void PseudoElement::attach(const AttachContext& context)
{
ASSERT(!renderer());
Element::attach(context);
RenderObject* renderer = this->renderer();
if (!renderer)
return;
RenderStyle* style = renderer->style();
if (style->hasFlowFrom())
return;
if (style->styleType() != BEFORE && style->styleType() != AFTER)
return;
ASSERT(style->contentData());
for (const ContentData* content = style->contentData(); content; content = content->next()) {
RenderObject* child = content->createRenderer(document(), style);
if (renderer->isChildAllowed(child, style)) {
renderer->addChild(child);
if (child->isQuote())
toRenderQuote(child)->attachQuote();
} else
child->destroy();
}
}
void RenderQuote::attachQuote()
{
ASSERT(view());
ASSERT(!m_attached);
ASSERT(!m_next && !m_previous);
ASSERT(isRooted());
if (!view()->renderQuoteHead()) {
view()->setRenderQuoteHead(this);
m_attached = true;
return;
}
for (RenderObject* predecessor = previousInPreOrder(); predecessor; predecessor = predecessor->previousInPreOrder()) {
// Skip unattached predecessors to avoid having stale m_previous pointers
// if the previous node is never attached and is then destroyed.
if (!predecessor->isQuote() || !toRenderQuote(predecessor)->isAttached())
continue;
m_previous = toRenderQuote(predecessor);
m_next = m_previous->m_next;
m_previous->m_next = this;
if (m_next)
m_next->m_previous = this;
break;
}
if (!m_previous) {
m_next = view()->renderQuoteHead();
view()->setRenderQuoteHead(this);
if (m_next)
m_next->m_previous = this;
}
m_attached = true;
for (RenderQuote* quote = this; quote; quote = quote->m_next)
quote->updateDepth();
ASSERT(!m_next || m_next->m_attached);
ASSERT(!m_next || m_next->m_previous == this);
ASSERT(!m_previous || m_previous->m_attached);
ASSERT(!m_previous || m_previous->m_next == this);
}
void RenderQuote::attachQuote()
{
ASSERT(!m_isAttached);
ASSERT(!m_next);
ASSERT(!m_previous);
ASSERT(isRooted());
// Optimize case where this is the first quote in a RenderView by not searching for predecessors in that case.
if (view().renderQuoteHead()) {
for (RenderObject* predecessor = previousInPreOrder(); predecessor; predecessor = predecessor->previousInPreOrder()) {
// Skip unattached predecessors to avoid having stale m_previous pointers
// if the previous node is never attached and is then destroyed.
if (!predecessor->isQuote() || !toRenderQuote(predecessor)->m_isAttached)
continue;
m_previous = toRenderQuote(predecessor);
m_next = m_previous->m_next;
m_previous->m_next = this;
if (m_next)
m_next->m_previous = this;
break;
}
}
if (!m_previous) {
m_next = view().renderQuoteHead();
view().setRenderQuoteHead(this);
if (m_next)
m_next->m_previous = this;
}
m_isAttached = true;
for (RenderQuote* quote = this; quote; quote = quote->m_next)
quote->updateDepth();
ASSERT(!m_next || m_next->m_isAttached);
ASSERT(!m_next || m_next->m_previous == this);
ASSERT(!m_previous || m_previous->m_isAttached);
ASSERT(!m_previous || m_previous->m_next == this);
}
void PseudoElement::didAttachRenderers()
{
RenderObject* renderer = this->renderer();
if (!renderer || !renderer->style()->regionThread().isEmpty())
return;
RenderStyle* style = renderer->style();
ASSERT(style->contentData());
for (const ContentData* content = style->contentData(); content; content = content->next()) {
RenderObject* child = content->createRenderer(document(), style);
if (renderer->isChildAllowed(child, style)) {
renderer->addChild(child);
if (child->isQuote())
toRenderQuote(child)->attachQuote();
} else
child->destroy();
}
}
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;
}
