f2d9bc9af8
git-svn-id: svn://svn.cy55.de/Zope3/src/loops/trunk@1256 fd906abe-77d9-0310-91a1-e0d9ade77398
277 lines
7.8 KiB
Python
277 lines
7.8 KiB
Python
#
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# Copyright (c) 2006 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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Type management stuff.
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$Id$
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"""
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from zope.app import zapi
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from zope.component import adapts
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from zope.interface import implements
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from zope.cachedescriptors.property import Lazy
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from zope.dottedname.resolve import resolve
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from zope import schema
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from zope.security.proxy import removeSecurityProxy
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from cybertools.typology.type import BaseType, TypeManager
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from loops.interfaces import ILoopsObject, IConcept, IResource
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from loops.interfaces import ITypeConcept, IResourceAdapter, IFile, IImage
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from loops.concept import Concept
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from loops.resource import Resource, Document, MediaAsset
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class LoopsType(BaseType):
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adapts(ILoopsObject)
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factoryMapping = dict(concept=Concept, resource=Resource)
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containerMapping = dict(concept='concepts', resource='resources')
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@Lazy
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def title(self):
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tp = self.typeProvider
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return tp is None and u'Unknown Type' or tp.title
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@Lazy
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def token(self):
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tp = self.typeProvider
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return tp is None and '.unknown' or self.root.getLoopsUri(tp)
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@Lazy
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def tokenForSearch(self):
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tp = self.typeProvider
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typeName = tp is None and 'unknown' or str(zapi.getName(tp))
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return ':'.join(('loops', self.qualifiers[0], typeName,))
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@Lazy
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def typeInterface(self):
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adapter = zapi.queryAdapter(self.typeProvider, ITypeConcept)
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if adapter is not None:
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return adapter.typeInterface
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else:
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conceptType = self.typeProvider
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typeConcept = self.root.getConceptManager().getTypeConcept()
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if conceptType is typeConcept:
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return ITypeConcept
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return None
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@Lazy
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def qualifiers(self):
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ti = self.typeInterface
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if ti is None or not issubclass(ti, IResourceAdapter):
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return ('concept',)
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return ('resource',)
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@Lazy
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def factory(self):
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return self.factoryMapping.get(self.qualifiers[0], Concept)
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@Lazy
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def defaultContainer(self):
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return self.root[self.containerMapping.get(self.qualifiers[0], 'concept')]
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@Lazy
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def root(self):
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return self.context.getLoopsRoot()
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@Lazy
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def typeProvider(self):
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return self.context.conceptType
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class LoopsTypeInfo(LoopsType):
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""" The type info class used by the type manager for listing types.
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"""
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def __init__(self, typeProvider):
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self.typeProvider = self.context = typeProvider
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class ConceptType(LoopsType):
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""" The IType adapter for concept objects.
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Probably obsolete because all real stuff has gone to LoopsType.
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"""
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adapts(IConcept)
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class ConceptTypeInfo(LoopsTypeInfo):
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""" The type info class used by the type manager for listing types.
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Probably obsolete because all real stuff has gone to LoopsTypeInfo.
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"""
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class ResourceType(LoopsType):
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""" The 'old-style' resource type - different classes (Document, MediaAsset)
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per type. Will be replaced by new style types that are governed by
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type concepts as is already the case for concepts.
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"""
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adapts(IResource)
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typeTitles = {'MediaAsset': u'Media Asset'}
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typeInterface = None
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qualifiers = ('resource',)
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typeProvider = None
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@Lazy
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def title(self):
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cn = self.className
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return self.typeTitles.get(cn, unicode(cn))
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@Lazy
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def token(self):
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return '.'.join((self.factory.__module__, self.className))
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#cn = self.className
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#return '/'.join(('.loops/resources', cn.lower(),))
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@Lazy
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def tokenForSearch(self):
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cn = self.className
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return ':'.join(('loops:resource', cn.lower(),))
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@Lazy
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def defaultContainer(self):
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return self.root.getResourceManager()
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@Lazy
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def factory(self):
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return self.context.__class__
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@Lazy
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def className(self):
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return self.factory.__name__
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class ResourceTypeInfo(ResourceType):
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def __init__(self, context, factory):
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self.context = context
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self.factory = factory
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class LoopsTypeManager(TypeManager):
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adapts(ILoopsObject)
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def __init__(self, context):
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self.context = context.getLoopsRoot()
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def getType(self, token):
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if token.startswith('.loops'):
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return ConceptTypeInfo(self.context.loopsTraverse(token))
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return ResourceTypeInfo(self.context, resolve(token))
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@property
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def types(self):
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return self.conceptTypes() + self.resourceTypes()
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def listTypes(self, include=None, exclude=None):
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for t in self.types:
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if include and not [q for q in t.qualifiers if q in include]:
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continue
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if exclude and [q for q in t.qualifiers if q in exclude]:
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continue
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yield t
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def conceptTypes(self):
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cm = self.context.getConceptManager()
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to = cm.getTypeConcept()
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tp = cm.getTypePredicate()
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if to is None or tp is None:
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return ()
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result = to.getChildren([tp])
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if to not in result:
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result.append(to)
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return tuple([ConceptTypeInfo(c) for c in result])
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def resourceTypes(self):
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return tuple([ResourceTypeInfo(self.context, cls)
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for cls in (Document, MediaAsset)])
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class TypeConcept(object):
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""" typeInterface adapter for concepts of type 'type'.
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"""
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implements(ITypeConcept)
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adapts(IConcept)
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def __init__(self, context):
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self.context = removeSecurityProxy(context)
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def getTypeInterface(self):
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ti = getattr(self.context, '_typeInterface', None)
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if ti is None:
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conceptType = self.context
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if conceptType == conceptType.getLoopsRoot().getConceptManager().getTypeConcept():
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return ITypeConcept
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return ti
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def setTypeInterface(self, ifc):
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self.context._typeInterface = ifc
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typeInterface = property(getTypeInterface, setTypeInterface)
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class TypeInterfaceSourceList(object):
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implements(schema.interfaces.IIterableSource)
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#typeInterfaces = (ITypeConcept, IFile, IImage,)
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typeInterfaces = (ITypeConcept,)
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def __init__(self, context):
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self.context = context
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def __iter__(self):
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return iter(self.typeInterfaces)
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def __len__(self):
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return len(self.typeInterfaces)
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class AdapterBase(object):
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""" (Mix-in) Class for concept adapters that provide editing of fields
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defined by the type interface.
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"""
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adapts(IConcept)
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_attributes = ('context', '__parent__', )
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_schemas = list(IConcept)
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def __init__(self, context):
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self.context = context # to get the permission stuff right
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self.__parent__ = context
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def __getattr__(self, attr):
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self.checkAttr(attr)
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return getattr(self.context, '_' + attr, None)
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def __setattr__(self, attr, value):
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if attr in self._attributes:
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object.__setattr__(self, attr, value)
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else:
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self.checkAttr(attr)
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setattr(self.context, '_' + attr, value)
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def checkAttr(self, attr):
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if attr not in self._schemas:
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raise AttributeError(attr)
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