mozilla
/
pjs
зеркало из https://github.com/mozilla/pjs.git
1
0
Форкнуть 0
Код Задачи Пакеты Проекты Релизы Вики Активность
pjs/layout/generic/nsFrame.cpp

1928 строки
58 KiB
C++
Исходник Ответственный История

/* -*- 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 "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 "nsSelectionRange.h"
#include "nsDocument.h"
#include "nsIDeviceContext.h"
#include "nsIPresShell.h"
#include "nsHTMLIIDs.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 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);
// 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;
}
////////////////////////////////////////////////
// Debug Listing Helper Class
////////////////////////////////////////////////
class TableListFilter : public nsIListFilter
{
private:
static char* kTagTable[];
public:
TableListFilter()
{};
virtual ~TableListFilter()
{};
virtual PRBool OutputTag(nsAutoString *aTag) const
{
PRBool result = PR_FALSE;
if (nsnull!=aTag && 0!=aTag->Length())
{
for (PRInt32 i=0; ; i++)
{
const char *tableTag = kTagTable[i];
if (nsnull==tableTag)
break;
if (aTag->EqualsIgnoreCase(tableTag))
{
result = PR_TRUE;
break;
}
}
}
return result;
};
};
char* TableListFilter::kTagTable[] = {
"table",
"tbody", "thead", "tfoot",
"tr", "td", "th",
"colgroup", "col",
//"caption", captions are left out because there's no caption frame
// to hang a decent output method on.
""
};
NS_LAYOUT nsIListFilter * nsIFrame::GetFilter(nsString *aFilterName)
{
nsIListFilter *result = nsnull;
if (nsnull!=aFilterName)
{
if (aFilterName->EqualsIgnoreCase("table"))
{
static nsIListFilter * tableListFilter;
if (nsnull==tableListFilter)
tableListFilter = new TableListFilter();
result = tableListFilter;
}
}
return result;
}
/**
* 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);
mState = NS_FRAME_FIRST_REFLOW;
}
nsFrame::~nsFrame()
{
NS_IF_RELEASE(mContent);
NS_IF_RELEASE(mStyleContext);
if (nsnull != mView) {
// Break association between view and frame
mView->Destroy();
mView = nsnull;
}
if (mStartSelectionPoint != nsnull) {
delete mStartSelectionPoint;
mStartSelectionPoint = nsnull;
}
if (mEndSelectionPoint != nsnull) {
delete mEndSelectionPoint;
mEndSelectionPoint = 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, nsIFrame* aChildList)
{
if (nsnull != aChildList) {
NS_ERROR("not a container");
return NS_ERROR_UNEXPECTED;
}
return NS_OK;
}
NS_IMETHODIMP nsFrame::DeleteFrame(nsIPresContext& aPresContext)
{
//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::SizeOf(nsISizeOfHandler* aHandler) const
{
aHandler->Add(sizeof(*this));
SizeOfWithoutThis(aHandler);
return NS_OK;
}
void
nsFrame::SizeOfWithoutThis(nsISizeOfHandler* aHandler) const
{
// Note: style context's are accounted for via the style system's
// sizeof support
// Note: content is accounted for via the content system's sizeof
// support
}
NS_IMETHODIMP nsFrame::GetContent(nsIContent*& aContent) const
{
if (nsnull != mContent) {
NS_ADDREF(mContent);
}
aContent = mContent;
return NS_OK;
}
NS_IMETHODIMP 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_IMETHODIMP 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_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;
}
// Geometric and content parent member functions
NS_IMETHODIMP nsFrame::GetContentParent(nsIFrame*& aParent) const
{
aParent = mContentParent;
return NS_OK;
}
NS_IMETHODIMP nsFrame::SetContentParent(const nsIFrame* aParent)
{
mContentParent = (nsIFrame*)aParent;
return NS_OK;
}
NS_IMETHODIMP nsFrame::GetGeometricParent(nsIFrame*& aParent) const
{
aParent = mGeometricParent;
return NS_OK;
