ProtocolLib/src/main/java/com/comphenix/protocol/events/ConnectionSide.java

91 lines
2.4 KiB
Java

/*
* ProtocolLib - Bukkit server library that allows access to the Minecraft protocol.
* Copyright (C) 2012 Kristian S. Stangeland
*
* 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
*/
package com.comphenix.protocol.events;
import com.comphenix.protocol.PacketType.Sender;
/**
* Used to set a packet filter.
*
* @author Kristian
*/
public enum ConnectionSide {
/**
* Listen for server side packets that will invoke onPacketSending().
*/
SERVER_SIDE,
/**
* Listen for client side packets that will invoke onPacketReceiving().
*/
CLIENT_SIDE,
/**
* Listen for both client and server side packets.
*/
BOTH;
public boolean isForClient() {
return this == CLIENT_SIDE || this == BOTH;
}
public boolean isForServer() {
return this == SERVER_SIDE || this == BOTH;
}
/**
* Retrieve the sender of this connection side.
* <p>
* This is NULL for {@link #BOTH}.
* @return The sender.
*/
public Sender getSender() {
if (this == SERVER_SIDE)
return Sender.SERVER;
else if (this == CLIENT_SIDE)
return Sender.CLIENT;
return null;
}
/**
* If both connection sides are present, return {@link #BOTH} - otherwise, return the one valud connection side.
* <p>
* NULL is not a valid connection side.
* @param a - the first connection side.
* @param b - the second connection side.
* @return BOTH or the one valid side, or NULL.
*/
public static ConnectionSide add(ConnectionSide a, ConnectionSide b) {
if (a == null)
return b;
if (b == null)
return a;
// Now merge them together
boolean client = a.isForClient() || b.isForClient();
boolean server = a.isForServer() || b.isForServer();
if (client && server)
return BOTH;
else if (client)
return CLIENT_SIDE;
else
return SERVER_SIDE;
}
}