This source file includes following definitions.
- create
- m_isClosed
- enqueueEvent
- cancelEvent
- timerFired
- close
- cancelAllEvents
- hasPendingEvents
#include "config.h"
#include "core/events/GenericEventQueue.h"
#include "core/events/Event.h"
#include "platform/TraceEvent.h"
namespace WebCore {
PassOwnPtr<GenericEventQueue> GenericEventQueue::create(EventTarget* owner)
{
return adoptPtr(new GenericEventQueue(owner));
}
GenericEventQueue::GenericEventQueue(EventTarget* owner)
: m_owner(owner)
, m_timer(this, &GenericEventQueue::timerFired)
, m_isClosed(false)
{
}
GenericEventQueue::~GenericEventQueue()
{
}
bool GenericEventQueue::enqueueEvent(PassRefPtrWillBeRawPtr<Event> event)
{
if (m_isClosed)
return false;
if (event->target() == m_owner)
event->setTarget(nullptr);
TRACE_EVENT_ASYNC_BEGIN1("event", "GenericEventQueue:enqueueEvent", event.get(), "type", event->type().ascii());
m_pendingEvents.append(event);
if (!m_timer.isActive())
m_timer.startOneShot(0, FROM_HERE);
return true;
}
bool GenericEventQueue::cancelEvent(Event* event)
{
bool found = m_pendingEvents.contains(event);
if (found) {
m_pendingEvents.remove(m_pendingEvents.find(event));
TRACE_EVENT_ASYNC_END2("event", "GenericEventQueue:enqueueEvent", event, "type", event->type().ascii(), "status", "cancelled");
}
if (m_pendingEvents.isEmpty())
m_timer.stop();
return found;
}
void GenericEventQueue::timerFired(Timer<GenericEventQueue>*)
{
ASSERT(!m_timer.isActive());
ASSERT(!m_pendingEvents.isEmpty());
WillBeHeapVector<RefPtrWillBeMember<Event> > pendingEvents;
m_pendingEvents.swap(pendingEvents);
RefPtr<EventTarget> protect(m_owner);
for (size_t i = 0; i < pendingEvents.size(); ++i) {
Event* event = pendingEvents[i].get();
EventTarget* target = event->target() ? event->target() : m_owner;
CString type(event->type().ascii());
TRACE_EVENT_ASYNC_STEP_INTO1("event", "GenericEventQueue:enqueueEvent", event, "dispatch", "type", type);
target->dispatchEvent(pendingEvents[i].release());
TRACE_EVENT_ASYNC_END1("event", "GenericEventQueue:enqueueEvent", event, "type", type);
}
}
void GenericEventQueue::close()
{
m_isClosed = true;
cancelAllEvents();
}
void GenericEventQueue::cancelAllEvents()
{
m_timer.stop();
for (size_t i = 0; i < m_pendingEvents.size(); ++i) {
Event* event = m_pendingEvents[i].get();
TRACE_EVENT_ASYNC_END2("event", "GenericEventQueue:enqueueEvent", event, "type", event->type().ascii(), "status", "cancelled");
}
m_pendingEvents.clear();
}
bool GenericEventQueue::hasPendingEvents() const
{
return m_pendingEvents.size();
}
}