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| 1 // Copyright (c) 2014 The Chromium Authors. All rights reserved. | |
| 2 // Use of this source code is governed by a BSD-style license that can be | |
| 3 // found in the LICENSE file. | |
| 4 | |
| 5 #include "ui/views/accessibility/ax_tree_source_views.h" | |
| 6 | |
| 7 #include "base/strings/utf_string_conversions.h" | |
| 8 #include "ui/accessibility/ax_view_state.h" | |
| 9 #include "ui/views/widget/widget.h" | |
| 10 | |
| 11 namespace views { | |
| 12 | |
| 13 // A simple store associating each |View| with a unique id. | |
| 14 class AXViewStore { | |
| 15 public: | |
| 16 AXViewStore() : view_id_(0) {}; | |
| 17 | |
| 18 int32 GetOrStoreView(View* view) { | |
| 19 int32 current_id = RetrieveId(view); | |
| 20 if (current_id != -1) | |
| 21 return current_id; | |
| 22 id_to_view_[++view_id_] = view; | |
| 23 view_to_id_[view] = view_id_; | |
| 24 return view_id_; | |
| 25 } | |
| 26 | |
| 27 void RemoveView(View* view) { | |
| 28 std::map<View*, int32>::iterator view_it = view_to_id_.find(view); | |
| 29 if (view_it == view_to_id_.end()) | |
| 30 return; | |
| 31 int32 view_id = view_it->second; | |
| 32 view_to_id_.erase(view_it); | |
| 33 std::map<int32, View*>::iterator id_it = id_to_view_.find(view_id); | |
| 34 if (id_it == id_to_view_.end()) { | |
| 35 NOTREACHED(); | |
| 36 return; | |
| 37 } | |
| 38 id_to_view_.erase(id_it); | |
| 39 } | |
| 40 | |
| 41 View* RetrieveView(int32 id) { | |
| 42 std::map<int32, View*>::iterator it = id_to_view_.find(id); | |
| 43 if (it != id_to_view_.end()) | |
| 44 return it->second; | |
| 45 return NULL; | |
| 46 } | |
| 47 | |
| 48 int32 RetrieveId(View* view) { | |
| 49 if (!view) | |
| 50 return -1; | |
| 51 std::map<View*, int32>::iterator it = view_to_id_.find(view); | |
| 52 if (it != view_to_id_.end()) | |
| 53 return it->second; | |
| 54 return -1; | |
| 55 } | |
| 56 | |
| 57 private: | |
| 58 // Unique id assigned to a view. | |
| 59 int32 view_id_; | |
| 60 | |
| 61 // Maps from id to |View*| and |View*| to id. | |
| 62 std::map<int32, View*> id_to_view_; | |
| 63 std::map<View*, int32> view_to_id_; | |
| 64 }; | |
| 65 | |
| 66 AXTreeSourceViews::AXTreeSourceViews(Widget* root) : | |
| 67 view_store_(new AXViewStore()), | |
| 68 root_(root) { | |
| 69 root->AddObserver(this); | |
| 70 } | |
| 71 | |
| 72 AXTreeSourceViews::~AXTreeSourceViews() { | |
| 73 if (root_) | |
| 74 root_->RemoveObserver(this); | |
| 75 } | |
| 76 | |
| 77 View* AXTreeSourceViews::GetRoot() const { | |
| 78 if (!root_) | |
| 79 return NULL; | |
| 80 return root_->GetRootView(); | |
| 81 } | |
| 82 | |
| 83 View* AXTreeSourceViews::GetFromId(int32 id) const { | |
| 84 return view_store_->RetrieveView(id); | |
| 85 } | |
| 86 | |
| 87 int32 AXTreeSourceViews::GetId(View* node) const { | |
| 88 return view_store_->GetOrStoreView(node); | |
| 89 } | |
| 90 | |
| 91 void AXTreeSourceViews::GetChildren(View* node, | |
| 92 std::vector<View*>* out_children) const { | |
| 93 for (int i = 0; i < node->child_count(); ++i) { | |
| 94 View* child_view = node->child_at(i); | |
| 95 out_children->push_back(child_view); | |
| 96 } | |
| 97 } | |
| 98 | |
| 99 View* AXTreeSourceViews::GetParent(View* node) const { | |
| 100 return node->parent(); | |
| 101 } | |
| 102 | |
| 103 bool AXTreeSourceViews::IsValid(View* node) const { | |
| 104 if (root_ && root_->GetRootView()) | |
| 105 return root_->GetRootView()->Contains(node); | |
| 106 return false; | |
| 107 } | |
| 108 | |
| 109 bool AXTreeSourceViews::IsEqual(View* node1, | |
| 110 View* node2) const { | |
| 111 return node1 == node2; | |
| 112 } | |
| 113 | |
| 114 View* AXTreeSourceViews::GetNull() const { | |
| 115 return NULL; | |
| 116 } | |
| 117 | |
| 118 void AXTreeSourceViews::SerializeNode( | |
| 119 View* node, ui::AXNodeData* out_data) const { | |
| 120 ui::AXViewState view_data; | |
| 121 const_cast<View*>(node)->GetAccessibleState(&view_data); | |
| 122 out_data->id = view_store_->GetOrStoreView(node); | |
| 123 out_data->role = view_data.role; | |
| 124 out_data->state = view_data.state; | |
| 125 out_data->location = node->GetBoundsInScreen(); | |
| 126 out_data->AddStringAttribute( | |
| 127 ui::AX_ATTR_NAME, base::UTF16ToUTF8(view_data.name)); | |
| 128 out_data->AddStringAttribute( | |
| 129 ui::AX_ATTR_VALUE, base::UTF16ToUTF8(view_data.value)); | |
| 130 } | |
| 131 | |
| 132 void AXTreeSourceViews::OnViewRemoved(Widget* widget, View* view) { | |
| 133 if (widget == root_) | |
| 134 view_store_->RemoveView(view); | |
| 135 } | |
| 136 | |
| 137 void AXTreeSourceViews::OnWidgetDestroyed(Widget* widget) { | |
| 138 if (widget == root_) | |
| 139 root_ = NULL; | |
| 140 } | |
| 141 | |
| 142 } // namespace views | |
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Chromium Code Reviews
Issue 196953009:
Revert 256563 "Reland r256396 Add views implementation for AXTre..." (Closed)
Base URL: svn://svn.chromium.org/chrome/