Expose the selection root bounds in WebView.

public/web/WebWidget.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 176 matching lines @@
     // returns false on failure.
     virtual bool compositionRange(size_t* location, size_t* length) { return false; }
 
     // Returns information about the current text input of this WebWidget.
     virtual WebTextInputInfo textInputInfo() { return WebTextInputInfo(); }
 
     // Returns the anchor and focus bounds of the current selection.
     // If the selection range is empty, it returns the caret bounds.
     virtual bool selectionBounds(WebRect& anchor, WebRect& focus) const { return false; }
 
+    // Compute the bounds of the root element of the current selection and fills
+    // the out-parameter on success. |bounds| coordinate will be relative to the

[timvolodine, 2014/03/05 19:41:02]

coordinate -> coordinates

[mlamouri (slow - plz ping), 2014/03/06 13:45:31]

Done.

+    // contents window and will take into account the current scale level.
+    // Returns false if there is no selection or on failure.

[timvolodine, 2014/03/05 19:41:02]

what does failure mean here? instead maybe better to say something like: "when
there is no underlying editable element"?

[mlamouri (slow - plz ping), 2014/03/06 13:45:31]

You can have a selection even though there is no editable element. I removed
"failure" and just kept "no selection".

+    virtual bool selectionRootBounds(WebRect& bounds) const { return false; }
+
     // Called to notify that IME candidate window has changed its visibility or
     // its appearance. These calls correspond to trigger
     // candidatewindow{show,update,hide} events defined in W3C IME API.
     virtual void didShowCandidateWindow() { }
     virtual void didUpdateCandidateWindow() { }
     virtual void didHideCandidateWindow() { }
 
     // Returns the text direction at the start and end bounds of the current selection.
     // If the selection range is empty, it returns false.
     virtual bool selectionTextDirection(WebTextDirection& start, WebTextDirection& end) const { return false; }
@@ skipping 44 matching lines @@
     // content.
     virtual WebColor backgroundColor() const { return 0xFFFFFFFF; /* SK_ColorWHITE */ }
 
 protected:
     ~WebWidget() { }
 };
 
 } // namespace blink
 
 #endif