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# -*- 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 os
import cgi
import urllib
from mako.template import Template
import xml.dom.minidom as dom
import LastFM
import rb
from gi.repository import RB
from gi.repository import GObject, Gtk
from gi.repository import WebKit
import gettext
gettext.install('rhythmbox', RB.locale_dir())
class AlbumTab (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.props.shell_player
self.db = shell.props.db
self.buttons = buttons
self.button = Gtk.ToggleButton (label=_("Albums"))
self.ds = ds
self.view = view
self.artist = None
self.active = False
self.button.show()
self.button.set_relief (Gtk.ReliefStyle.NONE)
self.button.set_focus_on_click(False)
self.button.connect ('clicked',
lambda button: self.emit ('switch-tab', 'album'))
buttons.pack_start (self.button, True, True, 0)
def activate (self):
self.button.set_active(True)
self.active = True
self.reload ()
def deactivate (self):
self.button.set_active(False)
self.active = False
def reload (self):
entry = self.sp.get_playing_entry ()
if entry is None:
return None
artist = entry.get_string (RB.RhythmDBPropType.ARTIST)
album = entry.get_string (RB.RhythmDBPropType.ALBUM)
if self.active and artist != self.artist:
self.view.loading(artist)
self.ds.fetch_album_list (artist)
else:
self.view.load_view()
self.artist = artist
class AlbumView (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 = plugin.plugin_info.get_data_dir()
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 connect_signals (self):
self.ds.connect('albums-ready', self.album_list_ready)
def loading (self, current_artist):
self.loading_file = self.loading_template.render (
artist = current_artist,
# Translators: 'top' here means 'most popular'. %s is replaced by the artist name.
info = _("Loading top albums 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 = rb.find_plugin_file (self.plugin, 'tmpl/album-tmpl.html')
self.loading_path = rb.find_plugin_file (self.plugin, 'tmpl/loading.html')
self.album_template = Template (filename = self.path,
module_directory = self.plugin.tempdir)
self.loading_template = Template (filename = self.loading_path,
module_directory = self.plugin.tempdir)
self.styles = self.basepath + '/tmpl/main.css'
def album_list_ready (self, ds):
self.file = self.album_template.render (error = ds.get_error(),
list = ds.get_top_albums(),
artist = ds.get_artist(),
datasource = LastFM.datasource_link (self.basepath),
stylesheet = self.styles)
self.load_view ()
class AlbumDataSource (GObject.GObject):
__gsignals__ = {
'albums-ready' : (GObject.SIGNAL_RUN_LAST, GObject.TYPE_NONE, ())
}
def __init__ (self, info_cache, ranking_cache):
GObject.GObject.__init__ (self)
self.albums = None
self.error = None
self.artist = None
self.max_albums_fetched = 8
self.info_cache = info_cache
self.ranking_cache = ranking_cache
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 get_artist (self):
return self.artist
def get_error (self):
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
qartist = urllib.quote_plus (artist)
self.error = None
url = "%sartist.gettopalbums&artist=%s&api_key=%s" % (LastFM.URL_PREFIX,
qartist,
LastFM.API_KEY)
cachekey = 'lastfm:artist:gettopalbums:%s' % qartist
self.ranking_cache.fetch(cachekey, url, self.parse_album_list, artist)
def parse_album_list (self, data, artist):
if data is None:
print "Nothing fetched for %s top albums" % artist
return
try:
parsed = dom.parseString (data)
except Exception, e:
print "Error parsing album list: %s" % e
return False
lfm = parsed.getElementsByTagName ('lfm')[0]
if lfm.attributes['status'].value == 'failed':
self.error = lfm.childNodes[1].firstChild.data
self.emit ('albums-ready')
return
self.albums = []
album_nodes = parsed.getElementsByTagName ('album')
print "num albums: %d" % len(album_nodes)
if len(album_nodes) == 0:
self.error = "No albums found for %s" % artist
self.emit('albums-ready')
return
self.album_info_fetched = min (len (album_nodes) - 1, self.max_albums_fetched)
for i, album in enumerate (album_nodes):
if i >= self.album_info_fetched:
break
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))
self.albums.append ({'title' : album_name, 'images' : images })
self.fetch_album_info (artist, album_name, i)
def get_top_albums (self):
return self.albums
def fetch_album_info (self, artist, album, index):
qartist = urllib.quote_plus (artist)
qalbum = urllib.quote_plus (album.encode('utf-8'))
cachekey = "lastfm:album:getinfo:%s:%s" % (qartist, qalbum)
url = "%salbum.getinfo&artist=%s&album=%s&api_key=%s" % (LastFM.URL_PREFIX,
qartist,
qalbum,
LastFM.API_KEY)
self.info_cache.fetch(cachekey, url, self.fetch_album_tracklist, album, index)
def fetch_album_tracklist (self, data, album, index):
if data is None:
self.assemble_info(None, None, None)
try:
parsed = dom.parseString (data)
self.albums[index]['id'] = parsed.getElementsByTagName ('id')[0].firstChild.data
except Exception, e:
print "Error parsing album tracklist: %s" % e
return False
self.albums[index]['releasedate'] = self.extract(parsed.getElementsByTagName ('releasedate'),0)
self.albums[index]['summary'] = self.extract(parsed.getElementsByTagName ('summary'), 0)
cachekey = "lastfm:album:tracks:%s" % self.albums[index]['id']
url = "%splaylist.fetch&playlistURL=lastfm://playlist/album/%s&api_key=%s" % (
LastFM.URL_PREFIX, self.albums[index]['id'], LastFM.API_KEY)
self.info_cache.fetch(cachekey, url, self.assemble_info, album, index)
def assemble_info (self, data, album, index):
rv = True
if data is None:
print "nothing fetched for %s tracklist" % album
else:
try:
parsed = dom.parseString (data)
list = parsed.getElementsByTagName ('track')
tracklist = []
album_length = 0
for i, track in enumerate(list):
title = track.getElementsByTagName ('title')[0].firstChild.data
duration = int(track.getElementsByTagName ('duration')[0].firstChild.data) / 1000
album_length += duration
tracklist.append ((i, title, duration))
self.albums[index]['tracklist'] = tracklist
self.albums[index]['duration'] = album_length
except Exception, e:
print "Error parsing album playlist: %s" % e
rv = False
self.album_info_fetched -= 1
print "%s albums left to process" % self.album_info_fetched
if self.album_info_fetched == 0:
self.emit('albums-ready')
return rv
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