/*
 * WindowSaver.java
 *
 * Created on November 22, 2006, 7:41 PM
 *
 * WindowSaver - uses a file to store the width, height, and x and y positions
 * and allows that same window to reload this information and this script will
 * change the window accordingly
 */

package games.stendhal.client.gui;

import java.awt.AWTEvent;
import java.awt.Dimension;
import java.awt.Toolkit;
import java.awt.event.AWTEventListener;
import java.awt.event.ActionEvent;
import java.awt.event.ComponentEvent;
import java.awt.event.WindowEvent;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;
import java.util.Properties;
import javax.swing.AbstractAction;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JMenu;
import javax.swing.JMenuBar;
import javax.swing.JOptionPane;

/**
 *
 * @author zenix
 */
public class WindowSaver implements AWTEventListener {
    
    private static WindowSaver saver;
    private Map framemap;
    public static String configFileName = "window.properties";
    private static File configFile = new File(configFileName);
    configFile.createNewFile();
    
    /** Creates a new instance of WindowSaver */
    public WindowSaver() {
        framemap = new HashMap();
    }
    
    public static WindowSaver getInstance() {
        if (saver == null) {
            saver = new WindowSaver();
        }
        return saver;
    }

    public void eventDispatched(AWTEvent event) {
        try {
            if(event.getID() == WindowEvent.WINDOW_OPENED) {
                ComponentEvent cev = (ComponentEvent)event;
                if (cev.getComponent() instanceof JFrame) {
                    JFrame frame = (JFrame)cev.getComponent();
                    loadSettings(frame);
                }
            }
        } catch (Exception ex) {
            JOptionPane.showMessageDialog(new JFrame(), ex.toString(),
                                          "Exception occured", JOptionPane.ERROR_MESSAGE);
        }
    }
    
    public static void loadSettings(JFrame frame) throws IOException {
        Properties settings = new Properties();
        settings.load(new FileInputStream(configFile));
        String name = frame.getName();
        int x = getInt(settings, name+".x", 100);
        int y = getInt(settings, name+".y", 100);
        int h = getInt(settings, name+".h", 500);
        int w = getInt(settings, name+".w", 500);
        frame.setLocation(x,y);
        frame.setSize(new Dimension(w,h));
        saver.framemap.put(name,frame);
        frame.validate();
    }
    
    public static int getInt(Properties props, String name, int value) {
        String v = props.getProperty(name);
        if (v == null) {
            return value;
        }
        return Integer.parseInt(v);
    }
    
    public static void saveSettings() throws IOException {
        Properties settings = new Properties();
        settings.load(new FileInputStream(configFile));
        
        Iterator it = saver.framemap.keySet().iterator();
        while (it.hasNext()) {
            String name = (String)it.next();
            JFrame frame = (JFrame)saver.framemap.get(name);
            settings.setProperty(name+".x", ""+frame.getX());
            settings.setProperty(name+".y", ""+frame.getY());
            settings.setProperty(name+".h", ""+frame.getHeight());
            settings.setProperty(name+".w", ""+frame.getWidth());
        }
        settings.store(new FileOutputStream("configuration.props"), null);
    }
    
    public static void main(String[] args) throws Exception {
         Toolkit tk = Toolkit.getDefaultToolkit();
         tk.addAWTEventListener(WindowSaver.getInstance(), AWTEvent.WINDOW_EVENT_MASK);
         
         final JFrame frame = new JFrame("WindowSaver");
         frame.setName("WSTes.main");
         frame.getContentPane().add(new JButton("move my window anywhere\nand make it any size! It'll remember!"));
         JMenuBar mb = new JMenuBar();
         JMenu menu = new JMenu("File");
         menu.add(new AbstractAction("Quit") {
             public void actionPerformed(ActionEvent evt) {
                 try {
                     WindowSaver.saveSettings();
                     System.exit(0);
                 } catch(Exception ex) {
                     System.out.println(ex);
                     
                 }
             }
         });
         mb.add(menu);
         frame.setJMenuBar(mb);
         frame.pack();
         frame.setVisible(true);
    }
}