+ this.editor.setContent(this.history[historyTime]);
+ }
+ });
+ }
+
+ setupFavourites() {
+ for (const button of this.languageButtons) {
+ this.setupFavouritesForButton(button);
+ }
+
+ this.sortLanguageList();
+ }
+
+ /**
+ * @param {HTMLButtonElement} button
+ */
+ setupFavouritesForButton(button) {
+ const language = button.dataset.lang;
+ let isFavorite = this.favourites.has(language);
+ button.setAttribute('data-favourite', isFavorite ? 'true' : 'false');
+
+ onChildEvent(button.parentElement, '.lang-option-favorite-toggle', 'click', () => {
+ isFavorite = !isFavorite;
+
+ if (isFavorite) {
+ this.favourites.add(language);
+ } else {
+ this.favourites.delete(language);
+ }
+
+ button.setAttribute('data-favourite', isFavorite ? 'true' : 'false');
+
+ window.$http.patch('/preferences/update-code-language-favourite', {
+ language,
+ active: isFavorite,
+ });
+
+ this.sortLanguageList();
+ if (isFavorite) {
+ button.scrollIntoView({block: 'center', behavior: 'smooth'});