/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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.
*/
/**
* Project : MapleFetion2
* Package : net.solosky.maplefetion.client.dialog
* File : BuddyEnterFuture.java
* Author : solosky < solosky772@qq.com >
* Created : 2010-2-1
* License : Apache License 2.0
*/
package net.solosky.maplefetion.util;
import net.solosky.maplefetion.bean.Buddy;
import net.solosky.maplefetion.client.dialog.DialogException;
/**
*
* 等待好友进入对话框
*
* 这个工具目前只能实现等待一个好友进入对话，如果同时邀请了多个好友进入对话这个工具就会判断错误
* TODO 完善对同时邀请多个好友进入对话的等待操作
*
* @author solosky <solosky772@qq.com>
*/
public class BuddyEnterHelper
{
/**
* 锁，利用这个对象来实现等待
*/
private Object lock;
/**
* 当前的好友
*/
private Buddy curBuddy;
/**
* 构造函数
*/
public BuddyEnterHelper()
{
this.lock = new Object();
}
/**
* 等待好友进入对话框
* @param buddy
* @throws InterruptedException
* @throws InterruptedException
*/
public void waitBuddyEnter(Buddy buddy, long timeout) throws DialogException, InterruptedException
{
synchronized (lock) {
//检查是否提前通知
if(this.curBuddy!=null && this.curBuddy.getUri().equals(buddy.getUri()))
return;
lock.wait(timeout);
//如果等待失败，抛出异常
if(this.curBuddy==null || !this.curBuddy.getUri().equals(buddy.getUri()))
throw new DialogException("Buddy enter dialog failed. Buddy="+buddy);
}
}
/**
* 通知等待线程，好友已经进入了
* @param buddy
*/
public void buddyEntered(Buddy buddy)
{
synchronized (lock) {
this.curBuddy = buddy;
lock.notifyAll();
}
}
}