +04:00
NS_IMETHOD UnsuppressPainting();
NS_IMETHOD DisableThemeSupport();
virtual PRBool IsThemeSupportEnabled();
virtual nsresult GetAgentStyleSheets(nsCOMArray<nsIStyleSheet>& aSheets);
virtual nsresult SetAgentStyleSheets(const nsCOMArray<nsIStyleSheet>& aSheets);
virtual nsresult AddOverrideStyleSheet(nsIStyleSheet *aSheet);
virtual nsresult RemoveOverrideStyleSheet(nsIStyleSheet *aSheet);
NS_IMETHOD HandleEventWithTarget(nsEvent* aEvent, nsIFrame* aFrame,
nsIContent* aContent,
nsEventStatus* aStatus);
NS_IMETHOD GetEventTargetFrame(nsIFrame** aFrame);
NS_IMETHOD GetEventTargetContent(nsEvent* aEvent, nsIContent** aContent);
NS_IMETHOD IsReflowLocked(PRBool* aIsLocked);
virtual nsresult ReconstructFrames(void);
virtual void Freeze();
virtual void Thaw();
NS_IMETHOD RenderOffscreen(nsRect aRect, PRBool aUntrusted,
PRBool aIgnoreViewportScrolling,
nscolor aBackgroundColor,
nsIRenderingContext** aRenderedContext);
#ifdef IBMBIDI
NS_IMETHOD BidiStyleChangeReflow();
#endif
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//nsIViewObserver interface
NS_IMETHOD Paint(nsIView *aView,
nsIRenderingContext* aRenderingContext,
const nsRegion& aDirtyRegion);
NS_IMETHOD ComputeRepaintRegionForCopy(nsIView* aRootView,
nsIView* aMovingView,
nsPoint aDelta,
const nsRect& aCopyRect,
nsRegion* aRepaintRegion);
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NS_IMETHOD HandleEvent(nsIView* aView,
nsGUIEvent* aEvent,
nsEventStatus* aEventStatus);
NS_IMETHOD HandleDOMEventWithTarget(nsIContent* aTargetContent,
nsEvent* aEvent,
nsEventStatus* aStatus);
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NS_IMETHOD ResizeReflow(nsIView *aView, nscoord aWidth, nscoord aHeight);
NS_IMETHOD_(PRBool) IsVisible();
NS_IMETHOD_(void) WillPaint();
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// caret handling
NS_IMETHOD GetCaret(nsICaret **aOutCaret);
NS_IMETHOD_(void) MaybeInvalidateCaretPosition();
NS_IMETHOD SetCaretEnabled(PRBool aInEnable);
NS_IMETHOD SetCaretReadOnly(PRBool aReadOnly);
NS_IMETHOD GetCaretEnabled(PRBool *aOutEnabled);
NS_IMETHOD SetCaretVisibilityDuringSelection(PRBool aVisibility);
virtual already_AddRefed<nsICaret> SetCaret(nsICaret *aNewCaret);
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 WordExtendForDelete(PRBool aForward);
NS_IMETHOD LineMove(PRBool aForward, PRBool aExtend);
NS_IMETHOD IntraLineMove(PRBool aForward, PRBool aExtend);
NS_IMETHOD PageMove(PRBool aForward, PRBool aExtend);
NS_IMETHOD ScrollPage(PRBool aForward);
NS_IMETHOD ScrollLine(PRBool aForward);
NS_IMETHOD ScrollHorizontal(PRBool aLeft);
NS_IMETHOD CompleteScroll(PRBool aForward);
NS_IMETHOD CompleteMove(PRBool aForward, PRBool aExtend);
NS_IMETHOD SelectAll();
NS_IMETHOD CheckVisibility(nsIDOMNode *node, PRInt16 startOffset, PRInt16 EndOffset, PRBool *_retval);
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// nsIDocumentObserver
virtual void BeginUpdate(nsIDocument* aDocument, nsUpdateType aUpdateType);
virtual void EndUpdate(nsIDocument* aDocument, nsUpdateType aUpdateType);
virtual void BeginLoad(nsIDocument* aDocument);
virtual void EndLoad(nsIDocument* aDocument);
virtual void CharacterDataChanged(nsIDocument* aDocument,
nsIContent* aContent,
CharacterDataChangeInfo* aInfo);
virtual void ContentStatesChanged(nsIDocument* aDocument,
nsIContent* aContent1,
nsIContent* aContent2,
PRInt32 aStateMask);
virtual void AttributeChanged(nsIDocument* aDocument, nsIContent* aContent,
PRInt32 aNameSpaceID, nsIAtom* aAttribute,
PRInt32 aModType);
virtual void ContentAppended(nsIDocument* aDocument, nsIContent* aContainer,
PRInt32 aNewIndexInContainer);
virtual void ContentInserted(nsIDocument* aDocument, nsIContent* aContainer,
nsIContent* aChild, PRInt32 aIndexInContainer);
virtual void ContentRemoved(nsIDocument* aDocument, nsIContent* aContainer,
nsIContent* aChild, PRInt32 aIndexInContainer);
virtual void StyleSheetAdded(nsIDocument* aDocument,
nsIStyleSheet* aStyleSheet,
PRBool aDocumentSheet);
virtual void StyleSheetRemoved(nsIDocument* aDocument,
nsIStyleSheet* aStyleSheet,
PRBool aDocumentSheet);
virtual void StyleSheetApplicableStateChanged(nsIDocument* aDocument,
nsIStyleSheet* aStyleSheet,
PRBool aApplicable);
virtual void StyleRuleChanged(nsIDocument* aDocument,
nsIStyleSheet* aStyleSheet,
nsIStyleRule* aOldStyleRule,
nsIStyleRule* aNewStyleRule);
virtual void StyleRuleAdded(nsIDocument* aDocument,
nsIStyleSheet* aStyleSheet,
nsIStyleRule* aStyleRule);
virtual void StyleRuleRemoved(nsIDocument* aDocument,
nsIStyleSheet* aStyleSheet,
nsIStyleRule* aStyleRule);
NS_DECL_NSIOBSERVER
#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, nsPresContext* aPresContext, nsIFrame * aFrame, PRUint32 aColor);
NS_IMETHOD SetPaintFrameCount(PRBool aOn);
#endif
#ifdef DEBUG
virtual void ListStyleContexts(nsIFrame *aRootFrame, FILE *out,
PRInt32 aIndent = 0);
virtual void ListStyleSheets(FILE *out, PRInt32 aIndent = 0);
virtual void VerifyStyleTree();
#endif
#ifdef PR_LOGGING
static PRLogModuleInfo* gLog;
#endif
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protected:
virtual ~PresShell();
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void HandlePostedDOMEvents();
void HandlePostedAttributeChanges();
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void HandlePostedReflowCallbacks();
void UnsuppressAndInvalidate();
nsresult ReflowCommandAdded(nsHTMLReflowCommand* aRC);
nsresult ReflowCommandRemoved(nsHTMLReflowCommand* aRC);
// This method should be called after 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 there are no load-created reflow commands and we blocked
// onload on the document, we'll unblock it.
void DoneRemovingReflowCommands();
void WillCauseReflow() { ++mChangeNestCount; }
nsresult DidCauseReflow();
void WillDoReflow();
void DidDoReflow();
nsresult ProcessReflowCommands(PRBool aInterruptible);
void ClearReflowEventStatus();
void PostReflowEvent();
// Note: when PR_FALSE is returned, AlreadyInQueue assumes the command will
// in fact be added to the queue. If it's not, it needs to be removed from
// mReflowCommandTable (AlreadyInQueue will insert it in that table).
PRBool AlreadyInQueue(nsHTMLReflowCommand* aReflowCommand);
friend class nsPresShellEventCB;
class ReflowEvent;
friend class ReflowEvent;
class ReflowEvent : public nsRunnable {
public:
NS_DECL_NSIRUNNABLE
ReflowEvent(PresShell *aPresShell) : mPresShell(aPresShell) {
NS_ASSERTION(aPresShell, "Null parameters!");
}
void Revoke() { mPresShell = nsnull; }
private:
PresShell *mPresShell;
};
// Utility to determine if we're in the middle of a drag.
PRBool IsDragInProgress ( ) const ;
// Utility to find which view to scroll.
nsIScrollableView* GetViewToScroll(nsLayoutUtils::Direction aDirection);
PRBool mCaretEnabled;
#ifdef NS_DEBUG
nsresult CloneStyleSet(nsStyleSet* aSet, nsStyleSet** aResult);
PRBool VerifyIncrementalReflow();
PRBool mInVerifyReflow;
void ShowEventTargetDebug();
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#endif
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/**
* 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 SetPrefNoScriptRule();
nsresult SetPrefNoFramesRule(void);
/**
* Methods to handle changes to user and UA sheet lists that we get
* notified about.
*/
void AddUserSheet(nsISupports* aSheet);
void AddAgentSheet(nsISupports* aSheet);
void RemoveSheet(nsStyleSet::sheetType aType, nsISupports* aSheet);
nsICSSStyleSheet* mPrefStyleSheet; // mStyleSet owns it but we maintain a ref, may be null
#ifdef DEBUG
PRUint32 mUpdateCount;
#endif
// normal reflow commands
nsVoidArray mReflowCommands;
PLDHashTable mReflowCommandTable;
PRPackedBool mDocumentLoading;
PRPackedBool mDocumentOnloadBlocked;
PRPackedBool mIsReflowing;
PRPackedBool mIsReleasingAnonymousContent;
PRPackedBool mIgnoreFrameDestruction;
PRPackedBool mHaveShutDown;
// This is used to protect ourselves from triggering reflow while in the
// middle of frame construction and the like... it really shouldn't be
// needed, one hopes, but it is for now.
PRUint32 mChangeNestCount;
nsIFrame* mCurrentEventFrame;
nsCOMPtr<nsIContent> mCurrentEventContent;
nsVoidArray mCurrentEventFrameStack;
nsCOMArray<nsIContent> mCurrentEventContentStack;
nsSupportsHashtable* mAnonymousContentTable;
#ifdef NS_DEBUG
nsRect mCurrentTargetRect;
nsIView* mCurrentTargetView;
#endif
nsCOMPtr<nsICaret> mCaret;
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PRInt16 mSelectionFlags;
PRPackedBool mBatchReflows; // When set to true, the pres shell batches reflow commands.
Fix for bug #15360: Drag Selecting, Clicking, then Clicking leaves caret cruft. r=troy@netscape.com,kipp@netscape.com,evaughan@netscape.com,beard@netscape.com layout/html/base/src/nsGfxScrollFrame.cpp - Renamed all occurrences of ScrollPositionChanged() to to ScrollPositionDidChange() to match changes made to nsIScrollPositionListener. - Added ScrollPositionWillChange() stub method. layout/html/base/src/nsPresShell.cpp - Added PresShellViewEventListener class that implements the nsIScrollPositionListener and nsICompositeListener view interfaces. This allows us to turn caret rendering on and off when scrolling and repainting to prevent leaving caret cruft on the screen. - PresShellViewEventListener is created in InitialReflow(), and released in ~PresShell(). view/public/Makefile.in view/public/makefile.win view/public/MANIFEST - Added nsICompositeListener to list of files to be exported. view/public/nsICompositeListener.h - New file. Implementers of this interface can register themselves with the view manager to receive notification before and after a view is composited/refreshed. view/public/nsIScrollPositionListener.h - Added a ScrollPositionWillChange() method. - Changed ScrollPositionChanged() to ScrollPositionDidChange(). view/public/nsIViewManager.h - Added AddCompositeListener() and RemoveCompositeListener methods. view/src/nsScrollingView.cpp view/src/nsScrollingView.h - Added NotifyScrollPositionWillChange() and NotifyScrollPositionDidChange() methods. - Modified HandleScrollEvent() to call NotifyScrollPositionWill/DidChange() methods. Added temporary offsetX and offsetY variables to allow us to calculate new offsets without changing mOffsetX and mOffsetY before notifications are sent out. view/src/nsScrollPortView.cpp - Changed ScrollPositionChanged() to ScrollPositionDidChange(). - Modified ScrollTo() to call the listener's ScrollPositionWillChange() method. view/src/nsViewManager.cpp view/src/nsViewManager.h - Added AddCompositeListener() and RemoveCompositeListener() methods. - Added support for CompositeListener notifications in the Refresh() methods for regions and rects. - Fix for bug #15901: [DOGFOOD] Selected text does not clear when you type Modified UpdateView() so that rects with zero width and height are no longer added to our damage region. r=beard@netscape.com
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PresShellViewEventListener *mViewEventListener;
FrameArena mFrameArena;
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StackArena* mStackArena;
nsCOMPtr<nsIDragService> mDragService;
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PRInt32 mRCCreatedDuringLoad; // Counter to keep track of reflow commands created during doc
nsRevocableEventPtr<ReflowEvent> mReflowEvent;
// used for list of posted events and attribute changes. To be done
// after reflow.
nsDOMEventRequest* mFirstDOMEventRequest;
nsDOMEventRequest* mLastDOMEventRequest;
nsAttributeChangeRequest* mFirstAttributeRequest;
nsAttributeChangeRequest* mLastAttributeRequest;
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nsCallbackEventRequest* mFirstCallbackEventRequest;
nsCallbackEventRequest* mLastCallbackEventRequest;
PRPackedBool mIsThemeSupportDisabled; // Whether or not form controls should use nsITheme in this shell.
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<nsITimer> mPaintSuppressionTimer; // This timer controls painting suppression. Until it fires
// or all frames are constructed, we won't paint anything but
// our <body> background and scrollbars.
#define PAINTLOCK_EVENT_DELAY 250 // 250ms. This is actually
// pref-controlled, but we use this
// value if we fail to get the pref
// for any reason.
static void sPaintSuppressionCallback(nsITimer* aTimer, void* aPresShell); // A callback for the timer.
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:
PRBool InZombieDocument(nsIContent *aContent);
nsresult RetargetEventToParent(nsGUIEvent* aEvent,
nsEventStatus* aEventStatus);
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void FreeDynamicStack();
//helper funcs for event handling
protected:
//protected because nsPresShellEventCB needs this.
nsIFrame* GetCurrentEventFrame();
private:
void PushCurrentEventInfo(nsIFrame* aFrame, nsIContent* aContent);
void PopCurrentEventInfo();
nsresult HandleEventInternal(nsEvent* aEvent, nsIView* aView,
nsEventStatus *aStatus);
nsresult HandlePositionedEvent(nsIView* aView,
nsIFrame* aTargetFrame,
nsGUIEvent* aEvent,
nsEventStatus* aEventStatus);
//help funcs for resize events
void CreateResizeEventTimer();
void KillResizeEventTimer();
void FireResizeEvent();
static void sResizeEventCallback(nsITimer* aTimer, void* aPresShell) ;
nsCOMPtr<nsITimer> mResizeEventTimer;
typedef void (*nsPluginEnumCallback)(PresShell*, nsIContent*);
void EnumeratePlugins(nsIDOMDocument *aDocument,
const nsString &aPluginTag,
nsPluginEnumCallback aCallback);
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};
class nsPresShellEventCB : public nsDispatchingCallback
{
public:
nsPresShellEventCB(PresShell* aPresShell) : mPresShell(aPresShell) {}
virtual void HandleEvent(nsEventChainPostVisitor& aVisitor)
{
if (aVisitor.mPresContext && aVisitor.mEvent->eventStructType != NS_EVENT) {
nsIFrame* frame = mPresShell->GetCurrentEventFrame();
if (frame) {
frame->HandleEvent(aVisitor.mPresContext,
(nsGUIEvent*) aVisitor.mEvent,
&aVisitor.mEventStatus);
}
}
}
nsRefPtr<PresShell> mPresShell;
};
#ifdef PR_LOGGING
PRLogModuleInfo* PresShell::gLog;
#endif
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#ifdef NS_DEBUG
static void
VerifyStyleTree(nsPresContext* aPresContext, nsFrameManager* aFrameManager)
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{
if (nsIFrameDebug::GetVerifyStyleTreeEnable()) {
nsIFrame* rootFrame = aFrameManager->GetRootFrame();
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aFrameManager->DebugVerifyStyleTree(rootFrame);
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}
}
#define VERIFY_STYLE_TREE ::VerifyStyleTree(mPresContext, FrameManager())
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#else
#define VERIFY_STYLE_TREE
#endif
static PRBool gVerifyReflowEnabled;
PRBool
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nsIPresShell::GetVerifyReflowEnable()
{
#ifdef NS_DEBUG
static PRBool firstTime = PR_TRUE;
if (firstTime) {
firstTime = PR_FALSE;
char* flags = PR_GetEnv("GECKO_VERIFY_REFLOW_FLAGS");
if (flags) {
PRBool error = PR_FALSE;
for (;;) {
char* comma = PL_strchr(flags, ',');
if (comma)
*comma = '\0';
PRBool found = PR_FALSE;
const VerifyReflowFlags* flag = gFlags;
const VerifyReflowFlags* limit = gFlags + NUM_VERIFY_REFLOW_FLAGS;
while (flag < limit) {
if (PL_strcasecmp(flag->name, flags) == 0) {
gVerifyReflowFlags |= flag->bit;
found = PR_TRUE;
break;
}
++flag;
}
if (! found)
error = PR_TRUE;
if (! comma)
break;
*comma = ',';
flags = comma + 1;
}
if (error)
ShowVerifyReflowFlags();
}
if (VERIFY_REFLOW_ON & gVerifyReflowFlags) {
gVerifyReflowEnabled = PR_TRUE;
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}
printf("Note: verifyreflow is %sabled",
gVerifyReflowEnabled ? "en" : "dis");
if (VERIFY_REFLOW_NOISY & gVerifyReflowFlags) {
printf(" (noisy)");
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}
if (VERIFY_REFLOW_ALL & gVerifyReflowFlags) {
printf(" (all)");
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}
if (VERIFY_REFLOW_DUMP_COMMANDS & gVerifyReflowFlags) {
printf(" (show reflow commands)");
}
if (VERIFY_REFLOW_NOISY_RC & gVerifyReflowFlags) {
printf(" (noisy reflow commands)");
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if (VERIFY_REFLOW_REALLY_NOISY_RC & gVerifyReflowFlags) {
printf(" (REALLY noisy reflow commands)");
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}
}
printf("\n");
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}
#endif
return gVerifyReflowEnabled;
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}
void
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nsIPresShell::SetVerifyReflowEnable(PRBool aEnabled)
{
gVerifyReflowEnabled = aEnabled;
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}
PRInt32
nsIPresShell::GetVerifyReflowFlags()
{
#ifdef NS_DEBUG
return gVerifyReflowFlags;
#else
return 0;
#endif
}
void
nsIPresShell::AddWeakFrame(nsWeakFrame* aWeakFrame)
{
if (aWeakFrame->GetFrame()) {
aWeakFrame->GetFrame()->AddStateBits(NS_FRAME_EXTERNAL_REFERENCE);
}
aWeakFrame->SetPreviousWeakFrame(mWeakFrames);
mWeakFrames = aWeakFrame;
}
void
nsIPresShell::RemoveWeakFrame(nsWeakFrame* aWeakFrame)
{
if (mWeakFrames == aWeakFrame) {
mWeakFrames = aWeakFrame->GetPreviousWeakFrame();
return;
}
nsWeakFrame* nextWeak = mWeakFrames;
while (nextWeak && nextWeak->GetPreviousWeakFrame() != aWeakFrame) {
nextWeak = nextWeak->GetPreviousWeakFrame();
}
if (nextWeak) {
nextWeak->SetPreviousWeakFrame(aWeakFrame->GetPreviousWeakFrame());
}
}
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//----------------------------------------------------------------------
nsresult
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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);
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}
PresShell::PresShell()
{
mIsAccessibilityActive = PR_FALSE;
mSelection = nsnull;
#ifdef MOZ_REFLOW_PERF
mReflowCountMgr = new ReflowCountMgr();
mReflowCountMgr->SetPresContext(mPresContext);
mReflowCountMgr->SetPresShell(this);
#endif
#ifdef PR_LOGGING
if (! gLog)
gLog = PR_NewLogModule("PresShell");
#endif
mSelectionFlags = nsISelectionDisplay::DISPLAY_TEXT | nsISelectionDisplay::DISPLAY_IMAGES;
mIsThemeSupportDisabled = PR_FALSE;
mIsReleasingAnonymousContent = PR_FALSE;
new (this) nsFrameManager();
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}
NS_IMPL_ISUPPORTS8(PresShell, nsIPresShell, nsIDocumentObserver,
nsIViewObserver, nsISelectionController,
nsISelectionDisplay, nsIObserver, nsISupportsWeakReference,
nsIMutationObserver)
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PresShell::~PresShell()
{
if (!mHaveShutDown) {
NS_NOTREACHED("Someone did not call nsIPresShell::destroy");
Destroy();
}
NS_ASSERTION(mCurrentEventContentStack.Count() == 0,
"Huh, event content left on the stack in pres shell dtor!");
NS_ASSERTION(mFirstDOMEventRequest == nsnull &&
mLastDOMEventRequest == nsnull &&
mFirstAttributeRequest == nsnull &&
mLastAttributeRequest == nsnull &&
mFirstCallbackEventRequest == nsnull &&
mLastCallbackEventRequest == nsnull,
"post-reflow queues not empty. This means we're leaking");
delete mStyleSet;
delete mFrameConstructor;
mCurrentEventContent = nsnull;
// if we allocated any stack memory free it.
FreeDynamicStack();
NS_IF_RELEASE(mPresContext);
NS_IF_RELEASE(mDocument);
NS_IF_RELEASE(mSelection);
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}
/**
* Initialize the presentation shell. Create view manager and style
* manager.
*/
NS_IMETHODIMP
PresShell::Init(nsIDocument* aDocument,
nsPresContext* aPresContext,
nsIViewManager* aViewManager,
nsStyleSet* aStyleSet,
nsCompatibility aCompatMode)
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{
NS_PRECONDITION(nsnull != aDocument, "null ptr");
NS_PRECONDITION(nsnull != aPresContext, "null ptr");
NS_PRECONDITION(nsnull != aViewManager, "null ptr");
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if ((nsnull == aDocument) || (nsnull == aPresContext) ||
(nsnull == aViewManager)) {
return NS_ERROR_NULL_POINTER;
}
if (mDocument) {
NS_WARNING("PresShell double init'ed");
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return NS_ERROR_ALREADY_INITIALIZED;
}
mDocument = aDocument;
NS_ADDREF(mDocument);
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mViewManager = aViewManager;
// Create our frame constructor.
mFrameConstructor = new nsCSSFrameConstructor(mDocument, this);
NS_ENSURE_TRUE(mFrameConstructor, NS_ERROR_OUT_OF_MEMORY);
// The document viewer owns both view manager and pres shell.
mViewManager->SetViewObserver(this);
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// Bind the context to the presentation shell.
mPresContext = aPresContext;
NS_ADDREF(mPresContext);
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aPresContext->SetShell(this);
// Create our reflow command hashtable
static PLDHashTableOps reflowCommandOps =
{
PL_DHashAllocTable,
PL_DHashFreeTable,
ReflowCommandHashGetKey,
ReflowCommandHashHashKey,
ReflowCommandHashMatchEntry,
PL_DHashMoveEntryStub,
PL_DHashClearEntryStub,
PL_DHashFinalizeStub
};
if (!PL_DHashTableInit(&mReflowCommandTable, &reflowCommandOps,
nsnull, sizeof(ReflowCommandEntry), 16)) {
mReflowCommandTable.ops = nsnull;
return NS_ERROR_OUT_OF_MEMORY;
}
// Now we can initialize the style set.
nsresult result = aStyleSet->Init(aPresContext);
NS_ENSURE_SUCCESS(result, result);
// From this point on, any time we return an error we need to make
// sure to null out mStyleSet first, since an error return from this
// method will cause the caller to delete the style set, so we don't
// want to delete it in our destructor.
mStyleSet = aStyleSet;
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// 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);
result = CallCreateInstance(kFrameSelectionCID, &mSelection);
if (NS_FAILED(result)) {
mStyleSet = nsnull;
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return result;
}
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// Create and initialize the frame manager
result = FrameManager()->Init(this, mStyleSet);
if (NS_FAILED(result)) {
NS_WARNING("Frame manager initialization failed");
mStyleSet = nsnull;
return result;
}
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mSelection->Init(this, nsnull);
// 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))
{
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mCaret->Init(this);
}
//SetCaretEnabled(PR_TRUE); // make it show in browser windows
#endif
//set up selection to be displayed in document
// Don't enable selection for print media
nsPresContext::nsPresContextType type = aPresContext->Type();
if (type != nsPresContext::eContext_PrintPreview &&
type != nsPresContext::eContext_Print)
SetDisplaySelection(nsISelectionController::SELECTION_DISABLED);
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if (gMaxRCProcessingTime == -1) {
gMaxRCProcessingTime =
nsContentUtils::GetIntPref("layout.reflow.timeslice",
NS_MAX_REFLOW_TIME);
}
{
nsCOMPtr<nsIObserverService> os =
do_GetService("@mozilla.org/observer-service;1", &result);
if (os) {
os->AddObserver(this, NS_LINK_VISITED_EVENT_TOPIC, PR_FALSE);
os->AddObserver(this, "agent-sheet-added", PR_FALSE);
os->AddObserver(this, "user-sheet-added", PR_FALSE);
os->AddObserver(this, "agent-sheet-removed", PR_FALSE);
os->AddObserver(this, "user-sheet-removed", PR_FALSE);
#ifdef MOZ_XUL
os->AddObserver(this, "chrome-flush-skin-caches", PR_FALSE);
#endif
}
}
// cache the drag service so we can check it during reflows
mDragService = do_GetService("@mozilla.org/widget/dragservice;1");
#ifdef MOZ_REFLOW_PERF
if (mReflowCountMgr) {
PRBool paintFrameCounts =
nsContentUtils::GetBoolPref("layout.reflow.showframecounts");
PRBool dumpFrameCounts =
nsContentUtils::GetBoolPref("layout.reflow.dumpframecounts");
PRBool dumpFrameByFrameCounts =
nsContentUtils::GetBoolPref("layout.reflow.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 (mHaveShutDown)
return NS_OK;
if (mPresContext) {
// We need to notify the destroying the nsPresContext to ESM for
// suppressing to use from ESM.
mPresContext->EventStateManager()->NotifyDestroyPresContext(mPresContext);
}
{
nsCOMPtr<nsIObserverService> os =
do_GetService("@mozilla.org/observer-service;1");
if (os) {
os->RemoveObserver(this, NS_LINK_VISITED_EVENT_TOPIC);
os->RemoveObserver(this, "agent-sheet-added");
os->RemoveObserver(this, "user-sheet-added");
os->RemoveObserver(this, "agent-sheet-removed");
os->RemoveObserver(this, "user-sheet-removed");
#ifdef MOZ_XUL
os->RemoveObserver(this, "chrome-flush-skin-caches");
#endif
}
}
// If our paint suppression timer is still active, kill it.
if (mPaintSuppressionTimer) {
mPaintSuppressionTimer->Cancel();
mPaintSuppressionTimer = nsnull;
}
if (mCaret) {
mCaret->Terminate();
mCaret = nsnull;
}
// release our pref style sheet, if we have one still
ClearPreferenceStyleRules();
// free our table of anonymous content
ReleaseAnonymousContent();
mIsDestroying = PR_TRUE;
// We can't release all the event content in
// mCurrentEventContentStack here since there might be code on the
// stack that will release the event content too. Double release
// bad!
