277294.ijbsn.asia

Button.java

2004-03-24T16:00:00Z

ButtonCommand.java

2004-03-24T16:00:00Z

ButtonCommand2.java

2004-03-24T16:00:00Z

ButtonCommanding.java

2004-03-24T16:00:00Z

package examples.command.aspectj;

import ca.ubc.cs.spl.pattern.library.CommandProtocol;
import ca.ubc.cs.spl.pattern.library.Command;
import ca.ubc.cs.spl.pattern.library.CommandInvoker;
import ca.ubc.cs.spl.pattern.library.CommandReceiver; 
import java.io.PrintStream;

public aspect ButtonCommanding extends CommandProtocol {

 declare parents: Button implements CommandInvoker;
 declare parents: Printer implements CommandReceiver;
 declare parents: ButtonCommand implements Command; // Unneccessay
 declare parents: ButtonCommand2 implements Command; // "Making" a class
 // a Command
 
 /**
 * Implements a sample command. This one prints a short message to 
 * <code>System.out</code> whenever it executes. The message is
 * <quote>"ButtonCommand number 2 executed"</quote>. 
 */
 
 public void ButtonCommand2.executeCommand(CommandReceiver receiver) {
 ((Printer) receiver).println("ButtonCommand number 2 executed");
 } 

 /**
 * The join points after which to execute the command.
 * This replaces the normally scattered myCommand.execute() calls. 
 * In this example, a call to <code>Button.clicked()</code> triggers
 * the execution of the command.
 *
 * @param invoker the object invoking the command
 */

 protected pointcut commandTrigger(CommandInvoker invoker): 
 call(void Button.clicked()) && target(invoker);
}

Main.java

2004-03-24T16:00:00Z

package examples.command.aspectj;

/* -*- Mode: Java; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
 *
 * This file is part of the design patterns project at UBC
 *
 * The contents of this file are subject to the Mozilla Public License
 * Version 1.1 (the "License"); you may not use this file except in
 * compliance with the License. You may obtain a copy of the License at
 * either http://www.mozilla.org/MPL/ or http://aspectj.org/MPL/.
 *
 * Software distributed under the License is distributed on an "AS IS" basis,
 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
 * for the specific language governing rights and limitations under the
 * License.
 *
 * The Original Code is ca.ubc.cs.spl.pattern.
 *
 * Contributor(s): 
 */
 
import javax.swing.JFrame; 
import javax.swing.JPanel;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent; 

import ca.ubc.cs.spl.pattern.library.Command;

/**
 * Implements the driver for the command design pattern example. 
 *
 * Intent: Encapsulate a request as an object, thereby letting you 
 * parameterize clients with different requests, queueu or log requests, 
 * and support undoable operations.
 *
 * Participatng objects are <code>Button</code>s as Invokers,
 * and a <code>ButtonCommand</code> and <code>ButtonCommand2</code> as 
 * two concrete Commands.
 *
 * This example creates a simple GUI with three buttons. Each button has a 
 * command associated with it that is executed when the button is pressed. 
 * Button1 and button3 have the same command, button2 has a different one.
 *
 * This is the Java version. 
 *
 * This version of the pattern lets the developer specify what should trigger 
 * a call to <code>executeCommand()</code>, without changing the Invoker
 * code.
 *
 * Neither Commands nor Invoker have to know of their 
 * involvement in the pattern and can actually act as both. 
 * <code>ButtonCommanding2</code> is an example of a Command that
 * is unaware of its role. In such cases, the concrete pattern instance
 * aspect assigns the role and defines the Command's behavior.
 *
 * @author Jan Hannemann
 * @author Gregor Kiczales
 * @version 1.0, 05/13/02
 * 
 * @see Button
 * @see ButtonCommand
 * @see Buttoncommand2
 */

public class Main extends JFrame {


	
 /**
 * This example creates a simple GUI with three buttons. Each button has a 
 * command associated with it that is executed when the button is pressed. 
 * Button1 and button3 have the same command, button2 has a different one.
 */


	public static void main(String[] args) {
 	Button button1 = new Button("Button1");
 	Button button2 = new Button("Button2");
 	Button button3 = new Button("Button3"); 
 	
 	Command com1 = new ButtonCommand();
 	Command com2 = new ButtonCommand2();
 	
		JPanel pane = new JPanel();
		pane.add(button1); 
		ButtonCommanding.aspectOf().setCommand(button1, com1);
		
		pane.add(button2);
		ButtonCommanding.aspectOf().setCommand(button2, com2);
		ButtonCommanding.aspectOf().setReceiver(com2, new Printer());
		
		pane.add(button3);
		ButtonCommanding.aspectOf().setCommand(button3, com1);
		
 JFrame frame = new JFrame("Testing: Command Pattern");		
		
		frame.getContentPane().add(pane);
		frame.addWindowListener(new WindowAdapter() {
			public void windowClosing(WindowEvent e) {System.exit(0);}
		}); 
		frame.pack();
		frame.setVisible(true);	}
}

Printer.java

2004-03-24T16:00:00Z

files.lst

2004-03-24T16:00:00Z