[MIG] web_widget_image_download

web_widget_image_download/README.rst

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+.. image:: https://img.shields.io/badge/licence-LGPL--3-blue.svg
+   :target: http://www.gnu.org/licenses/lgpl-3.0-standalone.html
+   :alt: License: LGPL-3
+
+===========================
+Web Widget - Image Download
+===========================
+
+This module was written to extend the functionality of the image widget and allows to download it.
+
+Usage
+=====
+
+To use this module, you need to:
+
+#. Go to the section `Contacts`.
+#. Click on a contact.
+#. Edit the contact.
+#. Click the `Download` button (between `Edit` and `Clear`).
+
+.. image:: https://odoo-community.org/website/image/ir.attachment/5784_f2813bd/datas
+   :alt: Try me on Runbot
+   :target: https://runbot.odoo-community.org/runbot/162/8.0
+
+Known Issues / Roadmap
+======================
+
+* In order to work correctly, this widget has to detect image type, the server should include this information in the `Content-Type` header. Right now, odoo is not doing so, but a fix has been `proposed <https://github.com/odoo/odoo/pull/12918>`_.
+* For some unknown reason, the widget does not work in the `Preferences` view, because odoo is not rendering the **QWeb** template.
+
+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.
+
+Credits
+=======
+
+Contributors
+------------
+
+* Flavio Corpa <flavio.corpa@tecnativa.com>
+
+Maintainer
+----------
+
+.. image:: https://odoo-community.org/logo.png
+   :alt: Odoo Community Association
+   :target: https://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 https://odoo-community.org.

web_widget_image_download/__init__.py

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+# -*- coding: utf-8 -*-
+# Copyright 2016 Flavio Corpa <flavio.corpa@tecnativa.com>
+# License LGPL-3.0 or later (http://www.gnu.org/licenses/lgpl).

web_widget_image_download/__openerp__.py

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+# -*- coding: utf-8 -*-
+# Copyright 2016 Flavio Corpa <flavio.corpa@tecnativa.com>
+# License LGPL-3.0 or later (http://www.gnu.org/licenses/lgpl).
+{
+    "name": "Web Widget - Image Download",
+    "summary": "Allows to download any image from its widget",
+    "version": "9.0.1.0.0",
+    "category": "web",
+    "website": "https://www.tecnativa.com",
+    "author": "Tecnativa, Odoo Community Association (OCA)",
+    "license": "LGPL-3",
+    "application": False,
+    "installable": True,
+    "data": [
+        "views/assets.xml",
+    ],
+    "depends": [
+        "web",
+    ],
+    "qweb": [
+        "static/src/xml/web_widget_image_download.xml",
+    ]
+}

web_widget_image_download/static/src/css/web_widget_image_download.css

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+/* Copyright 2016 Flavio Corpa <flavio.corpa@tecnativa.com>
+ * License LGPL-3.0 or later (http://www.gnu.org/licenses/lgpl). */
+
+.openerp .oe_application a.oe_form_binary_file_download {
+  color: #eee;
+}

web_widget_image_download/static/src/js/web_widget_image_download.js

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+/*
+ * Copyright 2016 Flavio Corpa <flavio.corpa@tecnativa.com>
+ * License LGPL-3.0 or later (http://www.gnu.org/licenses/lgpl).
+ */
+odoo.define('web_widget_image_download', function (require) {
+    'use strict';
+
+    var common = require('web.form_common');
+
+    common.FieldBinaryImage.include({
+        render_value: function () {
+            this._super();
+
+            var $widget = this.$el.find('.oe_form_binary_file_download');
+
+            this.imgSrc = this.$el.find('img[name="image"]').attr('src');
+
+            $.ajax({
+                type: 'HEAD',
+                url: this.imgSrc,
+                complete: function (xhr) {
+                    // retrieve image type from server ("Content-Type" header)
+                    $widget.attr('download', xhr.getResponseHeader("Content-Type").replace('/', '.'));
+                }
+            });
+
+            // use jquery instead of `replace` with qweb (to avoid breaking inheritance)
+            if (this.has_custom_image()) {
+                this.$el.find('.oe_form_binary_file_clear').removeClass('col-md-offset-5');
+            }
+
+            $widget.attr('href', this.imgSrc);
+        },
+        has_custom_image: function () {
+            // check if the image of the widget is different from the default placeholder
+            return this.imgSrc && !this.imgSrc.includes('/placeholder.png');
+        }
+    });
+});

web_widget_image_download/static/src/xml/web_widget_image_download.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<!-- Copyright 2016 Flavio Corpa <flavio.corpa@tecnativa.com>
+     License LGPL-3.0 or later (http://www.gnu.org/licenses/lgpl). -->
+
+<template>
+    <t t-extend="FieldBinaryImage">
+        <t t-jquery=".oe_form_binary_file_edit" t-operation="after">
+            <t t-if="widget.has_custom_image()">
+                <a class="fa fa-download fa-1g col-md-4 oe_form_binary_file_download" title="Download"></a>
+            </t>
+        </t>
+    </t>
+</template>

web_widget_image_download/views/assets.xml

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+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright 2016 Flavio Corpa <flavio.corpa@tecnativa.com>
+     License LGPL-3.0 or later (http://www.gnu.org/licenses/lgpl). -->
+
+<odoo>
+
+<template id="assets_backend" inherit_id="web.assets_backend">
+    <xpath expr=".">
+        <link rel="stylesheet"
+            href="/web_widget_image_download/static/src/css/web_widget_image_download.css"/>
+        <script type="text/javascript"
+            src="/web_widget_image_download/static/src/js/web_widget_image_download.js"/>
+    </xpath>
+</template>
+
+</odoo>