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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 #ifndef CONTENT_BROWSER_ACCESSIBILITY_BROWSER_ACCESSIBILITY_H_ | 5 #ifndef CONTENT_BROWSER_ACCESSIBILITY_BROWSER_ACCESSIBILITY_H_ |
| 6 #define CONTENT_BROWSER_ACCESSIBILITY_BROWSER_ACCESSIBILITY_H_ | 6 #define CONTENT_BROWSER_ACCESSIBILITY_BROWSER_ACCESSIBILITY_H_ |
| 7 | 7 |
| 8 #include <stdint.h> |
| 9 |
| 8 #include <map> | 10 #include <map> |
| 9 #include <utility> | 11 #include <utility> |
| 10 #include <vector> | 12 #include <vector> |
| 11 | 13 |
| 12 #include "base/basictypes.h" | 14 #include "base/macros.h" |
| 13 #include "base/strings/string16.h" | 15 #include "base/strings/string16.h" |
| 14 #include "base/strings/string_split.h" | 16 #include "base/strings/string_split.h" |
| 15 #include "build/build_config.h" | 17 #include "build/build_config.h" |
| 16 #include "content/common/content_export.h" | 18 #include "content/common/content_export.h" |
| 17 #include "third_party/WebKit/public/web/WebAXEnums.h" | 19 #include "third_party/WebKit/public/web/WebAXEnums.h" |
| 18 #include "ui/accessibility/ax_node.h" | 20 #include "ui/accessibility/ax_node.h" |
| 19 #include "ui/accessibility/ax_node_data.h" | 21 #include "ui/accessibility/ax_node_data.h" |
| 20 #include "ui/accessibility/ax_text_utils.h" | 22 #include "ui/accessibility/ax_text_utils.h" |
| 21 | 23 |
| 22 // Set PLATFORM_HAS_NATIVE_ACCESSIBILITY_IMPL if this platform has | 24 // Set PLATFORM_HAS_NATIVE_ACCESSIBILITY_IMPL if this platform has |
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| 96 // Returns true if this is a leaf node on this platform, meaning any | 98 // Returns true if this is a leaf node on this platform, meaning any |
| 97 // children should not be exposed to this platform's native accessibility | 99 // children should not be exposed to this platform's native accessibility |
| 98 // layer. Each platform subclass should implement this itself. | 100 // layer. Each platform subclass should implement this itself. |
| 99 // The definition of a leaf may vary depending on the platform, | 101 // The definition of a leaf may vary depending on the platform, |
| 100 // but a leaf node should never have children that are focusable or | 102 // but a leaf node should never have children that are focusable or |
| 101 // that might send notifications. | 103 // that might send notifications. |
| 102 virtual bool PlatformIsLeaf() const; | 104 virtual bool PlatformIsLeaf() const; |
| 103 | 105 |
| 104 // Returns the number of children of this object, or 0 if PlatformIsLeaf() | 106 // Returns the number of children of this object, or 0 if PlatformIsLeaf() |
| 105 // returns true. | 107 // returns true. |
| 106 uint32 PlatformChildCount() const; | 108 uint32_t PlatformChildCount() const; |
| 107 | 109 |
| 108 // Return a pointer to the child at the given index, or NULL for an | 110 // Return a pointer to the child at the given index, or NULL for an |
| 109 // invalid index. Returns NULL if PlatformIsLeaf() returns true. | 111 // invalid index. Returns NULL if PlatformIsLeaf() returns true. |
| 110 BrowserAccessibility* PlatformGetChild(uint32 child_index) const; | 112 BrowserAccessibility* PlatformGetChild(uint32_t child_index) const; |
| 111 | 113 |
| 112 // Returns true if an ancestor of this node (not including itself) is a | 114 // Returns true if an ancestor of this node (not including itself) is a |
| 113 // leaf node, meaning that this node is not actually exposed to the | 115 // leaf node, meaning that this node is not actually exposed to the |
| 114 // platform. | 116 // platform. |
| 115 bool PlatformIsChildOfLeaf() const; | 117 bool PlatformIsChildOfLeaf() const; |
| 116 | 118 |
| 117 BrowserAccessibility* GetPreviousSibling() const; | 119 BrowserAccessibility* GetPreviousSibling() const; |
| 118 BrowserAccessibility* GetNextSibling() const; | 120 BrowserAccessibility* GetNextSibling() const; |
| 119 | 121 |
| 120 // Returns nullptr if there are no children. | 122 // Returns nullptr if there are no children. |
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| 181 // | 183 // |
| 182 | 184 |
| 183 BrowserAccessibilityManager* manager() const { return manager_; } | 185 BrowserAccessibilityManager* manager() const { return manager_; } |
| 184 bool instance_active() const { return node_ != NULL; } | 186 bool instance_active() const { return node_ != NULL; } |
| 185 ui::AXNode* node() const { return node_; } | 187 ui::AXNode* node() const { return node_; } |
| 186 | 188 |
| 187 // These access the internal accessibility tree, which doesn't necessarily | 189 // These access the internal accessibility tree, which doesn't necessarily |
| 188 // reflect the accessibility tree that should be exposed on each platform. | 190 // reflect the accessibility tree that should be exposed on each platform. |
| 189 // Use PlatformChildCount and PlatformGetChild to implement platform | 191 // Use PlatformChildCount and PlatformGetChild to implement platform |
