Splitting reset into pre and post reset.

src/model/model.py

@@ -21,13 +21,26 @@ class Model:
         self.translation = None
         self.sense = None
         
+        # choosing examples
+        self.chosen_examples = []
+        
         self.reset()
         self.modal_reset()
     
     def reset(self):
+        # do both resets at once
+        self.pre_reset()
+        self.post_reset()
+        
+    def pre_reset(self):
+        # the reset before updating models
         self.menu_target = None
         self.modal_shown = False
     
+    def post_reset(self):
+        # the reset after updating the models
+        self.chosen_examples = []
+    
     def modal_reset(self):
         self.modal = lambda: []
         

src/update.py

@@ -7,19 +7,29 @@ class Update:
         self.view = None
 
     def update_model(self):
-        # any update resets menu_location, except if it explicitly defines it
+        # check if we need to reset the model
+        reset = False
         for msg in self.message_queue:
             if msg.reset():
-                self.model.reset()
+                reset = True
                 break
         
+        if reset:
+            self.model.pre_reset()
+            
+        # check if we need to signal the data change
         for msg in self.message_queue:
             if msg.data_change():
                 screenful.changed()
+                break
             
+        # do update
         for msg in self.message_queue:
             msg.update_model(self.model)
             
+        if reset:
+            self.model.post_reset()
+
         self.message_queue = []
         self.view.view(self.model)