274 lines
9 KiB
Python
274 lines
9 KiB
Python
#
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# Copyright (c) 2012 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 implementation of the elements used for the intermediate format for export
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and import of loops objects.
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"""
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import os
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from zope import component
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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.interface import Interface, implements
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from zope.traversing.api import getName, traverse
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from cybertools.composer.interfaces import IInstance
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from cybertools.composer.schema.interfaces import ISchemaFactory
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from cybertools.typology.interfaces import IType
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from loops.common import adapted
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from loops.interfaces import IConceptSchema
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from loops.external.interfaces import IElement
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from loops.i18n.common import I18NValue
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from loops.layout.base import LayoutNode
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from loops.predicate import adaptedRelation
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from loops.view import Node
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class Element(dict):
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implements(IElement)
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elementType = ''
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posArgs = ()
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object = None
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parent = None
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subElements = None
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def __init__(self, name, title, type=None, *args, **kw):
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self['name'] = name
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self['title'] = title
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if type:
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self['type'] = type
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for k, v in kw.items():
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self[k] = v
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def __getitem__(self, key):
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if isinstance(key, Element):
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key = (key,)
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if isinstance(key, tuple):
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for item in key:
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item.parent = self
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self.add(item)
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return key
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return super(Element, self).__getitem__(key)
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def processExport(self, extractor):
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pass
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def add(self, element):
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if self.subElements is None:
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self.subElements = []
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self.subElements.append(element)
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def execute(self, loader):
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pass
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class ConceptElement(Element):
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elementType = 'concept'
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posArgs = ('name', 'title', 'type')
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def execute(self, loader):
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type = loader.concepts[self['type']]
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kw = dict((k, v) for k, v in self.items()
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if k not in self.posArgs)
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self.object = loader.addConcept(self['name'], self['title'], type)
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formState = self.getInstance().applyTemplate(data=kw, ignoreValidation=True)
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# simple hack for resolving interface definition:
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pi = self.get('predicateInterface')
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if pi is not None:
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adapted(self.object).predicateInterface = resolve(pi)
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def getInstance(self, omit=['title']):
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adObject = adapted(self.object)
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schemaFactory = ISchemaFactory(adObject)
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ti = IType(self.object).typeInterface or IConceptSchema
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instance = component.getAdapter(adObject, IInstance, name='editor')
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instance.template = schemaFactory(ti, manager=self, omit=omit)
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return instance
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class TypeElement(ConceptElement):
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elementType = 'type'
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posArgs = ('name', 'title')
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def __init__(self, name, title, *args, **kw):
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super(TypeElement, self).__init__(name, title, *args, **kw)
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ti = self.get('typeInterface')
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if ti:
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if not isinstance(ti, basestring):
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self['typeInterface'] = '.'.join((ti.__module__, ti.__name__))
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def execute(self, loader):
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kw = dict((k, v) for k, v in self.items()
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if k not in ('name', 'title', 'type', 'typeInterface'))
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ti = self.get('typeInterface')
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if ti:
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kw['typeInterface'] = resolve(ti)
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self.object = loader.addConcept(self['name'], self['title'],
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loader.typeConcept, **kw)
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instance = self.getInstance(omit=['title', 'typeInterface'])
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formState = instance.applyTemplate(data=kw, ignoreValidation=True)
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if ti:
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# overwrite type interface, might have been ignored in addConcept
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adapted(self.object).typeInterface = kw['typeInterface']
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class ChildElement(Element):
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elementType = 'child'
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posArgs = ('first', 'second', 'predicate', 'order', 'relevance')
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def __init__(self, *args, **kw):
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for idx, arg in enumerate(args):
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self[self.posArgs[idx]] = arg
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for k, v in kw.items():
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self[k] = v
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def execute(self, loader):
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loader.assignChild(self['first'], self['second'], self['predicate'],
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order = self.get('order') or 0,
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relevance = self.get('relevance') or 1.0)
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additionalParams = [(k, v) for k, v in self.items()
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if k not in self.posArgs]
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if additionalParams:
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pred = loader.getPredicate(self['predicate'])
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first = loader.concepts[self['first']]
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second = loader.concepts[self['second']]
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relation = first.getChildRelations([pred], child=second)[0]
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adaptedRel = adaptedRelation(relation)
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for attr, value in additionalParams:
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setattr(adaptedRel, attr, value)
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class ResourceElement(Element):
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elementType = 'resource'
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posArgs = ('name', 'title', 'type')
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def processExport(self, extractor):
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content = self.pop('data', '')
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fileFlags = 'wb'
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if (self.get('contentType', '').startswith('text/')
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and isinstance(content, unicode)):
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content = content.encode('UTF-8')
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fileFlags = 'wt'
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directory = extractor.resourceDirectory
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if not os.path.exists(directory):
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os.makedirs(directory)
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dataPath = os.path.join(directory, self['name'])
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f = open(dataPath, fileFlags)
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f.write(content)
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f.close()
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def execute(self, loader):
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type = loader.concepts[self['type']]
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kw = dict((k, v) for k, v in self.items()
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if k not in self.posArgs)
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dataPath = os.path.join(loader.resourceDirectory, self['name'])
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if os.path.exists(dataPath):
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ct = self.get('contentType', '')
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flag = ct.startswith('text/') and 'r' or 'rb'
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f = open(dataPath, flag)
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content = f.read()
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if ct.startswith('text/'):
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content = content.decode('UTF-8')
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kw['data'] = content
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f.close()
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self.object = loader.addResource(self['name'], self['title'], type, **kw)
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class ResourceRelationElement(ChildElement):
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elementType = 'resourceRelation'
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def execute(self, loader):
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loader.assignResource(self['first'], self['second'], self['predicate'],
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order = self.get('order') or 0,
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relevance = self.get('relevance') or 1.0)
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class DeassignmentElement(Element):
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elementType = 'deassign'
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posArgs = ('first', 'second', 'predicate')
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def __init__(self, *args, **kw):
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for idx, arg in enumerate(args):
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self[self.posArgs[idx]] = arg
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for k, v in kw.items():
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self[k] = v
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def execute(self, loader):
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if self.get('type') in ('child', 'concept'):
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loader.deassignChild(self['first'], self['second'], self['predicate'])
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else:
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loader.deassignResource(self['first'], self['second'], self['predicate'])
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class NodeElement(Element):
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elementType = 'node'
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posArgs = ('name', 'title', 'path', 'type')
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factory = Node
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def __init__(self, *args, **kw):
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for idx, arg in enumerate(args):
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self[self.posArgs[idx]] = arg
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for k, v in kw.items():
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self[k] = v
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def execute(self, loader):
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type = self['type']
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cont = traverse(loader.views, self['path'])
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#target = self.pop('target', None)
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kw = dict((k, v) for k, v in self.items()
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if k not in self.posArgs)
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node = loader.addNode(self['name'], self['title'], cont, type,
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factory=self.factory, **kw)
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#if target is not None:
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# targetObject = traverse(loader.context, target, None)
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# node.target = targetObject
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#self.object = node
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class LayoutNodeElement(NodeElement):
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elementType = 'layoutNode'
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factory = LayoutNode
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# element registry
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elementTypes = dict(
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type=TypeElement,
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concept=ConceptElement,
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child=ChildElement,
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resource=ResourceElement,
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resourceRelation=ResourceRelationElement,
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deassign=DeassignmentElement,
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node=NodeElement,
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layoutNode=LayoutNodeElement,
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I18NValue=I18NValue,
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)
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toplevelElements = ('type', 'concept', 'resource',
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'child', 'resourceRelation', 'node', 'deassign')
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