[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, 21 insertions, 0 deletions

diff --git a/addons/mail/static/src/component_hooks/use_refs/use_refs.js b/addons/mail/static/src/component_hooks/use_refs/use_refs.js
new file mode 100644
index 00000000000..6c84f195222
--- /dev/null
+++ b/addons/mail/static/src/component_hooks/use_refs/use_refs.js
@@ -0,0 +1,21 @@
+odoo.define('mail/static/src/component_hooks/use_refs/use_refs.js', function (require) {
+'use strict';
+
+const { Component } = owl;
+
+/**
+ * This hook provides support for dynamic-refs.
+ *
+ * @returns {function} returns object whose keys are t-ref values of active refs.
+ *   and values are refs.
+ */
+function useRefs() {
+    const component = Component.current;
+    return function () {
+        return component.__owl__.refs || {};
+    };
+}
+
+return useRefs;
+
+});