from Screens.Screen import Screen
from Components.ActionMap import NumberActionMap
from Components.Label import Label
from Components.ChoiceList import ChoiceEntryComponent, ChoiceList
from Components.Sources.StaticText import StaticText

class ChoiceBox(Screen):
	ALLOW_SUSPEND = Screen.SUSPEND_STOPS
	IS_DIALOG = True

	def __init__(self, session, title = "", list = [], keys = None, selection = 0, skin_name = [], windowTitle = None, allow_cancel = True, titlebartext = _("Input")):
		if not windowTitle: #for compatibility
			windowTitle = titlebartext
		Screen.__init__(self, session, windowTitle=windowTitle)

		self.allow_cancel = allow_cancel

		if isinstance(skin_name, str):
			skin_name = [skin_name]
		self.skinName = skin_name + ["ChoiceBox"] 

		self["text"] = Label(title)
		self.list = []
		self.summarylist = []
		if keys is None:
			self.__keys = [ "1", "2", "3", "4", "5", "6", "7", "8", "9", "0", "red", "green", "yellow", "blue", "text" ] + (len(list) - 10) * [""]
		else:
			self.__keys = keys + (len(list) - len(keys)) * [""]
			
		self.keymap = {}
		pos = 0
		for x in list:
			strpos = str(self.__keys[pos])
			self.list.append(ChoiceEntryComponent(key = strpos, text = x))
			if self.__keys[pos] != "":
				self.keymap[self.__keys[pos]] = list[pos]
			self.summarylist.append((self.__keys[pos],x[0]))
			pos += 1
		self["list"] = ChoiceList(list = self.list, selection = selection)
		self["summary_list"] = StaticText()
		self.updateSummary()
				
		self["actions"] = NumberActionMap(["WizardActions", "InputActions", "ColorActions", "DirectionActions"], 
		{
			"ok": self.go,
			"back": self.cancel,
			"1": self.keyNumberGlobal,
			"2": self.keyNumberGlobal,
			"3": self.keyNumberGlobal,
			"4": self.keyNumberGlobal,
			"5": self.keyNumberGlobal,
			"6": self.keyNumberGlobal,
			"7": self.keyNumberGlobal,
			"8": self.keyNumberGlobal,
			"9": self.keyNumberGlobal,
			"0": self.keyNumberGlobal,
			"red": self.keyRed,
			"green": self.keyGreen,
			"yellow": self.keyYellow,
			"blue": self.keyBlue,
			"text": self.keyText,
			"up": self.up,
			"down": self.down
		}, -1)

	def keyLeft(self):
		pass
	
	def keyRight(self):
		pass
	
	def up(self):
		if len(self["list"].list) > 0:
			while True:
				self["list"].instance.moveSelection(self["list"].instance.moveUp)
				self.updateSummary(self["list"].l.getCurrentSelectionIndex())
				if self["list"].l.getCurrentSelection()[0][0] != "--" or self["list"].l.getCurrentSelectionIndex() == 0:
					break

	def down(self):
		if len(self["list"].list) > 0:
			while True:
				self["list"].instance.moveSelection(self["list"].instance.moveDown)
				self.updateSummary(self["list"].l.getCurrentSelectionIndex())
				if self["list"].l.getCurrentSelection()[0][0] != "--" or self["list"].l.getCurrentSelectionIndex() == len(self["list"].list) - 1:
					break

	# runs a number shortcut
	def keyNumberGlobal(self, number):
		self.goKey(str(number))

	# runs the current selected entry
	def go(self):
		cursel = self["list"].l.getCurrentSelection()
		if cursel:
			self.goEntry(cursel[0])
		else:
			self.cancel()

	# runs a specific entry
	def goEntry(self, entry):
		if len(entry) > 2 and isinstance(entry[1], str) and entry[1] == "CALLFUNC":
			# CALLFUNC wants to have the current selection as argument
			arg = self["list"].l.getCurrentSelection()[0]
			entry[2](arg)
		else:
			self.close(entry)

	# lookups a key in the keymap, then runs it
	def goKey(self, key):
		if key in self.keymap:
			entry = self.keymap[key]
			self.goEntry(entry)

	# runs a color shortcut
	def keyRed(self):
		self.goKey("red")

	def keyGreen(self):
		self.goKey("green")

	def keyYellow(self):
		self.goKey("yellow")

	def keyBlue(self):
		self.goKey("blue")

	def keyText(self):
		self.goKey("text")

	def updateSummary(self, curpos=0):
		pos = 0
		summarytext = ""
		for entry in self.summarylist:
			if pos > curpos-2 and pos < curpos+5:
				if pos == curpos:
					summarytext += ">"
				elif isinstance(entry[0], str):
					summarytext += entry[0]
				summarytext += ' ' + entry[1] + '\n'
			pos += 1
		self["summary_list"].setText(summarytext)

	def cancel(self):
		if self.allow_cancel:
			self.close(None)
