screenmidlet.java

来自「Sony Ericsson手机上的Facebook客户端全套代码」· Java 代码 · 共 108 行

// Decompiled by Jad v1.5.7g. Copyright 2000 Pavel Kouznetsov.
// Jad home page: http://www.geocities.com/SiliconValley/Bridge/8617/jad.html
// Decompiler options: packimports(3) 
// Source File Name:   ScreenMidlet.java

package se.southend.drops.screen;

import javax.microedition.lcdui.Display;
import javax.microedition.lcdui.Displayable;
import javax.microedition.midlet.MIDlet;

// Referenced classes of package se.southend.drops.screen:
//            Device, ScreenEngine

public abstract class ScreenMidlet extends MIDlet
{

    protected ScreenMidlet()
    {
        instance = this;
        Device.setMidlet(this);
        display = Display.getDisplay(this);
    }

    public static ScreenMidlet getInstance()
    {
        return instance;
    }

    public void minimize()
    {
        display.setCurrent(null);
    }

    public void maximize()
    {
        resumeRequest();
        display.setCurrent(null);
        display.setCurrent(engine.getCanvas());
    }

    public abstract void create();

    public abstract void destroy();

    protected abstract boolean isAutostarted();

    protected void startApp()
    {
        isPaused = false;
        if(!running)
        {
            running = true;
            engine = ScreenEngine.getInstance();
            create();
            display.setCurrent(engine.getCanvas());
            if(isAutostarted())
                pauseApp();
        } else
        {
            display.setCurrent(engine.getCanvas());
        }
    }

    public void pauseApp()
    {
        isPaused = true;
        minimize();
        notifyPaused();
    }

    public boolean isPaused()
    {
        return isPaused;
    }

    protected void destroyApp(boolean unconditional)
    {
        destroy();
        running = false;
        display.setCurrent((Displayable)null);
        display = null;
        instance = null;
    }

    public Display getDisplay()
    {
        return display;
    }

    public boolean isRunning()
    {
        return running;
    }

    public void die()
    {
        destroyApp(true);
        notifyDestroyed();
    }

    private static ScreenMidlet instance;
    private Display display;
    private ScreenEngine engine;
    private boolean running;
    private boolean isPaused;
}