import java.awt.event.* ; import java.awt.* ; import java.net.* ; public class WindowBar extends Panel implements ActionListener { public WindowBar() { super() ; _closer = new Button( "Collapse" ) ; _closer.addActionListener( this ); //setLayout( new BorderLayout() ); //add( "East", _closer ); Panel p = new Panel() ; p.add( _closer ) ; add( p ) ; } public void addCollapseListener( PaneSwitchListener l ) { _collapseListener = MyMulticaster.add( _collapseListener, l ) ; } public void actionPerformed( ActionEvent e ) { if ( _collapseListener == null ) return ; if ( _collapsed ) { _collapseListener.restore( new PaneSwitchEvent( this, PaneSwitchEvent.RESTORE )); _closer.setLabel( "Collapse" ) ; } else { _collapseListener.collapse( new PaneSwitchEvent( this, PaneSwitchEvent.COLLAPSE )); _closer.setLabel( "restore" ) ; } _collapsed = !_collapsed ; } private boolean _collapsed = false ; private PaneSwitchListener _collapseListener = null ; private Button _closer ; }