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// Copyright (c) 2013 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.
#ifndef CONTENT_BROWSER_RENDERER_HOST_SMOOTH_SCROLL_GESTURE_CONTROLLER_H_
#define CONTENT_BROWSER_RENDERER_HOST_SMOOTH_SCROLL_GESTURE_CONTROLLER_H_
#include <map>
#include "base/memory/weak_ptr.h"
#include "base/time/time.h"
#include "base/timer/timer.h"
#include "content/common/content_export.h"
struct ViewHostMsg_BeginSmoothScroll_Params;
namespace content {
class RenderWidgetHost;
class RenderWidgetHostViewPort;
class SmoothScrollGesture;
// Controls SmoothScrollGestures, used to inject synthetic events
// for performance test harness.
class CONTENT_EXPORT SmoothScrollGestureController {
public:
SmoothScrollGestureController();
~SmoothScrollGestureController();
// Initiates a synthetic event stream.
void BeginSmoothScroll(RenderWidgetHostViewPort* view,
const ViewHostMsg_BeginSmoothScroll_Params& params);
base::TimeDelta GetSyntheticScrollMessageInterval() const;
private:
// Called periodically to advance the active scroll gesture after being
// initiated by OnBeginSmoothScroll.
void OnTimer();
base::RepeatingTimer<SmoothScrollGestureController> timer_;
RenderWidgetHost* rwh_;
scoped_refptr<SmoothScrollGesture> pending_smooth_scroll_gesture_;
DISALLOW_COPY_AND_ASSIGN(SmoothScrollGestureController);
};
} // namespace content
#endif // CONTENT_BROWSER_RENDERER_HOST_SMOOTH_SCROLL_GESTURE_CONTROLLER_H_
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