/* Licence: williamsmobile.co.uk/licence.htm */

package mypackage;

import net.rim.device.api.ui.component.ButtonField;
import net.rim.device.api.ui.component.EditField;
import net.rim.device.api.ui.component.TextField;
import net.rim.device.api.ui.Field;
import net.rim.device.api.ui.FieldChangeListener;
import java.util.Random;

class NumGen extends net.rim.device.api.ui.UiApplication {
    public static void main(String[] args) {
        new NumGen().enterEventDispatcher();
    }

    NumGen() {
        pushScreen(new MyScreen());
    }
}

class MyScreen extends net.rim.device.api.ui.container.MainScreen {
    EditField minField, maxField;
    ButtonField genBtn;
    TextField numField;

    MyScreen() {
        setTitle("NumGen 1.2 - williamsmobile.co.uk");

        minField = new EditField("Min Value: ", "", 10, EditField.FILTER_NUMERIC);
        maxField = new EditField("Max Value: ", "", 10, EditField.FILTER_NUMERIC);
        genBtn = new ButtonField("Generate", ButtonField.CONSUME_CLICK);
        numField = new TextField(TextField.NON_FOCUSABLE);

        genBtn.setChangeListener(new listener());

        add(minField);
        add(maxField);
        add(genBtn);
        add(numField);
    }

    class listener implements FieldChangeListener
    {
        public void fieldChanged(Field field, int context)
        {
            if (field == genBtn)
            {
                Random rand = new Random();
                int minInt = Integer.parseInt(minField.getText());
                int maxInt = Integer.parseInt(maxField.getText());
                int num = rand.nextInt((maxInt - minInt) + 1) + minInt;
                numField.setText(Integer.toString(num));
            }
        }
    }

    public boolean onSavePrompt() {
        return true;
    }
}