[ADD] add module web_offline_warning

web_offline_warning/README.rst

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+Offline warning message
+=======================
+
+This module replaces the default error message when the server cannot be reached by a more user-friendly warning message.
+
+Usage
+=====
+
+When an RPC call from the browser fails with a generic error message, a warning message is shown to inform the user that the server cannot be reached.
+
+Bug Tracker
+===========
+
+Bugs are tracked on `GitHub Issues <https://github.com/OCA/web/issues>`_.
+In case of trouble, please check there if your issue has already been reported.
+If you spotted it first, help us smashing it by providing a detailed and welcomed feedback
+`here <https://github.com/OCA/web/issues/new?body=module:%20web_offline_warning%0Aversion:%208.0%0A%0A**Steps%20to%20reproduce**%0A-%20...%0A%0A**Current%20behavior**%0A%0A**Expected%20behavior**>`_.
+
+
+Credits
+=======
+
+Contributors
+------------
+
+* Thomas Rehn <thomas.rehn@initos.com>
+
+Maintainer
+----------
+
+.. image:: http://odoo-community.org/logo.png
+    :alt: Odoo Community Association
+    :target: http://odoo-community.org
+
+This module is maintained by the OCA.
+
+OCA, or the Odoo Community Association, is a nonprofit organization whose mission is to support the collaborative development of Odoo features and promote its widespread use.
+
+To contribute to this module, please visit http://odoo-community.org.

web_offline_warning/__init__.py

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+# -*- coding: utf-8 -*-
+# © 2016 Thomas Rehn (initOS GmbH)
+# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl).

web_offline_warning/__openerp__.py

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+# -*- coding: utf-8 -*-
+# © 2016 Thomas Rehn (initOS GmbH)
+# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl).
+{
+    'name': 'User-friendly Offline Warning',
+    'version': '8.0.1.0.0',
+    'author': 'initOS GmbH, Odoo Community Association (OCA)',
+    'depends': [
+        'web',
+    ],
+    'data': [
+        'views/assets.xml',
+    ],
+    'description': "",
+    'test': [],
+    'installable': True,
+    'auto_install': False,
+    'license': 'AGPL-3',
+}

web_offline_warning/i18n/de.po

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+# Translation of Odoo Server.
+# This file contains the translation of the following modules:
+#	* web_offline_warning
+#
+msgid ""
+msgstr ""
+"Project-Id-Version: Odoo Server 8.0\n"
+"Report-Msgid-Bugs-To: \n"
+"POT-Creation-Date: 2016-03-17 15:08+0000\n"
+"PO-Revision-Date: 2016-03-17 15:08+0000\n"
+"Last-Translator: <>\n"
+"Language-Team: \n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=UTF-8\n"
+"Content-Transfer-Encoding: \n"
+"Plural-Forms: \n"
+
+#. module: web_offline_warning
+#. openerp-web
+#: code:addons/web_offline_warning/static/src/js/web_offline_warning.js:20
+#, python-format
+msgid "Ok"
+msgstr "Ok"
+
+#. module: web_offline_warning
+#. openerp-web
+#: code:addons/web_offline_warning/static/src/js/web_offline_warning.js:23
+#, python-format
+msgid "The server cannot be reached. You are probably offline."
+msgstr "Der Server kann momentan nicht erreicht werden. Sie sind wahrscheinlich offline."
+
+#. module: web_offline_warning
+#. openerp-web
+#: code:addons/web_offline_warning/static/src/js/web_offline_warning.js:18
+#, python-format
+msgid "Warning"
+msgstr "Warnung"
+

web_offline_warning/i18n/web_offline_warning.pot

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+# Translation of Odoo Server.
+# This file contains the translation of the following modules:
+#	* web_offline_warning
+#
+msgid ""
+msgstr ""
+"Project-Id-Version: Odoo Server 8.0\n"
+"Report-Msgid-Bugs-To: \n"
+"POT-Creation-Date: 2016-03-17 15:08+0000\n"
+"PO-Revision-Date: 2016-03-17 15:08+0000\n"
+"Last-Translator: <>\n"
+"Language-Team: \n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=UTF-8\n"
+"Content-Transfer-Encoding: \n"
+"Plural-Forms: \n"
+
+#. module: web_offline_warning
+#. openerp-web
+#: code:addons/web_offline_warning/static/src/js/web_offline_warning.js:20
+#, python-format
+msgid "Ok"
+msgstr ""
+
+#. module: web_offline_warning
+#. openerp-web
+#: code:addons/web_offline_warning/static/src/js/web_offline_warning.js:23
+#, python-format
+msgid "The server cannot be reached. You are probably offline."
+msgstr ""
+
+#. module: web_offline_warning
+#. openerp-web
+#: code:addons/web_offline_warning/static/src/js/web_offline_warning.js:18
+#, python-format
+msgid "Warning"
+msgstr ""
+

web_offline_warning/static/src/js/web_offline_warning.js

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+openerp.web_offline_warning = function(openerp) {
+    var _t     = openerp.web._t;
+    var QWeb   = openerp.web.qweb;
+
+    /**
+     * Handle general XmlHttpRequestErrors, which occur when the server cannot be reached.
+     */
+    openerp.web.GenericXmlHttpRequestErrorHandler = openerp.web.Dialog.extend(openerp.web.ExceptionHandler, {
+        init: function(parent, error) {
+            this._super(parent);
+            this.error = error;
+        },
+        display: function() {
+            var self = this;
+
+            new openerp.web.Dialog(this, {
+                size: 'medium',
+                title: "Odoo " + _t("Warning"),
+                buttons: [
+                    {text: _t("Ok"), click: function() { self.$el.parents('.modal').modal('hide');  self.destroy();}}
+                ],
+            }, QWeb.render('CrashManager.warning',
+                           {message: _t("The server cannot be reached. You are probably offline.")})
+            ).open();
+        }
+    });
+    openerp.web.crash_manager_registry.add(void(0), 'openerp.web.GenericXmlHttpRequestErrorHandler');
+}

web_offline_warning/views/assets.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<!-- © 2016 Thomas Rehn (initOS GmbH)
+     License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl). -->
+
+<openerp>
+    <data>
+        <template id="assets_backend" name="web_offline_warning assets" inherit_id="web.assets_backend">
+            <xpath expr="." position="inside">
+                <script type="text/javascript" src="/web_offline_warning/static/src/js/web_offline_warning.js"></script>
+            </xpath>
+        </template>
+    </data>
+</openerp>