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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_TOUCHPAD_TAP_SUPPRESSION_CONTROLLER_H_
#define CONTENT_BROWSER_RENDERER_HOST_INPUT_TOUCHPAD_TAP_SUPPRESSION_CONTROLLER_H_
#include "content/browser/renderer_host/event_with_latency_info.h"
#include "content/browser/renderer_host/input/tap_suppression_controller.h"
#include "content/browser/renderer_host/input/tap_suppression_controller_client.h"
#include "content/common/content_export.h"
#include "third_party/WebKit/public/web/WebInputEvent.h"
namespace content {
class TapSuppressionController;
class CONTENT_EXPORT TouchpadTapSuppressionControllerClient {
public:
virtual ~TouchpadTapSuppressionControllerClient() {}
virtual void SendMouseEventImmediately(
const MouseEventWithLatencyInfo& event) = 0;
};
// Controls the suppression of touchpad taps immediately following the dispatch
// of a GestureFlingCancel event.
class TouchpadTapSuppressionController : public TapSuppressionControllerClient {
public:
// The |client| must outlive the TouchpadTapSupressionController.
TouchpadTapSuppressionController(
TouchpadTapSuppressionControllerClient* client,
const TapSuppressionController::Config& config);
~TouchpadTapSuppressionController() override;
// 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 MouseDown events. Returns true if the caller
// should stop normal handling of the MouseDown. In this case, the caller is
// responsible for saving the event for later use, if needed.
bool ShouldDeferMouseDown(const MouseEventWithLatencyInfo& event);
// Should be called on arrival of MouseUp events. Returns true if the caller
// should stop normal handling of the MouseUp.
bool ShouldSuppressMouseUp();
private:
friend class MockRenderWidgetHost;
// TapSuppressionControllerClient implementation.
void DropStashedTapDown() override;
void ForwardStashedTapDown() override;
TouchpadTapSuppressionControllerClient* client_;
MouseEventWithLatencyInfo stashed_mouse_down_;
// The core controller of tap suppression.
TapSuppressionController controller_;
DISALLOW_COPY_AND_ASSIGN(TouchpadTapSuppressionController);
};
} // namespace content
#endif // CONTENT_BROWSER_RENDERER_HOST_INPUT_TOUCHPAD_TAP_SUPPRESSION_CONTROLLER_H_
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