fix RepeatedController

a snap update was offered the second time even if it had been
offered already

subiquitycore/controller.py

@@ -69,7 +69,10 @@ class BaseController(ABC):
 
     @property
     def showing(self):
-        return self.app.controllers.cur is self
+        inst = self.app.controllers.cur
+        while isinstance(inst, RepeatedController):
+            inst = inst.orig
+        return inst is self
 
     @abstractmethod
     def start_ui(self):

subiquitycore/core.py

@@ -298,7 +298,7 @@ class ControllerSet:
             log.debug("Importing controller: %s", name)
             klass = getattr(controllers_mod, name+"Controller")
             if hasattr(self, name):
-                c = 0
+                c = 1
                 for instance in self.instances:
                     if isinstance(instance, klass):
                         c += 1
@@ -313,10 +313,7 @@ class ControllerSet:
     def cur(self):
         if self.out_of_bounds():
             return None
-        inst = self.instances[self.index]
-        while isinstance(inst, RepeatedController):
-            inst = inst.orig
-        return inst
+        return self.instances[self.index]
 
     def out_of_bounds(self):
         return self.index < 0 or self.index >= len(self.instances)