cmdjoin.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.Server;
import freecs.interfaces.ICommand;
import freecs.core.Group;
import freecs.core.GroupManager;
import freecs.content.MessageState;

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

	private CmdJoin () { }
	private CmdJoin (CommandSet cs) {
		this.cs=cs;
	}
	
	public static ICommand getInstance (CommandSet cs) {
		if (selve == null) {
			selve = new CmdJoin (cs);
		}
		return selve;
	}
	
	public boolean execute (MessageState msgState, String param) {
		if (param.length () < 1) {
			msgState.msgTemplate="error.j.noArg";
			msgState.sender.sendMessage (msgState.mp);
			return false;
		}
		String groupname;
		String topic = "";
		int pos = param.indexOf (":");
		if (pos > -1) { // joincommand issued with topic
			topic = param.substring (pos+1).trim ();
			groupname = param.substring (0, pos).trim ();
		} else {
			groupname = param;
		}
		if (groupname.length() > 255)
			groupname = groupname.substring (0,255);
		Group sg = msgState.sender.getGroup ();
		if (sg.getName ().equalsIgnoreCase (groupname)) {
			msgState.target=groupname;
			msgState.msgTemplate="error.j.alreadyHere";
			msgState.sender.sendMessage (msgState.mp);
			return false;
		}
		msgState.target = groupname;
		Group g = GroupManager.mgr.getGroup (groupname);
		if (cs.isPunished (msgState) && !Server.srv.isStartingGroup(g))
			return false;
		if (g != null && g.usrIsBaned (msgState.sender.getName())) {
			msgState.msgTemplate = "error.j.baned";
			msgState.sender.sendMessage (msgState.mp);
			return false;
		}
		if (g != null && g.equals (sg)) 
			return false;
		msgState.source = msgState.sender.getGroup ().getName ();
		if (g == null) {
			g = GroupManager.mgr.openGroup (groupname, topic, msgState.sender);
			if (g == null) {
				msgState.msgTemplate = "error.j.noRightToOpen";
				msgState.sender.sendMessage (msgState.mp);
				return false;
			}
		}
		if (!g.addUser (msgState.sender)) {
			msgState.msgTemplate = "error.j.noRight";
			msgState.sender.sendMessage (msgState.mp);
			return false;
		}
		msgState.msgTemplate = "message.user.leaving.group";
		sg.sendModeraedMessage (msgState.mp);
		msgState.msgTemplate = "message.j";
		msgState.message=g.getTheme();
		msgState.sender.sendMessage (msgState.mp);
		msgState.msgTemplate = "message.user.join.group";
		g.sendModeraedMessage (msgState.mp);
		return true;
	}
}