org.eclipse.jst.server.jetty.core/src/org/eclipse/jst/server/jetty/core/command/ModifyPortCommand.java

/*******************************************************************************
 * Copyright (c) 2003, 2005 IBM Corporation and others.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 * 
 * Contributors:
 *     IBM Corporation - Initial API and implementation
 *     Angelo Zerr <angelo.zerr@gmail.com> - Jetty packages
 *******************************************************************************/
package org.eclipse.jst.server.jetty.core.command;

import java.util.Iterator;

import org.eclipse.jst.server.jetty.core.IJettyConfigurationWorkingCopy;
import org.eclipse.jst.server.jetty.core.internal.Messages;
import org.eclipse.wst.server.core.ServerPort;

/**
 * Command to change the configuration port.
 */
public class ModifyPortCommand extends ConfigurationCommand
{
    protected String _id;
    protected int _port;
    protected int _oldPort;

    /**
     * ModifyPortCommand constructor.
     * 
     * @param configuration
     *            a Jetty configuration
     * @param id
     *            a port id
     * @param port
     *            new port number
     */
    public ModifyPortCommand(IJettyConfigurationWorkingCopy configuration, String id, int port)
    {
        super(configuration,Messages.configurationEditorActionModifyPort);
        this._id = id;
        this._port = port;
    }

    /**
     * Execute the command.
     */
    public void execute()
    {
        // find old port number
        Iterator<ServerPort> iterator = getWorkingCopy().getServerPorts().iterator();
        while (iterator.hasNext())
        {
            ServerPort temp = iterator.next();
            
            if (_id.equals(temp.getId()))
            {
                _oldPort = temp.getPort();
            }
        }

        // make the change
        getWorkingCopy().modifyServerPort(_id,_port);
    }

    /**
     * Undo the command.
     */
    public void undo()
    {
        getWorkingCopy().modifyServerPort(_id,_oldPort);
    }
}