oe_theme.theme

<?php

/**
 * @file
 * Functions to support theming.
 */

use Drupal\Core\Render\Element;

/**
 * Implements hook_preprocess_breadcrumb().
 */
function oe_theme_preprocess_breadcrumb(&$variables) {
  $variables['segments'] = array_map(function ($item) {
    return [
      'target' => $item['url'],
      'title' => $item['text'],
    ];
  }, $variables['breadcrumb']);
}

/**
 * Implements hook_preprocess_menu__main().
 */
function oe_theme_preprocess_menu__main(&$variables) {
  // Massage data to be compliant with ECL navigation menu data structure.
  $variables['links'] = array_map(function ($item) {
    return [
      'href' => $item['url'],
      'label' => $item['title'],
      'is_active' => $item['in_active_trail'],
    ];
  }, $variables['items']);

  foreach ($variables['items'] as $name => $link) {
    $variables['links'][$name]['children_links'] = array_map(function ($item) {
      return [
        'href' => $item['url'],
        'label' => $item['title'],
        'is_active' => $item['in_active_trail'],
      ];
    }, $variables['items'][$name]['below']);
  }
}

/**
 * Implements hook_theme_suggestions_HOOK_alter().
 */
function oe_theme_theme_suggestions_field_alter(array &$suggestions, array $variables) {
  // Do not output field labels and wrapping markup for paragraph fields.
  if (isset($variables['element']['#entity_type']) && $variables['element']['#entity_type'] === 'paragraph') {
    $suggestions[] = 'field__bare';
  }
}

/**
 * Implements hook_preprocess_paragraph().
 */
function oe_theme_preprocess_paragraph__oe_links_block(&$variables) {
  // Massage data to be compliant with ECL links block component data structure.
  foreach (Element::children($variables['content']['field_oe_links']) as $index) {
    $variables['links'][] = [
      'label' => $variables['content']['field_oe_links'][$index]['#title'],
      'href' => $variables['content']['field_oe_links'][$index]['#url'],
    ];
  }
}

/**
 * Implements hook_preprocess_paragraph__oe_accordion().
 */
function oe_theme_preprocess_paragraph__oe_accordion(&$variables) {
  // Massage data to be compliant with ECL accordions component data structure.
  $builder = \Drupal::entityTypeManager()->getViewBuilder('paragraph');
  $variables['panels'] = [];

  /** @var \Drupal\entity_reference_revisions\Plugin\Field\FieldType\EntityReferenceRevisionsItem $field_item */
  foreach ($variables['paragraph']->get('field_oe_paragraphs') as $field_item) {
    $paragraph = $field_item->entity;
    $variables['panels'][] = [
      'id' => $paragraph->id(),
      'heading' => [
        'title' => $builder->viewField($paragraph->get('field_oe_text')),
        'icon' => $paragraph->get('field_oe_icon')->value,
      ],
      'body' => $builder->viewField($paragraph->get('field_oe_text_long')),
    ];
  }
}

/**
 * Implements hook_preprocess_menu_local_tasks().
 */
function oe_theme_preprocess_menu_local_tasks(&$variables) {
  foreach ($variables['primary'] as $link) {
    /** @var Drupal\Core\Url $url */
    $url = $link['#link']['url'];
    if ($url->access($variables['user'])) {
      $variables['primary_links'][] = [
        'href' => $url,
        'label' => $link['#link']['title'],
        'is_active' => $link['#active'],
      ];
    }
  }

  foreach ($variables['secondary'] as $link) {
    /** @var Drupal\Core\Url $url */
    $url = $link['#link']['url'];
    if ($url->access($variables['user'])) {
      $variables['secondary_links'][] = [
        'href' => $url,
        'label' => $link['#link']['title'],
        'is_active' => $link['#active'],
      ];
    }
  }
}

/**
 * Implements hook_preprocess_input__radio().
 */
function oe_theme_preprocess_input__radio(&$variables) {
  _oe_theme_preprocess_input_label_wrapper($variables);
}

/**
 * Implements hook_preprocess_input__checkbox().
 */
function oe_theme_preprocess_input__checkbox(&$variables) {
  _oe_theme_preprocess_input_label_wrapper($variables);
}

/**
 * Helper function to additionally preprocess checkbox and radio elements.
 *
 * Moves the label element to the input template and creates some helper
 * variables to be used with the ECL templates.
 *
 * @param array $variables
 *   Set of available variables.
 */
function _oe_theme_preprocess_input_label_wrapper(array &$variables) {
  $element = &$variables['element'];
  $variables['has_error'] = !empty($element['#errors']);
  if (isset($element['#title']) && $element['#title'] !== '') {
    $variables['title'] = ['#markup' => $element['#title']];
  }
}

/**
 * Implements hook_preprocess_form_element().
 *
 * Disables displaying of the label for checkbox and radio elements, as the
 * label is already rendered in the input template.
 */
function oe_theme_preprocess_form_element(&$variables) {
  if (in_array($variables['element']['#type'], ['checkbox', 'radio'])) {
    $variables['label_display'] = 'none';
  }
}