odoo/addons/mail/static/src/xml/mail.xml

<?xml version="1.0" encoding="UTF-8"?>
<template>
    
    <div t-name="ThreadView" class="oe_mail_main">
        <div class="separator horizontal">OpenSocial</div>
        <div class="oe_mail_actions">
            <button type="button" class="oe_mail_action_follow">Follow</button>
            <button type="button" class="oe_mail_action_unfollow">Unfollow</button>
        </div>
        <div class="oe_mail_post_comment">
            <textarea rows="3" cols="15">Type your comment</textarea><br />
            <button type="button" class="oe_mail_action_comment">Post comment</button>
        </div>
        <div class="oe_mail_comments">
        </div>
    </div>
    
    <t t-name="ThreadMsgView">
        <div class="oe_mail_msg_image">Image</div>
        <div class="oe_mail_msg_content">
            <p class="oe_mail_msg_p">
                <t t-if="record.type == 'notification'">
                    <span class="oe_mail_msg_author">OpenERP System Notification</span>
                </t>
                <t t-if="record.type == 'comment'">
                    <span class="oe_mail_msg_author"><t t-raw="record.user_id[1]"/></span>
                </t>
                <t t-if="record.type == 'email'">
                    <span class="oe_mail_msg_author"><t t-raw="record.user_id[1]"/></span>
                </t>
                <t t-if="record.need_action_user_id != false">- <span class="oe_mail_msg_need_action">Need action</span></t>
                <br />
                <span class="oe_mail_msg_body"><t t-raw="record.body_text"/></span><br />
                <span class="oe_mail_msg_date"><t t-raw="record.date"/></span>
           </p>
        </div>
    </t>

    <div t-name="WallView" class="oe_mail_wall">
        <div class="oe_mail_post_comment">
            <textarea rows="3" cols="15">Type your comment</textarea><br />
            <button type="button" class="oe_mail_action_comment">Post comment</button>
        </div>
        <div class="oe_mail_comments">
        </div>
    </div>
    
</template>