void ScriptRunner::executeScripts()
{
RefPtrWillBeRawPtr<Document> protect(m_document.get());
WillBeHeapDeque<RawPtrWillBeMember<ScriptLoader>> scriptLoaders;
scriptLoaders.swap(m_scriptsToExecuteSoon);
WillBeHeapHashSet<RawPtrWillBeMember<ScriptLoader>> inorderSet;
while (!m_scriptsToExecuteInOrder.isEmpty() && m_scriptsToExecuteInOrder.first()->isReady()) {
ScriptLoader* script = m_scriptsToExecuteInOrder.takeFirst();
inorderSet.add(script);
scriptLoaders.append(script);
}
while (!scriptLoaders.isEmpty()) {
scriptLoaders.takeFirst()->execute();
m_document->decrementLoadEventDelayCount();
if (yieldForHighPriorityWork())
break;
}
// If we have to yield, we must re-enqueue any scriptLoaders back onto the front of
// m_scriptsToExecuteInOrder or m_scriptsToExecuteSoon depending on where the script
// came from.
// NOTE a yield followed by a notifyScriptReady(... ASYNC_EXECUTION) will result in that script executing
// before any pre-existing ScriptsToExecuteInOrder.
while (!scriptLoaders.isEmpty()) {
ScriptLoader* script = scriptLoaders.takeLast();
if (inorderSet.contains(script))
m_scriptsToExecuteInOrder.prepend(script);
else
m_scriptsToExecuteSoon.prepend(script);
}
}
void Fullscreen::eventQueueTimerFired(Timer<Fullscreen>*)
{
// Since we dispatch events in this function, it's possible that the
// document will be detached and GC'd. We protect it here to make sure we
// can finish the function successfully.
RefPtrWillBeRawPtr<Document> protectDocument(document());
WillBeHeapDeque<RefPtrWillBeMember<Event> > eventQueue;
m_eventQueue.swap(eventQueue);
while (!eventQueue.isEmpty()) {
RefPtrWillBeRawPtr<Event> event = eventQueue.takeFirst();
Node* target = event->target()->toNode();
// If the element was removed from our tree, also message the documentElement.
if (!target->inDocument() && document()->documentElement()) {
ASSERT(isPrefixed(event->type()));
eventQueue.append(createEvent(event->type(), *document()->documentElement()));
}
target->dispatchEvent(event);
}
}
void FullscreenElementStack::fullScreenChangeDelayTimerFired(Timer<FullscreenElementStack>*)
{
// Since we dispatch events in this function, it's possible that the
// document will be detached and GC'd. We protect it here to make sure we
// can finish the function successfully.
RefPtrWillBeRawPtr<Document> protectDocument(document());
WillBeHeapDeque<RefPtrWillBeMember<Node> > changeQueue;
m_fullScreenChangeEventTargetQueue.swap(changeQueue);
WillBeHeapDeque<RefPtrWillBeMember<Node> > errorQueue;
m_fullScreenErrorEventTargetQueue.swap(errorQueue);
while (!changeQueue.isEmpty()) {
RefPtrWillBeRawPtr<Node> node = changeQueue.takeFirst();
if (!node)
node = document()->documentElement();
// The dispatchEvent below may have blown away our documentElement.
if (!node)
continue;
// If the element was removed from our tree, also message the documentElement. Since we may
// have a document hierarchy, check that node isn't in another document.
if (!document()->contains(node.get()) && !node->inDocument())
changeQueue.append(document()->documentElement());
node->dispatchEvent(Event::createBubble(EventTypeNames::webkitfullscreenchange));
}
while (!errorQueue.isEmpty()) {
RefPtrWillBeRawPtr<Node> node = errorQueue.takeFirst();
if (!node)
node = document()->documentElement();
// The dispatchEvent below may have blown away our documentElement.
if (!node)
continue;
// If the element was removed from our tree, also message the documentElement. Since we may
// have a document hierarchy, check that node isn't in another document.
if (!document()->contains(node.get()) && !node->inDocument())
errorQueue.append(document()->documentElement());
node->dispatchEvent(Event::createBubble(EventTypeNames::webkitfullscreenerror));
}
}
void WebSocket::EventQueue::dispatchQueuedEvents()
{
if (m_state != Active)
return;
RefPtrWillBeRawPtr<EventQueue> protect(this);
WillBeHeapDeque<RefPtrWillBeMember<Event> > events;
events.swap(m_events);
while (!events.isEmpty()) {
if (m_state == Stopped || m_state == Suspended)
break;
ASSERT(m_state == Active);
ASSERT(m_target->executionContext());
m_target->dispatchEvent(events.takeFirst());
// |this| can be stopped here.
