returnable.java

一个不错的多媒体传输程序

/*
 * Movino J2ME Client
 * Copyright (C) 2007  Johannes Berg
 * 
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 * 
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 */

package org.movino;

import javax.microedition.lcdui.Alert;
import javax.microedition.lcdui.AlertType;
import javax.microedition.lcdui.Display;

public abstract class Returnable implements Showable{
	
	private Display showDisplay;
	private Showable returnShowable;
	
	public Returnable(){
		showDisplay=null;
		returnShowable=null;
	}
	
	public final void show(Display display, Showable return_showable){
		showDisplay = display;
		returnShowable = return_showable;
		show(showDisplay);
	}
	
	public Display getDisplay(){
		return showDisplay;
	}
	
	public Showable getReturnShowable(){
		return returnShowable;
	}
	
	public void returnBack(){
		returnShowable.reShow(showDisplay);
	}
	
	public void alert(String mess){
		Alert alert = new Alert("Message",mess,null,AlertType.INFO);
		alert.setTimeout(Alert.FOREVER);
		showDisplay.setCurrent(alert);
	}
}