Mozilla/mozilla/layout/base/src/nsFrame.cpp
peterl 25861753fc Changed GetStyleData to use an enum instead of an nsID
git-svn-id: svn://10.0.0.236/trunk@2090 18797224-902f-48f8-a5cc-f745e15eee43
1998-05-21 02:34:13 +00:00

1941 lines
59 KiB
C++

/* -*- 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 "nsFrame.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 "nsStyleConsts.h"
#include "nsReflowCommand.h"
#include "nsIPresShell.h"
#include "prlog.h"
#include "prprf.h"
#include <stdarg.h>
#define DO_SELECTION 0
#include "nsIDOMText.h"
#include "nsSelectionRange.h"
#include "nsDocument.h"
#include "nsIDeviceContext.h"
#include "nsIPresShell.h"
// Kludged Content stuff
nsIFrame * fFrameArray[1024];
nsIContent * fContentArray[1024];
PRInt32 fMax = -1;
// Tracker Data
#define kInsertInRemoveList 0
#define kInsertInAddList 1
nsIContent * fTrackerContentArrayRemoveList[1024];
PRInt32 fTrackerRemoveListMax = 0;
nsIContent * fTrackerContentArrayAddList[1024];
PRInt32 fTrackerAddListMax = 0;
// Some Misc #defines
#define gSelectionDebug 0
#define FORCE_SELECTION_UPDATE 1
PRBool gTrackerDebug = PR_FALSE;
PRBool gCalcDebug = PR_FALSE;
// [HACK] Foward Declarations
void BuildContentList(nsIContent*aContent);
PRBool IsInRange(nsIContent * aStartContent, nsIContent * aEndContent, nsIContent * aContent);
PRBool IsBefore(nsIContent * aNewContent, nsIContent * aCurrentContent);
nsIContent * GetPrevContent(nsIContent * aContent);
nsIContent * GetNextContent(nsIContent * aContent);
void RefreshContentFrames(nsIPresContext& aPresContext, nsIContent * aStartContent, nsIContent * aEndContent);
void ForceDrawFrame(nsFrame * aFrame);
void resetContentTrackers();
void RefreshFromContentTrackers(nsIPresContext& aPresContext);
void addRangeToSelectionTrackers(nsIContent * aStartContent, nsIContent * aEndContent, PRUint32 aType);
void PrintIndex(char * aStr, nsIContent * aContent);
// Initialize Global Selection Data
nsIFrame * nsFrame::mCurrentFrame = nsnull;
PRBool nsFrame::mDoingSelection = PR_FALSE;
PRBool nsFrame::mDidDrag = PR_FALSE;
PRInt32 nsFrame::mStartPos = 0;
// Selection data is valid only from the Mouse Press to the Mouse Release
nsSelectionRange * nsFrame::mSelectionRange = nsnull;
nsISelection * nsFrame::mSelection = nsnull;
nsSelectionPoint * nsFrame::mStartSelectionPoint = nsnull;
nsSelectionPoint * nsFrame::mEndSelectionPoint = nsnull;
//----------------------------------------------------------------------
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.
*/
PRLogModuleInfo* nsIFrame::gLogModule = PR_NewLogModule("frame");
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()
{
return gLogModule;
}
//----------------------------------------------------------------------
static NS_DEFINE_IID(kIFrameIID, NS_IFRAME_IID);
nsresult
nsFrame::NewFrame(nsIFrame** aInstancePtrResult,
nsIContent* aContent,
nsIFrame* aParent)
{
NS_PRECONDITION(nsnull != aInstancePtrResult, "null ptr");
if (nsnull == aInstancePtrResult) {
return NS_ERROR_NULL_POINTER;
}
nsIFrame* it = new nsFrame(aContent, aParent);
if (nsnull == it) {
return NS_ERROR_OUT_OF_MEMORY;
}
*aInstancePtrResult = it;
return NS_OK;
}
void* nsFrame::operator new(size_t size)
{
void* result = new char[size];
nsCRT::zero(result, size);
return result;
}
nsFrame::nsFrame(nsIContent* aContent, nsIFrame* aParent)
: mContent(aContent), mContentParent(aParent), mGeometricParent(aParent)
{
NS_ADDREF(mContent);
}
nsFrame::~nsFrame()
{
NS_RELEASE(mContent);
NS_IF_RELEASE(mStyleContext);
if (nsnull != mView) {
// Break association between view and frame
mView->SetFrame(nsnull);
NS_RELEASE(mView);
}
}
/////////////////////////////////////////////////////////////////////////////
// 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(kClassIID) || (aIID.Equals(kISupportsIID))) {
*aInstancePtr = (void*)this;
return NS_OK;
}
return NS_NOINTERFACE;
}
nsrefcnt nsFrame::AddRef(void)
{
NS_ERROR("not supported");
return 0;
}
nsrefcnt nsFrame::Release(void)
{
NS_ERROR("not supported");
return 0;
}
/////////////////////////////////////////////////////////////////////////////
// nsIFrame
NS_METHOD nsFrame::DeleteFrame()
{
nsIView* view = mView;
if (nsnull == view) {
nsIFrame* parent;
GetParentWithView(parent);
if (nsnull != parent) {
parent->GetView(view);
}
}
if (nsnull != view) {
nsIViewManager* vm = view->GetViewManager();
nsIPresContext* cx = vm->GetPresContext();
// XXX Is this a really good ordering for the releases? MMP
NS_RELEASE(vm);
NS_RELEASE(view);
cx->StopLoadImage(this);
NS_RELEASE(cx);
}
delete this;
return NS_OK;
}
NS_METHOD nsFrame::GetContent(nsIContent*& aContent) const
{
if (nsnull != mContent) {
NS_ADDREF(mContent);
}
aContent = mContent;
return NS_OK;
}
NS_METHOD nsFrame::GetContentIndex(PRInt32& aIndexInParent) const
{
nsIContent* parent = mContent->GetParent();
if (nsnull != parent) {
aIndexInParent = parent->IndexOf(mContent);
NS_RELEASE(parent);
}
else {
aIndexInParent = 0;
}
return NS_OK;
}
NS_METHOD nsFrame::GetStyleContext(nsIPresContext* aPresContext,
nsIStyleContext*& aStyleContext)
{
if ((nsnull == mStyleContext) && (nsnull != aPresContext)) {
mStyleContext = aPresContext->ResolveStyleContextFor(mContent, mGeometricParent); // XXX should be content parent???
