1 files changed, 96 insertions, 0 deletions
diff --git a/Source/WebCore/replay/EventLoopInputDispatcher.h b/Source/WebCore/replay/EventLoopInputDispatcher.h
new file mode 100644
index 000000000..2067e78d4
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+++ b/Source/WebCore/replay/EventLoopInputDispatcher.h
@@ -0,0 +1,96 @@
+/*
+ * Copyright (C) 2013 University of Washington. All rights reserved.
+ * Copyright (C) 2014 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 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
+ * HOLDER 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.
+ */
+
+#pragma once
+
+#if ENABLE(WEB_REPLAY)
+
+#include "EventLoopInput.h"
+#include "ReplayingInputCursor.h"
+#include "Timer.h"
+#include <wtf/Noncopyable.h>
+#include <wtf/text/WTFString.h>
+
+namespace WebCore {
+
+class Page;
+
+enum class DispatchSpeed {
+    RealTime,
+    FastForward,
+};
+
+class EventLoopInputDispatcherClient {
+public:
+    EventLoopInputDispatcherClient() { }
+    virtual ~EventLoopInputDispatcherClient() { }
+
+    virtual void willDispatchInput(const EventLoopInputBase&) =0;
+    virtual void didDispatchInput(const EventLoopInputBase&) =0;
+    virtual void didDispatchFinalInput() =0;
+};
+
+class EventLoopInputDispatcher {
+    WTF_MAKE_NONCOPYABLE(EventLoopInputDispatcher);
+public:
+    EventLoopInputDispatcher(Page&, ReplayingInputCursor&, EventLoopInputDispatcherClient*);
+
+    void run();
+    void pause();
+
+    void setDispatchSpeed(DispatchSpeed speed) { m_speed = speed; }
+    DispatchSpeed dispatchSpeed() const { return m_speed; }
+
+    bool isRunning() const { return m_running; }
+    bool isDispatching() const { return m_dispatching; }
+private:
+    void dispatchInputSoon();
+    void dispatchInput();
+    void timerFired();
+
+    Page& m_page;
+    EventLoopInputDispatcherClient* m_client;
+    ReplayingInputCursor& m_cursor;
+    Timer m_timer;
+
+    // This data is valid when an event loop input is presently dispatching.
+    EventLoopInputData m_currentWork;
+    // Whether the dispatcher is currently calling out to an inputs' dispatch() method.
+    bool m_dispatching {false};
+    // Whether the dispatcher is waiting to dispatch or actively dispatching inputs.
+    bool m_running {false};
+
+    DispatchSpeed m_speed;
+    // The time at which the last input dispatch() method was called.
+    double m_previousDispatchStartTime {0.0};
+    // The timestamp specified by the last dispatched input.
+    double m_previousInputTimestamp {0.0};
+};
+
+} // namespace WebCore
+
+#endif // ENABLE(WEB_REPLAY)