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1 // Copyright 2013 The Chromium Authors. All rights reserved. | 1 // Copyright 2013 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_COMMON_ACCESSIBILITY_DELEGATE_H_ | 5 #ifndef ASH_COMMON_ACCESSIBILITY_DELEGATE_H_ |
6 #define ASH_COMMON_ACCESSIBILITY_DELEGATE_H_ | 6 #define ASH_COMMON_ACCESSIBILITY_DELEGATE_H_ |
7 | 7 |
8 #include "ash/ash_export.h" | 8 #include "ash/ash_export.h" |
9 #include "ash/common/accessibility_types.h" | 9 #include "ash/common/accessibility_types.h" |
10 #include "base/time/time.h" | 10 #include "base/time/time.h" |
11 #include "ui/accessibility/ax_enums.h" | 11 #include "ui/accessibility/ax_enums.h" |
12 | 12 |
13 namespace ash { | 13 namespace ash { |
14 | 14 |
15 // A delegate class to control and query accessibility features. | 15 // A delegate class to control and query accessibility features. |
16 class ASH_EXPORT AccessibilityDelegate { | 16 class ASH_EXPORT AccessibilityDelegate { |
17 public: | 17 public: |
18 virtual ~AccessibilityDelegate() {} | 18 virtual ~AccessibilityDelegate() {} |
19 | 19 |
20 // Invoked to toggle spoken feedback for accessibility | 20 // Invoked to toggle spoken feedback for accessibility |
21 virtual void ToggleSpokenFeedback( | 21 virtual void ToggleSpokenFeedback( |
22 ui::AccessibilityNotificationVisibility notify) = 0; | 22 AccessibilityNotificationVisibility notify) = 0; |
23 | 23 |
24 // Returns true if spoken feedback is enabled. | 24 // Returns true if spoken feedback is enabled. |
25 virtual bool IsSpokenFeedbackEnabled() const = 0; | 25 virtual bool IsSpokenFeedbackEnabled() const = 0; |
26 | 26 |
27 // Invoked to toggle high contrast mode for accessibility. | 27 // Invoked to toggle high contrast mode for accessibility. |
28 virtual void ToggleHighContrast() = 0; | 28 virtual void ToggleHighContrast() = 0; |
29 | 29 |
30 // Returns true if high contrast mode is enabled. | 30 // Returns true if high contrast mode is enabled. |
31 virtual bool IsHighContrastEnabled() const = 0; | 31 virtual bool IsHighContrastEnabled() const = 0; |
32 | 32 |
33 // Invoked to enable the screen magnifier. | 33 // Invoked to enable the screen magnifier. |
34 virtual void SetMagnifierEnabled(bool enabled) = 0; | 34 virtual void SetMagnifierEnabled(bool enabled) = 0; |
35 | 35 |
36 // Invoked to change the type of the screen magnifier. | 36 // Invoked to change the type of the screen magnifier. |
37 virtual void SetMagnifierType(ui::MagnifierType type) = 0; | 37 virtual void SetMagnifierType(MagnifierType type) = 0; |
38 | 38 |
39 // Returns true if the screen magnifier is enabled. | 39 // Returns true if the screen magnifier is enabled. |
40 virtual bool IsMagnifierEnabled() const = 0; | 40 virtual bool IsMagnifierEnabled() const = 0; |
41 | 41 |
42 // Returns the current screen magnifier mode. | 42 // Returns the current screen magnifier mode. |
43 virtual ui::MagnifierType GetMagnifierType() const = 0; | 43 virtual MagnifierType GetMagnifierType() const = 0; |
44 | 44 |
45 // Invoked to enable Large Cursor. | 45 // Invoked to enable Large Cursor. |
46 virtual void SetLargeCursorEnabled(bool enabled) = 0; | 46 virtual void SetLargeCursorEnabled(bool enabled) = 0; |
47 | 47 |
48 // Returns true if Large Cursor is enabled. | 48 // Returns true if Large Cursor is enabled. |
49 virtual bool IsLargeCursorEnabled() const = 0; | 49 virtual bool IsLargeCursorEnabled() const = 0; |
50 | 50 |
51 // Invoked to enable autoclick. | 51 // Invoked to enable autoclick. |
52 virtual void SetAutoclickEnabled(bool enabled) = 0; | 52 virtual void SetAutoclickEnabled(bool enabled) = 0; |
53 | 53 |
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106 virtual void SilenceSpokenFeedback() const = 0; | 106 virtual void SilenceSpokenFeedback() const = 0; |
107 | 107 |
108 // Saves the zoom scale of the full screen magnifier. | 108 // Saves the zoom scale of the full screen magnifier. |
109 virtual void SaveScreenMagnifierScale(double scale) = 0; | 109 virtual void SaveScreenMagnifierScale(double scale) = 0; |
110 | 110 |
111 // Gets a saved value of the zoom scale of full screen magnifier. If a value | 111 // Gets a saved value of the zoom scale of full screen magnifier. If a value |
112 // is not saved, return a negative value. | 112 // is not saved, return a negative value. |
113 virtual double GetSavedScreenMagnifierScale() = 0; | 113 virtual double GetSavedScreenMagnifierScale() = 0; |
114 | 114 |
115 // Triggers an accessibility alert to give the user feedback. | 115 // Triggers an accessibility alert to give the user feedback. |
116 virtual void TriggerAccessibilityAlert(ui::AccessibilityAlert alert) = 0; | 116 virtual void TriggerAccessibilityAlert(AccessibilityAlert alert) = 0; |
117 | 117 |
118 // Gets the last accessibility alert that was triggered. | 118 // Gets the last accessibility alert that was triggered. |
119 virtual ui::AccessibilityAlert GetLastAccessibilityAlert() = 0; | 119 virtual AccessibilityAlert GetLastAccessibilityAlert() = 0; |
120 | 120 |
121 // Plays an earcon. Earcons are brief and distinctive sounds that indicate | 121 // Plays an earcon. Earcons are brief and distinctive sounds that indicate |
122 // when their mapped event has occurred. The sound key enums can be found in | 122 // when their mapped event has occurred. The sound key enums can be found in |
123 // chromeos/audio/chromeos_sounds.h. | 123 // chromeos/audio/chromeos_sounds.h. |
124 virtual void PlayEarcon(int sound_key) = 0; | 124 virtual void PlayEarcon(int sound_key) = 0; |
125 | 125 |
126 // Initiates play of shutdown sound and returns it's duration. | 126 // Initiates play of shutdown sound and returns it's duration. |
127 virtual base::TimeDelta PlayShutdownSound() const = 0; | 127 virtual base::TimeDelta PlayShutdownSound() const = 0; |
128 | 128 |
129 // Forward an accessibility gesture from the touch exploration controller to | 129 // Forward an accessibility gesture from the touch exploration controller to |
130 // ChromeVox. | 130 // ChromeVox. |
131 virtual void HandleAccessibilityGesture(ui::AXGesture gesture) = 0; | 131 virtual void HandleAccessibilityGesture(ui::AXGesture gesture) = 0; |
132 }; | 132 }; |
133 | 133 |
134 } // namespace ash | 134 } // namespace ash |
135 | 135 |
136 #endif // ASH_COMMON_ACCESSIBILITY_DELEGATE_H_ | 136 #endif // ASH_COMMON_ACCESSIBILITY_DELEGATE_H_ |
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