ding_library.module

<?php
/**
 * @file
 * Code for the Ding library feature.
 */


/**
 * Implements hook_page_build().
 *
 * @todo Remove this crap when Opening Hours has valid markup.
 */
function ding_library_page_build(&$page) {
  if ($page['#type']=='page' && isset($page['content']['system_main']['content']['#markup'])) {
    $page['content']['system_main']['content']['#markup'] .= '<div id="prev" style="display:none;">Helper Content Previous!</div>';
    $page['content']['system_main']['content']['#markup'] .= '<div id="next" style="display:none;">Helper Content Next!</div>';
  }
}

/**
 * Implements hook_init().
 */
function ding_library_init() {
  if ($_GET['q'] == 'libraries') {
    drupal_add_js(drupal_get_path('module', 'ding_library') . '/js/ding_library.map.js', array(
      'scope' => 'footer',
      'weight' => 42,
    ));
  }
}

/**
 * Implements hook_enable().
 */
function ding_library_enable() {
  $path = array(
    'source' => 'libraries',
    'language' => 'da',
  );

  // Create Danish alias for libraries if needed.
  if (!path_load($path)) {
    $path['alias'] = 'biblioteker';
    path_save($path);
  }
}



/**
 * Implements hook_block_info().
 */
function ding_library_block_info() {
  return array(
    'library_address' => array(
      'info' => 'Library address',
      'cache' => DRUPAL_CACHE_GLOBAL,
    ),
    'ding_menu' => array(
      'info' => 'Ding main menu',
      'cache' => DRUPAL_CACHE_PER_PAGE,
    ),
    'ding_sidebar_menu' => array(
      'info' => 'Ding sidebar menu',
      'cache' => DRUPAL_CACHE_PER_PAGE,
    ),
  );
}

/**
 * Implements hook_block_configure().
 */
function ding_library_block_configure($delta = '') {
  $form = array();
  $libraries = array(
    '' => t('None selected'),
  );
  if ($delta == 'library_address') {
    $query = db_select('node', 'n')
      ->fields('n', array('nid', 'title'))
      ->condition('type', 'ding_library')
      ->orderBy('title', 'ASC');

    foreach ($query->execute() as $row) {
      $libraries[$row->nid] = $row->title;
    }

    $form['library_nid'] = array(
      '#type' => 'select',
      '#title' => t('Library'),
      '#default_value' => variable_get('ding_library_address_nid', NULL),
      '#options' => $libraries,
      '#description' => t('The library whose address to display.'),
    );
  }
  return $form;
}

/**
 * Implements hook_block_save().
 */
function ding_library_block_save($delta = '', $edit = array()) {
  if ($delta == 'library_address') {
    variable_set('ding_library_address_nid', $edit['library_nid']);
  }
}

/**
 * Implements hook_block_view().
 */
function ding_library_block_view($delta = '') {
  $block = array();
  $node = NULL;
  if ($delta == 'library_address') {
    $block['subject'] = t('Address');
    $node = NULL;
    $nid = variable_get('ding_library_address_nid', '');
    if (!empty($nid)) {
      $node = node_load($nid);
    }

    $block['content'] = array(
      '#theme' => 'ding_library_address',
      '#node' => $node,
    );
  }
  if ($delta == 'ding_menu') {
    $block['subject'] = t('Main menu');

    $l2_menu = $current_library = $level1_links = $level2_links = array();
    $main_menu = menu_build_tree('main-menu');

    // First level of main menu.
    // We added the i18n_menu module as a dependency in
    // ding_library_update_7003() but we check for the existence to ensure a
    // clean upgrade path.
    // TODO: translation generates notices in node_page_title (node.inc, 2075)
    //if (module_exists('i18n_menu')) {
    //  $main_menu = i18n_menu_localize_tree($main_menu);
    //}

    $main_menu = menu_build_tree('main-menu');
    $active_trail = menu_get_active_trail();

    // Prepare L1 menu, skip hidden items
    foreach ($main_menu as $index1 => $level1_item) {
      if (!$level1_item['link']['hidden']) {
        // Key is used as class when themeing.
        $level1_links['menu-' . $level1_item['link']['mlid']] = array(
          'href' => $level1_item['link']['href'],
          'title' => $level1_item['link']['link_title'],
        );
        $l2_menu[$level1_item['link']['mlid']] = $level1_item['below'];
      }
    }

