import javax.swing.JInternalFrame; import javax.swing.JDesktopPane; import javax.swing.JMenu; import javax.swing.JMenuItem; import javax.swing.JMenuBar; import javax.swing.JFrame; import javax.swing.KeyStroke; import java.awt.event.*; import java.awt.*; /* * InternalFrameDemo.java is a 1.4 application that requires: * MyInternalFrame.java */ public class InternalFrameDemo extends JFrame implements ActionListener { JDesktopPane desktop; public InternalFrameDemo() { super("InternalFrameDemo"); //Make the big window be indented 50 pixels from each edge //of the screen. int inset = 50; Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize(); setBounds(inset, inset, screenSize.width - inset*2, screenSize.height - inset*2); //Set up the GUI. desktop = new JDesktopPane(); //a specialized layered pane createFrame(); //create first "window" setContentPane(desktop); setJMenuBar(createMenuBar()); //Make dragging a little faster but perhaps uglier. desktop.setDragMode(JDesktopPane.OUTLINE_DRAG_MODE); } protected JMenuBar createMenuBar() { JMenuBar menuBar = new JMenuBar(); //Set up the lone menu. JMenu menu = new JMenu("Document"); menu.setMnemonic(KeyEvent.VK_D); menuBar.add(menu); //Set up the first menu item. JMenuItem menuItem = new JMenuItem("New"); menuItem.setMnemonic(KeyEvent.VK_N); menuItem.setAccelerator(KeyStroke.getKeyStroke( KeyEvent.VK_N, ActionEvent.ALT_MASK)); menuItem.setActionCommand("new"); menuItem.addActionListener(this); menu.add(menuItem); //Set up the second menu item. menuItem = new JMenuItem("Quit"); menuItem.setMnemonic(KeyEvent.VK_Q); menuItem.setAccelerator(KeyStroke.getKeyStroke( KeyEvent.VK_Q, ActionEvent.ALT_MASK)); menuItem.setActionCommand("quit"); menuItem.addActionListener(this); menu.add(menuItem); return menuBar; } //React to menu selections. public void actionPerformed(ActionEvent e) { if ("new".equals(e.getActionCommand())) { //new createFrame(); } else { //quit quit(); } } //Create a new internal frame. protected void createFrame() { MyInternalFrame frame = new MyInternalFrame(); frame.setVisible(true); //necessary as of 1.3 desktop.add(frame); try { frame.setSelected(true); } catch (java.beans.PropertyVetoException e) {} } //Quit the application. protected void quit() { System.exit(0); } /** * Create the GUI and show it. For thread safety, * this method should be invoked from the * event-dispatching thread. */ private static void createAndShowGUI() { //Make sure we have nice window decorations. JFrame.setDefaultLookAndFeelDecorated(true); //Create and set up the window. InternalFrameDemo frame = new InternalFrameDemo(); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); //Display the window. frame.setVisible(true); } public static void main(String[] args) { //Schedule a job for the event-dispatching thread: //creating and showing this application's GUI. javax.swing.SwingUtilities.invokeLater(new Runnable() { public void run() { createAndShowGUI(); } }); } }