virtual void EnableAccessibility() OVERRIDE;
virtual void DisableAccessibility() OVERRIDE;
+ virtual void ResetAccessibilityMode() OVERRIDE;
virtual void OnScreenReaderDetected() OVERRIDE;
virtual bool IsAccessibleBrowser() OVERRIDE;
virtual void AddHistogramCallback(base::Closure callback) OVERRIDE;
virtual void UpdateHistogramsForTesting() OVERRIDE;
AccessibilityMode accessibility_mode() const { return accessibility_mode_; };
- void SetAccessibilityMode(AccessibilityMode mode);
+
+ // Adds the given accessibility mode to the current accessibility mode bitmap.
+ void AddAccessibilityMode(AccessibilityMode mode);
+
+ // Removes the given accessibility mode from the current accessibility mode
+ // bitmap, managing the bits that are shared with other modes such that a
+ // bit will only be turned off when all modes that depend on it have been
+ // removed.
+ void RemoveAccessibilityMode(AccessibilityMode mode);
private:
friend class base::RefCountedThreadSafe<BrowserAccessibilityStateImpl>;
friend struct DefaultSingletonTraits<BrowserAccessibilityStateImpl>;
+ // Resets accessibility_mode_ to the default value.
+ void ResetAccessibilityModeValue();
+
// Called a short while after startup to allow time for the accessibility
// state to be determined. Updates histograms with the current state.
void UpdateHistograms();
void UpdatePlatformSpecificHistograms();
+ // Updates the accessibility mode of all render widgets, including swapped out
+ // ones. |add| specifies whether the mode should be added or removed.
+ void AddOrRemoveFromRenderWidgets(AccessibilityMode mode, bool add);
+
AccessibilityMode accessibility_mode_;
std::vector<base::Closure> histogram_callbacks_;