MainScreen.java

/*
 * Copyright © 2011 Nokia Corporation. All rights reserved.
 * Nokia and Nokia Connecting People are registered trademarks of Nokia Corporation. 
 * Oracle and Java are trademarks or registered trademarks of Oracle and/or its
 * affiliates. Other product and company names mentioned herein may be trademarks
 * or trade names of their respective owners. 
 * See LICENSE.TXT for license information.
 */
package com.nokia.example.capitals.ui;

import javax.microedition.lcdui.Command;
import javax.microedition.lcdui.Displayable;
import javax.microedition.lcdui.Form;
import javax.microedition.lcdui.TextField;
import com.nokia.example.capitals.CapitalMIDlet;

/**
 * Main Screen. From this you can select the country and request
 * the WebService to be called using the country as input
 */
public class MainScreen extends Screen {

    private Command exitCommand, callCommand;
    private TextField textField;

    public MainScreen(CapitalMIDlet midlet) {
        super(midlet);

        // create form
        textField = new TextField("Country", "", 20, TextField.ANY);
        Form f = new Form("Capital Service");
        f.append(textField);
        displayable = f;

        // create command buttons
        exitCommand = new Command("Exit", Command.EXIT, 0);
        displayable.addCommand(exitCommand);
        callCommand = new Command("Retrieve Capital", Command.OK, 0);
        displayable.addCommand(callCommand);

        // set command listener
        displayable.setCommandListener(this);
    }

    public void commandAction(Command c, Displayable d) {
        if (c == exitCommand) {
            midlet.quit();
        } else if (c == callCommand) {
            if (textField.getString().length() > 0) {
                // request the midlet to retrive the capital
                midlet.requestCapital(textField.getString());
            }
        }
    }
}