if (nsnull != mStyleContext) {
DidSetStyleContext(aPresContext);
}
}
NS_IF_ADDREF(mStyleContext);
aStyleContext = mStyleContext;
return NS_OK;
}
NS_METHOD nsFrame::SetStyleContext(nsIPresContext* aPresContext,nsIStyleContext* aContext)
{
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_METHOD nsFrame::DidSetStyleContext(nsIPresContext* aPresContext)
{
return NS_OK;
}
NS_METHOD nsFrame::GetStyleData(nsStyleStructID aSID, nsStyleStruct*& aStyleStruct) const
{
NS_ASSERTION(mStyleContext!=nsnull,"null style context");
if (mStyleContext) {
aStyleStruct = mStyleContext->GetData(aSID);
} else {
aStyleStruct = nsnull;
}
return NS_OK;
}
// Geometric and content parent member functions
NS_METHOD nsFrame::GetContentParent(nsIFrame*& aParent) const
{
aParent = mContentParent;
return NS_OK;
}
NS_METHOD nsFrame::SetContentParent(const nsIFrame* aParent)
{
mContentParent = (nsIFrame*)aParent;
return NS_OK;
}
NS_METHOD nsFrame::GetGeometricParent(nsIFrame*& aParent) const
{
aParent = mGeometricParent;
return NS_OK;
}
NS_METHOD nsFrame::SetGeometricParent(const nsIFrame* aParent)
{
mGeometricParent = (nsIFrame*)aParent;
return NS_OK;
}
// Bounding rect member functions
NS_METHOD nsFrame::GetRect(nsRect& aRect) const
{
aRect = mRect;
return NS_OK;
}
NS_METHOD nsFrame::GetOrigin(nsPoint& aPoint) const
{
aPoint.x = mRect.x;
aPoint.y = mRect.y;
return NS_OK;
}
NS_METHOD nsFrame::GetSize(nsSize& aSize) const
{
aSize.width = mRect.width;
aSize.height = mRect.height;
return NS_OK;
}
NS_METHOD nsFrame::SetRect(const nsRect& aRect)
{
MoveTo(aRect.x, aRect.y);
SizeTo(aRect.width, aRect.height);
return NS_OK;
}
NS_METHOD nsFrame::MoveTo(nscoord aX, nscoord aY)
{
if ((aX != mRect.x) || (aY != mRect.y)) {
mRect.x = aX;
mRect.y = aY;
// Let the view know
if (nsnull != mView) {
// Position view relative to it's parent, not relative to our
// parent frame (our parent frame may not have a view).
nsIView* parentWithView;
nsPoint origin;
GetOffsetFromView(origin, parentWithView);
mView->SetPosition(origin.x, origin.y);
NS_IF_RELEASE(parentWithView);
}
}
return NS_OK;
}
NS_METHOD nsFrame::SizeTo(nscoord aWidth, nscoord aHeight)
{
mRect.width = aWidth;
mRect.height = aHeight;
// Let the view know
if (nsnull != mView) {
mView->SetDimensions(aWidth, aHeight);
}
return NS_OK;
}
// Child frame enumeration
NS_METHOD nsFrame::ChildCount(PRInt32& aChildCount) const
{
aChildCount = 0;
return NS_OK;
}
NS_METHOD nsFrame::ChildAt(PRInt32 aIndex, nsIFrame*& aFrame) const
{
NS_ERROR("not a container");
aFrame = nsnull;
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_METHOD nsFrame::IndexOf(const nsIFrame* aChild, PRInt32& aIndex) const
{
NS_ERROR("not a container");
aIndex = -1;
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_METHOD nsFrame::FirstChild(nsIFrame*& aFirstChild) const
{
aFirstChild = nsnull;
return NS_OK;
}
NS_METHOD nsFrame::NextChild(const nsIFrame* aChild, nsIFrame*& aNextChild) const
{
NS_ERROR("not a container");
aNextChild = nsnull;
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_METHOD nsFrame::PrevChild(const nsIFrame* aChild, nsIFrame*& aPrevChild) const
{
NS_ERROR("not a container");
aPrevChild = nsnull;
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_METHOD nsFrame::LastChild(nsIFrame*& aLastChild) const
{
aLastChild = nsnull;
return NS_OK;
}
NS_METHOD nsFrame::Paint(nsIPresContext& aPresContext,
nsIRenderingContext& aRenderingContext,
const nsRect& aDirtyRect)
{
#if DO_SELECTION
PRBool clearAfterPaint = PR_FALSE;
// Get Content
nsIContent * content;
GetContent(content);
if (content->ChildCount() > 0) {
NS_RELEASE(content);
return NS_OK;
}
if (mSelectionRange == nsnull) { // Get Selection Object
nsIPresShell * shell = aPresContext.GetShell();
nsIDocument * doc = shell->GetDocument();
nsISelection * selection = doc->GetSelection();
mSelectionRange = selection->GetRange();
clearAfterPaint = PR_TRUE;
NS_RELEASE(shell);
NS_RELEASE(selection);
}
if (IsInRange(mSelectionRange->GetStartContent(), mSelectionRange->GetEndContent(), content)) {
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.x+rect.width, rect.y+rect.height);
aRenderingContext.DrawLine(rect.x, rect.y+rect.height, rect.x+rect.width, rect.y);
}
if (clearAfterPaint) {
mSelectionRange = nsnull;
}
NS_RELEASE(content);
#endif
return NS_OK;
}
/**
*
*/
NS_METHOD nsFrame::HandleEvent(nsIPresContext& aPresContext,
nsGUIEvent* aEvent,
nsEventStatus& aEventStatus)
{
#if DO_SELECTION
if (aEvent->message == NS_MOUSE_MOVE && mDoingSelection ||
aEvent->message == NS_MOUSE_LEFT_BUTTON_UP ||
aEvent->message == NS_MOUSE_LEFT_BUTTON_DOWN) {
} else {
aEventStatus = nsEventStatus_eIgnore;
return NS_OK;
}
if (gSelectionDebug) printf("Message: %d-------------------------------------------------------------\n",aEvent->message);
if (aEvent->message == NS_MOUSE_LEFT_BUTTON_UP) {
if (mDoingSelection) {
//mEndSelect = 0;
HandleRelease(aPresContext, aEvent, aEventStatus, this);
}
} else if (aEvent->message == NS_MOUSE_MOVE) {
mDidDrag = PR_TRUE;
//if (gSelectionDebug) printf("HandleEvent(Drag)::mSelectionRange %s\n", mSelectionRange->ToString());
HandleDrag(aPresContext, aEvent, aEventStatus, this);
if (gSelectionDebug) printf("HandleEvent(Drag)::mSelectionRange %s\n", mSelectionRange->ToString());
} else if (aEvent->message == NS_MOUSE_LEFT_BUTTON_DOWN) {
nsIContent * content;
GetContent(content);
BuildContentList(content);
NS_RELEASE(content);
HandlePress(aPresContext, aEvent, aEventStatus, this);
}
#endif
aEventStatus = nsEventStatus_eIgnore;
return NS_OK;
}
/**
* Handles the Mouse Press Event for the frame
*/
NS_METHOD nsFrame::HandlePress(nsIPresContext& aPresContext,
nsGUIEvent* aEvent,
nsEventStatus& aEventStatus,
