Hello, I'm trying to code a plugin for elisa, and I'm trying to understand
how the youtube plugin works, but I'm having some trouble understanding how
the HierarchyController works.
class YoutubeController(HierarchyController):
start_uri = MediaUri('http://gdata.youtube.com/feeds/')
def initialize(self, videos=None, uri=start_uri):
deferred = super(YoutubeController, self).initialize()
self.uri = uri
## add_feeds is a callback right? why the (self)? this is a callback
function, not a class method
def add_feeds(self):
# search
self.actions.append(SearchAction(self))
feeds_root = 'http://gdata.youtube.com/feeds/api/standardfeeds/'
feeds = [(_('Top rated'), 'top_rated'),
(_('Top favorites'), 'top_favorites'),
(_('Most viewed'), 'most_viewed'),
(_('Most popular'), 'most_popular'),
(_('Most recent'), 'most_recent')]
feed_models = []
for feed in feeds:
feed_model = YoutubeVideoFeedModel()
feed_model.title = feed[0]
feed_model.uri = MediaUri(feeds_root + feed[1])
feed_models.append(feed_model)
self.model.extend(feed_models)
## and where does this return goes to? And what exactly is it
returning?
return self
## no (self) on this one?
def resource_loaded(resource):
if isinstance(resource, YoutubeVideoListModel):
self.model.extend(resource.videos)
return self
def load_resource(self):
resource, get_deferred =
application.resource_manager.get(self.uri)
return get_deferred
def extend_model(self, videos):
self.model.extend(videos)
return self
# A list of videos
if videos is not None:
deferred.addCallback(extend_model, videos)
elif uri == self.start_uri:
# List of the feeds
deferred.addCallback(add_feeds)
else:
# One particular feed
deferred.addCallback(load_resource)
## shouldn't resource_loaded have 1 argument? (resource)
deferred.addCallback(resource_loaded)
return deferred
