add new plugin. mpris2 support

mpris2_support/__init__.py

+from mpris2_support import Mpris2Plugin

mpris2_support/manifest.ini

+[info]
+name: MPRIS2 support
+short_name: mpris2_support
+version: 0.1
+description: MPRIS2 support
+authors = Denis Fomin <fominde@gmail.com>
+homepage = http://trac-plugins.gajim.org/wiki

mpris2_support/mpris2_support.py

+# -*- coding: utf-8 -*-
+
+import gtk
+import gobject
+
+from common import gajim
+from plugins import GajimPlugin
+from plugins.helpers import log_calls
+from plugins.plugin import GajimPluginException
+from common import dbus_support
+
+if dbus_support.supported:
+    from music_track_listener import MusicTrackInfo, MusicTrackListener
+
+class Mpris2Plugin(GajimPlugin):
+    @log_calls('Mpris2Plugin')
+    def init(self):
+        self.description = _('MPRIS2 support')
+        self.config_dialog = None
+        self.artist = self.title = self.source = ''
+        self.listener = MusicTrackListener().get()
+
+    @log_calls('NowListenPlugin')
+    def activate(self):
+        self.bus = dbus_support.session_bus.SessionBus()
+        self.bus.add_signal_receiver(self.properties_changed,
+            "PropertiesChanged", "org.freedesktop.DBus.Properties")
+
+    @log_calls('Mpris2Plugin')
+    def deactivate(self):
+        self.bus.remove_signal_receiver(self.properties_changed,
+            "PropertiesChanged", "org.freedesktop.DBus.Properties")
+
+    def properties_changed(self,*args,**kw):
+        if args[0] != 'org.mpris.MediaPlayer2.Player':
+            return
+        if 'PlaybackStatus' in args[1]:
+            if args[1]['PlaybackStatus'] in ['Paused', 'Stopped']:
+                self.title = self.artist = self.source = ''
+                self.listener.emit('music-track-changed', None)
+            return
+        if 'Metadata' not in args[1]:
+            return
+
+        data = args[1]['Metadata']
+        info = MusicTrackInfo()
+        info.title = data.get("xesam:title", '')
+        info.album = data.get("xesam:album", '')
+        info.artist = data.get("xesam:artist", [''])[0]
+        info.duration = int(data.get('mpris:length', 0))
+        info.track_number = int(data.get('xesam:trackNumber', 0))
+        self.listener.emit('music-track-changed', info)