}
NS_IMETHODIMP nsFrame::SetGeometricParent(const nsIFrame* aParent)
{
mGeometricParent = (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;
// Let the view know
if ((nsnull != mView) && (0 == (mState & NS_FRAME_IN_REFLOW))) {
// 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) && (0 == (mState & NS_FRAME_IN_REFLOW))) {
nsIViewManager *vm;
mView->GetViewManager(vm);
vm->ResizeView(mView, aWidth, aHeight);
NS_RELEASE(vm);
}
return NS_OK;
}
// Child frame enumeration
NS_IMETHODIMP nsFrame::FirstChild(nsIFrame*& aFirstChild) const
{
aFirstChild = nsnull;
return NS_OK;
}
PRBool nsFrame::DisplaySelection(nsIPresContext& aPresContext, PRBool isOkToTurnOn)
{
PRBool result = PR_FALSE;
nsIPresShell *shell = aPresContext.GetShell();
if (nsnull != shell) {
nsIDocument *doc = shell->GetDocument();
if (nsnull != doc) {
result = doc->GetDisplaySelection();
if (isOkToTurnOn && !result) {
doc->SetDisplaySelection(PR_TRUE);
result = PR_TRUE;
}
NS_RELEASE(doc);
}
NS_RELEASE(shell);
}
return result;
}
NS_IMETHODIMP nsFrame::Paint(nsIPresContext& aPresContext,
nsIRenderingContext& aRenderingContext,
const nsRect& aDirtyRect)
{
if (DisplaySelection(aPresContext) == PR_FALSE)
return NS_OK;
PRBool clearAfterPaint = PR_FALSE;
// Get Content
nsIContent * content;
GetContent(content);
PRInt32 n;
content->ChildCount(n);
if (n > 0) {
NS_RELEASE(content);
return NS_OK;
}
nsIPresShell * shell = aPresContext.GetShell();
nsIDocument * doc = shell->GetDocument();
if (mSelectionRange == nsnull) { // Get Selection Object
nsISelection * selection;
doc->GetSelection(selection);
mSelectionRange = selection->GetRange();
clearAfterPaint = PR_TRUE;
NS_RELEASE(selection);
}
nsIContent * selStartContent = mSelectionRange->GetStartContent(); // ref counted
nsIContent * selEndContent = mSelectionRange->GetEndContent(); // ref counted
if (doc->IsInRange(selStartContent, selEndContent, 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_IF_RELEASE(selStartContent);
NS_IF_RELEASE(selEndContent);
NS_RELEASE(content);
NS_RELEASE(doc);
NS_RELEASE(shell);
return NS_OK;
}
/**
*
*/
NS_IMETHODIMP nsFrame::HandleEvent(nsIPresContext& aPresContext,
nsGUIEvent* aEvent,
nsEventStatus& aEventStatus)
{
aEventStatus = nsEventStatus_eIgnore;
if (nsnull != mContent) {
mContent->HandleDOMEvent(aPresContext, (nsEvent*)aEvent, nsnull, DOM_EVENT_INIT, aEventStatus);
}
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);
if (SELECTION_DEBUG) printf("HandleEvent(Drag)::mSelectionRange %s\n", mSelectionRange->ToString());
} 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) == PR_FALSE)
{
aEventStatus = nsEventStatus_eIgnore;
return NS_OK;
}
nsFrame * currentFrame = this;
nsIPresShell * shell = aPresContext.GetShell();
nsMouseEvent * mouseEvent = (nsMouseEvent *)aEvent;
nsIRenderingContext * acx;
gDoc = shell->GetDocument();
nsISelection * selection;
gDoc->GetSelection(selection);
shell->CreateRenderingContext(this, acx);
mSelectionRange = selection->GetRange();
PRUint32 actualOffset = 0;
mDoingSelection = PR_TRUE;
mDidDrag = PR_FALSE;
mCurrentFrame = currentFrame;
GetPosition(aPresContext, acx, aEvent, currentFrame, actualOffset, mStartPos);
// 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();
// Get the Current Start and End Content Pointers
nsIContent * selStartContent = mSelectionRange->GetStartContent(); // ref counted
nsIContent * selEndContent = mSelectionRange->GetEndContent(); // ref counted
if (SELECTION_DEBUG) printf("****** Shift[%s]\n", (mouseEvent->isShift?"Down":"Up"));
PRBool inRange = gDoc->IsInRange(selStartContent, selEndContent, newContent);
