fix

[enigma2.git] / lib / python / Components / GUIComponent.py

diff --git a/lib/python/Components/GUIComponent.py b/lib/python/Components/GUIComponent.py
index 401a004da350b9f5bd1fc1988b2cb827d2573850..a3b1b9e198dea2830af46ebb46259344e90b202a 100644 (file)
--- a/lib/python/Components/GUIComponent.py
+++ b/lib/python/Components/GUIComponent.py
@@ -7,8 +7,11 @@ class GUIComponent(object):
        
        def __init__(self):
                self.instance = None
+               self.onVisibilityChange = [ ]
+               self.__visible = 0
                self.visible = 1
                self.skinAttributes = None
+               self.deprecationInfo = None
        
        def execBegin(self):
                pass
@@ -31,10 +34,10 @@ class GUIComponent(object):
                        self.instance.hide()
                
                if self.skinAttributes is None:
-                       print "warning, skin is missing some elements."
-                       return
+                       return False
 
                skin.applyAllAttributes(self.instance, desktop, self.skinAttributes)
+               return True
 
        def move(self, x, y = None):
                # we assume, that x is already an ePoint
@@ -50,14 +53,22 @@ class GUIComponent(object):
                self.instance.setZPosition(z)
 
        def show(self):
+               old = self.__visible
                self.__visible = 1
                if self.instance is not None:
                        self.instance.show()
+               if old != self.__visible:
+                       for fnc in self.onVisibilityChange:
+                               fnc(True)
 
        def hide(self):
+               old = self.__visible
                self.__visible = 0
                if self.instance is not None:
                        self.instance.hide()
+               if old != self.__visible:
+                       for fnc in self.onVisibilityChange:
+                               fnc(False)
 
        def getVisible(self):
                return self.__visible