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// Copyright 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_INPUT_TOUCHSCREEN_TAP_SUPPRESSION_CONTROLLER_H_
#define CONTENT_BROWSER_RENDERER_HOST_INPUT_TOUCHSCREEN_TAP_SUPPRESSION_CONTROLLER_H_
#include "base/memory/scoped_ptr.h"
#include "content/browser/renderer_host/input/tap_suppression_controller.h"
#include "content/browser/renderer_host/input/tap_suppression_controller_client.h"
#include "content/port/browser/event_with_latency_info.h"
namespace content {
class GestureEventQueue;
// Controls the suppression of touchscreen taps immediately following the
// dispatch of a GestureFlingCancel event.
class TouchscreenTapSuppressionController
: public TapSuppressionControllerClient {
public:
TouchscreenTapSuppressionController(
GestureEventQueue* geq,
const TapSuppressionController::Config& config);
virtual ~TouchscreenTapSuppressionController();
// Should be called on arrival of GestureFlingCancel events.
void GestureFlingCancel();
// Should be called on arrival of ACK for a GestureFlingCancel event.
// |processed| is true if the GestureFlingCancel successfully stopped a fling.
void GestureFlingCancelAck(bool processed);
// Should be called on arrival of any tap-related events. Returns true if the
// caller should stop normal handling of the gesture.
bool FilterTapEvent(const GestureEventWithLatencyInfo& event);
private:
// TapSuppressionControllerClient implementation.
virtual void DropStashedTapDown() OVERRIDE;
virtual void ForwardStashedTapDown() OVERRIDE;
GestureEventQueue* gesture_event_queue_;
typedef scoped_ptr<GestureEventWithLatencyInfo> ScopedGestureEvent;
ScopedGestureEvent stashed_tap_down_;
ScopedGestureEvent stashed_show_press_;
// The core controller of tap suppression.
TapSuppressionController controller_;
DISALLOW_COPY_AND_ASSIGN(TouchscreenTapSuppressionController);
};
} // namespace content
#endif // CONTENT_BROWSER_RENDERER_HOST_INPUT_TOUCHSCREEN_TAP_SUPPRESSION_CONTROLLER_H_
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