Use plaintext value for field value tooltips in web UI (#7388)

Fix #7383

app/javascript/mastodon/actions/importer/normalizer.js

 import escapeTextContentForBrowser from 'escape-html';
 import emojify from '../../features/emoji/emoji';
+import { unescapeHTML } from '../../utils/html';
 
 const domParser = new DOMParser();
 
@@ -22,6 +23,7 @@ export function normalizeAccount(account) {
       ...pair,
       name_emojified: emojify(escapeTextContentForBrowser(pair.name)),
       value_emojified: emojify(pair.value, emojiMap),
+      value_plain: unescapeHTML(pair.value),
     }));
   }
 

app/javascript/mastodon/actions/notifications.js

@@ -8,6 +8,7 @@ import {
   importFetchedStatuses,
 } from './importer';
 import { defineMessages } from 'react-intl';
+import { unescapeHTML } from '../utils/html';
 
 export const NOTIFICATIONS_UPDATE      = 'NOTIFICATIONS_UPDATE';
 export const NOTIFICATIONS_UPDATE_NOOP = 'NOTIFICATIONS_UPDATE_NOOP';
@@ -31,13 +32,6 @@ const fetchRelatedRelationships = (dispatch, notifications) => {
   }
 };
 
-const unescapeHTML = (html) => {
-  const wrapper = document.createElement('div');
-  html = html.replace(/<br \/>|<br>|\n/g, ' ');
-  wrapper.innerHTML = html;
-  return wrapper.textContent;
-};
-
 export function updateNotifications(notification, intlMessages, intlLocale) {
   return (dispatch, getState) => {
     const showInColumn = getState().getIn(['settings', 'notifications', 'shows', notification.type], true);

app/javascript/mastodon/features/account/components/header.js

@@ -146,7 +146,7 @@ export default class Header extends ImmutablePureComponent {
               {fields.map((pair, i) => (
                 <dl key={i}>
                   <dt dangerouslySetInnerHTML={{ __html: pair.get('name_emojified') }} title={pair.get('name')} />
-                  <dd dangerouslySetInnerHTML={{ __html: pair.get('value_emojified') }} title={pair.get('value')} />
+                  <dd dangerouslySetInnerHTML={{ __html: pair.get('value_emojified') }} title={pair.get('value_plain')} />
                 </dl>
               ))}
             </div>

app/javascript/mastodon/utils/html.js

+export const unescapeHTML = (html) => {
+  const wrapper = document.createElement('div');
+  html = html.replace(/<br \/>|<br>|\n/g, ' ');
+  wrapper.innerHTML = html;
+  return wrapper.textContent;
+};