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Side by Side Diff: content/browser/accessibility/browser_accessibility_manager.h

Issue 7745035: Add a big grab bag of missing web accessibility functionality... (Closed) Base URL: svn://chrome-svn/chrome/trunk/src/
Patch Set: '' Created 9 years, 3 months ago
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1 // Copyright (c) 2011 The Chromium Authors. All rights reserved. 1 // Copyright (c) 2011 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 CONTENT_BROWSER_ACCESSIBILITY_BROWSER_ACCESSIBILITY_MANAGER_H_ 5 #ifndef CONTENT_BROWSER_ACCESSIBILITY_BROWSER_ACCESSIBILITY_MANAGER_H_
6 #define CONTENT_BROWSER_ACCESSIBILITY_BROWSER_ACCESSIBILITY_MANAGER_H_ 6 #define CONTENT_BROWSER_ACCESSIBILITY_BROWSER_ACCESSIBILITY_MANAGER_H_
7 #pragma once 7 #pragma once
8 8
9 #include <vector> 9 #include <vector>
10 10
11 #include "base/hash_tables.h" 11 #include "base/hash_tables.h"
12 #include "base/memory/scoped_ptr.h" 12 #include "base/memory/scoped_ptr.h"
13 #include "build/build_config.h" 13 #include "build/build_config.h"
14 #include "ui/gfx/native_widget_types.h" 14 #include "ui/gfx/native_widget_types.h"
15 #include "webkit/glue/webaccessibility.h" 15 #include "webkit/glue/webaccessibility.h"
16 16
17 class BrowserAccessibility; 17 class BrowserAccessibility;
18 #if defined(OS_WIN) 18 #if defined(OS_WIN)
19 class BrowserAccessibilityManagerWin; 19 class BrowserAccessibilityManagerWin;
20 #endif 20 #endif
21 21
22 using webkit_glue::WebAccessibility;
23
22 struct ViewHostMsg_AccessibilityNotification_Params; 24 struct ViewHostMsg_AccessibilityNotification_Params;
23 25
24 using webkit_glue::WebAccessibility;
25
26 // Class that can perform actions on behalf of the BrowserAccessibilityManager. 26 // Class that can perform actions on behalf of the BrowserAccessibilityManager.
27 class BrowserAccessibilityDelegate { 27 class BrowserAccessibilityDelegate {
28 public: 28 public:
29 virtual ~BrowserAccessibilityDelegate() {} 29 virtual ~BrowserAccessibilityDelegate() {}
30 virtual void SetAccessibilityFocus(int acc_obj_id) = 0; 30 virtual void SetAccessibilityFocus(int acc_obj_id) = 0;
31 virtual void AccessibilityDoDefaultAction(int acc_obj_id) = 0; 31 virtual void AccessibilityDoDefaultAction(int acc_obj_id) = 0;
32 virtual bool HasFocus() = 0; 32 virtual bool HasFocus() = 0;
33 virtual gfx::Rect GetViewBounds() const = 0; 33 virtual gfx::Rect GetViewBounds() const = 0;
34 }; 34 };
35 35
(...skipping 20 matching lines...) Expand all
56 // Creates the platform specific BrowserAccessibilityManager. Ownership passes 56 // Creates the platform specific BrowserAccessibilityManager. Ownership passes
57 // to the caller. 57 // to the caller.
58 static BrowserAccessibilityManager* CreateEmptyDocument( 58 static BrowserAccessibilityManager* CreateEmptyDocument(
59 gfx::NativeView parent_view, 59 gfx::NativeView parent_view,
60 WebAccessibility::State state, 60 WebAccessibility::State state,
61 BrowserAccessibilityDelegate* delegate, 61 BrowserAccessibilityDelegate* delegate,
62 BrowserAccessibilityFactory* factory = new BrowserAccessibilityFactory()); 62 BrowserAccessibilityFactory* factory = new BrowserAccessibilityFactory());
63 63
64 virtual ~BrowserAccessibilityManager(); 64 virtual ~BrowserAccessibilityManager();
65 65
66 // Type is a ViewHostMsg_AccessibilityNotification_Params::int. 66 // Type is a ViewHostMsg_AccessibilityNotification_Type::int.
67 // We pass it as int so that we don't include the render message declaration 67 // We pass it as int so that we don't include the render message declaration
68 // header here. 68 // header here.
69 virtual void NotifyAccessibilityEvent( 69 virtual void NotifyAccessibilityEvent(
70 int type, 70 int type,
71 BrowserAccessibility* node) { } 71 BrowserAccessibility* node) { }
72 72
73 // Returns the next unique child id. 73 // Returns the next unique child id.
74 static int32 GetNextChildID(); 74 static int32 GetNextChildID();
75 75
76 // Return a pointer to the root of the tree, does not make a new reference. 76 // Return a pointer to the root of the tree, does not make a new reference.
