[Rhythmbox-devel] RB Context Pane artist infotmation tab i18n
- From: Loris Zinsou <the-lz-himself orange fr>
- To: rhythmbox-devel gnome org
- Subject: [Rhythmbox-devel] RB Context Pane artist infotmation tab i18n
- Date: Wed, 24 Feb 2010 21:30:01 +0100
Hi everybody,
I just added some few lines of Python code
to /usr/lib/rhythmbox/plugins/context/ArtistTab.py , to add support for
languages other than English.
It first uses "import locale" and then gets the alpha2 language string
to put it into the LastFM API querry in fetch_artist_data().
Tested on English and French... Perhaps it needs some more tests, but i
do not see how it could contain a bug...
It's a really quick patch, so i don't know whether anybody here were
planning to do it another way.
Thanks for reding me.
# -*- Mode: python; coding: utf-8; tab-width: 8; indent-tabs-mode: t; -*-
#
# Copyright (C) 2009 John Iacona
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2, or (at your option)
# any later version.
#
# The Rhythmbox authors hereby grant permission for non-GPL compatible
# GStreamer plugins to be used and distributed together with GStreamer
# and Rhythmbox. This permission is above and beyond the permissions granted
# by the GPL license by which Rhythmbox is covered. If you modify this code
# you may extend this exception to your version of the code, but you are not
# obligated to do so. If you do not wish to do so, delete this exception
# statement from your version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
import rb, rhythmdb
import gtk, gobject
import re, os
import cgi
import urllib
import xml.dom.minidom as dom
import LastFM
import locale
import webkit
from mako.template import Template
class ArtistTab (gobject.GObject):
__gsignals__ = {
'switch-tab' : (gobject.SIGNAL_RUN_LAST, gobject.TYPE_NONE,
(gobject.TYPE_STRING,))
}
def __init__ (self, shell, buttons, ds, view):
gobject.GObject.__init__ (self)
self.shell = shell
self.sp = shell.get_player ()
self.db = shell.get_property ('db')
self.buttons = buttons
self.button = gtk.ToggleButton (_("Artist"))
self.datasource = ds
self.view = view
self.artist = None
self.active = False
self.button.show()
self.button.set_relief( gtk.RELIEF_NONE )
self.button.set_focus_on_click(False)
self.button.connect ('clicked',
lambda button : self.emit('switch-tab', 'artist'))
buttons.pack_start (self.button, True, True)
def activate (self):
print "activating Artist Tab"
self.button.set_active(True)
self.active = True
self.reload ()
def deactivate (self):
print "deactivating Artist Tab"
self.button.set_active(False)
self.active = False
def reload (self):
entry = self.sp.get_playing_entry ()
if entry is None:
print "Nothing playing"
return None
artist = self.db.entry_get (entry, rhythmdb.PROP_ARTIST)
if self.active and self.artist != artist:
self.datasource.fetch_artist_data (artist)
self.view.loading (artist)
else:
self.view.load_view()
self.artist = artist
class ArtistView (gobject.GObject):
def __init__ (self, shell, plugin, webview, ds):
gobject.GObject.__init__ (self)
self.webview = webview
self.ds = ds
self.shell = shell
self.plugin = plugin
self.file = ""
plugindir = os.path.split(plugin.find_file ('context.rb-plugin'))[0]
self.basepath = "file://" + urllib.pathname2url (plugindir)
self.load_tmpl ()
self.connect_signals ()
def load_view (self):
self.webview.load_string (self.file, 'text/html', 'utf-8', self.basepath)
def loading (self, current_artist):
self.loading_file = self.loading_template.render (
artist = current_artist,
info = _("Loading biography for %s") % current_artist,
song = "",
basepath = self.basepath)
self.webview.load_string (self.loading_file, 'text/html', 'utf-8', self.basepath)
def load_tmpl (self):
self.path = self.plugin.find_file('tmpl/artist-tmpl.html')
self.loading_path = self.plugin.find_file ('tmpl/loading.html')
self.template = Template (filename = self.path, module_directory = '/tmp/context/')
self.loading_template = Template (filename = self.loading_path, module_directory = '/tmp/context')
self.styles = self.basepath + '/tmpl/main.css'
def connect_signals (self):
self.air_id = self.ds.connect ('artist-info-ready', self.artist_info_ready)
def artist_info_ready (self, ds):
