show, hide is now supported in screen, adding onShow (!= onShown), onHide

[enigma2.git] / lib / python / Screens / Screen.py

diff --git a/lib/python/Screens/Screen.py b/lib/python/Screens/Screen.py
index 3c6358313a53050707b429133aba6a0e4c6cc460..a8d0b0481f9efedad6432b1852f2da15a6e925a3 100644 (file)
--- 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.onExecBegin = [ ]
                self.onShown = [ ]
                

+               self.onShow = [ ]
+               self.onHide = [ ]
+               

                self.execing = False
                self.execing = False

+               self.shown = False

                
                # in order to support screens *without* a help,
                # we need the list in every screen. how ironic.
                
                # in order to support screens *without* a help,
                # we need the list in every screen. how ironic.


@@ -72,3 +76,19 @@ class Screen(dict, HTMLSkin, GUISkin):
 
        def setFocus(self, o):
                self.instance.setFocus(o.instance)
 
        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()