if (inRange) {
//resetContentTrackers();
if (TRACKER_DEBUG) printf("Adding split range to removed selection. Shift[%s]\n", (mouseEvent->isShift?"Down":"Up"));
if (mouseEvent->isShift) {
if (newContent == selStartContent && newContent == selEndContent) {
addRangeToSelectionTrackers(newContent, newContent, kInsertInAddList);
} else {
if (selStartContent == newContent) {
// Trackers just do painting so add all the content nodes in the remove list
// even though you might think you shouldn't put the start content node there
addRangeToSelectionTrackers(selStartContent, selEndContent, kInsertInRemoveList);
} else if (selEndContent == newContent) {
// just repaint the end content node
addRangeToSelectionTrackers(selEndContent, selEndContent, kInsertInAddList);
} else {
if (gDoc->IsBefore(newContent, selEndContent)) {
addRangeToSelectionTrackers(newContent, selEndContent, kInsertInRemoveList);
} else {
addRangeToSelectionTrackers(selEndContent, newContent, kInsertInRemoveList);
}
}
}
mEndSelectionPoint->SetPoint(newContent, mStartPos, PR_FALSE);
} else {
addRangeToSelectionTrackers(selStartContent, selEndContent, kInsertInRemoveList); // removed from selection
mStartSelectionPoint->SetPoint(newContent, mStartPos, PR_TRUE);
mEndSelectionPoint->SetPoint(newContent, mStartPos, PR_TRUE);
addRangeToSelectionTrackers(newContent, newContent, kInsertInAddList); // add to selection
}
} else if (gDoc->IsBefore(newContent, selStartContent)) {
if (mouseEvent->isShift) {
if (mStartSelectionPoint->IsAnchor()) {
if (SELECTION_DEBUG) printf("New Content is before, Start will now be end\n");
addRangeToSelectionTrackers(selStartContent, selEndContent, kInsertInRemoveList); // removed from selection
mEndSelectionPoint->SetPoint(selStartContent, mStartSelectionPoint->GetOffset(), PR_TRUE);
mStartSelectionPoint->SetPoint(newContent, mStartPos, PR_FALSE);
// End Point has changed
nsIContent * endcontent = mEndSelectionPoint->GetContent(); // ref counted
addRangeToSelectionTrackers(newContent, endcontent, kInsertInAddList); // add to selection
NS_RELEASE(endcontent);
} else {
if (SELECTION_DEBUG) printf("New Content is before, Appending to Beginning\n");
addRangeToSelectionTrackers(newContent, selEndContent, kInsertInAddList); // add to selection
mStartSelectionPoint->SetPoint(newContent, mStartPos, PR_FALSE);
}
} else {
if (SELECTION_DEBUG) printf("Adding full range to removed selection. (insert selection)\n");
addRangeToSelectionTrackers(selStartContent, selEndContent, 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 (selStartContent == nsnull && selEndContent == nsnull) {
// Shift Click without first clicking in the window
// is interpreted the same as just clicking in a window
mEndSelectionPoint->SetPoint(newContent, mStartPos, PR_TRUE);
mStartSelectionPoint->SetPoint(newContent, mStartPos, PR_TRUE);
addRangeToSelectionTrackers(newContent, newContent, kInsertInAddList); // add to selection
} else if (mStartSelectionPoint->IsAnchor()) {
if (SELECTION_DEBUG) printf("New Content is after, Append new content\n");
addRangeToSelectionTrackers(selEndContent, newContent, kInsertInAddList); // add to selection
mEndSelectionPoint->SetPoint(newContent, mStartPos, PR_FALSE);
} else {
if (SELECTION_DEBUG) printf("New Content is after, End will now be Start\n");
addRangeToSelectionTrackers(selStartContent, selEndContent, kInsertInRemoveList); // removed from selection
mStartSelectionPoint->SetPoint(selEndContent, mEndSelectionPoint->GetOffset(), PR_TRUE);
mEndSelectionPoint->SetPoint(newContent, mStartPos, PR_FALSE);
addRangeToSelectionTrackers(newContent, newContent, kInsertInAddList); // add to selection
