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#
# video_demo.py
#
# Simple statemachine demo, based on the state transitions given in videostate.pystate
#
import statemachine
import videostate
class Video(videostate.VideoStateMixin):
def __init__(self, title):
self.initialize_state(videostate.Stopped)
self.title = title
# ==== main loop - a REPL ====
v = Video("Die Hard.mp4")
while True:
print(v.state)
cmd = input("Command ({})> ".format('/'.join(videostate.VideoState.transition_names))).lower().strip()
if not cmd:
continue
if cmd in ('?', 'h', 'help'):
print('enter a transition {!r}'.format(videostate.VideoState.transition_names))
print(' q - quit')
print(' ?, h, help - this message')
continue
# quitting out
if cmd.startswith('q'):
break
# get transition function for given command
state_transition_fn = getattr(v, cmd, None)
if state_transition_fn is None:
print('???')
continue
# invoke the input transition, handle invalid commands
try:
state_transition_fn()
except videostate.VideoState.InvalidTransitionException as e:
print(e)
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