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gecko-dev/layout/generic/nsFrame.cpp

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
*
* The contents of this file are subject to the Netscape Public License
* Version 1.0 (the "NPL"); you may not use this file except in
* compliance with the NPL. You may obtain a copy of the NPL at
* http://www.mozilla.org/NPL/
*
* Software distributed under the NPL is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
* for the specific language governing rights and limitations under the
* NPL.
*
* The Initial Developer of this code under the NPL is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All Rights
* Reserved.
*/
#include "nsCOMPtr.h"
#include "nsFrame.h"
#include "nsFrameList.h"
#include "nsLineLayout.h"
#include "nsIContent.h"
#include "nsIAtom.h"
#include "nsString.h"
#include "nsIStyleContext.h"
#include "nsIView.h"
#include "nsIViewManager.h"
#include "nsIPresContext.h"
#include "nsCRT.h"
#include "nsGUIEvent.h"
#include "nsDOMEvent.h"
#include "nsStyleConsts.h"
#include "nsIPresShell.h"
#include "prlog.h"
#include "prprf.h"
#include <stdarg.h>
#include "nsIPtr.h"
#include "nsISizeOfHandler.h"
#include "nsIDOMText.h"
#include "nsDocument.h"
#include "nsIDeviceContext.h"
#include "nsHTMLIIDs.h"
#include "nsIEventStateManager.h"
#include "nsIDOMSelection.h"
#include "nsIFrameSelection.h"
#include "nsIFocusTracker.h"
#include "nsHTMLParts.h"
#include "nsLayoutAtoms.h"
#include "nsFrameTraversal.h"
#include "nsCOMPtr.h"
// Some Misc #defines
#define SELECTION_DEBUG 0
#define FORCE_SELECTION_UPDATE 1
#define TRACKER_DEBUG 0
#define CALC_DEBUG 0
// Tracker Data
#define kInsertInRemoveList 0
#define kInsertInAddList 1
// Kludged Content stuff
nsIFrame * fFrameArray[1024];
nsIContent * fContentArray[1024];
PRInt32 fMax = -1;
nsIContent * fTrackerContentArrayRemoveList[1024];
PRInt32 fTrackerRemoveListMax = 0;
nsIContent * fTrackerContentArrayAddList[1024];
PRInt32 fTrackerAddListMax = 0;
nsIDocument *gDoc = nsnull;
// [HACK] Foward Declarations
void ForceDrawFrame(nsFrame * aFrame);
#if 0
static void RefreshContentFrames(nsIPresContext& aPresContext, nsIContent * aStartContent, nsIContent * aEndContent);
#endif
PRBool nsFrame::mDoingSelection = PR_FALSE;
PRBool nsFrame::mDidDrag = PR_FALSE;
//----------------------------------------------------------------------
static PRBool gShowFrameBorders = PR_FALSE;
NS_LAYOUT void nsIFrame::ShowFrameBorders(PRBool aEnable)
{
gShowFrameBorders = aEnable;
}
NS_LAYOUT PRBool nsIFrame::GetShowFrameBorders()
{
return gShowFrameBorders;
}
/**
* Note: the log module is created during library initialization which
* means that you cannot perform logging before then.
*/
static PRLogModuleInfo* gLogModule;
static PRLogModuleInfo* gFrameVerifyTreeLogModuleInfo;
static PRBool gFrameVerifyTreeEnable = PRBool(0x55);
NS_LAYOUT PRBool
nsIFrame::GetVerifyTreeEnable()
{
#ifdef NS_DEBUG
if (gFrameVerifyTreeEnable == PRBool(0x55)) {
if (nsnull == gFrameVerifyTreeLogModuleInfo) {
gFrameVerifyTreeLogModuleInfo = PR_NewLogModule("frameverifytree");
gFrameVerifyTreeEnable = 0 != gFrameVerifyTreeLogModuleInfo->level;
printf("Note: frameverifytree is %sabled\n",
gFrameVerifyTreeEnable ? "en" : "dis");
}
}
#endif
return gFrameVerifyTreeEnable;
}
NS_LAYOUT void
nsIFrame::SetVerifyTreeEnable(PRBool aEnabled)
{
gFrameVerifyTreeEnable = aEnabled;
}
NS_LAYOUT PRLogModuleInfo*
nsIFrame::GetLogModuleInfo()
{
if (nsnull == gLogModule) {
gLogModule = PR_NewLogModule("frame");
}
return gLogModule;
}
//----------------------------------------------------------------------
static NS_DEFINE_IID(kIFrameIID, NS_IFRAME_IID);
static NS_DEFINE_IID(kIFocusTracker, NS_IFOCUSTRACKER_IID);
static NS_DEFINE_IID(kIFrameSelection, NS_IFRAMESELECTION_IID);
nsresult
NS_NewEmptyFrame(nsIFrame** aInstancePtrResult)
{
NS_PRECONDITION(nsnull != aInstancePtrResult, "null ptr");
if (nsnull == aInstancePtrResult) {
return NS_ERROR_NULL_POINTER;
}
nsIFrame* it = new nsFrame;
if (nsnull == it) {
return NS_ERROR_OUT_OF_MEMORY;
}
*aInstancePtrResult = it;
return NS_OK;
}
NS_IMPL_ZEROING_OPERATOR_NEW(nsFrame)
nsFrame::nsFrame()
{
mState = NS_FRAME_FIRST_REFLOW | NS_FRAME_SYNC_FRAME_AND_VIEW;
mSelected = PR_FALSE;
}
nsFrame::~nsFrame()
{
NS_IF_RELEASE(mContent);
NS_IF_RELEASE(mStyleContext);
if (nsnull != mView) {
// Break association between view and frame
mView->Destroy();
mView = nsnull;
}
}
/////////////////////////////////////////////////////////////////////////////
// nsISupports
nsresult nsFrame::QueryInterface(const nsIID& aIID, void** aInstancePtr)
{
if (NULL == aInstancePtr) {
return NS_ERROR_NULL_POINTER;
}
static NS_DEFINE_IID(kISupportsIID, NS_ISUPPORTS_IID);
static NS_DEFINE_IID(kClassIID, kIFrameIID);
if (aIID.Equals(kIHTMLReflowIID)) {
*aInstancePtr = (void*)(nsIHTMLReflow*)this;
return NS_OK;
} else if (aIID.Equals(kClassIID) || aIID.Equals(kISupportsIID)) {
*aInstancePtr = (void*)this;
return NS_OK;
}
return NS_NOINTERFACE;
}
nsrefcnt nsFrame::AddRef(void)
{
NS_WARNING("not supported for frames");
return 1;
}
nsrefcnt nsFrame::Release(void)
{
NS_WARNING("not supported for frames");
return 1;
}
/////////////////////////////////////////////////////////////////////////////
// nsIFrame
NS_IMETHODIMP
nsFrame::Init(nsIPresContext& aPresContext,
nsIContent* aContent,
nsIFrame* aParent,
nsIStyleContext* aContext,
nsIFrame* aPrevInFlow)
{
mContent = aContent;
NS_IF_ADDREF(mContent);
mParent = aParent;
return SetStyleContext(&aPresContext, aContext);
}
NS_IMETHODIMP nsFrame::SetInitialChildList(nsIPresContext& aPresContext,
nsIAtom* aListName,
nsIFrame* aChildList)
{
// XXX This shouldn't be getting called at all, but currently is for backwards
// compatility reasons...
