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                 message = self, self._addedContacts, self._removedContacts, self._changedContacts
  42                 self.updateSignalHandler.stage.send(message)
  43
  44         def get_contacts(self):
  45                 return self._contacts.iterkeys()
  46
  47         def get_contact_name(self, contactId):
  48                 return self._contacts[contactId][0]
  49
  50         def get_contact_details(self, contactId):
  51                 self._populate_contact_details(contactId)
  52                 return self._get_contact_details(contactId)
  53
  54         def _populate_contacts(self):
  55                 if self._contacts:
  56                         return
  57                 contacts = self._backend.get_contacts()
  58                 for contactId, contactName in contacts:
  59                         self._contacts[contactId] = (contactName, {})
  60
  61         def _populate_contact_details(self, contactId):
  62                 if self._get_contact_details(contactId):
  63                         return
  64                 self._get_contact_details(contactId).update(
  65                         self._backend.get_contact_details(contactId)
  66                 )
  67
  68         def _get_contact_details(self, contactId):
  69                 return self._contacts[contactId][1]
  70
  71         def _has_contact_changed(self, contactId, oldContacts):
  72                 oldContact = oldContacts[contactId]
  73                 oldContactName = oldContact[0]
  74                 oldContactDetails = oldContact[1]
  75                 if oldContactName != self.get_contact_name(contactId):
  76                         return True
  77                 if not oldContactDetails[1]:
  78                         return False
  79                 # if its already in the old cache, purposefully add it into the new cache
  80                 return oldContactDetails != self.get_contact_details(contactId)