chromeos: Move files in //ash/common to //ash, part 3

ash/common/accessibility_delegate.h

-// Copyright 2013 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_COMMON_ACCESSIBILITY_DELEGATE_H_
-#define ASH_COMMON_ACCESSIBILITY_DELEGATE_H_
-
-#include "ash/ash_export.h"
-#include "ash/common/accessibility_types.h"
-#include "base/time/time.h"
-#include "ui/accessibility/ax_enums.h"
-
-namespace ash {
-
-// A delegate class to control and query accessibility features.
-class ASH_EXPORT AccessibilityDelegate {
- public:
-  virtual ~AccessibilityDelegate() {}
-
-  // Invoked to toggle spoken feedback for accessibility
-  virtual void ToggleSpokenFeedback(
-      AccessibilityNotificationVisibility notify) = 0;
-
-  // Returns true if spoken feedback is enabled.
-  virtual bool IsSpokenFeedbackEnabled() const = 0;
-
-  // Invoked to toggle high contrast mode for accessibility.
-  virtual void ToggleHighContrast() = 0;
-
-  // Returns true if high contrast mode is enabled.
-  virtual bool IsHighContrastEnabled() const = 0;
-
-  // Invoked to enable the screen magnifier.
-  virtual void SetMagnifierEnabled(bool enabled) = 0;
-
-  // Invoked to change the type of the screen magnifier.
-  virtual void SetMagnifierType(MagnifierType type) = 0;
-
-  // Returns true if the screen magnifier is enabled.
-  virtual bool IsMagnifierEnabled() const = 0;
-
-  // Returns the current screen magnifier mode.
-  virtual MagnifierType GetMagnifierType() const = 0;
-
-  // Invoked to enable Large Cursor.
-  virtual void SetLargeCursorEnabled(bool enabled) = 0;
-
-  // Returns true if Large Cursor is enabled.
-  virtual bool IsLargeCursorEnabled() const = 0;
-
-  // Invoked to enable autoclick.
-  virtual void SetAutoclickEnabled(bool enabled) = 0;
-
-  // Returns if autoclick is enabled or not.
-  virtual bool IsAutoclickEnabled() const = 0;
-
-  // Invoked to enable or disable the a11y on-screen keyboard.
-  virtual void SetVirtualKeyboardEnabled(bool enabled) = 0;
-
-  // Returns if the a11y virtual keyboard is enabled.
-  virtual bool IsVirtualKeyboardEnabled() const = 0;
-
-  // Invoked to enable or disable the mono audio output.
-  virtual void SetMonoAudioEnabled(bool enabled) = 0;
-
-  // Returns if the mono audio output is enabled.
-  virtual bool IsMonoAudioEnabled() const = 0;
-
-  // Invoked to enable or disable caret highlighting.
-  virtual void SetCaretHighlightEnabled(bool enabled) = 0;
-
-  // Returns if caret highlighting is enabled.
-  virtual bool IsCaretHighlightEnabled() const = 0;
-
-  // Invoked to enable or disable cursor highlighting.
-  virtual void SetCursorHighlightEnabled(bool enabled) = 0;
-
-  // Returns if cursor highlighting is enabled.
-  virtual bool IsCursorHighlightEnabled() const = 0;
-
-  // Invoked to enable or disable focus highlighting.
-  virtual void SetFocusHighlightEnabled(bool enabled) = 0;
-
-  // Returns if focus highlighting is enabled.
-  virtual bool IsFocusHighlightEnabled() const = 0;
-
-  // Invoked to enable or disable select-to-speak.
-  virtual void SetSelectToSpeakEnabled(bool enabled) = 0;
-
-  // Returns if select-to-speak is enabled.
-  virtual bool IsSelectToSpeakEnabled() const = 0;
-
-  // Invoked to enable or disable switch access.
-  virtual void SetSwitchAccessEnabled(bool enabled) = 0;
-
-  // Returns if switch access is enabled.
-  virtual bool IsSwitchAccessEnabled() const = 0;
-
-  // Returns true when the accessibility menu should be shown.
-  virtual bool ShouldShowAccessibilityMenu() const = 0;
-
-  // Returns true if a braille display is connected to the system.
-  virtual bool IsBrailleDisplayConnected() const = 0;
-
-  // Cancel all current and queued speech immediately.
-  virtual void SilenceSpokenFeedback() const = 0;
-
-  // Clear the focus highlight
-  virtual void ClearFocusHighlight() const = 0;
-
-  // Saves the zoom scale of the full screen magnifier.
-  virtual void SaveScreenMagnifierScale(double scale) = 0;
-
-  // Gets a saved value of the zoom scale of full screen magnifier. If a value
-  // is not saved, return a negative value.
-  virtual double GetSavedScreenMagnifierScale() = 0;
-
-  // Triggers an accessibility alert to give the user feedback.
-  virtual void TriggerAccessibilityAlert(AccessibilityAlert alert) = 0;
-
-  // Gets the last accessibility alert that was triggered.
-  virtual AccessibilityAlert GetLastAccessibilityAlert() = 0;
-
-  // Whether or not to enable toggling spoken feedback via holding down
-  // two fingers on the screen.
-  virtual bool ShouldToggleSpokenFeedbackViaTouch() = 0;
-
-  // Play tick sound indicating spoken feedback will be toggled after countdown.
-  virtual void PlaySpokenFeedbackToggleCountdown(int tick_count) = 0;
-
-  // Plays an earcon. Earcons are brief and distinctive sounds that indicate
-  // when their mapped event has occurred. The sound key enums can be found in
-  // chromeos/audio/chromeos_sounds.h.
-  virtual void PlayEarcon(int sound_key) = 0;
-
-  // Initiates play of shutdown sound and returns it's duration.
-  virtual base::TimeDelta PlayShutdownSound() const = 0;
-
-  // Forward an accessibility gesture from the touch exploration controller to
-  // ChromeVox.
-  virtual void HandleAccessibilityGesture(ui::AXGesture gesture) = 0;
-};
-
-}  // namespace ash
-
-#endif  // ASH_COMMON_ACCESSIBILITY_DELEGATE_H_