demo.java

来自「linux下建立JAVA虚拟机的源码KAFFE」· Java 代码 · 共 629 行 · 第 1/2 页

  private static JScrollPane mkScrollPane(JComponent inner)
  {
    JScrollPane jsp;
    jsp = new JScrollPane(inner,
			  JScrollPane.VERTICAL_SCROLLBAR_AS_NEEDED, 
			  JScrollPane.HORIZONTAL_SCROLLBAR_AS_NEEDED);
    
    return jsp;
  }

  public Demo()
  {
    frame = new JFrame("Swing Activity Board");
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    frame.setJMenuBar(mkMenuBar());
    JComponent component = (JComponent) frame.getContentPane();
    component.setLayout(new BorderLayout());
    component.add(mkToolBar(), BorderLayout.NORTH);
    JPanel main = new JPanel();
    main.setLayout(new BoxLayout(main, BoxLayout.Y_AXIS));
    desktop = createDesktop();
    main.add(desktop);
    main.add(mkButtonBar());
    component.add(main, BorderLayout.CENTER);
    frame.pack();
    frame.show();
  }

  public static class LaterMain
    implements Runnable
  {
    public void run()
    {
      Demo demo = new Demo();      
    }
  }

  public static void main(String args[])
  {
    SwingUtilities.invokeLater(new LaterMain());
  }

  private static JButton mkBigButton(String title)
  {
    JButton b = new JButton(title);
    b.setMargin(new Insets(5,5,5,5));
    return b;
  }

  private static JPanel mkPanel(JComponent[] inners)
  {
    JPanel p = new JPanel();
    for (int i = 0; i < inners.length; ++i)
      {
        p.add(inners[i]);
      }
    return p;
  }

  static JButton mkDisposerButton(final JFrame c)
  {
    JButton close = mkBigButton("Close");
    close.addActionListener(new ActionListener()
      {
        public void actionPerformed(ActionEvent e)
        {
          c.dispose();
        }
      });
    return close;
  }

  public static JColorChooser mkColorChooser()
  {
    return new JColorChooser();
  }

  /**
   * This action brings up a new Window with the specified content.
   */
  private class PopupAction
    extends AbstractAction
  {
    /**
     * The component to be shown.
     */
    private DemoFactory demoFactory;

    /**
     * Creates a new PopupAction with the specified name and showing the
     * component created by the specified DemoFactory when activated.
     *
     * @param n the name of the action
     * @param factory the demo factory
     */
    PopupAction(String n, DemoFactory factory)
    {
      putValue(NAME, n);
      demoFactory = factory;
    }

    /**
     * Brings up the new window showing the component stored in the
     * constructor.
     *
     * @param e the action event that triggered the action
     */
    public void actionPerformed(ActionEvent e)
    {
      JInternalFrame frame = new JInternalFrame((String) getValue(NAME));
      frame.setClosable(true);
      frame.setIconifiable(true);
      frame.setMaximizable(true);
      frame.setResizable(true);
      frame.setContentPane(demoFactory.createDemo());
      frame.pack();
      desktop.add(frame);
      frame.setVisible(true);
    }
  }

  /**
   * Create the tree.
   * 
   * @return thr scroll pane, containing the tree.
   */
  private static JComponent mkTree()
  {
    DefaultMutableTreeNode root = new DefaultMutableTreeNode("Root node");
    
    addChildren("Node", root, 12);

    JTree tree = new JTree(root);
    tree.setLargeModel(true);
    DefaultTreeSelectionModel dtsm = new DefaultTreeSelectionModel();
    dtsm.setSelectionMode(DefaultTreeSelectionModel.SINGLE_TREE_SELECTION);
    tree.setSelectionModel(dtsm);
    
    // Make it editable.
    tree.setEditable(true);
    
    JComponent t = mkScrollPane(tree);
    t.setPreferredSize(new Dimension(200,200));
    return t;
  }
  
