[IMP] web, *: add utils to get dataURL (base64) from file/blob

* = partner_autocomplete, point_of_sale, web_editor,
website_forum, website_slides

This can be used for example to preview an image from a file input field.

It can also be used to send the base64 content of the input by RPC instead of
having to rely on form submit as POST with multipart/form-data.

Technically wrap FileReader.readAsDataURL in a Promise.

This will also be used in task-1930726

PR: #33508

Signed-off-by: Quentin Smetz (qsm) <qsm@odoo.com>

1 files changed, 2 insertions, 5 deletions

diff --git a/addons/partner_autocomplete/static/src/js/partner_autocomplete_core.js b/addons/partner_autocomplete/static/src/js/partner_autocomplete_core.js
index 08d0a9a5149..dec3557a3de 100644
--- a/addons/partner_autocomplete/static/src/js/partner_autocomplete_core.js
+++ b/addons/partner_autocomplete/static/src/js/partner_autocomplete_core.js
@@ -5,6 +5,7 @@ var concurrency = require('web.concurrency');
 
 var core = require('web.core');
 var Qweb = core.qweb;
+var utils = require('web.utils');
 var _t = core._t;
 
 /**
@@ -195,11 +196,7 @@ var PartnerAutocompleteMixin = {
         return new Promise(function (resolve, reject) {
             var xhr = new XMLHttpRequest();
             xhr.onload = function () {
-                var reader = new FileReader();
-                reader.onloadend = function () {
-                    resolve(reader.result);
-                };
-                reader.readAsDataURL(xhr.response);
+                utils.getDataURLFromFile(xhr.response).then(resolve);
             };
             xhr.open('GET', url);
             xhr.responseType = 'blob';