from song import Song

# Use to define various operations
class Operations:
	def __init__(self):
		self.song = None
		self.plist = None
		self.library = None


	# Begin playback
	def play(self,widget,data):
		if self.song == None:	
			return
		self.song.play()


	# Pause playback
	def pause(self,widget,data):
		if self.song == None:
			return
		self.song.pause()


	# Advance to the next song
	def next(self,widget,data):
		# Close open songs
		if self.song != None:
			self.song.close()
		# Get next song
		index = self.plist.next()
		if index > -1:
			self.song = None
			info = self.library.data.files[index]
			self.song = Song(info,self.next)
		if index > -2:
			self.song.play()


	# Mark progress on the progress bar
	def markProgress(self,widget,data):
		self.song.curTime()
		widget.set_fraction(float(self.song.current)/float(self.song.total))
		#print float(self.song.current)/float(self.song.total)
		return True