Imported WebKit commit 2ea9d364d0f6efa8fa64acf19f451504c59be0e4 (http://svn.webkit.org/repository/webkit/trunk@104285)

1 files changed, 111 insertions, 0 deletions

diff --git a/Source/WebCore/page/FrameActionScheduler.cpp b/Source/WebCore/page/FrameActionScheduler.cpp
new file mode 100644
index 000000000..cf193cc84
--- /dev/null
+++ b/Source/WebCore/page/FrameActionScheduler.cpp
@@ -0,0 +1,111 @@
+/*
+ * Copyright (C) 2011 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:
+ *  * Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *  * 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 THE COPYRIGHT HOLDERS ``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 "FrameActionScheduler.h"
+
+#include "Event.h"
+#include "Node.h"
+#include <wtf/Vector.h>
+
+namespace WebCore {
+
+class EventFrameAction : public FrameAction {
+public:
+    EventFrameAction(PassRefPtr<Event> event, PassRefPtr<Node> target)
+        : m_event(event)
+        , m_eventTarget(target)
+    {
+    }
+
+    virtual void fire()
+    {
+        // Only dispatch events to nodes that are in the document
+        ExceptionCode ec = 0;
+        if (m_eventTarget->inDocument())
+            m_eventTarget->dispatchEvent(m_event, ec);
+    }
+
+private:
+    RefPtr<Event> m_event;
+    RefPtr<Node> m_eventTarget;
+};
+
+FrameActionScheduler::FrameActionScheduler()
+    : m_enqueueActions(0)
+{
+}
+
+FrameActionScheduler::~FrameActionScheduler()
+{
+    clear();
+}
+
+bool FrameActionScheduler::isEmpty() const
+{
+    return m_scheduledActions.isEmpty();
+}
+
+void FrameActionScheduler::clear()
+{
+    m_scheduledActions.clear();
+    m_enqueueActions = 0;
+}
+
+void FrameActionScheduler::pause()
+{
+    ASSERT(isEmpty() || m_enqueueActions);
+    m_enqueueActions++;
+}
+
+void FrameActionScheduler::resume()
+{
+    m_enqueueActions--;
+    if (!m_enqueueActions)
+        dispatch();
+    ASSERT(isEmpty() || m_enqueueActions);
+}
+
+void FrameActionScheduler::dispatch()
+{
+    Vector< OwnPtr<FrameAction> > snapshot;
+    m_scheduledActions.swap(snapshot);
+    
+    for (Vector< OwnPtr<FrameAction> >::iterator i = snapshot.begin(); i != snapshot.end(); ++i)
+        (*i)->fire();
+}
+
+void FrameActionScheduler::scheduleAction(PassOwnPtr<FrameAction> action)
+{
+    m_scheduledActions.append(action);
+}
+
+void FrameActionScheduler::scheduleEvent(PassRefPtr<Event> event, PassRefPtr<Node> eventTarget)
+{
+    scheduleAction(adoptPtr(new EventFrameAction(event, eventTarget)));
+}
+
+
+} // namespace WebCore