def __init__(self, parent=None):
super(FlightsWidget, self).__init__(parent)
# state vars
self.uifile = 'ui/flights_widget.ui'
# objects, sub-windows
self.ui = None
self._btn_newmsg = ButtonTextOverIcon(self)
self._btn_settings = QPushButton(self)
# world reference
self.world = XNovaWorld_instance()
# columns indexes
self.COL_TIME = 0
self.COL_MISSION = 1
self.COL_FROM = 2
self.COL_TO = 3
self.COL_PLAYER = 4
self.COL_SHIPS_RES = 5