ee7a84b6d5
git-svn-id: svn://svn.cy55.de/Zope3/src/loops/trunk@1022 fd906abe-77d9-0310-91a1-e0d9ade77398
108 lines
3.1 KiB
Python
108 lines
3.1 KiB
Python
#
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# Copyright (c) 2005 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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Definition of the Concept class.
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$Id$
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"""
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from zope.app import zapi
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from zope.app.container.btree import BTreeContainer
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from zope.app.container.contained import Contained
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from zope.app.file.image import Image as BaseMediaAsset
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from zope.interface import implements
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from persistent import Persistent
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from cStringIO import StringIO
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from cybertools.relation.registry import getRelations
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from interfaces import IResource, IDocument, IMediaAsset
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from interfaces import IResourceManager, IResourceManagerContained
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from interfaces import ILoopsContained
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class Resource(Contained, Persistent):
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implements(IResource, IResourceManagerContained)
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_title = u''
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def getTitle(self): return self._title
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def setTitle(self, title): self._title = title
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title = property(getTitle, setTitle)
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_contentType = ''
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def setContentType(self, contentType):
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if contentType:
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self._contentType = contentType
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def getContentType(self): return self._contentType
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contentType = property(getContentType, setContentType)
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def getLoopsRoot(self):
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return zapi.getParent(self).getLoopsRoot()
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def getClients(self, relationships=None):
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rels = getRelations(second=self, relationships=relationships)
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return [r.first for r in rels]
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def __init__(self, title=u''):
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self.title = title
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_size = _width = _height = 0
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class Document(Resource):
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implements(IDocument)
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_data = u''
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def setData(self, data): self._data = data
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def getData(self): return self._data
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data = property(getData, setData)
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class MediaAsset(Resource, BaseMediaAsset):
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implements(IMediaAsset)
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def __init__(self, title=u''):
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super(MediaAsset, self).__init__()
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self.title = title
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def _setData(self, data):
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dataFile = StringIO(data) # let File tear it into pieces
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super(MediaAsset, self)._setData(dataFile)
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if not self.contentType:
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self.guessContentType(data)
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data = property(BaseMediaAsset._getData, _setData)
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def guessContentType(self, data):
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if not isinstance(data, str): # seems to be a file object
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data = data.read(20)
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if data.startswith('%PDF'):
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self.contentType = 'application/pdf'
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class ResourceManager(BTreeContainer):
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implements(IResourceManager, ILoopsContained)
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def getLoopsRoot(self):
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return zapi.getParent(self)
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