Set toolbar button sensitiveness based on record id instead of position

sao/src/tab.js

@@ -1543,6 +1543,9 @@
             const view_type = this.screen.current_view.view_type;
             var next_view_type = this.screen.next_view_type;
             const has_views = this.screen.number_of_views > 1;
+            let sensitive = (
+                record_id >= 0 ? record_id !== null && record_id !== undefined :
+                false);
             var buttons = ['print', 'relate', 'email', 'attach', 'chat'];
             for (const button_id of buttons) {
                 const button = this.buttons[button_id];
@@ -1562,10 +1565,10 @@
                             return keyword == button_id;
                         });
                 }
-                set_sensitive(button_id, position && can_be_sensitive);
+                set_sensitive(button_id, sensitive && can_be_sensitive);
             }
             for (let button_id of ['reload', 'action']) {
-                set_sensitive(button_id, record_id !== null);
+                set_sensitive(button_id, sensitive);
             }
             set_sensitive(
                 'switch_',

tryton/tryton/gui/window/form.py

@@ -614,6 +614,7 @@ class Form(TabContent):
         has_views = self.screen.number_of_views > 1
         if selected > 1:
             name += '#%i' % selected
+        sensitive = record_id >= 0 if record_id is not None else False
         for button_id in [
                 'print', 'relate', 'email', 'open', 'attach', 'chat']:
             button = self.buttons.get(button_id)
@@ -627,9 +628,9 @@ class Form(TabContent):
                 can_be_sensitive |= any(
                     b.attrs.get('keyword', 'action') == action_type
                     for b in self.screen.get_buttons())
-            set_sensitive(button_id, bool(position) and can_be_sensitive)
+            set_sensitive(button_id, sensitive and can_be_sensitive)
         for button_id in ['reload', 'action']:
-            set_sensitive(button_id, record_id is not None)
+            set_sensitive(button_id, sensitive)
         set_sensitive(
             'switch',
             (position or view_type == 'form' or next_view_type != 'form')