#if 0
NS_ERROR("not a container");
return NS_ERROR_UNEXPECTED;
#else
NS_ASSERTION(nsnull == aChildList, "not a container");
return NS_OK;
#endif
}
NS_IMETHODIMP
nsFrame::AppendFrames(nsIPresContext& aPresContext,
nsIPresShell& aPresShell,
nsIAtom* aListName,
nsIFrame* aFrameList)
{
#if 0
return NS_ERROR_UNEXPECTED;
#else
#ifdef NS_DEBUG
nsFrameList tmp(aFrameList);
tmp.VerifyParent(this);
#endif
// XXX temporary code until frame containers stop using the old
// reflow command api's
nsIReflowCommand* reflowCmd = nsnull;
nsresult rv;
rv = NS_NewHTMLReflowCommand(&reflowCmd, this,
nsIReflowCommand::FrameAppended,
aFrameList);
if (NS_SUCCEEDED(rv)) {
if (nsnull != aListName) {
reflowCmd->SetChildListName(aListName);
}
aPresShell.AppendReflowCommand(reflowCmd);
NS_RELEASE(reflowCmd);
}
return rv;
#endif
}
NS_IMETHODIMP
nsFrame::InsertFrames(nsIPresContext& aPresContext,
nsIPresShell& aPresShell,
nsIAtom* aListName,
nsIFrame* aPrevFrame,
nsIFrame* aFrameList)
{
#if 0
return NS_ERROR_UNEXPECTED;
#else
#ifdef NS_DEBUG
nsFrameList tmp(aFrameList);
tmp.VerifyParent(this);
#endif
// XXX temporary code until frame containers stop using the old
// reflow command api's
// By default, the reflow command is aimed at the first-in-flow. We
// map that to the flow block that contains aPrevFrame for
// compatability.
nsIFrame* target = this;
if (nsnull != aPrevFrame) {
aPrevFrame->GetParent(&target);
}
nsIReflowCommand* reflowCmd = nsnull;
nsresult rv;
rv = NS_NewHTMLReflowCommand(&reflowCmd, target, aFrameList, aPrevFrame);
if (NS_SUCCEEDED(rv)) {
if (nsnull != aListName) {
reflowCmd->SetChildListName(aListName);
}
aPresShell.AppendReflowCommand(reflowCmd);
NS_RELEASE(reflowCmd);
}
return rv;
#endif
}
NS_IMETHODIMP
nsFrame::RemoveFrame(nsIPresContext& aPresContext,
nsIPresShell& aPresShell,
nsIAtom* aListName,
nsIFrame* aOldFrame)
{
#if 0
return NS_ERROR_UNEXPECTED;
#else
#ifdef NS_DEBUG
nsIFrame* parent;
aOldFrame->GetParent(&parent);
NS_ASSERTION(parent == this, "bad child parent");
#endif
// XXX temporary code until frame containers stop using the old
// reflow command api's
// By default, the reflow command is aimed at the first-in-flow. We
// map that to the flow block that contains aPrevFrame for
// compatability.
nsIFrame* target = this;
if (nsnull != aOldFrame) {
aOldFrame->GetParent(&target);
}
nsIReflowCommand* reflowCmd = nsnull;
nsresult rv;
rv = NS_NewHTMLReflowCommand(&reflowCmd, target,
nsIReflowCommand::FrameRemoved,
aOldFrame);
if (NS_SUCCEEDED(rv)) {
if (nsnull != aListName) {
reflowCmd->SetChildListName(aListName);
}
aPresShell.AppendReflowCommand(reflowCmd);
NS_RELEASE(reflowCmd);
}
return rv;
#endif
}
NS_IMETHODIMP
nsFrame::DeleteFrame(nsIPresContext& aPresContext)
{
if (mState & NS_FRAME_EXTERNAL_REFERENCE || mSelected) {
nsCOMPtr<nsIPresShell> shell;
nsresult rv = aPresContext.GetShell(getter_AddRefs(shell));
if (NS_SUCCEEDED(rv) && shell) {
shell->ClearFrameRefs(this);
}
}
//XXX Why is this done in nsFrame instead of some frame class
// that actually loads images?
aPresContext.StopLoadImage(this);
//Set to prevent event dispatch during destruct
if (nsnull != mView) {
mView->SetClientData(nsnull);
}
delete this;
return NS_OK;
}
NS_IMETHODIMP
nsFrame::GetContent(nsIContent** aContent) const
{
NS_PRECONDITION(nsnull != aContent, "null OUT parameter pointer");
NS_IF_ADDREF(mContent);
*aContent = mContent;
return NS_OK;
}
NS_IMETHODIMP
nsFrame::GetOffsets(PRInt32 &aStart, PRInt32 &aEnd) const
{
aStart = 0;
aEnd = 0;
return NS_OK;
}
NS_IMETHODIMP
nsFrame::GetStyleContext(nsIStyleContext** aStyleContext) const
{
NS_PRECONDITION(nsnull != aStyleContext, "null OUT parameter pointer");
NS_ASSERTION(nsnull != mStyleContext, "frame should always have style context");
NS_IF_ADDREF(mStyleContext);
*aStyleContext = mStyleContext;
return NS_OK;
}
NS_IMETHODIMP nsFrame::SetStyleContext(nsIPresContext* aPresContext,nsIStyleContext* aContext)
{
NS_PRECONDITION(0 == (mState & NS_FRAME_IN_REFLOW), "Shouldn't set style context during reflow");
NS_PRECONDITION(nsnull != aContext, "null ptr");
if (aContext != mStyleContext) {
NS_IF_RELEASE(mStyleContext);
if (nsnull != aContext) {
mStyleContext = aContext;
NS_ADDREF(aContext);
DidSetStyleContext(aPresContext);
}
}
return NS_OK;
}
// Subclass hook for style post processing
NS_IMETHODIMP nsFrame::DidSetStyleContext(nsIPresContext* aPresContext)
{
return NS_OK;
}
NS_IMETHODIMP nsFrame::GetStyleData(nsStyleStructID aSID, const nsStyleStruct*& aStyleStruct) const
{
NS_ASSERTION(mStyleContext!=nsnull,"null style context");
if (mStyleContext) {
aStyleStruct = mStyleContext->GetStyleData(aSID);
} else {
aStyleStruct = nsnull;
}
return NS_OK;
}
NS_IMETHODIMP nsFrame::ReResolveStyleContext(nsIPresContext* aPresContext,
nsIStyleContext* aParentContext)
{
// XXX TURN THIS ON NS_PRECONDITION(0 == (mState & NS_FRAME_IN_REFLOW), "Shouldn't set style context during reflow");
NS_ASSERTION(nsnull != mStyleContext, "null style context");
if (nsnull != mStyleContext) {
nsIAtom* pseudoTag = nsnull;
mStyleContext->GetPseudoType(pseudoTag);
nsIStyleContext* newContext;
if (nsnull != pseudoTag) {
aPresContext->ResolvePseudoStyleContextFor(mContent, pseudoTag,
aParentContext,
PR_FALSE, &newContext);
}
else {
aPresContext->ResolveStyleContextFor(mContent, aParentContext,
PR_FALSE, &newContext);
}
NS_ASSERTION(nsnull != newContext, "failed to get new style context");
if (nsnull != newContext) {
if (newContext != mStyleContext) {
NS_RELEASE(mStyleContext);
mStyleContext = newContext;
DidSetStyleContext(aPresContext);
}
else {
NS_RELEASE(newContext);
mStyleContext->RemapStyle(aPresContext);
}
}
}
return NS_OK;
}
// Geometric parent member functions
NS_IMETHODIMP nsFrame::GetParent(nsIFrame** aParent) const
{
NS_PRECONDITION(nsnull != aParent, "null OUT parameter pointer");
*aParent = mParent;
return NS_OK;
}
NS_IMETHODIMP nsFrame::SetParent(const nsIFrame* aParent)
{
mParent = (nsIFrame*)aParent;
return NS_OK;
}
// Bounding rect member functions
NS_IMETHODIMP nsFrame::GetRect(nsRect& aRect) const
{
aRect = mRect;
return NS_OK;
}
NS_IMETHODIMP nsFrame::GetOrigin(nsPoint& aPoint) const
{
aPoint.x = mRect.x;
aPoint.y = mRect.y;
return NS_OK;
}
NS_IMETHODIMP nsFrame::GetSize(nsSize& aSize) const
{
aSize.width = mRect.width;
aSize.height = mRect.height;
return NS_OK;
}
NS_IMETHODIMP nsFrame::SetRect(const nsRect& aRect)
{
MoveTo(aRect.x, aRect.y);
SizeTo(aRect.width, aRect.height);
return NS_OK;
}
NS_IMETHODIMP nsFrame::MoveTo(nscoord aX, nscoord aY)
{
mRect.x = aX;
mRect.y = aY;
if (nsnull != mView) {
// If we should keep the view position and size in sync with the frame
// then position the view. Don't do this if we're in the middle of reflow.
