aa43e289f8
git-svn-id: svn://svn.cy55.de/Zope3/src/cybertools/trunk@3150 fd906abe-77d9-0310-91a1-e0d9ade77398
80 lines
2.2 KiB
Python
80 lines
2.2 KiB
Python
#
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# Copyright (c) 2009 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 (sample) implementations for links and link management
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$Id$
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"""
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from zope.interface import implements
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from cybertools.wiki.interfaces import ILink, ILinkManager
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class LinkManager(object):
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""" A very basic link manager implementation.
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"""
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implements(ILinkManager)
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def __init__(self):
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self.links = {}
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self.linksBySource = {}
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def createLink(self, name, source, target, **kw):
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link = Link(name, source, target, **kw)
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link.manager = self
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id = self.generateLinkIdentifier(link)
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self.linksBySource[source] = self.links[id] = link
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def removeLink(self, link):
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if link.identifier in self.links:
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link.manager = None
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del self.links[link.identifier]
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def generateLinkIdentifier(self, link):
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identifier = 'l%07i' % (max(self.links.keys() or [0]) + 1)
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link.identifier = identifier
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return identifier
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class Link(object):
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implements(ILink)
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identifier = None
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manager = None
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def __init__(self, name, source, target, **kw):
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self.name = name
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self.source = source
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self.target = target
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for k, v in kw.items():
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if k not in ILink:
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raise AttributeError(k)
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setattr(self, k, v)
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def getManager(self):
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return self.manager
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def __getattr__(self, attr):
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if attr not in ILink:
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raise AttributeError(attr)
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return getattr(self, attr, None)
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