/*
 * JDK 1.1.5
*/

import java.awt.*;
import java.awt.event.*;

public class EventCode implements ActionListener, ItemListener{

    Panel cards;
    TextField tfield = new TextField("Enter name:", 20);
    TextField name = new TextField("Name:", 25);
    TextField addr = new TextField("Address:", 25);

    Button cancel = new Button("Cancel");
    Button OK = new Button("OK");
    Button quit = new Button("Quit");
    Button reset = new Button("Reset");
    Button two = new Button("2 cols.");
    Button three = new Button("3 cols.");
    Button four = new Button("4 cols.");

    LayoutExample window;

    public EventCode(LayoutExample window) {
	System.out.println("EventCode constructor");
	this.window=window;
        window.border.addActionListener(this);
        window.flow.addActionListener(this);
        window.card.addActionListener(this);
        window.grid.addActionListener(this);
        window.gridBag.addActionListener(this);
        OK.addActionListener(this);
        cancel.addActionListener(this);
        name.addActionListener(this);
        addr.addActionListener(this);

        window.addWindowListener(new WindowAdapter(){
           public void windowClosing(WindowEvent event){
                        System.exit(0);
           }
        });

   }

   public void actionPerformed(ActionEvent event){

        Object source = event.getSource();

        if( source == OK){
                window.p2.removeAll();
                window.p2.setLayout(new FlowLayout());
                window.p2.add(new Label("<--  Select a layout to view ..."));
                window.p2.validate();
        }

        if( source == cancel){
                window.p2.removeAll();
                gridBag();
                window.p2.validate();
        }

        if(source == two){
                window.p2.removeAll();
                window.p2.setLayout(new GridLayout(0,2));
                window.p2.add(two);
                window.p2.add(three);
                window.p2.add(four);
                window.p2.add(OK);
                window.p2.validate();
        }

        if( source == three){
                window.p2.removeAll();
                window.p2.setLayout(new GridLayout(0,3));
                window.p2.add(two);
                window.p2.add(three);
                window.p2.add(four);
                window.p2.add(OK);
                window.p2.validate();
        }

        if( source == four){
                window.p2.removeAll();
                window.p2.setLayout(new GridLayout(0,4));
                window.p2.add(two);
                window.p2.add(three);
                window.p2.add(four);
                window.p2.add(OK);
                window.p2.validate();
        }

        if( source == tfield){
                window.p2.removeAll();
                window.p2.setLayout(new FlowLayout());
                window.p2.add(new Label("<--  Select a layout to view ..."));
                window.p2.validate();
        }

        if( source == window.border){
		System.out.println("Border");
                window.p2.removeAll();
                window.p2.setLayout(new BorderLayout());

                Label dialogLabel = new Label();
                dialogLabel.setAlignment(Label.CENTER);
                dialogLabel.setText("Border Layout");

                List items = new List(6, true);
                items.add("Apple tree");
                items.add("Orange tree");
                items.add("Pear tree");
                items.add("Peach tree");
                items.add("Cherry tree");
                items.add("Apricot tree");

                window.p2.add("North", dialogLabel);
                window.p2.add("South", OK);
                window.p2.add("Center", items);
                window.p2.validate();
        }

        if( source == window.flow){
                window.p2.removeAll();
                window.p2.setLayout(new FlowLayout());

                window.p2.add(new Label("Flow Layout"));
                window.p2.add(new Button("An extremely long name"));
                window.p2.add(new Button("Short"));
                window.p2.add(new Button("Medium Length"));
                window.p2.add(OK);
                window.p2.add(new Scrollbar(Scrollbar.HORIZONTAL));
                window.p2.validate();
        }

        if( source == window.card){

    		Panel p3 = new Panel();
    		Panel p4 = new Panel();
    		Panel c2 = new Panel();
    		Choice c = new Choice();
    		Label cardLabel = new Label("Card Layout");
                cards = new Panel();

                window.p2.removeAll();
                String BUTTONPANEL = "Show panel with Buttons";
                String TEXTPANEL = "Show panel with TextField";
                window.p2.setLayout(new BorderLayout());

                c.add(BUTTONPANEL);
                c.add(TEXTPANEL);
                c2.add(c);

                cardLabel.setAlignment(Label.CENTER);
                window.p2.add("North", cardLabel);
                window.p2.add("Center", c2);

                cards.setLayout(new CardLayout());
                p3.add(OK);
                p3.add(quit);
                p3.add(reset);
                p4.add(tfield);

                cards.add(BUTTONPANEL, p3);
                cards.add(TEXTPANEL, p4);
                window.p2.add("South", cards);
                c.addItemListener(this);
                tfield.addActionListener(this);

                window.p2.validate();
        }

        if( source == window.grid){
                window.p2.removeAll();
                window.p2.setLayout(new GridLayout(5,1));

                two.addActionListener(this);
                three.addActionListener(this);
                four.addActionListener(this);
                window.p2.add(new Label("Grid Layout     1 col."));

                window.p2.add(two);
                window.p2.add(three);
                window.p2.add(four);
                window.p2.add(OK);
                window.p2.validate();
        }

        if( source == window.gridBag){
                window.p2.removeAll();
                gridBag();
                window.p2.validate();
        }
   }

   public void itemStateChanged(ItemEvent event) {
        CardLayout cl = (CardLayout)(cards.getLayout());
        cl.show(cards, (String)event.getItem());
   }

    public void gridBag(){
	System.out.println("gridBag");
        GridBagConstraints c = new GridBagConstraints();
        GridBagLayout gridbag = new GridBagLayout();
        window.p2.setLayout(gridbag);

        c.fill = GridBagConstraints.BOTH;
        c.weightx = 1.0;
        c.gridwidth = GridBagConstraints.REMAINDER;

        Label top = new Label("GridBag Layout");
        top.setAlignment(Label.CENTER);
        gridbag.setConstraints(top, c);
        window.p2.add(top);

        c.gridwidth = GridBagConstraints.RELATIVE;
        gridbag.setConstraints(name, c);
        window.p2.add(name);

        c.gridwidth = GridBagConstraints.REMAINDER;
        gridbag.setConstraints(addr, c);
        window.p2.add(addr);

        TextArea comments = new TextArea(3, 25);
        comments.setEditable(true);
        comments.setText("Comments:");
        gridbag.setConstraints(comments, c);
        window.p2.add(comments);

        c.insets = new Insets(15, 0, 0, 0);
        c.fill=GridBagConstraints.NONE;
        c.gridwidth = GridBagConstraints.RELATIVE;
        gridbag.setConstraints(OK, c);
        window.p2.add(OK);

        c.gridheight=1;
        gridbag.setConstraints(cancel, c);
        window.p2.add(cancel);
   }
}