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from kivy.uix.widget import Widget
from kivy.properties import AliasProperty, BooleanProperty, \
ListProperty, StringProperty
from kivy.uix.behaviors import ButtonBehavior
from .action import Action
from . import debug_print
import time
from transitions.extensions import HierarchicalMachine as Machine
class Key(ButtonBehavior, Widget):
STATES = [
'initial',
'configuring',
'configured',
'loading',
'failed',
{
'name': 'loaded',
'children': ['no_config', 'no_actions', 'running']
}
]
TRANSITIONS = [
{
'trigger': 'configure',
'source': 'initial',
'dest': 'configuring'
},
{
'trigger': 'fail',
'source': 'configuring',
'dest': 'failed',
'after': 'key_loaded_callback'
},
{
'trigger': 'success',
'source': 'configuring',
'dest': 'configured',
'after': 'load'
},
{
'trigger': 'no_config',
'source': 'configuring',
'dest': 'loaded_no_config',
'after': 'key_loaded_callback'
},
{
'trigger': 'load',
'source': 'configured',
'dest': 'loading'
},
{
'trigger': 'fail',
'source': 'loading',
'dest': 'failed',
'after': 'key_loaded_callback'
},
{
'trigger': 'success',
'source': 'loading',
'dest': 'loaded',
'after': 'key_loaded_callback'
},
{
'trigger': 'no_actions',
'source': 'loading',
'dest': 'loaded_no_actions',
'after': 'key_loaded_callback'
},
{
'trigger': 'reload',
'source': ['loaded','failed'],
'dest': 'configuring',
'after': 'key_loaded_callback'
},
{
'trigger': 'run',
'source': 'loaded',
'dest': 'loaded_running',
'after': 'finish',
# if a child, like loaded_no_actions, has no transitions, then it is
# bubbled to the parent, and we don't want that.
'conditions': ['is_loaded']
},
{
'trigger': 'finish',
'source': 'loaded_running',
'dest': 'loaded'
}
]
key_sym = StringProperty(None)
custom_color = ListProperty([0, 1, 0])
description_title = StringProperty("")
description = ListProperty([])
state = StringProperty("")
def get_alias_color(self):
if self.is_loaded_inactive():
return [1, 1, 1, 1]
elif self.is_loaded(allow_substates=True):
return [*self.custom_color, 1]
elif self.is_failed():
return [0, 0, 0, 1]
else:
return [*self.custom_color, 100/255]
def set_alias_color(self):
pass
color = AliasProperty(get_alias_color, set_alias_color,
bind=['state', 'custom_color'])
def __init__(self, **kwargs):
self.actions = []
Machine(model=self, states=self.STATES,
transitions=self.TRANSITIONS, initial='initial',
ignore_invalid_triggers=True, queued=True)
super(Key, self).__init__(**kwargs)
# Kivy events
def on_key_sym(self, key, key_sym):
if key_sym != "":
self.configure()
def on_press(self):
self.list_actions()
# Machine states / events
def is_loaded_or_failed(self):
return self.is_loaded(allow_substates=True) or self.is_failed()
def is_loaded_inactive(self):
return self.is_loaded_no_config() or self.is_loaded_no_actions()
def on_enter_configuring(self):
if self.key_sym in self.parent.key_config:
self.config = self.parent.key_config[self.key_sym]
self.actions = []
for key_action in self.config['actions']:
self.add_action(key_action[0], **key_action[1])
if 'description' in self.config['properties']:
self.set_description(self.config['properties']['description'])
if 'color' in self.config['properties']:
self.set_color(self.config['properties']['color'])
self.success()
else:
self.no_config()
def on_enter_loading(self):
if len(self.actions) > 0:
for action in self.actions:
action.load()
else:
self.no_actions()
def on_enter_loaded_running(self, modifiers):
self.parent.parent.ids['KeyList'].append(self.key_sym)
debug_print("running actions for {}".format(self.key_sym))
start_time = time.time()
self.parent.start_running(self, start_time)
action_number = 0
for self.current_action in self.actions:
if self.parent.keep_running(self, start_time):
self.list_actions(action_number=action_number + 0.5)
self.current_action.run()
action_number += 1
self.list_actions(action_number=action_number)
self.parent.finished_running(self, start_time)
# This one cannot be in the Machine state since it would be queued to run
# *after* the loop is ended...
def interrupt(self):
self.current_action.interrupt()
# Callbacks
def key_loaded_callback(self):
self.parent.key_loaded_callback()
def callback_action_ready(self, action, success):
if not success:
self.fail()
elif all(action.is_loaded_or_failed() for action in self.actions):
self.success()
# Setters
def set_description(self, description):
if description[0] is not None:
self.description_title = str(description[0])
self.description = []
for desc in description[1 :]:
if desc is None:
self.description.append("")
else:
self.description.append(str(desc).replace(" ", " "))
def set_color(self, color):
color = [x / 255 for x in color]
self.custom_color = color
# Actions handling
def add_action(self, action_name, **arguments):
self.actions.append(Action(action_name, self, **arguments))
def list_actions(self, action_number=0):
self.parent.parent.ids['ActionList'].update_list(self, action_number)
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