}
} else {
if (TRACKER_DEBUG) printf("Adding full range to removed selection.\n");
addRangeToSelectionTrackers(selStartContent, selEndContent, kInsertInRemoveList); // removed from selection
mEndSelectionPoint->SetPoint(newContent, mStartPos, PR_TRUE);
mStartSelectionPoint->SetPoint(newContent, mStartPos, PR_TRUE);
addRangeToSelectionTrackers(newContent, newContent, kInsertInAddList); // add to selection
}
}
mSelectionRange->SetStartPoint(mStartSelectionPoint);
mSelectionRange->SetEndPoint(mEndSelectionPoint);
//if (selStartContent) printf("selStartContent count %d\n", selStartContent->Release());
//if (selEndContent) printf("selEndContent count %d\n", selEndContent->Release());
//if (newContent) printf("newContent count %d\n", newContent->Release());
NS_IF_RELEASE(selStartContent);
NS_IF_RELEASE(selEndContent);
NS_IF_RELEASE(newContent);
RefreshFromContentTrackers(aPresContext);
if (SELECTION_DEBUG) printf("HandleEvent::mSelectionRange %s\n", mSelectionRange->ToString());
NS_IF_RELEASE(acx);
// Force Update
ForceDrawFrame(this);
NS_RELEASE(shell);
NS_RELEASE(selection);
aEventStatus = nsEventStatus_eIgnore;
return NS_OK;
}
NS_IMETHODIMP nsFrame::HandleDrag(nsIPresContext& aPresContext,
nsGUIEvent* aEvent,
nsEventStatus& aEventStatus)
{
if (DisplaySelection(aPresContext) == PR_FALSE)
{
aEventStatus = nsEventStatus_eIgnore;
return NS_OK;
}
// Keep old start and end
nsIContent * startContent = mSelectionRange->GetStartContent(); // ref counted
nsIContent * endContent = mSelectionRange->GetEndContent(); // ref counted
mDidDrag = PR_TRUE;
nsIPresShell *ps = aPresContext.GetShell();
nsIRenderingContext *acx;
ps->CreateRenderingContext(this, acx);
NS_RELEASE(ps);
//if (aFrame != nsnull) {
//printf("nsFrame::HandleDrag\n");
// Check to see if we have changed frame
if (this != mCurrentFrame) {
// We are in a new Frame!
if (SELECTION_DEBUG) printf("HandleDrag::Different Frame in selection!\n");
// Get Content for current Frame
nsIContent * currentContent;
mCurrentFrame->GetContent(currentContent);
// Get Content for New Frame
nsIContent * newContent;
this->GetContent(newContent);
// Check to see if we are still in the same Content
if (currentContent == newContent) {
if (SELECTION_DEBUG) printf("HandleDrag::New Frame, same content.\n");
AdjustPointsInSameContent(aPresContext, acx, aEvent);
addRangeToSelectionTrackers(currentContent, currentContent, kInsertInAddList);
} else if (gDoc->IsBefore(newContent, currentContent)) {
if (SELECTION_DEBUG) printf("HandleDrag::New Frame, is Before.\n");
resetContentTrackers();
NewContentIsBefore(aPresContext, acx, aEvent, newContent, currentContent, this);
} else { // Content is AFTER
if (SELECTION_DEBUG) printf("HandleDrag::New Frame, is After.\n");
resetContentTrackers();
NewContentIsAfter(aPresContext, acx, aEvent, newContent, currentContent, this);
}
mCurrentFrame = this;
NS_RELEASE(currentContent);
NS_RELEASE(newContent);
} else if ((nsnull != mStartSelectionPoint) && (nsnull != mEndSelectionPoint)) {
if (SELECTION_DEBUG) printf("HandleDrag::Same Frame.\n");
// Same Frame as before
//if (SELECTION_DEBUG) printf("\nSame Start: %s\n", mStartSelectionPoint->ToString());
//if (SELECTION_DEBUG) printf("Same End: %s\n", mEndSelectionPoint->ToString());
// [TODO] Uncomment these soon
nsIContent * selStartContent = mStartSelectionPoint->GetContent();
nsIContent * selEndContent = mEndSelectionPoint->GetContent();
if (selStartContent == selEndContent) {
if (SELECTION_DEBUG) printf("Start & End Frame are the same: \n");
AdjustPointsInSameContent(aPresContext, acx, aEvent);