| 190 // accessibility APIs. | 192 // accessibility APIs. |
| 191 uint32 InternalChildCount() const; | 193 uint32_t InternalChildCount() const; |
| 192 BrowserAccessibility* InternalGetChild(uint32 child_index) const; | 194 BrowserAccessibility* InternalGetChild(uint32_t child_index) const; |
| 193 BrowserAccessibility* InternalGetParent() const; | 195 BrowserAccessibility* InternalGetParent() const; |
| 194 | 196 |
| 195 BrowserAccessibility* GetParent() const; | 197 BrowserAccessibility* GetParent() const; |
| 196 int32 GetIndexInParent() const; | 198 int32_t GetIndexInParent() const; |
| 197 | 199 |
| 198 int32 GetId() const; | 200 int32_t GetId() const; |
| 199 const ui::AXNodeData& GetData() const; | 201 const ui::AXNodeData& GetData() const; |
| 200 gfx::Rect GetLocation() const; | 202 gfx::Rect GetLocation() const; |
| 201 int32 GetRole() const; | 203 int32_t GetRole() const; |
| 202 int32 GetState() const; | 204 int32_t GetState() const; |
| 203 | 205 |
| 204 typedef base::StringPairs HtmlAttributes; | 206 typedef base::StringPairs HtmlAttributes; |
| 205 const HtmlAttributes& GetHtmlAttributes() const; | 207 const HtmlAttributes& GetHtmlAttributes() const; |
| 206 | 208 |
| 207 // Returns true if this is a native platform-specific object, vs a | 209 // Returns true if this is a native platform-specific object, vs a |
| 208 // cross-platform generic object. Don't call ToBrowserAccessibilityXXX if | 210 // cross-platform generic object. Don't call ToBrowserAccessibilityXXX if |
| 209 // IsNative returns false. | 211 // IsNative returns false. |
| 210 virtual bool IsNative() const; | 212 virtual bool IsNative() const; |
| 211 | 213 |
| 212 #if defined(OS_MACOSX) && __OBJC__ | 214 #if defined(OS_MACOSX) && __OBJC__ |
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| 252 const std::string& GetStringAttribute(ui::AXStringAttribute attribute) const; | 254 const std::string& GetStringAttribute(ui::AXStringAttribute attribute) const; |
| 253 bool GetStringAttribute(ui::AXStringAttribute attribute, | 255 bool GetStringAttribute(ui::AXStringAttribute attribute, |
| 254 std::string* value) const; | 256 std::string* value) const; |
| 255 | 257 |
| 256 bool GetString16Attribute(ui::AXStringAttribute attribute, | 258 bool GetString16Attribute(ui::AXStringAttribute attribute, |
| 257 base::string16* value) const; | 259 base::string16* value) const; |
| 258 base::string16 GetString16Attribute( | 260 base::string16 GetString16Attribute( |
| 259 ui::AXStringAttribute attribute) const; | 261 ui::AXStringAttribute attribute) const; |
| 260 | 262 |
| 261 bool HasIntListAttribute(ui::AXIntListAttribute attribute) const; | 263 bool HasIntListAttribute(ui::AXIntListAttribute attribute) const; |
| 262 const std::vector<int32>& GetIntListAttribute( | 264 const std::vector<int32_t>& GetIntListAttribute( |
| 263 ui::AXIntListAttribute attribute) const; | 265 ui::AXIntListAttribute attribute) const; |
| 264 bool GetIntListAttribute(ui::AXIntListAttribute attribute, | 266 bool GetIntListAttribute(ui::AXIntListAttribute attribute, |
| 265 std::vector<int32>* value) const; | 267 std::vector<int32_t>* value) const; |
| 266 | 268 |
| 267 // Retrieve the value of a html attribute from the attribute map and | 269 // Retrieve the value of a html attribute from the attribute map and |
| 268 // returns true if found. | 270 // returns true if found. |
| 269 bool GetHtmlAttribute(const char* attr, base::string16* value) const; | 271 bool GetHtmlAttribute(const char* attr, base::string16* value) const; |
| 270 bool GetHtmlAttribute(const char* attr, std::string* value) const; | 272 bool GetHtmlAttribute(const char* attr, std::string* value) const; |
| 271 | 273 |
| 272 // Utility method to handle special cases for ARIA booleans, tristates and | 274 // Utility method to handle special cases for ARIA booleans, tristates and |
| 273 // booleans which have a "mixed" state. | 275 // booleans which have a "mixed" state. |
| 274 // | 276 // |
| 275 // Warning: the term "Tristate" is used loosely by the spec and here, | 277 // Warning: the term "Tristate" is used loosely by the spec and here, |
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| 332 // its nearest scrollable ancestor) to local bounds (which are relative | 334 // its nearest scrollable ancestor) to local bounds (which are relative |
| 333 // to the top of the web accessibility tree). | 335 // to the top of the web accessibility tree). |
| 334 gfx::Rect ElementBoundsToLocalBounds(gfx::Rect bounds) const; | 336 gfx::Rect ElementBoundsToLocalBounds(gfx::Rect bounds) const; |
| 335 | 337 |
| 336 DISALLOW_COPY_AND_ASSIGN(BrowserAccessibility); | 338 DISALLOW_COPY_AND_ASSIGN(BrowserAccessibility); |
| 337 }; | 339 }; |
| 338 | 340 |
| 339 } // namespace content | 341 } // namespace content |
| 340 | 342 |
| 341 #endif // CONTENT_BROWSER_ACCESSIBILITY_BROWSER_ACCESSIBILITY_H_ | 343 #endif // CONTENT_BROWSER_ACCESSIBILITY_BROWSER_ACCESSIBILITY_H_ |
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