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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 "core/dom/custom/V0CustomElementProcessingStack.h"
#include "core/dom/custom/V0CustomElementCallbackQueue.h"
#include "core/dom/custom/V0CustomElementScheduler.h"
namespace blink {
size_t V0CustomElementProcessingStack::s_elementQueueStart = 0;
// The base of the stack has a null sentinel value.
size_t V0CustomElementProcessingStack::s_elementQueueEnd = kNumSentinels;
V0CustomElementProcessingStack& V0CustomElementProcessingStack::instance() {
DEFINE_STATIC_LOCAL(V0CustomElementProcessingStack, instance,
(new V0CustomElementProcessingStack));
return instance;
}
// Dispatches callbacks when popping the processing stack.
void V0CustomElementProcessingStack::processElementQueueAndPop() {
instance().processElementQueueAndPop(s_elementQueueStart, s_elementQueueEnd);
}
void V0CustomElementProcessingStack::processElementQueueAndPop(size_t start,
size_t end) {
DCHECK(isMainThread());
V0CustomElementCallbackQueue::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);
}
DCHECK_EQ(start, s_elementQueueStart);
DCHECK_EQ(end, s_elementQueueEnd);
}
// Pop the element queue from the processing stack
m_flattenedProcessingStack.resize(start);
s_elementQueueEnd = start;
if (s_elementQueueStart == kNumSentinels)
V0CustomElementScheduler::callbackDispatcherDidFinish();
}
void V0CustomElementProcessingStack::enqueue(
V0CustomElementCallbackQueue* callbackQueue) {
DCHECK(inCallbackDeliveryScope());
if (callbackQueue->owner() == currentElementQueue())
return;
callbackQueue->setOwner(currentElementQueue());
m_flattenedProcessingStack.push_back(callbackQueue);
++s_elementQueueEnd;
}
DEFINE_TRACE(V0CustomElementProcessingStack) {
visitor->trace(m_flattenedProcessingStack);
}
} // namespace blink
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