} else {
if (SELECTION_DEBUG) printf("Start & End Frame are different: \n");
// Get Content for New Frame
nsIContent * newContent;
this->GetContent(newContent);
PRInt32 newPos = -1;
PRUint32 actualOffset = 0;
GetPosition(aPresContext, acx, aEvent, this, actualOffset, newPos);
if (newContent == selStartContent) {
if (SELECTION_DEBUG) printf("New Content equals Start Content\n");
mStartSelectionPoint->SetOffset(newPos);
mSelectionRange->SetStartPoint(mStartSelectionPoint);
} else if (newContent == selEndContent) {
if (SELECTION_DEBUG) printf("New Content equals End Content\n");
mEndSelectionPoint->SetOffset(newPos);
mSelectionRange->SetEndPoint(mEndSelectionPoint);
} else {
if (SELECTION_DEBUG) printf("=====\n=====\n=====\n=====\n=====\n=====\n Should NOT be here.\n");
}
//if (SELECTION_DEBUG) printf("*Same Start: "+mStartSelectionPoint->GetOffset()+
// " "+mStartSelectionPoint->IsAnchor()+
// " End: "+mEndSelectionPoint->GetOffset() +
// " "+mEndSelectionPoint->IsAnchor());
NS_RELEASE(newContent);
}
NS_IF_RELEASE(selStartContent);
NS_IF_RELEASE(selEndContent);
}
//}
NS_IF_RELEASE(startContent);
NS_IF_RELEASE(endContent);
NS_IF_RELEASE(acx);
// Force Update
ForceDrawFrame(this);
//RefreshContentFrames(aPresContext, startContent, endContent);
RefreshFromContentTrackers(aPresContext);
aEventStatus = nsEventStatus_eIgnore;
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) {
PRUint32 actualOffset = 0;
// Get new Cursor Poition in the new content
PRInt32 newPos;
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;
}
}
/********************************************************
* Adjusts the Starting and Ending TextPoint for a Range
*********************************************************/
void nsFrame::AdjustPointsInSameContent(nsIPresContext& aPresContext,
nsIRenderingContext * aRendContext,
nsGUIEvent * aEvent) {
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());
//}
}
NS_IMETHODIMP nsFrame::GetCursorAndContentAt(nsIPresContext& aPresContext,
const nsPoint& aPoint,
nsIFrame** aFrame,
nsIContent** aContent,
PRInt32& aCursor)
{
*aContent = mContent;
aCursor = NS_STYLE_CURSOR_INHERIT;
return NS_OK;
}
// Resize and incremental reflow
NS_IMETHODIMP
nsFrame::GetFrameState(nsFrameState& aResult)
{
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);
if (nsnull != mView) {
// 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;
if (eReflowReason_Incremental == aReflowState.reason) {
return NS_ERROR_NOT_IMPLEMENTED;
}
return NS_OK;
}
NS_IMETHODIMP
nsFrame::GetReflowMetrics(nsIPresContext& aPresContext,
nsHTMLReflowMetrics& aMetrics)
{
aMetrics.width = mRect.width;
aMetrics.height = mRect.height;
aMetrics.ascent = mRect.height;
aMetrics.descent = 0;
return NS_OK;
}
NS_IMETHODIMP
nsFrame::FindTextRuns(nsLineLayout& aLineLayout)
{
aLineLayout.EndTextRun();
return NS_OK;
}
NS_IMETHODIMP nsFrame::ContentChanged(nsIPresContext* aPresContext,
nsIContent* aChild,
nsISupports* aSubContent)
{
return NS_OK;
}
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::CreateContinuingFrame(nsIPresContext& aPresContext,
nsIFrame* aParent,
nsIStyleContext* aStyleContext,
nsIFrame*& aContinuingFrame)
{
NS_ERROR("not splittable");
aContinuingFrame = nsnull;
return NS_ERROR_NOT_IMPLEMENTED;
}
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
{
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
{
aParent = mGeometricParent;
while (nsnull != aParent) {
nsIView* parView;
aParent->GetView(parView);
if (nsnull != 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_IMETHODIMP 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_IMETHODIMP nsFrame::GetWindow(nsIWidget*& aWindow) const
