Fix/combobox enter (issue#41)

mininterface/_tk_interface/secret_entry.py

@@ -25,6 +25,7 @@ def _on_toggle(self, event=None):
         """Handle toggle key event"""
         self.toggle_show()
         return "break"  # Prevent event propagation
+
 
     def toggle_show(self):
         if self.tag.toggle_visibility():

mininterface/_tk_interface/select_input.py

@@ -193,7 +193,8 @@ def combobox(self):
         widget = AutoCombobox(self.frame, textvariable=self.variable)
         widget["values"] = [k for k, *_ in options]
         widget.pack()
-        widget.bind("<Return>", lambda _: "break")  # override default enter that submits the form
+        #widget.bind("<Return>", lambda _: "break")  # override default enter that submits the form
+        widget.bind("<Return>", lambda _: self._enter_handler())
 
         self.set_default_label()
         self.taking_focus = widget
@@ -212,3 +213,13 @@ def select_on_focus(self, var, val):
             # We never want to select the radiobutton in the initial phase
             # as this might trigger on_change action (not caused by the user)
             var.set(val)
+
+    def _enter_handler(self, event=None):
+        current_value = self.variable.get()
+
+        if not current_value:
+            return "break"  # Let it perform the default behavior and open the dropdown
+
+        # If it has a value, submit it
+        self.adaptor._ok()
+        return "break"