demolauncher.java

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/*
 * $Header$
 * $Date$ 
 * $Revision$
 * Copyright (C) 2003-2004 CIC, Tsinghua Univ. 
 */
package jcase.gui;
import java.awt.Frame;
import jcase.gui.swing.BaseSwingDemo;
/**
 * 启动一个Demo的工具类
 */
public class DemoLauncher {
	public static void main(String[] args) {
		Object demo=null;
		try {
			demo = Class.forName(args[0]).newInstance();
		} catch (InstantiationException e) {
			System.err.println("无法实例化类 "+args[0]+"，也许其没有无参数的构造函数");
			e.printStackTrace();
		} catch (IllegalAccessException e) {
			System.err.println("无法访问类 "+args[0]);
			e.printStackTrace();
		} catch (ClassNotFoundException e) {
			System.err.println("找不到这个类："+args[0]);
			e.printStackTrace();
		} catch(IndexOutOfBoundsException e){
			System.err.println("用法：java jcase.gui.DemoLauncher DemoclassName");			
		}
		if(null==demo){
			System.exit(-1);
		}
		if(demo instanceof BaseDemo){
			awtDemo((BaseDemo)demo);
		}
		else if(demo instanceof BaseSwingDemo){
			swingDemo((BaseSwingDemo)demo);
		}
		else{
			System.err.println(args[0]+"即不是一个AWTDemo也不是一个SwingDemo.\n" +
					"Demo应该是jcase.gui.BaseDemo的子类(AWTDemo)或者jcase.gui.BaseSwingDemo(SwingDemo)的子类。");
		}
	}
	
	public static void awtDemo(BaseDemo demo){
		Frame frm = new Frame(demo.getTitle());				
		frm.add(demo);
		frm.pack();
		frm.show();
		frm.addWindowListener(new DefaultWindowListener());
	}
	public static void swingDemo(BaseSwingDemo demo){
		javax.swing.JFrame frm = new javax.swing.JFrame(demo.getTitle());				
		frm.getContentPane().add(demo);
		frm.pack();
		frm.show();
		frm.addWindowListener(new DefaultWindowListener());
	}
}