// The frames will be torn down, so remove them from the current
// event frame stack (since they'd be dangling references if we'd
// leave them in) and null out the mCurrentEventFrame pointer as
// well.
mCurrentEventFrame = nsnull;
PRInt32 i, count = mCurrentEventFrameStack.Count();
for (i = 0; i < count; i++) {
mCurrentEventFrameStack.ReplaceElementAt(nsnull, i);
}
if (mViewManager) {
// Clear the view manager's weak pointer back to |this| in case it
// was leaked.
mViewManager->SetViewObserver(nsnull);
mViewManager = nsnull;
}
mStyleSet->BeginShutdown(mPresContext);
// 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
mFrameConstructor->WillDestroyFrameTree();
FrameManager()->Destroy();
NS_WARN_IF_FALSE(!mWeakFrames, "Weak frames alive after destroying FrameManager");
while (mWeakFrames) {
mWeakFrames->Clear(this);
}
// Let the style set do its cleanup.
mStyleSet->Shutdown(mPresContext);
if (mPresContext) {
// Clear out the prescontext's property table -- since our frame tree is
// now dead, we shouldn't be looking up any more properties in that table.
// We want to do this before we call SetShell() on the prescontext, so
// property destructors can usefully call GetPresShell() on the
// prescontext.
mPresContext->PropertyTable()->DeleteAllProperties();
// We hold a reference to the pres context, and it holds a weak link back
// to us. To avoid the pres context having a dangling reference, set its
// pres shell to NULL
mPresContext->SetShell(nsnull);
// Clear the link handler (weak reference) as well
mPresContext->SetLinkHandler(nsnull);
}
if (mViewEventListener) {
mViewEventListener->SetPresShell((nsIPresShell*)nsnull);
NS_RELEASE(mViewEventListener);
}
// Revoke any pending reflow event
mReflowEvent.Revoke();
CancelAllReflowCommands();
NS_ASSERTION(!mDocumentOnloadBlocked,
"CancelAllReflowCommands() didn't unblock onload?");
KillResizeEventTimer();
// Now that mReflowCommandTable won't be accessed anymore, finish it
if (mReflowCommandTable.ops) {
PL_DHashTableFinish(&mReflowCommandTable);
}
mHaveShutDown = PR_TRUE;
1998-04-14 00:24:54 +04:00
return NS_OK;
}
2000-03-31 11:02:06 +04:00
// Dynamic stack memory allocation
NS_IMETHODIMP
PresShell::PushStackMemory()
{
if (!mStackArena) {
mStackArena = new StackArena();
if (!mStackArena)
return NS_ERROR_OUT_OF_MEMORY;
}
2000-03-31 11:02:06 +04:00
return mStackArena->Push();
}
NS_IMETHODIMP
PresShell::PopStackMemory()
{
NS_ENSURE_TRUE(mStackArena, NS_ERROR_UNEXPECTED);
2000-03-31 11:02:06 +04:00
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;
}
2000-03-31 11:02:06 +04:00
return mStackArena->Allocate(aSize, aResult);
}
void
PresShell::FreeDynamicStack()
{
if (mStackArena) {
delete mStackArena;
mStackArena = nsnull;
}
}
void
PresShell::FreeFrame(size_t aSize, void* aPtr)
{
mFrameArena.FreeFrame(aSize, aPtr);
}
void*
PresShell::AllocateFrame(size_t aSize)
{
return mFrameArena.AllocateFrame(aSize);
}
NS_IMETHODIMP
PresShell::GetActiveAlternateStyleSheet(nsString& aSheetTitle)
{ // first non-html sheet in style set that has title
if (mStyleSet) {
PRInt32 count = mStyleSet->SheetCount(nsStyleSet::eDocSheet);
PRInt32 index;
NS_NAMED_LITERAL_STRING(textHtml, "text/html");
for (index = 0; index < count; index++) {
nsIStyleSheet* sheet = mStyleSet->StyleSheetAt(nsStyleSet::eDocSheet,
index);
if (nsnull != sheet) {
nsAutoString type;
sheet->GetType(type);
if (PR_FALSE == type.Equals(textHtml)) {
nsAutoString title;
sheet->GetTitle(title);
if (!title.IsEmpty()) {
aSheetTitle = title;
index = count; // stop looking
}
}
}
}
}
return NS_OK;
}
NS_IMETHODIMP
PresShell::SelectAlternateStyleSheet(const nsString& aSheetTitle)
{
if (mDocument && mStyleSet) {
mStyleSet->BeginUpdate();
PRInt32 count = mDocument->GetNumberOfStyleSheets();
PRInt32 index;
NS_NAMED_LITERAL_STRING(textHtml,"text/html");
for (index = 0; index < count; index++) {
nsIStyleSheet *sheet = mDocument->GetStyleSheetAt(index);
PRBool complete;
sheet->GetComplete(complete);
if (complete) {
nsAutoString type;
sheet->GetType(type);
if (!type.Equals(textHtml)) {
nsAutoString title;
sheet->GetTitle(title);
if (!title.IsEmpty()) {
if (title.Equals(aSheetTitle)) {
mStyleSet->AddDocStyleSheet(sheet, mDocument);
}
else {
mStyleSet->RemoveStyleSheet(nsStyleSet::eDocSheet, sheet);
}
}
}
}
}
mStyleSet->EndUpdate();
ReconstructStyleData();
}
return NS_OK;
}
NS_IMETHODIMP
PresShell::ListAlternateStyleSheets(nsStringArray& aTitleList)
{
// XXX should this be returning incomplete sheets? Probably.
if (mDocument) {
PRInt32 count = mDocument->GetNumberOfStyleSheets();
PRInt32 index;
NS_NAMED_LITERAL_STRING(textHtml,"text/html");
for (index = 0; index < count; index++) {
nsIStyleSheet *sheet = mDocument->GetStyleSheetAt(index);
if (sheet) {
nsAutoString type;
sheet->GetType(type);
if (PR_FALSE == type.Equals(textHtml)) {
nsAutoString title;
sheet->GetTitle(title);
if (!title.IsEmpty()) {
if (-1 == aTitleList.IndexOf(title)) {
aTitleList.AppendString(title);
}
}
}
}
}
}
return NS_OK;
}
1998-12-08 21:26:06 +03:00
void
nsIPresShell::SetAuthorStyleDisabled(PRBool aStyleDisabled)
{
if (aStyleDisabled != mStyleSet->GetAuthorStyleDisabled()) {
mStyleSet->SetAuthorStyleDisabled(aStyleDisabled);
ReconstructStyleData();
}
}
PRBool
nsIPresShell::GetAuthorStyleDisabled()
{
return mStyleSet->GetAuthorStyleDisabled();
}
NS_IMETHODIMP
PresShell::SetPreferenceStyleRules(PRBool aForceReflow)
{
if (!mDocument) {
return NS_ERROR_NULL_POINTER;
}
nsPIDOMWindow *window = mDocument->GetWindow();
// If the document doesn't have a window there's no need to notify
// its presshell about changes to preferences since the document is
// in a state where it doesn't matter any more (see
// DocumentViewerImpl::Close()).
if (!window) {
return NS_ERROR_NULL_POINTER;
}
NS_PRECONDITION(mPresContext, "presContext cannot be null");
if (mPresContext) {
nsresult result = NS_OK;
// first, make sure this is not a chrome shell
nsCOMPtr<nsISupports> container = mPresContext->GetContainer();
if (container) {
nsCOMPtr<nsIDocShellTreeItem> 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();
}
if (NS_SUCCEEDED(result)) {
result = SetPrefNoScriptRule();
}
if (NS_SUCCEEDED(result)) {
result = SetPrefNoFramesRule();
}
}
#ifdef DEBUG_attinasi
printf( "Preference Style Rules set: error=%ld\n", (long)result);
#endif
if (aForceReflow){
mPresContext->ClearStyleDataAndReflow();
}
return result;
}
return NS_ERROR_NULL_POINTER;
}
nsresult PresShell::ClearPreferenceStyleRules(void)
{
nsresult result = NS_OK;
if (mPrefStyleSheet) {
NS_ASSERTION(mStyleSet, "null styleset entirely unexpected!");
if (mStyleSet) {
// remove the sheet from the styleset:
// - note that we have to check for success by comparing the count before and after...
#ifdef NS_DEBUG
PRInt32 numBefore = mStyleSet->SheetCount(nsStyleSet::eUserSheet);
NS_ASSERTION(numBefore > 0, "no user stylesheets in styleset, but we have one!");
#endif
mStyleSet->RemoveStyleSheet(nsStyleSet::eUserSheet, mPrefStyleSheet);
#ifdef DEBUG_attinasi
NS_ASSERTION((numBefore - 1) == mStyleSet->GetNumberOfUserStyleSheets(),
"Pref stylesheet was not removed");
printf("PrefStyleSheet removed\n");
#endif
// clear the sheet pointer: it is strictly historical now
NS_RELEASE(mPrefStyleSheet);
}
}
return result;
}
nsresult PresShell::CreatePreferenceStyleSheet(void)
{
NS_ASSERTION(!mPrefStyleSheet, "prefStyleSheet already exists");
nsresult result = CallCreateInstance(kCSSStyleSheetCID, &mPrefStyleSheet);
if (NS_SUCCEEDED(result)) {
NS_ASSERTION(mPrefStyleSheet, "null but no error");
nsCOMPtr<nsIURI> uri;
result = NS_NewURI(getter_AddRefs(uri), "about:PreferenceStyleSheet", nsnull);
if (NS_SUCCEEDED(result)) {
NS_ASSERTION(uri, "null but no error");
result = mPrefStyleSheet->SetURIs(uri, uri);
if (NS_SUCCEEDED(result)) {
mPrefStyleSheet->SetComplete();
nsCOMPtr<nsIDOMCSSStyleSheet> sheet(do_QueryInterface(mPrefStyleSheet));
if (sheet) {
PRUint32 index;
result = sheet->InsertRule(NS_LITERAL_STRING("@namespace url(http://www.w3.org/1999/xhtml);"),
0, &index);
NS_ENSURE_SUCCESS(result, result);
}
mStyleSet->AppendStyleSheet(nsStyleSet::eUserSheet, mPrefStyleSheet);
}
}
} else {
result = NS_ERROR_OUT_OF_MEMORY;
}
#ifdef DEBUG_attinasi
printf("CreatePrefStyleSheet completed: error=%ld\n",(long)result);
#endif
return result;
}
// XXX We want these after the @namespace rule. Does order matter
// for these rules, or can we call nsICSSStyleRule::StyleRuleCount()
// and just "append"?
static PRUint32 sInsertPrefSheetRulesAt = 1;
nsresult PresShell::SetPrefColorRules(void)
{
NS_ASSERTION(mPresContext,"null prescontext not allowed");
if (mPresContext) {
nsresult result = NS_OK;
// see if we need to create the rules first
PRBool useDocColors =
mPresContext->GetCachedBoolPref(kPresContext_UseDocumentColors);
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 = mPresContext->DefaultBackgroundColor();
nscolor textColor = mPresContext->DefaultColor();
// get the DOM interface to the stylesheet
nsCOMPtr<nsIDOMCSSStyleSheet> 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("border-color: -moz-use-text-color !important; ") +
NS_LITERAL_STRING("background:") +
strBackgroundColor +
NS_LITERAL_STRING(" !important; }"),
sInsertPrefSheetRulesAt, &index);
NS_ENSURE_SUCCESS(result, result);
///////////////////////////////////////////////////////////////
// - everything else inherits the color
// (the background color will be handled in
// nsRuleNode::ComputeBackgroundData)
result = sheet->InsertRule(NS_LITERAL_STRING("*|* {color: inherit !important; border-color: -moz-use-text-color !important; background-image: none !important; } "),
sInsertPrefSheetRulesAt, &index);
}
}
}
return result;
} else {
return NS_ERROR_FAILURE;
}
}
nsresult
PresShell::SetPrefNoScriptRule()
{
nsresult rv = NS_OK;
// also handle the case where print is done from print preview
// see bug #342439 for more details
PRBool scriptEnabled = mDocument->IsScriptEnabled() ||
((mPresContext->Type() == nsPresContext::eContext_PrintPreview ||
mPresContext->Type() == nsPresContext::eContext_Print) &&
NS_PTR_TO_INT32(mDocument->GetProperty(
nsLayoutAtoms::scriptEnabledBeforePrintPreview)));
if (scriptEnabled) {
if (!mPrefStyleSheet) {
rv = CreatePreferenceStyleSheet();
NS_ENSURE_SUCCESS(rv, rv);
}
// get the DOM interface to the stylesheet
nsCOMPtr<nsIDOMCSSStyleSheet> sheet(do_QueryInterface(mPrefStyleSheet, &rv));
NS_ENSURE_SUCCESS(rv, rv);
PRUint32 index = 0;
rv = sheet->InsertRule(NS_LITERAL_STRING("noscript{display:none!important}"),
sInsertPrefSheetRulesAt, &index);
}
return rv;
}
nsresult PresShell::SetPrefNoFramesRule(void)
{
NS_ASSERTION(mPresContext,"null prescontext not allowed");
if (!mPresContext) {
return NS_ERROR_FAILURE;
}
nsresult rv = NS_OK;
if (!mPrefStyleSheet) {
rv = CreatePreferenceStyleSheet();
NS_ENSURE_SUCCESS(rv, rv);
}
NS_ASSERTION(mPrefStyleSheet, "prefstylesheet should not be null");
// get the DOM interface to the stylesheet
nsCOMPtr<nsIDOMCSSStyleSheet> sheet(do_QueryInterface(mPrefStyleSheet, &rv));
NS_ENSURE_SUCCESS(rv, rv);
PRBool allowSubframes = PR_TRUE;
nsCOMPtr<nsISupports> container = mPresContext->GetContainer();
nsCOMPtr<nsIDocShell> docShell(do_QueryInterface(container));
if (docShell) {
docShell->GetAllowSubframes(&allowSubframes);
}
if (!allowSubframes) {
PRUint32 index = 0;
rv = sheet->InsertRule(NS_LITERAL_STRING("noframes{display:block}"),
sInsertPrefSheetRulesAt, &index);
NS_ENSURE_SUCCESS(rv, rv);
rv = sheet->InsertRule(NS_LITERAL_STRING("frame, frameset, iframe {display:none!important}"),
sInsertPrefSheetRulesAt, &index);
}
return rv;
}
nsresult PresShell::SetPrefLinkRules(void)
{
NS_ASSERTION(mPresContext,"null prescontext not allowed");
if (!mPresContext) {
return NS_ERROR_FAILURE;
}
nsresult rv = NS_OK;
if (!mPrefStyleSheet) {
rv = CreatePreferenceStyleSheet();
NS_ENSURE_SUCCESS(rv, rv);
}
NS_ASSERTION(mPrefStyleSheet, "prefstylesheet should not be null");
// get the DOM interface to the stylesheet
nsCOMPtr<nsIDOMCSSStyleSheet> sheet(do_QueryInterface(mPrefStyleSheet, &rv));
NS_ENSURE_SUCCESS(rv, rv);
// support default link colors:
// this means the link colors need to be overridable,
// which they are if we put them in the agent stylesheet,
// though if using an override sheet this will cause authors grief still
// In the agent stylesheet, they are !important when we are ignoring document colors
nscolor linkColor(mPresContext->DefaultLinkColor());
nscolor activeColor(mPresContext->DefaultActiveLinkColor());
nscolor visitedColor(mPresContext->DefaultVisitedLinkColor());
PRBool useDocColors =
mPresContext->GetCachedBoolPref(kPresContext_UseDocumentColors);
NS_NAMED_LITERAL_STRING(notImportantStr, "}");
NS_NAMED_LITERAL_STRING(importantStr, "!important}");
const nsAString& ruleClose = useDocColors ? notImportantStr : importantStr;
PRUint32 index = 0;
nsAutoString strColor;
// insert a rule to color links: '*|*:link {color: #RRGGBB [!important];}'
ColorToString(linkColor, strColor);
rv = sheet->InsertRule(NS_LITERAL_STRING("*|*:link{color:") +
strColor + ruleClose,
sInsertPrefSheetRulesAt, &index);
NS_ENSURE_SUCCESS(rv, rv);
// - visited links: '*|*:visited {color: #RRGGBB [!important];}'
ColorToString(visitedColor, strColor);
rv = sheet->InsertRule(NS_LITERAL_STRING("*|*:visited{color:") +
strColor + ruleClose,
sInsertPrefSheetRulesAt, &index);
NS_ENSURE_SUCCESS(rv, rv);
// - active links: '*|*:-moz-any-link:active {color: #RRGGBB [!important];}'
ColorToString(activeColor, strColor);
rv = sheet->InsertRule(NS_LITERAL_STRING("*|*:-moz-any-link:active{color:") +
strColor + ruleClose,
sInsertPrefSheetRulesAt, &index);
NS_ENSURE_SUCCESS(rv, rv);
PRBool underlineLinks =
mPresContext->GetCachedBoolPref(kPresContext_UnderlineLinks);
if (underlineLinks) {
// create a rule to make underlining happen
// '*|*:-moz-any-link {text-decoration:[underline|none];}'
// no need for important, we want these to be overridable
// NOTE: these must go in the agent stylesheet or they cannot be
// overridden by authors
rv = sheet->InsertRule(NS_LITERAL_STRING("*|*:-moz-any-link{text-decoration:underline}"),
sInsertPrefSheetRulesAt, &index);
} else {
rv = sheet->InsertRule(NS_LITERAL_STRING("*|*:-moz-any-link{text-decoration:none}"),
sInsertPrefSheetRulesAt, &index);
}
return rv;
}
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<nsIDOMCSSStyleSheet> sheet(do_QueryInterface(mPrefStyleSheet,&result));
if (NS_SUCCEEDED(result)) {
if (mPresContext->GetUseFocusColors()) {
nscolor focusBackground(mPresContext->FocusBackgroundColor());
nscolor focusText(mPresContext->FocusTextColor());
// insert a rule to make focus the preferred color
PRUint32 index = 0;
nsAutoString strRule, strColor;
///////////////////////////////////////////////////////////////
// - focus: '*:focus
ColorToString(focusText,strColor);
strRule.AppendLiteral("*:focus,*:focus>font {color: ");
strRule.Append(strColor);
strRule.AppendLiteral(" !important; background-color: ");
ColorToString(focusBackground,strColor);
strRule.Append(strColor);
strRule.AppendLiteral(" !important; } ");
// insert the rules
result = sheet->InsertRule(strRule, sInsertPrefSheetRulesAt, &index);
}
PRUint8 focusRingWidth = mPresContext->FocusRingWidth();
PRBool focusRingOnAnything = mPresContext->GetFocusRingOnAnything();
if ((NS_SUCCEEDED(result) && focusRingWidth != 1 && focusRingWidth <= 4 ) || focusRingOnAnything) {
PRUint32 index = 0;
nsAutoString strRule;
if (!focusRingOnAnything)
strRule.AppendLiteral("*|*:link:focus, *|*:visited"); // If we only want focus rings on the normal things like links
strRule.AppendLiteral(":focus {outline: "); // For example 3px dotted WindowText (maximum 4)
strRule.AppendInt(focusRingWidth);
strRule.AppendLiteral("px dotted WindowText !important; } "); // For example 3px dotted WindowText
// insert the rules
result = sheet->InsertRule(strRule, sInsertPrefSheetRulesAt, &index);
NS_ENSURE_SUCCESS(result, result);
if (focusRingWidth != 1) {
// If the focus ring width is different from the default, fix buttons with rings
strRule.AssignLiteral("button::-moz-focus-inner, input[type=\"reset\"]::-moz-focus-inner,");
strRule.AppendLiteral("input[type=\"button\"]::-moz-focus-inner, ");
strRule.AppendLiteral("input[type=\"submit\"]::-moz-focus-inner { padding: 1px 2px 1px 2px; border: ");
strRule.AppendInt(focusRingWidth);
strRule.AppendLiteral("px dotted transparent !important; } ");
result = sheet->InsertRule(strRule, sInsertPrefSheetRulesAt, &index);
NS_ENSURE_SUCCESS(result, result);
strRule.AssignLiteral("button:focus::-moz-focus-inner, input[type=\"reset\"]:focus::-moz-focus-inner,");
strRule.AppendLiteral("input[type=\"button\"]:focus::-moz-focus-inner, input[type=\"submit\"]:focus::-moz-focus-inner {");
strRule.AppendLiteral("border-color: ButtonText !important; }");
result = sheet->InsertRule(strRule, sInsertPrefSheetRulesAt, &index);
}
}
}
}
return result;
}
void
PresShell::AddUserSheet(nsISupports* aSheet)
{
// Make sure this does what DocumentViewerImpl::CreateStyleSet does wrt
// ordering. We want this new sheet to come after all the existing stylesheet
// service sheets, but before other user sheets; see nsIStyleSheetService.idl
// for the ordering. Just remove and readd all the nsStyleSheetService
// sheets.
nsCOMPtr<nsIStyleSheetService> dummy =
do_GetService(NS_STYLESHEETSERVICE_CONTRACTID);
mStyleSet->BeginUpdate();
nsStyleSheetService *sheetService = nsStyleSheetService::gInstance;
nsCOMArray<nsIStyleSheet> & userSheets = *sheetService->UserStyleSheets();
PRInt32 i;
// Iterate forwards when removing so the searches for RemoveStyleSheet are as
// short as possible.
for (i = 0; i < userSheets.Count(); ++i) {
mStyleSet->RemoveStyleSheet(nsStyleSet::eUserSheet, userSheets[i]);
}
// Now iterate backwards, so that the order of userSheets will be the same as
// the order of sheets from it in the style set.
for (i = userSheets.Count() - 1; i >= 0; --i) {
mStyleSet->PrependStyleSheet(nsStyleSet::eUserSheet, userSheets[i]);
}
mStyleSet->EndUpdate();
ReconstructStyleData();
}
void
PresShell::AddAgentSheet(nsISupports* aSheet)
{
// Make sure this does what DocumentViewerImpl::CreateStyleSet does
// wrt ordering.
nsCOMPtr<nsIStyleSheet> sheet = do_QueryInterface(aSheet);
if (!sheet) {
return;
}
mStyleSet->AppendStyleSheet(nsStyleSet::eAgentSheet, sheet);
ReconstructStyleData();
}
void
PresShell::RemoveSheet(nsStyleSet::sheetType aType, nsISupports* aSheet)
{
nsCOMPtr<nsIStyleSheet> sheet = do_QueryInterface(aSheet);
if (!sheet) {
return;
}
mStyleSet->RemoveStyleSheet(aType, sheet);
ReconstructStyleData();
}
NS_IMETHODIMP
PresShell::SetDisplaySelection(PRInt16 aToggle)
{
mSelection->SetDisplaySelection(aToggle);
return NS_OK;
}
NS_IMETHODIMP
PresShell::GetDisplaySelection(PRInt16 *aToggle)
{
*aToggle = mSelection->GetDisplaySelection();
return NS_OK;
}
NS_IMETHODIMP
PresShell::GetSelection(SelectionType aType, nsISelection **aSelection)
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{
if (!aSelection || !mSelection)
return NS_ERROR_NULL_POINTER;
*aSelection = mSelection->GetSelection(aType);
if (!(*aSelection))
return NS_ERROR_INVALID_ARG;
NS_ADDREF(*aSelection);
return NS_OK;
}
nsISelection*
PresShell::GetCurrentSelection(SelectionType aType)
{
if (!mSelection)
return nsnull;
return mSelection->GetSelection(aType);
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}
NS_IMETHODIMP
Partial fix for bug 141900 (Text entry fields in forms excruciatingly slow.) mozilla/content/base/public/nsISelectionController.idl mozilla/content/base/src/nsSelection.cpp mozilla/editor/composer/src/nsEditorShell.cpp mozilla/editor/idl/nsIPlaintextEditor.idl mozilla/editor/libeditor/base/nsEditor.cpp mozilla/editor/libeditor/base/nsEditor.h mozilla/editor/libeditor/html/nsHTMLDataTransfer.cpp mozilla/editor/libeditor/html/nsHTMLEditor.cpp mozilla/editor/libeditor/text/nsEditorEventListeners.cpp mozilla/editor/libeditor/text/nsPlaintextDataTransfer.cpp mozilla/editor/libeditor/text/nsPlaintextEditor.cpp mozilla/editor/txtsvc/src/nsTextServicesDocument.cpp mozilla/editor/ui/dialogs/content/EdTableProps.js mozilla/embedding/components/find/src/nsWebBrowserFind.cpp mozilla/extensions/xmlterm/base/mozXMLTermSession.cpp mozilla/layout/base/public/nsIFrameSelection.h mozilla/layout/html/base/src/nsPresShell.cpp mozilla/layout/html/forms/src/nsGfxTextControlFrame2.cpp mozilla/mailnews/compose/src/nsMsgCompose.cpp mozilla/xpfe/browser/resources/content/viewPartialSource.js - Added aIsSynchronous arg to the ScrollSelectionIntoView() method of nsISelectionController and nsIFrameSelection. Updated all callers to pass new arg. - Modified selection to post a plevent to call which does the call to ScrollIntoView() in the async ScrollIntoView() case. - Edits in text widgets now use asynchronous reflow, paint, and scroll processing full time. - Removed redundant ScrollSelectionIntoView() calls in the editor event listeners. - Editor IME code now forced to flush reflows and paints before getting caret coordinates. r=jfrancis@netscape.com sr=waterson@netscape.com
2002-06-14 00:35:12 +04:00
PresShell::ScrollSelectionIntoView(SelectionType aType, SelectionRegion aRegion, PRBool aIsSynchronous)
{
if (!mSelection)
return NS_ERROR_NULL_POINTER;
Partial fix for bug 141900 (Text entry fields in forms excruciatingly slow.) mozilla/content/base/public/nsISelectionController.idl mozilla/content/base/src/nsSelection.cpp mozilla/editor/composer/src/nsEditorShell.cpp mozilla/editor/idl/nsIPlaintextEditor.idl mozilla/editor/libeditor/base/nsEditor.cpp mozilla/editor/libeditor/base/nsEditor.h mozilla/editor/libeditor/html/nsHTMLDataTransfer.cpp mozilla/editor/libeditor/html/nsHTMLEditor.cpp mozilla/editor/libeditor/text/nsEditorEventListeners.cpp mozilla/editor/libeditor/text/nsPlaintextDataTransfer.cpp mozilla/editor/libeditor/text/nsPlaintextEditor.cpp mozilla/editor/txtsvc/src/nsTextServicesDocument.cpp mozilla/editor/ui/dialogs/content/EdTableProps.js mozilla/embedding/components/find/src/nsWebBrowserFind.cpp mozilla/extensions/xmlterm/base/mozXMLTermSession.cpp mozilla/layout/base/public/nsIFrameSelection.h mozilla/layout/html/base/src/nsPresShell.cpp mozilla/layout/html/forms/src/nsGfxTextControlFrame2.cpp mozilla/mailnews/compose/src/nsMsgCompose.cpp mozilla/xpfe/browser/resources/content/viewPartialSource.js - Added aIsSynchronous arg to the ScrollSelectionIntoView() method of nsISelectionController and nsIFrameSelection. Updated all callers to pass new arg. - Modified selection to post a plevent to call which does the call to ScrollIntoView() in the async ScrollIntoView() case. - Edits in text widgets now use asynchronous reflow, paint, and scroll processing full time. - Removed redundant ScrollSelectionIntoView() calls in the editor event listeners. - Editor IME code now forced to flush reflows and paints before getting caret coordinates. r=jfrancis@netscape.com sr=waterson@netscape.com
2002-06-14 00:35:12 +04:00
return mSelection->ScrollSelectionIntoView(aType, aRegion, aIsSynchronous);
}
NS_IMETHODIMP
PresShell::RepaintSelection(SelectionType aType)
{
if (!mSelection)
return NS_ERROR_NULL_POINTER;
return mSelection->RepaintSelection(aType);
}
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// Make shell be a document observer
NS_IMETHODIMP
PresShell::BeginObservingDocument()
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{
if (mDocument) {
mDocument->AddObserver(this);
if (mIsDocumentGone) {
NS_WARNING("Adding a presshell that was disconnected from the document "
"as a document observer? Sounds wrong...");
mIsDocumentGone = PR_FALSE;
}
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}
return NS_OK;
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}
// Make shell stop being a document observer
NS_IMETHODIMP
PresShell::EndObservingDocument()
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{
// XXXbz do we need to tell the frame constructor that the document
// is gone, perhaps? Except for printing it's NOT gone, sometimes.
