RenderObject* RenderObjectChildList::removeChildNode(RenderObject* owner, RenderObject* oldChild, bool fullRemove)
{
ASSERT(oldChild->parent() == owner);
if (oldChild->isFloatingOrOutOfFlowPositioned())
toRenderBox(oldChild)->removeFloatingOrPositionedChildFromBlockLists();
// So that we'll get the appropriate dirty bit set (either that a normal flow child got yanked or
// that a positioned child got yanked). We also repaint, so that the area exposed when the child
// disappears gets repainted properly.
if (!owner->documentBeingDestroyed() && fullRemove && oldChild->everHadLayout()) {
oldChild->setNeedsLayoutAndPrefWidthsRecalc();
if (oldChild->isBody())
owner->view()->repaint();
else
oldChild->repaint();
}
// If we have a line box wrapper, delete it.
if (oldChild->isBox())
toRenderBox(oldChild)->deleteLineBoxWrapper();
if (!owner->documentBeingDestroyed() && fullRemove) {
// if we remove visible child from an invisible parent, we don't know the layer visibility any more
RenderLayer* layer = 0;
if (owner->style()->visibility() != VISIBLE && oldChild->style()->visibility() == VISIBLE && !oldChild->hasLayer()) {
if ((layer = owner->enclosingLayer()))
layer->dirtyVisibleContentStatus();
}
// Keep our layer hierarchy updated.
if (oldChild->firstChild() || oldChild->hasLayer()) {
if (!layer)
layer = owner->enclosingLayer();
oldChild->removeLayers(layer);
}
if (oldChild->isListItem())
toRenderListItem(oldChild)->updateListMarkerNumbers();
if (oldChild->isOutOfFlowPositioned() && owner->childrenInline())
owner->dirtyLinesFromChangedChild(oldChild);
if (oldChild->isRenderRegion())
toRenderRegion(oldChild)->detachRegion();
if (oldChild->isQuote())
toRenderQuote(oldChild)->detachQuote();
if (oldChild->inRenderFlowThread()) {
if (oldChild->isBox())
oldChild->enclosingRenderFlowThread()->removeRenderBoxRegionInfo(toRenderBox(oldChild));
oldChild->enclosingRenderFlowThread()->clearRenderObjectCustomStyle(oldChild);
}
if (RenderNamedFlowThread* containerFlowThread = renderNamedFlowThreadContainer(owner))
containerFlowThread->removeFlowChild(oldChild);
#if ENABLE(SVG)
// Update cached boundaries in SVG renderers, if a child is removed.
owner->setNeedsBoundariesUpdate();
#endif
}
// If oldChild is the start or end of the selection, then clear the selection to
// avoid problems of invalid pointers.
// FIXME: The FrameSelection should be responsible for this when it
// is notified of DOM mutations.
if (!owner->documentBeingDestroyed() && oldChild->isSelectionBorder())
owner->view()->clearSelection();
// remove the child
if (oldChild->previousSibling())
oldChild->previousSibling()->setNextSibling(oldChild->nextSibling());
if (oldChild->nextSibling())
oldChild->nextSibling()->setPreviousSibling(oldChild->previousSibling());
if (firstChild() == oldChild)
setFirstChild(oldChild->nextSibling());
if (lastChild() == oldChild)
setLastChild(oldChild->previousSibling());
oldChild->setPreviousSibling(0);
oldChild->setNextSibling(0);
oldChild->setParent(0);
// rendererRemovedFromTree walks the whole subtree. We can improve performance
// by skipping this step when destroying the entire tree.
if (!owner->documentBeingDestroyed()) {
RenderCounter::rendererRemovedFromTree(oldChild);
}
if (AXObjectCache::accessibilityEnabled())
owner->document()->axObjectCache()->childrenChanged(owner);
return oldChild;
}
RenderObject* RenderObjectChildList::removeChildNode(RenderObject* owner, RenderObject* oldChild, bool fullRemove)
{
ASSERT(oldChild->parent() == owner);
// So that we'll get the appropriate dirty bit set (either that a normal flow child got yanked or
// that a positioned child got yanked). We also repaint, so that the area exposed when the child
// disappears gets repainted properly.
if (!owner->documentBeingDestroyed() && fullRemove && oldChild->m_everHadLayout) {
oldChild->setNeedsLayoutAndPrefWidthsRecalc();
oldChild->repaint();
}
// If we have a line box wrapper, delete it.
if (oldChild->isBox())
toRenderBox(oldChild)->deleteLineBoxWrapper();
if (!owner->documentBeingDestroyed() && fullRemove) {
// if we remove visible child from an invisible parent, we don't know the layer visibility any more
RenderLayer* layer = 0;
if (owner->style()->visibility() != VISIBLE && oldChild->style()->visibility() == VISIBLE && !oldChild->hasLayer()) {
layer = owner->enclosingLayer();
layer->dirtyVisibleContentStatus();
}
// Keep our layer hierarchy updated.
if (oldChild->firstChild() || oldChild->hasLayer()) {
if (!layer)
layer = owner->enclosingLayer();
oldChild->removeLayers(layer);
}
if (oldChild->isListItem())
toRenderListItem(oldChild)->updateListMarkerNumbers();
if (oldChild->isPositioned() && owner->childrenInline())
owner->dirtyLinesFromChangedChild(oldChild);
}
// If oldChild is the start or end of the selection, then clear the selection to
// avoid problems of invalid pointers.
// FIXME: The SelectionController should be responsible for this when it
// is notified of DOM mutations.
if (!owner->documentBeingDestroyed() && oldChild->isSelectionBorder())
owner->view()->clearSelection();
// remove the child
if (oldChild->previousSibling())
oldChild->previousSibling()->setNextSibling(oldChild->nextSibling());
if (oldChild->nextSibling())
oldChild->nextSibling()->setPreviousSibling(oldChild->previousSibling());
if (firstChild() == oldChild)
setFirstChild(oldChild->nextSibling());
if (lastChild() == oldChild)
setLastChild(oldChild->previousSibling());
oldChild->setPreviousSibling(0);
oldChild->setNextSibling(0);
oldChild->setParent(0);
if (AXObjectCache::accessibilityEnabled())
owner->document()->axObjectCache()->childrenChanged(owner);
return oldChild;
}
