- use Valuechanged mechanism

components/aplant.py

@@ -1,10 +1,8 @@
 import abc
+from utils.value import AttributeChange
 
 
-class APlant:
-	def __init__(self, params):
-		pass
-
+class APlant(AttributeChange):
 	@abc.abstractmethod
 	def activate(self, enable):
 		return None
@@ -14,7 +12,7 @@ class APlant:
 		pass
 
 	@abc.abstractmethod
-	def setPower(self, power_W):
+	def setPower(self, power):
 		pass
 
 	@abc.abstractmethod
@@ -24,7 +22,3 @@ class APlant:
 	@abc.abstractmethod
 	def getTemperature(self):
 		return None
-
-	@abc.abstractmethod
-	def connect_theta_changed(self, func):
-		pass