// Instead wait until the DidReflow() notification
if (NS_FRAME_SYNC_FRAME_AND_VIEW == (mState & (NS_FRAME_IN_REFLOW |
NS_FRAME_SYNC_FRAME_AND_VIEW))) {
// Position view relative to its parent, not relative to our
// parent frame (our parent frame may not have a view).
nsIView* parentWithView;
nsPoint origin;
GetOffsetFromView(origin, &parentWithView);
nsIViewManager *vm;
mView->GetViewManager(vm);
vm->MoveViewTo(mView, origin.x, origin.y);
NS_RELEASE(vm);
}
}
return NS_OK;
}
NS_IMETHODIMP nsFrame::SizeTo(nscoord aWidth, nscoord aHeight)
{
mRect.width = aWidth;
mRect.height = aHeight;
// Let the view know
if (nsnull != mView) {
// If we should keep the view position and size in sync with the frame
// then resize the view. Don't do this if we're in the middle of reflow.
// Instead wait until the DidReflow() notification
if (NS_FRAME_SYNC_FRAME_AND_VIEW == (mState & (NS_FRAME_IN_REFLOW |
NS_FRAME_SYNC_FRAME_AND_VIEW))) {
// Resize the view to be the same size as the frame
nsIViewManager *vm;
mView->GetViewManager(vm);
vm->ResizeView(mView, aWidth, aHeight);
NS_RELEASE(vm);
}
}
return NS_OK;
}
// Child frame enumeration
NS_IMETHODIMP
nsFrame::GetAdditionalChildListName(PRInt32 aIndex, nsIAtom** aListName) const
{
NS_PRECONDITION(nsnull != aListName, "null OUT parameter pointer");
NS_PRECONDITION(aIndex >= 0, "invalid index number");
*aListName = nsnull;
return aIndex < 0 ? NS_ERROR_INVALID_ARG : NS_OK;
}
NS_IMETHODIMP nsFrame::FirstChild(nsIAtom* aListName, nsIFrame** aFirstChild) const
{
*aFirstChild = nsnull;
return nsnull == aListName ? NS_OK : NS_ERROR_INVALID_ARG;
}
PRBool
nsFrame::DisplaySelection(nsIPresContext& aPresContext, PRBool isOkToTurnOn)
{
PRBool result = PR_FALSE;
nsCOMPtr<nsIPresShell> shell;
nsresult rv = aPresContext.GetShell(getter_AddRefs(shell));
if (NS_SUCCEEDED(rv) && shell) {
nsCOMPtr<nsIDocument> doc;
rv = shell->GetDocument(getter_AddRefs(doc));
if (NS_SUCCEEDED(rv) && doc) {
result = doc->GetDisplaySelection();
if (isOkToTurnOn && !result) {
doc->SetDisplaySelection(PR_TRUE);
result = PR_TRUE;
}
}
}
return result;
}
NS_IMETHODIMP
nsFrame::Paint(nsIPresContext& aPresContext,
nsIRenderingContext& aRenderingContext,
const nsRect& aDirtyRect,
nsFramePaintLayer aWhichLayer)
{
if (eFramePaintLayer_Overlay == aWhichLayer) {
if (DisplaySelection(aPresContext) == PR_FALSE)
return NS_OK;
// Get Content
nsIContent* content;
nsresult rv = GetContent(&content);
if (NS_FAILED(rv) || (nsnull == content)) {
return rv;
}
PRInt32 n;
content->ChildCount(n);
if ((n == 0) && mSelected) {
nsRect rect;
GetRect(rect);
rect.width--;
rect.height--;
aRenderingContext.SetColor(NS_RGB(0,0,255));
aRenderingContext.DrawRect(rect);
aRenderingContext.DrawLine(rect.x, rect.y, rect.XMost(), rect.YMost());
aRenderingContext.DrawLine(rect.x, rect.YMost(), rect.XMost(), rect.y);
}
NS_RELEASE(content);
}
return NS_OK;
}
/**
*
*/
NS_IMETHODIMP
nsFrame::HandleEvent(nsIPresContext& aPresContext,
nsGUIEvent* aEvent,
nsEventStatus& aEventStatus)
{
if (nsEventStatus_eConsumeNoDefault == aEventStatus) {
return NS_OK;
}
if (DisplaySelection(aPresContext) == PR_FALSE) {
if (aEvent->message != NS_MOUSE_LEFT_BUTTON_DOWN) {
return NS_OK;
}
}
if(nsEventStatus_eConsumeNoDefault != aEventStatus) {
if (aEvent->message == NS_MOUSE_LEFT_BUTTON_DOWN) {
} else if (aEvent->message == NS_MOUSE_MOVE && mDoingSelection ||
aEvent->message == NS_MOUSE_LEFT_BUTTON_UP) {
// no-op
} else {
return NS_OK;
}
if (SELECTION_DEBUG) printf("Message: %d-------------------------------------------------------------\n",aEvent->message);
if (aEvent->message == NS_MOUSE_LEFT_BUTTON_UP) {
if (mDoingSelection) {
HandleRelease(aPresContext, aEvent, aEventStatus);
}
} else if (aEvent->message == NS_MOUSE_MOVE) {
mDidDrag = PR_TRUE;
HandleDrag(aPresContext, aEvent, aEventStatus);
//DEBUG MJUDGE DEBUG MESSAGE FOR DRAGGING FROM SELECTION
} else if (aEvent->message == NS_MOUSE_LEFT_BUTTON_DOWN) {
HandlePress(aPresContext, aEvent, aEventStatus);
}
}
return NS_OK;
}
/**
* Handles the Mouse Press Event for the frame
*/
NS_IMETHODIMP
nsFrame::HandlePress(nsIPresContext& aPresContext,
nsGUIEvent* aEvent,
nsEventStatus& aEventStatus)
{
if (!DisplaySelection(aPresContext, PR_TRUE)) {
aEventStatus = nsEventStatus_eIgnore;
return NS_OK;
}
mDoingSelection = PR_TRUE;
mDidDrag = PR_FALSE;
nsCOMPtr<nsIPresShell> shell;
nsresult rv = aPresContext.GetShell(getter_AddRefs(shell));
nsInputEvent *inputEvent = (nsInputEvent *)aEvent;
if (NS_SUCCEEDED(rv) && shell) {
nsCOMPtr<nsIRenderingContext> acx;
rv = shell->CreateRenderingContext(this, getter_AddRefs(acx));
if (NS_SUCCEEDED(rv)){
PRInt32 startPos = 0;
PRUint32 contentOffset = 0;
if (NS_SUCCEEDED(GetPosition(aPresContext, acx, aEvent, this, contentOffset, startPos))){
nsIDOMSelection *selection = nsnull;
if (NS_SUCCEEDED(shell->GetSelection(&selection))){
nsIFocusTracker *tracker;
if (NS_SUCCEEDED(shell->QueryInterface(kIFocusTracker,(void **)&tracker))){
nsIFrameSelection *frameselection = nsnull;
if (NS_SUCCEEDED(selection->QueryInterface(kIFrameSelection,
(void **)&frameselection))) {
frameselection->EnableFrameNotification(PR_FALSE);
frameselection->TakeFocus(tracker, this, startPos, contentOffset, inputEvent->isShift);
frameselection->EnableFrameNotification(PR_TRUE);//prevent cyclic call to reset selection.
