from enigma import loadPNG
from Components.config import ConfigSubsection, config

config.plugins = ConfigSubsection()

class PluginDescriptor:
	"""An object to describe a plugin."""
	
	# where to list the plugin. Note that there are different call arguments,
	# so you might not be able to combine them.
	
	# supported arguments are:
	#   session
	#   servicereference
	#   reason
	
	# you have to ignore unknown kwargs!
	
	# argument: session
	WHERE_EXTENSIONSMENU = 0
	WHERE_MAINMENU = 1
	WHERE_PLUGINMENU  = 2
	# argument: session, serviceref (currently selected)
	WHERE_MOVIELIST = 3
	# argument: menuid. Fnc must return list with menuitems (4-tuple of name, fnc to call, entryid or None, weight or None)
	WHERE_MENU = 4
	
	# reason (0: start, 1: end)
	WHERE_AUTOSTART = 5
	
	# start as wizard. In that case, fnc must be a screen class!
	WHERE_WIZARD = 6
	
	# like autostart, but for a session. currently, only session starts are 
	# delivered, and only on pre-loaded plugins
	WHERE_SESSIONSTART = 7
	
	# start as teletext plugin. arguments: session, serviceref
	WHERE_TELETEXT = 8
	
	# file-scanner, fnc must return a list of Scanners
	WHERE_FILESCAN = 9
	
	# fnc must take an interface name as parameter and return None if the plugin supports an extended setup
	# or return a function which is called with session and the interface name for extended setup of this interface
	WHERE_NETWORKSETUP = 10
	
	def __init__(self, name = "Plugin", where = [ ], description = "", icon = None, fnc = None):
		self.name = name
		if type(where) is list:
			self.where = where
		else:
			self.where = [ where ]
		self.description = description

		if type(icon) is str or icon is None:
			self.iconstr = icon
			self.icon = None
		else:
			self.icon = icon

		self.__call__ = fnc

	def updateIcon(self, path):
		if type(self.iconstr) is str:
			self.icon = loadPNG(path + "/" + self.iconstr)
		else:
			self.icon = None

	def __eq__(self, other):
		return self.__call__ == other.__call__