question: private void renderForeground ( final ExecutionUnit process , final Graphics2D g2 , boolean printing ) { if ( drawHighlight && ! printing && ( model . isDragStarted ( ) || model . isDropTargetSet ( ) && model . isImportDragged ( ) ) || model . isOperatorSourceHovered ( ) ) { switch ( RapidMinerGUI . getDragHighlighteMode ( ) ) { case FULL : case BORDER : drawDragBorder ( process , g2 ) ; break ; case NONE : default : break ; } } }
target:  Renders the drag border if needed.