Change lable to 'pause' in the play button when something is playing

src/controller/buffers.py

@@ -632,9 +632,12 @@ class audioBuffer(feedBuffer):
 	def connect_events(self):
 		widgetUtils.connect_event(self.tab.play, widgetUtils.BUTTON_PRESSED, self.play_audio)
 		widgetUtils.connect_event(self.tab.play_all, widgetUtils.BUTTON_PRESSED, self.play_all)
+		pub.subscribe(self.change_label, "playback-changed")
 		super(audioBuffer, self).connect_events()
 
 	def play_audio(self, *args, **kwargs):
+		if player.player.stream != None:
+			return player.player.pause()
 		selected = self.tab.list.get_selected()
 		if selected == -1:
 			selected = 0
@@ -778,6 +781,16 @@ class audioBuffer(feedBuffer):
 		url = "https://vk.com/audio{user_id}_{post_id}".format(user_id=post["owner_id"], post_id=post["id"])
 		webbrowser.open_new_tab(url)
 
+	def change_label(self, stopped):
+		if hasattr(self.tab, "play"):
+			if stopped == False:
+				self.tab.play.SetLabel(_("P&ause"))
+			else:
+				self.tab.play.SetLabel(_("P&lay"))
+
+	def __del__(self):
+		pub.unsubscribe(self.change_label, "playback-changed")
+
 class audioAlbum(audioBuffer):
 	""" this buffer was supposed to be used with audio albums
 	but is deprecated as VK removed its audio support for third party apps."""

src/presenters/player.py

@@ -55,6 +55,18 @@ class audioPlayer(object):
 		pub.subscribe(self.play_previous, "play-previous")
 		pub.subscribe(self.seek, "seek")
 
+	# Stopped has a special function here, hence the decorator
+	# when stopped will be set to True, it will send a pubsub event to inform other parts of the application about the status change.
+	# this is useful for changing labels between play and pause, and so on, in buttons.
+	@property
+	def stopped(self):
+		return self._stopped
+
+	@stopped.setter
+	def stopped(self, value):
+		self._stopped = value
+		pub.sendMessage("playback-changed", stopped=value)
+
 	def play(self, object, set_info=True, fresh=False):
 		""" Play an URl Stream.
 		@object dict: typically an audio object as returned by VK, with a "url" component which must be a valid URL to a media file.