kkb_wayfinder.module

<?php

/**
 * @file
 * Adds button to material to find it physically at the library.
 */

/**
 * Implements hook_menu().
 */
function kkb_wayfinder_menu() {
  $items['admin/config/ding/wayfinder'] = array(
    'title' => 'Wayfinder settings',
    'description' => 'Manage wayfinder branch mapping.',
    'page callback' => 'drupal_get_form',
    'page arguments' => array('kkb_wayfinder_admin_form'),
    'access arguments' => array('administer ding provider'),
    'file' => 'kkb_wayfinder.admin.inc',
  );

  return $items;
}

/**
 * Implements hook_ding_entity_buttons().
 */
function kkb_wayfinder_ding_entity_buttons($type, $entity) {
  if ($type == 'ding_entity') {
    $return = array();

    $branches = variable_get('kkb_wayfinder_branches', array());

    $availability = ding_availability_holdings(array($entity->localId));
    $options = array();
    foreach ($availability[$entity->localId]['holdings'] as $holding) {
      if ($holding['available_count'] > 0 && isset($branches[drupal_strtolower($holding['placement'][0])])) {
        $options[] = array(
          'custom' => array(
            'title' => $holding['placement'][0],
            'href' => '#',
            'attributes' => array(
              'class' => array(),
              'data-wayfinder-faust' => $entity->localId,
              'data-wayfinder-branch' => $branches[drupal_strtolower($holding['placement'][0])],
            ),
          ),
        );
      }
    }
    if ($options) {
      // We have to use drupal_add_js() because #attached on the
      // ding_list_add_button is ignored for some reason.
      drupal_add_js(drupal_get_path('module', 'kkb_wayfinder') . '/js/kkb_wayfinder.js');
      drupal_add_js('https://os2.wayfindingkkb.dk/embed/v1/wayfinding.js', 'external');

      $return[] = array(
        '#theme' => 'ding_list_add_button',
        '#title' => t('See on map'),
        '#value' => $entity->ding_entity_id,
        '#options' => $options,
      );
    }
    return $return;
  }

}