package com.wy.ch17;

import javax.microedition.midlet.*;
import javax.microedition.lcdui.*;

public class MainMIDlet extends MIDlet {
    private static MainMIDlet main;
    private Display display;
    MainForm mainform;
    boolean paused = false;
    Displayable currentDisplay;

    public MainMIDlet() {
        main = this;
        mainform = new MainForm();
    }

    public void destroyApp(boolean _boolean) throws
            MIDletStateChangeException {
    }

    public void pauseApp() {
        currentDisplay = display.getCurrent();
        while (currentDisplay instanceof Alert) {
            ((Alert) currentDisplay).setTimeout(0);
            currentDisplay = display.getCurrent();
        }
        paused = true;

    }

    
    public void startApp() throws MIDletStateChangeException {
        if (paused) { //如果是從暫停狀態(tài)回來，則顯示原來的 display
            display.setCurrent(currentDisplay);
            paused = false;
        } else {
            display = Display.getDisplay(this);
            display.setCurrent(mainform);
        }

    }

    public static MainMIDlet getInstance() {
        return main;
    }

}