gecko-dev/layout/generic/nsReflowPath.cpp

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 * Contributor(s):
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 *    Randell Jesup <rjesup@wgate.com>
 *    Chris Waterson <waterson@netscape.com>
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#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(nsIPresContext *aPresContext, nsReflowPath *aReflowPath)
{
    aReflowPath->Dump(aPresContext, stdout, 0);
}

void
nsReflowPath::Dump(nsIPresContext *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