void () { if (myFirstInsertFeedback == null) { FeedbackLayer layer = myContext.getArea().getFeedbackLayer(); myBounds = myContainer.getBounds(layer); createFirstInsertFeedback(); createInsertFeedback(); if (getChildren().isEmpty()) { layer.add(myFirstInsertFeedback); } else { layer.add(myInsertFeedback); } layer.repaint(); } }