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mIsDocumentGone = PR_TRUE;
if (mDocument) {
mDocument->RemoveObserver(this);
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}
return NS_OK;
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}
#ifdef DEBUG_kipp
char* nsPresShell_ReflowStackPointerTop;
#endif
static void CheckForFocus(nsPIDOMWindow* aOurWindow,
nsIFocusController* aFocusController,
nsIDocument* aDocument)
{
NS_ASSERTION(aOurWindow->IsOuterWindow(),
"Uh, our window has to be an outer window!");
// Now that we have a root frame, we can set focus on the presshell.
// We do this only if our DOM window is currently focused or is an
// an ancestor of a previously focused window.
if (!aFocusController)
return;
nsCOMPtr<nsIDOMWindowInternal> ourWin = do_QueryInterface(aOurWindow);
nsCOMPtr<nsIDOMWindowInternal> focusedWindow;
aFocusController->GetFocusedWindow(getter_AddRefs(focusedWindow));
if (!focusedWindow) {
// This should never really happen, but if it does, assume
// we can focus ourself to keep the window from being keydead.
focusedWindow = ourWin;
}
// Walk up the document chain, starting with focusedWindow's document.
// We stop walking when we find a document that has a null DOMWindow
// (meaning that the DOMWindow has a new document now) or find ourWin
// as the document's window. We also stop if we hit aDocument, since
// that means there is a child document which loaded before us that's
// already been given focus.
nsCOMPtr<nsIDOMDocument> focusedDOMDoc;
focusedWindow->GetDocument(getter_AddRefs(focusedDOMDoc));
nsCOMPtr<nsIDocument> curDoc = do_QueryInterface(focusedDOMDoc);
if (!curDoc) {
// This can happen if the previously focused DOM window has been
// unhooked from its document during document teardown. We don't
2003-06-11 02:17:58 +04:00
// really have any other information to help us determine where
// focusedWindow fits into the DOM window hierarchy. For now, we'll
// go ahead and allow this window to take focus, so that something
// ends up focused.
curDoc = aDocument;
}
while (curDoc) {
nsPIDOMWindow *curWin = curDoc->GetWindow();
if (!curWin || curWin == ourWin)
break;
curDoc = curDoc->GetParentDocument();
if (curDoc == aDocument)
return;
}
if (!curDoc) {
// We reached the top of the document chain, and did not encounter ourWin
// or a windowless document. So, focus should be unaffected by this
// document load.
return;
}
PRBool active;
aFocusController->GetActive(&active);
if (active)
ourWin->Focus();
// We need to ensure that the focus controller is updated, since it may be
// suppressed when this function is called.
aFocusController->SetFocusedWindow(ourWin);
}
NS_IMETHODIMP
PresShell::GetDidInitialReflow(PRBool *aDidInitialReflow)
{
if (!aDidInitialReflow)
return NS_ERROR_FAILURE;
*aDidInitialReflow = mDidInitialReflow;
return NS_OK;
}
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NS_IMETHODIMP
PresShell::InitialReflow(nscoord aWidth, nscoord aHeight)
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{
nsCOMPtr<nsIPresShell> kungFuDeathGrip(this);
mDidInitialReflow = PR_TRUE;
#ifdef NS_DEBUG
if (VERIFY_REFLOW_NOISY_RC & gVerifyReflowFlags) {
if (mDocument) {
nsIURI *uri = mDocument->GetDocumentURI();
if (uri) {
nsCAutoString url;
uri->GetSpec(url);
printf("*** PresShell::InitialReflow (this=%p, url='%s')\n", (void*)this, url.get());
}
}
}
#endif
if (mCaret)
mCaret->EraseCaret();
NS_ASSERTION(mViewManager, "Should have view manager");
// Painting should be suppressed for the initial reflow, so this won't
// really do anything right now, but it will be useful when we
// start batching widget changes
mViewManager->BeginUpdateViewBatch();
WillCauseReflow();
WillDoReflow();
if (mPresContext) {
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nsRect r(0, 0, aWidth, aHeight);
mPresContext->SetVisibleArea(r);
}
nsIContent *root = mDocument ? mDocument->GetRootContent() : nsnull;
// Get the root frame from the frame manager
nsIFrame* rootFrame = FrameManager()->GetRootFrame();
if (root) {
MOZ_TIMER_DEBUGLOG(("Reset and start: Frame Creation: PresShell::InitialReflow(), this=%p\n",
(void*)this));
MOZ_TIMER_RESET(mFrameCreationWatch);
MOZ_TIMER_START(mFrameCreationWatch);
if (!rootFrame) {
// Have style sheet processor construct a frame for the
// precursors to the root content object's frame
mFrameConstructor->ConstructRootFrame(root, &rootFrame);
FrameManager()->SetRootFrame(rootFrame);
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}
// Have the style sheet processor construct frame for the root
// content object down
mFrameConstructor->ContentInserted(nsnull, root, 0,
nsnull, PR_FALSE);
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VERIFY_STYLE_TREE;
MOZ_TIMER_DEBUGLOG(("Stop: Frame Creation: PresShell::InitialReflow(), this=%p\n",
(void*)this));
MOZ_TIMER_STOP(mFrameCreationWatch);
// Something in mFrameConstructor->ContentInserted may have caused
// Destroy() to get called, bug 337586.
NS_ENSURE_STATE(!mHaveShutDown);
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}
if (rootFrame) {
MOZ_TIMER_DEBUGLOG(("Reset and start: Reflow: PresShell::InitialReflow(), this=%p\n",
(void*)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();
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;
AUTO_LAYOUT_PHASE_ENTRY_POINT(GetPresContext(), Reflow);
mIsReflowing = PR_TRUE;
nsHTMLReflowState reflowState(mPresContext, rootFrame,
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eReflowReason_Initial, rcx, maxSize);
rootFrame->WillReflow(mPresContext);
nsContainerFrame::PositionFrameView(rootFrame);
rootFrame->Reflow(mPresContext, desiredSize, reflowState, status);
2003-06-30 14:46:59 +04:00
rootFrame->SetSize(nsSize(desiredSize.width, desiredSize.height));
mPresContext->SetVisibleArea(nsRect(0,0,desiredSize.width,desiredSize.height));
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nsContainerFrame::SyncFrameViewAfterReflow(mPresContext, rootFrame, rootFrame->GetView(),
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", (void*)this));
MOZ_TIMER_STOP(mReflowWatch);
mIsReflowing = PR_FALSE;
}
DidCauseReflow();
DidDoReflow();
mViewManager->EndUpdateViewBatch(NS_VMREFRESH_NO_SYNC);
Fix for bug #15360: Drag Selecting, Clicking, then Clicking leaves caret cruft. r=troy@netscape.com,kipp@netscape.com,evaughan@netscape.com,beard@netscape.com layout/html/base/src/nsGfxScrollFrame.cpp - Renamed all occurrences of ScrollPositionChanged() to to ScrollPositionDidChange() to match changes made to nsIScrollPositionListener. - Added ScrollPositionWillChange() stub method. layout/html/base/src/nsPresShell.cpp - Added PresShellViewEventListener class that implements the nsIScrollPositionListener and nsICompositeListener view interfaces. This allows us to turn caret rendering on and off when scrolling and repainting to prevent leaving caret cruft on the screen. - PresShellViewEventListener is created in InitialReflow(), and released in ~PresShell(). view/public/Makefile.in view/public/makefile.win view/public/MANIFEST - Added nsICompositeListener to list of files to be exported. view/public/nsICompositeListener.h - New file. Implementers of this interface can register themselves with the view manager to receive notification before and after a view is composited/refreshed. view/public/nsIScrollPositionListener.h - Added a ScrollPositionWillChange() method. - Changed ScrollPositionChanged() to ScrollPositionDidChange(). view/public/nsIViewManager.h - Added AddCompositeListener() and RemoveCompositeListener methods. view/src/nsScrollingView.cpp view/src/nsScrollingView.h - Added NotifyScrollPositionWillChange() and NotifyScrollPositionDidChange() methods. - Modified HandleScrollEvent() to call NotifyScrollPositionWill/DidChange() methods. Added temporary offsetX and offsetY variables to allow us to calculate new offsets without changing mOffsetX and mOffsetY before notifications are sent out. view/src/nsScrollPortView.cpp - Changed ScrollPositionChanged() to ScrollPositionDidChange(). - Modified ScrollTo() to call the listener's ScrollPositionWillChange() method. view/src/nsViewManager.cpp view/src/nsViewManager.h - Added AddCompositeListener() and RemoveCompositeListener() methods. - Added support for CompositeListener notifications in the Refresh() methods for regions and rects. - Fix for bug #15901: [DOGFOOD] Selected text does not clear when you type Modified UpdateView() so that rects with zero width and height are no longer added to our damage region. r=beard@netscape.com
1999-10-15 08:29:30 +04:00
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.
if (!mPresContext->IsPaginated()) {
// Kick off a one-shot timer based off our pref value. When this timer
// fires, if painting is still locked down, then we will go ahead and
// trigger a full invalidate and allow painting to proceed normally.
mPaintingSuppressed = PR_TRUE;
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.
// Default to PAINTLOCK_EVENT_DELAY if we can't get the pref value.
PRInt32 delay =
nsContentUtils::GetIntPref("nglayout.initialpaint.delay",
PAINTLOCK_EVENT_DELAY);
mPaintSuppressionTimer->InitWithFuncCallback(sPaintSuppressionCallback,
this, delay,
nsITimer::TYPE_ONE_SHOT);
}
}
return NS_OK; //XXX this needs to be real. MMP
}
void
PresShell::sPaintSuppressionCallback(nsITimer *aTimer, void* aPresShell)
{
PresShell* self = NS_STATIC_CAST(PresShell*, aPresShell);
if (self)
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self->UnsuppressPainting();
}
NS_IMETHODIMP
PresShell::ResizeReflow(nscoord aWidth, nscoord aHeight)
{
PRBool firstReflow = PR_FALSE;
NS_ASSERTION(mViewManager, "Must have view manager");
mViewManager->BeginUpdateViewBatch();
WillCauseReflow();
WillDoReflow();
// If we don't have a root frame yet, that means we haven't had our initial
// reflow... If that's the case, and aWidth or aHeight is unconstrained,
// ignore them altogether.
nsIFrame* rootFrame = FrameManager()->GetRootFrame();
if (!rootFrame &&
(aWidth == NS_UNCONSTRAINEDSIZE || aHeight == NS_UNCONSTRAINEDSIZE)) {
return NS_ERROR_NOT_AVAILABLE;
}
if (mPresContext) {
nsRect r(0, 0, aWidth, aHeight);
mPresContext->SetVisibleArea(r);
}
if (rootFrame) {
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// Kick off a top-down reflow
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NS_FRAME_LOG(NS_FRAME_TRACE_CALLS,
("enter nsPresShell::ResizeReflow: %d,%d", aWidth, aHeight));
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#ifdef NS_DEBUG
if (nsIFrameDebug::GetVerifyTreeEnable()) {
nsIFrameDebug* frameDebug;
if (NS_SUCCEEDED(rootFrame->QueryInterface(NS_GET_IID(nsIFrameDebug),
(void**)&frameDebug))) {
frameDebug->VerifyTree();
}
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}
#endif
#ifdef DEBUG_kipp
nsPresShell_ReflowStackPointerTop = (char*) &aWidth;
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#endif
nsRect bounds = mPresContext->GetVisibleArea();
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;
AUTO_LAYOUT_PHASE_ENTRY_POINT(GetPresContext(), Reflow);
// XXXldb Set mIsReflowing (and unset it later)?
nsHTMLReflowState reflowState(mPresContext, rootFrame,
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eReflowReason_Resize, rcx, maxSize);
rootFrame->WillReflow(mPresContext);
nsContainerFrame::PositionFrameView(rootFrame);
rootFrame->Reflow(mPresContext, desiredSize, reflowState, status);
rootFrame->SetSize(nsSize(desiredSize.width, desiredSize.height));
mPresContext->SetVisibleArea(nsRect(0,0,desiredSize.width,desiredSize.height));
2003-06-30 14:46:59 +04:00
nsContainerFrame::SyncFrameViewAfterReflow(mPresContext, rootFrame, rootFrame->GetView(),
nsnull);
rootFrame->DidReflow(mPresContext, nsnull, NS_FRAME_REFLOW_FINISHED);
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#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);
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NS_FRAME_LOG(NS_FRAME_TRACE_CALLS, ("exit nsPresShell::ResizeReflow"));
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// XXX if debugging then we should assert that the cache is empty
} else {
firstReflow = PR_TRUE;
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#ifdef NOISY
printf("PresShell::ResizeReflow: null root frame\n");
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#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
DidDoReflow();
mViewManager->EndUpdateViewBatch(NS_VMREFRESH_NO_SYNC);
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();
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if (mIsDocumentGone)
return;
mResizeEventTimer = do_CreateInstance("@mozilla.org/timer;1");
if (mResizeEventTimer) {
mResizeEventTimer->InitWithFuncCallback(sResizeEventCallback, this, RESIZE_EVENT_DELAY,
nsITimer::TYPE_ONE_SHOT);
}
}
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()
{
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if (mIsDocumentGone)
return;
//Send resize event from here.
nsEvent event(PR_TRUE, NS_RESIZE_EVENT);
nsEventStatus status = nsEventStatus_eIgnore;
nsPIDOMWindow *window = mDocument->GetWindow();
if (window) {
nsEventDispatcher::Dispatch(window, mPresContext, &event, nsnull, &status);
}
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}
NS_IMETHODIMP
PresShell::SetIgnoreFrameDestruction(PRBool aIgnore)
{
mIgnoreFrameDestruction = aIgnore;
return NS_OK;
}
NS_IMETHODIMP
PresShell::NotifyDestroyingFrame(nsIFrame* aFrame)
{
if (!mIgnoreFrameDestruction) {
mFrameConstructor->NotifyDestroyingFrame(aFrame);
// Cancel any pending reflow commands targeted at this frame
CancelReflowCommandInternal(aFrame, nsnull);
// Notify the frame manager
FrameManager()->NotifyDestroyingFrame(aFrame);
// Remove frame properties
mPresContext->PropertyTable()->DeleteAllPropertiesFor(aFrame);
}
return NS_OK;
}
// note that this can return a null caret, but NS_OK
NS_IMETHODIMP PresShell::GetCaret(nsICaret **outCaret)
{
NS_ENSURE_ARG_POINTER(outCaret);
*outCaret = mCaret;
NS_IF_ADDREF(*outCaret);
return NS_OK;
}
NS_IMETHODIMP_(void) PresShell::MaybeInvalidateCaretPosition()
{
if (mCaret) {
mCaret->InvalidateOutsideCaret();
}
}
already_AddRefed<nsICaret> PresShell::SetCaret(nsICaret *aNewCaret)
{
nsICaret *oldCaret = nsnull;
mCaret.swap(oldCaret);
mCaret = aNewCaret;
return oldCaret;
}
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<nsIDOMSelection> domSel;
if (NS_SUCCEEDED(GetSelection(nsISelectionController::SELECTION_NORMAL, getter_AddRefs(domSel))) && domSel)
mCaret->SetCaretDOMSelection(domSel);
*/
result = mCaret->SetCaretVisible(mCaretEnabled);
}
return result;
}
NS_IMETHODIMP PresShell::SetCaretReadOnly(PRBool aReadOnly)
{
if (mCaret)
mCaret->SetCaretReadOnly(aReadOnly);
return NS_OK;
}
NS_IMETHODIMP PresShell::GetCaretEnabled(PRBool *aOutEnabled)
{
NS_ENSURE_ARG_POINTER(aOutEnabled);
*aOutEnabled = mCaretEnabled;
return NS_OK;
}
NS_IMETHODIMP PresShell::SetCaretVisibilityDuringSelection(PRBool aVisibility)
{
if (mCaret)
mCaret->SetVisibilityDuringSelection(aVisibility);
return NS_OK;
}
NS_IMETHODIMP PresShell::SetSelectionFlags(PRInt16 aInEnable)
{
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mSelectionFlags = aInEnable;
return NS_OK;
}
NS_IMETHODIMP PresShell::GetSelectionFlags(PRInt16 *aOutEnable)
{
if (!aOutEnable)
return NS_ERROR_INVALID_ARG;
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*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::WordExtendForDelete(PRBool aForward)
{
return mSelection->WordExtendForDelete(aForward);
}
NS_IMETHODIMP
PresShell::LineMove(PRBool aForward, PRBool aExtend)
{
nsresult result = mSelection->LineMove(aForward, aExtend);
// if we can't go down/up any more we must then move caret completely to
// end/beginning respectively.
if (NS_FAILED(result))
result = CompleteMove(aForward,aExtend);
return result;
}
NS_IMETHODIMP
PresShell::IntraLineMove(PRBool aForward, PRBool aExtend)
{
return mSelection->IntraLineMove(aForward, aExtend);
}
NS_IMETHODIMP
PresShell::PageMove(PRBool aForward, PRBool aExtend)
{
nsresult result;
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nsIViewManager* viewManager = GetViewManager();
nsIScrollableView *scrollableView;
if (!viewManager)
return NS_ERROR_UNEXPECTED;
result = viewManager->GetRootScrollableView(&scrollableView);
if (NS_FAILED(result))
return result;
if (!scrollableView)
return NS_ERROR_UNEXPECTED;
nsIView *scrolledView;
result = scrollableView->GetScrolledView(scrolledView);
mSelection->CommonPageMove(aForward, aExtend, scrollableView);
// do ScrollSelectionIntoView()
return ScrollSelectionIntoView(nsISelectionController::SELECTION_NORMAL, nsISelectionController::SELECTION_FOCUS_REGION, PR_TRUE);
}
NS_IMETHODIMP
PresShell::ScrollPage(PRBool aForward)
{
nsIScrollableView* scrollView = GetViewToScroll(nsLayoutUtils::eVertical);
if (scrollView) {
scrollView->ScrollByPages(0, aForward ? 1 : -1);
}
return NS_OK;
}
NS_IMETHODIMP
PresShell::ScrollLine(PRBool aForward)
{
nsIScrollableView* scrollView = GetViewToScroll(nsLayoutUtils::eVertical);
if (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();
nsIViewManager* viewManager = GetViewManager();
if (viewManager) {
viewManager->ForceUpdate();
}
}
return NS_OK;
}
NS_IMETHODIMP
PresShell::ScrollHorizontal(PRBool aLeft)
{
nsIScrollableView* scrollView = GetViewToScroll(nsLayoutUtils::eHorizontal);
if (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();
nsIViewManager* viewManager = GetViewManager();
if (viewManager) {
viewManager->ForceUpdate();
}
}
return NS_OK;
}
NS_IMETHODIMP
PresShell::CompleteScroll(PRBool aForward)
{
nsIScrollableView* scrollView = GetViewToScroll(nsLayoutUtils::eVertical);
if (scrollView) {
scrollView->ScrollByWhole(!aForward);//TRUE = top, aForward TRUE=bottom
}
return NS_OK;
}
NS_IMETHODIMP
PresShell::CompleteMove(PRBool aForward, PRBool aExtend)
{
nsIScrollableView *scrollableView;
if (!mViewManager)
return NS_ERROR_UNEXPECTED;
nsresult result = mViewManager->GetRootScrollableView(&scrollableView);
if (NS_FAILED(result))
return result;
if (!scrollableView)
return NS_ERROR_UNEXPECTED;
nsIView *scrolledView;
result = scrollableView->GetScrolledView(scrolledView);
// get a frame
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nsIFrame *frame = (nsIFrame*)scrolledView->GetClientData();
if (!frame)
return NS_ERROR_FAILURE;
//we need to get to the area frame.
nsIAtom* frameType;
do
{
frameType = frame->GetType();
if (frameType != nsLayoutAtoms::areaFrame)
{
frame = frame->GetFirstChild(nsnull);
if (!frame)
break;
}
}while(frameType != nsLayoutAtoms::areaFrame);
if (!frame)
return NS_ERROR_FAILURE; //could not find an area frame.
nsPeekOffsetStruct pos = frame->GetExtremeCaretPosition(!aForward);
mSelection->HandleClick(pos.mResultContent ,pos.mContentOffset ,pos.mContentOffset/*End*/ ,aExtend, PR_FALSE, aForward);
return ScrollSelectionIntoView(nsISelectionController::SELECTION_NORMAL, nsISelectionController::SELECTION_FOCUS_REGION, PR_TRUE);
}
NS_IMETHODIMP
PresShell::SelectAll()
{
return mSelection->SelectAll();
}
NS_IMETHODIMP
PresShell::CheckVisibility(nsIDOMNode *node, PRInt16 startOffset, PRInt16 EndOffset, PRBool *_retval)
{
if (!node || startOffset>EndOffset || !_retval || startOffset<0 || EndOffset<0)
return NS_ERROR_INVALID_ARG;
*_retval = PR_FALSE; //initialize return parameter
nsCOMPtr<nsIContent> content(do_QueryInterface(node));
if (!content)
return NS_ERROR_FAILURE;
nsIFrame *frame = GetPrimaryFrameFor(content);
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
static void UpdateViewProperties(nsPresContext* aPresContext, nsIViewManager* aVM,
nsIView* aView) {
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nsIViewManager* thisVM = aView->GetViewManager();
if (thisVM != aVM) {
return;
}
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nsIFrame* frame = NS_STATIC_CAST(nsIFrame*, aView->GetClientData());
if (frame) {
nsContainerFrame::SyncFrameViewProperties(aPresContext, frame, nsnull, aView);
}
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for (nsIView* child = aView->GetFirstChild(); child;
child = child->GetNextSibling()) {
UpdateViewProperties(aPresContext, aVM, child);
}
}
NS_IMETHODIMP
PresShell::StyleChangeReflow()
{
WillCauseReflow();
WillDoReflow();
nsIFrame* rootFrame = FrameManager()->GetRootFrame();
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();
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;
AUTO_LAYOUT_PHASE_ENTRY_POINT(GetPresContext(), Reflow);
// XXXldb Set mIsReflowing (and unset it later)?
nsHTMLReflowState reflowState(mPresContext, rootFrame,
eReflowReason_StyleChange, rcx, maxSize);
rootFrame->WillReflow(mPresContext);
nsContainerFrame::PositionFrameView(rootFrame);
rootFrame->Reflow(mPresContext, desiredSize, reflowState, status);
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rootFrame->SetSize(nsSize(desiredSize.width, desiredSize.height));
mPresContext->SetVisibleArea(nsRect(0,0,desiredSize.width,desiredSize.height));
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nsIView* view = rootFrame->GetView();
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"));
// The following two calls are needed to make sure we reacquire any needed
// style structs that were cleared by the caller
// Update properties of all views to reflect style changes
UpdateViewProperties(mPresContext, mViewManager, view);
// Repaint everything just to be sure
mViewManager->UpdateAllViews(NS_VMREFRESH_NO_SYNC);
}
DidCauseReflow();
DidDoReflow();
return NS_OK; //XXX this needs to be real. MMP
}
nsIFrame*
nsIPresShell::GetRootFrame() const
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{
return FrameManager()->GetRootFrame();
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}
nsIFrame*
nsIPresShell::GetRootScrollFrame() const
{
nsIFrame* rootFrame = FrameManager()->GetRootFrame();
// Ensure root frame is a viewport frame
if (!rootFrame || nsLayoutAtoms::viewportFrame != rootFrame->GetType())
return nsnull;
nsIFrame* theFrame = rootFrame->GetFirstChild(nsnull);
if (!theFrame || nsLayoutAtoms::scrollFrame != theFrame->GetType())
return nsnull;
return theFrame;
}
NS_IMETHODIMP
PresShell::GetPageSequenceFrame(nsIPageSequenceFrame** aResult) const
{
NS_PRECONDITION(nsnull != aResult, "null ptr");
if (nsnull == aResult) {
return NS_ERROR_NULL_POINTER;
}
*aResult = nsnull;
nsIFrame* frame = mFrameConstructor->GetPageSequenceFrame();
if (frame) {
CallQueryInterface(frame, aResult);
}
return *aResult ? NS_OK : NS_ERROR_FAILURE;
}
void
PresShell::BeginUpdate(nsIDocument *aDocument, nsUpdateType aUpdateType)
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{
#ifdef DEBUG
mUpdateCount++;
#endif
mFrameConstructor->BeginUpdate();
if (aUpdateType & UPDATE_STYLE)
mStyleSet->BeginUpdate();
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}
void
PresShell::EndUpdate(nsIDocument *aDocument, nsUpdateType aUpdateType)
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{
#ifdef DEBUG
NS_PRECONDITION(0 != mUpdateCount, "too many EndUpdate's");
--mUpdateCount;
#endif
if (aUpdateType & UPDATE_STYLE) {
mStyleSet->EndUpdate();
if (mStylesHaveChanged)
ReconstructStyleData();
}
mFrameConstructor->EndUpdate();
}
void
PresShell::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", (void*)this));
#endif
mDocumentLoading = PR_TRUE;
}
void
PresShell::EndLoad(nsIDocument *aDocument)
{
// Restore frame state for the root scroll frame
nsCOMPtr<nsILayoutHistoryState> historyState =
aDocument->GetLayoutHistoryState();
// Make sure we don't reenter reflow via the sync paint that happens while
// we're scrolling to our restored position. Entering reflow for the
// scrollable frame will cause it to reenter ScrollToRestoredPosition(), and
// it'll get all confused.
++mChangeNestCount;
if (historyState) {
nsIFrame* scrollFrame = GetRootScrollFrame();
if (scrollFrame) {
nsIScrollableFrame* scrollableFrame;
CallQueryInterface(scrollFrame, &scrollableFrame);
if (scrollableFrame) {
FrameManager()->RestoreFrameStateFor(scrollFrame, historyState,
nsIStatefulFrame::eDocumentScrollState);
scrollableFrame->ScrollToRestoredPosition();
}
}
}
--mChangeNestCount;
#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));
#endif
mDocumentLoading = PR_FALSE;
}
// 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)
{
if (!mReflowCommandTable.ops) {
// We're already destroyed
NS_ERROR("We really shouldn't be posting reflow commands here");
}
ReflowCommandEntry* e =
NS_STATIC_CAST(ReflowCommandEntry*,
PL_DHashTableOperate(&mReflowCommandTable, aReflowCommand,
PL_DHASH_ADD));
if (!e) {
// We lie no matter what we say here
return PR_FALSE;
}
// We're using the stub ClearEntry, which zeros out entries, so a
// non-null mCommand means we're in the queue already.
if (e->mCommand) {
#ifdef DEBUG
if (VERIFY_REFLOW_NOISY_RC & gVerifyReflowFlags) {
printf("*** PresShell::AlreadyInQueue(): Discarding reflow command: this=%p\n", (void*)this);
aReflowCommand->List(stdout);
}
#endif
return PR_TRUE;
}
e->mCommand = aReflowCommand;
return PR_FALSE;
}
NS_IMETHODIMP
PresShell::AppendReflowCommand(nsIFrame* aTargetFrame,
nsReflowType aReflowType,
nsIAtom* aChildListName)
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{
// If we've not yet done the initial reflow, then don't bother
// enqueuing a reflow command yet.
if (! mDidInitialReflow)
return NS_OK;
// If we're already destroying, don't bother with this either.
if (mIsDestroying)
return NS_OK;
#ifdef DEBUG
//printf("gShellCounter: %d\n", gShellCounter++);
if (mInVerifyReflow) {
return NS_OK;
}
#endif
nsHTMLReflowCommand* command = new nsHTMLReflowCommand(aTargetFrame,
aReflowType,
aChildListName);
if (!command) {
return NS_ERROR_OUT_OF_MEMORY;
}
#ifdef DEBUG
if (VERIFY_REFLOW_NOISY_RC & gVerifyReflowFlags) {
printf("\nPresShell@%p: adding reflow command\n", (void*)this);
command->List(stdout);
if (VERIFY_REFLOW_REALLY_NOISY_RC & gVerifyReflowFlags) {
printf("Current content model:\n");
nsIContent *rootContent = mDocument->GetRootContent();
if (rootContent) {
rootContent->List(stdout, 0);
}
}
}
#endif
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// Add the reflow command to the queue
nsresult rv = NS_OK;
if (!AlreadyInQueue(command)) {
if (mReflowCommands.AppendElement(command)) {
ReflowCommandAdded(command);
} else {
// Drop this command.... we're out of memory
PL_DHashTableOperate(&mReflowCommandTable, command,
PL_DHASH_REMOVE);
delete command;
rv = NS_ERROR_OUT_OF_MEMORY;
}
}
else {
// We're not going to process this reflow command.
delete command;
}
// Post a reflow event if we are not batching reflow commands.
if (!mBatchReflows) {
// 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).
