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()