    // Find and save the active submenu
    $l2_ids = array_keys($l2_menu);
    $parent_item = NULL;
    foreach ($active_trail as $item) {
      if (isset($item['plid']) && in_array($item['plid'], $l2_ids)) {
        $parent_item = $item['plid'];
      }
      elseif (isset($item['plid']) && $item['plid'] == 0) { // && $item['module'] == 'ding_library_menu'
        $parent_item = $item['mlid'];
      }
      if ($parent_item) {
        $current_library['href'] = $level1_links['menu-' . $parent_item]['href'];
        $current_library['title'] = $level1_links['menu-' . $parent_item]['title'];
        // Prepare L2 menu, skip hidden items
        if (is_array($l2_menu[$parent_item])) {
          foreach ($l2_menu[$parent_item] as $level2_item) {
            if (!$level2_item['link']['hidden']) {
              $level2_links['menu-' . $level2_item['link']['mlid']] = array(
                'href' => $level2_item['link']['href'],
                'title' => $level2_item['link']['link_title'],
              );
            }
          }
        }
        // Set parent as active by changing key to 'active'
        $level1_keys = join('|', array_keys($level1_links));
        $level1_keys = str_replace('menu-' . $parent_item, 'active', $level1_keys);
        $level1_links = array_combine(explode('|', $level1_keys), array_values($level1_links));
        break;
      }
    }

    // Theme the lot as a list of links.
    $block['content']['main-menu'] = array(
      '#markup' => theme('links__library_menu', array(
        'links' => $level1_links,
        'heading' => array(
          'text' => t('Main menu'),
          'level' => 'h2',
          'class' => array('element-invisible'),
        ),
      )),
      '#prefix' => '<div class="main-menu">',
      '#suffix' => '</div>',
    );


    // And add the library children items.
    if (count($level2_links)) {
      // Add in the library as the first item of the list.
      $level2_links['menu-0'] = array(
        'href' => $current_library['href'],
        'title' => t('Frontpage'),
      );
      ksort($level2_links);

      $block['content']['library-menu'] = array(
        '#markup' => theme('links__library_menu', array(
          'links' => $level2_links,
          'heading' => array(
            'text' => t('@lib submenu', array('@lib' => $current_library['title'])),
            'level' => 'h2',
          ),
        )),
        '#prefix' => '<div class="library-menu clearfix">',
        '#suffix' => '</div>',
      );
    }
  }

  if ($delta == 'ding_sidebar_menu') {
    $trail = menu_get_active_trail();

    if (!empty($trail[1])) {
      $tree = menu_tree_page_data($trail[1]['menu_name']);

      foreach ($tree as $item) {
        if ($item['link']['in_active_trail']) {
          // If the item is in the active trail, we continue in the subtree.
          $tree = empty($item['below']) ? array() : $item['below'];

          // Library content type behavior.
          // Check if the current page is a library and show only links below it.
          if (!empty($tree)) {
              foreach ($tree as $item) {
                  if ($item['link']['in_active_trail']) {
                      $node = menu_get_object();
                      if ($node && $node->type == 'ding_library') {
                          $tree = $item['below'];
                          break;
                      }
                  }
              }
          }
          break;
        }
      }

      // If we have a tree, render it.
      if (!empty($tree)) {
        $block['content'] = menu_tree_output($tree);
      }
    }
  }
  return $block;
}

/**
 * Implements hook_theme().
 */
function ding_library_theme() {
  return array(
    'ding_library_address' => array(
      'render element' => 'element',
      'template' => 'ding-library-address',
    ),
  );
}

/**
 * Preprocessor.
 */
function template_preprocess_ding_library_address(&$vars) {
  $node = $vars['element']['#node'];

  // Ensure empty strings as default.
  $vars += array(
    'name' => '',
    'address' => '',
    'city' => '',
    'phone' => '',
    'fax' => '',
    'mail' => '',
  );

  if ($node) {
    $languages = field_language('node', $node);
    $vars['name'] = check_plain($node->title);
    if (!empty($node->field_address[$languages['field_address']][0]) && ($address = $node->field_address[$languages['field_address']][0])) {
      $vars['address'] = check_plain($address['thoroughfare']);
      if ($address['premise']) {
        $vars['address'] .= ', ' . $address['premise'];
      }
      $vars['city'] = join(' ', array(check_plain($address['postal_code']), check_plain($address['locality'])));
    }

    if (!empty($node->field_phone[$languages['field_phone']][0]) &&
      ($phone = $node->field_phone[$languages['field_phone']][0]['safe_value'])) {
      $vars['phone'] = t('Phone: @phone_number', array('@phone_number' => $phone));
    }

    if (!empty($node->field_email[$languages['field_email']][0]) &&
      ($mail = $node->field_email[$languages['field_email']][0])) {
      $vars['mail'] = l($mail['email'], 'mailto:' . $mail['email']);
    }
  }
  elseif (user_access('administer blocks')) {
    $vars['name'] = t('Please select a library to display address information for at the <a href="!link">block configuration page</a>.', array('!link' => url('admin/structure/block/manage/ding_library/library_address/configure')));
  }
}

