| // Copyright (c) 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 UI_BASE_WIN_ACCESSIBILITY_IDS_WIN_H_ |
| #define UI_BASE_WIN_ACCESSIBILITY_IDS_WIN_H_ |
| |
| #include <limits.h> |
| |
| namespace base { |
| namespace win { |
| |
| // Windows accessibility (MSAA) notifications are posted on an |
| // accessible object using its owning HWND and a long integer child id. |
| // Positive child ids can be used to enumerate the children of an object, |
| // so in Chromium we use only negative values to represent ids of specific |
| // accessible objects. |
| // |
| // Chromium currently has two separate systems that use accessibility ids: |
| // * views (ui/views/accessibility), and |
| // * web (content/browser/accessibility) |
| // |
| // These constants ensure they use non-overlapping id ranges. |
| |
| const long kFirstViewsAccessibilityId = -1; |
| const long kLastViewsAccessibilityId = -999; |
| const long kFirstBrowserAccessibilityManagerAccessibilityId = -1000; |
| const long kLastBrowserAccessibilityManagerAccessibilityId = INT_MIN; |
| |
| } // win |
| } // base |
| |
| #endif // UI_BASE_WIN_ACCESSIBILITY_IDS_WIN_H_ |
