2020-07-30 03:13:48 +00:00
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# Copyright 2020 Canonical, Ltd.
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU Affero General Public License as
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# published by the Free Software Foundation, either version 3 of the
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# License, or (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU Affero General Public License for more details.
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#
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# You should have received a copy of the GNU Affero General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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class ControllerSet:
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def __init__(self, controllers_mod, names, init_args=()):
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self.controllers_mod = controllers_mod
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self.controller_names = names[:]
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self.init_args = init_args
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self.index = -1
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self.instances = []
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def _get_controller_class(self, name):
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cls_name = name+"Controller"
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return getattr(self.controllers_mod, cls_name)
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def load(self, name):
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self.controller_names.remove(name)
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klass = self._get_controller_class(name)
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if hasattr(self, name):
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c = 1
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for instance in self.instances:
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if isinstance(instance, klass):
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c += 1
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rep_cls = self._get_controller_class("Repeated")
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inst = rep_cls(getattr(self, name), c)
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name = inst.name
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else:
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inst = klass(*self.init_args)
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setattr(self, name, inst)
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2020-09-21 02:01:23 +00:00
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inst.controller_index = len(self.instances)
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2020-07-30 03:13:48 +00:00
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self.instances.append(inst)
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def load_all(self):
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while self.controller_names:
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self.load(self.controller_names[0])
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@property
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def cur(self):
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if self.out_of_bounds():
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return None
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return self.instances[self.index]
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def out_of_bounds(self):
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return self.index < 0 or self.index >= len(self.instances)
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