}
if (m_state == Suspended) {
while (!m_events.isEmpty())
events.append(m_events.takeFirst());
events.swap(m_events);
}
}
void Fullscreen::exitFullscreen()
{
// The exitFullscreen() method must run these steps:
// 1. Let doc be the context object. (i.e. "this")
Document* currentDoc = document();
if (!currentDoc->isActive())
return;
// 2. If doc's fullscreen element stack is empty, terminate these steps.
if (m_fullScreenElementStack.isEmpty())
return;
// 3. Let descendants be all the doc's descendant browsing context's documents with a non-empty fullscreen
// element stack (if any), ordered so that the child of the doc is last and the document furthest
// away from the doc is first.
WillBeHeapDeque<RefPtrWillBeMember<Document> > descendants;
for (Frame* descendant = document()->frame() ? document()->frame()->tree().traverseNext() : 0; descendant; descendant = descendant->tree().traverseNext()) {
if (!descendant->isLocalFrame())
continue;
ASSERT(toLocalFrame(descendant)->document());
if (fullscreenElementFrom(*toLocalFrame(descendant)->document()))
descendants.prepend(toLocalFrame(descendant)->document());
}
// 4. For each descendant in descendants, empty descendant's fullscreen element stack, and queue a
// task to fire an event named fullscreenchange with its bubbles attribute set to true on descendant.
for (WillBeHeapDeque<RefPtrWillBeMember<Document> >::iterator i = descendants.begin(); i != descendants.end(); ++i) {
ASSERT(*i);
RequestType requestType = from(**i).m_fullScreenElementStack.last().second;
from(**i).clearFullscreenElementStack();
enqueueChangeEvent(**i, requestType);
}
// 5. While doc is not null, run these substeps:
Element* newTop = 0;
while (currentDoc) {
RequestType requestType = from(*currentDoc).m_fullScreenElementStack.last().second;
// 1. Pop the top element of doc's fullscreen element stack.
from(*currentDoc).popFullscreenElementStack();
// If doc's fullscreen element stack is non-empty and the element now at the top is either
// not in a document or its node document is not doc, repeat this substep.
newTop = fullscreenElementFrom(*currentDoc);
if (newTop && (!newTop->inDocument() || newTop->document() != currentDoc))
continue;
// 2. Queue a task to fire an event named fullscreenchange with its bubbles attribute set to true
// on doc.
enqueueChangeEvent(*currentDoc, requestType);
// 3. If doc's fullscreen element stack is empty and doc's browsing context has a browsing context
// container, set doc to that browsing context container's node document.
if (!newTop && currentDoc->ownerElement()) {
currentDoc = ¤tDoc->ownerElement()->document();
continue;
}
// 4. Otherwise, set doc to null.
currentDoc = 0;
}
// 6. Return, and run the remaining steps asynchronously.
// 7. Optionally, perform some animation.
FrameHost* host = document()->frameHost();
// Speculative fix for engaget.com/videos per crbug.com/336239.
// FIXME: This check is wrong. We ASSERT(document->isActive()) above
// so this should be redundant and should be removed!
if (!host)
return;
// Only exit out of full screen window mode if there are no remaining elements in the
// full screen stack.
if (!newTop) {
// FIXME: if the frame exiting fullscreen is not the frame that entered
// fullscreen (but a parent frame for example), m_fullScreenElement
// might be null. We want to pass an element that is part of the
// document so we will pass the documentElement in that case.
// This should be fix by exiting fullscreen for a frame instead of an
// element, see https://crbug.com/441259
host->chrome().client().exitFullScreenForElement(
m_fullScreenElement ? m_fullScreenElement.get() : document()->documentElement());
return;
}
// Otherwise, notify the chrome of the new full screen element.
host->chrome().client().enterFullScreenForElement(newTop);
}