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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 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 | 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 #include "content/browser/accessibility/browser_accessibility_manager.h" | 5 #include "content/browser/accessibility/browser_accessibility_manager.h" |
6 | 6 |
7 #include "base/logging.h" | 7 #include "base/logging.h" |
8 #include "content/browser/accessibility/browser_accessibility.h" | 8 #include "content/browser/accessibility/browser_accessibility.h" |
9 #include "content/common/accessibility_messages.h" | 9 #include "content/common/accessibility_messages.h" |
10 #include "ui/accessibility/ax_tree_serializer.h" | 10 #include "ui/accessibility/ax_tree_serializer.h" |
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33 return nullptr; | 33 return nullptr; |
34 } | 34 } |
35 | 35 |
36 } // namespace | 36 } // namespace |
37 | 37 |
38 // Map from AXTreeID to BrowserAccessibilityManager | 38 // Map from AXTreeID to BrowserAccessibilityManager |
39 using AXTreeIDMap = | 39 using AXTreeIDMap = |
40 base::hash_map<AXTreeIDRegistry::AXTreeID, BrowserAccessibilityManager*>; | 40 base::hash_map<AXTreeIDRegistry::AXTreeID, BrowserAccessibilityManager*>; |
41 base::LazyInstance<AXTreeIDMap> g_ax_tree_id_map = LAZY_INSTANCE_INITIALIZER; | 41 base::LazyInstance<AXTreeIDMap> g_ax_tree_id_map = LAZY_INSTANCE_INITIALIZER; |
42 | 42 |
43 SimpleAXTreeUpdate MakeAXTreeUpdate( | 43 ui::AXTreeUpdate MakeAXTreeUpdate( |
44 const ui::AXNodeData& node1, | 44 const ui::AXNodeData& node1, |
45 const ui::AXNodeData& node2 /* = ui::AXNodeData() */, | 45 const ui::AXNodeData& node2 /* = ui::AXNodeData() */, |
46 const ui::AXNodeData& node3 /* = ui::AXNodeData() */, | 46 const ui::AXNodeData& node3 /* = ui::AXNodeData() */, |
47 const ui::AXNodeData& node4 /* = ui::AXNodeData() */, | 47 const ui::AXNodeData& node4 /* = ui::AXNodeData() */, |
48 const ui::AXNodeData& node5 /* = ui::AXNodeData() */, | 48 const ui::AXNodeData& node5 /* = ui::AXNodeData() */, |
49 const ui::AXNodeData& node6 /* = ui::AXNodeData() */, | 49 const ui::AXNodeData& node6 /* = ui::AXNodeData() */, |
50 const ui::AXNodeData& node7 /* = ui::AXNodeData() */, | 50 const ui::AXNodeData& node7 /* = ui::AXNodeData() */, |
51 const ui::AXNodeData& node8 /* = ui::AXNodeData() */, | 51 const ui::AXNodeData& node8 /* = ui::AXNodeData() */, |
52 const ui::AXNodeData& node9 /* = ui::AXNodeData() */) { | 52 const ui::AXNodeData& node9 /* = ui::AXNodeData() */) { |
53 CR_DEFINE_STATIC_LOCAL(ui::AXNodeData, empty_data, ()); | 53 CR_DEFINE_STATIC_LOCAL(ui::AXNodeData, empty_data, ()); |
54 int32 no_id = empty_data.id; | 54 int32 no_id = empty_data.id; |
55 | 55 |
56 SimpleAXTreeUpdate update; | 56 ui::AXTreeUpdate update; |
57 update.nodes.push_back(node1); | 57 update.nodes.push_back(node1); |
58 if (node2.id != no_id) | 58 if (node2.id != no_id) |
59 update.nodes.push_back(node2); | 59 update.nodes.push_back(node2); |
60 if (node3.id != no_id) | 60 if (node3.id != no_id) |
61 update.nodes.push_back(node3); | 61 update.nodes.push_back(node3); |
62 if (node4.id != no_id) | 62 if (node4.id != no_id) |
63 update.nodes.push_back(node4); | 63 update.nodes.push_back(node4); |
64 if (node5.id != no_id) | 64 if (node5.id != no_id) |
65 update.nodes.push_back(node5); | 65 update.nodes.push_back(node5); |
66 if (node6.id != no_id) | 66 if (node6.id != no_id) |
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88 active_request_id(-1) {} | 88 active_request_id(-1) {} |