{
nsIFrame* frame = (nsIFrame*)this;
aWindow = nsnull;
while (nsnull != frame) {
nsIView* view;
frame->GetView(view);
if (nsnull != view) {
view->GetWidget(aWindow);
if (nsnull != aWindow) {
break;
}
}
frame->GetParentWithView(frame);
}
NS_POSTCONDITION(nsnull != aWindow, "no window in frame tree");
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)) {
aBase = PR_TRUE;
}
else {
aBase = PR_FALSE;
}
}
return NS_OK;
}
NS_IMETHODIMP 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_IMETHODIMP nsFrame::GetNextSibling(nsIFrame*& aNextSibling) const
{
aNextSibling = mNextSibling;
return NS_OK;
}
NS_IMETHODIMP nsFrame::SetNextSibling(nsIFrame* aNextSibling)
{
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, nsIListFilter *aFilter) const
{
// if a filter is present, only output this frame if the filter says we should
nsIAtom* tag;
nsAutoString tagString;
mContent->GetTag(tag);
if (tag != nsnull)
{
tag->ToString(tagString);
NS_RELEASE(tag);
}
if ((nsnull==aFilter) || (PR_TRUE==aFilter->OutputTag(&tagString)))
{
// Indent
for (PRInt32 i = aIndent; --i >= 0; ) fputs(" ", out);
// Output the tag and rect
ListTag(out);
if (nsnull != mView) {
fprintf(out, " [view=%p]", mView);
}
fputs(" ", out);
out << mRect;
if (0 != mState) {
fprintf(out, " [state=%08x]", mState);
}
fputs("<>\n", out);
}
return NS_OK;
}
// Output the frame's tag
NS_IMETHODIMP nsFrame::ListTag(FILE* out) const
{
nsIAtom* tag;
mContent->GetTag(tag);
if (tag != nsnull) {
nsAutoString buf;
tag->ToString(buf);
fputs(buf, out);
NS_RELEASE(tag);
}
fprintf(out, "(%d)@%p", ContentIndexInContainer(this), this);
return NS_OK;
}
NS_IMETHODIMP nsFrame::VerifyTree() const
{
NS_ASSERTION(0 == (mState & NS_FRAME_IN_REFLOW), "frame is in reflow");
return NS_OK;
}
//-----------------------------------------------------------------------------------
/********************************************************
* Handles a when the cursor enters new content that is before
* the content that the cursor is currently in
*********************************************************/
void nsFrame::NewContentIsBefore(nsIPresContext& aPresContext,
nsIRenderingContext * aRendContext,
nsGUIEvent * aEvent,
nsIContent * aNewContent,
nsIContent * aCurrentContent,
nsIFrame * aNewFrame)
{
if (SELECTION_DEBUG) 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
if ((nsnull == mStartSelectionPoint) || (nsnull == mEndSelectionPoint)) {
return;
}
nsIPresShell * shell = aPresContext.GetShell();
nsIDocument * doc = shell->GetDocument();
nsIContent * selStartContent = mStartSelectionPoint->GetContent();
nsIContent * selEndContent = mEndSelectionPoint->GetContent();
PRBool inRange = doc->IsInRange(selStartContent, selEndContent, aNewContent);
// Check to see if the new content is in the selection
if (inRange) {
// Case #1 - Remove Current Content from Selection (at End)
if (SELECTION_DEBUG) printf("Case #1 - (Before) New Content is in selected Range.\n");
if (aNewContent == selStartContent) {
// [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(selStartContent);
AdjustPointsInNewContent(aPresContext, aRendContext, aEvent, aNewFrame);
} else {
PRUint32 actualOffset = 0;
PRInt32 newPos;
GetPosition(aPresContext, aRendContext, aEvent, aNewFrame, actualOffset, newPos);
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 (SELECTION_DEBUG) printf("Case #2 - (Before) New Content is NOT in selected Range. Moving Start Backward.\n");
PRUint32 actualOffset = 0;
PRInt32 newPos;
GetPosition(aPresContext, aRendContext, aEvent, aNewFrame, actualOffset, newPos);
