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Side by Side Diff: content/browser/renderer_host/touchpad_tap_suppression_controller.h

Issue 20007002: Move more input-related files to renderer_host/input (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: Proper .gypi alpha ordering Created 7 years, 4 months ago
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1 // Copyright (c) 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_TOUCHPAD_TAP_SUPPRESSION_CONTROLLER_H_
6 #define CONTENT_BROWSER_RENDERER_HOST_TOUCHPAD_TAP_SUPPRESSION_CONTROLLER_H_
7
8 #include "base/memory/scoped_ptr.h"
9 #include "content/browser/renderer_host/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_TOUCHPAD_TAP_SUPPRESSION_CONTROLLER_H_
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