void () { int[] rows = myTree.getSelectionRows(); boolean multiSelection = rows != null && rows.length > 1; myEmptyCardLabel.setText(multiSelection ? CodeInsightBundle.message("templates.list.multiple.live.templates.are.selected") : CodeInsightBundle.message("templates.list.no.live.templates.are.selected")); ((CardLayout) myDetailsPanel.getLayout()).show(myDetailsPanel, NO_SELECTION); }