nsFrame * aFrame)
{
#if DO_SELECTION
nsFrame * currentFrame = aFrame;
nsIPresShell * shell = aPresContext.GetShell();
nsIDocument * doc = shell->GetDocument();
nsISelection * selection = doc->GetSelection();
nsMouseEvent * mouseEvent = (nsMouseEvent *)aEvent;
mSelectionRange = selection->GetRange();
NS_RELEASE(shell);
NS_RELEASE(doc);
NS_RELEASE(selection);
PRInt32 offset = 0;
PRInt32 width = 0;
mDoingSelection = PR_TRUE;
mDidDrag = PR_FALSE;
mCurrentFrame = currentFrame;
mStartPos = GetPosition(aPresContext, aEvent, currentFrame);
// Click count is 1
nsIContent * newContent;
currentFrame->GetContent(newContent);
mCurrentFrame = currentFrame;
if (mStartSelectionPoint == nsnull) {
mStartSelectionPoint = new nsSelectionPoint(nsnull, -1, PR_TRUE);
}
if (mEndSelectionPoint == nsnull) {
mEndSelectionPoint = new nsSelectionPoint(nsnull, -1, PR_TRUE);
}
mSelectionRange->GetStartPoint(mStartSelectionPoint);
mSelectionRange->GetEndPoint(mEndSelectionPoint);
resetContentTrackers();
// keep old start and end
nsIContent * startContent = mSelectionRange->GetStartContent();
nsIContent * endContent = mSelectionRange->GetEndContent();
if (gSelectionDebug) printf("****** Shift[%s]\n", (mouseEvent->isShift?"Down":"Up"));
if (IsInRange(mSelectionRange->GetStartContent(), mSelectionRange->GetEndContent(), newContent)) {
//resetContentTrackers();
if (gTrackerDebug) printf("Adding split range to removed selection. Shift[%s]\n", (mouseEvent->isShift?"Down":"Up"));
if (mouseEvent->isShift) {
nsIContent * prevContent = GetPrevContent(newContent);
nsIContent * nextContent = GetNextContent(newContent);
addRangeToSelectionTrackers(mSelectionRange->GetStartContent(), prevContent, kInsertInRemoveList);
addRangeToSelectionTrackers(nextContent, mSelectionRange->GetEndContent(), kInsertInRemoveList);
mEndSelectionPoint->SetPoint(newContent, mStartPos, PR_FALSE);
} else {
addRangeToSelectionTrackers(mSelectionRange->GetStartContent(), mSelectionRange->GetEndContent(), kInsertInRemoveList); // removed from selection
mEndSelectionPoint->SetPoint(newContent, mStartPos, PR_TRUE);
mStartSelectionPoint->SetPoint(newContent, mStartPos, PR_TRUE);
addRangeToSelectionTrackers(newContent, newContent, kInsertInAddList); // add to selection
}
} else if (IsBefore(newContent, startContent)) {
if (mouseEvent->isShift) {
if (mStartSelectionPoint->IsAnchor()) {
if (gSelectionDebug) printf("New Content is before, Start will now be end\n");
addRangeToSelectionTrackers(mSelectionRange->GetStartContent(), mSelectionRange->GetEndContent(), kInsertInRemoveList); // removed from selection
nsIContent * prevContent = GetPrevContent(newContent);
nsIContent * nextContent = GetNextContent(newContent);
mEndSelectionPoint->SetPoint(mStartSelectionPoint->GetContent(), mStartSelectionPoint->GetOffset(), PR_TRUE);
mStartSelectionPoint->SetPoint(newContent, mStartPos, PR_FALSE);
addRangeToSelectionTrackers(newContent, mEndSelectionPoint->GetContent(), kInsertInAddList); // add to selection
} else {
if (gSelectionDebug) printf("New Content is before, Appending to Beginning\n");
addRangeToSelectionTrackers(newContent, mEndSelectionPoint->GetContent(), kInsertInAddList); // add to selection
mStartSelectionPoint->SetPoint(newContent, mStartPos, PR_FALSE);
}
} else {
if (gSelectionDebug) printf("Adding full range to removed selection. (insert selection)\n");
addRangeToSelectionTrackers(mSelectionRange->GetStartContent(), mSelectionRange->GetEndContent(), kInsertInRemoveList); // removed from selection
mEndSelectionPoint->SetPoint(newContent, mStartPos, PR_TRUE);
mStartSelectionPoint->SetPoint(newContent, mStartPos, PR_TRUE);
addRangeToSelectionTrackers(newContent, newContent, kInsertInAddList); // add to selection
}
} else { // Content is After End
if (mouseEvent->isShift) {
if (mStartSelectionPoint->IsAnchor()) {
if (gSelectionDebug) printf("New Content is after, Append new content\n");
addRangeToSelectionTrackers(mEndSelectionPoint->GetContent(), newContent, kInsertInAddList); // add to selection
mEndSelectionPoint->SetPoint(newContent, mStartPos, PR_FALSE);
} else {
if (gSelectionDebug) printf("New Content is after, End will now be Start\n");
addRangeToSelectionTrackers(mSelectionRange->GetStartContent(), mSelectionRange->GetEndContent(), kInsertInRemoveList); // removed from selection
nsIContent * prevContent = GetPrevContent(newContent);
nsIContent * nextContent = GetNextContent(newContent);
mStartSelectionPoint->SetPoint(mEndSelectionPoint->GetContent(), mEndSelectionPoint->GetOffset(), PR_TRUE);
mEndSelectionPoint->SetPoint(newContent, mStartPos, PR_FALSE);
addRangeToSelectionTrackers(mEndSelectionPoint->GetContent(), newContent, kInsertInAddList); // add to selection
}
} else {
if (gTrackerDebug) printf("Adding full range to removed selection.\n");
addRangeToSelectionTrackers(mSelectionRange->GetStartContent(), mSelectionRange->GetEndContent(), kInsertInRemoveList); // removed from selection
mEndSelectionPoint->SetPoint(newContent, mStartPos, PR_TRUE);
mStartSelectionPoint->SetPoint(newContent, mStartPos, PR_TRUE);
addRangeToSelectionTrackers(newContent, newContent, kInsertInAddList); // add to selection
}
}
/*if (mStartSelectionPoint == nsnull) {
mStartSelectionPoint = new nsSelectionPoint(newContent, mStartPos, PR_TRUE);
} else {
mStartSelectionPoint->SetPoint(newContent, mStartPos, PR_TRUE);
}
if (mEndSelectionPoint == nsnull) {
mEndSelectionPoint = new nsSelectionPoint(newContent, mStartPos, PR_TRUE);
} else {
mEndSelectionPoint->SetPoint(newContent, mStartPos, PR_TRUE);
}*/
mSelectionRange->SetStartPoint(mStartSelectionPoint);
mSelectionRange->SetEndPoint(mEndSelectionPoint);
// [TODO] Recycle sub-selections here?
