Add option to disable thread in tryton

As shown in #11767 on some platform the Python threading does not work well
with Gtk. So it is good to have the option to disable it at the cost of less
performance.

tryton/CHANGELOG

@@ -1,3 +1,4 @@
+* Add option to disable thread
 * Remove support for Python 3.7
 * Add support for Python 3.11
 * Save and Restore tree state on List Form

tryton/tryton/bus.py

@@ -25,6 +25,8 @@ CHANNELS = [
 
 
 def listen(connection):
+    if not CONFIG['thread']:
+        return
     listener = threading.Thread(
         target=_listen, args=(connection,), daemon=True)
     listener.start()

tryton/tryton/config.py

@@ -97,6 +97,9 @@ class ConfigManager(object):
                 help=_("specify the login user"))
         parser.add_option("-s", "--server", dest="host",
                 help=_("specify the server hostname:port"))
+        parser.add_option(
+            '--no-thread', default=True, action='store_false', dest='thread',
+            help=_("disable thread usage"))
         opt, self.arguments = parser.parse_args()
         self.rcfile = opt.config or os.path.join(
             get_config_dir(), 'tryton.conf')
@@ -125,6 +128,7 @@ class ConfigManager(object):
         for arg in ['login', 'host']:
             if getattr(opt, arg):
                 self.options['login.' + arg] = getattr(opt, arg)
+        self.options['thread'] = opt.thread
 
     def save(self):
         try:

tryton/tryton/gui/main.py

@@ -522,19 +522,25 @@ class Main(Gtk.Application):
         except RPCException:
             prefs = {}
 
-        threads = []
-        for target in (
-                common.IconFactory.load_icons,
-                common.MODELACCESS.load_models,
-                common.MODELHISTORY.load_history,
-                common.MODELNOTIFICATION.load_names,
-                common.VIEW_SEARCH.load_searches,
-                ):
-            t = threading.Thread(target=target)
-            threads.append(t)
-            t.start()
-        for t in threads:
-            t.join()
+        targets = [
+            common.IconFactory.load_icons,
+            common.MODELACCESS.load_models,
+            common.MODELHISTORY.load_history,
+            common.MODELNOTIFICATION.load_names,
+            common.VIEW_SEARCH.load_searches,
+            ]
+        if CONFIG['thread']:
+            threads = []
+            for target in targets:
+                t = threading.Thread(target=target)
+                threads.append(t)
+                t.start()
+            for t in threads:
+                t.join()
+        else:
+            for target in targets:
+                target()
+
         if prefs and 'language_direction' in prefs:
             translate.set_language_direction(prefs['language_direction'])
             CONFIG['client.language_direction'] = \

tryton/tryton/gui/window/dblogin.py

@@ -286,9 +286,13 @@ class DBListEditor(object):
 
     def refresh_databases(self, host, port):
         self.dbs_updated = threading.Event()
-        threading.Thread(target=self.refresh_databases_start,
-            args=(host, port)).start()
-        GLib.timeout_add(100, self.refresh_databases_end, host, port)
+        if CONFIG['thread']:
+            threading.Thread(target=self.refresh_databases_start,
+                args=(host, port)).start()
+            GLib.timeout_add(100, self.refresh_databases_end, host, port)
+        else:
+            self.refresh_databases_start(host, port)
+            self.refresh_databases_end(host, port)
 
     def refresh_databases_start(self, host, port):
         dbs = None