  /**
   * Add the specified number of children to this parent node. For each
   * child, the method is called recursively adding the nChildren-3 number of 
   * grandchildren.
   * 
   * @param parent the parent node
   * @param nChildren the number of children
   */
  private static void addChildren(String name, DefaultMutableTreeNode parent,
                                                int nChildren)
  {
    for (int i = 0; i < nChildren; i++)
      {
        String child_name = parent+"."+i;
        DefaultMutableTreeNode child = new DefaultMutableTreeNode
         (child_name);
        parent.add(child);
        addChildren(child_name, child, nChildren-3);
      }
  }
  
  private JPanel mkButtonBar()
  {    
    JPanel panel = new JPanel(new GridLayout(3, 1, 5, 5));
    panel.add(new JButton(new PopupAction("Buttons",
                                          ButtonDemo.createDemoFactory())));
    panel.add(new JButton(new PopupAction("Slider",
                                          SliderDemo.createDemoFactory())));
    panel.add(new JButton(new PopupAction("ProgressBar",
                                        ProgressBarDemo.createDemoFactory())));
    panel.add(new JButton(new PopupAction("ScrollBar",
                                          ScrollBarDemo.createDemoFactory())));
    panel.add(new JButton(new PopupAction("Spinner",
                                          SpinnerDemo.createDemoFactory())));
    panel.add(new JButton(new PopupAction("TextField",
                                          TextFieldDemo.createDemoFactory())));
    panel.add(new JButton(new PopupAction("TextArea",
                                          TextAreaDemo.createDemoFactory())));
    panel.add(new JButton(new PopupAction("FileChooser",
                                        FileChooserDemo.createDemoFactory())));
    panel.add(new JButton(new PopupAction("ComboBox",
                                          ComboBoxDemo.createDemoFactory())));
    panel.add(new JButton(new PopupAction("Table",
                                          TableDemo.createDemoFactory())));
    panel.add(new JButton(new PopupAction("List",
                                          ListDemo.createDemoFactory())));
    panel.add(new JButton(new PopupAction("TabbedPane",
                                         TabbedPaneDemo.createDemoFactory())));
    panel.add(new JButton(new PopupAction("Tree",
                                          TreeDemo.createDemoFactory())));
    panel.add(new JButton(new PopupAction("Theme Editor",
                                       MetalThemeEditor.createDemoFactory())));
    JButton exitDisposer = mkDisposerButton(frame);
    panel.add(exitDisposer);
    
    panel.setMaximumSize(new Dimension(Integer.MAX_VALUE, 
                                       panel.getPreferredSize().height));
    exitDisposer.addActionListener(new ActionListener()
      {
	public void actionPerformed(ActionEvent e)
	{
	  System.exit(1);
	}
      });
    return panel;
  }

  /**
   * Creates and returns the main desktop.
   *
   * @return the main desktop
   */
  private JDesktopPane createDesktop()
  {
    JDesktopPane d = new DemoDesktop();
    d.setPreferredSize(new Dimension(900, 500));
    return d;
  }

  /**
   * This Action is used to switch Metal themes.
   */
  class ChangeThemeAction extends AbstractAction
  {
    /**
     * The theme to switch to.
     */
    MetalTheme theme;

    /**
     * Creates a new ChangeThemeAction for the specified theme.
     *
     * @param t the theme to switch to
     */
    ChangeThemeAction(MetalTheme t)
    {
      theme = t;
      putValue(NAME, t.getName());
    }

    /**
     * Changes the theme to the one specified in the constructor.
     *
     * @param event the action event that triggered this action
     */
    public void actionPerformed(ActionEvent event)
    {
      MetalLookAndFeel.setCurrentTheme(theme);
      try
        {
          // Only switch theme if we have a metal L&F. It is still necessary
          // to install a new MetalLookAndFeel instance.
          if (UIManager.getLookAndFeel() instanceof MetalLookAndFeel)
            UIManager.setLookAndFeel(new MetalLookAndFeel());
        }
      catch (UnsupportedLookAndFeelException ex)
        {
          ex.printStackTrace();
        }
      SwingUtilities.updateComponentTreeUI(frame);
    }
    
  }

  /**
   * This Action is used to switch Metal themes.
   */
  class ChangeLAFAction extends AbstractAction
  {
    /**
     * The theme to switch to.
     */
    private UIManager.LookAndFeelInfo laf;

    /**
     * Creates a new ChangeLAFAction for the specified L&F.
     *
     * @param l the L&F to switch to
     */
    ChangeLAFAction(UIManager.LookAndFeelInfo l)
    {
      laf = l;
      putValue(NAME, laf.getName());
    }

    /**
     * Changes the theme to the one specified in the constructor.
     *
     * @param event the action event that triggered this action
     */
    public void actionPerformed(ActionEvent event)
    {
      try
        {
          UIManager.setLookAndFeel(laf.getClassName());
        }
      catch (Exception ex)
        {
          ex.printStackTrace();
        }
      SwingUtilities.updateComponentTreeUI(frame);
      themesMenu.setEnabled(laf.getClassName()
                           .equals("javax.swing.plaf.metal.MetalLookAndFeel"));
    }
    
  }
}