from fsm_base import FSMBase


class Buttons(FSMBase):
    states = ['A', 'B', 'C']
    transitions = [
        {'trigger': 'anchor_a', 'source': 'A', 'dest': 'B'},
        {'trigger': 'anchor_b', 'source': 'B', 'dest': 'C'},
        {'trigger': 'anchor_c', 'source': 'C', 'dest': 'A'},
    ]

    def __init__(self):
        super().__init__('A')


fsm = Buttons()