factorize the conditionalPixmap

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

diff --git a/lib/python/Components/ConditionalWidget.py b/lib/python/Components/ConditionalWidget.py
new file mode 100644 (file)
index 0000000..5ff7798
--- /dev/null
+++ b/lib/python/Components/ConditionalWidget.py
@@ -0,0 +1,67 @@
+import skin
+from GUIComponent import *
+
+from enigma import *
+
+class Widget(GUIComponent):
+       
+       SHOWN = 0
+       HIDDEN = 1
+       
+       def __init__(self):
+               GUIComponent.__init__(self)
+               self.instance = None
+               self.state = self.SHOWN
+       
+       def GUIcreate(self, parent):
+               self.instance = self.createWidget(parent)
+       
+       def GUIdelete(self):
+               self.removeWidget(self.instance)
+               self.instance = None
+       
+       def removeWidget(self, w):
+               pass
+       
+       def showWidget(self):
+               self.state = self.SHOWN
+               self.instance.show()
+
+       def hideWidget(self):
+               self.state = self.HIDDEN
+               self.instance.hide()
+       
+       def removeWidget(self, instance):
+               pass
+
+class ConditionalWidget(Widget):
+       def __init__(self, withTimer = True):
+               Widget.__init__(self)
+               
+               self.setConnect(None)
+               
+               if (withTimer):
+                       self.conditionCheckTimer = eTimer()
+                       self.conditionCheckTimer.timeout.get().append(self.update)
+                       self.conditionCheckTimer.start(1000)
+               
+       def setConnect(self, conditionalFunction):
+               self.conditionalFunction = conditionalFunction
+               
+       def activateCondition(self, condition):
+               if (condition):
+                       if (self.state == self.HIDDEN):
+                               self.showWidget()
+               else:
+                       if (self.state == self.SHOWN):
+                               self.hideWidget()
+
+       def update(self):
+               if (self.conditionalFunction != None):
+                       try:
+                               self.conditionalFunction() # check, if the conditionalfunction is still valid
+                       except:
+                               self.conditionalFunction = None
+                               self.activateCondition(False)
+                       
+                       self.activateCondition(self.conditionalFunction())