89 | 89 |
90 #if !defined(OS_WIN) && \ | 90 #if !defined(OS_WIN) && \ |
91 !defined(OS_MACOSX) && \ | 91 !defined(OS_MACOSX) && \ |
92 !defined(OS_ANDROID) && \ | 92 !defined(OS_ANDROID) && \ |
93 !(defined(OS_LINUX) && !defined(OS_CHROMEOS) && defined(USE_X11)) | 93 !(defined(OS_LINUX) && !defined(OS_CHROMEOS) && defined(USE_X11)) |
94 // We have subclassess of BrowserAccessibility on some platforms. | 94 // We have subclassess of BrowserAccessibility on some platforms. |
95 // For other platforms, instantiate the base class. | 95 // For other platforms, instantiate the base class. |
96 // static | 96 // static |
97 BrowserAccessibilityManager* BrowserAccessibilityManager::Create( | 97 BrowserAccessibilityManager* BrowserAccessibilityManager::Create( |
98 const SimpleAXTreeUpdate& initial_tree, | 98 const ui::AXTreeUpdate& initial_tree, |
99 BrowserAccessibilityDelegate* delegate, | 99 BrowserAccessibilityDelegate* delegate, |
100 BrowserAccessibilityFactory* factory) { | 100 BrowserAccessibilityFactory* factory) { |
101 return new BrowserAccessibilityManager(initial_tree, delegate, factory); | 101 return new BrowserAccessibilityManager(initial_tree, delegate, factory); |
102 } | 102 } |
103 #endif | 103 #endif |
104 | 104 |
105 // static | 105 // static |
106 BrowserAccessibilityManager* BrowserAccessibilityManager::FromID( | 106 BrowserAccessibilityManager* BrowserAccessibilityManager::FromID( |
107 AXTreeIDRegistry::AXTreeID ax_tree_id) { | 107 AXTreeIDRegistry::AXTreeID ax_tree_id) { |
108 AXTreeIDMap* ax_tree_id_map = g_ax_tree_id_map.Pointer(); | 108 AXTreeIDMap* ax_tree_id_map = g_ax_tree_id_map.Pointer(); |
109 auto iter = ax_tree_id_map->find(ax_tree_id); | 109 auto iter = ax_tree_id_map->find(ax_tree_id); |
110 return iter == ax_tree_id_map->end() ? nullptr : iter->second; | 110 return iter == ax_tree_id_map->end() ? nullptr : iter->second; |
111 } | 111 } |
112 | 112 |
113 BrowserAccessibilityManager::BrowserAccessibilityManager( | 113 BrowserAccessibilityManager::BrowserAccessibilityManager( |
114 BrowserAccessibilityDelegate* delegate, | 114 BrowserAccessibilityDelegate* delegate, |
115 BrowserAccessibilityFactory* factory) | 115 BrowserAccessibilityFactory* factory) |
116 : delegate_(delegate), | 116 : delegate_(delegate), |
117 factory_(factory), | 117 factory_(factory), |
118 tree_(new ui::AXSerializableTree()), | 118 tree_(new ui::AXSerializableTree()), |
119 focus_(NULL), | 119 focus_(NULL), |
120 user_is_navigating_away_(false), | 120 user_is_navigating_away_(false), |
121 osk_state_(OSK_ALLOWED), | 121 osk_state_(OSK_ALLOWED), |
122 ax_tree_id_(AXTreeIDRegistry::kNoAXTreeID), | 122 ax_tree_id_(AXTreeIDRegistry::kNoAXTreeID), |
123 parent_node_id_from_parent_tree_(0) { | 123 parent_node_id_from_parent_tree_(0) { |
124 tree_->SetDelegate(this); | 124 tree_->SetDelegate(this); |
125 } | 125 } |
126 | 126 |
127 BrowserAccessibilityManager::BrowserAccessibilityManager( | 127 BrowserAccessibilityManager::BrowserAccessibilityManager( |
128 const SimpleAXTreeUpdate& initial_tree, | 128 const ui::AXTreeUpdate& initial_tree, |
129 BrowserAccessibilityDelegate* delegate, | 129 BrowserAccessibilityDelegate* delegate, |
130 BrowserAccessibilityFactory* factory) | 130 BrowserAccessibilityFactory* factory) |
131 : delegate_(delegate), | 131 : delegate_(delegate), |
132 factory_(factory), | 132 factory_(factory), |
133 tree_(new ui::AXSerializableTree()), | 133 tree_(new ui::AXSerializableTree()), |
134 focus_(NULL), | 134 focus_(NULL), |
135 user_is_navigating_away_(false), | 135 user_is_navigating_away_(false), |
