[REF] mail, *: refactor messaging with OWL

This commit is a significant rewriting of client-side discuss, chatter,
chat window, and messaging menu using OWL. The behavior should be broadly
the same, with some slight functional changes here and there.

From a technical standpoint, the code of messaging is mainly organized in 2
main groups of modules:

- models, which are logical entities that depict the client-side state of
  messaging as a whole.
- components, which are in charge of displaying information from models.

This refactoring also introduces new JS guidelines regarding folder structure
(/static) and naming rules for JS modules.

Community PR: https://github.com/odoo/odoo/pull/39023
Enterprise PR: https://github.com/odoo/enterprise/pull/6249

Task-1914207

This PR is a collaborative work by Alexandre, Julien, Sébastien and Xavier,
with the precious help of Lucas to speed it up towards the end.

closes odoo/odoo#39023

Related: odoo/enterprise#6249
Signed-off-by: Alexandre Kühn (aku) <aku@odoo.com>
Co-authored-by: Alexandre Kühn <aku@odoo.com>
Co-authored-by: Julien Giannone <jgi@odoo.com>
Co-authored-by: Lucas Perais <lpe@odoo.com>
Co-authored-by: Sébastien Theys <seb@odoo.com>
Co-authored-by: Xavier Dubuc <xdu@odoo.com>

1 files changed, 5 insertions, 2 deletions

diff --git a/addons/web/static/src/js/owl_compatibility.js b/addons/web/static/src/js/owl_compatibility.js
index fe76a309085..103c62dd3ba 100644
--- a/addons/web/static/src/js/owl_compatibility.js
+++ b/addons/web/static/src/js/owl_compatibility.js
@@ -392,8 +392,11 @@ odoo.define('web.OwlCompatibility', function () {
          */
         destroy() {
             if (this.parentWidget) {
-                const index = children.get(this.parentWidget).indexOf(this);
-                children.get(this.parentWidget).splice(index, 1);
+                const parentChildren = children.get(this.parentWidget);
+                if (parentChildren) {
+                    const index = parentChildren.indexOf(this);
+                    children.get(this.parentWidget).splice(index, 1);
+                }
             }
             super.destroy();
         }