X-Git-Url: https://git.cweiske.de/enigma2.git/blobdiff_plain/e1ea45e881637c29c87677ef0cb15fcc600cf502..d26a119a33db3ad39b4930712cef2b15cbaf0f8c:/lib/python/Screens/Screen.py

diff --git a/lib/python/Screens/Screen.py b/lib/python/Screens/Screen.py
index 3c635831..8398dadd 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.
@@ -25,15 +29,15 @@ class Screen(dict, HTMLSkin, GUISkin):
 		self.active_components = [ ]
 		for x in self.onExecBegin:
 			x()
-			if self.session.currentDialog != self:
+			if self.session.current_dialog != self:
 				return
 
-#		assert self.session == None, "a screen can only exec one per time"
+#		assert self.session == None, "a screen can only exec once per time"
 #		self.session = session
 
 		for (name, val) in self.items():
 			val.execBegin()
-			if self.session.currentDialog != self:
+			if self.session.current_dialog != self:
 				return
 			self.active_components.append(val)
 
@@ -53,6 +57,7 @@ class Screen(dict, HTMLSkin, GUISkin):
 	
 	# never call this directly - it will be called from the session!
 	def doClose(self):
+		self.hide()
 		for x in self.onClose:
 			x()
 		
@@ -72,3 +77,25 @@ class Screen(dict, HTMLSkin, GUISkin):
 
 	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()
+		for (name, val) in self.items():
+			if isinstance(val, GUIComponent):
+				val.onShow()
+
+	def hide(self):
+		if not self.shown:
+			return
+		self.shown = False
+		self.instance.hide()
+		for x in self.onHide:
+			x()
+		for (name, val) in self.items():
+			if isinstance(val, GUIComponent):
+				val.onHide()