X-Git-Url: https://git.cweiske.de/enigma2.git/blobdiff_plain/23cae74818b4ad1b6ed998f0e5d66c1b05302ef8..77a115baa70d23d342a1b54aa5cedd57bc5d6282:/lib/python/Screens/Screen.py

diff --git a/lib/python/Screens/Screen.py b/lib/python/Screens/Screen.py
index 08e0baa9..a8d0b048 100644
--- a/lib/python/Screens/Screen.py
+++ b/lib/python/Screens/Screen.py
@@ -15,7 +15,11 @@ class Screen(dict, HTMLSkin, GUISkin):
 		self.onExecBegin = [ ]
 		self.onShown = [ ]
 		
+		self.onShow = [ ]
+		self.onHide = [ ]
+		
 		self.execing = False
+		self.shown = False
 		
 		# in order to support screens *without* a help,
 		# we need the list in every screen. how ironic.
@@ -63,9 +67,28 @@ class Screen(dict, HTMLSkin, GUISkin):
 		del self.session
 		for (name, val) in self.items():
 			del self[name]
+		
+		# really delete all elements now
+		self.__dict__.clear()
 	
 	def close(self, *retval):
 		self.session.close(*retval)
 
 	def setFocus(self, o):
 		self.instance.setFocus(o.instance)
+
+	def show(self):
+		if self.shown:
+			return
+		self.shown = True
+		self.instance.show()
+		for x in self.onShow:
+			x()
+
+	def hide(self):
+		if not self.shown:
+			return
+		self.shown = False
+		self.instance.hide()
+		for x in self.onHide:
+			x()