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| 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 Gestures* ProcessTouchEventForGesture( |
| 21 const TouchEvent& event, |
| 22 ui::EventResult result, |
| 23 GestureConsumer* consumer) OVERRIDE { |
| 24 return NULL; |
| 25 } |
| 26 virtual bool CleanupStateForConsumer(GestureConsumer* consumer) OVERRIDE { |
| 27 return false; |
| 28 } |
| 29 virtual GestureConsumer* GetTouchLockedTarget( |
| 30 const TouchEvent& event) OVERRIDE { |
| 31 return NULL; |
| 32 } |
| 33 virtual GestureConsumer* GetTargetForGestureEvent( |
| 34 const GestureEvent& event) OVERRIDE { |
| 35 return NULL; |
| 36 } |
| 37 virtual GestureConsumer* GetTargetForLocation(const gfx::PointF& location, |
| 38 int source_device_id) OVERRIDE { |
| 39 return NULL; |
| 40 } |
| 41 virtual void TransferEventsTo(GestureConsumer* current_consumer, |
| 42 GestureConsumer* new_consumer) OVERRIDE {} |
| 43 virtual bool GetLastTouchPointForTarget(GestureConsumer* consumer, |
| 44 gfx::PointF* point) OVERRIDE { |
| 45 return false; |
| 46 } |
| 47 virtual bool CancelActiveTouches(GestureConsumer* consumer) OVERRIDE { |
| 48 return false; |
| 49 } |
| 50 virtual void AddGestureEventHelper(GestureEventHelper* helper) OVERRIDE {} |
| 51 virtual void RemoveGestureEventHelper(GestureEventHelper* helper) OVERRIDE {} |
| 52 |
| 53 DISALLOW_COPY_AND_ASSIGN(GestureRecognizerImplMac); |
| 54 }; |
| 55 |
| 56 } // namespace |
| 57 |
| 58 // static |
| 59 GestureRecognizer* GestureRecognizer::Get() { |
| 60 CR_DEFINE_STATIC_LOCAL(GestureRecognizerImplMac, instance, ()); |
| 61 return &instance; |
| 62 } |
| 63 |
| 64 } // namespace ui |
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