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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/CustomElementProcessingStack.h"
#include "core/dom/custom/CustomElementCallbackQueue.h"
#include "core/dom/custom/CustomElementScheduler.h"
#include "wtf/MainThread.h"
namespace blink {
size_t CustomElementProcessingStack::s_elementQueueStart = 0;
// The base of the stack has a null sentinel value.
size_t CustomElementProcessingStack::s_elementQueueEnd = kNumSentinels;
CustomElementProcessingStack& CustomElementProcessingStack::instance()
{
DEFINE_STATIC_LOCAL(CustomElementProcessingStack, instance, ());
return instance;
}
// Dispatches callbacks when popping the processing stack.
void CustomElementProcessingStack::processElementQueueAndPop()
{
instance().processElementQueueAndPop(s_elementQueueStart, s_elementQueueEnd);
}
void CustomElementProcessingStack::processElementQueueAndPop(size_t start, size_t end)
{
ASSERT(isMainThread());
CustomElementCallbackQueue::ElementQueueId thisQueue = currentElementQueue();
for (size_t i = start; i < end; ++i) {
{
// The created callback may schedule entered document
// callbacks.
CallbackDeliveryScope deliveryScope;
m_flattenedProcessingStack[i]->processInElementQueue(thisQueue);
}
ASSERT(start == s_elementQueueStart);
ASSERT(end == s_elementQueueEnd);
}
// Pop the element queue from the processing stack
m_flattenedProcessingStack.resize(start);
s_elementQueueEnd = start;
if (s_elementQueueStart == kNumSentinels)
CustomElementScheduler::callbackDispatcherDidFinish();
}
void CustomElementProcessingStack::enqueue(CustomElementCallbackQueue* callbackQueue)
{
ASSERT(inCallbackDeliveryScope());
if (callbackQueue->owner() == currentElementQueue())
return;
callbackQueue->setOwner(currentElementQueue());
m_flattenedProcessingStack.append(callbackQueue);
++s_elementQueueEnd;
}
} // namespace blink
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