| // 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_ACCESSIBILITY_ACCESSIBILITY_DELEGATE_H_ |
| #define ASH_ACCESSIBILITY_ACCESSIBILITY_DELEGATE_H_ |
| |
| #include "ash/ash_export.h" |
| #include "base/time/time.h" |
| #include "ui/accessibility/ax_enums.mojom.h" |
| |
| namespace ash { |
| |
| // A delegate class to control and query accessibility features. |
| // |
| // NOTE: Methods in this class are migrating to AccessibilityController to |
| // support mash (because ash is in a separate process and cannot call back into |
| // chrome). Add new methods there, not here. |
| class ASH_EXPORT AccessibilityDelegate { |
| public: |
| virtual ~AccessibilityDelegate() {} |
| |
| // Invoked to enable the screen magnifier. |
| virtual void SetMagnifierEnabled(bool enabled) = 0; |
| |
| // Returns true if the screen magnifier is enabled. |
| virtual bool IsMagnifierEnabled() const = 0; |
| |
| // Returns true when the accessibility menu should be shown. |
| virtual bool ShouldShowAccessibilityMenu() 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; |
| |
| // NOTE: Prefer adding methods to AccessibilityController, see class comment. |
| }; |
| |
| } // namespace ash |
| |
| #endif // ASH_ACCESSIBILITY_ACCESSIBILITY_DELEGATE_H_ |