////fSubSelection = new SubSelection(mSelectionRange);
////selection.setSelection(fSubSelection);
//aPart.setSelection(mSelectionRange);
//updateSelection();
//resetContentTrackers();
//addRangeToSelectionTrackers(newContent, newContent, kInsertInAddList);
//RefreshContentFrames(aPresContext, startContent, endContent);
RefreshFromContentTrackers(aPresContext);
//// [TODO] Set position of caret at start point,
//// [TODO] Turn on caret and have it rendered
////printf("Selection Start Point set.");
//buildContentTree(currentFrame);
//fCurrentParentContentList = eventStrategy.getParentList();
if (gSelectionDebug) printf("HandleEvent::mSelectionRange %s\n", mSelectionRange->ToString());
// Force Update
ForceDrawFrame(this);
NS_RELEASE(newContent);
#endif
aEventStatus = nsEventStatus_eIgnore;
return NS_OK;
}
NS_METHOD nsFrame::HandleDrag(nsIPresContext& aPresContext,
nsGUIEvent* aEvent,
nsEventStatus& aEventStatus,
nsFrame * aFrame)
{
#if DO_SELECTION
// keep old start and end
nsIContent * startContent = mSelectionRange->GetStartContent();
nsIContent * endContent = mSelectionRange->GetEndContent();
PRBool isNewFrame = PR_FALSE; // for testing (rcs)
mDidDrag = PR_TRUE;
if (aFrame != nsnull) {
//printf("nsFrame::HandleDrag\n");
// Check to see if we have changed frame
if (aFrame != mCurrentFrame) {
isNewFrame = PR_TRUE;
// We are in a new Frame!
if (gSelectionDebug) printf("HandleDrag::Different Frame in selection!\n");
// Get Content for current Frame
nsIContent * currentContent;
mCurrentFrame->GetContent(currentContent);
// Get Content for New Frame
nsIContent * newContent;
aFrame->GetContent(newContent);
// Check to see if we are still in the same Content
if (currentContent == newContent) {
if (gSelectionDebug) printf("HandleDrag::New Frame, same content.\n");
AdjustPointsInNewContent(aPresContext, aEvent, aFrame);
} else if (IsBefore(newContent, currentContent)) {
if (gSelectionDebug) printf("HandleDrag::New Frame, is Before.\n");
resetContentTrackers();
NewContentIsBefore(aPresContext, aEvent, newContent, currentContent, aFrame);
} else { // Content is AFTER
if (gSelectionDebug) printf("HandleDrag::New Frame, is After.\n");
resetContentTrackers();
NewContentIsAfter(aPresContext, aEvent, newContent, currentContent, aFrame);
}
mCurrentFrame = aFrame;
NS_RELEASE(currentContent);
NS_RELEASE(newContent);
} else {
//if (gSelectionDebug) printf("HandleDrag::Same Frame.\n");
// Same Frame as before
//if (gSelectionDebug) printf("\nSame Start: %s\n", mStartSelectionPoint->ToString());
//if (gSelectionDebug) printf("Same End: %s\n", mEndSelectionPoint->ToString());
// [TODO] Uncomment these soon
if (mStartSelectionPoint->GetContent() == mEndSelectionPoint->GetContent()) {
//if (gSelectionDebug) printf("Start & End Frame are the same: \n");
if (gSelectionDebug) printf("******** Code is need here!\n********\n");
//AdjustPointsInSameContent(aPresContext, aEvent);
} else {
//if (gSelectionDebug) printf("Start & End Frame are different: \n");
// Get Content for New Frame
nsIContent * newContent;
aFrame->GetContent(newContent);
PRInt32 newPos = -1;
newPos = GetPosition(aPresContext, aEvent, aFrame);
if (newContent == mStartSelectionPoint->GetContent()) {
//if (gSelectionDebug) printf("New Content equals Start Content\n");
mStartSelectionPoint->SetOffset(newPos);
mSelectionRange->SetStartPoint(mStartSelectionPoint);
} else if (newContent == mEndSelectionPoint->GetContent()) {
//if (gSelectionDebug) printf("New Content equals End Content\n");
mEndSelectionPoint->SetOffset(newPos);
mSelectionRange->SetEndPoint(mEndSelectionPoint);
} else {
if (gSelectionDebug) printf("=====\n=====\n=====\n=====\n=====\n=====\n Should NOT be here.\n");
}
//if (gSelectionDebug) printf("*Same Start: "+mStartSelectionPoint->GetOffset()+
// " "+mStartSelectionPoint->IsAnchor()+
// " End: "+mEndSelectionPoint->GetOffset() +
// " "+mEndSelectionPoint->IsAnchor());
NS_RELEASE(newContent);
}
//??doDragRepaint(mCurrentFrame);
}
}
// Force Update
ForceDrawFrame(this);
//RefreshContentFrames(aPresContext, startContent, endContent);
RefreshFromContentTrackers(aPresContext);
#endif
aEventStatus = nsEventStatus_eIgnore;
return NS_OK;
}
NS_METHOD nsFrame::HandleRelease(nsIPresContext& aPresContext,
nsGUIEvent* aEvent,
nsEventStatus& aEventStatus,
nsFrame * aFrame)
{
#if DO_SELECTION
mDoingSelection = PR_FALSE;
#endif
aEventStatus = nsEventStatus_eIgnore;
return NS_OK;
}
//--------------------------------------------------------------------------
//-- GetPosition
//--------------------------------------------------------------------------
PRInt32 nsFrame::GetPosition(nsIPresContext& aPresContext,
nsGUIEvent * aEvent,
nsIFrame * aNewFrame) {
//PRInt32 offset;
//PRInt32 width;
//CalcCursorPosition(aPresContext, aEvent, aNewFrame, offset, width);
//offset += aNewFrame->GetContentOffset();
//return offset;
return -1;
}
/********************************************************
* Adjusts the Starting and Ending TextPoint for a Range
*********************************************************/
void nsFrame::AdjustPointsInNewContent(nsIPresContext& aPresContext,
nsGUIEvent * aEvent,
nsIFrame * aNewFrame) {
// Get new Cursor Poition in the new content
PRInt32 newPos = GetPosition(aPresContext, aEvent, aNewFrame);//, fText);
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 (gSelectionDebug) printf("--\n--\n--\n--\n--\n--\n--\n Should be here. #102\n");
//return;
}
}
/********************************************************
* Adjusts the Starting and Ending TextPoint for a Range
*********************************************************/
void nsFrame::AdjustPointsInSameContent(nsIPresContext& aPresContext,
nsGUIEvent * aEvent) {
// Get new Cursor Poition in the same content
PRInt32 newPos = GetPosition(aPresContext, aEvent, mCurrentFrame);
if (gSelectionDebug) 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 (gSelectionDebug) printf("--\n--\n--\n--\n--\n--\n--\n Should be here. #101\n");
//return;
}
if (gSelectionDebug) printf("Start %s End %s\n", mStartSelectionPoint->ToString(), mEndSelectionPoint->ToString());
//}
}
NS_METHOD nsFrame::GetCursorAt(nsIPresContext& aPresContext,
const nsPoint& aPoint,
nsIFrame** aFrame,
PRInt32& aCursor)
{
aCursor = NS_STYLE_CURSOR_INHERIT;
return NS_OK;
}
// Resize and incremental reflow
NS_METHOD
nsFrame::GetFrameState(nsFrameState& aResult)
{
aResult = mState;
return NS_OK;
}
NS_METHOD
nsFrame::SetFrameState(nsFrameState aNewState)
{
mState = aNewState;
return NS_OK;
}
