from GUIComponent import *
from VariableText import *
from VariableValue import *

from enigma import iPlayableService
from enigma import eLabel, eSlider, eTimer

class PerServiceDisplay(GUIComponent, VariableText):
	"""Mixin for building components which display something which changes on navigation events, for example "service name" """
	
	def __init__(self, navcore, eventmap):
		GUIComponent.__init__(self)
		VariableText.__init__(self)
		self.eventmap = eventmap
		self.navcore = navcore
		self.navcore.event.append(self.event)
		self.poll_timer = eTimer()
		self.poll_timer.timeout.get().append(self.poll)
		
		# start with stopped state, so simulate that
		self.event(iPlayableService.evEnd)

	def event(self, ev):
		# loop up if we need to handle this event
		if self.eventmap.has_key(ev):
			# call handler
			self.eventmap[ev]()
	
	def createWidget(self, parent):
		# by default, we use a label to display our data.
		g = eLabel(parent)
		return g

	def enablePolling(self, interval=60000):
		if interval:
			self.poll_timer.start(interval)
		else:
			self.poll_timer.stop()
	
	def disablePolling(self):
		self.enablePolling(interval=0)

	def poll(self):
		pass

class PerServiceDisplayProgress(GUIComponent, VariableValue, PerServiceDisplay):
	def __init__(self, navcore, eventmap):
		GUIComponent.__init__(self)
		VariableValue.__init__(self)
		self.eventmap = eventmap
		self.navcore = navcore
		self.navcore.event.append(self.event)

		# start with stopped state, so simulate that
		self.event(iPlayableService.evEnd)


	def createWidget(self, parent):
		# by default, we use a label to display our data.
		self.g = eSlider(parent)
		return self.g