Base learner widget: Fix apply after rename

Author: janezd

Orange/widgets/utils/owlearnerwidget.py

@@ -176,19 +176,29 @@ def set_data(self, data):
         # invalidate the model so that handleNewSignals will update it
         self.model = None
 
-    def apply(self, *, hard=True):
+    SEND, SOFT, UPDATE = range(3)
+
+    def apply(self, *, level=UPDATE):
         """Applies learner and sends new model."""
-        if hard or self.learner is None:
-            self.update_learner()
-        if hard or self.model is None:
+        if level == self.SEND:
+            self._send_learner()
+            self._send_model()
+        elif level == self.UPDATE:
+            self.update_learnel()
             self.update_model()
+        else:
+            self.learner or self.update_learner()
+            self.model or self.update_model()
 
     def update_learner(self):
         self.learner = self.create_learner()
         if self.learner and issubclass(self.LEARNER, Fitter):
             self.learner.use_default_preprocessors = True
         if self.learner is not None:
             self.learner.name = self.effective_learner_name()
+        self._send_learner()
+
+    def _send_learner(self):
         self.Outputs.learner.send(self.learner)
         self.outdated_settings = False
         self.Warning.outdated_learner.clear()
@@ -216,6 +226,9 @@ def update_model(self):
             else:
                 self.model.name = self.learner_name or self.captionTitle
                 self.model.instances = self.data
+        self._send_model()
+
+    def _send_model(self):
         self.Outputs.model.send(self.model)
 
     def check_data(self):
@@ -245,7 +258,7 @@ def settings_changed(self, *args, **kwargs):
     def _change_name(self, instance, output):
         if instance:
             instance.name = self.effective_learner_name()
-            self.apply()
+            self.apply(level=self.SEND)
 
     def learner_name_changed(self):
         self._change_name(self.learner, self.Outputs.learner)