// Resize reflow methods
NS_METHOD
nsFrame::WillReflow(nsIPresContext& aPresContext)
{
NS_FRAME_TRACE_MSG(("WillReflow: oldState=%x", mState));
mState |= NS_FRAME_IN_REFLOW;
return NS_OK;
}
NS_METHOD
nsFrame::DidReflow(nsIPresContext& aPresContext,
nsDidReflowStatus aStatus)
{
NS_FRAME_TRACE_MSG(("nsFrame::DidReflow: aStatus=%d", aStatus));
if (NS_FRAME_REFLOW_FINISHED == aStatus) {
mState &= ~NS_FRAME_IN_REFLOW;
}
return NS_OK;
}
NS_METHOD nsFrame::ResizeReflow(nsIPresContext* aPresContext,
nsReflowMetrics& aDesiredSize,
const nsSize& aMaxSize,
nsSize* aMaxElementSize,
nsReflowStatus& aStatus)
{
aDesiredSize.width = 0;
aDesiredSize.height = 0;
aDesiredSize.ascent = 0;
aDesiredSize.descent = 0;
if (nsnull != aMaxElementSize) {
aMaxElementSize->width = 0;
aMaxElementSize->height = 0;
}
aStatus = NS_FRAME_COMPLETE;
return NS_OK;
}
NS_METHOD nsFrame::JustifyReflow(nsIPresContext* aPresContext,
nscoord aAvailableSpace)
{
return NS_OK;
}
NS_METHOD nsFrame::IncrementalReflow(nsIPresContext* aPresContext,
nsReflowMetrics& aDesiredSize,
const nsSize& aMaxSize,
nsReflowCommand& aReflowCommand,
nsReflowStatus& aStatus)
{
NS_PRECONDITION(aReflowCommand.GetTarget() == this, "bad target");
// The only type of incremental reflow command we expect to get is a
// content changed reflow command
if (aReflowCommand.GetType() == nsReflowCommand::ContentChanged) {
// Generic response is to reflow the child
return ResizeReflow(aPresContext, aDesiredSize, aMaxSize, nsnull, aStatus);
} else {
NS_ERROR("not a container reflow command handler");
aDesiredSize.width = 0;
aDesiredSize.height = 0;
aDesiredSize.ascent = 0;
aDesiredSize.descent = 0;
aStatus = NS_FRAME_COMPLETE;
return NS_ERROR_NOT_IMPLEMENTED;
}
}
NS_METHOD nsFrame::ContentAppended(nsIPresShell* aShell,
nsIPresContext* aPresContext,
nsIContent* aContainer)
{
return NS_OK;
}
NS_METHOD nsFrame::ContentInserted(nsIPresShell* aShell,
nsIPresContext* aPresContext,
nsIContent* aContainer,
nsIContent* aChild,
PRInt32 aIndexInParent)
{
return NS_OK;
}
NS_METHOD nsFrame::ContentReplaced(nsIPresShell* aShell,
nsIPresContext* aPresContext,
nsIContent* aContainer,
nsIContent* aOldChild,
nsIContent* aNewChild,
PRInt32 aIndexInParent)
{
return NS_OK;
}
NS_METHOD nsFrame::ContentDeleted(nsIPresShell* aShell,
nsIPresContext* aPresContext,
nsIContent* aContainer,
nsIContent* aChild,
PRInt32 aIndexInParent)
{
return NS_OK;
}
NS_METHOD nsFrame::ContentChanged(nsIPresShell* aShell,
nsIPresContext* aPresContext,
nsIContent* aChild,
nsISupports* aSubContent)
{
// Generate a reflow command with this frame as the target frame
nsReflowCommand* cmd = new nsReflowCommand(aPresContext, this,
nsReflowCommand::ContentChanged);
aShell->AppendReflowCommand(cmd);
return NS_OK;
}
NS_METHOD nsFrame::GetReflowMetrics(nsIPresContext* aPresContext,
nsReflowMetrics& aMetrics)
{
aMetrics.width = mRect.width;
aMetrics.height = mRect.height;
aMetrics.ascent = mRect.height;
aMetrics.descent = 0;
return NS_OK;
}
// Flow member functions
NS_METHOD nsFrame::IsSplittable(SplittableType& aIsSplittable) const
{
aIsSplittable = NotSplittable;
return NS_OK;
}
NS_METHOD nsFrame::CreateContinuingFrame(nsIPresContext* aPresContext,
nsIFrame* aParent,
nsIStyleContext* aStyleContext,
nsIFrame*& aContinuingFrame)
{
NS_ERROR("not splittable");
aContinuingFrame = nsnull;
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_METHOD nsFrame::GetPrevInFlow(nsIFrame*& aPrevInFlow) const
{
aPrevInFlow = nsnull;
return NS_OK;
}
NS_METHOD nsFrame::SetPrevInFlow(nsIFrame*)
{
NS_ERROR("not splittable");
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_METHOD nsFrame::GetNextInFlow(nsIFrame*& aNextInFlow) const
{
aNextInFlow = nsnull;
return NS_OK;
}
NS_METHOD nsFrame::SetNextInFlow(nsIFrame*)
{
NS_ERROR("not splittable");
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_METHOD nsFrame::AppendToFlow(nsIFrame* aAfterFrame)
{
NS_ERROR("not splittable");
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_METHOD nsFrame::PrependToFlow(nsIFrame* aBeforeFrame)
{
NS_ERROR("not splittable");
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_METHOD nsFrame::RemoveFromFlow()
{
NS_ERROR("not splittable");
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_METHOD nsFrame::BreakFromPrevFlow()
{
NS_ERROR("not splittable");
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_METHOD nsFrame::BreakFromNextFlow()
{
NS_ERROR("not splittable");
return NS_ERROR_NOT_IMPLEMENTED;
}
// Associated view object
NS_METHOD nsFrame::GetView(nsIView*& aView) const
{
aView = mView;
NS_IF_ADDREF(aView);
return NS_OK;
}
NS_METHOD nsFrame::SetView(nsIView* aView)
{
NS_IF_RELEASE(mView);
if (nsnull != aView) {
mView = aView;
aView->SetFrame(this);
NS_ADDREF(aView);
}
return NS_OK;
}
// Find the first geometric parent that has a view
NS_METHOD nsFrame::GetParentWithView(nsIFrame*& aParent) const
{
aParent = mGeometricParent;
while (nsnull != aParent) {
nsIView* parView;
aParent->GetView(parView);
if (nsnull != parView) {
NS_RELEASE(parView);
break;
}
aParent->GetGeometricParent(aParent);
}
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_METHOD nsFrame::GetOffsetFromView(nsPoint& aOffset, nsIView*& aView) const
{
nsIFrame* frame = (nsIFrame*)this;
aView = nsnull;
aOffset.MoveTo(0, 0);
do {
nsPoint origin;
frame->GetOrigin(origin);
aOffset += origin;
frame->GetGeometricParent(frame);
if (nsnull != frame) {
frame->GetView(aView);
}
} while ((nsnull != frame) && (nsnull == aView));
return NS_OK;
}
NS_METHOD nsFrame::GetWindow(nsIWidget*& aWindow) const
{
nsIFrame* frame = (nsIFrame*)this;
aWindow = nsnull;
while (nsnull != frame) {
nsIView* view;
frame->GetView(view);
if (nsnull != view) {
aWindow = view->GetWidget();
NS_RELEASE(view);
if (nsnull != aWindow) {
break;
}
}
frame->GetParentWithView(frame);
}
NS_POSTCONDITION(nsnull != aWindow, "no window in frame tree");
return NS_OK;
}
// Style sizing methods
NS_METHOD nsFrame::IsPercentageBase(PRBool& aBase) const
{
nsStylePosition* position;
GetStyleData(eStyleStruct_Position, (nsStyleStruct*&)position);
if (position->mPosition != NS_STYLE_POSITION_NORMAL) {
aBase = PR_TRUE;
}
else {
nsStyleDisplay* display;
GetStyleData(eStyleStruct_Display, (nsStyleStruct*&)display);
if ((display->mDisplay == NS_STYLE_DISPLAY_BLOCK) ||
(display->mDisplay == NS_STYLE_DISPLAY_LIST_ITEM)) {
aBase = PR_TRUE;
}
else {
aBase = PR_FALSE;
}
}
return NS_OK;
}
NS_METHOD nsFrame::GetAutoMarginSize(PRUint8 aSide, nscoord& aSize) const
{
aSize = 0; // XXX probably not right, subclass override?
