content/common/view_message_enums.h

   1 // Copyright (c) 2012 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_VIEW_MESSAGES_ENUMS_H_
   6 #define CONTENT_COMMON_VIEW_MESSAGES_ENUMS_H_
   7
   8 #include "ipc/ipc_message_macros.h"
   9
  10 // Values that may be OR'd together to form the 'flags' parameter of a
  11 // ViewHostMsg_UpdateRect_Params structure.
  12 struct ViewHostMsg_UpdateRect_Flags {
  13   enum {
  14     IS_RESIZE_ACK = 1 << 0,
  15     IS_REPAINT_ACK = 1 << 2,
  16   };
  17   static bool is_resize_ack(int flags) {
  18     return (flags & IS_RESIZE_ACK) != 0;
  19   }
  20   static bool is_repaint_ack(int flags) {
  21     return (flags & IS_REPAINT_ACK) != 0;
  22   }
  23 };
  24
  25 // Note: keep enums in content/browser/resources/accessibility/accessibility.js
  26 // in sync with these two enums.
  27 enum AccessibilityModeFlag {
  28   // Accessibility updates are processed to create platform trees and events are
  29   // passed to platform APIs in the browser.
  30   AccessibilityModeFlagPlatform = 1 << 0,
  31
  32   // Accessibility is on, and the full tree is computed. If this flag is off,
  33   // only limited information about editable text nodes is sent to the browser
  34   // process. Useful for implementing limited UIA on tablets.
  35   AccessibilityModeFlagFullTree = 1 << 1,
  36 };
  37
  38 enum AccessibilityMode {
  39   // All accessibility is off.
  40   AccessibilityModeOff = 0,
  41
  42   // Renderer accessibility is on, platform APIs are called, but only limited
  43   // information is available (see AccessibilityModeFlagEditableTextOnly).
  44   AccessibilityModeEditableTextOnly = AccessibilityModeFlagPlatform,
  45
  46   // Renderer accessibility is on, and platform APIs are called.
  47   AccessibilityModeComplete =
  48       AccessibilityModeFlagPlatform | AccessibilityModeFlagFullTree,
  49
  50   // Renderer accessibility is on, and events are passed to any extensions
  51   // requesting automation, but not to platform accessibility.
  52   AccessibilityModeTreeOnly = AccessibilityModeFlagFullTree,
  53 };
  54
  55 #endif  // CONTENT_COMMON_VIEW_MESSAGES_ENUMS_H_