828dfda5c5
git-svn-id: svn://svn.cy55.de/Zope3/src/loops/trunk@2538 fd906abe-77d9-0310-91a1-e0d9ade77398
108 lines
4 KiB
Python
108 lines
4 KiB
Python
#
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# Copyright (c) 2008 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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Basic implementations for stateful objects and adapters.
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$Id$
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"""
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from zope import component
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from zope.component import adapter
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from zope.interface import implementer
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from zope.traversing.api import getName
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from cybertools.stateful.definition import registerStatesDefinition
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from cybertools.stateful.definition import StatesDefinition
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from cybertools.stateful.definition import State, Transition
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from cybertools.stateful.interfaces import IStatesDefinition, IStateful
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from loops.interfaces import IAssignmentEvent, IDeassignmentEvent
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from loops.interfaces import ILoopsObject, IResource
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from loops.organize.stateful.base import StatefulLoopsObject
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@implementer(IStatesDefinition)
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def classificationQuality():
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return StatesDefinition('classificationQuality',
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State('new', 'new', ('classify', 'verify',
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'change_classification', 'remove_classification'),
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color='red'),
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State('unclassified', 'unclassified', ('classify', 'verify'),
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color='red'),
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State('classified', 'classified',
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('verify', 'change_classification', 'remove_classification'),
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color='yellow'),
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State('verified', 'verified',
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('change_classification', 'remove_classification'),
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color='green'),
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Transition('classify', 'classify', 'classified'),
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Transition('verify', 'verify', 'verified'),
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Transition('change_classification', 'change classification', 'classified'),
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Transition('remove_classification', 'remove classification', 'unclassified'),
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initialState='new')
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class ClassificationQualityCheckable(StatefulLoopsObject):
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statesDefinition = 'loops.classification_quality'
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def getAvailableTransitionsForUser(self):
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return [tr for tr in self.getAvailableTransitions()
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if tr.name == 'verify']
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# automatic transitions
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def assign(self, relation):
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if not self.isRelevant(relation):
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return
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if self.state in ('new', 'unclassified'):
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self.doTransition('classify')
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else:
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self.doTransition('change_classification')
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def deassign(self, relation):
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if not self.isRelevant(relation):
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return
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if self.state in ('new', 'classified', 'verified'):
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old = self.context.getParentRelations()
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if len(old) > 2: # the hasType relation always remains
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self.doTransition('change_classification')
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else:
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self.doTransition('remove_classification')
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def isRelevant(self, relation):
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""" Return True if the relation given is relevant for changing
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the quality state.
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"""
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return (IResource.providedBy(self.context) and
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getName(relation.predicate) != 'hasType')
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# event handlers
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@adapter(ILoopsObject, IAssignmentEvent)
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def assign(obj, event):
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stf = component.getAdapter(event.relation.second, IStateful,
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name='loops.classification_quality')
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stf.assign(event.relation)
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@adapter(ILoopsObject, IDeassignmentEvent)
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def deassign(obj, event):
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stf = component.getAdapter(event.relation.second, IStateful,
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name='loops.classification_quality')
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stf.deassign(event.relation)
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