1/* 2 * Copyright (C) 2013 Google Inc. All rights reserved. 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 * 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer 12 * in the documentation and/or other materials provided with the 13 * distribution. 14 * 3. Neither the name of Google Inc. nor the names of its contributors 15 * may be used to endorse or promote products derived from this 16 * software without specific prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29 */ 30 31#include "config.h" 32#include "core/dom/custom/CustomElementCallbackQueue.h" 33 34namespace blink { 35 36PassOwnPtrWillBeRawPtr<CustomElementCallbackQueue> CustomElementCallbackQueue::create(PassRefPtrWillBeRawPtr<Element> element) 37{ 38 return adoptPtrWillBeNoop(new CustomElementCallbackQueue(element)); 39} 40 41CustomElementCallbackQueue::CustomElementCallbackQueue(PassRefPtrWillBeRawPtr<Element> element) 42 : m_element(element) 43 , m_owner(-1) 44 , m_index(0) 45 , m_inCreatedCallback(false) 46{ 47} 48 49bool CustomElementCallbackQueue::processInElementQueue(ElementQueueId caller) 50{ 51 ASSERT(!m_inCreatedCallback); 52 bool didWork = false; 53 54 while (m_index < m_queue.size() && owner() == caller) { 55 m_inCreatedCallback = m_queue[m_index]->isCreatedCallback(); 56 57 // dispatch() may cause recursion which steals this callback 58 // queue and reenters processInQueue. owner() == caller 59 // detects this recursion and cedes processing. 60 m_queue[m_index++]->dispatch(m_element.get()); 61 m_inCreatedCallback = false; 62 didWork = true; 63 } 64 65 if (owner() == caller && m_index == m_queue.size()) { 66 // This processInQueue exhausted the queue; shrink it. 67 m_index = 0; 68 m_queue.resize(0); 69 m_owner = -1; 70 } 71 72 return didWork; 73} 74 75void CustomElementCallbackQueue::trace(Visitor* visitor) 76{ 77 visitor->trace(m_element); 78} 79 80} // namespace blink 81