/**
 *	Demonstrate the use of sockets with NetScape 2.0b2. This applet
 *	Queries a background server process witten in Java  for a stock price.
 *	The price is used to calculate a position value.
 *	A configuration dialog box is also provided for connection to
 *	Other servers supporting a stock proce service on a known port.
 *	The syntax for a request is very simple. Open the known port
 *	Send the ticker symbol and then read the returned price (End of file is
 *	returned by the server) and display it or perofrm your calculation 
 *	with it.
 */
import java.awt.*;
import java.applet.Applet;
import GetAStock;

class StockPanels extends Panel {
        String          ServerName = new String("localhost");
        int             PortNumber = 7000;
        Label       	lserver,lport,lsymbol,lprice,lshares,ltotal;
        TextField       server,port,symbol,price,shares,total;
        Button          ask;
        Panel           main,configure,getaquote;
        GridBagLayout 	configGrid,quoteGrid;
        GridBagConstraints configGridc,quoteGridc;

    	StockPanels() {
        	configGrid = new GridBagLayout();
        	configGridc = new GridBagConstraints();
        	quoteGrid = new GridBagLayout();
        	quoteGridc = new GridBagConstraints();
 
        	setFont(new Font("Courier", Font.PLAIN, 14));
		setLayout(new CardLayout());
                main = new Panel();
                add("Main",main);
                configure = new Panel();
                add("Configure",configure);
                getaquote = new Panel();
                add("GetAQuote",getaquote);
                //      Main Panel has two buttons on it
                main.add("North",   new Button("Configure"));
                main.add("West",   new Button("Get A Quote"));

//                configure.setLayout(new GridLayout(2, 2,10,3));
        	configure.setLayout(configGrid);
//		configGridc.gridwidth = 2;
//		configGridc.gridheight = 2;
                //      Add a Server label and field value
                lserver = new Label("Server",Label.LEFT);
	        configGrid.setConstraints(lserver, configGridc);
                server = new TextField("localhost",10);
		configGridc.gridwidth = GridBagConstraints.REMAINDER;
	        configGrid.setConstraints(server, configGridc);
                configure.add( lserver ) ;
                configure.add(server);
                //      Add a port label  and port value
                lport = new Label("Port",Label.LEFT);
		configGridc.gridwidth = 1;
	        configGrid.setConstraints(lport, configGridc);
                port = new TextField("7000",10);
		configGridc.gridwidth = GridBagConstraints.REMAINDER;
	        configGrid.setConstraints(port, configGridc);
                configure.add(lport);
                configure.add(port);

                //getaquote.setLayout(new GridLayout(4, 2,10,3));
                //      Add a Symbol label  and start Symbol value
        	getaquote.setLayout(quoteGrid);
                lsymbol = new Label("Symbol",Label.LEFT);
	        quoteGrid.setConstraints(lsymbol, quoteGridc);
                symbol = new TextField("SUNW",10);
		quoteGridc.gridwidth = GridBagConstraints.REMAINDER;
	        quoteGrid.setConstraints(symbol, quoteGridc);
                getaquote.add(lsymbol);
                getaquote.add(symbol);
                //      Add a shares label
                lshares = new Label("Shares",Label.LEFT);
		quoteGridc.gridwidth = 1;
	        quoteGrid.setConstraints(lshares, quoteGridc);
                shares = new TextField("191",10);
		quoteGridc.gridwidth = GridBagConstraints.REMAINDER;
	        quoteGrid.setConstraints(shares, quoteGridc);
                getaquote.add(lshares);
                getaquote.add(shares);
                //      Add a price
                lprice = new Label("Price",Label.LEFT);
		quoteGridc.gridwidth = 1;
	        quoteGrid.setConstraints(lprice, quoteGridc);
                price = new TextField("0",10);
		quoteGridc.gridwidth = GridBagConstraints.REMAINDER;
	        quoteGrid.setConstraints(price, quoteGridc);
                getaquote.add(lprice);
                getaquote.add(price);
                //      Add a total
                ltotal = new Label("Total",Label.LEFT);
		quoteGridc.gridwidth = 1;
	        quoteGrid.setConstraints(ltotal, quoteGridc);
                total = new TextField("0",10);
		quoteGridc.gridwidth = GridBagConstraints.REMAINDER;
	        quoteGrid.setConstraints(total, quoteGridc);
                getaquote.add(ltotal);
                getaquote.add(total);
                ask = new Button(" Get price for stock ");
		quoteGridc.weightx = 1;
		quoteGridc.fill = GridBagConstraints.HORIZONTAL;
		quoteGridc.gridwidth = GridBagConstraints.REMAINDER;
	        quoteGrid.setConstraints(ask, quoteGridc);
                getaquote.add(ask);
    }

