Bug 33260 [keybinding] Need to update plugin.xml action declarations with new scheme
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/javaeditor/JavaEditor.java
StyledText text= viewer.getTextWidget();
			if (text == null || text.isDisposed())
				return;
				
				
			int offset= 0;
			int length= 0;
			if (viewer instanceof ITextViewerExtension3) {
				
				ITextViewerExtension3 extension= (ITextViewerExtension3) viewer;
				IRegion widgetRange= extension.modelRange2WidgetRange(new Region(offset, length));
				if (widgetRange == null)
					return;
					
				offset= widgetRange.getOffset();
				length= widgetRange.getLength();
				
			} else {
				
			IRegion region= viewer.getVisibleRegion();			
			if (!includes(region, fActiveRegion))
			 	return;		    
				offset= fActiveRegion.getOffset() - region.getOffset();
				length= fActiveRegion.getLength();
			}
			
			
			Point minLocation= getMinimumLocation(text, offset, length);
			Point maxLocation= getMaximumLocation(text, offset, length);