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PopupDemo.javaAPI DocExample2987Sun Dec 27 14:20:50 GMT 1998None

PopupDemo

public class PopupDemo extends Frame implements MouseListener, ActionListener

Fields Summary
Hashtable
popupTable
Constructors Summary
public PopupDemo()

		MenuBar mb = new MenuBar();
		setMenuBar(mb);
		Menu m = new Menu("file");
		mb.add(m);
		MenuItem item = new MenuItem("file-1");
		item.addActionListener(this);
		m.add(item);
		item = new MenuItem("file-2");
		m.add(item);

		setSize(100, 100);
		setLayout(new BorderLayout());

		Label l = new Label("label");
		addPopup(l, "label");
		add(l, "North");

		Panel p = new Panel();
		addPopup(p, "Panel");
		add(p, "Center");

		Button b = new Button("button");
		addPopup(b, "button");
		add(b, "South");
Methods Summary
public voidactionPerformed(java.awt.event.ActionEvent e)

		System.out.println("actionPerformed, event=" + e + ", mod=" + getMods(e));
		System.out.println(" command=" + e.getActionCommand());
		System.out.println(" param=" + e.paramString());
		System.out.println(" source=" + e.getSource());
voidaddPopup(java.awt.Component c, java.lang.String name)

    PopupMenu pm = new PopupMenu();
    MenuItem mi = new MenuItem(name + "-1");
    mi.addActionListener(this);
    pm.add(mi);

    mi = new MenuItem(name + "-2");
    pm.add(mi);

    setHash(c, pm);
    c.add(pm);
    c.addMouseListener(this);
java.awt.PopupMenugetHash(java.awt.Component c)

    return (PopupMenu)(popupTable.get(c));
java.lang.StringgetMods(java.awt.event.ActionEvent e)

 return getMods(e.getModifiers());
java.lang.StringgetMods(java.awt.event.MouseEvent e)

 return getMods(e.getModifiers());
java.lang.StringgetMods(int mods)

    String modstr = "";
    if ((mods & ActionEvent.SHIFT_MASK) == ActionEvent.SHIFT_MASK)
      modstr += (" SHIFT");
    if ((mods & ActionEvent.ALT_MASK) == ActionEvent.ALT_MASK)
      modstr += (" ALT");
    if ((mods & ActionEvent.CTRL_MASK) == ActionEvent.CTRL_MASK)
      modstr += (" CTRL");
    if ((mods & ActionEvent.META_MASK) == ActionEvent.META_MASK)
      modstr += (" META");
    return modstr;
public static voidmain(java.lang.String[] argv)

		new PopupDemo().setVisible(true);
voidmouseAction(java.lang.String which, java.awt.event.MouseEvent e)

    Component c = e.getComponent();
    System.out.println(which + "e=" + e + ", mods=" + getMods(e) +
                       ", component=" + c);
    if (e.isPopupTrigger()) {
      System.out.println("isPopup");
      PopupMenu pm = getHash(c);
      pm.show(c, c.getSize().width/2, c.getSize().height/2);
    }
public voidmouseClicked(java.awt.event.MouseEvent e)

    mouseAction("mouseClicked", e);
public voidmouseEntered(java.awt.event.MouseEvent e)
public voidmouseExited(java.awt.event.MouseEvent e)
public voidmousePressed(java.awt.event.MouseEvent e)

    mouseAction("mousePressed", e);
public voidmouseReleased(java.awt.event.MouseEvent e)

    mouseAction("mouseReleased", e);
voidsetHash(java.awt.Component c, java.awt.PopupMenu p)


       
    popupTable.put(c, p);