[rhythmbox] context: check that the user has a last.fm account before fetching data

[Jonathan Matthew <jmatthew src gnome org>]

commit fc4c5cd340c6198f920aaadc6fe72729a5b397ad
Author: Jonathan Matthew <jonathan fibula d14n org>
Date:   Sun Nov 1 09:37:09 2009 +1000

    context: check that the user has a last.fm account before fetching data
    
    last.fm's terms of service require that we only make last.fm data available
    to registered last.fm users.  Since any such check that we do can be trivially
    removed by any user, we don't put much effort into it.

 plugins/context/context/AlbumTab.py  |    5 +++++
 plugins/context/context/ArtistTab.py |    8 ++++++++
 2 files changed, 13 insertions(+), 0 deletions(-)
---
diff --git a/plugins/context/context/AlbumTab.py b/plugins/context/context/AlbumTab.py
index bda03a9..ff0ae30 100644
--- a/plugins/context/context/AlbumTab.py
+++ b/plugins/context/context/AlbumTab.py
@@ -162,6 +162,11 @@ class AlbumDataSource (gobject.GObject):
         return self.error
 
     def fetch_album_list (self, artist):
+        if LastFM.user_has_account() is False:
+            self.error = LastFM.NO_ACCOUNT_ERROR
+            self.emit ('albums-ready')
+            return
+
         self.artist = artist
         self.error  = None
         url = "%sartist.gettopalbums&artist=%s&api_key=%s" % (LastFM.URL_PREFIX,
diff --git a/plugins/context/context/ArtistTab.py b/plugins/context/context/ArtistTab.py
index 5d1f776..dad048c 100644
--- a/plugins/context/context/ArtistTab.py
+++ b/plugins/context/context/ArtistTab.py
@@ -199,6 +199,9 @@ class ArtistDataSource (gobject.GObject):
             return None
 
     def fetch_top_tracks (self, artist):
+        if LastFM.user_has_account() is False:
+            return
+
         artist = artist.replace (" ", "+")
         function = self.artist['top_tracks']['function']
         cache = self.artist['top_tracks']['cache']
@@ -215,6 +218,11 @@ class ArtistDataSource (gobject.GObject):
         before any of the get_* methods.
         """
         self.current_artist = artist
+        if LastFM.user_has_account() is False:
+            self.error = LastFM.NO_ACCOUNT_ERROR
+            self.emit ('artist-info-ready')
+            return
+
         self.error = None
         artist = artist.replace(" ", "+")
         for key, value in self.artist.items():