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32 #include "core/dom/custom/CustomElementCallbackDispatcher.h"
34 #include "core/dom/custom/CustomElementCallbackQueue.h"
35 #include "core/dom/custom/CustomElementScheduler.h"
36 #include "wtf/MainThread.h"
40 size_t CustomElementCallbackDispatcher::s_elementQueueStart = 0;
42 // The base of the stack has a null sentinel value.
43 size_t CustomElementCallbackDispatcher::s_elementQueueEnd = kNumSentinels;
45 CustomElementCallbackDispatcher& CustomElementCallbackDispatcher::instance()
47 DEFINE_STATIC_LOCAL(CustomElementCallbackDispatcher, instance, ());
51 // Dispatches callbacks when popping the processing stack.
52 void CustomElementCallbackDispatcher::processElementQueueAndPop()
54 instance().processElementQueueAndPop(s_elementQueueStart, s_elementQueueEnd);
57 void CustomElementCallbackDispatcher::processElementQueueAndPop(size_t start, size_t end)
59 ASSERT(isMainThread());
60 CustomElementCallbackQueue::ElementQueueId thisQueue = currentElementQueue();
62 for (size_t i = start; i < end; i++) {
64 // The created callback may schedule entered document
66 CallbackDeliveryScope deliveryScope;
67 m_flattenedProcessingStack[i]->processInElementQueue(thisQueue);
70 ASSERT(start == s_elementQueueStart);
71 ASSERT(end == s_elementQueueEnd);
74 // Pop the element queue from the processing stack
75 m_flattenedProcessingStack.resize(start);
76 s_elementQueueEnd = start;
78 if (s_elementQueueStart == kNumSentinels)
79 CustomElementScheduler::callbackDispatcherDidFinish();
82 void CustomElementCallbackDispatcher::enqueue(CustomElementCallbackQueue* callbackQueue)
84 ASSERT(inCallbackDeliveryScope());
86 if (callbackQueue->owner() == currentElementQueue())
89 callbackQueue->setOwner(currentElementQueue());
91 m_flattenedProcessingStack.append(callbackQueue);