// 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);
}
NS_RELEASE(selStartContent);
NS_RELEASE(selEndContent);
NS_RELEASE(doc);
NS_RELEASE(shell);
}
/********************************************************
* Refreshes each content's frame
*********************************************************/
void RefreshAllContentFrames(nsIFrame * aFrame, nsIContent * aContent)
{
nsIContent* frameContent;
aFrame->GetContent(frameContent);
if (frameContent == aContent) {
ForceDrawFrame((nsFrame *)aFrame);
}
NS_RELEASE(frameContent);
aFrame->FirstChild(aFrame);
while (aFrame) {
RefreshAllContentFrames(aFrame, aContent);
aFrame->GetNextSibling(aFrame);
}
}
/********************************************************
* 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();
nsIFrame * rootFrame = shell->GetRootFrame();
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);
//-------------------------------------
}
/********************************************************
* Handles a when the cursor enters new content that is After
* the content that the cursor is currently in
*********************************************************/
void nsFrame::NewContentIsAfter(nsIPresContext& aPresContext,
nsIRenderingContext * aRendContext,
nsGUIEvent * aEvent,
nsIContent * aNewContent,
nsIContent * aCurrentContent,
nsIFrame * aNewFrame)
{
if (SELECTION_DEBUG) 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
nsIPresShell * shell = aPresContext.GetShell();
nsIDocument * doc = shell->GetDocument();
nsIContent * selStartContent = mStartSelectionPoint->GetContent();
nsIContent * selEndContent = mEndSelectionPoint->GetContent();
PRBool inRange = doc->IsInRange(selStartContent, selEndContent, aNewContent);
if (inRange) {
// Case #3 - Remove Content (from Start)
if (SELECTION_DEBUG) printf("Case #3 - (After) New Content is in selected Range.\n");
// Remove Current Content in Tracker, but leave New Content in Selection
addRangeToSelectionTrackers(mStartSelectionPoint->GetContent(), aNewContent, kInsertInRemoveList);
PRUint32 actualOffset = 0;
// [TODO] Always get nearest Text content
PRInt32 newPos;
GetPosition(aPresContext, aRendContext, aEvent, aNewFrame, actualOffset, newPos);
// Check to see if the new Content is the same as the End Point's
if (aNewContent == selEndContent) {
if (SELECTION_DEBUG) printf("New Content matches End Point\n");
mStartSelectionPoint->SetContent(aNewContent);
AdjustPointsInNewContent(aPresContext, aRendContext, aEvent, aNewFrame);
} else {
if (SELECTION_DEBUG) printf("New Content does NOT matches End Point\n");
mStartSelectionPoint->SetPoint(aNewContent, newPos, PR_FALSE);
mSelectionRange->SetStartPoint(mStartSelectionPoint);
}
} else {
if (SELECTION_DEBUG)
printf("Case #4 - (After) Adding New Content\n");
// Case #2 - Adding Content (at End)
PRUint32 actualOffset = 0;
// The new content is not in the selection
PRInt32 newPos;
GetPosition(aPresContext, aRendContext, aEvent, aNewFrame, actualOffset, newPos);
// 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 (selStartContent == selEndContent) {
if (SELECTION_DEBUG) 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 (SELECTION_DEBUG) printf("Case #4 - Start is Anchor\n");
// Since the Start is the Anchor just adjust the end
// XXX Note this includes the current End point (it should be end->nextContent)
addRangeToSelectionTrackers(selEndContent, aNewContent, kInsertInAddList);
mEndSelectionPoint->SetPoint(aNewContent, newPos, PR_FALSE);
mSelectionRange->SetEndPoint(mEndSelectionPoint);
} else {
