bool EventDispatcher::dispatch()
{
TRACE_EVENT0("webkit", "EventDispatcher::dispatch");
#ifndef NDEBUG
ASSERT(!m_eventDispatched);
m_eventDispatched = true;
#endif
ChildNodesLazySnapshot::takeChildNodesLazySnapshot();
m_event->setTarget(EventPath::eventTargetRespectingTargetRules(m_node.get()));
ASSERT(!NoEventDispatchAssertion::isEventDispatchForbidden());
ASSERT(m_event->target());
WindowEventContext windowEventContext(m_event.get(), m_node.get(), topNodeEventContext());
TRACE_EVENT1(TRACE_DISABLED_BY_DEFAULT("devtools.timeline"), "EventDispatch", "type", m_event->type().ascii());
// FIXME(361045): remove InspectorInstrumentation calls once DevTools Timeline migrates to tracing.
InspectorInstrumentationCookie cookie = InspectorInstrumentation::willDispatchEvent(&m_node->document(), *m_event, windowEventContext.window(), m_node.get(), m_event->eventPath());
void* preDispatchEventHandlerResult;
if (dispatchEventPreProcess(preDispatchEventHandlerResult) == ContinueDispatching)
if (dispatchEventAtCapturing(windowEventContext) == ContinueDispatching)
if (dispatchEventAtTarget() == ContinueDispatching)
dispatchEventAtBubbling(windowEventContext);
dispatchEventPostProcess(preDispatchEventHandlerResult);
// Ensure that after event dispatch, the event's target object is the
// outermost shadow DOM boundary.
m_event->setTarget(windowEventContext.target());
m_event->setCurrentTarget(0);
InspectorInstrumentation::didDispatchEvent(cookie);
TRACE_EVENT_INSTANT1(TRACE_DISABLED_BY_DEFAULT("devtools.timeline"), "UpdateCounters", "data", InspectorUpdateCountersEvent::data());
return !m_event->defaultPrevented();
}
void EventPath::ensureWindowEventContext()
{
ASSERT(m_event);
if (!m_windowEventContext)
m_windowEventContext = adoptPtrWillBeNoop(new WindowEventContext(*m_event, topNodeEventContext()));
}
