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| 1 // Copyright 2014 The Chromium Authors. All rights reserved. | 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 | 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
| 4 | 4 |
| 5 #ifndef ASH_ACCELERATOR_KEY_HOLD_DETECTOR_H_ | 5 #ifndef ASH_ACCELERATOR_KEY_HOLD_DETECTOR_H_ |
| 6 #define ASH_ACCELERATOR_KEY_HOLD_DETECTOR_H_ | 6 #define ASH_ACCELERATOR_KEY_HOLD_DETECTOR_H_ |
| 7 | 7 |
| 8 #include <memory> | 8 #include <memory> |
| 9 | 9 |
| 10 #include "ash/ash_export.h" | 10 #include "ash/ash_export.h" |
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| 52 private: | 52 private: |
| 53 // A state to keep track of one click and click and hold operation. | 53 // A state to keep track of one click and click and hold operation. |
| 54 // | 54 // |
| 55 // One click: | 55 // One click: |
| 56 // INITIAL --(first press)--> PRESSED --(release)--> INITIAL[SEND PRESS] | 56 // INITIAL --(first press)--> PRESSED --(release)--> INITIAL[SEND PRESS] |
| 57 // | 57 // |
| 58 // Click and hold: | 58 // Click and hold: |
| 59 // INITIAL --(first press)--> PRESSED --(press)--> | 59 // INITIAL --(first press)--> PRESSED --(press)--> |
| 60 // HOLD[OnKeyHold] --(press)--> HOLD[OnKeyHold] --(release)--> | 60 // HOLD[OnKeyHold] --(press)--> HOLD[OnKeyHold] --(release)--> |
| 61 // INITIAL[OnKeyUnhold] | 61 // INITIAL[OnKeyUnhold] |
| 62 enum State { | 62 enum State { INITIAL, PRESSED, HOLD }; |
| 63 INITIAL, | |
| 64 PRESSED, | |
| 65 HOLD | |
| 66 }; | |
| 67 | 63 |
| 68 State state_; | 64 State state_; |
| 69 std::unique_ptr<Delegate> delegate_; | 65 std::unique_ptr<Delegate> delegate_; |
| 70 | 66 |
| 71 DISALLOW_COPY_AND_ASSIGN(KeyHoldDetector); | 67 DISALLOW_COPY_AND_ASSIGN(KeyHoldDetector); |
| 72 }; | 68 }; |
| 73 | 69 |
| 74 } // namespace ash | 70 } // namespace ash |
| 75 | 71 |
| 76 #endif // ASH_ACCELERATOR_KEY_HOLD_DETECTOR_H_ | 72 #endif // ASH_ACCELERATOR_KEY_HOLD_DETECTOR_H_ |
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