| // 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_ |