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1 // Copyright 2013 The Chromium Authors. All rights reserved. | 1 // Copyright 2013 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #ifndef UI_ACCESSIBILITY_AX_TREE_H_ | 5 #ifndef UI_ACCESSIBILITY_AX_TREE_H_ |
6 #define UI_ACCESSIBILITY_AX_TREE_H_ | 6 #define UI_ACCESSIBILITY_AX_TREE_H_ |
7 | 7 |
8 #include <set> | 8 #include <set> |
9 | 9 |
10 #include "base/containers/hash_tables.h" | 10 #include "base/containers/hash_tables.h" |
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113 private: | 113 private: |
114 AXNode* CreateNode(AXNode* parent, int32 id, int32 index_in_parent); | 114 AXNode* CreateNode(AXNode* parent, int32 id, int32 index_in_parent); |
115 | 115 |
116 // This is called from within Unserialize(), it returns true on success. | 116 // This is called from within Unserialize(), it returns true on success. |
117 bool UpdateNode(const AXNodeData& src, AXTreeUpdateState* update_state); | 117 bool UpdateNode(const AXNodeData& src, AXTreeUpdateState* update_state); |
118 | 118 |
119 void OnRootChanged(); | 119 void OnRootChanged(); |
120 | 120 |
121 // Notify the delegate that the subtree rooted at |node| will be destroyed, | 121 // Notify the delegate that the subtree rooted at |node| will be destroyed, |
122 // then call DestroyNodeAndSubtree on it. | 122 // then call DestroyNodeAndSubtree on it. |
123 void DestroySubtree(AXNode* node); | 123 void DestroySubtree(AXNode* node, AXTreeUpdateState* update_state); |
124 | 124 |
125 // Call Destroy() on |node|, and delete it from the id map, and then | 125 // Call Destroy() on |node|, and delete it from the id map, and then |
126 // call recursively on all nodes in its subtree. | 126 // call recursively on all nodes in its subtree. |
127 void DestroyNodeAndSubtree(AXNode* node); | 127 void DestroyNodeAndSubtree(AXNode* node, AXTreeUpdateState* update_state); |
128 | 128 |
129 // Iterate over the children of |node| and for each child, destroy the | 129 // Iterate over the children of |node| and for each child, destroy the |
130 // child and its subtree if its id is not in |new_child_ids|. Returns | 130 // child and its subtree if its id is not in |new_child_ids|. Returns |
131 // true on success, false on fatal error. | 131 // true on success, false on fatal error. |
132 bool DeleteOldChildren(AXNode* node, | 132 bool DeleteOldChildren(AXNode* node, |
133 const std::vector<int32>& new_child_ids); | 133 const std::vector<int32>& new_child_ids, |
| 134 AXTreeUpdateState* update_state); |
134 | 135 |
135 // Iterate over |new_child_ids| and populate |new_children| with | 136 // Iterate over |new_child_ids| and populate |new_children| with |
136 // pointers to child nodes, reusing existing nodes already in the tree | 137 // pointers to child nodes, reusing existing nodes already in the tree |
137 // if they exist, and creating otherwise. Reparenting is disallowed, so | 138 // if they exist, and creating otherwise. Reparenting is disallowed, so |
138 // if the id already exists as the child of another node, that's an | 139 // if the id already exists as the child of another node, that's an |
139 // error. Returns true on success, false on fatal error. | 140 // error. Returns true on success, false on fatal error. |
140 bool CreateNewChildVector(AXNode* node, | 141 bool CreateNewChildVector(AXNode* node, |
141 const std::vector<int32>& new_child_ids, | 142 const std::vector<int32>& new_child_ids, |
142 std::vector<AXNode*>* new_children, | 143 std::vector<AXNode*>* new_children, |
143 AXTreeUpdateState* update_state); | 144 AXTreeUpdateState* update_state); |
144 | 145 |
145 AXTreeDelegate* delegate_; | 146 AXTreeDelegate* delegate_; |
146 AXNode* root_; | 147 AXNode* root_; |
147 base::hash_map<int32, AXNode*> id_map_; | 148 base::hash_map<int32, AXNode*> id_map_; |
148 std::string error_; | 149 std::string error_; |
149 }; | 150 }; |
150 | 151 |
151 } // namespace ui | 152 } // namespace ui |
152 | 153 |
153 #endif // UI_ACCESSIBILITY_AX_TREE_H_ | 154 #endif // UI_ACCESSIBILITY_AX_TREE_H_ |
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