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 "GenericEventQueue.h" 29 30#include "Event.h" 31 32namespace WebCore { 33 34PassOwnPtr<GenericEventQueue> GenericEventQueue::create(EventTarget* owner) 35{ 36 return adoptPtr(new GenericEventQueue(owner)); 37} 38 39GenericEventQueue::GenericEventQueue(EventTarget* owner) 40 : m_owner(owner) 41 , m_timer(this, &GenericEventQueue::timerFired) 42 , m_isClosed(false) 43{ 44} 45 46GenericEventQueue::~GenericEventQueue() 47{ 48} 49 50bool GenericEventQueue::enqueueEvent(PassRefPtr<Event> event) 51{ 52 if (m_isClosed) 53 return false; 54 55 if (event->target() == m_owner) 56 event->setTarget(0); 57 58 m_pendingEvents.append(event); 59 60 if (!m_timer.isActive()) 61 m_timer.startOneShot(0); 62 63 return true; 64} 65 66bool GenericEventQueue::cancelEvent(Event* event) 67{ 68 bool found = m_pendingEvents.contains(event); 69 70 if (found) 71 m_pendingEvents.remove(m_pendingEvents.find(event)); 72 73 if (m_pendingEvents.isEmpty()) 74 m_timer.stop(); 75 76 return found; 77} 78 79void GenericEventQueue::timerFired(Timer<GenericEventQueue>*) 80{ 81 ASSERT(!m_timer.isActive()); 82 ASSERT(!m_pendingEvents.isEmpty()); 83 84 Vector<RefPtr<Event> > pendingEvents; 85 m_pendingEvents.swap(pendingEvents); 86 87 RefPtr<EventTarget> protect(m_owner); 88 for (unsigned i = 0; i < pendingEvents.size(); ++i) { 89 EventTarget* target = pendingEvents[i]->target() ? pendingEvents[i]->target() : m_owner; 90 target->dispatchEvent(pendingEvents[i].release()); 91 } 92} 93 94void GenericEventQueue::close() 95{ 96 m_isClosed = true; 97 98 m_timer.stop(); 99 m_pendingEvents.clear(); 100} 101 102void GenericEventQueue::cancelAllEvents() 103{ 104 m_timer.stop(); 105 m_pendingEvents.clear(); 106} 107 108bool GenericEventQueue::hasPendingEvents() const 109{ 110 return m_pendingEvents.size(); 111} 112 113} 114