/*
This file is part of RouteConverter.
RouteConverter is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
RouteConverter is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with RouteConverter; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
Copyright (C) 2007 Christian Pesch. All Rights Reserved.
*/
package slash.navigation.gui.actions;
import slash.navigation.gui.SimpleDialog;
/**
* Show a dialog at most once.
*
* @author Christian Pesch
*/
public abstract class SingletonDialogAction extends FrameAction {
private SimpleDialog dialog = null;
protected abstract SimpleDialog createDialog();
public void run() {
if (dialog == null) {
dialog = createDialog();
dialog.pack();
dialog.restoreLocation();
}
if (!dialog.isVisible()) {
dialog.toFront();
dialog.setVisible(true);
}
}
}