mindswap/utils/SwingUtils.java

/*
 * Created on Oct 30, 2004
 */
package org.mindswap.utils;

import java.awt.Component;
import java.awt.Dimension;
import java.awt.Toolkit;
import java.awt.Window;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

import javax.swing.BoxLayout;
import javax.swing.JButton;
import javax.swing.JComponent;
import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;

/**
 * @author Evren Sirin
 */
public class SwingUtils {
    public final static ActionListener windowCloserAction = new ActionListener() {
        public void actionPerformed(ActionEvent e) {
            JComponent c = (JComponent) e.getSource();
            Window w = (Window) c.getTopLevelAncestor();
            w.dispose();
        }
    };

    public static void centerFrame(Window frame) {
        Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize();
        Dimension size = frame.getSize();
        screenSize.height = screenSize.height/2;
        screenSize.width = screenSize.width/2;
        size.height = size.height/2;
        size.width = size.width/2;
        int y = screenSize.height - size.height;
        int x = screenSize.width - size.width;

        frame.setLocation(x, y);
    }


    public static void showMessage(String title, String str) {
        JFrame info = new JFrame(title);
        JTextArea t = new JTextArea(str, 15, 40);
        t.setEditable(false);
        t.setLineWrap(true);
        t.setWrapStyleWord(true);
        JButton ok = new JButton("Close");
        ok.addActionListener(windowCloserAction);
        info.getContentPane().setLayout(new BoxLayout(info.getContentPane(), BoxLayout.Y_AXIS));
        info.getContentPane().add(new JScrollPane(t));
        info.getContentPane().add(ok);
        ok.setAlignmentX(Component.CENTER_ALIGNMENT);
        info.pack();
        //info.setResizable(false);
        centerFrame(info);
        //info.show();
        info.setVisible(true);
    }
}