if (Strings.isEmpty(selectedTileId)) {
newEditor = new NewTileFragment(editor.getId(), "new-tile-form-fragment", this, getModel()) {
@Override
protected void onAddTile(String tileId, String tileTypeName) {
BrixNode containerNode = getTileContainerNode();
containerNode.checkout();
BrixNode node = getTileContainerNode().tiles().createTile(tileId, tileTypeName);
getEditor().save(node);
containerNode.save();
containerNode.checkin();
selectedTileId = tileId;