private void StartTalk(object sender, MouseButtonEventArgs e)
{
var item = (ListBoxItem)sender;
var talkToUser = (TalkUser)item.Tag;
if (!talkToUser.IsOnline)
{
MessageBox.Show(talkToUser.UserName + "未登录，不能进行聊天");
return;
}
TalkWindow tw = IsTalkWindowOpen(talkToUser.UserName);
if (tw == null)
{
//打开聊天窗口
tw = new TalkWindow(_userName, talkToUser.UserName);
//弹出显示在父窗口中间
tw.WindowStartupLocation = WindowStartupLocation.CenterScreen;
//tw.Owner = this;
tw.Name = talkToUser.UserName + "_TalkWindow";
//弹出弹出后必须先关闭弹出才能操作父窗口
tw.Show();
}
else
{
tw.Activate();
}
}
/// <summary>
/// 判断聊天窗口是否打开,如果打开则返回窗口对象，否则返回null
/// </summary>
/// <param name="talkToUserName"></param>
private TalkWindow IsTalkWindowOpen(string talkToUserName)
{
TalkWindow openWindow = null;
System.Windows.Application.Current.Dispatcher.Invoke((Action)(() =>
{
foreach (Window win in Application.Current.Windows)
{
if (win.Name == talkToUserName + "_TalkWindow")
{
openWindow = (TalkWindow)win;
break;
}
}
}));
return(openWindow);
}
private void ReceiveData()
{
while (true)
{
try
{
var getMsg = _clientInstance.br.ReadString();
var unPackMsg = TcpHelper.UnPackCommond(getMsg);
var commond = unPackMsg.Item1;
switch (commond)
{
case TcpHelper.TalkCommond.Logout:
//获取好友列表
var sendCommond = TcpHelper.PackCommmond(_userName, TcpHelper.TalkCommond.UpdateUserList);
_clientInstance.SendMessage(sendCommond);
break;
case TcpHelper.TalkCommond.UpdateUserList:
try
{
//获取用户列表
var userList = JsonHandler.UnJson <List <TalkUser> >(unPackMsg.Item2);
//线程中不能操作UI
System.Windows.Application.Current.Dispatcher.Invoke((Action)(() =>
{
CleanUserList();
userList = userList.OrderByDescending(v => v.IsOnline).ToList();
foreach (var user in userList)
{
AddUserToList(user);
}
}));
}catch (Exception e)
{
MessageBox.Show(e.Message);
}
break;
case TcpHelper.TalkCommond.Talk:
var talkMsgs = unPackMsg.Item2.Split(',');
var talkFromUserName = talkMsgs[0];
var talkContent = unPackMsg.Item2.Substring(talkMsgs[0].Length + 1, unPackMsg.Item2.Length - talkMsgs[0].Length - 1);
//将消息存入临时列表
StoreTalkMessage(talkFromUserName, talkContent);
//判断聊天窗口是否打开
TalkWindow tw = IsTalkWindowOpen(talkFromUserName);
if (tw == null)
{
//如果聊天窗口没有打开，则将显示消息条数提示
var messageCount = MessageList.memory[talkFromUserName].Count();
MessageList.SetMessageTipList(talkFromUserName, messageCount);
MessageList.resetMessageTip = true;
}
break;
default:
MessageBox.Show(getMsg);
break;
}
}catch (Exception e)
{
_clientInstance.CloseConnect();
return;
}
}
}