// XXXbz but how does this actually "process it right away"?
// Isn't this more like "never process it"?
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if ( !IsDragInProgress() )
PostReflowEvent();
}
return rv;
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}
//
// 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<nsIDragSession> session;
mDragService->GetCurrentSession ( getter_AddRefs(session) );
if ( session )
dragInProgress = PR_TRUE;
}
return dragInProgress;
} // IsDragInProgress
nsIScrollableView*
PresShell::GetViewToScroll(nsLayoutUtils::Direction aDirection)
{
nsCOMPtr<nsIEventStateManager> esm = mPresContext->EventStateManager();
nsIScrollableView* scrollView = nsnull;
nsCOMPtr<nsIContent> focusedContent;
esm->GetFocusedContent(getter_AddRefs(focusedContent));
if (!focusedContent && mSelection) {
nsISelection* domSelection = mSelection->
GetSelection(nsISelectionController::SELECTION_NORMAL);
if (domSelection) {
nsCOMPtr<nsIDOMNode> focusedNode;
domSelection->GetFocusNode(getter_AddRefs(focusedNode));
focusedContent = do_QueryInterface(focusedNode);
}
}
if (focusedContent) {
nsIFrame* startFrame = GetPrimaryFrameFor(focusedContent);
if (startFrame) {
nsCOMPtr<nsIScrollableViewProvider> svp = do_QueryInterface(startFrame);
// If this very frame provides a scroll view, start there instead of frame's
// closest view, because the scroll view may be inside a child frame.
// For example, this happens in the case of overflow:scroll.
// In that case we still use GetNearestScrollingView() because
// we need a scrolling view that matches aDirection.
nsIScrollableView* sv;
nsIView* startView = svp && (sv = svp->GetScrollableView()) ? sv->View() : startFrame->GetClosestView();
NS_ASSERTION(startView, "No view to start searching for scrollable view from");
scrollView = nsLayoutUtils::GetNearestScrollingView(startView, aDirection);
}
}
if (!scrollView) {
nsIViewManager* viewManager = GetViewManager();
if (viewManager) {
viewManager->GetRootScrollableView(&scrollView);
}
}
return scrollView;
}
void
PresShell::CancelReflowCommandInternal(nsIFrame* aTargetFrame,
nsReflowType* aCmdType)
{
PRInt32 i, n = mReflowCommands.Count();
for (i = 0; i < n; i++) {
nsHTMLReflowCommand* rc = (nsHTMLReflowCommand*) mReflowCommands.ElementAt(i);
if (rc && rc->GetTarget() == aTargetFrame &&
(!aCmdType || rc->Type() == *aCmdType)) {
#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--;
}
}
DoneRemovingReflowCommands();
}
NS_IMETHODIMP
PresShell::CancelReflowCommand(nsIFrame* aTargetFrame,
nsReflowType* aCmdType)
{
CancelReflowCommandInternal(aTargetFrame, aCmdType);
return NS_OK;
}
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;
}
#ifdef ACCESSIBILITY
void nsIPresShell::InvalidateAccessibleSubtree(nsIContent *aContent)
{
if (mIsAccessibilityActive) {
nsCOMPtr<nsIAccessibilityService> accService =
do_GetService("@mozilla.org/accessibilityService;1");
if (accService) {
accService->InvalidateSubtreeFor(this, aContent,
nsIAccessibleEvent::EVENT_REORDER);
}
}
}
#endif
NS_IMETHODIMP
PresShell::RecreateFramesFor(nsIContent* aContent)
{
NS_ENSURE_TRUE(mPresContext, NS_ERROR_FAILURE);
// Don't call RecreateFramesForContent since that is not exported and we want
// to keep the number of entrypoints down.
NS_ASSERTION(mViewManager, "Should have view manager");
mViewManager->BeginUpdateViewBatch();
// Have to make sure that the content notifications are flushed before we
// start messing with the frame model; otherwise we can get content doubling.
mDocument->FlushPendingNotifications(Flush_ContentAndNotify);
nsStyleChangeList changeList;
changeList.AppendChange(nsnull, aContent, nsChangeHint_ReconstructFrame);
nsresult rv = mFrameConstructor->ProcessRestyledFrames(changeList);
mViewManager->EndUpdateViewBatch(NS_VMREFRESH_NO_SYNC);
#ifdef ACCESSIBILITY
InvalidateAccessibleSubtree(aContent);
#endif
return rv;
}
NS_IMETHODIMP
PresShell::ClearFrameRefs(nsIFrame* aFrame)
{
mPresContext->EventStateManager()->ClearFrameRefs(aFrame);
if (aFrame == mCurrentEventFrame) {
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mCurrentEventContent = aFrame->GetContent();
mCurrentEventFrame = nsnull;
}
for (int i=0; i<mCurrentEventFrameStack.Count(); i++) {
if (aFrame == (nsIFrame*)mCurrentEventFrameStack.ElementAt(i)) {
//One of our stack frames was deleted. Get its content so that when we
//pop it we can still get its new frame from its content
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nsIContent *currentEventContent = aFrame->GetContent();
mCurrentEventContentStack.ReplaceObjectAt(currentEventContent, i);
mCurrentEventFrameStack.ReplaceElementAt(nsnull, i);
}
}
nsWeakFrame* weakFrame = mWeakFrames;
while (weakFrame) {
nsWeakFrame* prev = weakFrame->GetPreviousWeakFrame();
if (weakFrame->GetFrame() == aFrame) {
// This removes weakFrame from mWeakFrames.
weakFrame->Clear(this);
}
weakFrame = prev;
}
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;
}
nsIWidget* widget = nsnull;
// Never pass a widget to a print rendering context
if (mPresContext->IsScreen())
widget = aFrame->GetWindow();
nsresult rv;
nsIRenderingContext* result = nsnull;
nsIDeviceContext *deviceContext = mPresContext->DeviceContext();
if (widget) {
rv = deviceContext->CreateRenderingContext(widget, result);
}
else {
rv = deviceContext->CreateRenderingContext(result);
}
*aResult = result;
return rv;
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}
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NS_IMETHODIMP
PresShell::GoToAnchor(const nsAString& aAnchorName, PRBool aScroll)
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{
if (!mDocument) {
return NS_ERROR_FAILURE;
}
// Hold a reference to the ESM in case event dispatch tears us down.
nsCOMPtr<nsIEventStateManager> esm = mPresContext->EventStateManager();
if (aAnchorName.IsEmpty()) {
NS_ASSERTION(!aScroll, "can't scroll to empty anchor name");
esm->SetContentState(nsnull, NS_EVENT_STATE_URLTARGET);
return NS_OK;
}
nsCOMPtr<nsIDOMDocument> doc = do_QueryInterface(mDocument);
nsCOMPtr<nsIDOMHTMLDocument> htmlDoc = do_QueryInterface(mDocument);
nsresult rv = NS_OK;
nsCOMPtr<nsIContent> content;
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// Search for an element with a matching "id" attribute
if (doc) {
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nsCOMPtr<nsIDOMElement> element;
rv = doc->GetElementById(aAnchorName, getter_AddRefs(element));
if (NS_SUCCEEDED(rv) && element) {
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// Get the nsIContent interface, because that's what we need to
// get the primary frame
content = do_QueryInterface(element);
}
}
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// Search for an anchor element with a matching "name" attribute
if (!content && htmlDoc) {
nsCOMPtr<nsIDOMNodeList> list;
// Find a matching list of named nodes
rv = htmlDoc->GetElementsByName(aAnchorName, getter_AddRefs(list));
if (NS_SUCCEEDED(rv) && list) {
PRUint32 i;
// Loop through the named nodes looking for the first anchor
for (i = 0; PR_TRUE; i++) {
nsCOMPtr<nsIDOMNode> node;
rv = list->Item(i, getter_AddRefs(node));
if (!node) { // End of list
break;
}
// Ensure it's an anchor element
content = do_QueryInterface(node);
if (content) {
if (content->Tag() == nsHTMLAtoms::a &&
content->IsNodeOfType(nsINode::eHTML)) {
break;
}
content = nsnull;
}
}
}
}
// Search for anchor in the HTML namespace with a matching name
if (!content && !htmlDoc)
{
nsCOMPtr<nsIDOMNodeList> list;
NS_NAMED_LITERAL_STRING(nameSpace, "http://www.w3.org/1999/xhtml");
// Get the list of anchor elements
rv = doc->GetElementsByTagNameNS(nameSpace, NS_LITERAL_STRING("a"), getter_AddRefs(list));
if (NS_SUCCEEDED(rv) && list) {
PRUint32 i;
// Loop through the named nodes looking for the first anchor
for (i = 0; PR_TRUE; i++) {
nsCOMPtr<nsIDOMNode> node;
rv = list->Item(i, getter_AddRefs(node));
if (!node) { // End of list
break;
}
// Compare the name attribute
nsCOMPtr<nsIDOMElement> element = do_QueryInterface(node);
nsAutoString value;
if (element && NS_SUCCEEDED(element->GetAttribute(NS_LITERAL_STRING("name"), value))) {
if (value.Equals(aAnchorName)) {
content = do_QueryInterface(element);
break;
}
}
}
}
}
nsCOMPtr<nsIDOMRange> jumpToRange;
nsCOMPtr<nsIXPointerResult> xpointerResult;
if (!content) {
nsCOMPtr<nsIDOMXMLDocument> xmldoc = do_QueryInterface(mDocument);
if (xmldoc) {
// Try XPointer
xmldoc->EvaluateXPointer(aAnchorName, getter_AddRefs(xpointerResult));
if (xpointerResult) {
xpointerResult->Item(0, getter_AddRefs(jumpToRange));
if (!jumpToRange) {
// We know it was an XPointer, so there is no point in
// trying any other pointer types, let's just return
// an error.
return NS_ERROR_FAILURE;
}
}
// Finally try FIXptr
if (!jumpToRange) {
xmldoc->EvaluateFIXptr(aAnchorName,getter_AddRefs(jumpToRange));
}
if (jumpToRange) {
nsCOMPtr<nsIDOMNode> node;
jumpToRange->GetStartContainer(getter_AddRefs(node));
if (node) {
PRUint16 nodeType;
node->GetNodeType(&nodeType);
PRInt32 offset = -1;
jumpToRange->GetStartOffset(&offset);
switch (nodeType) {
case nsIDOMNode::ATTRIBUTE_NODE:
{
// XXX Assuming jumping to the ownerElement is the sanest action.
nsCOMPtr<nsIAttribute> attr = do_QueryInterface(node);
content = attr->GetContent();
break;
}
case nsIDOMNode::DOCUMENT_NODE:
{
if (offset >= 0) {
nsCOMPtr<nsIDocument> document = do_QueryInterface(node);
content = document->GetChildAt(offset);
}
break;
}
case nsIDOMNode::DOCUMENT_FRAGMENT_NODE:
case nsIDOMNode::ELEMENT_NODE:
case nsIDOMNode::ENTITY_REFERENCE_NODE:
{
if (offset >= 0) {
nsCOMPtr<nsIContent> parent = do_QueryInterface(node);
content = parent->GetChildAt(offset);
}
break;
}
case nsIDOMNode::CDATA_SECTION_NODE:
case nsIDOMNode::COMMENT_NODE:
case nsIDOMNode::TEXT_NODE:
case nsIDOMNode::PROCESSING_INSTRUCTION_NODE:
{
// XXX This should scroll to a specific position in the text.
content = do_QueryInterface(node);
break;
}
}
}
}
}
}
esm->SetContentState(content, NS_EVENT_STATE_URLTARGET);
if (content) {
// Flush notifications so we scroll to the right place
if (aScroll) {
mDocument->FlushPendingNotifications(Flush_Layout);
// Get the primary frame
nsIFrame* frame = GetPrimaryFrameFor(content);
NS_ENSURE_TRUE(frame, NS_ERROR_FAILURE);
rv = ScrollFrameIntoView(frame, NS_PRESSHELL_SCROLL_TOP,
NS_PRESSHELL_SCROLL_ANYWHERE);
NS_ENSURE_SUCCESS(rv, rv);
}
// Should we select the target? This action is controlled by a
// preference: the default is to not select.
PRBool selectAnchor = nsContentUtils::GetBoolPref("layout.selectanchor");
// Even if select anchor pref is false, we must still move the
// caret there. That way tabbing will start from the new
// location
if (!jumpToRange) {
jumpToRange = do_CreateInstance(kRangeCID);
if (jumpToRange) {
while (content && content->GetChildCount() > 0) {
content = content->GetChildAt(0);
}
nsCOMPtr<nsIDOMNode> node(do_QueryInterface(content));
NS_ASSERTION(node, "No nsIDOMNode for descendant of anchor");
jumpToRange->SelectNodeContents(node);
}
}
if (jumpToRange) {
// Select the anchor
nsISelection* sel = mSelection->
GetSelection(nsISelectionController::SELECTION_NORMAL);
if (sel) {
sel->RemoveAllRanges();
sel->AddRange(jumpToRange);
if (!selectAnchor) {
// Use a caret (collapsed selection) at the start of the anchor
sel->CollapseToStart();
}
}
if (selectAnchor && xpointerResult) {
// Select the rest (if any) of the ranges in XPointerResult
PRUint32 count, i;
xpointerResult->GetLength(&count);
for (i = 1; i < count; i++) { // jumpToRange is i = 0
nsCOMPtr<nsIDOMRange> range;
xpointerResult->Item(i, getter_AddRefs(range));
sel->AddRange(range);
}
}
// Selection is at anchor.
// Now focus the document itself if focus is on an element within it.
nsPIDOMWindow *win = mDocument->GetWindow();
if (win) {
nsCOMPtr<nsIFocusController> focusController = win->GetRootFocusController();
if (focusController) {
nsCOMPtr<nsIDOMWindowInternal> focusedWin;
focusController->GetFocusedWindow(getter_AddRefs(focusedWin));
if (SameCOMIdentity(win, focusedWin)) {
esm->ChangeFocusWith(nsnull, nsIEventStateManager::eEventFocusedByApplication);
}
}
}
1999-02-12 08:39:33 +03:00
}
} else {
rv = NS_ERROR_FAILURE; //changed to NS_OK in quirks mode if ScrollTo is called
// Scroll to the top/left if the anchor can not be
// found and it is labelled top (quirks mode only). @see bug 80784
if ((NS_LossyConvertUTF16toASCII(aAnchorName).LowerCaseEqualsLiteral("top")) &&
(mPresContext->CompatibilityMode() == eCompatibility_NavQuirks)) {
rv = NS_OK;
// Check |aScroll| after setting |rv| so we set |rv| to the same
// thing whether or not |aScroll| is true.
if (aScroll && 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);
}
}
}
1999-02-12 08:39:33 +03:00
}
return rv;
}
/**
* This function takes a scrolling view, a rect, and a scroll position and
* attempts to scroll that rect to that position in that view. The rect
* should be in the coordinate system of the _scrolled_ view.
*/
static void ScrollViewToShowRect(nsIScrollableView* aScrollingView,
nsRect & aRect,
PRIntn aVPercent,
PRIntn aHPercent)
{
// Determine the visible rect in the scrolling view's coordinate space.
// The size of the visible area is the clip view size
nsRect visibleRect = aScrollingView->View()->GetBounds(); // get width and height
aScrollingView->GetScrollPosition(visibleRect.x, visibleRect.y);
// The actual scroll offsets
nscoord scrollOffsetX = visibleRect.x;
nscoord scrollOffsetY = visibleRect.y;
nscoord lineHeight;
aScrollingView->GetLineHeight(&lineHeight);
// See how the rect 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 (aRect.y < visibleRect.y) {
// Scroll up so the frame's top edge is visible
scrollOffsetY = aRect.y;
} else if (aRect.YMost() > visibleRect.YMost()) {
// Scroll down so the frame's bottom edge is visible. Make sure the
// frame's top edge is still visible
scrollOffsetY += aRect.YMost() - visibleRect.YMost();
if (scrollOffsetY > aRect.y) {
scrollOffsetY = aRect.y;
}
}
} else if (NS_PRESSHELL_SCROLL_IF_NOT_VISIBLE == aVPercent) {
// Scroll only if no part of the frame is visible in this view
if (aRect.YMost() - lineHeight < visibleRect.y) {
// Scroll up so the frame's top edge is visible
scrollOffsetY = aRect.y;
} else if (aRect.y + lineHeight > visibleRect.YMost()) {
// Scroll down so the frame's bottom edge is visible. Make sure the
// frame's top edge is still visible
scrollOffsetY += aRect.YMost() - visibleRect.YMost();
if (scrollOffsetY > aRect.y) {
scrollOffsetY = aRect.y;
}
}
} else {
// Align the frame edge according to the specified percentage
nscoord frameAlignY =
NSToCoordRound(aRect.y + aRect.height * (aVPercent / 100.0f));
scrollOffsetY =
NSToCoordRound(frameAlignY - visibleRect.height * (aVPercent / 100.0f));
}
// 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 (aRect.x < visibleRect.x) {
// Scroll left so the frame's left edge is visible
scrollOffsetX = aRect.x;
} else if (aRect.XMost() > visibleRect.XMost()) {
// Scroll right so the frame's right edge is visible. Make sure the
// frame's left edge is still visible
scrollOffsetX += aRect.XMost() - visibleRect.XMost();
if (scrollOffsetX > aRect.x) {
scrollOffsetX = aRect.x;
}
}
} else if (NS_PRESSHELL_SCROLL_IF_NOT_VISIBLE == aHPercent) {
// Scroll only if no part of the frame is visible in this view
// XXXbz using the line height here is odd, but there are no
// natural dimensions to use here, really....
if (aRect.XMost() - lineHeight < visibleRect.x) {
// Scroll left so the frame's left edge is visible
scrollOffsetX = aRect.x;
} else if (aRect.x + lineHeight > visibleRect.XMost()) {
// Scroll right so the frame's right edge is visible. Make sure the
// frame's left edge is still visible
scrollOffsetX += aRect.XMost() - visibleRect.XMost();
if (scrollOffsetX > aRect.x) {
scrollOffsetX = aRect.x;
}
}
} else {
// Align the frame edge according to the specified percentage
nscoord frameAlignX =
NSToCoordRound(aRect.x + (aRect.width) * (aHPercent / 100.0f));
scrollOffsetX =
NSToCoordRound(frameAlignX - visibleRect.width * (aHPercent / 100.0f));
}
aScrollingView->ScrollTo(scrollOffsetX, scrollOffsetY,
NS_VMREFRESH_IMMEDIATE);
}
NS_IMETHODIMP
PresShell::ScrollFrameIntoView(nsIFrame *aFrame,
PRIntn aVPercent,
PRIntn aHPercent) const
{
if (!aFrame) {
return NS_ERROR_NULL_POINTER;
}
2000-11-04 11:21:20 +03:00
// 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.
2003-06-30 14:46:59 +04:00
nsIContent* content = aFrame->GetContent();
if (content) {
nsIDocument* document = content->GetDocument();
if (document){
nsPIDOMWindow *ourWindow = document->GetWindow();
if(ourWindow) {
nsIFocusController *focusController =
ourWindow->GetRootFocusController();
2000-11-04 11:21:20 +03:00
if (focusController) {
PRBool dontScroll;
focusController->GetSuppressFocusScroll(&dontScroll);
if(dontScroll)
return NS_OK;
}
}
}
}
2000-11-04 11:21:20 +03:00
// Flush out pending reflows to make sure we scroll to the right place
mDocument->FlushPendingNotifications(Flush_OnlyReflow);
// This is a two-step process.
// Step 1: Find the bounds of the rect we want to scroll into view. For
// example, for an inline frame we may want to scroll in the whole
// line.
// Step 2: Walk the views that are parents of the frame and scroll them
// appropriately.
2003-06-30 14:46:59 +04:00
nsRect frameBounds = aFrame->GetRect();
nsPoint offset;
nsIView* closestView;
aFrame->GetOffsetFromView(offset, &closestView);
frameBounds.MoveTo(offset);
// If this is an inline frame and either the bounds height is 0 (quirks
// layout model) or aVPercent is not NS_PRESSHELL_SCROLL_ANYWHERE, we need to
// change the top of the bounds to include the whole line.
if (frameBounds.height == 0 || aVPercent != NS_PRESSHELL_SCROLL_ANYWHERE) {
nsIAtom* frameType = NULL;
nsIFrame *prevFrame = aFrame;
nsIFrame *frame = aFrame;
while (frame &&
(frameType = frame->GetType()) == nsLayoutAtoms::inlineFrame) {
prevFrame = frame;
frame = prevFrame->GetParent();
}
if (frame != aFrame &&
frame &&
frameType == nsLayoutAtoms::blockFrame) {
// find the line containing aFrame and increase the top of |offset|.
nsCOMPtr<nsILineIterator> 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(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 < frameBounds.y)
frameBounds.y = newoffset;
}
}
}
}
}
}
NS_ASSERTION(closestView && !closestView->ToScrollableView(),
"What happened to the scrolled view? "
"The frame should not be directly in the scrolling view!");
// Walk up the view hierarchy. Make sure to add the view's position
// _after_ we get the parent and see whether it's scrollable. We want to
// make sure to get the scrolled view's position after it has been scrolled.
nsIScrollableView* scrollingView = nsnull;
while (closestView) {
2003-06-30 14:46:59 +04:00
nsIView* parent = closestView->GetParent();
if (parent) {
scrollingView = parent->ToScrollableView();
if (scrollingView) {
ScrollViewToShowRect(scrollingView, frameBounds, aVPercent, aHPercent);
}
}
2003-06-30 14:46:59 +04:00
frameBounds += closestView->GetPosition();;
closestView = parent;
}
return NS_OK;
}
// 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<nsIDOMHTMLAnchorElement> anchor(do_QueryInterface(aNode));
nsCOMPtr<nsIDOMHTMLAreaElement> area;
nsCOMPtr<nsIDOMHTMLLinkElement> link;
nsAutoString xlinkType;
if (anchor) {
rv = anchor->GetHref(anchorText);
NS_ENSURE_SUCCESS(rv, rv);
} else {
// area?
area = do_QueryInterface(aNode);
if (area) {
rv = area->GetHref(anchorText);
NS_ENSURE_SUCCESS(rv, rv);
} else {
// link?
link = do_QueryInterface(aNode);
if (link) {
rv = link->GetHref(anchorText);
NS_ENSURE_SUCCESS(rv, rv);
} else {
// Xlink?
nsCOMPtr<nsIDOMElement> element(do_QueryInterface(aNode));
if (element) {
NS_NAMED_LITERAL_STRING(xlinkNS,"http://www.w3.org/1999/xlink");
element->GetAttributeNS(xlinkNS,NS_LITERAL_STRING("type"),xlinkType);
if (xlinkType.EqualsLiteral("simple")) {
element->GetAttributeNS(xlinkNS,NS_LITERAL_STRING("href"),anchorText);
if (!anchorText.IsEmpty()) {
// Resolve the full URI using baseURI property
nsAutoString base;
nsCOMPtr<nsIDOM3Node> node(do_QueryInterface(aNode,&rv));
NS_ENSURE_SUCCESS(rv, rv);
node->GetBaseURI(base);
nsCOMPtr<nsIIOService>
ios(do_GetService("@mozilla.org/network/io-service;1", &rv));
NS_ENSURE_SUCCESS(rv, rv);
nsCOMPtr<nsIURI> baseURI;
rv = ios->NewURI(NS_ConvertUTF16toUTF8(base),nsnull,nsnull,getter_AddRefs(baseURI));
NS_ENSURE_SUCCESS(rv, rv);
nsCAutoString spec;
rv = baseURI->Resolve(NS_ConvertUTF16toUTF8(anchorText),spec);
NS_ENSURE_SUCCESS(rv, rv);
CopyUTF8toUTF16(spec, anchorText);
}
}
}
}
}
}
if (anchor || area || link || xlinkType.EqualsLiteral("simple")) {
//Remove all the '\t', '\r' and '\n' from 'anchorText'
anchorText.StripChars(strippedChars);
aLocationString = anchorText;
return NS_OK;
}
// if no link, fail.
return NS_ERROR_FAILURE;
}
NS_IMETHODIMP
PresShell::GetSelectionForCopy(nsISelection** outSelection)
{
nsresult rv;
*outSelection = nsnull;
if (!mDocument) return NS_ERROR_FAILURE;
nsCOMPtr<nsIContent> content;
nsPIDOMWindow *ourWindow = mDocument->GetWindow();
if (ourWindow) {
nsIFocusController *focusController = ourWindow->GetRootFocusController();
if (focusController) {
nsCOMPtr<nsIDOMElement> focusedElement;
focusController->GetFocusedElement(getter_AddRefs(focusedElement));
content = do_QueryInterface(focusedElement);
}
}
nsCOMPtr<nsISelection> sel;
if (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<nsIDOMNSHTMLInputElement> htmlInputElement(do_QueryInterface(content));
nsCOMPtr<nsIDOMNSHTMLTextAreaElement> htmlTextAreaElement(do_QueryInterface(content));
if (htmlInputElement || htmlTextAreaElement)
{
nsIFrame *htmlInputFrame = GetPrimaryFrameFor(content);
if (!htmlInputFrame) return NS_ERROR_FAILURE;
nsCOMPtr<nsISelectionController> 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) {
sel = mSelection->GetSelection(nsISelectionController::SELECTION_NORMAL);
rv = NS_OK;
}
*outSelection = sel;
NS_IF_ADDREF(*outSelection);
return rv;
}
NS_IMETHODIMP
PresShell::DoGetContents(const nsACString& aMimeType, PRUint32 aFlags, PRBool aSelectionOnly, nsAString& aOutValue)
{
aOutValue.Truncate();
if (!mDocument) return NS_ERROR_FAILURE;
nsresult rv;
nsCOMPtr<nsISelection> sel;
// Now we have the selection. Make sure it's nonzero:
if (aSelectionOnly)
{
rv = GetSelectionForCopy(getter_AddRefs(sel));
if (NS_FAILED(rv)) return rv;
if (!sel) return NS_ERROR_FAILURE;
PRBool isCollapsed;
sel->GetIsCollapsed(&isCollapsed);
if (isCollapsed)
return NS_OK;
}
// call the copy code
return nsCopySupport::GetContents(aMimeType, aFlags, sel,
mDocument, aOutValue);
}
NS_IMETHODIMP
PresShell::DoCopy()
{
if (!mDocument) return NS_ERROR_FAILURE;
nsCOMPtr<nsISelection> sel;
nsresult rv = GetSelectionForCopy(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, mDocument, nsIClipboard::kGlobalClipboard);
if (NS_FAILED(rv))
return rv;
// Now that we have copied, update the Paste menu item
nsPIDOMWindow *domWindow = mDocument->GetWindow();
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");
// We actually have to mess with the docshell here, since we want to
// store the state back in it.
