Do record (pre)validation and saving on selection change for list-form views

Closes #12025

sao/CHANGELOG

@@ -1,3 +1,4 @@
+* Do record (pre)validation and saving on selection change for list-form views
 * Eagerly read string value of selection fields
 * Do not select first record by default
 * Use ``&`` and ``|`` as boolean operator in search widget

sao/src/view/list_form.js

@@ -119,28 +119,46 @@
             }
         },
         _select_row: function(event_) {
-            var current_view_form;
-            var view_form_idx = event_.data;
-            var view_form = this._view_forms[view_form_idx];
+            var next_form_idx = event_.data;
+            var next_view_form = this._view_forms[next_form_idx];
 
-            if (event_.shiftKey) {
-                for (const other_view_form of this._view_forms) {
-                    if (other_view_forms.record === this.record) {
-                        current_view_form = other_view_form;
-                        break;
+            var prm = jQuery.when();
+            if (this.record && (next_view_form.record != this.record)) {
+                if (!this.screen.group.parent) {
+                    if (!this.record.validate(
+                            this.get_fields(), false, false, false)) {
+                        prm = jQuery.Deferred().reject();
+                    } else {
+                        prm = this.record.save();
                     }
+                } else if (this.screen.attributes.pre_validate) {
+                    prm = this.record.pre_validate();
                 }
-                this.select_records(i, view_form_idx);
-            } else {
-                if (!(event_.ctrlKey || event_.metaKey)) {
-                    this.select_records(null, null);
+            }
+
+            prm.done(() => {
+                var current_view_form;
+
+                if (event_.shiftKey) {
+                    for (const other_view_form of this._view_forms) {
+                        if (other_view_forms.record === this.record) {
+                            current_view_form = other_view_form;
+                            break;
+                        }
+                    }
+                    this.select_records(i, next_form_idx);
+                } else {
+                    if (!(event_.ctrlKey || event_.metaKey)) {
+                        this.select_records(null, null);
+                    }
+                    this.record = next_view_form.record;
+                    next_view_form.el.parent()
+                        .toggleClass('list-group-item-selected');
                 }
-                this.record = view_form.record;
-                view_form.el.parent().toggleClass('list-group-item-selected');
-            }
-            if (current_view_form) {
-                this.record = current_view_form.record;
-            }
+                if (current_view_form) {
+                    this.record = current_view_form.record;
+                }
+            });
         }
     });
 

tryton/CHANGELOG

@@ -1,3 +1,4 @@
+* Do record (pre)validation and saving on selection change for list-form views
 * Eagerly read string value of selection fields
 * Do not select first record by default
 * Use ``&`` and ``|`` as boolean operator in search widget

tryton/tryton/gui/window/view_form/view/list_form.py

@@ -1,6 +1,6 @@
 # This file is part of Tryton.  The COPYRIGHT file at the top level of
 # this repository contains the full copyright notices and license terms.
-from gi.repository import Gio, GObject, Gtk
+from gi.repository import Gio, GLib, GObject, Gtk
 
 from tryton.common import common
 
@@ -132,16 +132,51 @@ class ViewListForm(View):
                 break
 
     def _row_selected(self, listbox, row):
-        if not row:
-            return
-        self.record = self._model.get_item(row.get_index()).record
+        previous_record = self.record
+        if (previous_record
+                and previous_record not in previous_record.group):
+            previous_record = None
+
+        if row:
+            self.record = self._model.get_item(row.get_index()).record
+        else:
+            self.record = None
+
+        def go_previous():
+            self.record = previous_record
+            self.set_cursor()
+
+        def save():
+            if not previous_record.destroyed:
+                if not previous_record.save():
+                    go_previous()
+
+        def pre_validate():
+            if not previous_record.destroyed:
+                if not previous_record.pre_validate():
+                    go_previous()
+
+        if previous_record and previous_record != self.record:
+            if not self.screen.parent:
+                if not previous_record.validate(self.get_fields()):
+                    go_previous()
+                    return True
+                GLib.idle_add(save)
+            elif self.screen.pre_validate:
+                GLib.idle_add(pre_validate)
 
     @common.idle_add
     def _select_show_row(self, index):
         # translate_coordinates requires that both widgets are realized
         if not self.listbox.get_realized():
             return
-        self.listbox.unselect_all()
+        # unselect_all triggers a loop in _row_selected if the record is not
+        # valid
+        self.listbox.handler_block_by_func(self._select_show_row)
+        try:
+            self.listbox.unselect_all()
+        finally:
+            self.listbox.handler_unblock_by_func(self._select_show_row)
         row = self.listbox.get_row_at_index(index)
         if not row or not row.get_realized():
             return