content/browser/accessibility/accessibility_mode_helper.h

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef CONTENT_BROWSER_ACCESSIBILITY_ACCESSIBILITY_MODE_HELPER_H_
   6 #define CONTENT_BROWSER_ACCESSIBILITY_ACCESSIBILITY_MODE_HELPER_H_
   7
   8 #include "content/common/accessibility_mode_enums.h"
   9 #include "content/common/content_export.h"
  10
  11 namespace content {
  12
  13 // Returns base accessibility mode constant, depends on OS version.
  14 CONTENT_EXPORT AccessibilityMode GetBaseAccessibilityMode();
  15
  16 // Adds the given accessibility mode constant to the given accessibility mode
  17 // bitmap.
  18 CONTENT_EXPORT AccessibilityMode
  19     AddAccessibilityModeTo(AccessibilityMode to, AccessibilityMode mode_to_add);
  20
  21 // Removes the given accessibility mode constant from the given accessibility
  22 // mode bitmap, managing the bits that are shared with other modes such that a
  23 // bit will only be turned off when all modes that depend on it have been
  24 // removed.
  25 CONTENT_EXPORT AccessibilityMode
  26     RemoveAccessibilityModeFrom(AccessibilityMode to,
  27                                 AccessibilityMode mode_to_remove);
  28
  29 } //  namespace content
  30
  31 #endif  // CONTENT_BROWSER_ACCESSIBILITY_ACCESSIBILITY_MODE_HELPER_H_