Upstream version 9.38.198.0
[platform/framework/web/crosswalk.git] / src / ui / events / gestures / gesture_recognizer_impl_mac.cc
1 // Copyright 2014 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 #include "base/macros.h"
6 #include "ui/events/gestures/gesture_recognizer.h"
7
8 namespace ui {
9
10 namespace {
11
12 // Stub implementation of GestureRecognizer for Mac. Currently only serves to
13 // provide a no-op implementation of TransferEventsTo().
14 class GestureRecognizerImplMac : public GestureRecognizer {
15  public:
16   GestureRecognizerImplMac() {}
17   virtual ~GestureRecognizerImplMac() {}
18
19  private:
20   virtual bool ProcessTouchEventPreDispatch(
21       const TouchEvent& event,
22       GestureConsumer* consumer) OVERRIDE {
23     return false;
24   }
25
26   virtual Gestures* ProcessTouchEventPostDispatch(
27       const TouchEvent& event,
28       ui::EventResult result,
29       GestureConsumer* consumer) OVERRIDE {
30     return NULL;
31   }
32   virtual Gestures* ProcessTouchEventOnAsyncAck(
33       const TouchEvent& event,
34       ui::EventResult result,
35       GestureConsumer* consumer) OVERRIDE {
36     return NULL;
37   };
38   virtual bool CleanupStateForConsumer(GestureConsumer* consumer) OVERRIDE {
39     return false;
40   }
41   virtual GestureConsumer* GetTouchLockedTarget(
42       const TouchEvent& event) OVERRIDE {
43     return NULL;
44   }
45   virtual GestureConsumer* GetTargetForGestureEvent(
46       const GestureEvent& event) OVERRIDE {
47     return NULL;
48   }
49   virtual GestureConsumer* GetTargetForLocation(const gfx::PointF& location,
50                                                 int source_device_id) OVERRIDE {
51     return NULL;
52   }
53   virtual void TransferEventsTo(GestureConsumer* current_consumer,
54                                 GestureConsumer* new_consumer) OVERRIDE {}
55   virtual bool GetLastTouchPointForTarget(GestureConsumer* consumer,
56                                           gfx::PointF* point) OVERRIDE {
57     return false;
58   }
59   virtual bool CancelActiveTouches(GestureConsumer* consumer) OVERRIDE {
60     return false;
61   }
62   virtual void AddGestureEventHelper(GestureEventHelper* helper) OVERRIDE {}
63   virtual void RemoveGestureEventHelper(GestureEventHelper* helper) OVERRIDE {}
64
65   DISALLOW_COPY_AND_ASSIGN(GestureRecognizerImplMac);
66 };
67
68 }  // namespace
69
70 // static
71 GestureRecognizer* GestureRecognizer::Get() {
72   CR_DEFINE_STATIC_LOCAL(GestureRecognizerImplMac, instance, ());
73   return &instance;
74 }
75
76 }  // namespace ui