client: Repair attribute editor

src/public/app/widgets/attribute_widgets/attribute_editor.js

@@ -341,6 +341,22 @@ export default class AttributeEditorWidget extends NoteContextAwareWidget {
     }
 
     async initEditor() {
+        await libraryLoader.requireLibrary(libraryLoader.CKEDITOR);
+
+        this.$widget.show();
+
+        this.$editor.on("click", e => this.handleEditorClick(e));
+
+        this.textEditor = await CKEditor.BalloonEditor.create(this.$editor[0], editorConfig);
+        this.textEditor.model.document.on('change:data', () => this.dataChanged());
+        this.textEditor.editing.view.document.on('enter', (event, data) => {
+            // disable entering new line - see https://github.com/ckeditor/ckeditor5/issues/9422
+            data.preventDefault();
+            event.stop();
+        }, {priority: 'high'});
+
+        // disable spellcheck for attribute editor
+        this.textEditor.editing.view.change(writer => writer.setAttribute('spellcheck', 'false', this.textEditor.editing.view.document.getRoot()));
     }
 
     dataChanged() {