adds an option to disable the notification to existing followers

on a new email dropped to a record.

mail_drop_target/__manifest__.py

@@ -18,5 +18,6 @@
     },
     "data": [
         'views/templates.xml',
+        'views/res_config_settings_views.xml',
     ],
 }

mail_drop_target/models/__init__.py

@@ -1,3 +1,4 @@
 # Copyright 2018 Therp BV <https://therp.nl>
 # License AGPL-3.0 or later (https://www.gnu.org/licenses/agpl.html).
 from . import mail_thread
+from . import res_config_settings

mail_drop_target/models/mail_thread.py

@@ -15,7 +15,14 @@ class MailThread(models.AbstractModel):
     def message_drop(self, model, message, custom_values=None,
                      save_original=False, strip_attachments=False,
                      thread_id=None):
-        result = self.message_process(
+        disable_notify_mail_drop_target = \
+            self.env["ir.config_parameter"].get_param(
+                "mail_drop_target.disable_notify", default=False)
+        self_message_process = self
+        if disable_notify_mail_drop_target:
+            self_message_process = self_message_process.with_context(
+                message_create_from_mail_mail=True)
+        result = self_message_process.message_process(
             model, message, custom_values=custom_values,
             save_original=save_original, strip_attachments=strip_attachments,
             thread_id=thread_id

mail_drop_target/models/res_config_settings.py

@@ -0,0 +1,33 @@
+# Copyright 2019 Eficent Business and IT Consulting Services, S.L.
+#                <https//www.eficent.com>
+# License AGPL-3.0 or later (https://www.gnu.org/licenses/agpl.html).
+from odoo import api, fields, models
+
+
+class ResConfigSettings(models.TransientModel):
+    _inherit = 'res.config.settings'
+
+    disable_notify_mail_drop_target = fields.Boolean(
+        'Disable Notification followers on mail dropped to a Thread',
+        help="When this setting is set, when a user drops an "
+             "email into an existing thread the followers of the thread will "
+             "not be notified. This sets an ir.config.parameter "
+             "mail_drop_target.disable_notify")
+
+    @api.model
+    def get_values(self):
+        res = super(ResConfigSettings, self).get_values()
+
+        disable_notify_mail_drop_target = \
+            self.env["ir.config_parameter"].get_param(
+                "mail_drop_target.disable_notify", default=False)
+        res.update(
+            disable_notify_mail_drop_target=disable_notify_mail_drop_target,
+        )
+        return res
+
+    def set_values(self):
+        super(ResConfigSettings, self).set_values()
+        self.env['ir.config_parameter'].set_param(
+            "mail_drop_target.disable_notify",
+            self.disable_notify_mail_drop_target or '')

mail_drop_target/readme/CONFIGURATION.rst

@@ -0,0 +1,3 @@
+To disable the automatic notification to existing followers when you drop an
+email to a record, go to *Settings*, activate the developer mode, and then go to
+*Settings / General Settings* and set the flag 'Disable Mail Drag&Drop Notification'.

mail_drop_target/readme/DESCRIPTION.rst

@@ -1,3 +1,7 @@
 This module was written to allow users to drag&drop emails from their desktop to Odoo.
 
 It supports as well RFC822 .eml files as Outlook .msg (those only if `an extra library <https://github.com/mattgwwalker/msg-extractor>`_ is installed) files.
+
+When the mail is dropped to an odoo record, it will automatically send a notification
+of that new message that has been added to all the existing followers. It is possible
+to disable this notification.

mail_drop_target/tests/test_mail_drop_target.py

@@ -10,6 +10,7 @@ class TestMailDropTarget(TransactionCase):
         self.partner = self.env['res.partner'].create({
             'name': 'TEST PARTNER'
         })
+        self.partner.message_subscribe(partner_ids=self.partner.ids)
 
     def test_eml(self):
         message = tools.file_open(
@@ -36,6 +37,9 @@ class TestMailDropTarget(TransactionCase):
             self.partner._name, message, thread_id=self.partner.id)
         self.partner.refresh()
         self.assertEqual(comments+1, len(self.partner.message_ids))
+        msg = self.partner.message_ids.filtered(
+            lambda m: m.subject == 'Test')
+        self.assertIsNotNone(msg.needaction_partner_ids)
         with self.assertRaises(exceptions.Warning):
             self.partner.message_process_msg(
                 self.partner._name, message, thread_id=self.partner.id)
@@ -46,3 +50,24 @@ class TestMailDropTarget(TransactionCase):
             new=False,
         ):
             self.test_msg()
+
+    def test_msg_no_notification(self):
+        message = base64.b64encode(tools.file_open(
+            'sample.msg',
+            mode='rb',
+            subdir="addons/mail_drop_target/tests"
+        ).read())
+        settings = self.env['res.config.settings'].create({})
+        settings.disable_notify_mail_drop_target = True
+        settings.execute()
+        comments = len(self.partner.message_ids)
+        self.partner.message_process_msg(
+            self.partner._name, message, thread_id=self.partner.id)
+        self.partner.refresh()
+        self.assertEqual(comments+1, len(self.partner.message_ids))
+        msg = self.partner.message_ids.filtered(
+            lambda m: m.subject == 'Test')
+        self.assertEqual(len(msg.needaction_partner_ids), 0)
+        with self.assertRaises(exceptions.Warning):
+            self.partner.message_process_msg(
+                self.partner._name, message, thread_id=self.partner.id)

mail_drop_target/views/res_config_settings_views.xml

@@ -0,0 +1,26 @@
+<?xml version="1.0" encoding="utf-8"?>
+<odoo>
+    <data>
+        <record id="res_config_settings_view_form" model="ir.ui.view">
+            <field name="name">res.config.settings.view.form.inherit.mail</field>
+            <field name="model">res.config.settings</field>
+            <field name="inherit_id" ref="mail.res_config_settings_view_form"/>
+            <field name="arch" type="xml">
+                <div id="emails" position="inside">
+                    <div class="col-xs-12 col-md-6 o_setting_box">
+                        <div class="o_setting_left_pane">
+                            <field name="disable_notify_mail_drop_target"/>
+                        </div>
+                        <div class="o_setting_right_pane">
+                            <label string="Disable Mail Drag&amp;Drop Notification" for="disable_notify_mail_drop_target"/>
+                            <div class="text-muted">
+                                When a user drops an email into an existing thread
+                                the followers of the thread will not be notified.
+                            </div>
+                        </div>
+                    </div>
+                </div>
+            </field>
+        </record>
+    </data>
+</odoo>