NS_RELEASE(frameselection);
}
NS_RELEASE(tracker);
}
NS_RELEASE(selection);
}
//no release
}
}
}
return NS_OK;
}
NS_IMETHODIMP nsFrame::HandleDrag(nsIPresContext& aPresContext,
nsGUIEvent* aEvent,
nsEventStatus& aEventStatus)
{
if (!DisplaySelection(aPresContext, PR_TRUE)) {
aEventStatus = nsEventStatus_eIgnore;
return NS_OK;
}
mDoingSelection = PR_TRUE;
mDidDrag = PR_FALSE;
nsCOMPtr<nsIPresShell> shell;
nsresult rv = aPresContext.GetShell(getter_AddRefs(shell));
if (NS_SUCCEEDED(rv) && shell) {
nsCOMPtr<nsIRenderingContext> acx;
rv = shell->CreateRenderingContext(this, getter_AddRefs(acx));
if (NS_SUCCEEDED(rv)) {
PRInt32 startPos = 0;
PRUint32 contentOffset = 0;
if (NS_SUCCEEDED(GetPosition(aPresContext, acx, aEvent, this, contentOffset, startPos))){
nsIDOMSelection *selection = nsnull;
if (NS_SUCCEEDED(shell->GetSelection(&selection))){
nsIFocusTracker *tracker;
if (NS_SUCCEEDED(shell->QueryInterface(kIFocusTracker,(void **)&tracker))) {
nsIFrameSelection* frameselection;
if (NS_SUCCEEDED(selection->QueryInterface(kIFrameSelection, (void **)&frameselection))) {
frameselection->EnableFrameNotification(PR_FALSE);
frameselection->TakeFocus(tracker, this, startPos, contentOffset, PR_TRUE); //TRUE IS THE DIFFERENCE
frameselection->EnableFrameNotification(PR_TRUE);//prevent cyclic call to reset selection.
NS_RELEASE(frameselection);
}
NS_RELEASE(tracker);
}
NS_RELEASE(selection);
}
//no release
}
}
}
return NS_OK;
}
NS_IMETHODIMP nsFrame::HandleRelease(nsIPresContext& aPresContext,
nsGUIEvent* aEvent,
nsEventStatus& aEventStatus)
{
mDoingSelection = PR_FALSE;
aEventStatus = nsEventStatus_eIgnore;
NS_IF_RELEASE(gDoc);
return NS_OK;
}
//--------------------------------------------------------------------------
//-- GetPosition
//--------------------------------------------------------------------------
NS_IMETHODIMP nsFrame::GetPosition(nsIPresContext& aPresContext,
nsIRenderingContext * aRendContext,
nsGUIEvent * aEvent,
nsIFrame * aNewFrame,
PRUint32& aAcutalContentOffset,
PRInt32& aOffset)
{
//PRInt32 offset;
//PRInt32 width;
//CalcCursorPosition(aPresContext, aEvent, aNewFrame, offset, width);
//offset += aNewFrame->GetContentOffset();
//return offset;
aAcutalContentOffset = 0;
aOffset = -1;
return NS_OK;
}
/********************************************************
* Adjusts the Starting and Ending TextPoint for a Range
*********************************************************/
void nsFrame::AdjustPointsInNewContent(nsIPresContext& aPresContext,
nsIRenderingContext * aRendContext,
nsGUIEvent * aEvent,
nsIFrame * aNewFrame) {
#if 0
PRUint32 actualOffset = 0;
// Get new Cursor Poition in the new content
PRInt32 newPos;
//DEBUG MJUDGE
GetPosition(aPresContext, aRendContext, aEvent, aNewFrame, actualOffset, newPos);
if (mStartSelectionPoint->IsAnchor()) {
if (newPos == mStartSelectionPoint->GetOffset()) {
mEndSelectionPoint->SetOffset(newPos);
mEndSelectionPoint->SetAnchor(PR_TRUE);
mSelectionRange->SetEndPoint(mEndSelectionPoint);
} else if (newPos < mStartSelectionPoint->GetOffset()) {
mEndSelectionPoint->SetOffset(mStartSelectionPoint->GetOffset());
mEndSelectionPoint->SetAnchor(PR_TRUE);
mStartSelectionPoint->SetOffset(newPos);
mStartSelectionPoint->SetAnchor(PR_FALSE);
mSelectionRange->SetRange(mStartSelectionPoint, mEndSelectionPoint);
} else {
mEndSelectionPoint->SetOffset(newPos);
mSelectionRange->SetEndPoint(mEndSelectionPoint);
}
} else if (mEndSelectionPoint->IsAnchor()) {
int endPos = mEndSelectionPoint->GetOffset();
if (newPos == mEndSelectionPoint->GetOffset()) {
mStartSelectionPoint->SetOffset(newPos);
mStartSelectionPoint->SetAnchor(PR_TRUE);
mSelectionRange->SetStartPoint(mStartSelectionPoint);
} else if (newPos > mEndSelectionPoint->GetOffset()) {
mEndSelectionPoint->SetOffset(newPos);
mEndSelectionPoint->SetAnchor(PR_FALSE);
mStartSelectionPoint->SetOffset(endPos);
mStartSelectionPoint->SetAnchor(PR_TRUE);
mSelectionRange->SetRange(mStartSelectionPoint, mEndSelectionPoint);
