/* * Copyright 2004-2005 the original author or authors. * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * *      http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */package net.sf.jml.event;import net.sf.jml.MsnContact;import net.sf.jml.MsnSwitchboard;/** * Msn switchboard listener, used for chat.  *  * @author Roger Chen */public interface MsnSwitchboardListener {    /**     * Switchboard started. Maybe start by user or join a     * switchboard.     *      * @param switchboard     * 		MsnSwitchboard     */    public void switchboardStarted(MsnSwitchboard switchboard);    /**     * Switchboard closed.     *      * @param switchboard     *    	MsnSwitchboard     */    public void switchboardClosed(MsnSwitchboard switchboard);    /**     * A contact join switchboard.     *      * @param switchboard     * 		the MsnSwitchboard which contact joins.     * @param contact     *		the join contact     */    public void contactJoinSwitchboard(MsnSwitchboard switchboard,            MsnContact contact);    /**     * A contact leave switchboard.     *      * @param switchboard     *   	the MsnSwitchboard which friend leave.     * @param contact     *      the leave contact     */    public void contactLeaveSwitchboard(MsnSwitchboard switchboard,            MsnContact contact);}