doghouse_menu-3.0.x-dev/doghouse_menu.module

<?php

/**
 * @file
 * Contains doghouse_menu.module.
 */

use Drupal\Core\Routing\RouteMatchInterface;
use Drupal\Core\Form\FormStateInterface;
use Drupal\Core\Extension\Extension;

/**
 * Implements hook_help().
 */
function doghouse_menu_help($route_name, RouteMatchInterface $route_match) {
  switch ($route_name) {
    // Main module help for the doghouse_menu module.
    case 'help.page.doghouse_menu':
      $output = '';
      $output .= '<h3>' . t('About') . '</h3>';
      $output .= '<p>' . t('Custom menu functionality') . '</p>';
      return $output;

    default:
  }
}

/**
 * Implements hook_theme().
 */
function doghouse_menu_theme($existing, $type, $theme, $path) {
  return [
    'region__doghouse_menu' => [
      'template' => 'region--doghouse-menu',
      'base hook' => 'region',
    ],
    'doghouse_menu' => [
      'variables' => [
        'items' => NULL,
      ],
    ],
    'doghouse_menu_accordion' => [
      'variables' => [
        'items' => NULL,
      ],
    ],
    'doghouse_menu_toggle' => [
      'variables' => [
        'text' => 'Toggle',
      ],
    ],
    'doghouse_menu_close' => [
      'variables' => [
        'text' => 'Close',
      ],
    ],
  ];
}

/**
 * Implements hook_form_FORM_ID_alter().
 */
function doghouse_menu_form_menu_link_content_form_alter(array &$form, FormStateInterface $form_state, $form_id) {
  $moduleHandler = \Drupal::service('module_handler');
  if ($moduleHandler->moduleExists('menu_link_attributes')) {
    $form['actions']['submit']['#submit'][] = 'doghouse_menu_menu_link_content_form_submit';
  }
}

/**
 * Submit handler for menu link edit form.
 *
 * The menu_link_attributes module does not store classes as an array, this
 * makes it not possible to extend on these classes before rendering.
 */
function doghouse_menu_menu_link_content_form_submit($form, FormStateInterface $form_state) {
  $attrs = $form_state->getValue('attributes');
  foreach ($attrs as $attr => $value) {
    if ($attr === 'class') {
      $attrs[$attr] = [$value];
    }
  }
  $form_state->setValue('attributes', $attrs);
}

/**
 * Create a new region for the doghouse mobile menu.
 */
function doghouse_menu_system_info_alter(array &$info, Extension $file, $type) {
  $theme = \Drupal::service('theme_handler')->getDefault();
  if ($type === 'theme' && $file->getName() === $theme) {
    $info['regions'] = array_merge($info['regions'],  ['doghouse_menu' => 'Doghouse Menu']);
  }
}

/**
 * Attach menu toggle library to the doghouse_menu region.
 */
function doghouse_menu_preprocess_region__doghouse_menu(array &$variables) {
  $variables['#attached']['library'][] = 'doghouse_menu/doghouse_menu_toggle';
}