59 lines
2.0 KiB
Python
59 lines
2.0 KiB
Python
# Copyright 2020 Canonical, Ltd.
|
|
#
|
|
# This program is free software: you can redistribute it and/or modify
|
|
# it under the terms of the GNU Affero General Public License as
|
|
# published by the Free Software Foundation, either version 3 of the
|
|
# License, or (at your option) any later version.
|
|
#
|
|
# This program is distributed in the hope that it will be useful,
|
|
# but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
# GNU Affero General Public License for more details.
|
|
#
|
|
# You should have received a copy of the GNU Affero General Public License
|
|
# along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
|
|
class ControllerSet:
|
|
|
|
def __init__(self, controllers_mod, names, init_args=()):
|
|
self.controllers_mod = controllers_mod
|
|
self.controller_names = names[:]
|
|
self.init_args = init_args
|
|
self.index = -1
|
|
self.instances = []
|
|
|
|
def _get_controller_class(self, name):
|
|
cls_name = name+"Controller"
|
|
return getattr(self.controllers_mod, cls_name)
|
|
|
|
def load(self, name):
|
|
self.controller_names.remove(name)
|
|
klass = self._get_controller_class(name)
|
|
if hasattr(self, name):
|
|
c = 1
|
|
for instance in self.instances:
|
|
if isinstance(instance, klass):
|
|
c += 1
|
|
rep_cls = self._get_controller_class("Repeated")
|
|
inst = rep_cls(getattr(self, name), c)
|
|
name = inst.name
|
|
else:
|
|
inst = klass(*self.init_args)
|
|
setattr(self, name, inst)
|
|
inst.controller_index = len(self.instances)
|
|
self.instances.append(inst)
|
|
|
|
def load_all(self):
|
|
while self.controller_names:
|
|
self.load(self.controller_names[0])
|
|
|
|
@property
|
|
def cur(self):
|
|
if self.out_of_bounds():
|
|
return None
|
|
return self.instances[self.index]
|
|
|
|
def out_of_bounds(self):
|
|
return self.index < 0 or self.index >= len(self.instances)
|