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

Source/modules/accessibility/AXLayoutObject.h

 /*
  * Copyright (C) 2008 Apple Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
  * 2.  Redistributions in binary form must reproduce the above copyright
@@ skipping 164 matching lines @@
 
     // Properties of the object's owning document or page.
     virtual double estimatedLoadingProgress() const override;
 
     // DOM and layout tree access.
     virtual Node* node() const override;
     virtual Document* document() const override;
     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.
     virtual void handleActiveDescendantChanged() override;
     virtual void handleAriaExpandedChanged() override;
     virtual void textChanged() override;
 
     // Text metrics. Most of these should be deprecated, needs major cleanup.
     virtual int index(const VisiblePosition&) const override;
     virtual VisiblePosition visiblePositionForIndex(int) const override;
     virtual void lineBreaks(Vector<int>&) const override;
 
 private:
     AXObject* treeAncestorDisallowingChild() const;
     void ariaListboxSelectedChildren(AccessibilityChildrenVector&);
-    PlainTextRange visibleSelectionUnderObject() const;
     bool nodeIsTextControl(const Node*) const;
     bool isTabItemSelected() const;
     AXObject* accessibilityImageMapHitTest(HTMLAreaElement*, const IntPoint&) const;
     LayoutObject* layoutParentObject() const;
     bool isSVGImage() const;
     void detachRemoteSVGRoot();
     AXSVGRoot* remoteSVGRootElement() const;
     AXObject* remoteSVGElementHitTest(const IntPoint&) const;
     void offsetBoundingBoxForRemoteSVGElement(LayoutRect&) const;
     void addHiddenChildren();
     void addTextFieldChildren();
     void addImageMapChildren();
     void addCanvasChildren();
     void addAttachmentChildren();
     void addPopupChildren();
     void addRemoteSVGChildren();
     void addInlineTextBoxChildren(bool force);
 
     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;
 };
 
 DEFINE_AX_OBJECT_TYPE_CASTS(AXLayoutObject, isAXLayoutObject());
 
 } // namespace blink
 
 #endif // AXLayoutObject_h