<?php

/**
 * @file
 * Admin back-office enhancements.
 */

/**
 * Implements hook_page_attachments().
 *
 * Loads the general admin table styling on every admin route (compact
 * paddings + constrained widths, replacing the old matminimal rules).
 *
 * Also loads the term reference tree widget layout (selection tree left,
 * sortable track list right) on admin routes. Attaching it here instead of
 * hook_field_widget_single_element_form_alter() keeps the widget element's
 * own #attached libraries intact: setting #attached in that alter hook
 * prevented FormBuilder's element-info defaults merge ($element += $info)
 * from applying the checkbox_tree element #attached, which silently dropped
 * term_reference_tree/term_reference_tree_js and _css.
 */
function materio_admin_page_attachments(array &$attachments) {
  if (\Drupal::service('router.admin_context')->isAdminRoute()) {
    $attachments['#attached']['library'][] = 'materio_admin/admin_tables';
    $attachments['#attached']['library'][] = 'materio_admin/term_reference_tree';
  }
}