/**
 * Implements hook_form_FORM_ID_alter().
 */
function ding_library_form_ding_library_node_form_alter(&$form, &$form_state) {
  if (isset($form['field_slug'][$form['#node']->language])) {
    $form['field_slug'][$form['#node']->language][0]['#element_validate'][] = 'ding_library_slug_validate';
  }
  elseif (isset($form['field_slug']['und'])) {
    $form['field_slug']['und'][0]['#element_validate'][] = 'ding_library_slug_validate';
  }
}

/**
 * Implements hook_ctools_plugin_directory -
 */
function ding_library_ctools_plugin_directory($owner, $plugin_type) {
  if ($owner == 'ctools' && $plugin_type == 'content_types') {
    return 'plugins/content_types';
  }
}

/**
 * Custom validate handler for the slug field.
 *
 * Don't allow charecters that aren't URL friendly, such as # , etc.
 */
function ding_library_slug_validate(&$form, &$form_state) {
  // Try to get the slug value.
  if (isset($form_state['values']['field_slug'][$form_state['node']->language])) {
    $slug = $form_state['values']['field_slug'][$form_state['node']->language][0]['value'];
  }
  elseif (isset($form_state['values']['field_slug']['und'])) {
    $slug = $form_state['values']['field_slug']['und'][0]['value'];
  }

  // If we found the slug do the actual validation.
  if (!empty($slug)) {
    if (!(preg_match('/^[a-z0-9_\-]+$/', $slug))) {
      form_set_error(implode('][', $form['#parents']), t('Illeagal charecters detected, only small letters (a-z), numbers (0-9), dashes (-) and underscores (_) allowed'));
    }
  }
}

/**
 * Implements hook_views_data_alter().
 */
function ding_library_views_data_alter(&$data) {
  foreach (field_info_fields() as $name => $field) {
    $name = 'field_data_' . $name;
    if ($field['type'] == 'group') {
      foreach ($data[$name] as $column => $views_data) {
        if (strpos($column, 'gid') !== FALSE) {
          $data[$name]['ding_library_nid'] = $views_data;
          unset($data[$name]['ding_library_nid']['filter']);
          unset($data[$name]['ding_library_nid']['sort']);
          $data[$name]['ding_library_nid']['title'] = str_replace('gid', 'nid', $data[$name]['ding_library_nid']['title']);
          $data[$name]['ding_library_nid']['title short'] = str_replace('gid', 'nid', $data[$name]['ding_library_nid']['title short']);
          $data[$name]['ding_library_nid']['argument']['handler'] = 'ding_library_nid_to_gid_argument';
        }
      }
    }
  }
}

/**
 * Implements hook_og_audience_options_alter().
 * We need this to bypass any group membership checks for any users to allow
 * them posting events/news to any library.
 */
function ding_library_og_audience_options_alter(&$options, &$opt_group, $account) {
  // Expose all active groups to the user.
  $options['content groups'] = og_get_all_group();
}

/**
 * Implements hook_panels_post_render().
 */
function ding_library_panels_post_render($display) {
  // Add custom js to Ding library node page.
  $is_node_page = strpos($display->cache_key, 'panel_context:node_view:node_view_panel_') !== FALSE;
  $is_ding_library = FALSE;
  if (!empty($display->context['argument_entity_id:node_1']->data->type)) {
    $is_ding_library = $display->context['argument_entity_id:node_1']->data->type == 'ding_library';
  }

  if ($is_node_page && $is_ding_library) {
    drupal_add_js(
      drupal_get_path('module', 'ding_library') . '/js/ding_library.node_map.js',
      array('scope' => 'footer')
    );
  }
}

/**
 * Implements hook_preprocess_HOOK().
 * Extend panel block's classes.
 */
function ding_library_preprocess_panels_pane(&$vars) {
  if ($vars['pane']->type != 'block') {
    return;
  }

  if (in_array('pane-ding-library-ding-sidebar-menu', $vars['classes_array'])) {
    $trail = menu_get_active_trail();
    $tree = menu_tree_page_data($trail[1]['menu_name']);
    $class = $trail[1]['menu_name'] . '-' . $trail[1]['mlid'];
    $vars['classes_array'][] = $class;
  }
}

include_once('ding_library.features.inc');