Index: content/browser/accessibility/browser_accessibility.h |
diff --git a/content/browser/accessibility/browser_accessibility.h b/content/browser/accessibility/browser_accessibility.h |
index 4f6b308619dc7983ae7d12d4d111ef9fa1b7dd7c..5d0c0a7c127e51ac0ea5be15d5e32bd099a8cd4a 100644 |
--- a/content/browser/accessibility/browser_accessibility.h |
+++ b/content/browser/accessibility/browser_accessibility.h |
@@ -112,18 +112,28 @@ class CONTENT_EXPORT BrowserAccessibility { |
// the role is WebAXRoleStaticText. |
gfx::Rect GetGlobalBoundsForRange(int start, int len) const; |
- // Searches in the given text and from the given offset until the start of |
- // the next or previous word is found and returns its position. |
+ // Starting at the given offset, searches through this object's text until the |
+ // beginning of the next or previous word is found and returns its position. |
// In case there is no word boundary before or after the given offset, it |
// returns one past the last character, i.e. the text's length. |
// If the given offset is already at the start of a word, returns the start |
- // of the next word if the search is forwards and the given offset if it is |
- // backwards. |
+ // of the next word if the search is forwards. It returns the given offset |
+ // if the search is backwards. |
// If the start offset is equal to -1 and the search is in the forwards |
- // direction, returns the start boundary of the first word. |
+ // direction, it returns the start boundary of the first word. |
// Start offsets that are not in the range -1 to text length are invalid. |
int GetWordStartBoundary( |
- int start, ui::TextBoundaryDirection direction) const; |
+ int offset, ui::TextBoundaryDirection direction) const; |
+ |
+ // Starting at the given offset, searches either forwards or backwards through |
+ // this object's text until it finds a change in text style. If the search is |
+ // in the forwards direction, it returns the start of the next style span. If |
+ // the search is in the backwards direction, it returns the start of the |
+ // current style span. |
+ // In case there is no style change after the given offset, it returns one |
+ // past the last character, i.e. the text's length. |
+ int GetStyleChangeBoundary( |
+ int offset, ui::TextBoundaryDirection direction) const; |
// Returns the deepest descendant that contains the specified point |
// (in global screen coordinates). |
@@ -265,6 +275,10 @@ class CONTENT_EXPORT BrowserAccessibility { |
protected: |
BrowserAccessibility(); |
+ // Returns the first deepest descendant that is an object with complete text |
+ // information. |
+ BrowserAccessibility* GetFirstTextLeaf() const; |
+ |
// The manager of this tree of accessibility objects. |
BrowserAccessibilityManager* manager_; |
@@ -272,10 +286,27 @@ class CONTENT_EXPORT BrowserAccessibility { |
ui::AXNode* node_; |
private: |
- // Return the sum of the lengths of all static text descendants, |
- // including this object if it's static text. |
+ // Returns true if the object is a leaf for purposes of text retrieval. |
+ bool IsTextLeaf() const; |
+ |
+ // Return the sum of the lengths of all text leaf descendants, |
+ // including this object if it's a text leaf. |
int GetStaticTextLenRecursive() const; |
+ // Returns the text leaf in which the given text offset lies and the offset |
+ // at which the leaf's text starts. |
+ BrowserAccessibility* GetTextLeafAtOffset(int offset, int* leaf_start_offset) const; |
+ |
+ // Returns the last deepest descendant that is an object with complete text |
+ // information. |
+ BrowserAccessibility* GetLastTextLeaf() const; |
+ |
+ // Returns the next object that is a text leaf, if any. |
+ BrowserAccessibility* GetNextTextLeaf() const; |
+ |
+ // Returns the previous object that is a text leaf, if any. |
+ BrowserAccessibility* GetPreviousTextLeaf() const; |
+ |
// Similar to GetParent(), but includes nodes that are the host of a |
// subtree rather than skipping over them - because they contain important |
// bounds offsets. |
@@ -286,6 +317,10 @@ class CONTENT_EXPORT BrowserAccessibility { |
// to the top of the web accessibility tree). |
gfx::Rect ElementBoundsToLocalBounds(gfx::Rect bounds) const; |
+ // Returns true if the two objects have the same text style attributes. |
+ static bool HaveSameStyle(BrowserAccessibility& object1, |
+ BrowserAccessibility& object2); |
+ |
DISALLOW_COPY_AND_ASSIGN(BrowserAccessibility); |
}; |