136 osk_state_(OSK_ALLOWED), | 136 osk_state_(OSK_ALLOWED), |
137 ax_tree_id_(AXTreeIDRegistry::kNoAXTreeID), | 137 ax_tree_id_(AXTreeIDRegistry::kNoAXTreeID), |
138 parent_node_id_from_parent_tree_(0) { | 138 parent_node_id_from_parent_tree_(0) { |
139 tree_->SetDelegate(this); | 139 tree_->SetDelegate(this); |
140 Initialize(initial_tree); | 140 Initialize(initial_tree); |
141 } | 141 } |
142 | 142 |
143 BrowserAccessibilityManager::~BrowserAccessibilityManager() { | 143 BrowserAccessibilityManager::~BrowserAccessibilityManager() { |
144 tree_.reset(NULL); | 144 tree_.reset(NULL); |
145 } | 145 } |
146 | 146 |
147 void BrowserAccessibilityManager::Initialize( | 147 void BrowserAccessibilityManager::Initialize( |
148 const SimpleAXTreeUpdate& initial_tree) { | 148 const ui::AXTreeUpdate& initial_tree) { |
149 if (!tree_->Unserialize(initial_tree)) { | 149 if (!tree_->Unserialize(initial_tree)) { |
150 if (delegate_) { | 150 if (delegate_) { |
151 LOG(ERROR) << tree_->error(); | 151 LOG(ERROR) << tree_->error(); |
152 delegate_->AccessibilityFatalError(); | 152 delegate_->AccessibilityFatalError(); |
153 } else { | 153 } else { |
154 LOG(FATAL) << tree_->error(); | 154 LOG(FATAL) << tree_->error(); |
155 } | 155 } |
156 } | 156 } |
157 | 157 |
158 if (!focus_) | 158 if (!focus_) |
159 SetFocus(tree_->root(), false); | 159 SetFocus(tree_->root(), false); |
160 } | 160 } |
161 | 161 |
162 // static | 162 // static |
163 SimpleAXTreeUpdate | 163 ui::AXTreeUpdate |
164 BrowserAccessibilityManager::GetEmptyDocument() { | 164 BrowserAccessibilityManager::GetEmptyDocument() { |
165 ui::AXNodeData empty_document; | 165 ui::AXNodeData empty_document; |
166 empty_document.id = 0; | 166 empty_document.id = 0; |
167 empty_document.role = ui::AX_ROLE_ROOT_WEB_AREA; | 167 empty_document.role = ui::AX_ROLE_ROOT_WEB_AREA; |
168 SimpleAXTreeUpdate update; | 168 ui::AXTreeUpdate update; |
169 update.nodes.push_back(empty_document); | 169 update.nodes.push_back(empty_document); |
170 return update; | 170 return update; |
171 } | 171 } |
172 | 172 |
173 BrowserAccessibility* BrowserAccessibilityManager::GetRoot() { | 173 BrowserAccessibility* BrowserAccessibilityManager::GetRoot() { |
174 // tree_->root() can be null during AXTreeDelegate callbacks. | 174 // tree_->root() can be null during AXTreeDelegate callbacks. |
175 ui::AXNode* root = tree_->root(); | 175 ui::AXNode* root = tree_->root(); |
176 return root ? GetFromAXNode(root) : nullptr; | 176 return root ? GetFromAXNode(root) : nullptr; |
177 } | 177 } |
178 | 178 |
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189 return iter->second; | 189 return iter->second; |
190 | 190 |
191 return nullptr; | 191 return nullptr; |
192 } | 192 } |
193 | 193 |
194 BrowserAccessibility* | 194 BrowserAccessibility* |
195 BrowserAccessibilityManager::GetParentNodeFromParentTree() { | 195 BrowserAccessibilityManager::GetParentNodeFromParentTree() { |
196 if (!GetRoot()) | 196 if (!GetRoot()) |
197 return nullptr; | 197 return nullptr; |
198 | 198 |
199 int parent_tree_id = GetRoot()->GetIntAttribute(ui::AX_ATTR_PARENT_TREE_ID); | 199 int parent_tree_id = GetTreeData().parent_tree_id; |
200 BrowserAccessibilityManager* parent_manager = | 200 BrowserAccessibilityManager* parent_manager = |
201 BrowserAccessibilityManager::FromID(parent_tree_id); | 201 BrowserAccessibilityManager::FromID(parent_tree_id); |
202 if (!parent_manager) | 202 if (!parent_manager) |
203 return nullptr; | 203 return nullptr; |
204 | 204 |