if (SELECTION_DEBUG) 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(selStartContent,selEndContent, 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);
// The Content values have changed so go get new contents
nsIContent * startContent = mStartSelectionPoint->GetContent();
nsIContent * endContent = mEndSelectionPoint->GetContent();
addRangeToSelectionTrackers(startContent, endContent, kInsertInRemoveList);
NS_RELEASE(startContent);
NS_RELEASE(endContent);
}
} else {
if (SELECTION_DEBUG) printf("Case #4 - Start & End Content NOT the Same\n");
// Adjust the end point
mEndSelectionPoint->SetPoint(aNewContent, newPos, PR_FALSE);
mSelectionRange->SetRange(mStartSelectionPoint, mEndSelectionPoint);
// Add New Content to Selection Tracker
// The Content values have changed so go get new contents
// NOTE: selEndContent holds the "old" end content pointer
// and endContent hold the "new" content pointer
nsIContent * endContent = mEndSelectionPoint->GetContent();
addRangeToSelectionTrackers(selEndContent, endContent, kInsertInAddList);
NS_RELEASE(endContent);
}
}
NS_RELEASE(selStartContent);
NS_RELEASE(selEndContent);
NS_RELEASE(doc);
NS_RELEASE(shell);
}
/**
*
*/
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);
}
}
/////////////////////////////////////////////////
// Selection Tracker Methods
/////////////////////////////////////////////////
//----------------------------
//
//----------------------------
void resetContentTrackers() {
PRInt32 i;
for (i=0;i<fTrackerRemoveListMax;i++) {
NS_RELEASE(fTrackerContentArrayRemoveList[i]);
}
for (i=0;i<fTrackerAddListMax;i++) {
NS_RELEASE(fTrackerContentArrayAddList[i]);
}
fTrackerRemoveListMax = 0;
fTrackerAddListMax = 0;
}
//----------------------------
//
//----------------------------
void RefreshFromContentTrackers(nsIPresContext& aPresContext) {
PRInt32 i;
nsIPresShell * shell = aPresContext.GetShell();
nsIFrame * rootFrame = shell->GetRootFrame();
for (i=0;i<fTrackerRemoveListMax;i++) {
RefreshAllContentFrames(rootFrame, fTrackerContentArrayRemoveList[i]);
//ForceDrawFrame((nsFrame *)shell->FindFrameWithContent(fTrackerContentArrayRemoveList[i]));
if (SELECTION_DEBUG) printf("ForceDrawFrame (remove) content 0x%X\n", fTrackerContentArrayRemoveList[i]);
}
for (i=0;i<fTrackerAddListMax;i++) {
//nsIFrame * frame = shell->FindFrameWithContent(fTrackerContentArrayAddList[i]);
//ForceDrawFrame((nsFrame *)frame);
RefreshAllContentFrames(rootFrame, fTrackerContentArrayAddList[i]);
if (SELECTION_DEBUG) printf("ForceDrawFrame (add) content 0x%X\n", fTrackerContentArrayAddList[i]);
}
NS_RELEASE(shell);
resetContentTrackers();
}
//----------------------------
//
//----------------------------
void addRangeToSelectionTrackers(nsIContent * aStartContent, nsIContent * aEndContent, PRUint32 aType)
{
if (aStartContent == nsnull || aEndContent == nsnull) {
return;
}
nsIContent ** contentList = (aType == kInsertInRemoveList?fTrackerContentArrayRemoveList:fTrackerContentArrayAddList);
int inx = (aType == kInsertInRemoveList?fTrackerRemoveListMax:fTrackerAddListMax);
NS_ADDREF(aStartContent);
nsIContent * contentPtr = aStartContent;
while (contentPtr != aEndContent) {
contentList[inx++] = contentPtr;
contentPtr = gDoc->GetNextContent(contentPtr); // This does an AddRef
}
contentList[inx++] = aEndContent;
if (SELECTION_DEBUG) printf("Adding to %s %d\n", (aType == kInsertInRemoveList?"Remove Array":"Add Array"), inx);
if (aType == kInsertInRemoveList) {
fTrackerRemoveListMax = inx;
} else { // kInsertInAddList
fTrackerAddListMax = inx;
}
}
#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
Ссылка в новой задаче Показать git blame Копировать постоянную ссылку