from list import List

class Queue(List):
	def __init__(self,data,funcs):
		List.__init__(self,data,"Queue",funcs)
		self.data = data
		self.count = len(self.data.curQ)
		self.makeLabel()


	# Returns true if we had a song to load, false otherwise
	def getNext(self):
		# Populate the queue
		if self.populated == False:
			self.populate()
		# No songs in queue, return false
		if len(self.list) == 0:
			return False
		# Queue ignores random settings and filtering, just takes next song
		self.data.curSong = self.list[0][0]
		
		# Remove file from queue and tree
		for i in range(len(self.data.curQ)):
			if self.data.curQ[i].id == self.data.curSong:
				self.data.curQ.pop(i)
				break
		self.remove(self.list.get_iter_root())
		
		# Load song and update the label
		self.filterQuick(self.string)
		self.loadSong(self.data.library.files[self.data.curSong])
		return True


	# Inselt a song into the queue
	# Updates the visible treeview and the self.data.curQ array
	def insert(self,file):
		if self.populated == False:
			self.populate()
		List.insert(self,file)
		self.data.curQ += [file]


	# Shows and hides the treeview, populates if empty
	def visible(self,func):
		List.visible(self,func)
		if (func == "show") and (self.populated == False):
			self.populate()


	# Populate the list
	def populate(self):
		for file in self.data.curQ:
			List.insert(self,file)
		List.populate(self)


	# Filters things quicker because it does not have to show/hide rows
	# This is only called for offscreen tabs
	def filterQuick(self,string):
		List.filterQuick(self,self.data.curQ,string)