[FIX] web_editor: add thumbnail image to send attachment

addons/web_editor/static/src/js/backend/fields.js

@@ -118,6 +118,7 @@ var FieldTextHtmlSimple = basic_fields.DebouncedField.extend(TranslatableFieldMi
      */
     _getValue: function () {
         if (this.nodeOptions['style-inline']) {
+            transcoder.linkImgToAttachmentThumbnail(this.$content);
             transcoder.classToStyle(this.$content);
             transcoder.fontToImg(this.$content);
         }

addons/web_editor/static/src/js/editor/transcoder.js

@@ -259,10 +259,40 @@ function styleToClass($editable) {
     $c.remove();
 }
 
+/**
+ * Converts css display for attachment link to real image.
+ * Without this post process, the display depends on the css and the picture
+ * does not appear when we use the html without css (to send by email for e.g.)
+ *
+ * @param {jQuery} $editable
+ */
+function attachmentThumbnailToLinkImg($editable) {
+    $editable.find('a[href*="/web/content/"][data-mimetype]:empty').each(function () {
+        var $link = $(this);
+        var $img = $('<img/>')
+            .attr('src', $link.css('background-image').replace(/(^url\(['"])|(['"]\)$)/g, ''))
+            .css('height', Math.max(1, $link.height()) + 'px')
+            .css('width', Math.max(1, $link.width()) + 'px');
+        $link.append($img);
+    });
+}
+
+/**
+ * Revert attachmentThumbnailToLinkImg changes
+ *
+ * @see attachmentThumbnailToLinkImg
+ * @param {jQuery} $editable
+ */
+function linkImgToAttachmentThumbnail($editable) {
+    $editable.find('a[href*="/web/content/"][data-mimetype] > img').remove();
+}
+
 return {
     fontToImg: fontToImg,
     imgToFont: imgToFont,
     classToStyle: classToStyle,
     styleToClass: styleToClass,
+    attachmentThumbnailToLinkImg: attachmentThumbnailToLinkImg,
+    linkImgToAttachmentThumbnail: linkImgToAttachmentThumbnail,
 };
 });

addons/web_editor/static/src/js/inline.js

@@ -53,6 +53,7 @@ snippet_editor.Class.include({
         this._super.apply(this, arguments);
 
         var $editable = $('#editable_area');
+        transcoder.linkImgToAttachmentThumbnail($editable);
         transcoder.fontToImg($editable);
         transcoder.classToStyle($editable);