} else {
mStartSelectionPoint->SetOffset(newPos);
mSelectionRange->SetStartPoint(mStartSelectionPoint);
}
} else {
// [TODO] Should get here
// throw exception
if (SELECTION_DEBUG) printf("--\n--\n--\n--\n--\n--\n--\n Should be here. #102\n");
//return;
}
#endif //0
}
/********************************************************
* Adjusts the Starting and Ending TextPoint for a Range
*********************************************************/
void nsFrame::AdjustPointsInSameContent(nsIPresContext& aPresContext,
nsIRenderingContext * aRendContext,
nsGUIEvent * aEvent) {
#if 0
PRUint32 actualOffset = 0;
// Get new Cursor Poition in the same content
PRInt32 newPos;
GetPosition(aPresContext, aRendContext, aEvent, mCurrentFrame, actualOffset, newPos);
//newPos += actualOffset;
if (SELECTION_DEBUG) printf("AdjustTextPointsInSameContent newPos: %d\n", newPos);
if (mStartSelectionPoint->IsAnchor()) {
if (newPos == mStartSelectionPoint->GetOffset()) {
mEndSelectionPoint->SetOffset(newPos);
mEndSelectionPoint->SetAnchor(PR_TRUE);
mSelectionRange->SetEndPoint(mEndSelectionPoint);
} else if (newPos < mStartSelectionPoint->GetOffset()) {
mStartSelectionPoint->SetOffset(newPos);
mStartSelectionPoint->SetAnchor(PR_FALSE);
mEndSelectionPoint->SetAnchor(PR_TRUE);
mSelectionRange->SetRange(mStartSelectionPoint, mEndSelectionPoint);
} else {
mEndSelectionPoint->SetAnchor(PR_FALSE);
mEndSelectionPoint->SetOffset(newPos);
mSelectionRange->SetEndPoint(mEndSelectionPoint);
}
} else if (mEndSelectionPoint->IsAnchor()) {
if (newPos == mEndSelectionPoint->GetOffset()) {
mStartSelectionPoint->SetOffset(newPos);
mStartSelectionPoint->SetAnchor(PR_TRUE);
mSelectionRange->SetStartPoint(mStartSelectionPoint);
} else if (newPos > mEndSelectionPoint->GetOffset()) {
mEndSelectionPoint->SetOffset(newPos);
mEndSelectionPoint->SetAnchor(PR_FALSE);
mStartSelectionPoint->SetAnchor(PR_TRUE);
mSelectionRange->SetRange(mStartSelectionPoint, mEndSelectionPoint);
} else {
mStartSelectionPoint->SetAnchor(PR_FALSE);
mStartSelectionPoint->SetOffset(newPos);
mSelectionRange->SetStartPoint(mStartSelectionPoint);
}
} else {
// [TODO] Should get here
// throw exception
if (SELECTION_DEBUG) printf("--\n--\n--\n--\n--\n--\n--\n Should be here. #101\n");
//return;
}
if (SELECTION_DEBUG) printf("Start %s End %s\n", mStartSelectionPoint->ToString(), mEndSelectionPoint->ToString());
//}
#endif //0
}
NS_IMETHODIMP
nsFrame::GetCursor(nsIPresContext& aPresContext,
nsPoint& aPoint,
PRInt32& aCursor)
{
const nsStyleColor* styleColor;
GetStyleData(eStyleStruct_Color, (const nsStyleStruct*&)styleColor);
aCursor = styleColor->mCursor;
if ((NS_STYLE_CURSOR_AUTO == aCursor) && (nsnull != mParent)) {
mParent->GetCursor(aPresContext, aPoint, aCursor);
}
return NS_OK;
}
NS_IMETHODIMP
nsFrame::GetFrameForPoint(const nsPoint& aPoint, nsIFrame** aFrame)
{
*aFrame = this;
return NS_OK;
}
// Resize and incremental reflow
NS_IMETHODIMP
nsFrame::GetFrameState(nsFrameState* aResult)
{
NS_PRECONDITION(nsnull != aResult, "null OUT parameter pointer");
*aResult = mState;
return NS_OK;
}
NS_IMETHODIMP
nsFrame::SetFrameState(nsFrameState aNewState)
{
mState = aNewState;
return NS_OK;
}
// nsIHTMLReflow member functions
NS_IMETHODIMP
nsFrame::WillReflow(nsIPresContext& aPresContext)
{
NS_FRAME_TRACE_MSG(NS_FRAME_TRACE_CALLS,
("WillReflow: oldState=%x", mState));
mState |= NS_FRAME_IN_REFLOW;
return NS_OK;
}
NS_IMETHODIMP
nsFrame::DidReflow(nsIPresContext& aPresContext,
nsDidReflowStatus aStatus)
{
NS_FRAME_TRACE_MSG(NS_FRAME_TRACE_CALLS,
("nsFrame::DidReflow: aStatus=%d", aStatus));
if (NS_FRAME_REFLOW_FINISHED == aStatus) {
mState &= ~(NS_FRAME_IN_REFLOW | NS_FRAME_FIRST_REFLOW);
// Size and position the view if requested
if ((nsnull != mView) && (NS_FRAME_SYNC_FRAME_AND_VIEW & mState)) {
// Position and size view relative to its parent, not relative to our
// parent frame (our parent frame may not have a view).
