| // Copyright 2018 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef ASH_ACCESSIBILITY_KEY_ACCESSIBILITY_ENABLER_H_ |
| #define ASH_ACCESSIBILITY_KEY_ACCESSIBILITY_ENABLER_H_ |
| |
| #include "ash/ash_export.h" |
| #include "base/macros.h" |
| #include "base/time/time.h" |
| #include "ui/events/event_handler.h" |
| |
| namespace ui { |
| class KeyEvent; |
| } // namespace ui |
| |
| namespace ash { |
| class SpokenFeedbackEnabler; |
| |
| // Toggles spoken feedback when the volume up and volume down keys are held for |
| // at least 5 seconds. |
| class ASH_EXPORT KeyAccessibilityEnabler : public ui::EventHandler { |
| public: |
| KeyAccessibilityEnabler(); |
| ~KeyAccessibilityEnabler() override; |
| |
| private: |
| friend class KeyAccessibilityEnablerTest; |
| |
| // Overridden from ui::EventHandler |
| void OnKeyEvent(ui::KeyEvent* event) override; |
| |
| std::unique_ptr<SpokenFeedbackEnabler> spoken_feedback_enabler_; |
| bool vol_down_pressed_ = false; |
| bool vol_up_pressed_ = false; |
| bool other_key_pressed_ = false; |
| base::TimeTicks first_time_both_volume_keys_pressed_; |
| |
| DISALLOW_COPY_AND_ASSIGN(KeyAccessibilityEnabler); |
| }; |
| |
| } // namespace ash |
| |
| #endif // ASH_ACCESSIBILITY_KEY_ACCESSIBILITY_ENABLER_H_ |