# Common things for the GUI

import os

appIndicator = False

if os.name=="nt" or "FORCE_PYGTK" in os.environ:
    print "Using PyGTK"
    pygobject = False
    import pygtk
    import gtk.gdk as gdk
    import gtk
    import gobject
    try:
        import appindicator
        appIndicator = True
    except Exception, e:
        pass
else:
    print "Using PyGObject"
    pygobject = True
    from gi.repository import Gdk as gdk
    from gi.repository import Gtk as gtk
    from gi.repository import GObject as gobject
    from gi.repository import AppIndicator3 as appindicator
    appIndicator = True

import cairo

#------------------------------------------------------------------------------

class FlightStatusHandler(object):
    """Base class for objects that handle the flight status in some way."""
    def __init__(self):
        self._stage = None
        self._rating = 100
        self._noGoReason = None

    def resetFlightStatus(self):
        """Reset the flight status."""
        self._stage = None
        self._rating = 100
        self._noGoReason = None
        self._updateFlightStatus()
        
    def setStage(self, stage):
        """Set the stage of the flight."""
        if stage!=self._stage:
            self._stage = stage
            self._updateFlightStatus()

    def setRating(self, rating):
        """Set the rating to the given value."""
        if rating!=self._rating:
            self._rating = rating
            if self._noGoReason is None:
                self._updateFlightStatus()

    def setNoGo(self, reason):
        """Set a No-Go condition with the given reason."""
        if self._noGoReason is None:
            self._noGoReason = reason
            self._updateFlightStatus()

#------------------------------------------------------------------------------