Source Code for Module advene.model.cam.list

 1  from advene.model.cam.consts import CAMSYS_TYPE 
 2  from advene.model.cam.element import CamElementMixin 
 3  from advene.model.cam.group import CamGroupMixin 
 4  import advene.model.cam.util.bookkeeping as bk 
 5  from advene.model.core.list import List as CoreList 
 6   
 7 -class List(CoreList, CamGroupMixin, CamElementMixin) : 
 8   
 9      @classmethod 
10 -    def instantiate(cls, owner, id, *args): 
11          r = super(List, cls).instantiate(owner, id, *args) 
12          r._transtype() 
13          r._self_connect("modified-items", bk.update_element) 
14          return r 
15   
16 -    def __iter__(self): 
17          # necessary to override CamGroupMixin __iter__ 
18          return CoreList.__iter__(self) 
19   
20 -    def _set_camsys_type(self, value, val_is_idref=False): 
21          super(List, self)._set_camsys_type(value, val_is_idref) 
22          self._transtype(value) 
23   
24 -    def _transtype(self, systype=None): 
25          """ 
26          Transtypes this List to Schema if its systype is 'schema'. 
27   
28          If systype is omitted, it is retrieved from the metadata. 
29          """ 
30          if systype is None: 
31              systype = self.get_meta(CAMSYS_TYPE, None) 
32          if systype == "schema": 
33              newtype = Schema 
34          else: 
35              newtype = List 
36          if self.__class__ is not newtype: 
37              self.__class__ = newtype 
38   
39  List.make_metadata_property(CAMSYS_TYPE, "system_type", default=None) 
40   
41 -class Schema(List): 
42      """ 
43      The class of annotation types. 
44      """ 
45      # This class is automatically transtyped from List (and back) when  
46      # CAMSYS_TYPE is modified. See List.set_meta 
47      pass 
48