cmdjoinuser.java

JAVA平台下优秀的CHART开源代码,可以实现类似EXCEL中的二维或三维的饼图/椎图功能.

/**
 * Copyright (C) 2003  Manfred Andres
 * 
 * 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., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 * 
 * Created on 28.09.2003
 */

package freecs.commands;
import freecs.interfaces.ICommand;
import freecs.core.Group;
import freecs.core.User;
import freecs.content.MessageState;

/**
 * @author Manfred Andres
 *
 * freecs.commands
 */
public class CmdJoinUser implements ICommand {
	public String cmd= "/ju";
	private static CmdJoinUser selve=null;
	private CommandSet cs;

	private CmdJoinUser () { }
	private CmdJoinUser (CommandSet cs) {
		this.cs=cs;
	}
	
	public static ICommand getInstance (CommandSet cs) {
		if (selve == null) {
			selve = new CmdJoinUser (cs);
		}
		return selve;
	}
	
	public boolean execute (MessageState msgState, String param) {
		User u;
		if (param.length () < 1) {
		   msgState.msgTemplate="error.ju.noArg";
		   msgState.sender.sendMessage (msgState.mp);
		   return false;
		} else if (param.indexOf (" ") > -1) {
		   u = cs.getUser (msgState, param.substring(0, param.indexOf (" ")));
		} else {
		   u = cs.getUser (msgState, param);
		}
		if (u == null) return false;
		Group g = u.getGroup ();
		if (g == null) return false;
		if (g.equals (msgState.sender.getGroup ())) {
			msgState.target=g.getName();
			msgState.msgTemplate="error.ju.alreadyHere";
			msgState.sender.sendMessage (msgState.mp);
			return false;
		}
		ICommand ic = cs.getCommand("/j");
		return ic.execute (msgState, g.getName());
		// return (cs.evaluate ("/j", msgState, g.getName ()) == CommandSet.TRUE ? true : false);
	}
}