Ensure to put search_value in URL

If the screen container or the domain parser are not yet ready to compute the
search_value, we should ensure to use the initial search_value. Otherwise sao
may trigger to open a new tab without the search_value because the URL will be
set with an empty search.

issue8267
review281471002

tryton/gui/window/view_form/screen/screen.py

@@ -312,6 +312,7 @@ class Screen(SignalEvent):
                 domain = self.domain_parser.parse(search_string)
             else:
                 domain = self.search_value
+                self.search_value = None
             if set_text:
                 self.screen_container.set_text(
                     self.domain_parser.string(domain))
@@ -1215,8 +1216,11 @@ class Screen(SignalEvent):
         path = [CONFIG['login.db'], 'model', self.model_name]
         view_ids = [v.view_id for v in self.views] + self.view_ids
         if self.current_view.view_type != 'form':
-            search_string = self.screen_container.get_text()
-            search_value = self.domain_parser.parse(search_string)
+            if self.search_value:
+                search_value = self.search_value
+            else:
+                search_string = self.screen_container.get_text()
+                search_value = self.domain_parser.parse(search_string)
             if search_value:
                 query_string.append(('search_value', json.dumps(
                             search_value, cls=JSONEncoder,