| /* |
| * 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/CustomElementCallbackScheduler.h" |
| |
| #include "core/dom/Element.h" |
| #include "core/dom/custom/CustomElementCallbackDispatcher.h" |
| #include "core/dom/custom/CustomElementCallbackQueue.h" |
| #include "core/dom/custom/CustomElementLifecycleCallbacks.h" |
| |
| namespace WebCore { |
| |
| void CustomElementCallbackScheduler::scheduleAttributeChangedCallback(PassRefPtr<CustomElementLifecycleCallbacks> callbacks, PassRefPtr<Element> element, const AtomicString& name, const AtomicString& oldValue, const AtomicString& newValue) |
| { |
| if (!callbacks->hasAttributeChangedCallback()) |
| return; |
| |
| CustomElementCallbackQueue* queue = instance().schedule(element); |
| queue->append(CustomElementCallbackInvocation::createAttributeChangedInvocation(callbacks, name, oldValue, newValue)); |
| } |
| |
| void CustomElementCallbackScheduler::scheduleCreatedCallback(PassRefPtr<CustomElementLifecycleCallbacks> callbacks, PassRefPtr<Element> element) |
| { |
| if (!callbacks->hasCreatedCallback()) |
| return; |
| |
| CustomElementCallbackQueue* queue = instance().scheduleInCurrentElementQueue(element); |
| queue->append(CustomElementCallbackInvocation::createInvocation(callbacks, CustomElementLifecycleCallbacks::Created)); |
| } |
| |
| void CustomElementCallbackScheduler::scheduleEnteredViewCallback(PassRefPtr<CustomElementLifecycleCallbacks> callbacks, PassRefPtr<Element> element) |
| { |
| if (!callbacks->hasEnteredViewCallback()) |
| return; |
| |
| CustomElementCallbackQueue* queue = instance().schedule(element); |
| queue->append(CustomElementCallbackInvocation::createInvocation(callbacks, CustomElementLifecycleCallbacks::EnteredView)); |
| } |
| |
| void CustomElementCallbackScheduler::scheduleLeftViewCallback(PassRefPtr<CustomElementLifecycleCallbacks> callbacks, PassRefPtr<Element> element) |
| { |
| if (!callbacks->hasLeftViewCallback()) |
| return; |
| |
| CustomElementCallbackQueue* queue = instance().schedule(element); |
| queue->append(CustomElementCallbackInvocation::createInvocation(callbacks, CustomElementLifecycleCallbacks::LeftView)); |
| } |
| |
| CustomElementCallbackScheduler& CustomElementCallbackScheduler::instance() |
| { |
| DEFINE_STATIC_LOCAL(CustomElementCallbackScheduler, instance, ()); |
| return instance; |
| } |
| |
| CustomElementCallbackQueue* CustomElementCallbackScheduler::ensureCallbackQueue(PassRefPtr<Element> element) |
| { |
| Element* key = element.get(); |
| ElementCallbackQueueMap::iterator it = m_elementCallbackQueueMap.find(key); |
| if (it == m_elementCallbackQueueMap.end()) |
| it = m_elementCallbackQueueMap.add(key, CustomElementCallbackQueue::create(element)).iterator; |
| return it->value.get(); |
| } |
| |
| void CustomElementCallbackScheduler::clearElementCallbackQueueMap() |
| { |
| ElementCallbackQueueMap emptyMap; |
| instance().m_elementCallbackQueueMap.swap(emptyMap); |
| } |
| |
| // Finds or creates the callback queue for element. If the |
| // createdCallback has not finished running, the callback queue is not |
| // moved to the top-of-stack. Otherwise like |
| // scheduleInCurrentElementQueue. |
| CustomElementCallbackQueue* CustomElementCallbackScheduler::schedule(PassRefPtr<Element> element) |
| { |
| CustomElementCallbackQueue* callbackQueue = ensureCallbackQueue(element); |
| if (!callbackQueue->inCreatedCallback()) |
| CustomElementCallbackDispatcher::instance().enqueue(callbackQueue); |
| return callbackQueue; |
| } |
| |
| // Finds or creates the callback queue for element. If the element's |
| // callback queue is scheduled in an earlier processing stack frame, |
| // its owner is set to the element queue on the top of the processing |
| // stack. Because callback queues are processed exhaustively, this |
| // effectively moves the callback queue to the top of the stack. |
| CustomElementCallbackQueue* CustomElementCallbackScheduler::scheduleInCurrentElementQueue(PassRefPtr<Element> element) |
| { |
| CustomElementCallbackQueue* callbackQueue = ensureCallbackQueue(element); |
| CustomElementCallbackDispatcher::instance().enqueue(callbackQueue); |
| return callbackQueue; |
| } |
| |
| } // namespace WebCore |