return NS_OK;
}
// Sibling pointer used to link together frames
NS_METHOD nsFrame::GetNextSibling(nsIFrame*& aNextSibling) const
{
aNextSibling = mNextSibling;
return NS_OK;
}
NS_METHOD nsFrame::SetNextSibling(nsIFrame* aNextSibling)
{
mNextSibling = aNextSibling;
return NS_OK;
}
// Debugging
NS_METHOD nsFrame::List(FILE* out, PRInt32 aIndent) const
{
// Indent
for (PRInt32 i = aIndent; --i >= 0; ) fputs(" ", out);
// Output the tag and rect
ListTag(out);
fputs(" ", out);
out << mRect;
if (0 != mState) {
fprintf(out, " [state=%08x]", mState);
}
fputs("<>\n", out);
return NS_OK;
}
// Output the frame's tag
NS_METHOD nsFrame::ListTag(FILE* out) const
{
nsIAtom* tag = mContent->GetTag();
if (tag != nsnull) {
nsAutoString buf;
tag->ToString(buf);
fputs(buf, out);
NS_RELEASE(tag);
}
PRInt32 contentIndex;
GetContentIndex(contentIndex);
fprintf(out, "(%d)@%p", contentIndex, this);
return NS_OK;
}
NS_METHOD nsFrame::VerifyTree() const
{
return NS_OK;
}
//-----------------------------------------------------------------------------------
//------------------------------
void WalkTree(nsIContent * aParent) {
/*if (aParent->ChildCount() == 0) {
nsIDOMText * textContent;
nsresult status = aParent->QueryInterface(kIDOMTextIID, (void**) &textContent);
if (NS_OK == status) {
nsString text;
textContent->GetData(text);
if (text.Length() == 1) {
char * str = text.ToNewCString();
if (str[0] >= 32 && str[0] != '\n') {
fContentArray[fMax++] = aParent;
}
delete str;
} else {
fContentArray[fMax++] = aParent;
}
}
return;
}*/
fContentArray[fMax++] = aParent;
for (PRInt32 i=0;i<aParent->ChildCount();i++) {
nsIContent * node = aParent->ChildAt(i);
WalkTree(node);
}
}
//------------------------------
void PrintContent() {
//static NS_DEFINE_IID(kITextContentIID, NS_ITEXTCONTENT_IID);
static NS_DEFINE_IID(kIDOMTextIID, NS_IDOMTEXT_IID);
nsIDOMText * textContent;
for (int i=0;i<fMax;i++) {
nsresult status = fContentArray[i]->QueryInterface(kIDOMTextIID, (void**) &textContent);
if (NS_OK == status) {
nsString text;
//textContent->GetText(text, 0, textContent->GetLength());
textContent->GetData(text);
char * str = text.ToNewCString();
if (text.Length() > 1) {
printf("%i [%s]\n", i, str);
} else {
printf("%i [%s] %d\n", i, str, str[0]);
}
delete str;
}
}
printf("Total pieces of Content: %d\n", fMax);
}
//------------------------------
void BuildContentList(nsIContent * Start) {
if (fMax > -1) {
return;
}
fMax = 0;
nsIContent * node = Start;
nsIContent * parent = node->GetParent();
// root content
while (parent != nsnull) {
parent = node->GetParent();
if (parent != nsnull) {
node = parent;
}
} // while
//fContentArray = new nsIContent[1024];
WalkTree(node);
if (gSelectionDebug) PrintContent();
}
//--------------------------------------------------------------------------
// Determines whether a piece of content in question is inbetween the two
// piece of content
//--------------------------------------------------------------------------
PRBool IsInRange(nsIContent * aStartContent,
nsIContent * aEndContent,
nsIContent * aContent) {
// Start and End Content is the same, so check against the start
if (aStartContent == aEndContent) {
return aContent == aStartContent;
}
// Check to see if it is equal to the start or the end
if (aContent == aStartContent || aContent == aEndContent) {
return PR_TRUE;
}
if (fMax == -1) {
BuildContentList(aContent);
}
PRBool foundStart = PR_FALSE;
for (PRInt32 i=0;i<fMax;i++) {
nsIContent * node = (nsIContent *)fContentArray[i];
if (node == aStartContent) {
foundStart = PR_TRUE;
} else if (aContent == node) {
return foundStart;
} else if (aEndContent == node) {
return PR_FALSE;
}
}
return PR_FALSE;
}
//--------------------------------------------------------------------------
// Determines whether a piece of content in question is inbetween the two
// piece of content
//--------------------------------------------------------------------------
PRBool IsBefore(nsIContent * aNewContent,
nsIContent * aCurrentContent) {
// Start and End Content is the same, so check against the start
if (aNewContent == aCurrentContent) {
if (gSelectionDebug) printf("IsBefore::New content equals current content\n");
return PR_FALSE;
}
if (fMax == -1) {
BuildContentList(aCurrentContent);
}
for (PRInt32 i=0;i<fMax;i++) {
nsIContent * node = (nsIContent *)fContentArray[i];
if (node == aCurrentContent) {
if (gSelectionDebug) printf("IsBefore::Found Current content\n");
return PR_FALSE;
} else if (node == aNewContent) {
if (gSelectionDebug) printf("IsBefore::Found New content\n");
return PR_TRUE;
}
}
if (gSelectionDebug) printf("IsBefore::Didn't find either\n");
return PR_FALSE;
}
//--------------------------------------------------------------------------
// Return the next previous piece of content
//--------------------------------------------------------------------------
nsIContent * GetPrevContent(nsIContent * aContent) {
for (PRInt32 i=0;i<fMax;i++) {
if (aContent == fContentArray[i]) {
if (i == 0) {
return nsnull;
} else {
return fContentArray[i-1];
}
}
}
return nsnull;
}
//--------------------------------------------------------------------------
// Return the next previous piece of content
//--------------------------------------------------------------------------
nsIContent * GetNextContent(nsIContent * aContent) {
for (PRInt32 i=0;i<fMax;i++) {
if (aContent == fContentArray[i]) {
if (i == fMax-1) {
return nsnull;
} else {
return fContentArray[i+1];
}
}
}
return nsnull;
}
/********************************************************
* Handles a when the cursor enters new content that is before
* the content that the cursor is currently in
*********************************************************/
void nsFrame::NewContentIsBefore(nsIPresContext& aPresContext,
nsGUIEvent * aEvent,
nsIContent * aNewContent,
