asu_header.module

<?php

/**
 * @file
 * Contains asu_header.module.
 */

use Drupal\Core\Routing\RouteMatchInterface;

/**
 * Implements hook_help().
 */
function asu_header_help($route_name, RouteMatchInterface $route_match) {
  switch ($route_name) {
    // Main module help for the asu_header module.
    case 'help.page.asu_header':
      $output = '';
      $output .= '<h3>' . t('About') . '</h3>';
      $output .= '<p>' . t('Global header and footer for ASU web standards') . '</p>';
      return $output;

    default:
  }
}

/**
 * Implements hook_menu_links_discovered_alter().
 */
function asu_header_menu_links_discovered_alter(&$links) {
  $links['asu_header.logout']['class'] = 'Drupal\asu_header\Plugin\Menu\SigninSignoutMenuLink';
}

/**
 * Implements hook_theme().
 */
function asu_header_theme($existing, $type, $theme, $path) {
  $templates = $path . '/templates';
  return [
    'asu_footer' => [
      'template' => 'asu-footer',
      'variables' => [
          'module_path' => NULL,
      ],
    ],
    'menu__asu_global' => [
      'base hook' => 'menu',
      'render element' => 'menu',
    ],
    'menu__main__mainnavigation' => [
      'base hook' => 'menu',
      'render element' => 'menu',
    ],
    // The whole thing as one block doesn't quite work
    // maybe mess with it later but it *works* with the
    // separate templates so ignore it for now.
//    'asu_header' => [
//      'template' => 'asu-header',
//      'variables' => [
//        'module_path' => NULL,
//        'site_name' => NULL,
//        'site_slogan' => NULL,
//      ],
//    ],
    'region__top_header' => [
      'template' => 'region--top-header',
      'render element' => 'content',
      'path' => $templates,
      'base hook' => 'region',
    ],
    'block__asuglobalmenu' => [
      'template' => 'block--asuglobalmenu',
      'path' => $templates,
      'base hook' => 'block',
      'render element' => 'content',
    ],
    'region__header' => [
      'template' => 'region--header',
      'render element' => 'content',
      'path' => $templates,
      'base hook' => 'region',
    ],
    'block__system_menu_block__main' => [
      'template' => 'block--system-menu-block--main',
      'render element' => 'content',
      'path' => $templates,
      'base hook' => 'block',
      'variables' => [
        'module_path' => NULL,
        'site_name' => NULL,
        'site_slogan' => NULL,
      ],
    ],
  ];
}


/**
 * Implements hook_preprocess_*()
 * Pass the module path as a variable
 */
function asu_header_preprocess_asu_footer(&$variables, $hook) {
  $module_handler = Drupal::service('module_handler');
  $path = $module_handler->getModule('asu_header')->getPath();

  $variables['module_path'] = $path;
}

/**
 * Implements hook_preprocess_*()
 * Pass the module path as a variable
 */
function asu_header_preprocess_block__system_menu_block__main(&$variables) {
  /* Get module path and pass it as a variable */
  $module_handler = Drupal::service('module_handler');
  $path = $module_handler->getModule('asu_header')->getPath();
  $variables['module_path'] = $path;

  /* Get site info and pass those as variables */
  $config = \Drupal::config('system.site');
  $variables['site_name'] = $config->get('name');
  $variables['site_slogan'] = $config->get('slogan');

}

/**
 * Implements hook_preprocess_*()
 * TODO: Count the number of nolink headings in the menu
 * and pass that as a variable to the menu so we can alter
 * the HTML for >2 columns.
 */
function asu_header_preprocess_menu(&$variables) {
  /* Pass is_front variable to menu templates */
  try {
    $variables['is_front'] = \Drupal::service('path.matcher')->isFrontPage();
  }
  catch (Exception $e) {
    $variables['is_front'] = FALSE;
  }
  $variables['#cache']['contexts'][] = 'url.path.is_front';

  /* Set is_active on item if the link matches current path */
  $current_path = \Drupal::request()->getRequestUri();
  foreach ($variables['items'] as &$item) {
    if ($item['in_active_trail']) {
      if ($item['url']->toString() == $current_path) {
        $item['is_active'] = TRUE;
      }
    }
  }
}


/**
 * Implements hook_preprocess_*()
 * Pass the module path as a variable
 */
//function asu_header_preprocess_asu_header(&$variables, $hook) {
//  /* Get module path and pass it as a variable */
//  $module_handler = Drupal::service('module_handler');
//  $path = $module_handler->getModule('asu_header')->getPath();
//  $variables['module_path'] = $path;
//
//  /* Get site info and pass those as variables */
//  $config = \Drupal::config('system.site');
//  $variables['site_name'] = $config->get('name');
//  $variables['site_slogan'] = $config->get('slogan');
//
//}


function asu_header_block_build_alter(array &$build, \Drupal\Core\Block\BlockPluginInterface $block) {
  if ($block->getPluginId() === "system_menu_block:asu_global") {
    $build['#cache']['contexts'][] = 'user';
  }
}