vcs.maemo.org Git - hermes/blob - package/src/org/maemo/hermes/engine/facebook/provider.py

   1 import gnome.gconf
   2 import gtk, hildon
   3 import org.maemo.hermes.engine.provider
   4 from org.maemo.hermes.engine.facebook.service import Service
   5 from org.maemo.hermes.engine.facebook.api import FacebookApi
   6 import oauth2
   7
   8 class Provider(org.maemo.hermes.engine.provider.Provider):
   9     """Facebook provider for Hermes.
  10
  11        This requires two gconf paths to contain Facebook application keys:
  12            /apps/maemo/hermes/facebook_app
  13            /apps/maemo/hermes/facebook_secret
  14
  15        Copyright (c) Andrew Flegg <andrew@bleb.org> 2010.
  16        Released under the Artistic Licence."""
  17
  18     # -----------------------------------------------------------------------
  19     def __init__(self):
  20         """Initialise the provider, and ensure the environment is going to work."""
  21
  22         self._gc = gnome.gconf.client_get_default()
  23
  24         key_app    = self._gc.get_string('/apps/maemo/hermes/facebook_key')
  25         key_secret = self._gc.get_string('/apps/maemo/hermes/facebook_secret')
  26         if key_app is None or key_secret is None:
  27             raise Exception('No Facebook application keys found. Installation error.')
  28
  29         access_token = self._gc.get_string('/apps/maemo/hermes/facebook_access_token')
  30         self.oauth = oauth2.OAuth2(key_app, key_secret, access_token)
  31         self.api = FacebookApi(self.oauth)
  32
  33
  34     # -----------------------------------------------------------------------
  35     def get_name(self):
  36         """Return the display name of this service. An icon, of with the lower-case,
  37            all-alphabetic version of this name is expected to be provided."""
  38
  39         return 'Facebook'
  40
  41
  42     # -----------------------------------------------------------------------
  43     def get_account_detail(self):
  44         """Return the email address associated with the user, if available."""
  45
  46         return self._gc.get_string('/apps/maemo/hermes/facebook_user')
  47
  48
  49     # -----------------------------------------------------------------------
  50     def has_preferences(self):
  51         """Whether or not this provider has any preferences. If it does not,
  52            open_preferences must NOT be called; as the behaviour is undetermined."""
  53
  54         return True
  55
  56
  57     # -----------------------------------------------------------------------
  58     def open_preferences(self, parent):
  59         """Open the preferences for this provider as a child of the 'parent' widget."""
  60
  61         dialog = gtk.Dialog(self.get_name(), parent)
  62         dialog.add_button(_('Disable'), gtk.RESPONSE_NO)
  63         enable = dialog.add_button(_('Enable'), gtk.RESPONSE_YES)
  64
  65         button = hildon.Button(gtk.HILDON_SIZE_FINGER_HEIGHT,
  66                                hildon.BUTTON_ARRANGEMENT_VERTICAL)
  67         self._handle_button(None, button, enable)
  68         button.connect('clicked', self._handle_button, button, enable)
  69         dialog.vbox.add(button)
  70
  71         checkbox = hildon.CheckButton(gtk.HILDON_SIZE_FINGER_HEIGHT)
  72         checkbox.set_label(_('Create birthday-only contacts'))
  73         checkbox.set_active(self._gc.get_bool('/apps/maemo/hermes/facebook_birthday_only'))
  74         dialog.vbox.add(checkbox)
  75         dialog.vbox.add(gtk.Label(""))
  76
  77         dialog.show_all()
  78         result = dialog.run()
  79         dialog.hide()
  80         if result == gtk.RESPONSE_CANCEL or result == gtk.RESPONSE_DELETE_EVENT:
  81             return None
  82
  83         self._gc.set_bool('/apps/maemo/hermes/facebook_birthday_only', checkbox.get_active())
  84         return result == gtk.RESPONSE_YES
  85
  86
  87     # -----------------------------------------------------------------------
  88     def _handle_button(self, e, button, enable):
  89         """Ensure the button state is correct."""
  90
  91         authenticated = self._gc.get_string('/apps/maemo/hermes/facebook_access_token') is not None
  92         if e is not None:
  93             if authenticated:
  94                 self._gc.unset('/apps/maemo/hermes/facebook_access_token')
  95             else:
  96                 self.api.authenticate()
  97                 self._gc.set_string('/apps/maemo/hermes/facebook_access_token', self.oauth.get_access_token())
  98                 self._gc.set_string('/apps/maemo/hermes/facebook_user', self.api.get_user())
  99
 100             authenticated = self._gc.get_string('/apps/maemo/hermes/facebook_access_token') is not None
 101
 102         button.set_title(authenticated and _("Clear authorisation") or _("Authorise"))
 103         enable.set_sensitive(authenticated)
 104
 105
 106     # -----------------------------------------------------------------------
 107     def service(self, gui_callback):
 108         """Return a service instance."""
 109
 110         self._gui = gui_callback
 111         return Service(self.get_id(), self.api, self._gc.get_bool('/apps/maemo/hermes/facebook_birthday_only'))