nsIContent * aCurrentContent,
nsIFrame * aNewFrame)
{
if (gSelectionDebug) printf("New Frame, New content is before.\n");
// Dragging mouse to the left or backward in content
//
// 1) The cursor is being dragged backward in the content
// and the mouse is "after" the anchor in the content
// and the current piece of content is being removed from the selection
//
// This section cover two cases:
// 2) The cursor is being dragged backward in the content
// and the mouse is "before" the anchor in the content
// and each new piece of content is being added to the selection
// Check to see if the new content is in the selection
if (IsInRange(mStartSelectionPoint->GetContent(), mEndSelectionPoint->GetContent(), aNewContent)) {
// Case #1 - Remove Current Content from Selection (at End)
if (gSelectionDebug) printf("Case #1 - (Before) New Content is in selected Range.\n");
if (aNewContent == mStartSelectionPoint->GetContent()) {
// [TODO] This is where we might have to delete from end to new content
// Returns the new End Point, if Start and End are on the
// same content then End Point's Cursor is set to Start's
mEndSelectionPoint->SetContent(mStartSelectionPoint->GetContent());
AdjustPointsInNewContent(aPresContext, aEvent, aNewFrame);
} else {
PRInt32 newPos = GetPosition(aPresContext, aEvent, aNewFrame);
mEndSelectionPoint->SetPoint(aNewContent, newPos, PR_FALSE);
mSelectionRange->SetEndPoint(mEndSelectionPoint);
}
// The current content is being removed from Selection
addRangeToSelectionTrackers(aNewContent, aCurrentContent, kInsertInRemoveList);
} else {
// Case #2 - Add new content to selection (At Start)
if (gSelectionDebug) printf("Case #2 - (Before) New Content is NOT in selected Range. Moving Start Backward.\n");
PRInt32 newPos = GetPosition(aPresContext, aEvent, aNewFrame);
// Create new TextPoint and move Start Point backward
mStartSelectionPoint->SetPoint(aNewContent, newPos, PR_FALSE); // position is set correctly in adjustTextPoints
mSelectionRange->SetStartPoint(mStartSelectionPoint);
// The New Content is added to Tracker
addRangeToSelectionTrackers(aNewContent, aCurrentContent, kInsertInAddList);
}
//??doDragRepaint(fCurrentFrame);
//??doDragRepaint(aNewFrame);
//??if (gSelectionDebug) mSelectionRange.printContent();
}
/********************************************************
* Refreshes each content's frame
*********************************************************/
void RefreshContentFrames(nsIPresContext& aPresContext,
nsIContent * aStartContent,
nsIContent * aEndContent)
{
//-------------------------------------
// Undraw all the current selected frames
// XXX Kludge for now
nsIPresShell * shell = aPresContext.GetShell();
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));
if (aStartContent == aEndContent) {
break;
}
} else if (foundStart) {
ForceDrawFrame((nsFrame *)shell->FindFrameWithContent(node));
} else if (aEndContent == node) {
ForceDrawFrame((nsFrame *)shell->FindFrameWithContent(node));
break;
}
}
//-------------------------------------
}
/********************************************************
* Handles a when the cursor enters new content that is After
* the content that the cursor is currently in
*********************************************************/
void nsFrame::NewContentIsAfter(nsIPresContext& aPresContext,
nsGUIEvent * aEvent,
nsIContent * aNewContent,
nsIContent * aCurrentContent,
nsIFrame * aNewFrame)
{
if (gSelectionDebug) printf("New Frame, New content is after.\n");
// Dragging Mouse to the Right
//
// 3) The cursor is being dragged foward in the content
// and the mouse is "before" the anchor in the content
// and the current piece of content is being removed from the selection
//
// This section cover two cases:
// 4) The cursor is being dragged foward in the content
// and the mouse is "after" the anchor in the content
// and each new piece of content is being added to the selection
//
// Check to see if the new content is in the selection
if (IsInRange(mStartSelectionPoint->GetContent(), mEndSelectionPoint->GetContent(), aNewContent)) {
// Case #3 - Remove Content (from Start)
if (gSelectionDebug) printf("Case #3 - (After) New Content is in selected Range.\n");
PrintIndex("Start: ", mStartSelectionPoint->GetContent());
PrintIndex("Current: ", aNewContent);
// Remove Current Content in Tracker, but leave New Content in Selection
addRangeToSelectionTrackers(mStartSelectionPoint->GetContent(), aNewContent, kInsertInRemoveList);
// [TODO] Always get nearest Text content
PRInt32 newPos = GetPosition(aPresContext, aEvent, aNewFrame);
// Check to see if the new Content is the same as the End Point's
if (aNewContent == mEndSelectionPoint->GetContent()) {
if (gSelectionDebug) printf("New Content matches End Point\n");
mStartSelectionPoint->SetContent(aNewContent);
AdjustPointsInNewContent(aPresContext, aEvent, aNewFrame);
} else {
if (gSelectionDebug) printf("New Content does NOT matches End Point\n");
mStartSelectionPoint->SetPoint(aNewContent, newPos, PR_FALSE);
mSelectionRange->SetStartPoint(mStartSelectionPoint);
}
} else {
if (gSelectionDebug)
printf("Case #4 - (After) Adding New Content\n");
// Case #2 - Adding Content (at End)
// The new content is not in the selection
PRInt32 newPos = GetPosition(aPresContext, aEvent, aNewFrame);
// Check to see if we need to create a new SelectionPoint and add it
// or do we simply move the existing start or end point
if (mStartSelectionPoint->GetContent() == mEndSelectionPoint->GetContent()) {
if (gSelectionDebug) printf("Case #4 - Start & End Content the Same\n");
// Move start or end point
// Get new Cursor Poition in the new content
if (mStartSelectionPoint->IsAnchor()) {
if (gSelectionDebug) printf("Case #4 - Start is Anchor\n");
// Since the Start is the Anchor just adjust the end
// What is up Here????????
