package com.macmillan.nmeyers;
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.io.*;

/*
 * SaveDialog.java: Part of the PerfAnal tool
 *
 * This class implements a dialog for saving a data analysis file.
 *
 * Author: Nathan Meyers, nmeyers@javalinux.net
 * $Id: SaveDialog.java,v 1.3 1999/11/10 03:36:14 nathanm Exp $
 *
 * This program 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, or (at your option)
 * any later version.
 *
 * This program 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
 * with this program. If not, the license is available from the
 * GNU project, at http://www.gnu.org.
 */

class SaveDialog extends JDialog
{
    JFrame parent;
    DoSave doSave;
    File file;
    SaveDialog(JFrame frame, DoSave ds)
    {
	super(frame, "Save Analysis Data to a File", true);
	parent = frame;
	doSave = ds;
	JFileChooser fileChooser = new JFileChooser() {
	    public void approveSelection()
	    {
		file = getSelectedFile();
		dispose();
		if (file.exists()) new ApproveSaveFile(parent);
		else doSave.doSave(file);
	    }
	    public void cancelSelection()
	    {
		dispose();
	    }
	};
	fileChooser.setDialogType(JFileChooser.SAVE_DIALOG);
	getContentPane().add(fileChooser);
	pack();
	setVisible(true);
    }
    interface DoSave
    {
	void doSave(File f);
    }
    class ApproveSaveFile extends JDialog
    {
	ApproveSaveFile(JFrame p)
	{
	    super(p, "Overwrite File?", true);
	    getContentPane().add(new JLabel("Overwrite file " + file + "?"),
				 BorderLayout.CENTER);
	    Box box = Box.createHorizontalBox();
	    getContentPane().add(box, BorderLayout.SOUTH);
	    box.add(Box.createGlue());
	    JButton button = new JButton("OK");
	    button.addActionListener(new ActionListener() {
		public void actionPerformed(ActionEvent e)
		{
		    dispose();
		    doSave.doSave(file);
		}
	    });
	    box.add(button);
	    box.add(Box.createGlue());
	    button = new JButton("Cancel");
	    button.addActionListener(new ActionListener() {
		public void actionPerformed(ActionEvent e)
		{
		    dispose();
		}
	    });
	    box.add(button);
	    getRootPane().setDefaultButton(button);
	    box.add(Box.createGlue());
	    pack();
	    setDefaultCloseOperation(WindowConstants.DISPOSE_ON_CLOSE);
	    setVisible(true);
	}
    }
}