| // Copyright 2022 The Chromium Authors |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef UI_ACCESSIBILITY_AX_TREE_UPDATE_UTIL_H_ |
| #define UI_ACCESSIBILITY_AX_TREE_UPDATE_UTIL_H_ |
| |
| #include <vector> |
| |
| #include "ui/accessibility/ax_export.h" |
| #include "ui/accessibility/ax_tree_update_forward.h" |
| |
| namespace ui { |
| |
| AX_EXPORT bool AXTreeUpdatesCanBeMerged(const AXTreeUpdate& u1, |
| const AXTreeUpdate& u2); |
| |
| // If 2 or more tree updates can all be merged into others, |
| // process the whole set of tree updates, copying them to |dst|, |
| // and returning true. Otherwise, return false and |dst| |
| // is left unchanged. |
| // |
| // Merging tree updates helps minimize the overhead of calling |
| // Unserialize multiple times. |
| AX_EXPORT bool MergeAXTreeUpdates(std::vector<AXTreeUpdate>& src, |
| std::vector<AXTreeUpdate>* dst); |
| |
| } // namespace ui |
| |
| #endif // UI_ACCESSIBILITY_AX_TREE_UPDATE_UTIL_H_ |