205 // Try to use the cached parent node from the most recent time this | 205 // Try to use the cached parent node from the most recent time this |
206 // was called. | 206 // was called. |
207 if (parent_node_id_from_parent_tree_) { | 207 if (parent_node_id_from_parent_tree_) { |
208 BrowserAccessibility* parent_node = parent_manager->GetFromID( | 208 BrowserAccessibility* parent_node = parent_manager->GetFromID( |
209 parent_node_id_from_parent_tree_); | 209 parent_node_id_from_parent_tree_); |
210 if (parent_node) { | 210 if (parent_node) { |
211 int parent_child_tree_id = | 211 int parent_child_tree_id = |
212 parent_node->GetIntAttribute(ui::AX_ATTR_CHILD_TREE_ID); | 212 parent_node->GetIntAttribute(ui::AX_ATTR_CHILD_TREE_ID); |
213 if (parent_child_tree_id == ax_tree_id_) | 213 if (parent_child_tree_id == ax_tree_id_) |
214 return parent_node; | 214 return parent_node; |
215 } | 215 } |
216 } | 216 } |
217 | 217 |
218 // If that fails, search for it and cache it for next time. | 218 // If that fails, search for it and cache it for next time. |
219 BrowserAccessibility* parent_node = FindNodeWithChildTreeId( | 219 BrowserAccessibility* parent_node = FindNodeWithChildTreeId( |
220 parent_manager->GetRoot(), ax_tree_id_); | 220 parent_manager->GetRoot(), ax_tree_id_); |
221 if (parent_node) { | 221 if (parent_node) { |
222 parent_node_id_from_parent_tree_ = parent_node->GetId(); | 222 parent_node_id_from_parent_tree_ = parent_node->GetId(); |
223 return parent_node; | 223 return parent_node; |
224 } | 224 } |
225 | 225 |
226 return nullptr; | 226 return nullptr; |
227 } | 227 } |
228 | 228 |
| 229 const ui::AXTreeData& BrowserAccessibilityManager::GetTreeData() { |
| 230 return tree_->data(); |
| 231 } |
| 232 |
229 void BrowserAccessibilityManager::OnWindowFocused() { | 233 void BrowserAccessibilityManager::OnWindowFocused() { |
230 if (focus_) | 234 if (focus_) |
231 NotifyAccessibilityEvent(ui::AX_EVENT_FOCUS, GetFromAXNode(focus_)); | 235 NotifyAccessibilityEvent(ui::AX_EVENT_FOCUS, GetFromAXNode(focus_)); |
232 } | 236 } |
233 | 237 |
234 void BrowserAccessibilityManager::OnWindowBlurred() { | 238 void BrowserAccessibilityManager::OnWindowBlurred() { |
235 if (focus_) | 239 if (focus_) |
236 NotifyAccessibilityEvent(ui::AX_EVENT_BLUR, GetFromAXNode(focus_)); | 240 NotifyAccessibilityEvent(ui::AX_EVENT_BLUR, GetFromAXNode(focus_)); |
237 } | 241 } |
238 | 242 |
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520 | 524 |
521 BrowserAccessibility* BrowserAccessibilityManager::NextTextOnlyObject( | 525 BrowserAccessibility* BrowserAccessibilityManager::NextTextOnlyObject( |
522 BrowserAccessibility* node) const { | 526 BrowserAccessibility* node) const { |
523 BrowserAccessibility* next_node = NextInTreeOrder(node); | 527 BrowserAccessibility* next_node = NextInTreeOrder(node); |
524 while (next_node && !next_node->IsTextOnlyObject()) | 528 while (next_node && !next_node->IsTextOnlyObject()) |
525 next_node = NextInTreeOrder(next_node); | 529 next_node = NextInTreeOrder(next_node); |
526 | 530 |
527 return next_node; | 531 return next_node; |
528 } | 532 } |
529 | 533 |
| 534 void BrowserAccessibilityManager::OnTreeDataChanged(ui::AXTree* tree) { |
| 535 } |
| 536 |
530 void BrowserAccessibilityManager::OnNodeWillBeDeleted(ui::AXTree* tree, | 537 void BrowserAccessibilityManager::OnNodeWillBeDeleted(ui::AXTree* tree, |
531 ui::AXNode* node) { | 538 ui::AXNode* node) { |
532 DCHECK(node); | 539 DCHECK(node); |
533 if (node == focus_ && tree_) { | 540 if (node == focus_ && tree_) { |
534 if (node != tree_->root()) | 541 if (node != tree_->root()) |
