/* * Copyright (C) 2013 Google Inc. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer * in the documentation and/or other materials provided with the * distribution. * 3. Neither the name of Google Inc. nor the names of its contributors * may be used to endorse or promote products derived from this * software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #include "config.h" #include "core/dom/custom/CustomElementCallbackQueue.h" namespace WebCore { PassOwnPtr<CustomElementCallbackQueue> CustomElementCallbackQueue::create(PassRefPtr<Element> element) { return adoptPtr(new CustomElementCallbackQueue(element)); } CustomElementCallbackQueue::CustomElementCallbackQueue(PassRefPtr<Element> element) : m_element(element) , m_owner(-1) , m_index(0) , m_inCreatedCallback(false) { } bool CustomElementCallbackQueue::processInElementQueue(ElementQueueId caller) { ASSERT(!m_inCreatedCallback); bool didWork = false; while (m_index < m_queue.size() && owner() == caller) { m_inCreatedCallback = m_queue[m_index]->isCreated(); // dispatch() may cause recursion which steals this callback // queue and reenters processInQueue. owner() == caller // detects this recursion and cedes processing. m_queue[m_index++]->dispatch(m_element.get()); m_inCreatedCallback = false; didWork = true; } if (owner() == caller && m_index == m_queue.size()) { // This processInQueue exhausted the queue; shrink it. m_index = 0; m_queue.resize(0); m_owner = -1; } return didWork; } } // namespace WebCore