/*
* LumaQQ - Java QQ Client
*
* Copyright (C) 2004 luma <stubma@163.com>
*
* 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 edu.tsinghua.lumaqq.qq.packets.in;

import java.nio.ByteBuffer;
import java.util.ArrayList;
import java.util.List;

import edu.tsinghua.lumaqq.qq.PacketParseException;
import edu.tsinghua.lumaqq.qq.beans.FriendOnlineEntry;
import edu.tsinghua.lumaqq.qq.packets.InPacket;


/**
 * <pre>
 * 得到在線好友列表的應(yīng)答包，格式為
 * 1. 頭部
 * 2. position，和GetFriendListReplyPacket中的position一樣
 * 3. 30字節(jié)的FriendStatus結(jié)構(gòu)
 * 4. 2個未知自己
 * 5. 1個字節(jié)擴(kuò)展標(biāo)志
 * 6. 1個字節(jié)通用標(biāo)志
 * 7. 2個未知自己
 * 8. 結(jié)束符，0，應(yīng)該是c語言的關(guān)系，當(dāng)作字符串結(jié)尾
 * 9. 尾部
 * </pre>
 *
 * @author 馬若劼
 */
public class GetFriendOnlineReplyPacket extends InPacket {
    public byte position;
    public List onlineFriends;
    
    /**
     * 構(gòu)造函數(shù)
     * @param buf 緩沖區(qū)
     * @param length 包長度
     * @throws PacketParseException 解析錯誤
     */
    public GetFriendOnlineReplyPacket(ByteBuffer buf, int length) throws PacketParseException {
        super(buf, length);
    }

    /* (non-Javadoc)
     * @see edu.tsinghua.lumaqq.qq.packets.InPacket#parseBody(java.nio.ByteBuffer)
     */
    protected void parseBody(ByteBuffer buf) throws PacketParseException {
	    // 當(dāng)前好友列表位置
		position = buf.get();
        // 只要還有數(shù)據(jù)就繼續(xù)讀取下一個friend結(jié)構(gòu)
        onlineFriends = new ArrayList();
        while(buf.hasRemaining()) {
            FriendOnlineEntry entry = new FriendOnlineEntry();
            entry.readBean(buf);
            
            // 添加到List
            onlineFriends.add(entry);
        }
    }
}