保存窗口设置信息代码,Java代码库,德仔网

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【Java】保存窗口设置信息
作者:DDT / 发布于2012/6/25/ 527
<div> public class WindowSaver implements AWTEventListener {</div>
<div> private static WindowSaver saver;
 private Map framemap;
 
private WindowSaver( ) {
 framemap = new HashMap( );
 }
<div> public static WindowSaver getInstance( ) {
 if(saver == null) {
 saver = new WindowSaver( );
 }
 return saver;
 Toolkit tk = Toolkit.getDefaultToolkit( );
 tk.addAWTEventListener(WindowSaver.getInstance( ),
 AWTEvent.WINDOW_EVENT_MASK);
 public void eventDispatched(AWTEvent evt) {
 try {
 if(evt.getID( ) == WindowEvent.WINDOW_OPENED) {
 ComponentEvent cev = (ComponentEvent)evt;
 if(cev.getComponent( ) instanceof JFrame) {
 JFrame frame = (JFrame)cev.getComponent( );
 loadSettings(frame);
 }
 }
 }catch(Exception ex) {
 p(ex.toString( ));
 }
 }
 public static void loadSettings(JFrame frame) throws IOException {
 Properties settings = new Properties( );
 settings.load(new FileInputStream("configuration.props"));
 String name = frame.getName( );
 int x = getInt(settings,name+".x",100);
 int y = getInt(settings,name+".y",100);
 int w = getInt(settings,name+".w",500);
 int h = getInt(settings,name+".h",500);
 frame.setLocation(x,y);
 frame.setSize(new Dimension(w,h));
 saver.framemap.put(name,frame);
 frame.validate( );
 }
<div>public static int getInt(Properties props, String name, int value) { 
String v = props.getProperty(name); 
if(v == null) {
return value;
}
return Integer.parseInt(v);</div>
<div>}
<div> file.add(new AbstractAction("Quit") {
 public void actionPerformed(ActionEvent evt) {
 try {
 WindowSaver.saveSettings( );
 System.exit(0);
 } catch (Exception ex) {
 System.out.println(ex);
 }
 }
 });
 public static void saveSettings( ) throws IOException {
 Properties settings = new Properties( );
 settings.load(new FileInputStream("configuration.props"));</div>
<div> 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+".w",""+frame.getWidth( )); 
 settings.setProperty(name+".h",""+frame.getHeight( ));
 } 
 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);</div>
<div> final JFrame frame = new JFrame("Hack X");
 frame.setName("WSTes.main");
 frame.getContentPane( ).add(new JButton("a button"));
 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);
 }
<div> }
 });
 mb.add(menu);
 frame.setJMenuBar(mb);
 frame.pack( );
 frame.show( );
 }
 }
</div>
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