# Can only be called after the artist-info-ready signal has fired.
# If called any other time, the behavior is undefined
try:
info = ds.get_artist_info ()
small, med, big = info['images'] or (None, None, None)
summary, full_bio = info['bio'] or (None, None)
self.file = self.template.render (artist = ds.get_current_artist (),
error = ds.get_error (),
image = med,
fullbio = full_bio,
shortbio = summary,
datasource = LastFM.datasource_link (self.basepath),
stylesheet = self.styles )
self.load_view ()
except Exception, e:
print "Problem in info ready: %s" % e
class ArtistDataSource (gobject.GObject):
__gsignals__ = {
'artist-info-ready' : (gobject.SIGNAL_RUN_LAST, gobject.TYPE_NONE, ()),
'artist-similar-ready' : (gobject.SIGNAL_RUN_LAST, gobject.TYPE_NONE, ()),
'artist-top-tracks-ready' : (gobject.SIGNAL_RUN_LAST, gobject.TYPE_NONE, ()),
'artist-top-albums-ready' : (gobject.SIGNAL_RUN_LAST, gobject.TYPE_NONE, ()),
}
def __init__ (self, info_cache, ranking_cache):
gobject.GObject.__init__ (self)
self.current_artist = None
self.error = None
self.artist = {
'info' : {
'data' : None,
'signal' : 'artist-info-ready',
'function' : 'getinfo',
'cache' : info_cache,
'parsed' : False,
},
'similar' : {
'data' : None,
'signal' : 'artist-similar-ready',
'function' : 'getsimilar',
'cache' : info_cache,
'parsed' : False,
},
'top_albums' : {
'data' : None,
'signal' : 'artist-top-albums-ready',
'function' : 'gettopalbums',
'cache' : ranking_cache,
'parsed' : False,
},
'top_tracks' : {
'data' : None,
'signal' : 'artist-top-tracks-ready',
'function' : 'gettoptracks',
'cache' : ranking_cache,
'parsed' : False,
},
}
def extract (self, data, position):
"""
Safely extract the data from an xml node. Returns data
at position or None if position does not exist
"""
try:
return data[position].firstChild.data
except Exception, e:
return None
def fetch_top_tracks (self, artist):
if LastFM.user_has_account() is False:
return
artist = urllib.quote_plus (artist)
function = self.artist['top_tracks']['function']
cache = self.artist['top_tracks']['cache']
cachekey = "lastfm:artist:%s:%s" % (function, artist)
url = '%sartist.%s&artist=%s&api_key=%s' % (LastFM.URL_PREFIX,
function, artist, LastFM.API_KEY)
cache.fetch(cachekey, url, self.fetch_artist_data_cb, self.artist['top_tracks'])
def fetch_artist_data (self, artist):
"""
Initiate the fetching of all artist data. Fetches artist info, similar
artists, artist top albums and top tracks. Downloads XML files from last.fm
and saves as parsed DOM documents in self.artist dictionary. Must be called
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
language_string = locale.setlocale(locale.LC_ALL, '')
language_alpha2 = language_string[:2]
artist = urllib.quote_plus (artist)
for key, value in self.artist.items():
cachekey = "lastfm:artist:%s:%s" % (value['function'], artist)
url = '%sartist.%s&artist=%s&lang=%s&api_key=%s' % (LastFM.URL_PREFIX,
value['function'], artist, language_alpha2, LastFM.API_KEY)
value['cache'].fetch(cachekey, url, self.fetch_artist_data_cb, value)
def fetch_artist_data_cb (self, data, category):
if data is None:
print "no data fetched for artist %s" % category['function']
return
try:
category['data'] = dom.parseString (data)
category['parsed'] = False
self.emit (category['signal'])
except Exception, e:
print "Error parsing artist %s: %s" % (category['function'], e)
return False
def get_current_artist (self):
return self.current_artist
def get_error (self):
return self.error
def get_top_albums (self):
if not self.artist['top_albums']['parsed']:
albums = []
for album in self.artist['top_albums']['data'].getElementsByTagName ('album'):
album_name = self.extract(album.getElementsByTagName ('name'), 0)
imgs = album.getElementsByTagName ('image')
images = self.extract(imgs, 0), self.extract(imgs, 1), self.extract(imgs,2)
albums.append ((album_name, images))
self.artist['top_albums']['data'] = albums
self.artist['top_albums']['parsed'] = True
return self.artist['top_albums']['data']
def get_similar_artists (self):
"""
Returns a list of similar artists
"""
data = self.artist['similar']['data']
if data is None:
return None
if not self.artist['similar']['parsed']:
lst = []
for node in data.getElementsByTagName ('artist'):
artist = self.extract(node.getElementsByTagName('name'), 0)
similar = self.extract(node.getElementsByTagName('match') ,0)
image = self.extract(node.getElementsByTagName('image'), 0)
lst.append ((artist, similar, image))
data = lst
self.artist['similar']['parsed'] = True
self.artist['similar']['data'] = data
return data
def get_artist_images (self):
"""
Returns tuple of image url's for small, medium, and large images.
"""
data = self.artist['info']['data']
if data is None:
return None
images = data.getElementsByTagName ('image')
return self.extract(images,0), self.extract(images,1), self.extract(images,2)
def get_artist_bio (self):
"""
Returns tuple of summary and full bio
"""
data = self.artist['info']['data']
if data is None:
return None
if not self.artist['info']['parsed']:
content = self.extract(data.getElementsByTagName ('content'), 0)
summary = self.extract(data.getElementsByTagName ('summary'), 0)
return summary, content
return self.artist['info']['data']['bio']
def get_artist_info (self):
"""
Returns the dictionary { 'images', 'bio' }
"""
if not self.artist['info']['parsed']:
images = self.get_artist_images()
bio = self.get_artist_bio()
self.artist['info']['data'] = { 'images' : images,
'bio' : bio }
self.artist['info']['parsed'] = True
return self.artist['info']['data']
def get_top_tracks (self):
"""
Returns a list of the top track titles
"""
data = self.artist['top_tracks']['data']
if data is None:
return None
if not self.artist['top_tracks']['parsed']:
tracks = []
for track in data.getElementsByTagName ('track'):
name = self.extract(track.getElementsByTagName('name'), 0)
tracks.append (name)
self.artist['top_tracks']['data'] = tracks
self.artist['top_tracks']['parsed'] = True
return self.artist['top_tracks']['data']
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