Implements the ability to get and set the caret position and the current selection from anywhere in…

Source/modules/accessibility/AXLayoutObject.h

Index: Source/modules/accessibility/AXLayoutObject.h
diff --git a/Source/modules/accessibility/AXLayoutObject.h b/Source/modules/accessibility/AXLayoutObject.h
index d9f6af988cf90d2254ad4561ed8bc5392b3d99b1..32d8a692ba726e7b3bc2e1d6f7b56743b4ece921 100644
--- a/Source/modules/accessibility/AXLayoutObject.h
+++ b/Source/modules/accessibility/AXLayoutObject.h
@@ -182,12 +182,11 @@ protected:
     virtual FrameView* documentFrameView() const override;
     virtual Element* anchorElement() const override;
     virtual Widget* widgetForAttachmentView() const override;
-
-    // Selected text.
-    virtual PlainTextRange selectedTextRange() const override;
+    virtual AXSelection selection() const override;

[dmazzoni, 2015/06/16 17:24:03]

These should all be in their own section with comments indicating that they
apply to the whole document, or the subtree, etc.

+    virtual AXSelection selectionUnderObject() const override;
 
     // Modify or take an action on an object.
-    virtual void setSelectedTextRange(const PlainTextRange&) override;
+    virtual void setSelection(const AXSelection&) override;
     virtual void setValue(const String&) override;
 
     // Notifications that this object may have changed.
@@ -203,7 +202,6 @@ protected:
 private:
     AXObject* treeAncestorDisallowingChild() const;
     void ariaListboxSelectedChildren(AccessibilityChildrenVector&);
-    PlainTextRange visibleSelectionUnderObject() const;
     bool nodeIsTextControl(const Node*) const;
     bool isTabItemSelected() const;
     AXObject* accessibilityImageMapHitTest(HTMLAreaElement*, const IntPoint&) const;
@@ -225,7 +223,8 @@ private:
     void ariaSelectedRows(AccessibilityChildrenVector&);
     bool elementAttributeValue(const QualifiedName&) const;
     LayoutRect computeElementRect() const;
-    VisibleSelection selection() const;
+    AXObject::AXSelection textControlSelection() const;

[dmazzoni, 2015/06/16 17:24:03]

The AXObject:: qualifier shouldn't be needed here

+    VisibleSelection visibleSelection() const;
     int indexForVisiblePosition(const VisiblePosition&) const;
 };