tcpform.java

J2ME MIDP_Example_Applications

// Copyright 2003 Nokia Corporation.
//
// THIS SOURCE CODE IS PROVIDED 'AS IS', WITH NO WARRANTIES WHATSOEVER,
// EXPRESS OR IMPLIED, INCLUDING ANY WARRANTY OF MERCHANTABILITY, FITNESS
// FOR ANY PARTICULAR PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE
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// BY THIRD PARTIES
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// Furthermore, information provided in this source code is preliminary,
// and may be changed substantially prior to final release. Nokia Corporation
// retains the right to make changes to this source code at
// any time, without notice. This source code is provided for informational
// purposes only.
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// Corporation.
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// unnamed package

import javax.microedition.lcdui.CommandListener;
import javax.microedition.lcdui.Command;
import javax.microedition.lcdui.Displayable;
import javax.microedition.lcdui.Form;
import javax.microedition.lcdui.TextField;
import javax.microedition.lcdui.StringItem;


class TCPForm
    extends Form
    implements CommandListener, TCPHandlerListener
{
    private final TCPMIDlet midlet;
    private final TCPHandler handler;
    private final TextField dataField;
    private final StringItem statusField;
    private final Command sendCommand;
    private final Command quitCommand;


    TCPForm(TCPMIDlet midlet, TCPHandler handler)
    {
        super("TCP MIDlet");
        this.midlet = midlet;
        this.handler = handler;
        handler.setTCPHandlerListener(this);

        dataField = new TextField("Data", "test", 10, TextField.ANY);
        append(dataField);
        statusField = new StringItem("Status", null);
        append(statusField);

        sendCommand = new Command("Send", Command.SCREEN, 2);
        addCommand(sendCommand);
        quitCommand = new Command("Quit", Command.EXIT, 1);
        addCommand(quitCommand);
        setCommandListener(this);
    }


    public void commandAction(Command cmd, Displayable disp)
    {
        if (cmd == sendCommand)
        {
            String data = dataField.getString();
            statusField.setText("Sending...");

            handler.queueMessageForSending(data.getBytes());
        }
        else if (cmd == quitCommand)
        {
            midlet.formQuit();
        }
    }


    public void handleMessage(byte[] data)
    {
        String msg = new String(data);
        statusField.setText("Received: \"" + msg + "\"");
    }


    public void handleError(String errorMessage)
    {
        statusField.setText("I/O Error in receive: \"" + errorMessage + "\"");
    }
}