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