private void moveItemUp() { int index = menuItemsTable.getSelectedRow(); // Return if nothing was selected. if (index == -1) return; // Return if the first item is selected. if (index == 0) return; nodeAttributesDialog.moveParameterItemUp(parameter, index); // TODO: Changing the selection doesn't have any effect on Mac. menuItemsTable.changeSelection(index - 1, 1, false, false); }