1 // Copyright 2013 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #ifndef CONTENT_BROWSER_RENDERER_HOST_INPUT_TOUCHPAD_TAP_SUPPRESSION_CONTROLLER_H_ 6 #define CONTENT_BROWSER_RENDERER_HOST_INPUT_TOUCHPAD_TAP_SUPPRESSION_CONTROLLER_H_ 7 8 #include "base/memory/scoped_ptr.h" 9 #include "content/browser/renderer_host/input/tap_suppression_controller_client.h" 10 #include "content/port/browser/event_with_latency_info.h" 11 #include "third_party/WebKit/public/web/WebInputEvent.h" 12 13 namespace content { 14 15 class InputRouter; 16 class TapSuppressionController; 17 18 // Controls the suppression of touchpad taps immediately following the dispatch 19 // of a GestureFlingCancel event. 20 class TouchpadTapSuppressionController : public TapSuppressionControllerClient { 21 public: 22 // The |input_router| must outlive the TouchpadTapSupressionController. 23 explicit TouchpadTapSuppressionController(InputRouter* input_router); 24 virtual ~TouchpadTapSuppressionController(); 25 26 // Should be called on arrival of GestureFlingCancel events. 27 void GestureFlingCancel(); 28 29 // Should be called on arrival of ACK for a GestureFlingCancel event. 30 // |processed| is true if the GestureFlingCancel successfully stopped a fling. 31 void GestureFlingCancelAck(bool processed); 32 33 // Should be called on arrival of MouseDown events. Returns true if the caller 34 // should stop normal handling of the MouseDown. In this case, the caller is 35 // responsible for saving the event for later use, if needed. 36 bool ShouldDeferMouseDown(const MouseEventWithLatencyInfo& event); 37 38 // Should be called on arrival of MouseUp events. Returns true if the caller 39 // should stop normal handling of the MouseUp. 40 bool ShouldSuppressMouseUp(); 41 42 private: 43 friend class MockRenderWidgetHost; 44 45 // TapSuppressionControllerClient implementation. 46 virtual int MaxCancelToDownTimeInMs() OVERRIDE; 47 virtual int MaxTapGapTimeInMs() OVERRIDE; 48 virtual void DropStashedTapDown() OVERRIDE; 49 virtual void ForwardStashedTapDownForDeferral() OVERRIDE; 50 virtual void ForwardStashedTapDownSkipDeferral() OVERRIDE; 51 52 InputRouter* input_router_; 53 MouseEventWithLatencyInfo stashed_mouse_down_; 54 55 // The core controller of tap suppression. 56 scoped_ptr<TapSuppressionController> controller_; 57 58 DISALLOW_COPY_AND_ASSIGN(TouchpadTapSuppressionController); 59 }; 60 61 } // namespace content 62 63 #endif // CONTENT_BROWSER_RENDERER_HOST_INPUT_TOUCHPAD_TAP_SUPPRESSION_CONTROLLER_H_ 64
