webkitgtk-2.16.5HEADwebkitgtk-2.16.5master

1 files changed, 57 insertions, 0 deletions

diff --git a/Source/WebCore/dom/ActiveDOMCallbackMicrotask.cpp b/Source/WebCore/dom/ActiveDOMCallbackMicrotask.cpp
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+++ b/Source/WebCore/dom/ActiveDOMCallbackMicrotask.cpp
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+/*
+ * Copyright (C) 2015 Apple 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.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS 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 APPLE INC. OR ITS 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 "ActiveDOMCallbackMicrotask.h"
+
+namespace WebCore {
+
+ActiveDOMCallbackMicrotask::ActiveDOMCallbackMicrotask(MicrotaskQueue& queue, ScriptExecutionContext& scriptExecutionContext, Function<void()>&& task)
+    : ActiveDOMCallback(&scriptExecutionContext)
+    , m_queue(queue)
+    , m_task(WTFMove(task))
+{
+}
+
+ActiveDOMCallbackMicrotask::~ActiveDOMCallbackMicrotask()
+{
+}
+
+Microtask::Result ActiveDOMCallbackMicrotask::run()
+{
+    if (!canInvokeCallback())
+        return Result::KeepInQueue;
+
+    m_task();
+    return Result::Done;
+}
+
+void ActiveDOMCallbackMicrotask::contextDestroyed()
+{
+    // NOTE: Calling the function below will cause this to be destroyed.
+    removeSelfFromQueue(m_queue);
+}
+
+} // namespace WebCore