basesupport.py 文件源码

def logOn(self, chatui):
        """Log on to this account.

        Takes care to not start a connection if a connection is
        already in progress.  You will need to implement
        L{_startLogOn} for this to work, and it would be a good idea
        to override L{_loginFailed} too.

        @returntype: Deferred L{interfaces.IClient}
        """
        if (not self._isConnecting) and (not self._isOnline):
            self._isConnecting = 1
            d = self._startLogOn(chatui)
            d.addCallback(self._cb_logOn)
            # if chatui is not None:
            # (I don't particularly like having to pass chatUI to this function,
            # but we haven't factored it out yet.)
            d.addCallback(chatui.registerAccountClient)
            d.addErrback(self._loginFailed)
            return d
        else:
            raise error.ConnectError("Connection in progress")