content/common/accessibility_mode_enums.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_COMMON_ACCESSIBILITY_MODE_ENUMS_H_
   6 #define CONTENT_COMMON_ACCESSIBILITY_MODE_ENUMS_H_
   7
   8 // Note: keep enums in content/browser/resources/accessibility/accessibility.js
   9 // in sync with these two enums.
  10 enum AccessibilityModeFlag {
  11   // Accessibility updates are processed to create platform trees and events are
  12   // passed to platform APIs in the browser.
  13   AccessibilityModeFlagPlatform = 1 << 0,
  14
  15   // Accessibility is on, and the full tree is computed. If this flag is off,
  16   // only limited information about editable text nodes is sent to the browser
  17   // process. Useful for implementing limited UIA on tablets.
  18   AccessibilityModeFlagFullTree = 1 << 1,
  19 };
  20
  21 enum AccessibilityMode {
  22   // All accessibility is off.
  23   AccessibilityModeOff = 0,
  24
  25   // Renderer accessibility is on, platform APIs are called, but only limited
  26   // information is available (see AccessibilityModeFlagEditableTextOnly).
  27   AccessibilityModeEditableTextOnly = AccessibilityModeFlagPlatform,
  28
  29   // Renderer accessibility is on, and platform APIs are called.
  30   AccessibilityModeComplete =
  31       AccessibilityModeFlagPlatform | AccessibilityModeFlagFullTree,
  32
  33   // Renderer accessibility is on, and events are passed to any extensions
  34   // requesting automation, but not to platform accessibility.
  35   AccessibilityModeTreeOnly = AccessibilityModeFlagFullTree,
  36 };
  37
  38 #endif  // CONTENT_COMMON_ACCESSIBILITY_MODE_ENUMS_H_