void RenderNamedFlowThread::removeRegionFromThread(RenderRegion* renderRegion)
{
ASSERT(renderRegion);
m_regionRangeMap.clear();
m_regionList.remove(renderRegion);
if (renderRegion->parentNamedFlowThread()) {
if (!renderRegion->isValid()) {
renderRegion->parentNamedFlowThread()->m_observerThreadsSet.remove(this);
// No need to invalidate the regions rectangles. The removed region
// was not taken into account. Just return here.
return;
}
removeDependencyOnFlowThread(renderRegion->parentNamedFlowThread());
}
if (canBeDestroyed())
setMarkForDestruction();
// After removing all the regions in the flow the following layout needs to dispatch the regionLayoutUpdate event
if (m_regionList.isEmpty())
setDispatchRegionLayoutUpdateEvent(true);
invalidateRegions();
}
void RenderNamedFlowThread::removeRegionFromThread(RenderRegion* renderRegion)
{
ASSERT(renderRegion);
RenderNamedFlowFragment* renderNamedFlowFragment = toRenderNamedFlowFragment(renderRegion);
if (renderNamedFlowFragment->parentNamedFlowThread()) {
if (!renderNamedFlowFragment->isValid()) {
ASSERT(m_invalidRegionList.contains(renderNamedFlowFragment));
m_invalidRegionList.remove(renderNamedFlowFragment);
renderNamedFlowFragment->parentNamedFlowThread()->m_observerThreadsSet.remove(this);
// No need to invalidate the regions rectangles. The removed region
// was not taken into account. Just return here.
return;
}
removeDependencyOnFlowThread(renderNamedFlowFragment->parentNamedFlowThread());
}
ASSERT(m_regionList.contains(renderNamedFlowFragment));
bool wasFirst = m_regionList.first() == renderNamedFlowFragment;
m_regionList.remove(renderNamedFlowFragment);
if (canBeDestroyed())
setMarkForDestruction();
if (!m_regionList.isEmpty() && wasFirst)
updateWritingMode();
invalidateRegions();
}
RenderNamedFlowThread::~RenderNamedFlowThread()
{
// The flow thread can be destroyed without unregistering the content nodes if the document is destroyed.
// This can lead to problems because the nodes are still marked as belonging to a flow thread.
clearContentNodes();
// Also leave the NamedFlow object in a consistent state by calling mark for destruction.
setMarkForDestruction();
}
void RenderNamedFlowThread::unregisterNamedFlowContentElement(Element& contentElement)
{
ASSERT(m_contentElements.contains(&contentElement));
ASSERT(contentElement.inNamedFlow());
ASSERT(&contentElement.document() == &document());
contentElement.clearInNamedFlow();
m_contentElements.remove(&contentElement);
if (canBeDestroyed())
setMarkForDestruction();
}
void RenderNamedFlowThread::unregisterNamedFlowContentNode(Node* contentNode)
{
ASSERT(contentNode && contentNode->isElementNode());
ASSERT(m_contentNodes.contains(contentNode));
ASSERT(contentNode->inNamedFlow());
ASSERT(contentNode->document() == document());
contentNode->clearInNamedFlow();
m_contentNodes.remove(contentNode);
if (canBeDestroyed())
setMarkForDestruction();
}
void RenderNamedFlowThread::unregisterNamedFlowContentElement(Element& contentElement)
{
ASSERT(m_contentElements.contains(&contentElement));
ASSERT(contentElement.isNamedFlowContentNode());
ASSERT(&contentElement.document() == &document());
contentElement.clearIsNamedFlowContentNode();
m_contentElements.remove(&contentElement);
if (canBeDestroyed())
setMarkForDestruction();
InspectorInstrumentation::didUnregisterNamedFlowContentElement(&document(), &namedFlow(), &contentElement);
}