// XXXbz this isn't really right, since this is being called in the
// content viewer's Hide() method... by that point the docshell's
// state could be wrong. We should sort out a better ownership
// model for the layout history state.
nsCOMPtr<nsISupports> container = mPresContext->GetContainer();
if (!container)
return NS_ERROR_FAILURE;
nsCOMPtr<nsIDocShell> docShell(do_QueryInterface(container));
if (!docShell)
return NS_ERROR_FAILURE;
nsCOMPtr<nsILayoutHistoryState> historyState;
docShell->GetLayoutHistoryState(getter_AddRefs(historyState));
if (!historyState) {
// Create the document state object
rv = NS_NewLayoutHistoryState(getter_AddRefs(historyState));
if (NS_FAILED(rv)) {
*aState = nsnull;
return rv;
}
docShell->SetLayoutHistoryState(historyState);
}
*aState = historyState;
NS_IF_ADDREF(*aState);
// Capture frame state for the entire frame hierarchy
nsIFrame* rootFrame = FrameManager()->GetRootFrame();
if (!rootFrame) return NS_OK;
// Capture frame state for the root scroll frame
// Don't capture state when first creating doc element hierarchy
// As the scroll position is 0 and this will cause us to loose
// our previously saved place!
if (aLeavingPage) {
nsIFrame* scrollFrame = GetRootScrollFrame();
if (scrollFrame) {
FrameManager()->CaptureFrameStateFor(scrollFrame, historyState,
nsIStatefulFrame::eDocumentScrollState);
}
}
FrameManager()->CaptureFrameState(rootFrame, historyState);
return NS_OK;
}
NS_IMETHODIMP
PresShell::SetAnonymousContentFor(nsIContent* aContent, nsISupportsArray* aAnonymousElements)
{
NS_PRECONDITION(aContent != nsnull, "null ptr");
if (! aContent)
return NS_ERROR_NULL_POINTER;
if (! mAnonymousContentTable) {
mAnonymousContentTable = new nsSupportsHashtable;
if (! mAnonymousContentTable)
return NS_ERROR_OUT_OF_MEMORY;
}
nsISupportsKey key(aContent);
nsCOMPtr<nsISupportsArray> oldAnonymousElements =
getter_AddRefs(NS_STATIC_CAST(nsISupportsArray*, mAnonymousContentTable->Get(&key)));
if (!oldAnonymousElements) {
if (aAnonymousElements) {
mAnonymousContentTable->Put(&key, aAnonymousElements);
}
} else {
if (aAnonymousElements) {
oldAnonymousElements->AppendElements(aAnonymousElements);
} else {
// If we're trying to clear 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<nsIContent> content = do_QueryElementAt(oldAnonymousElements,
count);
NS_ASSERTION(content != nsnull, "not an nsIContent");
if (! content)
continue;
content->UnbindFromTree();
}
if (!mIsReleasingAnonymousContent)
mAnonymousContentTable->Remove(&key);
}
}
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<nsIContent> content = do_QueryElementAt(anonymousElements, count);
NS_ASSERTION(content != nsnull, "not an nsIContent");
if (! content)
continue;
content->UnbindFromTree();
}
return PR_TRUE;
}
NS_IMETHODIMP
PresShell::ReleaseAnonymousContent()
{
if (mAnonymousContentTable) {
mIsReleasingAnonymousContent = PR_TRUE;
mAnonymousContentTable->Enumerate(ClearDocumentEnumerator);
delete mAnonymousContentTable;
mAnonymousContentTable = nsnull;
}
return NS_OK;
}
NS_IMETHODIMP
PresShell::IsPaintingSuppressed(PRBool* aResult)
{
*aResult = mPaintingSuppressed;
return NS_OK;
}
void
PresShell::UnsuppressAndInvalidate()
{
if (!mPresContext->EnsureVisible(PR_FALSE)) {
// No point; we're about to be torn down anyway.
return;
2001-05-02 02:54:11 +04:00
}
mPaintingSuppressed = PR_FALSE;
nsIFrame* rootFrame = FrameManager()->GetRootFrame();
if (rootFrame) {
// let's assume that outline on a root frame is not supported
nsRect rect(nsPoint(0, 0), rootFrame->GetSize());
rootFrame->Invalidate(rect, PR_FALSE);
}
// This makes sure to get the same thing that nsPresContext::EnsureVisible()
// got.
nsCOMPtr<nsISupports> container = mPresContext->GetContainer();
nsCOMPtr<nsPIDOMWindow> ourWindow = do_GetInterface(container);
nsCOMPtr<nsIFocusController> focusController =
ourWindow ? ourWindow->GetRootFocusController() : nsnull;
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");
if (mViewManager)
mViewManager->SynthesizeMouseMove(PR_FALSE);
}
NS_IMETHODIMP
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PresShell::UnsuppressPainting()
{
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if (mPaintSuppressionTimer) {
mPaintSuppressionTimer->Cancel();
mPaintSuppressionTimer = nsnull;
}
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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;
}
NS_IMETHODIMP
PresShell::DisableThemeSupport()
{
// Doesn't have to be dynamic. Just set the bool.
mIsThemeSupportDisabled = PR_TRUE;
return NS_OK;
}
PRBool
PresShell::IsThemeSupportEnabled()
{
return !mIsThemeSupportDisabled;
}
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// Post a request to handle an arbitrary callback after reflow has finished.
NS_IMETHODIMP
PresShell::PostReflowCallback(nsIReflowCallback* aCallback)
{
void* result = AllocateFrame(sizeof(nsCallbackEventRequest));
if (NS_UNLIKELY(!result)) {
return NS_ERROR_OUT_OF_MEMORY;
}
nsCallbackEventRequest* request = (nsCallbackEventRequest*)result;
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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) {
node = node->next;
mFirstCallbackEventRequest = node;
NS_ASSERTION(before == nsnull, "impossible");
} else {
node = node->next;
before->next = node;
}
if (toFree == mLastCallbackEventRequest) {
mLastCallbackEventRequest = before;
}
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.
void* result = AllocateFrame(sizeof(nsDOMEventRequest));
if (NS_UNLIKELY(!result)) {
return NS_ERROR_OUT_OF_MEMORY;
}
nsDOMEventRequest* 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.
void* result = AllocateFrame(sizeof(nsAttributeChangeRequest));
if (NS_UNLIKELY(!result)) {
return NS_ERROR_OUT_OF_MEMORY;
}
nsAttributeChangeRequest* request = new (result) nsAttributeChangeRequest();
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;
}
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void
PresShell::HandlePostedReflowCallbacks()
{
PRBool shouldFlush = PR_FALSE;
while (mFirstCallbackEventRequest) {
nsCallbackEventRequest* node = mFirstCallbackEventRequest;
mFirstCallbackEventRequest = node->next;
if (!mFirstCallbackEventRequest) {
mLastCallbackEventRequest = nsnull;
}
nsIReflowCallback* callback = node->callback;
FreeFrame(sizeof(nsCallbackEventRequest), node);
if (callback)
callback->ReflowFinished(this, &shouldFlush);
NS_IF_RELEASE(callback);
}
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if (shouldFlush)
FlushPendingNotifications(Flush_Layout);
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}
void
PresShell::HandlePostedDOMEvents()
{
while(mFirstDOMEventRequest)
{
/* pull the node from the event request list. Be prepared for reentrant access to the list
from within Dispatch and its callees! */
nsDOMEventRequest* node = mFirstDOMEventRequest;
nsEventStatus status = nsEventStatus_eIgnore;
mFirstDOMEventRequest = node->next;
if (nsnull == mFirstDOMEventRequest) {
mLastDOMEventRequest = nsnull;
}
nsEventDispatcher::Dispatch(node->content, mPresContext, node->event,
nsnull, &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 || mChangeNestCount) {
// Not safe if we are reflowing or in the middle of frame construction
aIsSafeToFlush = PR_FALSE;
} else {
// Not safe if we are painting
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nsIViewManager* viewManager = GetViewManager();
if (viewManager) {
PRBool isPainting = PR_FALSE;
viewManager->IsPainting(isPainting);
if (isPainting) {
aIsSafeToFlush = PR_FALSE;
}
}
}
return NS_OK;
}
NS_IMETHODIMP
PresShell::FlushPendingNotifications(mozFlushType aType)
{
NS_ASSERTION(aType & (Flush_StyleReresolves | Flush_OnlyReflow |
Flush_OnlyPaint),
"Why did we get called?");
PRBool isSafeToFlush;
IsSafeToFlush(isSafeToFlush);
NS_ASSERTION(!isSafeToFlush || mViewManager, "Must have view manager");
if (isSafeToFlush && mViewManager) {
// Style reresolves not in conjunction with reflows can't cause
// painting or geometry changes, so don't bother with view update
// batching if we only have style reresolve
mViewManager->BeginUpdateViewBatch();
if (aType & Flush_StyleReresolves) {
mFrameConstructor->ProcessPendingRestyles();
}
if (aType & Flush_OnlyReflow) {
ProcessReflowCommands(PR_FALSE);
}
PRUint32 updateFlags = NS_VMREFRESH_NO_SYNC;
if (aType & Flush_OnlyPaint) {
// Flushing paints, so perform the invalidates and drawing
// immediately
updateFlags = NS_VMREFRESH_IMMEDIATE;
}
else if (!(aType & Flush_OnlyReflow)) {
// Not flushing reflows, so do deferred invalidates. This will keep us
// from possibly flushing out reflows due to invalidates being processed
// at the end of this view batch.
updateFlags = NS_VMREFRESH_DEFERRED;
}
mViewManager->EndUpdateViewBatch(updateFlags);
}
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(Flush_OnlyReflow);
}
Partial fix for bug 141900 (Text entry fields in forms excruciatingly slow.) mozilla/content/base/public/nsISelectionController.idl mozilla/content/base/src/nsSelection.cpp mozilla/editor/composer/src/nsEditorShell.cpp mozilla/editor/idl/nsIPlaintextEditor.idl mozilla/editor/libeditor/base/nsEditor.cpp mozilla/editor/libeditor/base/nsEditor.h mozilla/editor/libeditor/html/nsHTMLDataTransfer.cpp mozilla/editor/libeditor/html/nsHTMLEditor.cpp mozilla/editor/libeditor/text/nsEditorEventListeners.cpp mozilla/editor/libeditor/text/nsPlaintextDataTransfer.cpp mozilla/editor/libeditor/text/nsPlaintextEditor.cpp mozilla/editor/txtsvc/src/nsTextServicesDocument.cpp mozilla/editor/ui/dialogs/content/EdTableProps.js mozilla/embedding/components/find/src/nsWebBrowserFind.cpp mozilla/extensions/xmlterm/base/mozXMLTermSession.cpp mozilla/layout/base/public/nsIFrameSelection.h mozilla/layout/html/base/src/nsPresShell.cpp mozilla/layout/html/forms/src/nsGfxTextControlFrame2.cpp mozilla/mailnews/compose/src/nsMsgCompose.cpp mozilla/xpfe/browser/resources/content/viewPartialSource.js - Added aIsSynchronous arg to the ScrollSelectionIntoView() method of nsISelectionController and nsIFrameSelection. Updated all callers to pass new arg. - Modified selection to post a plevent to call which does the call to ScrollIntoView() in the async ScrollIntoView() case. - Edits in text widgets now use asynchronous reflow, paint, and scroll processing full time. - Removed redundant ScrollSelectionIntoView() calls in the editor event listeners. - Editor IME code now forced to flush reflows and paints before getting caret coordinates. r=jfrancis@netscape.com sr=waterson@netscape.com
2002-06-14 00:35:12 +04:00
else {
PostReflowEvent();
}
return rv;
}
NS_IMETHODIMP
PresShell::GetReflowBatchingStatus(PRBool* aIsBatching)
{
*aIsBatching = mBatchReflows;
return NS_OK;
}
void
PresShell::CharacterDataChanged(nsIDocument *aDocument,
nsIContent* aContent,
CharacterDataChangeInfo* aInfo)
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{
NS_PRECONDITION(!mIsDocumentGone, "Unexpected CharacterDataChanged");
NS_PRECONDITION(aDocument == mDocument, "Unexpected aDocument");
WillCauseReflow();
if (mCaret) {
// Invalidate the caret's current location before we call into the frame
// constructor. It is important to do this now, and not wait until the
// resulting reflow, because this call causes continuation frames of the
// text frame the caret is in to forget what part of the content they
// refer to, making it hard for them to return the correct continuation
// frame to the caret.
mCaret->InvalidateOutsideCaret();
}
mFrameConstructor->CharacterDataChanged(aContent, aInfo->mAppend);
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VERIFY_STYLE_TREE;
DidCauseReflow();
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}
void
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PresShell::ContentStatesChanged(nsIDocument* aDocument,
nsIContent* aContent1,
nsIContent* aContent2,
PRInt32 aStateMask)
1999-02-27 10:15:09 +03:00
{
NS_PRECONDITION(!mIsDocumentGone, "Unexpected ContentStatesChanged");
NS_PRECONDITION(aDocument == mDocument, "Unexpected aDocument");
WillCauseReflow();
mFrameConstructor->ContentStatesChanged(aContent1, aContent2, aStateMask);
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VERIFY_STYLE_TREE;
DidCauseReflow();
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}
void
PresShell::AttributeChanged(nsIDocument* aDocument,
nsIContent* aContent,
PRInt32 aNameSpaceID,
nsIAtom* aAttribute,
PRInt32 aModType)
{
NS_PRECONDITION(!mIsDocumentGone, "Unexpected AttributeChanged");
NS_PRECONDITION(aDocument == mDocument, "Unexpected aDocument");
// XXXwaterson it might be more elegant to wait until after the
// initial reflow to begin observing the document. That would
// squelch any other inappropriate notifications as well.
if (mDidInitialReflow) {
WillCauseReflow();
mFrameConstructor->AttributeChanged(aContent, aNameSpaceID,
aAttribute, aModType);
VERIFY_STYLE_TREE;
DidCauseReflow();
}
}
void
PresShell::ContentAppended(nsIDocument *aDocument,
nsIContent* aContainer,
PRInt32 aNewIndexInContainer)
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{
NS_PRECONDITION(!mIsDocumentGone, "Unexpected ContentAppended");
NS_PRECONDITION(aDocument == mDocument, "Unexpected aDocument");
if (!mDidInitialReflow) {
return;
}
WillCauseReflow();
MOZ_TIMER_DEBUGLOG(("Start: Frame Creation: PresShell::ContentAppended(), this=%p\n", this));
MOZ_TIMER_START(mFrameCreationWatch);
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mFrameConstructor->ContentAppended(aContainer, aNewIndexInContainer);
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VERIFY_STYLE_TREE;
MOZ_TIMER_DEBUGLOG(("Stop: Frame Creation: PresShell::ContentAppended(), this=%p\n", this));
MOZ_TIMER_STOP(mFrameCreationWatch);
DidCauseReflow();
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}
void
PresShell::ContentInserted(nsIDocument* aDocument,
nsIContent* aContainer,
nsIContent* aChild,
PRInt32 aIndexInContainer)
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{
NS_PRECONDITION(!mIsDocumentGone, "Unexpected ContentInserted");
NS_PRECONDITION(aDocument == mDocument, "Unexpected aDocument");
if (!mDidInitialReflow) {
return;
}
WillCauseReflow();
mFrameConstructor->ContentInserted(aContainer, aChild,
aIndexInContainer, nsnull, PR_FALSE);
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VERIFY_STYLE_TREE;
DidCauseReflow();
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}
void
PresShell::ContentRemoved(nsIDocument *aDocument,
nsIContent* aContainer,
nsIContent* aChild,
PRInt32 aIndexInContainer)
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{
NS_PRECONDITION(!mIsDocumentGone, "Unexpected ContentRemoved");
NS_PRECONDITION(aDocument == mDocument, "Unexpected aDocument");
// Make sure that the caret doesn't leave a turd where the child used to be.
if (mCaret) {
mCaret->InvalidateOutsideCaret();
}
// Notify the ESM that the content has been removed, so that
// it can clean up any state related to the content.
mPresContext->EventStateManager()->ContentRemoved(aChild);
WillCauseReflow();
mFrameConstructor->ContentRemoved(aContainer, aChild,
aIndexInContainer, PR_FALSE);
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VERIFY_STYLE_TREE;
DidCauseReflow();
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}
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nsresult
PresShell::ReconstructFrames(void)
{
nsresult rv = NS_OK;
WillCauseReflow();
rv = mFrameConstructor->ReconstructDocElementHierarchy();
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VERIFY_STYLE_TREE;
DidCauseReflow();
return rv;
}
void
nsIPresShell::ReconstructStyleDataInternal()
{
mStylesHaveChanged = PR_FALSE;
if (!mDidInitialReflow) {
// Nothing to do here, since we have no frames yet
return;
}
if (mIsDestroying) {
// We don't want to mess with restyles at this point
return;
}
nsIContent* root = mDocument->GetRootContent();
if (!root) {
// No content to restyle
return;
}
mFrameConstructor->PostRestyleEvent(root, eReStyle_Self, NS_STYLE_HINT_NONE);
#ifdef ACCESSIBILITY
InvalidateAccessibleSubtree(nsnull);
#endif
}
void
nsIPresShell::ReconstructStyleDataExternal()
{
ReconstructStyleDataInternal();
}
void
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PresShell::StyleSheetAdded(nsIDocument *aDocument,
nsIStyleSheet* aStyleSheet,
PRBool aDocumentSheet)
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{
// We only care when enabled sheets are added
NS_PRECONDITION(aStyleSheet, "Must have a style sheet!");
PRBool applicable;
aStyleSheet->GetApplicable(applicable);
if (applicable && aStyleSheet->HasRules()) {
mStylesHaveChanged = PR_TRUE;
}
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}
void
PresShell::StyleSheetRemoved(nsIDocument *aDocument,
nsIStyleSheet* aStyleSheet,
PRBool aDocumentSheet)
{
// We only care when enabled sheets are removed
NS_PRECONDITION(aStyleSheet, "Must have a style sheet!");
PRBool applicable;
aStyleSheet->GetApplicable(applicable);
if (applicable && aStyleSheet->HasRules()) {
mStylesHaveChanged = PR_TRUE;
}
}
void
PresShell::StyleSheetApplicableStateChanged(nsIDocument *aDocument,
nsIStyleSheet* aStyleSheet,
PRBool aApplicable)
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{
if (aStyleSheet->HasRules()) {
mStylesHaveChanged = PR_TRUE;
}
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}
void
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PresShell::StyleRuleChanged(nsIDocument *aDocument,
nsIStyleSheet* aStyleSheet,
nsIStyleRule* aOldStyleRule,
nsIStyleRule* aNewStyleRule)
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{
mStylesHaveChanged = PR_TRUE;
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}
void
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PresShell::StyleRuleAdded(nsIDocument *aDocument,
nsIStyleSheet* aStyleSheet,
nsIStyleRule* aStyleRule)
{
mStylesHaveChanged = PR_TRUE;
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}
void
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PresShell::StyleRuleRemoved(nsIDocument *aDocument,
nsIStyleSheet* aStyleSheet,
nsIStyleRule* aStyleRule)
{
mStylesHaveChanged = PR_TRUE;
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}
nsIFrame*
PresShell::GetPrimaryFrameFor(nsIContent* aContent) const
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{
return FrameManager()->GetPrimaryFrameFor(aContent, -1);
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}
NS_IMETHODIMP
PresShell::GetLayoutObjectFor(nsIContent* aContent,
nsISupports** aResult) const
{
nsresult result = NS_ERROR_NULL_POINTER;
if ((nsnull!=aResult) && (nsnull!=aContent))
{
*aResult = nsnull;
nsIFrame *primaryFrame = GetPrimaryFrameFor(aContent);
if (primaryFrame)
{
result = primaryFrame->QueryInterface(NS_GET_IID(nsISupports),
(void**)aResult);
}
}
return result;
}
NS_IMETHODIMP
PresShell::GetPlaceholderFrameFor(nsIFrame* aFrame,
nsIFrame** aResult) const
{
*aResult = FrameManager()->GetPlaceholderFrameFor(aFrame);
return NS_OK;
}
#ifdef IBMBIDI
NS_IMETHODIMP
PresShell::BidiStyleChangeReflow()
{
// Have the root frame's style context remap its style
nsIFrame* rootFrame = FrameManager()->GetRootFrame();
if (rootFrame) {
mStyleSet->ClearStyleData(mPresContext);
ReconstructFrames();
}
return NS_OK;
}
#endif // IBMBIDI
1998-08-28 06:54:06 +04:00
//nsIViewObserver
NS_IMETHODIMP
PresShell::ComputeRepaintRegionForCopy(nsIView* aRootView,
nsIView* aMovingView,
nsPoint aDelta,
const nsRect& aCopyRect,
nsRegion* aRepaintRegion)
{
return nsLayoutUtils::ComputeRepaintRegionForCopy(
NS_STATIC_CAST(nsIFrame*, aRootView->GetClientData()),
NS_STATIC_CAST(nsIFrame*, aMovingView->GetClientData()),
aDelta, aCopyRect, aRepaintRegion);
}
NS_IMETHODIMP
PresShell::RenderOffscreen(nsRect aRect, PRBool aUntrusted,
PRBool aIgnoreViewportScrolling,
nscolor aBackgroundColor,
nsIRenderingContext** aRenderedContext)
{
nsIView* rootView;
mViewManager->GetRootView(rootView);
NS_ASSERTION(rootView, "No root view?");
nsIWidget* rootWidget = rootView->GetWidget();
NS_ASSERTION(rootWidget, "No root widget?");
*aRenderedContext = nsnull;
NS_ASSERTION(!aUntrusted, "We don't support untrusted yet");
if (aUntrusted)
return NS_ERROR_NOT_IMPLEMENTED;
nsCOMPtr<nsIRenderingContext> tmpContext;
mPresContext->DeviceContext()->CreateRenderingContext(rootWidget,
*getter_AddRefs(tmpContext));
if (!tmpContext)
return NS_ERROR_FAILURE;
nsRect bounds(nsPoint(0, 0), aRect.Size());
bounds.ScaleRoundOut(mPresContext->TwipsToPixels());
nsIDrawingSurface* surface;
nsresult rv
= tmpContext->CreateDrawingSurface(bounds, NS_CREATEDRAWINGSURFACE_FOR_PIXEL_ACCESS,
surface);
if (NS_FAILED(rv))
return NS_ERROR_FAILURE;
nsCOMPtr<nsIRenderingContext> localcx;
rv = nsLayoutUtils::CreateOffscreenContext(mPresContext->DeviceContext(),
surface, aRect, getter_AddRefs(localcx));
if (NS_FAILED(rv)) {
tmpContext->DestroyDrawingSurface(surface);
return NS_ERROR_FAILURE;
}
// clipping and translation is set by CreateOffscreenContext
localcx->SetColor(aBackgroundColor);
localcx->FillRect(aRect);
nsIFrame* rootFrame = FrameManager()->GetRootFrame();
if (!rootFrame) {
localcx.swap(*aRenderedContext);
return NS_OK;
}
nsDisplayListBuilder builder(rootFrame, PR_FALSE, PR_FALSE);
nsDisplayList list;
nsIScrollableView* scrollingView = nsnull;
mViewManager->GetRootScrollableView(&scrollingView);
nsRect r = aRect;
if (aIgnoreViewportScrolling && scrollingView) {
nscoord x, y;
scrollingView->GetScrollPosition(x, y);
localcx->Translate(x, y);
r.MoveBy(-x, -y);
2006-02-01 23:33:20 +03:00
builder.SetIgnoreScrollFrame(GetRootScrollFrame());
}
builder.EnterPresShell(rootFrame, r);
rv = rootFrame->BuildDisplayListForStackingContext(&builder, r, &list);
builder.LeavePresShell(rootFrame, r);
NS_ENSURE_SUCCESS(rv, rv);
nsRegion region(r);
list.OptimizeVisibility(&builder, &region);
list.Paint(&builder, localcx, r);
// Flush the list so we don't trigger the IsEmpty-on-destruction assertion
list.DeleteAll();
localcx.swap(*aRenderedContext);
return NS_OK;
}
1998-12-18 18:54:23 +03:00
NS_IMETHODIMP
PresShell::Paint(nsIView* aView,
nsIRenderingContext* aRenderingContext,
const nsRegion& aDirtyRegion)
1998-08-28 06:54:06 +04:00
{
AUTO_LAYOUT_PHASE_ENTRY_POINT(GetPresContext(), Paint);
nsIFrame* frame;
nsresult rv = NS_OK;
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if (mIsDestroying) {
NS_ASSERTION(PR_FALSE, "A paint message was dispatched to a destroyed PresShell");
return NS_OK;
}
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NS_ASSERTION(!(nsnull == aView), "null view");
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frame = NS_STATIC_CAST(nsIFrame*, aView->GetClientData());
nscolor backgroundColor;
mViewManager->GetDefaultBackgroundColor(&backgroundColor);
for (nsIView *view = aView; view; view = view->GetParent()) {
if (view->HasWidget()) {
PRBool widgetIsTranslucent;
view->GetWidget()->GetWindowTranslucency(widgetIsTranslucent);
if (widgetIsTranslucent) {
backgroundColor = NS_RGBA(0,0,0,0);
break;
}
}
}
if (!frame) {
if (NS_GET_A(backgroundColor) > 0) {
aRenderingContext->SetColor(backgroundColor);
aRenderingContext->FillRect(aDirtyRegion.GetBounds());
}
return NS_OK;
}
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nsLayoutUtils::PaintFrame(aRenderingContext, frame, aDirtyRegion,
backgroundColor);
#ifdef NS_DEBUG
// Draw a border around the frame
if (nsIFrameDebug::GetShowFrameBorders()) {
nsRect r = frame->GetRect();
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
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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.
if (mCurrentEventContent->GetDocument()) {
mCurrentEventFrame = GetPrimaryFrameFor(mCurrentEventContent);
}
}
return mCurrentEventFrame;
}
NS_IMETHODIMP
PresShell::GetEventTargetFrame(nsIFrame** aFrame)
{
*aFrame = GetCurrentEventFrame();
return NS_OK;
}
NS_IMETHODIMP
PresShell::GetEventTargetContent(nsEvent* aEvent, nsIContent** aContent)
{
if (mCurrentEventContent) {
*aContent = mCurrentEventContent;
NS_IF_ADDREF(*aContent);
} else {
nsIFrame* currentEventFrame = GetCurrentEventFrame();
if (currentEventFrame) {
currentEventFrame->GetContentForEvent(mPresContext, aEvent, aContent);
} else {
*aContent = nsnull;
}
}
return NS_OK;
}
void
PresShell::PushCurrentEventInfo(nsIFrame* aFrame, nsIContent* aContent)
{
if (mCurrentEventFrame || mCurrentEventContent) {
mCurrentEventFrameStack.InsertElementAt((void*)mCurrentEventFrame, 0);
mCurrentEventContentStack.InsertObjectAt(mCurrentEventContent, 0);
}
mCurrentEventFrame = aFrame;
mCurrentEventContent = aContent;
}
void
PresShell::PopCurrentEventInfo()
{
mCurrentEventFrame = nsnull;
mCurrentEventContent = nsnull;
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if (0 != mCurrentEventFrameStack.Count()) {
mCurrentEventFrame = (nsIFrame*)mCurrentEventFrameStack.ElementAt(0);
mCurrentEventFrameStack.RemoveElementAt(0);
mCurrentEventContent = mCurrentEventContentStack.ObjectAt(0);
mCurrentEventContentStack.RemoveObjectAt(0);
}
}
PRBool PresShell::InZombieDocument(nsIContent *aContent)
{
// If a content node points to a null document, or the document is not
// attached to a window, then it is possibly in a zombie document,
// about to be replaced by a newly loading document.
