Stop the edition of Selection fields in editable Treeviews on focus-out

Closes #12308
(grafted from 9c81c15ec5164ed8e1e3bda05dc932c1430f65d7)

--HG--
branch : 6.0

tryton/tryton/common/__init__.py

@@ -9,7 +9,8 @@ from .common import (
     RPCProgress, RPCExecute, RPCContextReload, Tooltips, COLOR_SCHEMES,
     filter_domain, timezoned_date, untimezoned_date, humanize, get_hostname,
     get_port, resize_pixbuf, data2pixbuf, apply_label_attributes, ellipsize,
-    get_align, date_format, idle_add, check_version, TRYTON_ICON, setup_window)
+    get_align, date_format, idle_add, check_version, TRYTON_ICON, setup_window,
+    get_gdk_backend)
 from .domain_inversion import (
     domain_inversion, eval_domain, localize_domain, merge, inverse_leaf,
     filter_leaf, prepare_reference_domain, extract_reference_models, concat,
@@ -30,4 +31,4 @@ __all__ = [
     localize_domain, merge, inverse_leaf, filter_leaf,
     prepare_reference_domain, extract_reference_models, concat, simplify,
     unique_value, EvalEnvironment, timedelta, check_version, TRYTON_ICON,
-    setup_window]
+    setup_window, get_gdk_backend]

tryton/tryton/common/common.py

@@ -1339,3 +1339,17 @@ def idle_add(func):
 def setup_window(window):
     if sys.platform == 'darwin':
         window.set_mnemonic_modifier(Gdk.ModifierType.CONTROL_MASK)
+
+
+def get_gdk_backend():
+    if sys.platform == 'darwin':
+        return 'macos'
+    elif sys.platform == 'win32':
+        return 'win32'
+    else:
+        dm = Gdk.DisplayManager.get()
+        default = dm.props.default_display
+        dm_class_name = default.__class__.__name__.lower()
+        if 'wayland' in dm_class_name:
+            return 'wayland'
+        return 'x11'

tryton/tryton/gui/window/view_form/view/list_gtk/widget.py

@@ -14,6 +14,7 @@ from tryton.gui.window.win_form import WinForm
 from tryton.gui.window.view_form.screen import Screen
 from tryton.common import file_selection, file_open, file_write
 import tryton.common as common
+from tryton.common import get_gdk_backend
 from tryton.common.cellrendererbutton import CellRendererButton
 from tryton.common.cellrenderertext import CellRendererText, \
     CellRendererTextCompletion
@@ -1076,10 +1077,12 @@ class Selection(GenericText, SelectionMixin, PopdownMixin):
     def editing_started(self, cell, editable, path):
         super(Selection, self).editing_started(cell, editable, path)
         record, field = self._get_record_field_from_path(path)
-        # Combobox does not emit remove-widget when focus is changed
-        self.editable.connect(
-            'editing-done',
-            lambda *a: self.editable.emit('remove-widget'))
+        gdk_backend = get_gdk_backend()
+        if gdk_backend == 'x11':
+            # Combobox does not emit remove-widget when focus is changed
+            self.editable.connect(
+                'editing-done',
+                lambda *a: self.editable.emit('remove-widget'))
 
         selection_shortcuts(editable)
 
@@ -1087,6 +1090,14 @@ class Selection(GenericText, SelectionMixin, PopdownMixin):
             return self.set_value(editable, record, field)
         editable.get_child().connect('activate', set_value)
         editable.get_child().connect('focus-out-event', set_value)
+
+        if gdk_backend != 'x11':
+            # For non X11 backend we can rely the focus-out-event to be sent
+            # correctly
+            def remove_entry(entry, event):
+                editable.emit('editing-done')
+                editable.emit('remove-widget')
+            editable.get_child().connect('focus-out-event', remove_entry)
         editable.connect('changed', set_value)
 
         self.update_selection(record, field)