Test/improve undo feature

asn1_value_editor/gui.py

@@ -354,7 +354,9 @@ def gui():
                               {'dll': Signal(unicode, type, type)})
             encoder_backend.send_via_dll = DLLHandler()
             encoder_backend.send_via_dll.dll.connect(sdl.send_tc)
-            editor.msc.connect(sdl.add_to_msc)
+            if isinstance(editor, asn1Viewer):
+                # Connect TM to MSC
+                editor.msc.connect(sdl.add_to_msc)
         else:
             editor.msc.connect(msc.addToMsc)
 

asn1_value_editor/sdlHandler.py

@@ -324,14 +324,14 @@ class sdlHandler(QObject):
     def send_tc(self, name, tc_func_ptr, param=None):
         ''' Send a TC - Used either locally (parameterless TCs) or via
         a signal sent by the B-mapper-generated backends '''
-        if name in self.timers:
-#            self.buttons[name].setEnabled(False)
-            self.add_to_msc('timeout', name)
-        elif not param:
-            msg = '{tc}{arg}'.format(tc=name,
-                              arg='({})'.format(param.GSER()) if param else '')
-            self.add_to_msc('out', msg)
         with undo.UndoMacro(self.undo_stack, 'Send TC'):
+            if name in self.timers:
+                self.add_to_msc('timeout', name)
+            else:
+                msg = '{tc}{arg}'.format(tc=name,
+                                         arg='({})'.format(param.GSER())
+                                             if param else '')
+                self.add_to_msc('out', msg)
             undo_cmd = SendTC(self, tc_func_ptr, param)
             self.undo_stack.push(undo_cmd)
             self.check_state()