nsIView* parentWithView;
nsPoint origin;
GetOffsetFromView(origin, &parentWithView);
nsIViewManager *vm;
mView->GetViewManager(vm);
vm->ResizeView(mView, mRect.width, mRect.height);
vm->MoveViewTo(mView, origin.x, origin.y);
NS_RELEASE(vm);
}
}
return NS_OK;
}
NS_IMETHODIMP
nsFrame::Reflow(nsIPresContext& aPresContext,
nsHTMLReflowMetrics& aDesiredSize,
const nsHTMLReflowState& aReflowState,
nsReflowStatus& aStatus)
{
aDesiredSize.width = 0;
aDesiredSize.height = 0;
aDesiredSize.ascent = 0;
aDesiredSize.descent = 0;
if (nsnull != aDesiredSize.maxElementSize) {
aDesiredSize.maxElementSize->width = 0;
aDesiredSize.maxElementSize->height = 0;
}
aStatus = NS_FRAME_COMPLETE;
return NS_OK;
}
NS_IMETHODIMP
nsFrame::FindTextRuns(nsLineLayout& aLineLayout)
{
aLineLayout.EndTextRun();
return NS_OK;
}
NS_IMETHODIMP
nsFrame::AdjustFrameSize(nscoord aExtraSpace, nscoord& aUsedSpace)
{
aUsedSpace = 0;
return NS_OK;
}
NS_IMETHODIMP
nsFrame::TrimTrailingWhiteSpace(nsIPresContext& aPresContext,
nsIRenderingContext& aRC,
nscoord& aDeltaWidth)
{
aDeltaWidth = 0;
return NS_OK;
}
NS_IMETHODIMP
nsFrame::MoveInSpaceManager(nsIPresContext& aPresContext,
nsISpaceManager* aSpaceManager,
nscoord aDeltaX, nscoord aDeltaY)
{
return NS_OK;
}
NS_IMETHODIMP
nsFrame::VerticalAlignFrames(nsIPresContext& aPresContext,
const nsHTMLReflowState& aState,
nscoord aLineHeight,
nscoord aDistanceFromTopEdge,
nsRect& aCombinedRect)
{
aCombinedRect = mRect;
return NS_OK;
}
NS_IMETHODIMP
nsFrame::ContentChanged(nsIPresContext* aPresContext,
nsIContent* aChild,
nsISupports* aSubContent)
{
nsCOMPtr<nsIPresShell> shell;
nsresult rv = aPresContext->GetShell(getter_AddRefs(shell));
if (NS_SUCCEEDED(rv) && shell) {
nsIReflowCommand* reflowCmd;
rv = NS_NewHTMLReflowCommand(&reflowCmd, this,
nsIReflowCommand::ContentChanged);
if (NS_SUCCEEDED(rv)) {
shell->AppendReflowCommand(reflowCmd);
NS_RELEASE(reflowCmd);
}
}
return rv;
}
NS_IMETHODIMP
nsFrame::AttributeChanged(nsIPresContext* aPresContext,
nsIContent* aChild,
nsIAtom* aAttribute,
PRInt32 aHint)
{
return NS_OK;
}
// Flow member functions
NS_IMETHODIMP nsFrame::IsSplittable(nsSplittableType& aIsSplittable) const
{
aIsSplittable = NS_FRAME_NOT_SPLITTABLE;
return NS_OK;
}
NS_IMETHODIMP nsFrame::GetPrevInFlow(nsIFrame** aPrevInFlow) const
{
*aPrevInFlow = nsnull;
return NS_OK;
}
NS_IMETHODIMP nsFrame::SetPrevInFlow(nsIFrame*)
{
NS_ERROR("not splittable");
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP nsFrame::GetNextInFlow(nsIFrame** aNextInFlow) const
{
*aNextInFlow = nsnull;
return NS_OK;
}
NS_IMETHODIMP nsFrame::SetNextInFlow(nsIFrame*)
{
NS_ERROR("not splittable");
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP nsFrame::AppendToFlow(nsIFrame* aAfterFrame)
{
NS_ERROR("not splittable");
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP nsFrame::PrependToFlow(nsIFrame* aBeforeFrame)
{
NS_ERROR("not splittable");
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP nsFrame::RemoveFromFlow()
{
NS_ERROR("not splittable");
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP nsFrame::BreakFromPrevFlow()
{
NS_ERROR("not splittable");
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP nsFrame::BreakFromNextFlow()
{
NS_ERROR("not splittable");
return NS_ERROR_NOT_IMPLEMENTED;
}
// Associated view object
NS_IMETHODIMP nsFrame::GetView(nsIView** aView) const
{
NS_PRECONDITION(nsnull != aView, "null OUT parameter pointer");
*aView = mView;
return NS_OK;
}
NS_IMETHODIMP nsFrame::SetView(nsIView* aView)
{
nsresult rv;
if (nsnull != aView) {
mView = aView;
aView->SetClientData(this);
rv = NS_OK;
}
else
rv = NS_OK;
return rv;
}
// Find the first geometric parent that has a view
NS_IMETHODIMP nsFrame::GetParentWithView(nsIFrame** aParent) const
{
NS_PRECONDITION(nsnull != aParent, "null OUT parameter pointer");
nsIFrame* parent;
for (parent = mParent; nsnull != parent; parent->GetParent(&parent)) {
nsIView* parView;
parent->GetView(&parView);
if (nsnull != parView) {
break;
}
}
*aParent = parent;
return NS_OK;
}
// Returns the offset from this frame to the closest geometric parent that
// has a view. Also returns the containing view or null in case of error
NS_IMETHODIMP nsFrame::GetOffsetFromView(nsPoint& aOffset, nsIView** aView) const
{
NS_PRECONDITION(nsnull != aView, "null OUT parameter pointer");
nsIFrame* frame = (nsIFrame*)this;
*aView = nsnull;
aOffset.MoveTo(0, 0);
do {
nsPoint origin;
frame->GetOrigin(origin);
aOffset += origin;
frame->GetParent(&frame);
if (nsnull != frame) {
frame->GetView(aView);
}
} while ((nsnull != frame) && (nsnull == *aView));
return NS_OK;
}
NS_IMETHODIMP nsFrame::GetWindow(nsIWidget** aWindow) const
{
NS_PRECONDITION(nsnull != aWindow, "null OUT parameter pointer");
nsIFrame* frame;
nsIWidget* window = nsnull;
for (frame = (nsIFrame*)this; nsnull != frame; frame->GetParentWithView(&frame)) {
nsIView* view;
frame->GetView(&view);
if (nsnull != view) {
view->GetWidget(window);
if (nsnull != window) {
break;
}
}
}
NS_POSTCONDITION(nsnull != window, "no window in frame tree");
*aWindow = window;
return NS_OK;
}
NS_IMETHODIMP
nsFrame::GetFrameType(nsIAtom** aType) const
{
NS_PRECONDITION(nsnull != aType, "null OUT parameter pointer");
*aType = nsnull;
return NS_OK;
}
void
nsFrame::Invalidate(const nsRect& aDamageRect,
PRBool aImmediate) const
{
nsIViewManager* viewManager = nsnull;
PRUint32 flags = aImmediate ? NS_VMREFRESH_IMMEDIATE : NS_VMREFRESH_NO_SYNC;
if (nsnull != mView) {
mView->GetViewManager(viewManager);
viewManager->UpdateView(mView, aDamageRect, flags);
} else {
nsRect rect(aDamageRect);
nsPoint offset;
nsIView* view;
GetOffsetFromView(offset, &view);
NS_ASSERTION(nsnull != view, "no view");
rect += offset;
view->GetViewManager(viewManager);
viewManager->UpdateView(view, rect, flags);
}
NS_IF_RELEASE(viewManager);
}
// Style sizing methods
NS_IMETHODIMP nsFrame::IsPercentageBase(PRBool& aBase) const
{
const nsStylePosition* position;
GetStyleData(eStyleStruct_Position, (const nsStyleStruct*&)position);
if (position->mPosition != NS_STYLE_POSITION_NORMAL) {
aBase = PR_TRUE;
}
else {
const nsStyleDisplay* display;
