[ADD] show reply button for messages which haven't record_name

[IMP] in reply form in subject field set message.subject value which haven't message.record_name attribute

mail_reply/__init__.py

@@ -0,0 +1 @@
+# -*- coding: utf-8 -*-

mail_reply/__openerp__.py

@@ -12,9 +12,16 @@
     #"price": 9.00,
     #"currency": "EUR",
 
-    "depends": [],
+    "depends": [
+        "mail_base",
+    ],
     "external_dependencies": {"python": [], "bin": []},
-    "data": [],
+    "data": [
+        'templates.xml'
+    ],
+    "qweb": [
+        "static/src/xml/reply_button.xml",
+    ],
     "demo": [],
     "installable": True,
     "auto_install": False,

mail_reply/static/src/js/mail_reply.js

@@ -0,0 +1,22 @@
+odoo.define('mail_reply.reply', function (require) {
+"use strict";
+
+var core = require('web.core');
+var base_obj = require('mail_base.base');
+
+var ChatAction = core.action_registry.get('mail.chat.instant_messaging');
+ChatAction.include({
+    select_message: function(message_id) {
+        this._super.apply(this, arguments);
+        var message = base_obj.chat_manager.get_message(message_id);
+        var subject = '';
+        if (message.record_name){
+            subject = "Re: " + message.record_name;
+        } else if (message.subject){
+            subject = "Re: " + message.subject;
+        }
+        this.extended_composer.set_subject(subject);
+    }
+});
+
+});

mail_reply/static/src/xml/reply_button.xml

@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<template>
+    <t t-extend="mail.ChatThread.Message">
+        <t t-jquery='i[class="fa fa-reply o_thread_message_reply"]' t-operation="replace">
+            <i t-if="message.model != 'mail.channel' &amp;&amp; options.display_reply_icon"
+                class="fa fa-reply o_thread_message_reply"
+                t-att-data-message-id="message.id" title="Reply"/>
+        </t>
+    </t>
+</template>

mail_reply/templates.xml

@@ -0,0 +1,12 @@
+<?xml version="1.0"?>
+<openerp>
+    <data>
+        <template id="mail_reply_assets_backend"
+                  name="mail_reply_assets_backend"
+                  inherit_id="web.assets_backend">
+            <xpath expr="." position="inside">
+                <script src="/mail_reply/static/src/js/mail_reply.js" type="text/javascript"></script>
+            </xpath>
+        </template>
+    </data>
+</openerp>