зеркало из https://github.com/mozilla/pjs.git
113 строки
3.1 KiB
C++
113 строки
3.1 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 "nsStyleChangeList.h"
|
|
#include "nsStyleConsts.h"
|
|
#include "nsIFrame.h"
|
|
#include "nsIContent.h"
|
|
#include "nsCRT.h"
|
|
|
|
static const PRUint32 kGrowArrayBy = 10;
|
|
|
|
nsStyleChangeList::nsStyleChangeList(void)
|
|
: mArray(mBuffer),
|
|
mArraySize(kStyleChangeBufferSize),
|
|
mCount(0)
|
|
{
|
|
}
|
|
|
|
nsStyleChangeList::~nsStyleChangeList(void)
|
|
{
|
|
Clear();
|
|
}
|
|
|
|
nsresult
|
|
nsStyleChangeList::ChangeAt(PRInt32 aIndex, nsIFrame*& aFrame, nsIContent*& aContent,
|
|
PRInt32& aHint) const
|
|
{
|
|
if ((0 <= aIndex) && (aIndex < mCount)) {
|
|
aFrame = mArray[aIndex].mFrame;
|
|
aContent = mArray[aIndex].mContent;
|
|
aHint = mArray[aIndex].mHint;
|
|
return NS_OK;
|
|
}
|
|
return NS_ERROR_ILLEGAL_VALUE;
|
|
}
|
|
|
|
nsresult
|
|
nsStyleChangeList::AppendChange(nsIFrame* aFrame, nsIContent* aContent, PRInt32 aHint)
|
|
{
|
|
NS_ASSERTION(aFrame || (aHint >= NS_STYLE_HINT_FRAMECHANGE), "must have frame");
|
|
|
|
if ((0 < mCount) && (NS_STYLE_HINT_FRAMECHANGE == aHint)) { // filter out all other changes for same content
|
|
if (aContent) {
|
|
PRInt32 index = mCount;
|
|
while (0 < index--) {
|
|
if (aContent == mArray[index].mContent) { // remove this change
|
|
mCount--;
|
|
if (index < mCount) { // move later changes down
|
|
nsCRT::memcpy(&(mArray[index]), &(mArray[index + 1]),
|
|
(mCount - index) * sizeof(nsStyleChangeData));
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
PRInt32 last = mCount - 1;
|
|
if ((0 < mCount) && (aFrame == mArray[last].mFrame)) { // same as last frame
|
|
if (mArray[last].mHint < aHint) {
|
|
mArray[last].mHint = aHint;
|
|
}
|
|
}
|
|
else {
|
|
if (mCount == mArraySize) {
|
|
PRInt32 newSize = mArraySize + kGrowArrayBy;
|
|
nsStyleChangeData* newArray = new nsStyleChangeData[newSize];
|
|
if (newArray) {
|
|
nsCRT::memcpy(newArray, mArray, mCount * sizeof(nsStyleChangeData));
|
|
if (mArray != mBuffer) {
|
|
delete [] mArray;
|
|
}
|
|
mArray = newArray;
|
|
mArraySize = newSize;
|
|
}
|
|
else {
|
|
return NS_ERROR_OUT_OF_MEMORY;
|
|
}
|
|
}
|
|
mArray[mCount].mFrame = aFrame;
|
|
mArray[mCount].mContent = aContent;
|
|
mArray[mCount].mHint = aHint;
|
|
mCount++;
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
void
|
|
nsStyleChangeList::Clear()
|
|
{
|
|
if (mArray != mBuffer) {
|
|
delete [] mArray;
|
|
mArray = mBuffer;
|
|
mArraySize = kStyleChangeBufferSize;
|
|
}
|
|
mCount = 0;
|
|
}
|
|
|