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

public/web/WebAXObject.h

 /*
  * Copyright (C) 2009 Google 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 139 matching lines @@
     // Only used when invalidState() returns WebAXInvalidStateOther.
     BLINK_EXPORT WebString ariaInvalidValue() const;
     BLINK_EXPORT double estimatedLoadingProgress() const;
     BLINK_EXPORT int headingLevel() const;
     BLINK_EXPORT int hierarchicalLevel() const;
     BLINK_EXPORT WebAXObject hitTest(const WebPoint&) const;
     BLINK_EXPORT WebString keyboardShortcut() const;
     BLINK_EXPORT WebString language() const;
     BLINK_EXPORT WebAXOrientation orientation() const;
     BLINK_EXPORT WebAXRole role() const;
+    BLINK_EXPORT void selection(unsigned* anchorID, unsigned* anchorOffset, unsigned* focusId, unsigned* focusOffset) const;

[dmazzoni, 2015/06/16 17:24:04]

Put this in its own block with a comment like "Can be called on any object,
applies to the whole document. Later maybe we should have a separate AX
interface for a document."

To be consistent with the rest of the interface, return WebAXObjects for the
anchor and focus, not IDs.

To be consistent with Blink style, use references, not pointers.

     BLINK_EXPORT unsigned selectionEnd() const;
     BLINK_EXPORT unsigned selectionEndLineNumber() const;
     BLINK_EXPORT unsigned selectionStart() const;
     BLINK_EXPORT unsigned selectionStartLineNumber() const;
     BLINK_EXPORT WebString stringValue() const;
     BLINK_EXPORT WebAXTextDirection textDirection() const;
     BLINK_EXPORT WebAXTextStyle textStyle() const;
     BLINK_EXPORT WebURL url() const;
 
     // Deprecated text alternative calculation API. All of these will be replaced
@@ skipping 135 matching lines @@
     operator WTF::PassRefPtr<AXObject>() const;
 #endif
 
 private:
     WebPrivatePtr<AXObject> m_private;
 };
 
 } // namespace blink
 
 #endif