gecko-dev/layout/generic/nsReflowPath.cpp

134 lines
4.1 KiB
C++

/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is mozilla.org code.
*
* The Initial Developer of the Original Code is
* Netscape Communications Corporation.
* Portions created by the Initial Developer are Copyright (C) 2002
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Mike Shaver <shaver@mozilla.org>
* Randell Jesup <rjesup@wgate.com>
* Chris Waterson <waterson@netscape.com>
*
* Alternatively, the contents of this file may be used under the terms of
* either of the GNU General Public License Version 2 or later (the "GPL"),
* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
#include <stdio.h>
#include "pldhash.h"
#include "prenv.h"
#include "nsReflowPath.h"
#include "nsFrame.h"
#include "nsIFrame.h"
#include "nsHTMLReflowCommand.h"
nsReflowPath::~nsReflowPath()
{
for (PRInt32 i = mChildren.Count() - 1; i >= 0; --i)
delete NS_STATIC_CAST(nsReflowPath *, mChildren[i]);
delete mReflowCommand;
}
nsReflowPath::iterator
nsReflowPath::FindChild(nsIFrame *aFrame)
{
for (PRInt32 i = mChildren.Count() - 1; i >= 0; --i) {
nsReflowPath *subtree = NS_STATIC_CAST(nsReflowPath *, mChildren[i]);
if (subtree->mFrame == aFrame)
return iterator(this, i);
}
return iterator(this, -1);
}
nsReflowPath *
nsReflowPath::GetSubtreeFor(nsIFrame *aFrame) const
{
for (PRInt32 i = mChildren.Count() - 1; i >= 0; --i) {
nsReflowPath *subtree = NS_STATIC_CAST(nsReflowPath *, mChildren[i]);
if (subtree->mFrame == aFrame)
return subtree;
}
return nsnull;
}
nsReflowPath *
nsReflowPath::EnsureSubtreeFor(nsIFrame *aFrame)
{
for (PRInt32 i = mChildren.Count() - 1; i >= 0; --i) {
nsReflowPath *subtree = NS_STATIC_CAST(nsReflowPath *, mChildren[i]);
if (subtree->mFrame == aFrame)
return subtree;
}
nsReflowPath *subtree = new nsReflowPath(aFrame);
mChildren.AppendElement(subtree);
return subtree;
}
void
nsReflowPath::Remove(iterator &aIterator)
{
NS_ASSERTION(aIterator.mNode == this, "inconsistent iterator");
if (aIterator.mIndex >= 0 && aIterator.mIndex < mChildren.Count()) {
delete NS_STATIC_CAST(nsReflowPath *, mChildren[aIterator.mIndex]);
mChildren.RemoveElementAt(aIterator.mIndex);
}
}
#ifdef DEBUG
void
DebugListReflowPath(nsPresContext *aPresContext, nsReflowPath *aReflowPath)
{
aReflowPath->Dump(aPresContext, stdout, 0);
}
void
nsReflowPath::Dump(nsPresContext *aPresContext, FILE *aFile, int depth)
{
fprintf(aFile, "%*s nsReflowPath(%p): ", depth, "", this);
nsFrame::ListTag(aFile, mFrame);
if (mReflowCommand) {
fprintf(aFile, " <- ");
mReflowCommand->List(aFile);
}
fprintf(aFile, "\n");
for (PRInt32 i = 0; i < mChildren.Count(); ++i) {
nsReflowPath *child = NS_STATIC_CAST(nsReflowPath *, mChildren[i]);
child->Dump(aPresContext, aFile, depth + 1);
}
}
#endif