(...skipping 41 matching lines...) Expand 10 before | Expand all | Expand 10 after
118 BrowserAccessibility* GetFocus(BrowserAccessibility* root); 118 BrowserAccessibility* GetFocus(BrowserAccessibility* root);
119 119
120 protected: 120 protected:
121 BrowserAccessibilityManager( 121 BrowserAccessibilityManager(
122 gfx::NativeView parent_view, 122 gfx::NativeView parent_view,
123 const WebAccessibility& src, 123 const WebAccessibility& src,
124 BrowserAccessibilityDelegate* delegate, 124 BrowserAccessibilityDelegate* delegate,
125 BrowserAccessibilityFactory* factory); 125 BrowserAccessibilityFactory* factory);
126 126
127 private: 127 private:
128 void OnAccessibilityObjectStateChange( 128 // Type is a ViewHostMsg_AccessibilityNotification_Type::int.
129 const WebAccessibility& acc_obj); 129 // We pass it as int so that we don't include the render message declaration
130 void OnAccessibilityObjectChildrenChange( 130 // header here.
131 const WebAccessibility& acc_obj); 131 void OnSimpleAccessibilityNotification(
132 const WebAccessibility& acc_obj,
133 int type,
134 bool include_children);
135
132 void OnAccessibilityObjectFocusChange( 136 void OnAccessibilityObjectFocusChange(
133 const WebAccessibility& acc_obj); 137 const WebAccessibility& acc_obj);
134 void OnAccessibilityObjectLoadComplete( 138 void OnAccessibilityObjectLoadComplete(
135 const WebAccessibility& acc_obj); 139 const WebAccessibility& acc_obj);
136 void OnAccessibilityObjectValueChange(
137 const WebAccessibility& acc_obj);
138 void OnAccessibilityObjectTextChange(
139 const WebAccessibility& acc_obj);
140 140
141 // Update an accessibility node with an updated WebAccessibility node 141 // Update an accessibility node with an updated WebAccessibility node
142 // received from the renderer process. When |include_children| is true 142 // received from the renderer process. When |include_children| is true
143 // the node's children will also be updated, otherwise only the node 143 // the node's children will also be updated, otherwise only the node
144 // itself is updated. Returns the updated node or NULL if no node was 144 // itself is updated. Returns the updated node or NULL if no node was
145 // updated. 145 // updated.
146 BrowserAccessibility* UpdateNode( 146 BrowserAccessibility* UpdateNode(
147 const WebAccessibility& src, 147 const WebAccessibility& src,
148 bool include_children); 148 bool include_children);
149 149
150 // Recursively build a tree of BrowserAccessibility objects from 150 // Recursively build a tree of BrowserAccessibility objects from
151 // the WebAccessibility tree received from the renderer process. 151 // the WebAccessibility tree received from the renderer process.
152 BrowserAccessibility* CreateAccessibilityTree( 152 BrowserAccessibility* CreateAccessibilityTree(
153 BrowserAccessibility* parent, 153 BrowserAccessibility* parent,
154 const WebAccessibility& src, 154 const WebAccessibility& src,
155 int index_in_parent); 155 int index_in_parent,
156 bool send_show_events);
156 157
157 protected: 158 protected:
158 // The next unique id for a BrowserAccessibility instance. 159 // The next unique id for a BrowserAccessibility instance.
159 static int32 next_child_id_; 160 static int32 next_child_id_;
160 161
161 // The parent view. 162 // The parent view.
162 gfx::NativeView parent_view_; 163 gfx::NativeView parent_view_;
163 164
164 // The object that can perform actions on our behalf. 165 // The object that can perform actions on our behalf.
165 BrowserAccessibilityDelegate* delegate_; 166 BrowserAccessibilityDelegate* delegate_;
(...skipping 10 matching lines...) Expand all
176 // we use internally here. 177 // we use internally here.
177 base::hash_map<int32, int32> renderer_id_to_child_id_map_; 178 base::hash_map<int32, int32> renderer_id_to_child_id_map_;
178 179
179 // A mapping from child IDs to BrowserAccessibility objects. 180 // A mapping from child IDs to BrowserAccessibility objects.
180 base::hash_map<int32, BrowserAccessibility*> child_id_map_; 181 base::hash_map<int32, BrowserAccessibility*> child_id_map_;
181 182
182 DISALLOW_COPY_AND_ASSIGN(BrowserAccessibilityManager); 183 DISALLOW_COPY_AND_ASSIGN(BrowserAccessibilityManager);
183 }; 184 };
184 185
185 #endif // CONTENT_BROWSER_ACCESSIBILITY_BROWSER_ACCESSIBILITY_MANAGER_H_ 186 #endif // CONTENT_BROWSER_ACCESSIBILITY_BROWSER_ACCESSIBILITY_MANAGER_H_
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