Custom Elements: Encapsulates Async and Sync Queues into one class.

Source/core/dom/custom/CustomElementMicrotaskStepDispatcher.cpp

+// Copyright 2014 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "config.h"
+#include "core/dom/custom/CustomElementMicrotaskStepDispatcher.h"
+
+#include "core/dom/custom/CustomElementMicrotaskImportStep.h"
+#include "core/html/imports/HTMLImportLoader.h"
+
+namespace WebCore {
+
+CustomElementMicrotaskStepDispatcher::CustomElementMicrotaskStepDispatcher()
+    : m_syncQueue(CustomElementSyncMicrotaskQueue::create())
+    , m_asyncQueue(CustomElementAsyncImportMicrotaskQueue::create())
+{
+}
+
+void CustomElementMicrotaskStepDispatcher::enqueue(HTMLImportLoader* parentLoader, PassOwnPtrWillBeRawPtr<CustomElementMicrotaskStep> step)
+{
+    if (parentLoader)
+        parentLoader->microtaskQueue()->enqueue(step);
+    else
+        m_syncQueue->enqueue(step);
+}
+
+void CustomElementMicrotaskStepDispatcher::enqueue(HTMLImportLoader* parentLoader, PassOwnPtrWillBeRawPtr<CustomElementMicrotaskImportStep> step, bool importIsSync)
+{
+    if (importIsSync)
+        enqueue(parentLoader, PassOwnPtrWillBeRawPtr<CustomElementMicrotaskStep>(step));
+    else
+        m_asyncQueue->enqueue(step);
+}
+
+void CustomElementMicrotaskStepDispatcher::dispatch()
+{
+    m_syncQueue->dispatch();
+    if (m_syncQueue->isEmpty())
+        m_asyncQueue->dispatch();
+}
+
+void CustomElementMicrotaskStepDispatcher::trace(Visitor* visitor)
+{
+    visitor->trace(m_syncQueue);
+    visitor->trace(m_asyncQueue);
+}
+
+#if !defined(NDEBUG)
+void CustomElementMicrotaskStepDispatcher::show(unsigned indent)
+{
+    fprintf(stderr, "%*sSync:\n", indent, "");
+    m_syncQueue->show(indent + 1);
+    fprintf(stderr, "%*sAsync:\n", indent, "");
+    m_asyncQueue->show(indent + 1);
+}
+#endif
+
+} // namespace WebCore