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/*
* 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/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::scheduleAttachedCallback(PassRefPtr<CustomElementLifecycleCallbacks> callbacks, PassRefPtr<Element> element)
{
if (!callbacks->hasAttachedCallback())
return;
CustomElementCallbackQueue* queue = instance().schedule(element);
queue->append(CustomElementCallbackInvocation::createInvocation(callbacks, CustomElementLifecycleCallbacks::Attached));
}
void CustomElementCallbackScheduler::scheduleDetachedCallback(PassRefPtr<CustomElementLifecycleCallbacks> callbacks, PassRefPtr<Element> element)
{
if (!callbacks->hasDetachedCallback())
return;
CustomElementCallbackQueue* queue = instance().schedule(element);
queue->append(CustomElementCallbackInvocation::createInvocation(callbacks, CustomElementLifecycleCallbacks::Detached));
}
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
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