// Such documents cannot handle DOM events.
// It might actually be in a node not attached to any document,
// in which case there is not parent presshell to retarget it to.
nsIDocument *doc = aContent->GetDocument();
return !doc || !doc->GetWindow();
}
nsresult PresShell::RetargetEventToParent(nsGUIEvent* aEvent,
nsEventStatus* aEventStatus)
{
// Send this events straight up to the parent pres shell.
// We do this for keystroke events in zombie documents or if either a frame
// or a root content is not present.
// That way at least the UI key bindings can work.
nsCOMPtr<nsIPresShell> kungFuDeathGrip(this);
nsCOMPtr<nsISupports> container = mPresContext->GetContainer();
if (!container)
container = do_QueryReferent(mForwardingContainer);
// Now, find the parent pres shell and send the event there
nsCOMPtr<nsIDocShellTreeItem> treeItem =
do_QueryInterface(container);
NS_ASSERTION(treeItem, "No tree item for container.");
nsCOMPtr<nsIDocShellTreeItem> parentTreeItem;
treeItem->GetParent(getter_AddRefs(parentTreeItem));
nsCOMPtr<nsIDocShell> parentDocShell =
do_QueryInterface(parentTreeItem);
if (!parentDocShell || treeItem == parentTreeItem) {
return NS_ERROR_FAILURE;
}
nsCOMPtr<nsIPresShell> parentPresShell;
parentDocShell->GetPresShell(getter_AddRefs(parentPresShell));
nsCOMPtr<nsIViewObserver> parentViewObserver =
do_QueryInterface(parentPresShell);
if (!parentViewObserver) {
return NS_ERROR_FAILURE;
}
// Fake the event as though it'ss from the parent pres shell's root view.
nsIView *parentRootView;
parentPresShell->GetViewManager()->GetRootView(parentRootView);
return parentViewObserver->HandleEvent(parentRootView, aEvent,
aEventStatus);
}
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NS_IMETHODIMP
PresShell::HandleEvent(nsIView *aView,
nsGUIEvent* aEvent,
nsEventStatus* aEventStatus)
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{
NS_ASSERTION(aView, "null view");
if (mIsDestroying || mIsReflowing || mChangeNestCount) {
return NS_OK;
}
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#ifdef ACCESSIBILITY
if (aEvent->eventStructType == NS_ACCESSIBLE_EVENT) {
return HandleEventInternal(aEvent, aView, aEventStatus);
}
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#endif
// Check for a theme change up front, since the frame type is irrelevant
if (aEvent->message == NS_THEMECHANGED && mPresContext) {
mPresContext->ThemeChanged();
return NS_OK;
}
// Check for a system color change up front, since the frame type is
// irrelevant
if ((aEvent->message == NS_SYSCOLORCHANGED) && mPresContext) {
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nsIViewManager* vm = GetViewManager();
if (vm) {
// Only dispatch system color change when the message originates from
// from the root views widget. This is necessary to prevent us from
// dispatching the SysColorChanged notification for each child window
// which may be redundant.
2004-05-17 20:29:13 +04:00
nsIView *view;
vm->GetRootView(view);
if (view == aView) {
*aEventStatus = nsEventStatus_eConsumeDoDefault;
mPresContext->SysColorChanged();
return NS_OK;
}
}
return NS_OK;
}
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nsIFrame* frame = NS_STATIC_CAST(nsIFrame*, aView->GetClientData());
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PRBool dispatchUsingCoordinates =
!NS_IS_KEY_EVENT(aEvent) && !NS_IS_IME_EVENT(aEvent) &&
!NS_IS_CONTEXT_MENU_KEY(aEvent) && !NS_IS_FOCUS_EVENT(aEvent);
// if this event has no frame, we need to retarget it at a parent
// view that has a frame.
if (!frame &&
(dispatchUsingCoordinates || NS_IS_KEY_EVENT(aEvent) ||
NS_IS_IME_EVENT(aEvent))) {
nsIView* targetView = aView;
while (targetView && !targetView->GetClientData()) {
targetView = targetView->GetParent();
}
if (targetView) {
aView = targetView;
frame = NS_STATIC_CAST(nsIFrame*, aView->GetClientData());
}
}
if (dispatchUsingCoordinates) {
NS_ASSERTION(frame, "Nothing to handle this event!");
if (!frame)
return NS_OK;
nsPoint eventPoint
= nsLayoutUtils::GetEventCoordinatesRelativeTo(aEvent, frame);
nsIFrame* targetFrame = nsLayoutUtils::GetFrameForPoint(frame, eventPoint);
if (targetFrame) {
PresShell* shell =
NS_STATIC_CAST(PresShell*, targetFrame->GetPresContext()->PresShell());
if (shell != this) {
// Handle the event in the correct shell.
// Prevent deletion until we're done with event handling (bug 336582).
nsRefPtr<nsIPresShell> kungFuDeathGrip(shell);
nsIView* subshellRootView;
shell->GetViewManager()->GetRootView(subshellRootView);
// We pass the subshell's root view as the view to start from. This is
// the only correct alternative; if the event was captured then it
// must have been captured by us or some ancestor shell and we
// now ask the subshell to dispatch it normally.
return shell->HandlePositionedEvent(subshellRootView, targetFrame,
aEvent, aEventStatus);
}
}
if (!targetFrame) {
targetFrame = frame;
}
return HandlePositionedEvent(aView, targetFrame, aEvent, aEventStatus);
}
nsresult rv = NS_OK;
if (frame) {
PushCurrentEventInfo(nsnull, nsnull);
// key and IME events go to the focused frame
nsIEventStateManager *esm = mPresContext->EventStateManager();
if (NS_IS_KEY_EVENT(aEvent) || NS_IS_IME_EVENT(aEvent) ||
NS_IS_CONTEXT_MENU_KEY(aEvent)) {
esm->GetFocusedFrame(&mCurrentEventFrame);
if (mCurrentEventFrame) {
esm->GetFocusedContent(getter_AddRefs(mCurrentEventContent));
} else {
#if defined(MOZ_X11) || defined(XP_WIN)
#if defined(MOZ_X11)
if (NS_IS_IME_EVENT(aEvent)) {
// bug 52416 (MOZ_X11)
// Lookup region (candidate window) of UNIX IME grabs
// input focus from Mozilla but wants to send IME event
// to redraw pre-edit (composed) string
// If Mozilla does not have input focus and event is IME,
// sends IME event to pre-focused element
#else
if (NS_IS_KEY_EVENT(aEvent) || NS_IS_IME_EVENT(aEvent)) {
// bug 292263 (XP_WIN)
// If software keyboard has focus, it may send the key messages and
// the IME messages to pre-focused window. Therefore, if Mozilla
// doesn't have focus and event is key event or IME event, we should
// send the events to pre-focused element.
#endif /* defined(MOZ_X11) */
nsPIDOMWindow *ourWindow = mDocument->GetWindow();
if (ourWindow) {
nsIFocusController *focusController =
ourWindow->GetRootFocusController();
if (focusController) {
PRBool active = PR_FALSE;
// check input focus is in Mozilla
focusController->GetActive(&active);
if (!active) {
// if not, search for pre-focused element
nsCOMPtr<nsIDOMElement> focusedElement;
focusController->GetFocusedElement(getter_AddRefs(focusedElement));
if (focusedElement) {
// get mCurrentEventContent from focusedElement
mCurrentEventContent = do_QueryInterface(focusedElement);
}
}
}
}
}
#endif /* defined(MOZ_X11) || defined(XP_WIN) */
if (!mCurrentEventContent) {
mCurrentEventContent = mDocument->GetRootContent();
}
mCurrentEventFrame = nsnull; // XXXldb Isn't it already?
}
if (!mCurrentEventContent || InZombieDocument(mCurrentEventContent)) {
rv = RetargetEventToParent(aEvent, aEventStatus);
PopCurrentEventInfo();
return rv;
}
} else {
mCurrentEventFrame = frame;
}
if (GetCurrentEventFrame()) {
rv = HandleEventInternal(aEvent, aView, aEventStatus);
}
#ifdef NS_DEBUG
ShowEventTargetDebug();
#endif
PopCurrentEventInfo();
} else {
// Focus events need to be dispatched even if no frame was found, since
// we don't want the focus controller to be out of sync.
if (!NS_EVENT_NEEDS_FRAME(aEvent)) {
mCurrentEventFrame = nsnull;
return HandleEventInternal(aEvent, aView, aEventStatus);
}
else if (NS_IS_KEY_EVENT(aEvent)) {
// Keypress events in new blank tabs should not be completely thrown away.
// Retarget them -- the parent chrome shell might make use of them.
return RetargetEventToParent(aEvent, aEventStatus);
}
}
return rv;
}
#ifdef NS_DEBUG
void
PresShell::ShowEventTargetDebug()
{
if ((nsIFrameDebug::GetShowEventTargetFrameBorder()) &&
(GetCurrentEventFrame())) {
nsIView *oldView = mCurrentTargetView;
nsPoint offset(0,0);
nsRect oldTargetRect(mCurrentTargetRect);
mCurrentTargetRect = mCurrentEventFrame->GetRect();
mCurrentTargetView = mCurrentEventFrame->GetView();
if (!mCurrentTargetView ) {
mCurrentEventFrame->GetOffsetFromView(offset, &mCurrentTargetView);
}
if (mCurrentTargetView) {
mCurrentTargetRect.x = offset.x;
mCurrentTargetRect.y = offset.y;
// use aView or mCurrentTargetView??
if ((mCurrentTargetRect != oldTargetRect) ||
(mCurrentTargetView != oldView)) {
nsIViewManager* vm = GetViewManager();
if (vm) {
vm->UpdateView(mCurrentTargetView,mCurrentTargetRect,0);
if (oldView)
vm->UpdateView(oldView,oldTargetRect,0);
}
}
}
}
}
#endif
nsresult
PresShell::HandlePositionedEvent(nsIView* aView,
nsIFrame* aTargetFrame,
nsGUIEvent* aEvent,
nsEventStatus* aEventStatus)
{
nsresult rv = NS_OK;
PushCurrentEventInfo(nsnull, nsnull);
mCurrentEventFrame = aTargetFrame;
if (mCurrentEventFrame) {
nsCOMPtr<nsIContent> targetElement;
mCurrentEventFrame->GetContentForEvent(mPresContext, aEvent,
getter_AddRefs(targetElement));
// If there is no content for this frame, target it anyway. Some
// frames can be targeted but do not have content, particularly
// windows with scrolling off.
if (targetElement) {
// Bug 103055, bug 185889: mouse events apply to *elements*, not all
// nodes. Thus we get the nearest element parent here.
// XXX we leave the frame the same even if we find an element
// parent, so that the text frame will receive the event (selection
// and friends are the ones who care about that anyway)
//
// We use weak pointers because during this tight loop, the node
// will *not* go away. And this happens on every mousemove.
while (targetElement &&
!targetElement->IsNodeOfType(nsINode::eELEMENT)) {
targetElement = targetElement->GetParent();
}
// If we found an element, target it. Otherwise, target *nothing*.
if (!targetElement) {
mCurrentEventContent = nsnull;
mCurrentEventFrame = nsnull;
} else if (targetElement != mCurrentEventContent) {
mCurrentEventContent = targetElement;
}
}
}
if (GetCurrentEventFrame()) {
rv = HandleEventInternal(aEvent, aView, aEventStatus);
}
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#ifdef NS_DEBUG
ShowEventTargetDebug();
#endif
PopCurrentEventInfo();
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return rv;
}
NS_IMETHODIMP
PresShell::HandleEventWithTarget(nsEvent* aEvent, nsIFrame* aFrame,
nsIContent* aContent, nsEventStatus* aStatus)
{
nsresult ret;
PushCurrentEventInfo(aFrame, aContent);
ret = HandleEventInternal(aEvent, nsnull, aStatus);
PopCurrentEventInfo();
return NS_OK;
}
inline PRBool
IsSynthesizedMouseMove(nsEvent* aEvent)
{
return aEvent->eventStructType == NS_MOUSE_EVENT &&
NS_STATIC_CAST(nsMouseEvent*, aEvent)->reason != nsMouseEvent::eReal;
}
nsresult
PresShell::HandleEventInternal(nsEvent* aEvent, nsIView *aView,
nsEventStatus* aStatus)
{
2001-08-17 07:13:07 +04:00
#ifdef ACCESSIBILITY
if (aEvent->eventStructType == NS_ACCESSIBLE_EVENT)
{
NS_STATIC_CAST(nsAccessibleEvent*, aEvent)->accessible = nsnull;
nsCOMPtr<nsIAccessibilityService> accService =
do_GetService("@mozilla.org/accessibilityService;1");
if (accService) {
nsCOMPtr<nsISupports> container = mPresContext->GetContainer();
if (!container) {
// This presshell is not active. This often happens when a
// preshell is being held onto for fastback.
return NS_OK;
}
nsIAccessible* acc;
nsCOMPtr<nsIDOMNode> domNode(do_QueryInterface(mDocument));
NS_ASSERTION(domNode, "No dom node for doc");
accService->GetAccessibleInShell(domNode, this, &acc);
// Addref this - it's not a COM Ptr
// We'll make sure the right number of Addref's occur before
// handing this back to the accessibility client
NS_STATIC_CAST(nsAccessibleEvent*, aEvent)->accessible = acc;
mIsAccessibilityActive = PR_TRUE;
return NS_OK;
}
}
2001-08-17 07:13:07 +04:00
#endif
nsCOMPtr<nsIEventStateManager> manager = mPresContext->EventStateManager();
nsresult rv = NS_OK;
if (!NS_EVENT_NEEDS_FRAME(aEvent) || GetCurrentEventFrame()) {
PRBool isHandlingUserInput = PR_FALSE;
if (NS_IS_TRUSTED_EVENT(aEvent)) {
switch (aEvent->message) {
case NS_GOTFOCUS:
case NS_LOSTFOCUS:
case NS_ACTIVATE:
case NS_DEACTIVATE:
// Treat focus/blur events as user input if they happen while
// executing trusted script, or no script at all. If they
// happen during execution of non-trusted script, then they
// should not be considered user input.
if (!nsContentUtils::IsCallerChrome()) {
break;
}
case NS_MOUSE_BUTTON_DOWN:
case NS_MOUSE_BUTTON_UP:
case NS_KEY_PRESS:
case NS_KEY_DOWN:
case NS_KEY_UP:
isHandlingUserInput = PR_TRUE;
}
}
nsAutoHandlingUserInputStatePusher userInpStatePusher(isHandlingUserInput);
nsAutoPopupStatePusher popupStatePusher(nsDOMEvent::GetEventPopupControlState(aEvent));
// FIXME. If the event was reused, we need to clear the old target,
// bug 329430
aEvent->target = nsnull;
// 1. Give event to event manager for pre event state changes and
// generation of synthetic events.
rv = manager->PreHandleEvent(mPresContext, aEvent, mCurrentEventFrame,
aStatus, aView);
// 2. Give event to the DOM for third party and JS use.
if ((GetCurrentEventFrame()) && NS_SUCCEEDED(rv)) {
// We want synthesized mouse moves to cause mouseover and mouseout
// DOM events (PreHandleEvent above), but not mousemove DOM events.
if (!IsSynthesizedMouseMove(aEvent)) {
nsPresShellEventCB eventCB(this);
if (mCurrentEventContent) {
nsEventDispatcher::Dispatch(mCurrentEventContent, mPresContext,
aEvent, nsnull, aStatus, &eventCB);
}
else {
nsCOMPtr<nsIContent> targetContent;
rv = mCurrentEventFrame->GetContentForEvent(mPresContext, aEvent,
getter_AddRefs(targetContent));
if (NS_SUCCEEDED(rv) && targetContent) {
nsEventDispatcher::Dispatch(targetContent, mPresContext, aEvent,
nsnull, aStatus, &eventCB);
}
}
}
// 3. Give event to event manager for post event state changes and
// generation of synthetic events.
if (NS_SUCCEEDED (rv) &&
(GetCurrentEventFrame() || !NS_EVENT_NEEDS_FRAME(aEvent))) {
rv = manager->PostHandleEvent(mPresContext, aEvent, mCurrentEventFrame,
aStatus, aView);
}
}
}
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)
{
PushCurrentEventInfo(nsnull, aTargetContent);
// Bug 41013: Check if the event should be dispatched to content.
// It's possible that we are in the middle of destroying the window
// and the js context is out of date. This check detects the case
// that caused a crash in bug 41013, but there may be a better way
// to handle this situation!
nsCOMPtr<nsISupports> container = mPresContext->GetContainer();
if (container) {
// Dispatch event to content
nsEventDispatcher::Dispatch(aTargetContent, mPresContext, aEvent, nsnull,
aStatus);
}
PopCurrentEventInfo();
return NS_OK;
}
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NS_IMETHODIMP
PresShell::ResizeReflow(nsIView *aView, nscoord aWidth, nscoord aHeight)
1998-08-28 06:54:06 +04:00
{
return ResizeReflow(aWidth, aHeight);
}
NS_IMETHODIMP_(PRBool)
PresShell::IsVisible()
{
nsCOMPtr<nsISupports> container = mPresContext->GetContainer();
nsCOMPtr<nsIBaseWindow> bw = do_QueryInterface(container);
if (!bw)
return PR_FALSE;
PRBool res = PR_TRUE;
bw->GetVisibility(&res);
return res;
}
NS_IMETHODIMP_(void)
PresShell::WillPaint()
{
// Don't reenter reflow and don't reflow during frame construction. Also
// don't bother reflowing if some viewmanager in our tree is painting while
// we still have painting suppressed.
if (mIsReflowing || mChangeNestCount || mPaintingSuppressed) {
return;
}
// Process reflows, if we have them, to reduce flicker due to invalidates and
// reflow being interspersed. Note that we _do_ allow this to be
// interruptible; if we can't do all the reflows it's better to flicker a bit
// than to freeze up.
// XXXbz this update batch may not be strictly necessary, but it's good form.
// XXXbz should we be flushing out style changes here? Probably not, I'd say.
NS_ASSERTION(mViewManager, "Something weird is going on");
mViewManager->BeginUpdateViewBatch();
ProcessReflowCommands(PR_TRUE);
mViewManager->EndUpdateViewBatch(NS_VMREFRESH_NO_SYNC);
}
nsresult
PresShell::GetAgentStyleSheets(nsCOMArray<nsIStyleSheet>& aSheets)
{
aSheets.Clear();
PRInt32 sheetCount = mStyleSet->SheetCount(nsStyleSet::eAgentSheet);
for (PRInt32 i = 0; i < sheetCount; ++i) {
nsIStyleSheet *sheet = mStyleSet->StyleSheetAt(nsStyleSet::eAgentSheet, i);
if (!aSheets.AppendObject(sheet))
return NS_ERROR_OUT_OF_MEMORY;
}
return NS_OK;
}
nsresult
PresShell::SetAgentStyleSheets(const nsCOMArray<nsIStyleSheet>& aSheets)
{
return mStyleSet->ReplaceSheets(nsStyleSet::eAgentSheet, aSheets);
}
nsresult
PresShell::AddOverrideStyleSheet(nsIStyleSheet *aSheet)
{
return mStyleSet->PrependStyleSheet(nsStyleSet::eOverrideSheet, aSheet);
}
nsresult
PresShell::RemoveOverrideStyleSheet(nsIStyleSheet *aSheet)
{
return mStyleSet->RemoveStyleSheet(nsStyleSet::eOverrideSheet, aSheet);
}
static void
StopPluginInstance(PresShell *aShell, nsIContent *aContent)
{
nsIFrame *frame = aShell->FrameManager()->GetPrimaryFrameFor(aContent, -1);
nsIObjectFrame *objectFrame = nsnull;
if (frame)
CallQueryInterface(frame, &objectFrame);
if (!objectFrame)
return;
objectFrame->StopPlugin();
}
PR_STATIC_CALLBACK(PRBool)
FreezeSubDocument(nsIDocument *aDocument, void *aData)
{
nsIPresShell *shell = aDocument->GetShellAt(0);
if (shell)
shell->Freeze();
return PR_TRUE;
}
void
PresShell::Freeze()
{
nsCOMPtr<nsIDOMDocument> domDoc = do_QueryInterface(mDocument);
if (domDoc) {
EnumeratePlugins(domDoc, NS_LITERAL_STRING("object"), StopPluginInstance);
EnumeratePlugins(domDoc, NS_LITERAL_STRING("applet"), StopPluginInstance);
EnumeratePlugins(domDoc, NS_LITERAL_STRING("embed"), StopPluginInstance);
}
if (mCaret)
mCaret->SetCaretVisible(PR_FALSE);
mPaintingSuppressed = PR_TRUE;
if (mDocument)
mDocument->EnumerateSubDocuments(FreezeSubDocument, nsnull);
}
static void
StartPluginInstance(PresShell *aShell, nsIContent *aContent)
{
nsCOMPtr<nsIObjectLoadingContent> objlc(do_QueryInterface(aContent));
if (!objlc)
return;
nsCOMPtr<nsIPluginInstance> inst;
objlc->EnsureInstantiation(getter_AddRefs(inst));
}
PR_STATIC_CALLBACK(PRBool)
ThawSubDocument(nsIDocument *aDocument, void *aData)
{
nsIPresShell *shell = aDocument->GetShellAt(0);
if (shell)
shell->Thaw();
return PR_TRUE;
}
void
PresShell::Thaw()
{
nsCOMPtr<nsIDOMDocument> domDoc = do_QueryInterface(mDocument);
if (domDoc) {
EnumeratePlugins(domDoc, NS_LITERAL_STRING("object"), StartPluginInstance);
EnumeratePlugins(domDoc, NS_LITERAL_STRING("applet"), StartPluginInstance);
EnumeratePlugins(domDoc, NS_LITERAL_STRING("embed"), StartPluginInstance);
}
if (mDocument)
mDocument->EnumerateSubDocuments(ThawSubDocument, nsnull);
UnsuppressPainting();
}
//--------------------------------------------------------
// Start of protected and private methods on the PresShell
//--------------------------------------------------------
//-------------- Begin Reflow Event Definition ------------------------
NS_IMETHODIMP
PresShell::ReflowEvent::Run() {
// Take an owning reference to the PresShell during this call to ensure
// that it doesn't get killed off prematurely.
nsRefPtr<PresShell> ps = mPresShell;
if (ps) {
#ifdef DEBUG
if (VERIFY_REFLOW_NOISY_RC & gVerifyReflowFlags) {
printf("\n*** Handling reflow event: PresShell=%p, event=%p\n", (void*)ps, (void*)this);
}
#endif
// NOTE: the ReflowEvent class is a friend of the PresShell class
PRBool isBatching;
ps->ClearReflowEventStatus();
ps->GetReflowBatchingStatus(&isBatching);
if (!isBatching) {
// 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.
nsCOMPtr<nsIViewManager> viewManager = ps->GetViewManager();
NS_ENSURE_TRUE(viewManager, NS_OK);
viewManager->BeginUpdateViewBatch();
ps->ProcessReflowCommands(PR_TRUE);
viewManager->EndUpdateViewBatch(NS_VMREFRESH_NO_SYNC);
// Now, explicitly release the pres shell before the view manager
ps = nsnull;
viewManager = nsnull;
}
}
return NS_OK;
}
//-------------- End Reflow Event Definition ---------------------------
void
PresShell::PostReflowEvent()
{
if (mReflowEvent.IsPending() || mIsDestroying || mIsReflowing ||
mReflowCommands.Count() == 0)
return;
nsRefPtr<ReflowEvent> ev = new ReflowEvent(this);
if (NS_FAILED(NS_DispatchToCurrentThread(ev))) {
NS_WARNING("failed to dispatch reflow event");
} else {
mReflowEvent = ev;
#ifdef DEBUG
if (VERIFY_REFLOW_NOISY_RC & gVerifyReflowFlags) {
printf("\n*** PresShell::PostReflowEvent(), this=%p, event=%p\n", (void*)this, (void*)ev);
}
#endif
}
}
nsresult
PresShell::DidCauseReflow()
{
NS_ASSERTION(mChangeNestCount != 0, "Unexpected call to DidCauseReflow()");
if (--mChangeNestCount == 0) {
// We may have had more reflow commands appended to the queue during
// our reflow. Make sure these get processed at some point.
PostReflowEvent();
}
2000-09-12 04:35:11 +04:00
return NS_OK;
}
void
PresShell::WillDoReflow()
{
// We just reflowed, tell the caret that its frame might have moved.
if (mCaret) {
mCaret->InvalidateOutsideCaret();
mCaret->UpdateCaretPosition();
}
}
void
PresShell::DidDoReflow()
{
HandlePostedDOMEvents();
HandlePostedAttributeChanges();
HandlePostedReflowCallbacks();
// Null-check mViewManager in case this happens during Destroy. See
// bugs 244435 and 238546.
if (!mPaintingSuppressed && mViewManager)
mViewManager->SynthesizeMouseMove(PR_FALSE);
if (mCaret) {
// Update the caret's position now to account for any changes created by
// the reflow.
mCaret->InvalidateOutsideCaret();
mCaret->UpdateCaretPosition();
}
}
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 = FrameManager()->GetRootFrame();
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nsSize maxSize = rootFrame->GetSize();
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
WillDoReflow();
// If reflow is interruptible, then make a note of our deadline.
const PRIntervalTime deadline = aInterruptible
? PR_IntervalNow() + PR_MicrosecondsToInterval(gMaxRCProcessingTime)
: (PRIntervalTime)0;
// force flushing of any pending notifications
mDocument->BeginUpdate(UPDATE_ALL);
mDocument->EndUpdate(UPDATE_ALL);
// Scope for the reflow entry point
{
AUTO_LAYOUT_PHASE_ENTRY_POINT(GetPresContext(), Reflow);
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]);
IncrementalReflow::AddCommandResult res =
reflow.AddCommand(mPresContext, command);
if (res == IncrementalReflow::eEnqueued ||
res == IncrementalReflow::eCancel) {
// Remove the command from the queue.
mReflowCommands.RemoveElementAt(i);
ReflowCommandRemoved(command);
if (res == IncrementalReflow::eCancel)
delete 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.
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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 unblock onload.