    public Dimension preferredSize() {
	return new Dimension(50, 50);
    }
}

public class ShowCommunicationToSocket extends Applet implements Runnable {
    StockPanels 	cards;
    GetAStock   client;
    Thread	myThread = null;
    boolean	request_quote = false;


    public void init() {
	String	param;
        param = getParameter("PortNumber");
        if (param != null)
        	cards.PortNumber = Integer.parseInt(param);
        param = getParameter("ServerName");
        if (param != null)
        	cards.ServerName = param;
	setLayout(new BorderLayout());
	add("Center", cards = new StockPanels());
	Panel p = new Panel();
	p.setLayout(new FlowLayout());
	add("South", p);
	p.add(new Button("first"));
	p.add(new Button("next"));
	((CardLayout)cards.getLayout()).first(cards);
    }

    public void start () {
	if ( myThread == null ) {
		myThread = new Thread(this);
		myThread.start();
	}
    }
    public void run () {
	while ( myThread != null ) {
		if ( request_quote ) {
                	cards.PortNumber = Integer.parseInt(cards.port.getText());
                	cards.ServerName = cards.server.getText();
                	client = new GetAStock(this,cards.PortNumber, cards.ServerName);
                	String newprice = client.getquote(cards.symbol.getText());
                	if ( newprice == null ) {
                       		cards.price.setText("No Data");
                	} else {
                       		cards.price.setText(newprice);
                        	int value = Integer.parseInt(cards.shares.getText());
                        	Double p = new Double(Double.valueOf(newprice).doubleValue());
                        	value *= p.doubleValue();
                        	Double total_value = new Double(value);
                        	cards.total.setText(Integer.toString(total_value.intValue()));
                        	cards.total.setEditable(false);
                	}
			request_quote = false;
		}	
		try {
			Thread.sleep(1000);
		} catch ( InterruptedException e ) {
		}
		repaint(0);
	}
    }
    public boolean action(Event evt, Object arg) {
	if (evt.target instanceof Choice) {
	    ((CardLayout)cards.getLayout()).show(cards,(String)arg);
	} else {
	    if ("first".equals(arg)) {
		((CardLayout)cards.getLayout()).first(cards);
	    } else if ("next".equals(arg)) {
		((CardLayout)cards.getLayout()).next(cards);
	    } else if ("previous".equals(arg)) {
		((CardLayout)cards.getLayout()).previous(cards);
	    } else if ("last".equals(arg)) {
		((CardLayout)cards.getLayout()).last(cards);
	    } else if (" Get price for stock ".equals(arg)) {
		request_quote = true;
	    } else if ("Configure".equals(arg)) {
	    	((CardLayout)cards.getLayout()).show(cards,"Configure");
	    } else if ("Get A Quote".equals(arg)) {
	    	((CardLayout)cards.getLayout()).show(cards,"GetAQuote");
	    } else {
		((CardLayout)cards.getLayout()).show(cards,(String)arg);
	    }
	}
	return true;
    }
    public void stop () {
	myThread = null;
    }	
}