XMMS2 Ruby Qt4 main loop

class XmmsConnectToQt4 < Qt::Object
  def initialize(connection)
    unless @running
      @client = connection
      @fd = @client.io_fd
      @reader = Qt::SocketNotifier.new(@fd, Qt::SocketNotifier::Read)
      @writer = Qt::SocketNotifier.new(@fd, Qt::SocketNotifier::Write)

      @client.io_on_need_out do |flag| # Why flag is not boolean again?
        @writer.enabled = (flag != 0)
      end

      @reader.connect(SIGNAL 'activated(int)') { @client.io_in_handle }
      @writer.connect(SIGNAL 'activated(int)') do
        if @client.io_want_out
          @client.io_out_handle
        end
      end

      @reader.enabled = true
      @writer.enabled = true
    end

    @running ||= true
    self
  end
end