DoneRemovingReflowCommands();
DidDoReflow();
}
MOZ_TIMER_DEBUGLOG(("Stop: Reflow: PresShell::ProcessReflowCommands(), this=%p\n", this));
MOZ_TIMER_STOP(mReflowWatch);
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;
}
void
PresShell::ClearReflowEventStatus()
{
mReflowEvent.Forget();
}
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nsresult
PresShell::ReflowCommandAdded(nsHTMLReflowCommand* aRC)
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{
NS_PRECONDITION(mRCCreatedDuringLoad >= 0, "PresShell's reflow command queue is in a bad state.");
if (mDocumentLoading) {
aRC->AddFlagBits(NS_RC_CREATED_DURING_DOCUMENT_LOAD);
mRCCreatedDuringLoad++;
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#ifdef PR_LOGGING
if (PR_LOG_TEST(gLog, PR_LOG_DEBUG)) {
nsIFrame* target;
aRC->GetTarget(target);
nsIAtom* type = target->GetType();
NS_ASSERTION(type, "frame didn't override GetType()");
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_ConvertUTF16toUTF8(typeStr).get(), mRCCreatedDuringLoad));
}
#endif
if (!mDocumentOnloadBlocked) {
mDocument->BlockOnload();
mDocumentOnloadBlocked = PR_TRUE;
}
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}
return NS_OK;
}
nsresult
PresShell::ReflowCommandRemoved(nsHTMLReflowCommand* aRC)
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{
NS_PRECONDITION(mReflowCommandTable.ops, "How did that happen?");
PL_DHashTableOperate(&mReflowCommandTable, aRC, PL_DHASH_REMOVE);
NS_PRECONDITION(mRCCreatedDuringLoad >= 0, "PresShell's reflow command queue is in a bad state.");
if (aRC->GetFlagBits() & NS_RC_CREATED_DURING_DOCUMENT_LOAD) {
mRCCreatedDuringLoad--;
PR_LOG(gLog, PR_LOG_DEBUG,
("presshell=%p, ReflowCommandRemoved(%p) mRCCreatedDuringLoad=%d\n",
this, aRC, mRCCreatedDuringLoad));
}
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return NS_OK;
}
void
PresShell::DoneRemovingReflowCommands()
{
// We want to unblock here even if we're destroying, since onload
// can well fire with no presentation in sight. So just check
// whether we actually blocked onload.
if (mRCCreatedDuringLoad == 0 && mDocumentOnloadBlocked) {
mDocument->UnblockOnload(PR_FALSE);
mDocumentOnloadBlocked = PR_FALSE;
}
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}
#ifdef MOZ_XUL
/*
* It's better to add stuff to the |DidSetStyleContext| method of the
* relevant frames than adding it here. These methods should (ideally,
* anyway) go away.
*/
// Return value says whether to walk children.
typedef PRBool (* PR_CALLBACK frameWalkerFn)(nsIFrame *aFrame, void *aClosure);
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<nsITreeBoxObject> 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<nsIMenuFrame> menuFrame(do_QueryInterface(aFrame));
if (menuFrame) {
menuFrame->UngenerateMenu();
menuFrame->OpenMenu(PR_FALSE);
}
return PR_TRUE;
}
PR_STATIC_CALLBACK(PRBool)
ReframeImageBoxes(nsIFrame *aFrame, void *aClosure)
{
nsStyleChangeList *list = NS_STATIC_CAST(nsStyleChangeList*, aClosure);
if (aFrame->GetType() == nsLayoutAtoms::imageBoxFrame) {
list->AppendChange(aFrame, aFrame->GetContent(),
NS_STYLE_HINT_FRAMECHANGE);
return PR_FALSE; // don't walk descendants
}
return PR_TRUE; // walk descendants
}
static void
WalkFramesThroughPlaceholders(nsPresContext *aPresContext, nsIFrame *aFrame,
frameWalkerFn aFunc, void *aClosure)
{
PRBool walkChildren = (*aFunc)(aFrame, aClosure);
if (!walkChildren)
return;
PRInt32 listIndex = 0;
nsIAtom* childList = nsnull;
do {
nsIFrame *child = aFrame->GetFirstChild(childList);
while (child) {
if (!(child->GetStateBits() & NS_FRAME_OUT_OF_FLOW)) {
// only do frames that are in flow, and recur through the
// out-of-flows of placeholders.
WalkFramesThroughPlaceholders(aPresContext,
nsPlaceholderFrame::GetRealFrameFor(child),
aFunc, aClosure);
}
child = child->GetNextSibling();
}
childList = aFrame->GetAdditionalChildListName(listIndex++);
} while (childList);
}
#endif
NS_IMETHODIMP
PresShell::Observe(nsISupports* aSubject,
const char* aTopic,
const PRUnichar* aData)
{
#ifdef MOZ_XUL
if (!nsCRT::strcmp(aTopic, "chrome-flush-skin-caches")) {
nsIFrame *rootFrame = FrameManager()->GetRootFrame();
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// Need to null-check because "chrome-flush-skin-caches" can happen
// at interesting times during startup.
if (rootFrame) {
NS_ASSERTION(mViewManager, "View manager must exist");
mViewManager->BeginUpdateViewBatch();
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WalkFramesThroughPlaceholders(mPresContext, rootFrame,
&ReResolveMenusAndTrees, nsnull);
// Because "chrome:" URL equality is messy, reframe image box
// frames (hack!).
nsStyleChangeList changeList;
WalkFramesThroughPlaceholders(mPresContext, rootFrame,
ReframeImageBoxes, &changeList);
mFrameConstructor->ProcessRestyledFrames(changeList);
mViewManager->EndUpdateViewBatch(NS_VMREFRESH_NO_SYNC);
#ifdef ACCESSIBILITY
InvalidateAccessibleSubtree(nsnull);
#endif
}
return NS_OK;
}
#endif
if (!nsCRT::strcmp(aTopic, NS_LINK_VISITED_EVENT_TOPIC)) {
nsCOMPtr<nsIURI> uri = do_QueryInterface(aSubject);
if (uri && mDocument) {
mDocument->NotifyURIVisitednessChanged(uri);
}
return NS_OK;
}
if (!nsCRT::strcmp(aTopic, "agent-sheet-added") && mStyleSet) {
AddAgentSheet(aSubject);
return NS_OK;
}
if (!nsCRT::strcmp(aTopic, "user-sheet-added") && mStyleSet) {
AddUserSheet(aSubject);
return NS_OK;
}
if (!nsCRT::strcmp(aTopic, "agent-sheet-removed") && mStyleSet) {
RemoveSheet(nsStyleSet::eAgentSheet, aSubject);
return NS_OK;
}
if (!nsCRT::strcmp(aTopic, "user-sheet-removed") && mStyleSet) {
RemoveSheet(nsStyleSet::eUserSheet, aSubject);
return NS_OK;
}
NS_WARNING("unrecognized topic in PresShell::Observe");
return NS_ERROR_FAILURE;
}
void
PresShell::EnumeratePlugins(nsIDOMDocument *aDocument,
const nsString &aPluginTag,
nsPluginEnumCallback aCallback)
{
nsCOMPtr<nsIDOMNodeList> nodes;
aDocument->GetElementsByTagName(aPluginTag, getter_AddRefs(nodes));
if (!nodes)
return;
PRUint32 length;
nodes->GetLength(&length);
for (PRUint32 i = 0; i < length; ++i) {
nsCOMPtr<nsIDOMNode> node;
nodes->Item(i, getter_AddRefs(node));
nsCOMPtr<nsIContent> content = do_QueryInterface(node);
if (content)
aCallback(this, content);
}
}
//------------------------------------------------------
// End of protected and private methods on the PresShell
//------------------------------------------------------
// Start of DEBUG only code
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#ifdef NS_DEBUG
#include "nsViewsCID.h"
#include "nsWidgetsCID.h"
#include "nsIDeviceContext.h"
#include "nsIURL.h"
#include "nsILinkHandler.h"
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static NS_DEFINE_CID(kViewManagerCID, NS_VIEW_MANAGER_CID);
static NS_DEFINE_CID(kWidgetCID, NS_CHILD_CID);
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static void
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LogVerifyMessage(nsIFrame* k1, nsIFrame* k2, const char* aMsg)
{
printf("verifyreflow: ");
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nsAutoString name;
if (nsnull != k1) {
nsIFrameDebug* frameDebug;
if (NS_SUCCEEDED(k1->QueryInterface(NS_GET_IID(nsIFrameDebug),
(void**)&frameDebug))) {
frameDebug->GetFrameName(name);
}
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}
else {
name.Assign(NS_LITERAL_STRING("(null)"));
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}
fputs(NS_LossyConvertUTF16toASCII(name).get(), stdout);
printf(" != ");
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if (nsnull != k2) {
nsIFrameDebug* frameDebug;
if (NS_SUCCEEDED(k2->QueryInterface(NS_GET_IID(nsIFrameDebug),
(void**)&frameDebug))) {
frameDebug->GetFrameName(name);
}
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}
else {
name.Assign(NS_LITERAL_STRING("(null)"));
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}
fputs(NS_LossyConvertUTF16toASCII(name).get(), stdout);
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printf(" %s", aMsg);
1998-11-25 21:41:02 +03:00
}
static void
LogVerifyMessage(nsIFrame* k1, nsIFrame* k2, const char* aMsg,
const nsRect& r1, const nsRect& r2)
1998-07-13 23:49:42 +04:00
{
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_LossyConvertUTF16toASCII(name).get(), stdout);
fprintf(stdout, " %p ", (void*)k1);
}
printf("{%d, %d, %d, %d}", r1.x, r1.y, r1.width, r1.height);
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printf(" != \n");
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if (NS_SUCCEEDED(k2->QueryInterface(NS_GET_IID(nsIFrameDebug),
(void**)&frameDebug))) {
fprintf(stdout, " ");
frameDebug->GetFrameName(name);
fputs(NS_LossyConvertUTF16toASCII(name).get(), stdout);
fprintf(stdout, " %p ", (void*)k2);
}
printf("{%d, %d, %d, %d}\n", r2.x, r2.y, r2.width, r2.height);
1998-11-25 21:41:02 +03:00
printf(" %s\n", aMsg);
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}
1998-04-14 00:24:54 +04:00
1999-04-03 22:58:04 +04:00
static PRBool
CompareTrees(nsPresContext* aFirstPresContext, nsIFrame* aFirstFrame,
nsPresContext* aSecondPresContext, nsIFrame* aSecondFrame)
1998-04-14 00:24:54 +04:00
{
if (!aFirstPresContext || !aFirstFrame || !aSecondPresContext || !aSecondFrame)
return PR_TRUE;
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PRBool ok = PR_TRUE;
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nsIAtom* listName = nsnull;
PRInt32 listIndex = 0;
do {
nsIFrame* k1 = aFirstFrame->GetFirstChild(listName);
nsIFrame* k2 = aSecondFrame->GetFirstChild(listName);
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PRInt32 l1 = nsContainerFrame::LengthOf(k1);
PRInt32 l2 = nsContainerFrame::LengthOf(k2);
if (l1 != l2) {
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ok = PR_FALSE;
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LogVerifyMessage(k1, k2, "child counts don't match: ");
printf("%d != %d\n", l1, l2);
if (0 == (VERIFY_REFLOW_ALL & gVerifyReflowFlags)) {
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break;
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}
}
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nsRect r1, r2;
nsIView* v1, *v2;
for (;;) {
if (((nsnull == k1) && (nsnull != k2)) ||
((nsnull != k1) && (nsnull == k2))) {
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ok = PR_FALSE;
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LogVerifyMessage(k1, k2, "child lists are different\n");
break;
}
else if (nsnull != k1) {
// Verify that the frames are the same size
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if (k1->GetRect() != k2->GetRect()) {
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ok = PR_FALSE;
2003-06-30 14:46:59 +04:00
LogVerifyMessage(k1, k2, "(frame rects)", k1->GetRect(), k2->GetRect());
1998-11-25 21:41:02 +03:00
}
1998-07-13 23:49:42 +04:00
1998-11-25 21:41:02 +03:00
// 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.
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v1 = k1->GetView();
v2 = k2->GetView();
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if (((nsnull == v1) && (nsnull != v2)) ||
((nsnull != v1) && (nsnull == v2))) {
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ok = PR_FALSE;
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LogVerifyMessage(k1, k2, "child views are not matched\n");
}
else if (nsnull != v1) {
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if (v1->GetBounds() != v2->GetBounds()) {
LogVerifyMessage(k1, k2, "(view rects)", v1->GetBounds(), v2->GetBounds());
1998-11-25 21:41:02 +03:00
}
1998-07-13 23:49:42 +04:00
2003-06-30 14:46:59 +04:00
nsIWidget* w1 = v1->GetWidget();
nsIWidget* w2 = v2->GetWidget();
1998-11-25 21:41:02 +03:00
if (((nsnull == w1) && (nsnull != w2)) ||
((nsnull != w1) && (nsnull == w2))) {
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ok = PR_FALSE;
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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);
}
1998-07-13 23:49:42 +04:00
}
}
if (!ok && (0 == (VERIFY_REFLOW_ALL & gVerifyReflowFlags))) {
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break;
}
// verify that neither frame has a space manager,
// or they both do and the space managers are equivalent
nsSpaceManager *sm1 = NS_STATIC_CAST(nsSpaceManager*,
k1->GetProperty(nsLayoutAtoms::spaceManagerProperty));
// look at the test frame
nsSpaceManager *sm2 = NS_STATIC_CAST(nsSpaceManager*,
k2->GetProperty(nsLayoutAtoms::spaceManagerProperty));
// 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 ( ;trapIndex<band1.mCount; trapIndex++)
{
PRBool match = (trap1[trapIndex].EqualGeometry(trap2[trapIndex])) &&
trap1[trapIndex].mState == trap2[trapIndex].mState;
if (!match)
{
LogVerifyMessage(k1, k2, "band.mTrapezoids of space managers differs\n");
printf ("index %d\n", trapIndex);
}
}
}
// test the larger maxSize
sm1->GetBandData(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 ( ; trapIndex<band1.mCount; trapIndex++)
{
PRBool match = (trap1[trapIndex].EqualGeometry(trap2[trapIndex])) &&
trap1[trapIndex].mState == trap2[trapIndex].mState;
if (!match)
{
LogVerifyMessage(k1, k2, "band.mTrapezoids of space managers differs\n");
printf ("index %d\n", trapIndex);
}
}
}
}
}
}
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// Compare the sub-trees too
if (!CompareTrees(aFirstPresContext, k1, aSecondPresContext, k2)) {
ok = PR_FALSE;
if (0 == (VERIFY_REFLOW_ALL & gVerifyReflowFlags)) {
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break;
}
}
1998-11-25 21:41:02 +03:00
// Advance to next sibling
2003-06-30 14:46:59 +04:00
k1 = k1->GetNextSibling();
k2 = k2->GetNextSibling();
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}
else {
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break;
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}
}
if (!ok && (0 == (VERIFY_REFLOW_ALL & gVerifyReflowFlags))) {
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break;
1998-07-13 23:49:42 +04:00
}
1998-11-25 21:41:02 +03:00
nsIAtom* listName1 = aFirstFrame->GetAdditionalChildListName(listIndex);
nsIAtom* listName2 = aSecondFrame->GetAdditionalChildListName(listIndex);
1998-11-25 21:41:02 +03:00
listIndex++;
if (listName1 != listName2) {
if (0 == (VERIFY_REFLOW_ALL & gVerifyReflowFlags)) {
ok = PR_FALSE;
}
1998-11-25 21:41:02 +03:00
LogVerifyMessage(k1, k2, "child list names are not matched: ");
nsAutoString tmp;
if (nsnull != listName1) {
listName1->ToString(tmp);
fputs(NS_LossyConvertUTF16toASCII(tmp).get(), stdout);
1998-11-25 21:41:02 +03:00
}
else
fputs("(null)", stdout);
printf(" != ");
1998-11-25 21:41:02 +03:00
if (nsnull != listName2) {
listName2->ToString(tmp);
fputs(NS_LossyConvertUTF16toASCII(tmp).get(), stdout);
1998-11-25 21:41:02 +03:00
}
else
fputs("(null)", stdout);
printf("\n");
1998-11-25 21:41:02 +03:00
break;
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}
1998-11-25 21:41:02 +03:00
listName = listName1;
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} while (ok && (listName != nsnull));
return ok;
}
#endif
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#if 0
static nsIFrame*
FindTopFrame(nsIFrame* aRoot)
{
2003-06-30 14:46:59 +04:00
if (aRoot) {
nsIContent* content = aRoot->GetContent();
if (content) {
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nsIAtom* tag;
content->GetTag(tag);
if (nsnull != tag) {
NS_RELEASE(tag);
return aRoot;
}
}
// Try one of the children
nsIFrame* kid = aRoot->GetFirstChild(nsnull);
1999-04-03 22:58:04 +04:00
while (nsnull != kid) {
nsIFrame* result = FindTopFrame(kid);
if (nsnull != result) {
return result;
}
2003-06-30 14:46:59 +04:00
kid = kid->GetNextSibling();
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}
}
return nsnull;
}
#endif
1998-07-13 23:49:42 +04:00
#ifdef DEBUG
nsresult
PresShell::CloneStyleSet(nsStyleSet* aSet, nsStyleSet** aResult)
{
nsStyleSet *clone = new nsStyleSet();
if (!clone) {
return NS_ERROR_OUT_OF_MEMORY;
}
PRInt32 i, n = aSet->SheetCount(nsStyleSet::eOverrideSheet);
for (i = 0; i < n; i++) {
nsIStyleSheet* ss = aSet->StyleSheetAt(nsStyleSet::eOverrideSheet, i);
if (ss)
clone->AppendStyleSheet(nsStyleSet::eOverrideSheet, ss);
}
n = aSet->SheetCount(nsStyleSet::eDocSheet);
for (i = 0; i < n; i++) {
nsIStyleSheet* ss = aSet->StyleSheetAt(nsStyleSet::eDocSheet, i);
if (ss)
clone->AddDocStyleSheet(ss, mDocument);
}
n = aSet->SheetCount(nsStyleSet::eUserSheet);
for (i = 0; i < n; i++) {
nsIStyleSheet* ss = aSet->StyleSheetAt(nsStyleSet::eUserSheet, i);
if (ss)
clone->AppendStyleSheet(nsStyleSet::eUserSheet, ss);
}
n = aSet->SheetCount(nsStyleSet::eAgentSheet);
for (i = 0; i < n; i++) {
nsIStyleSheet* ss = aSet->StyleSheetAt(nsStyleSet::eAgentSheet, i);
if (ss)
clone->AppendStyleSheet(nsStyleSet::eAgentSheet, ss);
}
*aResult = clone;
return NS_OK;
}
1998-07-13 23:49:42 +04:00
// After an incremental reflow, we verify the correctness by doing a
// full reflow into a fresh frame tree.
PRBool
1998-07-13 23:49:42 +04:00
PresShell::VerifyIncrementalReflow()
{
if (VERIFY_REFLOW_NOISY & gVerifyReflowFlags) {
printf("Building Verification Tree...\n");
}
1998-07-13 23:49:42 +04:00
// All the stuff we are creating that needs releasing
nsPresContext* cx;
1998-07-13 23:49:42 +04:00
nsIViewManager* vm;
nsIPresShell* sh;
// Create a presentation context to view the new frame tree
NS_IF_ADDREF(cx = new nsPresContext(mDocument,
mPresContext->IsPaginated() ?
nsPresContext::eContext_PrintPreview :
nsPresContext::eContext_Galley));
if (!cx)
return NS_ERROR_OUT_OF_MEMORY;
nsCOMPtr<nsISupports> container = mPresContext->GetContainer();
if (container) {
1999-04-03 22:58:04 +04:00
cx->SetContainer(container);
nsCOMPtr<nsILinkHandler> lh = do_QueryInterface(container);
if (lh) {
cx->SetLinkHandler(lh);
}
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}
nsIDeviceContext *dc = mPresContext->DeviceContext();
nsresult rv = cx->Init(dc);
NS_ENSURE_SUCCESS(rv, rv);
1998-07-13 23:49:42 +04:00
2004-05-17 20:29:13 +04:00
// Get our scrolling preference
nsIView* rootView;
mViewManager->GetRootView(rootView);
void* nativeParentWidget = rootView->GetWidget()->GetNativeData(NS_NATIVE_WIDGET);
1998-07-13 23:49:42 +04:00
// Create a new view manager.
rv = CallCreateInstance(kViewManagerCID, &vm);
NS_ASSERTION(NS_SUCCEEDED (rv), "failed to create view manager");
2004-05-17 20:29:13 +04:00
rv = vm->Init(dc);
NS_ASSERTION(NS_SUCCEEDED (rv), "failed to init view manager");
1998-08-28 06:54:06 +04:00
1998-07-13 23:49:42 +04:00
// Create a child window of the parent that is our "root view/window"
// Create a view
nsRect tbounds = mPresContext->GetVisibleArea();
nsIView* view = vm->CreateView(tbounds, nsnull);
NS_ASSERTION(view, "failed to create view");
if (!view)
return PR_FALSE;
//now create the widget for the view
2004-05-17 20:29:13 +04:00
rv = view->CreateWidget(kWidgetCID, nsnull, nativeParentWidget, PR_TRUE);
NS_ASSERTION(NS_SUCCEEDED(rv), "failed to create scroll view widget");
2004-05-17 20:29:13 +04:00
// Setup hierarchical relationship in view manager
vm->SetRootView(view);
1998-07-13 23:49:42 +04:00
// Make the new presentation context the same size as our
// presentation context.
nsRect r = mPresContext->GetVisibleArea();
1998-07-13 23:49:42 +04:00
cx->SetVisibleArea(r);
1999-04-03 22:58:04 +04:00
1998-11-25 21:41:02 +03:00
// Create a new presentation shell to view the document. Use the
// exact same style information that this document has.
nsAutoPtr<nsStyleSet> newSet;
2004-01-09 00:10:33 +03:00
rv = CloneStyleSet(mStyleSet, getter_Transfers(newSet));
1999-04-03 22:58:04 +04:00
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_SUCCEEDED (rv), "failed to create presentation shell");
1999-04-03 22:58:04 +04:00
vm->SetViewObserver((nsIViewObserver *)((PresShell*)sh));
rv = sh->InitialReflow(r.width, r.height);
NS_ENSURE_SUCCESS(rv, rv);
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");
}
1998-07-13 23:49:42 +04:00
// Now that the document has been reflowed, use its frame tree to
// compare against our frame tree.
