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
  23         def update(self, force=False):
  24                 if not force and self._contacts:
  25                         return
  26                 oldContacts = self._contacts
  27                 oldContactIds = set(self.get_contacts())
  28
  29                 self._contacts = {}
  30                 self._populate_contacts()
  31                 newContactIds = set(self.get_contacts())
  32
  33                 self._addedContacts = newContactIds - oldContactIds
  34                 self._removedContacts = oldContactIds - newContactIds
  35                 self._changedContacts = set(
  36                         contactId
  37                         for contactId in newContactIds.intersection(oldContactIds)
  38                         if self._has_contact_changed(contactId, oldContacts)
  39                 )
  40
  41                 if self._addedContacts or self._removedContacts or self._changedContacts:
  42                         message = self, self._addedContacts, self._removedContacts, self._changedContacts
  43                         self.updateSignalHandler.stage.send(message)
  44
  45         def get_contacts(self):
  46                 return self._contacts.iterkeys()
  47
  48         def get_contact_name(self, contactId):
  49                 return self._contacts[contactId][0]
  50
  51         def get_contact_details(self, contactId):
  52                 self._populate_contact_details(contactId)
  53                 return self._get_contact_details(contactId)
  54
  55         def _populate_contacts(self):
  56                 if self._contacts:
  57                         return
  58                 contacts = self._backend.get_contacts()
  59                 for contactId, contactName in contacts:
  60                         self._contacts[contactId] = (contactName, [])
  61
  62         def _populate_contact_details(self, contactId):
  63                 if self._get_contact_details(contactId):
  64                         return
  65                 self._get_contact_details(contactId).extend(
  66                         self._backend.get_contact_details(contactId)
  67                 )
  68
  69         def _get_contact_details(self, contactId):
  70                 return self._contacts[contactId][1]
  71
  72         def _has_contact_changed(self, contactId, oldContacts):
  73                 oldContact = oldContacts[contactId]
  74                 oldContactName = oldContact[0]
  75                 oldContactDetails = oldContact[1]
  76                 if oldContactName != self.get_contact_name(contactId):
  77                         return True
  78                 if not oldContactDetails:
  79                         return False
  80                 # if its already in the old cache, purposefully add it into the new cache
  81                 return oldContactDetails != self.get_contact_details(contactId)