/* ExtraFrame.java */import java.awt.*;import java.applet.*;public class ExtraFrame extends Frame {		AlgAnimFrame parentApp;	LegendPanel legend_panel;		public ExtraFrame( AlgAnimFrame parentApp ) {		this.parentApp = parentApp;		setTitle(parentApp.algname);				// for the legend window		int num = 4;		Color collection[];		String set[];		int width = 250, height = 200;				// generate the legend in a new window		collection = new Color[num];		set = new String[num];				collection = Generate_Colour_Data( collection );		set = Generate_String_Data( set );		legend_panel = new LegendPanel(collection, set, num);		//Arrange panels within frame		/*		GridBagLayout gb = new GridBagLayout();		GridBagConstraints gc = new GridBagConstraints();		setLayout( gb );				gc.fill = GridBagConstraints.BOTH;		gc.gridwidth = GridBagConstraints.REMAINDER;		gc.gridheight = GridBagConstraints.REMAINDER;		gc.gridx = 0; gc.gridy = 0;		gb.setConstraints( legend_panel, gc );		*/		setLayout( new BorderLayout() );		add("Center", legend_panel );				//	pack();		validate();		resize(width, height);		show();		}		public boolean handleEvent(Event event) {		if (event.id == Event.WINDOW_DESTROY) {			dispose();			}		return super.handleEvent(event);		}		public void Remove_Window( ) {		dispose();		}		private Color[] Generate_Colour_Data( Color[] collection ) {		collection[0] = Color.blue;		collection[1] = Color.black;		collection[2] = Color.yellow;		collection[3] = Color.red;		return collection;		}		private String[] Generate_String_Data( String[] set ) {		set[0] = "Original Node Colour";		set[1] = "Original Edge Colour";		set[2] = "Node/Edge In Focus";		set[3] = "Node/Edge Chosen";		return set;		}		}