nsIFrame* root1 = FrameManager()->GetRootFrame();
nsIFrame* root2 = sh->FrameManager()->GetRootFrame();
PRBool ok = CompareTrees(mPresContext, root1, cx, root2);
if (!ok && (VERIFY_REFLOW_NOISY & gVerifyReflowFlags)) {
printf("Verify reflow failed, primary tree:\n");
nsIFrameDebug* frameDebug;
if (NS_SUCCEEDED(root1->QueryInterface(NS_GET_IID(nsIFrameDebug),
(void**)&frameDebug))) {
frameDebug->List(stdout, 0);
}
printf("Verification tree:\n");
if (NS_SUCCEEDED(root2->QueryInterface(NS_GET_IID(nsIFrameDebug),
(void**)&frameDebug))) {
frameDebug->List(stdout, 0);
}
1999-04-03 22:58:04 +04:00
}
1998-07-13 23:49:42 +04:00
1999-04-03 22:58:04 +04:00
cx->SetContainer(nsnull);
1998-07-13 23:49:42 +04:00
NS_RELEASE(cx);
1999-04-03 22:58:04 +04:00
sh->EndObservingDocument();
1998-07-13 23:49:42 +04:00
NS_RELEASE(sh);
1999-04-03 22:58:04 +04:00
NS_RELEASE(vm);
if (VERIFY_REFLOW_NOISY & gVerifyReflowFlags) {
printf("Finished Verifying Reflow...\n");
}
return ok;
1998-07-13 23:49:42 +04:00
}
// Layout debugging hooks
void
PresShell::ListStyleContexts(nsIFrame *aRootFrame, FILE *out, PRInt32 aIndent)
{
nsStyleContext *sc = aRootFrame->GetStyleContext();
if (sc)
sc->List(out, aIndent);
}
void
PresShell::ListStyleSheets(FILE *out, PRInt32 aIndent)
{
PRInt32 sheetCount = mStyleSet->SheetCount(nsStyleSet::eDocSheet);
for (PRInt32 i = 0; i < sheetCount; ++i) {
mStyleSet->StyleSheetAt(nsStyleSet::eDocSheet, i)->List(out, aIndent);
fputs("\n", out);
}
}
void
PresShell::VerifyStyleTree()
{
VERIFY_STYLE_TREE;
}
1998-07-13 23:49:42 +04:00
#endif
Fix for bug #15360: Drag Selecting, Clicking, then Clicking leaves caret cruft. r=troy@netscape.com,kipp@netscape.com,evaughan@netscape.com,beard@netscape.com layout/html/base/src/nsGfxScrollFrame.cpp - Renamed all occurrences of ScrollPositionChanged() to to ScrollPositionDidChange() to match changes made to nsIScrollPositionListener. - Added ScrollPositionWillChange() stub method. layout/html/base/src/nsPresShell.cpp - Added PresShellViewEventListener class that implements the nsIScrollPositionListener and nsICompositeListener view interfaces. This allows us to turn caret rendering on and off when scrolling and repainting to prevent leaving caret cruft on the screen. - PresShellViewEventListener is created in InitialReflow(), and released in ~PresShell(). view/public/Makefile.in view/public/makefile.win view/public/MANIFEST - Added nsICompositeListener to list of files to be exported. view/public/nsICompositeListener.h - New file. Implementers of this interface can register themselves with the view manager to receive notification before and after a view is composited/refreshed. view/public/nsIScrollPositionListener.h - Added a ScrollPositionWillChange() method. - Changed ScrollPositionChanged() to ScrollPositionDidChange(). view/public/nsIViewManager.h - Added AddCompositeListener() and RemoveCompositeListener methods. view/src/nsScrollingView.cpp view/src/nsScrollingView.h - Added NotifyScrollPositionWillChange() and NotifyScrollPositionDidChange() methods. - Modified HandleScrollEvent() to call NotifyScrollPositionWill/DidChange() methods. Added temporary offsetX and offsetY variables to allow us to calculate new offsets without changing mOffsetX and mOffsetY before notifications are sent out. view/src/nsScrollPortView.cpp - Changed ScrollPositionChanged() to ScrollPositionDidChange(). - Modified ScrollTo() to call the listener's ScrollPositionWillChange() method. view/src/nsViewManager.cpp view/src/nsViewManager.h - Added AddCompositeListener() and RemoveCompositeListener() methods. - Added support for CompositeListener notifications in the Refresh() methods for regions and rects. - Fix for bug #15901: [DOGFOOD] Selected text does not clear when you type Modified UpdateView() so that rects with zero width and height are no longer added to our damage region. r=beard@netscape.com
1999-10-15 08:29:30 +04:00
// PresShellViewEventListener
NS_IMPL_ISUPPORTS2(PresShellViewEventListener, nsIScrollPositionListener, nsICompositeListener)
PresShellViewEventListener::PresShellViewEventListener()
{
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)
{
2000-04-27 11:37:12 +04:00
nsCOMPtr<nsISelectionController> selCon = do_QueryInterface(mPresShell);
if (selCon)
{
result = selCon->GetCaretEnabled(&mWasVisible);
Fix for bug #15360: Drag Selecting, Clicking, then Clicking leaves caret cruft. r=troy@netscape.com,kipp@netscape.com,evaughan@netscape.com,beard@netscape.com layout/html/base/src/nsGfxScrollFrame.cpp - Renamed all occurrences of ScrollPositionChanged() to to ScrollPositionDidChange() to match changes made to nsIScrollPositionListener. - Added ScrollPositionWillChange() stub method. layout/html/base/src/nsPresShell.cpp - Added PresShellViewEventListener class that implements the nsIScrollPositionListener and nsICompositeListener view interfaces. This allows us to turn caret rendering on and off when scrolling and repainting to prevent leaving caret cruft on the screen. - PresShellViewEventListener is created in InitialReflow(), and released in ~PresShell(). view/public/Makefile.in view/public/makefile.win view/public/MANIFEST - Added nsICompositeListener to list of files to be exported. view/public/nsICompositeListener.h - New file. Implementers of this interface can register themselves with the view manager to receive notification before and after a view is composited/refreshed. view/public/nsIScrollPositionListener.h - Added a ScrollPositionWillChange() method. - Changed ScrollPositionChanged() to ScrollPositionDidChange(). view/public/nsIViewManager.h - Added AddCompositeListener() and RemoveCompositeListener methods. view/src/nsScrollingView.cpp view/src/nsScrollingView.h - Added NotifyScrollPositionWillChange() and NotifyScrollPositionDidChange() methods. - Modified HandleScrollEvent() to call NotifyScrollPositionWill/DidChange() methods. Added temporary offsetX and offsetY variables to allow us to calculate new offsets without changing mOffsetX and mOffsetY before notifications are sent out. view/src/nsScrollPortView.cpp - Changed ScrollPositionChanged() to ScrollPositionDidChange(). - Modified ScrollTo() to call the listener's ScrollPositionWillChange() method. view/src/nsViewManager.cpp view/src/nsViewManager.h - Added AddCompositeListener() and RemoveCompositeListener() methods. - Added support for CompositeListener notifications in the Refresh() methods for regions and rects. - Fix for bug #15901: [DOGFOOD] Selected text does not clear when you type Modified UpdateView() so that rects with zero width and height are no longer added to our damage region. r=beard@netscape.com
1999-10-15 08:29:30 +04:00
2000-04-27 11:37:12 +04:00
if (NS_SUCCEEDED(result) && mWasVisible)
result = selCon->SetCaretEnabled(PR_FALSE);
}
Fix for bug #15360: Drag Selecting, Clicking, then Clicking leaves caret cruft. r=troy@netscape.com,kipp@netscape.com,evaughan@netscape.com,beard@netscape.com layout/html/base/src/nsGfxScrollFrame.cpp - Renamed all occurrences of ScrollPositionChanged() to to ScrollPositionDidChange() to match changes made to nsIScrollPositionListener. - Added ScrollPositionWillChange() stub method. layout/html/base/src/nsPresShell.cpp - Added PresShellViewEventListener class that implements the nsIScrollPositionListener and nsICompositeListener view interfaces. This allows us to turn caret rendering on and off when scrolling and repainting to prevent leaving caret cruft on the screen. - PresShellViewEventListener is created in InitialReflow(), and released in ~PresShell(). view/public/Makefile.in view/public/makefile.win view/public/MANIFEST - Added nsICompositeListener to list of files to be exported. view/public/nsICompositeListener.h - New file. Implementers of this interface can register themselves with the view manager to receive notification before and after a view is composited/refreshed. view/public/nsIScrollPositionListener.h - Added a ScrollPositionWillChange() method. - Changed ScrollPositionChanged() to ScrollPositionDidChange(). view/public/nsIViewManager.h - Added AddCompositeListener() and RemoveCompositeListener methods. view/src/nsScrollingView.cpp view/src/nsScrollingView.h - Added NotifyScrollPositionWillChange() and NotifyScrollPositionDidChange() methods. - Modified HandleScrollEvent() to call NotifyScrollPositionWill/DidChange() methods. Added temporary offsetX and offsetY variables to allow us to calculate new offsets without changing mOffsetX and mOffsetY before notifications are sent out. view/src/nsScrollPortView.cpp - Changed ScrollPositionChanged() to ScrollPositionDidChange(). - Modified ScrollTo() to call the listener's ScrollPositionWillChange() method. view/src/nsViewManager.cpp view/src/nsViewManager.h - Added AddCompositeListener() and RemoveCompositeListener() methods. - Added support for CompositeListener notifications in the Refresh() methods for regions and rects. - Fix for bug #15901: [DOGFOOD] Selected text does not clear when you type Modified UpdateView() so that rects with zero width and height are no longer added to our damage region. r=beard@netscape.com
1999-10-15 08:29:30 +04:00
}
++mCallCount;
return result;
}
nsresult
PresShellViewEventListener::RestoreCaretVisibility()
{
nsresult result = NS_OK;
--mCallCount;
if (mPresShell && 0 == mCallCount && mWasVisible)
2000-04-27 11:37:12 +04:00
{
nsCOMPtr<nsISelectionController> selCon = do_QueryInterface(mPresShell);
if (selCon)
result = selCon->SetCaretEnabled(PR_TRUE);
}
Fix for bug #15360: Drag Selecting, Clicking, then Clicking leaves caret cruft. r=troy@netscape.com,kipp@netscape.com,evaughan@netscape.com,beard@netscape.com layout/html/base/src/nsGfxScrollFrame.cpp - Renamed all occurrences of ScrollPositionChanged() to to ScrollPositionDidChange() to match changes made to nsIScrollPositionListener. - Added ScrollPositionWillChange() stub method. layout/html/base/src/nsPresShell.cpp - Added PresShellViewEventListener class that implements the nsIScrollPositionListener and nsICompositeListener view interfaces. This allows us to turn caret rendering on and off when scrolling and repainting to prevent leaving caret cruft on the screen. - PresShellViewEventListener is created in InitialReflow(), and released in ~PresShell(). view/public/Makefile.in view/public/makefile.win view/public/MANIFEST - Added nsICompositeListener to list of files to be exported. view/public/nsICompositeListener.h - New file. Implementers of this interface can register themselves with the view manager to receive notification before and after a view is composited/refreshed. view/public/nsIScrollPositionListener.h - Added a ScrollPositionWillChange() method. - Changed ScrollPositionChanged() to ScrollPositionDidChange(). view/public/nsIViewManager.h - Added AddCompositeListener() and RemoveCompositeListener methods. view/src/nsScrollingView.cpp view/src/nsScrollingView.h - Added NotifyScrollPositionWillChange() and NotifyScrollPositionDidChange() methods. - Modified HandleScrollEvent() to call NotifyScrollPositionWill/DidChange() methods. Added temporary offsetX and offsetY variables to allow us to calculate new offsets without changing mOffsetX and mOffsetY before notifications are sent out. view/src/nsScrollPortView.cpp - Changed ScrollPositionChanged() to ScrollPositionDidChange(). - Modified ScrollTo() to call the listener's ScrollPositionWillChange() method. view/src/nsViewManager.cpp view/src/nsViewManager.h - Added AddCompositeListener() and RemoveCompositeListener() methods. - Added support for CompositeListener notifications in the Refresh() methods for regions and rects. - Fix for bug #15901: [DOGFOOD] Selected text does not clear when you type Modified UpdateView() so that rects with zero width and height are no longer added to our damage region. r=beard@netscape.com
1999-10-15 08:29:30 +04:00
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 NS_OK;
Fix for bug #15360: Drag Selecting, Clicking, then Clicking leaves caret cruft. r=troy@netscape.com,kipp@netscape.com,evaughan@netscape.com,beard@netscape.com layout/html/base/src/nsGfxScrollFrame.cpp - Renamed all occurrences of ScrollPositionChanged() to to ScrollPositionDidChange() to match changes made to nsIScrollPositionListener. - Added ScrollPositionWillChange() stub method. layout/html/base/src/nsPresShell.cpp - Added PresShellViewEventListener class that implements the nsIScrollPositionListener and nsICompositeListener view interfaces. This allows us to turn caret rendering on and off when scrolling and repainting to prevent leaving caret cruft on the screen. - PresShellViewEventListener is created in InitialReflow(), and released in ~PresShell(). view/public/Makefile.in view/public/makefile.win view/public/MANIFEST - Added nsICompositeListener to list of files to be exported. view/public/nsICompositeListener.h - New file. Implementers of this interface can register themselves with the view manager to receive notification before and after a view is composited/refreshed. view/public/nsIScrollPositionListener.h - Added a ScrollPositionWillChange() method. - Changed ScrollPositionChanged() to ScrollPositionDidChange(). view/public/nsIViewManager.h - Added AddCompositeListener() and RemoveCompositeListener methods. view/src/nsScrollingView.cpp view/src/nsScrollingView.h - Added NotifyScrollPositionWillChange() and NotifyScrollPositionDidChange() methods. - Modified HandleScrollEvent() to call NotifyScrollPositionWill/DidChange() methods. Added temporary offsetX and offsetY variables to allow us to calculate new offsets without changing mOffsetX and mOffsetY before notifications are sent out. view/src/nsScrollPortView.cpp - Changed ScrollPositionChanged() to ScrollPositionDidChange(). - Modified ScrollTo() to call the listener's ScrollPositionWillChange() method. view/src/nsViewManager.cpp view/src/nsViewManager.h - Added AddCompositeListener() and RemoveCompositeListener() methods. - Added support for CompositeListener notifications in the Refresh() methods for regions and rects. - Fix for bug #15901: [DOGFOOD] Selected text does not clear when you type Modified UpdateView() so that rects with zero width and height are no longer added to our damage region. r=beard@netscape.com
1999-10-15 08:29:30 +04:00
}
NS_IMETHODIMP
PresShellViewEventListener::DidRefreshRegion(nsIViewManager *aViewManager,
nsIView *aView,
nsIRenderingContext *aContext,
nsIRegion *aRegion,
PRUint32 aUpdateFlags)
{
nsCSSRendering::DidPaint();
return NS_OK;
Fix for bug #15360: Drag Selecting, Clicking, then Clicking leaves caret cruft. r=troy@netscape.com,kipp@netscape.com,evaughan@netscape.com,beard@netscape.com layout/html/base/src/nsGfxScrollFrame.cpp - Renamed all occurrences of ScrollPositionChanged() to to ScrollPositionDidChange() to match changes made to nsIScrollPositionListener. - Added ScrollPositionWillChange() stub method. layout/html/base/src/nsPresShell.cpp - Added PresShellViewEventListener class that implements the nsIScrollPositionListener and nsICompositeListener view interfaces. This allows us to turn caret rendering on and off when scrolling and repainting to prevent leaving caret cruft on the screen. - PresShellViewEventListener is created in InitialReflow(), and released in ~PresShell(). view/public/Makefile.in view/public/makefile.win view/public/MANIFEST - Added nsICompositeListener to list of files to be exported. view/public/nsICompositeListener.h - New file. Implementers of this interface can register themselves with the view manager to receive notification before and after a view is composited/refreshed. view/public/nsIScrollPositionListener.h - Added a ScrollPositionWillChange() method. - Changed ScrollPositionChanged() to ScrollPositionDidChange(). view/public/nsIViewManager.h - Added AddCompositeListener() and RemoveCompositeListener methods. view/src/nsScrollingView.cpp view/src/nsScrollingView.h - Added NotifyScrollPositionWillChange() and NotifyScrollPositionDidChange() methods. - Modified HandleScrollEvent() to call NotifyScrollPositionWill/DidChange() methods. Added temporary offsetX and offsetY variables to allow us to calculate new offsets without changing mOffsetX and mOffsetY before notifications are sent out. view/src/nsScrollPortView.cpp - Changed ScrollPositionChanged() to ScrollPositionDidChange(). - Modified ScrollTo() to call the listener's ScrollPositionWillChange() method. view/src/nsViewManager.cpp view/src/nsViewManager.h - Added AddCompositeListener() and RemoveCompositeListener() methods. - Added support for CompositeListener notifications in the Refresh() methods for regions and rects. - Fix for bug #15901: [DOGFOOD] Selected text does not clear when you type Modified UpdateView() so that rects with zero width and height are no longer added to our damage region. r=beard@netscape.com
1999-10-15 08:29:30 +04:00
}
NS_IMETHODIMP
PresShellViewEventListener::WillRefreshRect(nsIViewManager *aViewManager,
nsIView *aView,
nsIRenderingContext *aContext,
const nsRect *aRect,
PRUint32 aUpdateFlags)
{
return NS_OK;
Fix for bug #15360: Drag Selecting, Clicking, then Clicking leaves caret cruft. r=troy@netscape.com,kipp@netscape.com,evaughan@netscape.com,beard@netscape.com layout/html/base/src/nsGfxScrollFrame.cpp - Renamed all occurrences of ScrollPositionChanged() to to ScrollPositionDidChange() to match changes made to nsIScrollPositionListener. - Added ScrollPositionWillChange() stub method. layout/html/base/src/nsPresShell.cpp - Added PresShellViewEventListener class that implements the nsIScrollPositionListener and nsICompositeListener view interfaces. This allows us to turn caret rendering on and off when scrolling and repainting to prevent leaving caret cruft on the screen. - PresShellViewEventListener is created in InitialReflow(), and released in ~PresShell(). view/public/Makefile.in view/public/makefile.win view/public/MANIFEST - Added nsICompositeListener to list of files to be exported. view/public/nsICompositeListener.h - New file. Implementers of this interface can register themselves with the view manager to receive notification before and after a view is composited/refreshed. view/public/nsIScrollPositionListener.h - Added a ScrollPositionWillChange() method. - Changed ScrollPositionChanged() to ScrollPositionDidChange(). view/public/nsIViewManager.h - Added AddCompositeListener() and RemoveCompositeListener methods. view/src/nsScrollingView.cpp view/src/nsScrollingView.h - Added NotifyScrollPositionWillChange() and NotifyScrollPositionDidChange() methods. - Modified HandleScrollEvent() to call NotifyScrollPositionWill/DidChange() methods. Added temporary offsetX and offsetY variables to allow us to calculate new offsets without changing mOffsetX and mOffsetY before notifications are sent out. view/src/nsScrollPortView.cpp - Changed ScrollPositionChanged() to ScrollPositionDidChange(). - Modified ScrollTo() to call the listener's ScrollPositionWillChange() method. view/src/nsViewManager.cpp view/src/nsViewManager.h - Added AddCompositeListener() and RemoveCompositeListener() methods. - Added support for CompositeListener notifications in the Refresh() methods for regions and rects. - Fix for bug #15901: [DOGFOOD] Selected text does not clear when you type Modified UpdateView() so that rects with zero width and height are no longer added to our damage region. r=beard@netscape.com
1999-10-15 08:29:30 +04:00
}
NS_IMETHODIMP
PresShellViewEventListener::DidRefreshRect(nsIViewManager *aViewManager,
nsIView *aView,
nsIRenderingContext *aContext,
const nsRect *aRect,
PRUint32 aUpdateFlags)
{
nsCSSRendering::DidPaint();
return NS_OK;
Fix for bug #15360: Drag Selecting, Clicking, then Clicking leaves caret cruft. r=troy@netscape.com,kipp@netscape.com,evaughan@netscape.com,beard@netscape.com layout/html/base/src/nsGfxScrollFrame.cpp - Renamed all occurrences of ScrollPositionChanged() to to ScrollPositionDidChange() to match changes made to nsIScrollPositionListener. - Added ScrollPositionWillChange() stub method. layout/html/base/src/nsPresShell.cpp - Added PresShellViewEventListener class that implements the nsIScrollPositionListener and nsICompositeListener view interfaces. This allows us to turn caret rendering on and off when scrolling and repainting to prevent leaving caret cruft on the screen. - PresShellViewEventListener is created in InitialReflow(), and released in ~PresShell(). view/public/Makefile.in view/public/makefile.win view/public/MANIFEST - Added nsICompositeListener to list of files to be exported. view/public/nsICompositeListener.h - New file. Implementers of this interface can register themselves with the view manager to receive notification before and after a view is composited/refreshed. view/public/nsIScrollPositionListener.h - Added a ScrollPositionWillChange() method. - Changed ScrollPositionChanged() to ScrollPositionDidChange(). view/public/nsIViewManager.h - Added AddCompositeListener() and RemoveCompositeListener methods. view/src/nsScrollingView.cpp view/src/nsScrollingView.h - Added NotifyScrollPositionWillChange() and NotifyScrollPositionDidChange() methods. - Modified HandleScrollEvent() to call NotifyScrollPositionWill/DidChange() methods. Added temporary offsetX and offsetY variables to allow us to calculate new offsets without changing mOffsetX and mOffsetY before notifications are sent out. view/src/nsScrollPortView.cpp - Changed ScrollPositionChanged() to ScrollPositionDidChange(). - Modified ScrollTo() to call the listener's ScrollPositionWillChange() method. view/src/nsViewManager.cpp view/src/nsViewManager.h - Added AddCompositeListener() and RemoveCompositeListener() methods. - Added support for CompositeListener notifications in the Refresh() methods for regions and rects. - Fix for bug #15901: [DOGFOOD] Selected text does not clear when you type Modified UpdateView() so that rects with zero width and height are no longer added to our damage region. r=beard@netscape.com
1999-10-15 08:29:30 +04:00
}
//=============================================================
//=============================================================
//-- Debug Reflow Counts
//=============================================================
//=============================================================
#ifdef MOZ_REFLOW_PERF
//-------------------------------------------------------------
NS_IMETHODIMP
PresShell::DumpReflows()
{
if (mReflowCountMgr) {
nsCAutoString uriStr;
if (mDocument) {
nsIURI *uri = mDocument->GetDocumentURI();
if (uri) {
uri->GetPath(uriStr);
}
}
mReflowCountMgr->DisplayTotals(uriStr.get());
mReflowCountMgr->DisplayHTMLTotals(uriStr.get());
mReflowCountMgr->DisplayDiffsInTotals("Differences");
}
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, nsPresContext* 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;i<NUM_REFLOW_TYPES;i++) {
mTotals[i] = 0;
}
}
//------------------------------------------------------------------
void ReflowCounter::SetTotalsCache()
{
for (PRUint32 i=0;i<NUM_REFLOW_TYPES;i++) {
mCacheTotals[i] = mTotals[i];
}
}
//------------------------------------------------------------------
void ReflowCounter::CalcDiffInTotals()
{
for (PRUint32 i=0;i<NUM_REFLOW_TYPES;i++) {
mCacheTotals[i] = mTotals[i] - mCacheTotals[i];
}
}
//------------------------------------------------------------------
void ReflowCounter::DisplayTotals(const char * aStr)
{
DisplayTotals(mTotals, aStr?aStr:"Totals");
}
//------------------------------------------------------------------
void ReflowCounter::DisplayDiffTotals(const char * aStr)
{
DisplayTotals(mCacheTotals, aStr?aStr:"Diff Totals");
}
//------------------------------------------------------------------
void ReflowCounter::DisplayHTMLTotals(const char * aStr)
{
DisplayHTMLTotals(mTotals, aStr?aStr:"Totals");
}
//------------------------------------------------------------------
void ReflowCounter::DisplayTotals(PRUint32 * aArray, const char * aTitle)
{
// figure total
PRUint32 total = 0;
PRUint32 i;
for (i=0;i<NUM_REFLOW_TYPES;i++) {
total += aArray[i];
}
if (total == 0) {
return;
}
ReflowCounter * gTots = (ReflowCounter *)mMgr->LookUp(kGrandTotalsStr);
printf("%25s\t", aTitle);
for (i=0;i<NUM_REFLOW_TYPES;i++) {
printf("%d\t", aArray[i]);
if (gTots != this && aArray[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;i<NUM_REFLOW_TYPES;i++) {
total += aArray[i];
}
if (total == 0) {
return;
}
ReflowCounter * gTots = (ReflowCounter *)mMgr->LookUp(kGrandTotalsStr);
FILE * fd = mMgr->GetOutFile();
if (!fd) {
return;
}
fprintf(fd, "<tr><td><center>%s</center></td>", aTitle);
for (i=0;i<NUM_REFLOW_TYPES;i++) {
fprintf(fd, "<td><center>");
if (aArray[i]) {
fprintf(fd, "%d", aArray[i]);
} else {
fprintf(fd, "&nbsp;");
}
fprintf(fd, "</center></td>");
if (gTots != this && aArray[i] > 0) {
gTots->Add((nsReflowReason)i, aArray[i]);
}
}
fprintf(fd, "<td><center>%d</center></td></tr>\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", (void*)aFrame);
IndiReflowCounter * counter = (IndiReflowCounter *)PL_HashTableLookup(mIndiFrameCounts, key);
if (counter == nsnull) {
counter = new IndiReflowCounter(this);
NS_ASSERTION(counter != nsnull, "null ptr");
counter->mFrame = aFrame;
counter->mName.AssignASCII(aName);
PL_HashTableAdd(mIndiFrameCounts, key, counter);
}
// this eliminates extra counts from super classes
if (counter != nsnull && counter->mName.EqualsASCII(aName)) {
counter->mCount++;
counter->mCounter.Add(aType, 1);
}
}
}
//------------------------------------------------------------------
void ReflowCountMgr::PaintCount(const char * aName,
nsIRenderingContext* aRenderingContext,
nsPresContext* aPresContext,
nsIFrame* aFrame,
PRUint32 aColor)
{
if (mPaintFrameByFrameCounts &&
nsnull != mIndiFrameCounts &&
aFrame != nsnull) {
char * key = new char[16];
sprintf(key, "%p", (void*)aFrame);
IndiReflowCounter * counter = (IndiReflowCounter *)PL_HashTableLookup(mIndiFrameCounts, key);
if (counter != nsnull && counter->mName.EqualsASCII(aName)) {
aRenderingContext->PushState();
nsFont font("Times", NS_FONT_STYLE_NORMAL,NS_FONT_VARIANT_NORMAL,
NS_FONT_WEIGHT_NORMAL,0,NSIntPointsToTwips(8));
nsCOMPtr<nsIFontMetrics> fm = aPresContext->GetMetricsFor(font);
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);
PRUint32 color;
PRUint32 color2;
if (aColor != 0) {
color = aColor;
color2 = NS_RGB(0,0,0);
} else {
PRUint8 rc = 0, gc = 0, bc = 0;
if (counter->mCount < 5) {
rc = 255;
gc = 255;
} else if ( counter->mCount < 11) {
gc = 255;
} else {
rc = 255;
}
color = NS_RGB(rc,gc,bc);
color2 = NS_RGB(rc/2,gc/2,bc/2);
}
nsRect rect(0,0, width+15, height+15);
aRenderingContext->SetColor(NS_RGB(0,0,0));
aRenderingContext->FillRect(rect);
aRenderingContext->SetColor(color2);
aRenderingContext->DrawString(buf, strlen(buf), x+15,y+15);
aRenderingContext->SetColor(color);
aRenderingContext->DrawString(buf, strlen(buf), x,y);
aRenderingContext->PopState();
}
}
}
//------------------------------------------------------------------
PRIntn ReflowCountMgr::RemoveItems(PLHashEntry *he, PRIntn i, void *arg)
{
char *str = (char *)he->key;
ReflowCounter * counter = (ReflowCounter *)he->value;
delete counter;
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;i<NUM_REFLOW_TYPES+1;i++) {
printf("\t%s", title[i]);
}
printf("\n");
for (i=0;i<78;i++) {
printf("-");
}
printf("\n");
PL_HashTableEnumerateEntries(mCounts, DoSingleTotal, this);
}
}
static void RecurseIndiTotals(nsPresContext* aPresContext,
PLHashTable * aHT,
nsIFrame * aParentFrame,
PRInt32 aLevel)
{
if (aParentFrame == nsnull) {
return;
}
char key[16];
sprintf(key, "%p", (void*)aParentFrame);
IndiReflowCounter * counter = (IndiReflowCounter *)PL_HashTableLookup(aHT, key);
if (counter) {
counter->mHasBeenOutput = PR_TRUE;
char * name = ToNewCString(counter->mName);
for (PRInt32 i=0;i<aLevel;i++) printf(" ");
printf("%s - %p [%d][", name, (void*)aParentFrame, counter->mCount);
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->GetFirstChild(nsnull);
while (child) {
RecurseIndiTotals(aPresContext, aHT, child, aLevel+1);
2003-06-30 14:46:59 +04:00
child = child->GetNextSibling();
}
}
//------------------------------------------------------------------
PRIntn ReflowCountMgr::DoSingleIndi(PLHashEntry *he, PRIntn i, void *arg)
{
IndiReflowCounter * counter = (IndiReflowCounter *)he->value;
if (counter && !counter->mHasBeenOutput) {
char * name = ToNewCString(counter->mName);
printf("%s - %p [%d][", name, (void*)counter->mFrame, counter->mCount);
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->FrameManager()->GetRootFrame();
RecurseIndiTotals(mPresContext, mIndiFrameCounts, rootFrame, 0);
printf("------------------------------------------------\n");
printf("-- Individual Counts of Frames not in Root Tree\n");
printf("------------------------------------------------\n");
PL_HashTableEnumerateEntries(mIndiFrameCounts, DoSingleIndi, this);
}
}
}
//------------------------------------------------------------------
PRIntn ReflowCountMgr::DoSingleHTMLTotal(PLHashEntry *he, PRIntn i, void *arg)
{
char *str = (char *)he->key;
ReflowCounter * counter = (ReflowCounter *)he->value;
counter->DisplayHTMLTotals(str);
return HT_ENUMERATE_NEXT;
}
//------------------------------------------------------------------
void ReflowCountMgr::DoGrandHTMLTotals()
{
if (nsnull != mCounts) {
ReflowCounter * gTots = (ReflowCounter *)PL_HashTableLookup(mCounts, kGrandTotalsStr);
if (gTots == nsnull) {
gTots = new ReflowCounter(this);
PL_HashTableAdd(mCounts, nsCRT::strdup(kGrandTotalsStr), gTots);
} else {
gTots->ClearTotals();
}
static const char * title[] = {"Class", "Init", "Incrm", "Resze", "Style", "Dirty", "Total"};
fprintf(mFD, "<tr>");
PRUint32 i;
for (i=0;i<NUM_REFLOW_TYPES+2;i++) {
fprintf(mFD, "<td><center><b>%s<b></center></td>", title[i]);
}
fprintf(mFD, "</tr>\n");
PL_HashTableEnumerateEntries(mCounts, DoSingleHTMLTotal, this);
}
}
//------------------------------------
void ReflowCountMgr::DisplayTotals(const char * aStr)
{
#ifdef DEBUG_rods
printf("%s\n", aStr?aStr:"No name");
#endif
if (mDumpFrameCounts) {
DoGrandTotals();
}
if (mDumpFrameByFrameCounts) {
DoIndiTotalsTree();
}
}
//------------------------------------
void ReflowCountMgr::DisplayHTMLTotals(const char * aStr)
{
#ifdef WIN32x // XXX NOT XP!
char name[1024];
char * sptr = strrchr(aStr, '/');
if (sptr) {
sptr++;
strcpy(name, sptr);
char * eptr = strrchr(name, '.');
if (eptr) {
*eptr = 0;
}
strcat(name, "_stats.html");
}
mFD = fopen(name, "w");
if (mFD) {
fprintf(mFD, "<html><head><title>Reflow Stats</title></head><body>\n");
const char * title = aStr?aStr:"No name";
fprintf(mFD, "<center><b>%s</b><br><table border=1 style=\"background-color:#e0e0e0\">", title);
DoGrandHTMLTotals();
fprintf(mFD, "</center></table>\n");
fprintf(mFD, "</body></html>\n");
fclose(mFD);
mFD = nsnull;
}
#endif // not XP!
}
//------------------------------------------------------------------
PRIntn ReflowCountMgr::DoClearTotals(PLHashEntry *he, PRIntn i, void *arg)
{
ReflowCounter * counter = (ReflowCounter *)he->value;
counter->ClearTotals();
return HT_ENUMERATE_NEXT;
}
//------------------------------------------------------------------
void ReflowCountMgr::ClearTotals()
{
PL_HashTableEnumerateEntries(mCounts, DoClearTotals, this);
}
//------------------------------------------------------------------
void ReflowCountMgr::ClearGrandTotals()
{
if (nsnull != mCounts) {
ReflowCounter * gTots = (ReflowCounter *)PL_HashTableLookup(mCounts, kGrandTotalsStr);
if (gTots == nsnull) {
gTots = new ReflowCounter(this);
PL_HashTableAdd(mCounts, 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)
{
char buf[8];
PR_snprintf(buf, sizeof(buf), "#%02x%02x%02x",
NS_GET_R(aColor), NS_GET_G(aColor), NS_GET_B(aColor));
CopyASCIItoUTF16(buf, aString);
}