void ShadowTree::removeAllShadowRoots()
{
if (!hasShadowRoot())
return;
// Dont protect this ref count.
Element* shadowHost = host();
while (RefPtr<ShadowRoot> oldRoot = m_shadowRoots.removeHead()) {
InspectorInstrumentation::willPopShadowRoot(shadowHost, oldRoot.get());
shadowHost->document()->removeFocusedNodeOfSubtree(oldRoot.get());
if (oldRoot->attached())
oldRoot->detach();
oldRoot->setShadowHost(0);
oldRoot->setPrev(0);
oldRoot->setNext(0);
shadowHost->document()->adoptIfNeeded(oldRoot.get());
ChildNodeRemovalNotifier(shadowHost).notify(oldRoot.get());
}
if (shadowHost->attached())
shadowHost->attachChildrenLazily();
}
void HTMLProgressElement::createShadowSubtree()
{
ASSERT(!hasShadowRoot());
RefPtr<ProgressBarElement> bar = ProgressBarElement::create(document());
m_value = ProgressValueElement::create(document());
bar->appendChild(m_value, ASSERT_NO_EXCEPTION);
RefPtr<ShadowRoot> root = ShadowRoot::create(this, ShadowRoot::CreatingUserAgentShadowRoot, ASSERT_NO_EXCEPTION);
root->appendChild(bar, ASSERT_NO_EXCEPTION);
}
void SVGTRefElement::updateReferencedText()
{
String textContent;
if (Element* target = SVGURIReference::targetElementFromIRIString(href(), document()))
textContent = target->textContent();
ASSERT(hasShadowRoot());
ShadowRoot* root = shadowTree()->oldestShadowRoot();
if (!root->firstChild())
root->appendChild(SVGShadowText::create(document(), textContent), ASSERT_NO_EXCEPTION);
else
root->firstChild()->setTextContent(textContent, ASSERT_NO_EXCEPTION);
}
void SVGTRefElement::detachTarget()
{
// Remove active listeners and clear the text content.
clearEventListener();
String emptyContent;
ExceptionCode ignore = 0;
ASSERT(hasShadowRoot());
Node* container = shadowTree()->oldestShadowRoot()->firstChild();
if (container)
container->setTextContent(emptyContent, ignore);
// Mark the referenced ID as pending.
String id;
SVGURIReference::targetElementFromIRIString(href(), document(), &id);
if (!hasPendingResources() && !id.isEmpty())
document()->accessSVGExtensions()->addPendingResource(id, this);
}
void HTMLTextAreaElement::createShadowSubtree()
{
ASSERT(!hasShadowRoot());
RefPtr<ShadowRoot> root = ShadowRoot::create(this, ShadowRoot::CreatingUserAgentShadowRoot);
root->appendChild(TextControlInnerTextElement::create(document()), ASSERT_NO_EXCEPTION);
}
ShadowTree::~ShadowTree()
{
if (hasShadowRoot())
removeAllShadowRoots();
}