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- // 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"
- 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_
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