535 SetFocus(tree_->root(), false); | 542 SetFocus(tree_->root(), false); |
536 else | 543 else |
537 focus_ = NULL; | 544 focus_ = NULL; |
538 } | 545 } |
539 if (id_wrapper_map_.find(node->id()) == id_wrapper_map_.end()) | 546 if (id_wrapper_map_.find(node->id()) == id_wrapper_map_.end()) |
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561 void BrowserAccessibilityManager::OnNodeChanged(ui::AXTree* tree, | 568 void BrowserAccessibilityManager::OnNodeChanged(ui::AXTree* tree, |
562 ui::AXNode* node) { | 569 ui::AXNode* node) { |
563 DCHECK(node); | 570 DCHECK(node); |
564 GetFromAXNode(node)->OnDataChanged(); | 571 GetFromAXNode(node)->OnDataChanged(); |
565 } | 572 } |
566 | 573 |
567 void BrowserAccessibilityManager::OnAtomicUpdateFinished( | 574 void BrowserAccessibilityManager::OnAtomicUpdateFinished( |
568 ui::AXTree* tree, | 575 ui::AXTree* tree, |
569 bool root_changed, | 576 bool root_changed, |
570 const std::vector<ui::AXTreeDelegate::Change>& changes) { | 577 const std::vector<ui::AXTreeDelegate::Change>& changes) { |
571 if (GetRoot()->HasIntAttribute(ui::AX_ATTR_TREE_ID) && | 578 if (GetTreeData().tree_id != -1 && GetTreeData().tree_id != ax_tree_id_) { |
572 GetRoot()->GetIntAttribute(ui::AX_ATTR_TREE_ID) != ax_tree_id_) { | |
573 g_ax_tree_id_map.Get().erase(ax_tree_id_); | 579 g_ax_tree_id_map.Get().erase(ax_tree_id_); |
574 ax_tree_id_ = GetRoot()->GetIntAttribute(ui::AX_ATTR_TREE_ID); | 580 ax_tree_id_ = GetTreeData().tree_id; |
575 g_ax_tree_id_map.Get().insert(std::make_pair(ax_tree_id_, this)); | 581 g_ax_tree_id_map.Get().insert(std::make_pair(ax_tree_id_, this)); |
576 } | 582 } |
577 } | 583 } |
578 | 584 |
579 BrowserAccessibilityDelegate* | 585 BrowserAccessibilityDelegate* |
580 BrowserAccessibilityManager::GetDelegateFromRootManager() { | 586 BrowserAccessibilityManager::GetDelegateFromRootManager() { |
581 if (!GetRoot()) | 587 if (!GetRoot()) |
582 return nullptr; | 588 return nullptr; |
583 int parent_tree_id = GetRoot()->GetIntAttribute(ui::AX_ATTR_PARENT_TREE_ID); | 589 int parent_tree_id = GetTreeData().parent_tree_id; |
584 BrowserAccessibilityManager* parent_manager = | 590 BrowserAccessibilityManager* parent_manager = |
585 BrowserAccessibilityManager::FromID(parent_tree_id); | 591 BrowserAccessibilityManager::FromID(parent_tree_id); |
586 if (parent_manager) | 592 if (parent_manager) |
587 return parent_manager->GetDelegateFromRootManager(); | 593 return parent_manager->GetDelegateFromRootManager(); |
588 return delegate(); | 594 return delegate(); |
589 } | 595 } |
590 | 596 |
591 SimpleAXTreeUpdate | 597 ui::AXTreeUpdate |
592 BrowserAccessibilityManager::SnapshotAXTreeForTesting() { | 598 BrowserAccessibilityManager::SnapshotAXTreeForTesting() { |
593 scoped_ptr<ui::AXTreeSource<const ui::AXNode*, ui::AXNodeData> > tree_source( | 599 scoped_ptr<ui::AXTreeSource<const ui::AXNode*, |
| 600 ui::AXNodeData, |
| 601 ui::AXTreeData> > tree_source( |
594 tree_->CreateTreeSource()); | 602 tree_->CreateTreeSource()); |
595 ui::AXTreeSerializer<const ui::AXNode*, ui::AXNodeData> serializer( | 603 ui::AXTreeSerializer<const ui::AXNode*, |
596 tree_source.get()); | 604 ui::AXNodeData, |
597 SimpleAXTreeUpdate update; | 605 ui::AXTreeData> serializer(tree_source.get()); |
| 606 ui::AXTreeUpdate update; |
598 serializer.SerializeChanges(tree_->root(), &update); | 607 serializer.SerializeChanges(tree_->root(), &update); |
599 return update; | 608 return update; |
600 } | 609 } |
601 | 610 |
602 } // namespace content | 611 } // namespace content |
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