GetStyleData(eStyleStruct_Display, (const nsStyleStruct*&)display);
if ((display->mDisplay == NS_STYLE_DISPLAY_BLOCK) ||
(display->mDisplay == NS_STYLE_DISPLAY_LIST_ITEM) ||
(display->mDisplay == NS_STYLE_DISPLAY_TABLE_CELL)) {
aBase = PR_TRUE;
}
else {
aBase = PR_FALSE;
}
}
return NS_OK;
}
// Sibling pointer used to link together frames
NS_IMETHODIMP nsFrame::GetNextSibling(nsIFrame** aNextSibling) const
{
NS_PRECONDITION(nsnull != aNextSibling, "null OUT parameter pointer");
*aNextSibling = mNextSibling;
return NS_OK;
}
NS_IMETHODIMP nsFrame::SetNextSibling(nsIFrame* aNextSibling)
{
NS_ASSERTION(aNextSibling != this, "attempt to create circular frame list");
mNextSibling = aNextSibling;
return NS_OK;
}
// Transparency query
NS_IMETHODIMP nsFrame::IsTransparent(PRBool& aTransparent) const
{
//XXX this needs to be overridden in just about every leaf class? MMP
aTransparent = PR_TRUE;
return NS_OK;
}
NS_IMETHODIMP nsFrame::Scrolled(nsIView *aView)
{
return NS_OK;
}
PRInt32 nsFrame::ContentIndexInContainer(const nsIFrame* aFrame)
{
nsIContent* content;
PRInt32 result = -1;
aFrame->GetContent(&content);
if (nsnull != content) {
nsIContent* parentContent;
content->GetParent(parentContent);
if (nsnull != parentContent) {
parentContent->IndexOf(content, result);
NS_RELEASE(parentContent);
}
NS_RELEASE(content);
}
return result;
}
// Debugging
NS_IMETHODIMP
nsFrame::List(FILE* out, PRInt32 aIndent) const
{
IndentBy(out, aIndent);
ListTag(out);
if (nsnull != mView) {
fprintf(out, " [view=%p]", mView);
}
fprintf(out, " {%d,%d,%d,%d}", mRect.x, mRect.y, mRect.width, mRect.height);
if (0 != mState) {
fprintf(out, " [state=%08x]", mState);
}
fputs("<>\n", out);
return NS_OK;
}
NS_IMETHODIMP
nsFrame::GetFrameName(nsString& aResult) const
{
return MakeFrameName("Frame", aResult);
}
nsresult
nsFrame::MakeFrameName(const char* aType, nsString& aResult) const
{
aResult = aType;
if (nsnull != mContent) {
nsIAtom* tag;
mContent->GetTag(tag);
if ((tag != nsnull) && (tag != nsLayoutAtoms::textTagName)) {
aResult.Append("(");
nsAutoString buf;
tag->ToString(buf);
aResult.Append(buf);
NS_RELEASE(tag);
aResult.Append(")");
}
}
char buf[40];
PR_snprintf(buf, sizeof(buf), "(%d)", ContentIndexInContainer(this));
aResult.Append(buf);
return NS_OK;
}
void
nsFrame::XMLQuote(nsString& aString)
{
PRInt32 i, len = aString.Length();
for (i = 0; i < len; i++) {
PRUnichar ch = aString[i];
if (ch == '<') {
nsAutoString tmp("&lt;");
aString.Cut(i, 1);
aString.Insert(tmp, i);
len += 3;
i += 3;
}
else if (ch == '>') {
nsAutoString tmp("&gt;");
aString.Cut(i, 1);
aString.Insert(tmp, i);
len += 3;
i += 3;
}
else if (ch == '\"') {
nsAutoString tmp("&quot;");
aString.Cut(i, 1);
aString.Insert(tmp, i);
len += 5;
i += 5;
}
}
}
NS_IMETHODIMP
nsFrame::DumpRegressionData(FILE* out, PRInt32 aIndent)
{
IndentBy(out, aIndent);
fprintf(out, "<frame va=\"%ld\" type=\"", PRUptrdiff(this));
nsAutoString name;
GetFrameName(name);
XMLQuote(name);
fputs(name, out);
fprintf(out, "\" state=\"%d\" parent=\"%ld\">\n",
mState, PRUptrdiff(mParent));
aIndent++;
DumpBaseRegressionData(out, aIndent);
aIndent--;
IndentBy(out, aIndent);
fprintf(out, "</frame>\n");
return NS_OK;
}
void
nsFrame::DumpBaseRegressionData(FILE* out, PRInt32 aIndent)
{
if (nsnull != mNextSibling) {
IndentBy(out, aIndent);
fprintf(out, "<next-sibling va=\"%ld\"/>\n", PRUptrdiff(mNextSibling));
}
if (nsnull != mView) {
IndentBy(out, aIndent);
fprintf(out, "<view va=\"%ld\">\n", PRUptrdiff(mView));
aIndent++;
// XXX add in code to dump out view state too...
aIndent--;
IndentBy(out, aIndent);
fprintf(out, "</view>\n");
}
IndentBy(out, aIndent);
fprintf(out, "<bbox x=\"%d\" y=\"%d\" w=\"%d\" h=\"%d\"/>\n",
mRect.x, mRect.y, mRect.width, mRect.height);
// Now dump all of the children on all of the child lists
nsIFrame* kid;
nsIAtom* list = nsnull;
PRInt32 listIndex = 0;
do {
nsresult rv = FirstChild(list, &kid);
if (NS_SUCCEEDED(rv) && (nsnull != kid)) {
IndentBy(out, aIndent);
if (nsnull != list) {
nsAutoString listName;
list->ToString(listName);
fprintf(out, "<child-list name=\"");
XMLQuote(listName);
fputs(listName, out);
fprintf(out, "\">\n");
}
else {
fprintf(out, "<child-list>\n");
}
aIndent++;
while (nsnull != kid) {
kid->DumpRegressionData(out, aIndent);
kid->GetNextSibling(&kid);
}
aIndent--;
IndentBy(out, aIndent);
fprintf(out, "</child-list>\n");
}
NS_IF_RELEASE(list);
GetAdditionalChildListName(listIndex++, &list);
} while (nsnull != list);
}
NS_IMETHODIMP
nsFrame::VerifyTree() const
{
NS_ASSERTION(0 == (mState & NS_FRAME_IN_REFLOW), "frame is in reflow");
return NS_OK;
}
/*this method may.. invalidate if the state was changed or if aForceRedraw is PR_TRUE
it will not update immediately.*/
NS_IMETHODIMP
nsFrame::SetSelected(nsSelectionStruct *aSelStruct)
{
if (!aSelStruct)
return NS_ERROR_NULL_POINTER;
if (mSelected != (PRBool)(aSelStruct->mType & nsSelectionStruct::SELON ) || aSelStruct->mForceRedraw)
{
mSelected = aSelStruct->mType & nsSelectionStruct::SELON ;
/* nsRect rect;
GetRect(rect);
nsIFrame *frame = this;
nsIFrame *firstframe = nsnull;
while (NS_SUCCEEDED(frame->GetPrevInFlow(&frame)) && frame){
firstframe = frame;
}
if (firstframe){
nsRect rect2;
firstframe->GetRect(rect2);
rect.y-= rect.y-rect2.y;
}
*/
ForceDrawFrame(this);//invalidate does not work in all cases.
//Invalidate(rect,PR_FALSE); //false is for not immediate
}
return NS_OK;
}
NS_IMETHODIMP
nsFrame::SetSelectedContentOffsets(nsSelectionStruct *aSS,
nsIFocusTracker *aTracker,
nsIFrame **aActualSelected)
{
if (!aActualSelected || !aSS)
return NS_ERROR_NULL_POINTER;
nsIFrame *child = nsnull;
nsresult result = FirstChild(nsnull, &child);
if (NS_FAILED(result)){
*aActualSelected = this;
if (aSS->mAnchorOffset > 0)
aTracker->SetFocus(nsnull,this);
if (aSS->mFocusOffset > 0)
aTracker->SetFocus(this,nsnull);
return SetSelected(aSS);
}
*aActualSelected = nsnull;
//wont actually bother with selection here on "this" frame
while (child && NS_SUCCEEDED(result)){
result |= child->SetSelectedContentOffsets(aSS, aTracker, aActualSelected);
if (NS_SUCCEEDED(result) && aActualSelected)
return result; //done.
