e9b8722793
git-svn-id: svn://svn.cy55.de/Zope3/src/cybertools/trunk@1827 fd906abe-77d9-0310-91a1-e0d9ade77398
73 lines
2 KiB
Python
73 lines
2 KiB
Python
#
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# Copyright (c) 2007 Helmut Merz helmutm@cy55.de
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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 General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (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 General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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#
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"""
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State definition implementation.
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$Id$
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"""
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from zope.interface import implements
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from cybertools.stateful.interfaces import IStatesDefinition
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class State(object):
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def __init__(self, id, title, transitions):
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self.id = id
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self.title = title
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self.transitions = transitions
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class Transition(object):
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def __init__(self, id, title, targetState):
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self.id = id
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self.title = title
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self.targetState = targetState
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class StatesDefinition(object):
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implements(IStatesDefinition)
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# Basic/example states definition:
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_states = {
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'started': State('started', 'Started', ('finish',)),
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'finished': State('finished', 'Finished', ()),
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}
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_transitions = {
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'finish': Transition('finish', 'Finish', 'finished')
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}
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_initialState = 'started'
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def doTransitionFor(self, object, transition):
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object._state = self._transitions[transition].targetState
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def getAvailableTransitionsFor(self, object):
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state = object.getState()
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return [ self._transitions[t] for t in self._states[state].transitions ]
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def registerStatesDefinition(id, definition):
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statesDefinitions[id] = definition
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statesDefinitions = {
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'default': StatesDefinition(),
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}
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