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"Using The New Event Model"
Vol. 2, Issue 1, p. 53

	

Listing 1

public class PushButton extends Panel {
    private Button m_button = new Button();
    private Vector m_vectListeners = new Vector();

    public PushButton() { this(""); }
    public PushButton(String title) {
        m_button = new Button(title);
        setLayout(new BorderLayout());
        add("Center", m_button);
    }

    public boolean action(Event evt, Object what) {
        Enumeration enum = m_vectListener.elements();
        While(enum.hasMoreElements())
            ((PushButtonListener)enum.nextElement()).push(this);
    }

 public addPushButtonListener(PushButtonListener target) {
        m_vectListener.addElement(target);
    }

    public removePushButtonListener(PushButtonListener target) {
        m_vectListener.removeElement(target);
    }
}

 

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