lightbox.py

   1 # -*- coding: utf-8 -*-
   2 ############################################################
   3 # Copyright © 2005-2008  Benoît PIN <benoit.pin@ensmp.fr>  #
   4 # Plinn - http://plinn.org                                 #
   5 #                                                          #
   6 # This program is free software; you can redistribute it   #
   7 # and/or modify it under the terms of the Creative Commons #
   8 # "Attribution-Noncommercial 2.0 Generic"                  #
   9 # http://creativecommons.org/licenses/by-nc/2.0/           #
  10 ############################################################
  11 """ Lightboxes contains references to images.
  12     References are made with CMFUid stuff.
  13 """
  14
  15 from Globals import InitializeClass
  16 from AccessControl import ClassSecurityInfo
  17 from Products.CMFCore.permissions import View, ModifyPortalContent
  18 from Products.CMFCore.PortalContent import PortalContent
  19 from Products.CMFDefault.DublinCore import DefaultDublinCoreImpl
  20 from zope.component.factory import Factory
  21
  22 class Lightbox( PortalContent, DefaultDublinCoreImpl):
  23         "lightbox holds references to photos"
  24
  25         security = ClassSecurityInfo()
  26
  27         def __init__( self, id, title='', uids=[], description=''):
  28                 DefaultDublinCoreImpl.__init__(self)
  29                 self.id=id
  30                 self.uids = tuple(uids)
  31                 self._editMetadata(title=title, description=description)
  32
  33         security.declareProtected(View, 'getUidList')
  34         def getUidList(self):
  35                 return list(self.uids)
  36
  37         security.declareProtected(ModifyPortalContent, 'append')
  38         def append(self, uid):
  39                 if uid not in self.uids :
  40                         self.uids = self.uids  + (uid,)
  41                         self.notifyModified()
  42                         self.reindexObject(idxs=['modified'])
  43                         return True
  44                 else :
  45                         return False
  46
  47         security.declareProtected(ModifyPortalContent, 'extend')
  48         def extend(self, uids):
  49                 already = 0
  50                 new = []
  51                 for uid in uids :
  52                         if uid not in self.uids :
  53                                 new.append(uid)
  54                         else :
  55                                 already = already + 1
  56                 self.uids = self.uids + tuple(new)
  57                 if len(already < uids) :
  58                         self.notifyModified()
  59                         self.reindexObject(idxs=['modified'])
  60                 return already
  61
  62         security.declareProtected(ModifyPortalContent, 'pop')
  63         def pop(self, index=None):
  64                 i = index
  65                 if i is None :
  66                         i = len(self.uids) -1
  67
  68                 self.uids = self.uids[:i] + self.uids[i+1:]
  69
  70                 self.notifyModified()
  71                 self.reindexObject(idxs=['modified'])
  72
  73         security.declareProtected(ModifyPortalContent, 'remove')
  74         def remove(self, value):
  75                 for i, v in enumerate(self.uids) :
  76                         if value == v :
  77                                 self.pop(i)
  78                                 break
  79                 else :
  80                         return
  81                 self.notifyModified()
  82                 self.reindexObject(idxs=['modified'])
  83
  84 InitializeClass(Lightbox)
  85
  86 LightboxFactory = Factory(Lightbox)