result |= child->GetNextSibling(&child);
}
return result;
}
NS_IMETHODIMP
nsFrame::GetSelected(PRBool *aSelected, PRInt32 *aBeginOffset, PRInt32 *aEndOffset, PRInt32 *aBeginContentOffset)
{
if (!aSelected )
return NS_ERROR_NULL_POINTER;
*aSelected = mSelected;
return NS_OK;
}
NS_IMETHODIMP
nsFrame::GetPointFromOffset(nsIPresContext* inPresContext, nsIRenderingContext* inRendContext, PRInt32 inOffset, nsPoint* outPoint)
{
NS_PRECONDITION(outPoint != nsnull, "Null parameter");
nsPoint bottomLeft(0, 0);
*outPoint = bottomLeft;
return NS_OK;
}
NS_IMETHODIMP
nsFrame::GetChildFrameContainingOffset(PRInt32 inContentOffset, PRInt32* outFrameContentOffset, nsIFrame **outChildFrame)
{
NS_PRECONDITION(outChildFrame && outFrameContentOffset, "Null parameter");
*outFrameContentOffset = 0;
*outChildFrame = this;
return NS_OK;
}
NS_IMETHODIMP
nsFrame::PeekOffset(nsSelectionAmount aAmount, nsDirection aDirection, PRInt32 aStartOffset,
nsIFrame **aResultFrame, PRInt32 *aFrameOffset, PRInt32 *aContentOffset,
PRBool aEatingWS)
{
//this will use the nsFrameTraversal as the default peek method.
//this should change to use geometry and also look to ALL the child lists
nsCOMPtr<nsIBidirectionalEnumerator> frameTraversal;
nsresult result = NS_NewFrameTraversal(getter_AddRefs(frameTraversal),LEAF,this);
if (NS_FAILED(result))
return result;
nsISupports *isupports = nsnull;
if (aDirection == eDirNext)
result = frameTraversal->Next();
else
result = frameTraversal->Prev();
if (NS_FAILED(result))
return result;
result = frameTraversal->CurrentItem(&isupports);
if (NS_FAILED(result))
return result;
if (!isupports)
return NS_ERROR_NULL_POINTER;
//we must CAST here to an nsIFrame. nsIFrame doesnt really follow the rules
//for speed reasons
nsIFrame *newFrame = (nsIFrame *)isupports;
return newFrame->PeekOffset(aAmount, aDirection, aStartOffset, aResultFrame,
aFrameOffset, aContentOffset, aEatingWS);
}
//-----------------------------------------------------------------------------------
/********************************************************
* Refreshes each content's frame
*********************************************************/
static void RefreshAllContentFrames(nsIFrame * aFrame, nsIContent * aContent)
{
nsIContent* frameContent;
aFrame->GetContent(&frameContent);
if (frameContent == aContent) {
ForceDrawFrame((nsFrame *)aFrame);
}
NS_IF_RELEASE(frameContent);
aFrame->FirstChild(nsnull, &aFrame);
while (aFrame) {
RefreshAllContentFrames(aFrame, aContent);
aFrame->GetNextSibling(&aFrame);
}
}
/********************************************************
* Refreshes each content's frame
*********************************************************/
#if 0
static void RefreshContentFrames(nsIPresContext& aPresContext,
nsIContent * aStartContent,
nsIContent * aEndContent)
{
//-------------------------------------
// Undraw all the current selected frames
// XXX Kludge for now
nsIPresShell *shell = aPresContext.GetShell();
nsIFrame *rootFrame;
shell->GetRootFrame(rootFrame);
PRBool foundStart = PR_FALSE;
for (PRInt32 i=0;i<fMax;i++) {
nsIContent * node = (nsIContent *)fContentArray[i];
if (node == aStartContent) {
foundStart = PR_TRUE;
//ForceDrawFrame((nsFrame *)shell->FindFrameWithContent(node));
RefreshAllContentFrames(rootFrame, node);
if (aStartContent == aEndContent) {
break;
}
} else if (foundStart) {
//ForceDrawFrame((nsFrame *)shell->FindFrameWithContent(node));
RefreshAllContentFrames(rootFrame, node);
} else if (aEndContent == node) {
//ForceDrawFrame((nsFrame *)shell->FindFrameWithContent(node));
RefreshAllContentFrames(rootFrame, node);
break;
}
}
//NS_RELEASE(rootFrame);
NS_RELEASE(shell);
//-------------------------------------
}
#endif
/**
*
*/
void ForceDrawFrame(nsFrame * aFrame)//, PRBool)
{
if (aFrame == nsnull) {
return;
}
nsRect rect;
nsIView * view;
nsPoint pnt;
aFrame->GetOffsetFromView(pnt, &view);
aFrame->GetRect(rect);
rect.x = pnt.x;
rect.y = pnt.y;
if (view != nsnull) {
nsIViewManager * viewMgr;
view->GetViewManager(viewMgr);
if (viewMgr != nsnull) {
viewMgr->UpdateView(view, rect, 0);
NS_RELEASE(viewMgr);
}
//viewMgr->UpdateView(view, rect, NS_VMREFRESH_DOUBLE_BUFFER | NS_VMREFRESH_IMMEDIATE);
}
}
#ifdef NS_DEBUG
static void
GetTagName(nsFrame* aFrame, nsIContent* aContent, PRIntn aResultSize,
char* aResult)
{
char namebuf[40];
namebuf[0] = 0;
if (nsnull != aContent) {
nsIAtom* tag;
aContent->GetTag(tag);
if (nsnull != tag) {
nsAutoString tmp;
tag->ToString(tmp);
tmp.ToCString(namebuf, sizeof(namebuf));
NS_RELEASE(tag);
}
}
PR_snprintf(aResult, aResultSize, "%s@%p", namebuf, aFrame);
}
void
nsFrame::Trace(const char* aMethod, PRBool aEnter)
{
if (NS_FRAME_LOG_TEST(gLogModule, NS_FRAME_TRACE_CALLS)) {
char tagbuf[40];
GetTagName(this, mContent, sizeof(tagbuf), tagbuf);
PR_LogPrint("%s: %s %s", tagbuf, aEnter ? "enter" : "exit", aMethod);
}
}
void
nsFrame::Trace(const char* aMethod, PRBool aEnter, nsReflowStatus aStatus)
{
if (NS_FRAME_LOG_TEST(gLogModule, NS_FRAME_TRACE_CALLS)) {
char tagbuf[40];
GetTagName(this, mContent, sizeof(tagbuf), tagbuf);
PR_LogPrint("%s: %s %s, status=%scomplete%s",
tagbuf, aEnter ? "enter" : "exit", aMethod,
NS_FRAME_IS_NOT_COMPLETE(aStatus) ? "not" : "",
(NS_FRAME_REFLOW_NEXTINFLOW & aStatus) ? "+reflow" : "");
}
}
void
nsFrame::TraceMsg(const char* aFormatString, ...)
{
if (NS_FRAME_LOG_TEST(gLogModule, NS_FRAME_TRACE_CALLS)) {
// Format arguments into a buffer
char argbuf[200];
va_list ap;
va_start(ap, aFormatString);
PR_vsnprintf(argbuf, sizeof(argbuf), aFormatString, ap);
va_end(ap);
char tagbuf[40];
GetTagName(this, mContent, sizeof(tagbuf), tagbuf);
PR_LogPrint("%s: %s", tagbuf, argbuf);
}
}
#endif
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