helpcommand.java

eq跨平台查询工具源码 eq跨平台查询工具源码

/*
 * HelpCommand.java
 *
 * Copyright (C) 2002, 2003, 2004, 2005, 2006 Takis Diakoumis
 *
 * 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 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., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 *
 */


package org.executequery.actions.helpcommands;

import java.awt.event.ActionEvent;

import org.underworldlabs.swing.actions.BaseCommand;
import org.executequery.gui.HelpWindow;

/* ----------------------------------------------------------
 * CVS NOTE: Changes to the CVS repository prior to the 
 *           release of version 3.0.0beta1 has meant a 
 *           resetting of CVS revision numbers.
 * ----------------------------------------------------------
 */

/** 
 * Executes the Help command.<br>
 * This will open the system help in a separate window.
 *
 * @author   Takis Diakoumis
 * @version  $Revision: 1.5 $
 * @date     $Date: 2006/09/15 13:02:49 $
 */
public class HelpCommand implements BaseCommand {
    
    /** Document help target ID */
    private String target;
    
    public HelpCommand() {}

    public HelpCommand(String page) {
        target = page;
    }
    
    public void execute(ActionEvent e) {
        
        String aCommand = e.getActionCommand();
        
        if (aCommand != null) {
            
            if (aCommand.length() > 0) {
                target = aCommand;
            }
            if (aCommand.equals("Help Topics")) {
                target = null;
            }
            
        } else {
            target = null;
        } 
        
        new HelpWindow(target);
    }
    
}