def show(self, duration=None):
"""
Request the current display show the dialog.
@param duration: Time in seconds the dialog should be displayed for, if None uses self.duration.
"""
if self.display is None:
self.display = dialog.get_display()
if duration is None:
duration = self.duration
self.display.show_dialog(self, duration)
def get_osd():
"""
Get the best supported OSD available.
@return: An OSD object
"""
display = dialog.get_display()
if display.supports_dialogs:
return GraphicsOSD()
else:
return TextOSD()
