git.maemo.org Git - theonering/blob - src/gvoice/addressbook.py

   1 #!/usr/bin/python
   2
   3
   4 import logging
   5
   6 import util.coroutines as coroutines
   7
   8
   9 _moduleLogger = logging.getLogger("gvoice.addressbook")
  10
  11
  12 class Addressbook(object):
  13
  14         def __init__(self, backend):
  15                 self._backend = backend
  16                 self._contacts = {}
  17                 self._addedContacts = set()
  18                 self._removedContacts = set()
  19                 self._changedContacts = set()
  20
  21                 self.updateSignalHandler = coroutines.CoTee()
  22                 self.update()
  23
  24         def update(self, force=False):
  25                 if not force and self._contacts:
  26                         return
  27                 oldContacts = self._contacts
  28                 oldContactIds = set(self.get_contacts())
  29
  30                 self._contacts = {}
  31                 self._populate_contacts()
  32                 newContactIds = set(self.get_contacts())
  33
  34                 self._addedContacts = newContactIds - oldContactIds
  35                 self._removedContacts = oldContactIds - newContactIds
  36                 self._changedContacts = set(
  37                         contactId
  38                         for contactId in newContactIds.intersection(oldContactIds)
  39                         if self._has_contact_changed(contactId, oldContacts)
  40                 )
  41
  42                 if self._addedContacts or self._removedContacts or self._changedContacts:
  43                         message = self, self._addedContacts, self._removedContacts, self._changedContacts
  44                         self.updateSignalHandler.stage.send(message)
  45
  46         def get_contacts(self):
  47                 return self._contacts.iterkeys()
  48
  49         def get_contact_name(self, contactId):
  50                 return self._contacts[contactId][0]
  51
  52         def get_contact_details(self, contactId):
  53                 self._populate_contact_details(contactId)
  54                 return self._get_contact_details(contactId)
  55
  56         def _populate_contacts(self):
  57                 if self._contacts:
  58                         return
  59                 contacts = self._backend.get_contacts()
  60                 for contactId, contactName in contacts:
  61                         self._contacts[contactId] = (contactName, [])
  62
  63         def _populate_contact_details(self, contactId):
  64                 if self._get_contact_details(contactId):
  65                         return
  66                 self._get_contact_details(contactId).extend(
  67                         self._backend.get_contact_details(contactId)
  68                 )
  69
  70         def _get_contact_details(self, contactId):
  71                 return self._contacts[contactId][1]
  72
  73         def _has_contact_changed(self, contactId, oldContacts):
  74                 oldContact = oldContacts[contactId]
  75                 oldContactName = oldContact[0]
  76                 oldContactDetails = oldContact[1]
  77                 if oldContactName != self.get_contact_name(contactId):
  78                         return True
  79                 if not oldContactDetails:
  80                         return False
  81                 # if its already in the old cache, purposefully add it into the new cache
  82                 return oldContactDetails != self.get_contact_details(contactId)