Implemented the reporting of text style and language information on Windows.

content/browser/accessibility/browser_accessibility.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CONTENT_BROWSER_ACCESSIBILITY_BROWSER_ACCESSIBILITY_H_
 #define CONTENT_BROWSER_ACCESSIBILITY_BROWSER_ACCESSIBILITY_H_
 
 #include <stdint.h>
 
 #include <map>
@@ skipping 174 matching lines @@
   virtual void NativeAddReference() { }
 
   // Subclasses should override this to support platform reference counting.
   virtual void NativeReleaseReference();
 
   //
   // Accessors
   //
 
   BrowserAccessibilityManager* manager() const { return manager_; }
-  bool instance_active() const { return node_ != NULL; }
+  bool instance_active() const { return node_ && manager_; }
   ui::AXNode* node() const { return node_; }
 
   // These access the internal accessibility tree, which doesn't necessarily
   // reflect the accessibility tree that should be exposed on each platform.
   // Use PlatformChildCount and PlatformGetChild to implement platform
   // accessibility APIs.
   uint32_t InternalChildCount() const;
   BrowserAccessibility* InternalGetChild(uint32_t child_index) const;
   BrowserAccessibility* InternalGetParent() const;
 
@@ skipping 41 matching lines @@
   // either std::string or base::string16, for convenience.
 
   bool HasBoolAttribute(ui::AXBoolAttribute attr) const;
   bool GetBoolAttribute(ui::AXBoolAttribute attr) const;
   bool GetBoolAttribute(ui::AXBoolAttribute attr, bool* value) const;
 
   bool HasFloatAttribute(ui::AXFloatAttribute attr) const;
   float GetFloatAttribute(ui::AXFloatAttribute attr) const;
   bool GetFloatAttribute(ui::AXFloatAttribute attr, float* value) const;
 
+  bool HasInheritedStringAttribute(ui::AXStringAttribute attribute) const;
+  std::string GetInheritedStringAttribute(
+      ui::AXStringAttribute attribute) const;
+  bool GetInheritedStringAttribute(ui::AXStringAttribute attribute,
+                                   std::string* value) const;
+
+  bool GetInheritedString16Attribute(ui::AXStringAttribute attribute,
+                                     base::string16* value) const;
+  base::string16 GetInheritedString16Attribute(
+      ui::AXStringAttribute attribute) const;
+
   bool HasIntAttribute(ui::AXIntAttribute attribute) const;
   int GetIntAttribute(ui::AXIntAttribute attribute) const;
   bool GetIntAttribute(ui::AXIntAttribute attribute, int* value) const;
 
   bool HasStringAttribute(
       ui::AXStringAttribute attribute) const;
   const std::string& GetStringAttribute(ui::AXStringAttribute attribute) const;
   bool GetStringAttribute(ui::AXStringAttribute attribute,
                           std::string* value) const;
 
@@ skipping 22 matching lines @@
   // The following attributes are appropriate to use with this method:
   // aria-selected  (selectable)
   // aria-grabbed   (grabbable)
   // aria-expanded  (expandable)
   // aria-pressed   (toggleable/pressable) -- supports 4th "mixed" state
   // aria-checked   (checkable) -- supports 4th "mixed state"
   bool GetAriaTristate(const char* attr_name,
                        bool* is_defined,
                        bool* is_mixed) const;
 
+  base::string16 GetFontFamily() const;
+  base::string16 GetLanguage() const;
   virtual base::string16 GetText() const;
 
   // Returns true if the bit corresponding to the given state enum is 1.
   bool HasState(ui::AXState state_enum) const;
 
   // Returns true if this node is an cell or an table header.
   bool IsCellOrTableHeaderRole() const;
 
   // Returns true if the caret is active on this object.
   bool HasCaret() const;
 
   // True if this is a web area, and its grandparent is a presentational iframe.
   bool IsWebAreaForPresentationalIframe() const;
 
   bool IsControl() const;
   bool IsSimpleTextControl() const;
   // Indicates if this object is at the root of a rich edit text control.
   bool IsRichTextControl() const;
 
   // If an object is focusable but has no accessible name, use this
   // to compute a name from its descendants.
   std::string ComputeAccessibleNameFromDescendants();
 
  protected:
   BrowserAccessibility();
 
+  static void RGBAToColorValues(unsigned int color,
+                                unsigned int* red,
+                                unsigned int* green,
+                                unsigned int* blue,
+                                unsigned int* alpha);
+
   // The manager of this tree of accessibility objects.
   BrowserAccessibilityManager* manager_;
 
   // The underlying node.
   ui::AXNode* node_;
 
  private:
   // |GetInnerText| recursively includes all the text from descendants such as
   // text found in any embedded object. In contrast, |GetText| might include a
   // special character in the place of every embedded object instead of its
@@ skipping 10 matching lines @@
   // its nearest scrollable ancestor) to local bounds (which are relative
   // to the top of the web accessibility tree).
   gfx::Rect ElementBoundsToLocalBounds(gfx::Rect bounds) const;
 
   DISALLOW_COPY_AND_ASSIGN(BrowserAccessibility);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_ACCESSIBILITY_BROWSER_ACCESSIBILITY_H_