1/* 2 * Copyright (C) 2012 Victor Carbune (victor@rosedu.org) 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 1. Redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer. 9 * 2. Redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution. 12 * 13 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY 14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR 17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY 21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 24 */ 25 26#include "config.h" 27 28#include "core/events/GenericEventQueue.h" 29 30#include "core/events/Event.h" 31#include "core/inspector/InspectorInstrumentation.h" 32#include "platform/TraceEvent.h" 33 34namespace WebCore { 35 36PassOwnPtrWillBeRawPtr<GenericEventQueue> GenericEventQueue::create(EventTarget* owner) 37{ 38 return adoptPtrWillBeNoop(new GenericEventQueue(owner)); 39} 40 41GenericEventQueue::GenericEventQueue(EventTarget* owner) 42 : m_owner(owner) 43 , m_timer(this, &GenericEventQueue::timerFired) 44 , m_isClosed(false) 45{ 46} 47 48GenericEventQueue::~GenericEventQueue() 49{ 50} 51 52void GenericEventQueue::trace(Visitor* visitor) 53{ 54 visitor->trace(m_owner); 55 visitor->trace(m_pendingEvents); 56 EventQueue::trace(visitor); 57} 58 59bool GenericEventQueue::enqueueEvent(PassRefPtrWillBeRawPtr<Event> event) 60{ 61 if (m_isClosed) 62 return false; 63 64 if (event->target() == m_owner) 65 event->setTarget(nullptr); 66 67 TRACE_EVENT_ASYNC_BEGIN1("event", "GenericEventQueue:enqueueEvent", event.get(), "type", event->type().ascii()); 68 InspectorInstrumentation::didEnqueueEvent(event->target() ? event->target() : m_owner.get(), event.get()); 69 m_pendingEvents.append(event); 70 71 if (!m_timer.isActive()) 72 m_timer.startOneShot(0, FROM_HERE); 73 74 return true; 75} 76 77bool GenericEventQueue::cancelEvent(Event* event) 78{ 79 bool found = m_pendingEvents.contains(event); 80 81 if (found) { 82 InspectorInstrumentation::didRemoveEvent(event->target() ? event->target() : m_owner.get(), event); 83 m_pendingEvents.remove(m_pendingEvents.find(event)); 84 TRACE_EVENT_ASYNC_END2("event", "GenericEventQueue:enqueueEvent", event, "type", event->type().ascii(), "status", "cancelled"); 85 } 86 87 if (m_pendingEvents.isEmpty()) 88 m_timer.stop(); 89 90 return found; 91} 92 93void GenericEventQueue::timerFired(Timer<GenericEventQueue>*) 94{ 95 ASSERT(!m_timer.isActive()); 96 ASSERT(!m_pendingEvents.isEmpty()); 97 98 WillBeHeapVector<RefPtrWillBeMember<Event> > pendingEvents; 99 m_pendingEvents.swap(pendingEvents); 100 101 RefPtrWillBeRawPtr<EventTarget> protect(m_owner.get()); 102 for (size_t i = 0; i < pendingEvents.size(); ++i) { 103 Event* event = pendingEvents[i].get(); 104 EventTarget* target = event->target() ? event->target() : m_owner.get(); 105 CString type(event->type().ascii()); 106 TRACE_EVENT_ASYNC_STEP_INTO1("event", "GenericEventQueue:enqueueEvent", event, "dispatch", "type", type); 107 target->dispatchEvent(pendingEvents[i]); 108 TRACE_EVENT_ASYNC_END1("event", "GenericEventQueue:enqueueEvent", event, "type", type); 109 InspectorInstrumentation::didRemoveEvent(target, event); 110 } 111} 112 113void GenericEventQueue::close() 114{ 115 m_isClosed = true; 116 cancelAllEvents(); 117} 118 119void GenericEventQueue::cancelAllEvents() 120{ 121 m_timer.stop(); 122 123 for (size_t i = 0; i < m_pendingEvents.size(); ++i) { 124 Event* event = m_pendingEvents[i].get(); 125 TRACE_EVENT_ASYNC_END2("event", "GenericEventQueue:enqueueEvent", event, "type", event->type().ascii(), "status", "cancelled"); 126 InspectorInstrumentation::didRemoveEvent(event->target() ? event->target() : m_owner.get(), event); 127 } 128 m_pendingEvents.clear(); 129} 130 131bool GenericEventQueue::hasPendingEvents() const 132{ 133 return m_pendingEvents.size(); 134} 135 136} 137