def __init__(self, mixer, parent): ControlSurfaceComponent.__init__(self) assert isinstance(mixer, MixerComponent) self._param_controls = None self._mixer = mixer self._buttons = [] self._param_controls = None self._lock_button = None self._last_mode = 0 self._is_locked = False self._ignore_buttons = False self._track = None self._strip = None self._parent = parent self._track_eq = SpecialTrackEQComponent() self._track_filter = TrackFilterComponent()