//if (gSelectionDebug) printf("Start: %s\n", mStartSelectionPoint->ToString());
//if (gSelectionDebug) printf("End: %s\n", mEndSelectionPoint->ToString());
//if (gSelectionDebug) printf("---->");
// XXX Note this includes the current End point (it should be end->nextContent)
addRangeToSelectionTrackers(mEndSelectionPoint->GetContent(), aNewContent, kInsertInAddList);
mEndSelectionPoint->SetPoint(aNewContent, newPos, PR_FALSE);
mSelectionRange->SetEndPoint(mEndSelectionPoint);
//if (gSelectionDebug) printf("Start: %s\n", mStartSelectionPoint->ToString());
//if (gSelectionDebug) printf("End: %s\n", mEndSelectionPoint->ToString());
} else {
if (gSelectionDebug) printf("Case #4 - Start is NOT Anchor\n");
// Because End was the anchor, we need to set the Start Point to
// the End's Offset and set it to be the new anchor
addRangeToSelectionTrackers(mStartSelectionPoint->GetContent(),
mEndSelectionPoint->GetContent(), kInsertInRemoveList);
int endPos = mEndSelectionPoint->GetOffset();
mStartSelectionPoint->SetOffset(endPos);
mStartSelectionPoint->SetAnchor(PR_TRUE);
// The Start point was being moved so when it jumped to the new frame
// we needed to make it the new End Point
mEndSelectionPoint->SetPoint(aNewContent, newPos, PR_FALSE);
mSelectionRange->SetRange(mStartSelectionPoint, mEndSelectionPoint);
addRangeToSelectionTrackers(mStartSelectionPoint->GetContent(),
mEndSelectionPoint->GetContent(), kInsertInRemoveList);
}
} else {
if (gSelectionDebug) printf("Case #4 - Start & End Content NOT the Same\n");
nsIContent * oldEnd = mEndSelectionPoint->GetContent();
// Adjust the end point
mEndSelectionPoint->SetPoint(aNewContent, newPos, PR_FALSE);
mSelectionRange->SetRange(mStartSelectionPoint, mEndSelectionPoint);
// Add New Content to Selection Tracker
addRangeToSelectionTrackers(oldEnd, mEndSelectionPoint->GetContent(), kInsertInAddList);
}
}
//??if (gSelectionDebug) mSelectionRange.printContent();
}
/**
*
*/
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();
if (viewMgr != nsnull) {
viewMgr->UpdateView(view, rect, 0);
}
}
//viewMgr->UpdateView(view, rect, NS_VMREFRESH_DOUBLE_BUFFER | NS_VMREFRESH_IMMEDIATE);
//NS_RELEASE(view);
}
/////////////////////////////////////////////////
// Selection Tracker Methods
/////////////////////////////////////////////////
//----------------------------
//
//----------------------------
void resetContentTrackers() {
//nsIContent * fTrackerContentArrayRemoveList[1024];
//nsIContent * fTrackerContentArrayAddList[1024];
fTrackerRemoveListMax = 0;
fTrackerAddListMax = 0;
}
//----------------------------
//
//----------------------------
void RefreshFromContentTrackers(nsIPresContext& aPresContext) {
/*FILE * fd = fopen("data.txt", "w");
PRBool foundStart = PR_FALSE;
for (PRInt32 j=0;j<fMax;j++) {
nsIContent * node = (nsIContent *)fContentArray[j];
if (node == mSelectionRange->GetStartContent()) {
foundStart = PR_TRUE;
printf("%d -> 0x%X\n", j, node);
} else if (mSelectionRange->GetEndContent() == node) {
printf("%d -> 0x%X\n", j, node);
break;
} else if (foundStart) {
printf("%d -> 0x%X\n", j, node);
}
}
fflush(fd);
fclose(fd);*/
PRInt32 i;
nsIPresShell * shell = aPresContext.GetShell();
for (i=0;i<fTrackerRemoveListMax;i++) {
ForceDrawFrame((nsFrame *)shell->FindFrameWithContent(fTrackerContentArrayRemoveList[i]));
if (gSelectionDebug) printf("ForceDrawFrame (remove) content 0x%X\n", fTrackerContentArrayRemoveList[i]);
}
for (i=0;i<fTrackerAddListMax;i++) {
ForceDrawFrame((nsFrame *)shell->FindFrameWithContent(fTrackerContentArrayAddList[i]));
if (gSelectionDebug) printf("ForceDrawFrame (add) content 0x%X\n", fTrackerContentArrayAddList[i]);
}
resetContentTrackers();
}
//----------------------------
//
//----------------------------
void addRangeToSelectionTrackers(nsIContent * aStartContent, nsIContent * aEndContent, PRUint32 aType)
{
if (aStartContent == nsnull || aEndContent == nsnull) {
return;
}
nsIContent ** content = (aType == kInsertInRemoveList?fTrackerContentArrayRemoveList:fTrackerContentArrayAddList);
int inx = (aType == kInsertInRemoveList?fTrackerRemoveListMax:fTrackerAddListMax);
//FILE * fd = fopen("data.txt", "w");
//fprintf(fd, "Inx before %d\n", inx);
PRBool foundStart = PR_FALSE;
for (PRInt32 i=0;i<fMax;i++) {
nsIContent * node = (nsIContent *)fContentArray[i];
//fprintf(fd, "Checking 0x%X 0x%X 0x%X\n", node, aStartContent, aEndContent);
if (node == aStartContent) {
//fprintf(fd, "Found start %d\n", i);
content[inx++] = node;
foundStart = PR_TRUE;
if (aStartContent == aEndContent) {
break;
}
} else if (aEndContent == node) {
//fprintf(fd, "Found end %d\n", i);
content[inx++] = node;
break;
} else if (foundStart) {
//fprintf(fd, "adding %d\n", i);
content[inx++] = node;
}
if (inx > 10) {
int x = 0;
}
}
//fprintf(fd, "Inx after %d\n", inx);
//printf("Inx after %d\n", inx);
//fflush(fd);
//fclose(fd);
if (inx > 100) {
int x = 0;
}
if (gSelectionDebug) printf("Adding to %s %d\n", (aType == kInsertInRemoveList?"Remove Array":"Add Array"), inx);
if (aType == kInsertInRemoveList) {
fTrackerRemoveListMax = inx;
} else { // kInsertInAddList
fTrackerAddListMax = inx;
}
}
void PrintIndex(char * aStr, nsIContent * aContent) {
for (PRInt32 j=0;j<fMax;j++) {
nsIContent * node = (nsIContent *)fContentArray[j];
if (node == aContent) {
printf("%s %d\n", aStr, j);
return;
}
}
}
#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();
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