template.php

<?php

/**
 * Implements hook_theme().
 */
function cambridge_theme_theme($existing, $type, $theme, $path) {
  return array(
    'cambridge_theme_unstyled_list' => array(
      'function' => 'cambridge_theme_unstyled_list',
      'render element' => 'tree',
    ),
    'cambridge_theme_horizontal_navigation' => array(
      'function' => 'cambridge_theme_horizontal_navigation',
      'render element' => 'tree',
    ),
    'cambridge_theme_local_dropdown_menu' => array(
      'function' => 'cambridge_theme_local_dropdown_menu',
      'render element' => 'tree',
    ),
    'cambridge_theme_left_navigation_structure' => array(
      'function' => 'cambridge_theme_left_navigation_structure',
      'render element' => 'element',
    ),
    'cambridge_theme_left_navigation_splitter' => array(
      'function' => 'cambridge_theme_left_navigation_splitter',
      'render element' => 'element',
    ),
    'cambridge_theme_left_navigation_breadcrumb' => array(
      'function' => 'cambridge_theme_left_navigation_breadcrumb',
      'render element' => 'element',
    ),
    'cambridge_theme_left_navigation_navigation' => array(
      'function' => 'cambridge_theme_left_navigation_navigation',
      'render element' => 'element',
    ),
    'cambridge_theme_left_navigation_children' => array(
      'function' => 'cambridge_theme_left_navigation_children',
      'render element' => 'element',
    ),
    'cambridge_theme_menu_link__left_navigation_breadcrumb' => array(
      'function' => 'cambridge_theme_menu_link__left_navigation_breadcrumb',
      'render element' => 'element',
    ),
    'cambridge_easy_breadcrumb' => array(
      'function' => 'theme_cambridge_easy_breadcrumb',
      'variables' => array(
        'breadcrumb' => NULL,
        'segments_quantity' => NULL,
        'separator' => NULL,
      ),
    ),
  );
}

/**
 * Implements template_preprocess_html().
 */
function cambridge_theme_preprocess_html(&$variables) {
  $variables['classes_array'][] = 'campl-theme-' . theme_get_setting('colour_scheme');

  if (FALSE === module_exists('touch_icons')) {
    drupal_add_html_head_link(
      array(
        'rel' => 'apple-touch-icon',
        'href' => file_create_url(drupal_get_path('theme', 'cambridge_theme') . '/apple-touch-icon.png'),
        'type' => 'image/png',
      )
    );
  }
}

/**
 * Implements theme_menu_local_tasks().
 */
function cambridge_theme_menu_local_tasks(&$variables) {
  if (empty($variables['primary']) && empty($variables['secondary'])) {
    return NULL;
  }

  $output = '<div class="campl-content-container campl-no-bottom-padding">';

  if (!empty($variables['primary'])) {
    $variables['primary']['#prefix'] = '<h2 class="element-invisible">' . t('Primary tabs') . '</h2>';
    $variables['primary']['#prefix'] .= '<ul class="campl-nav campl-nav-tabs campl-unstyled-list">';
    $variables['primary']['#suffix'] = '</ul>';
    $output .= drupal_render($variables['primary']);
  }
  if (!empty($variables['secondary'])) {
    $variables['secondary']['#prefix'] = '<h2 class="element-invisible">' . t('Secondary tabs') . '</h2>';
    $variables['secondary']['#prefix'] .= '<ul class="campl-nav campl-nav-tabs campl-unstyled-list">';
    $variables['secondary']['#suffix'] = '</ul>';
    $output .= drupal_render($variables['secondary']);
  }

  $output .= '</div>';

  return $output;
}

/**
 * Implements theme_table().
 */
function cambridge_theme_table($variables) {
  $variables['attributes']['class'][] = 'campl-table campl-table-bordered campl-table-striped campl-vertical-stacking-table';

  return theme_table($variables);
}

/**
 * Implements hook_js_alter().
 */
function cambridge_theme_js_alter(&$javascript) {
  // Use the jQuery version provided with the house style.
  $javascript['misc/jquery.js']['data'] = drupal_get_path('theme', 'cambridge_theme') . '/js/libs/jquery-min.js';
  $javascript['misc/jquery.js']['version'] = '1.7.1';
}

/**
 * Unstyled list theme wrapper.
 */
function cambridge_theme_unstyled_list($variables) {
  return '<ul class="campl-unstyled-list">' . $variables['tree']['#children'] . '</ul>';
}

/**
 * Horizontal navigation theme wrapper.
 */
function cambridge_theme_horizontal_navigation($variables) {
  return '<div class="campl-wrap clearfix campl-local-navigation"><div class="campl-local-navigation-container"><ul class="campl-unstyled-list">' . $variables['tree']['#children'] . '</ul></div></div>';
}

/**
 * Local dropdown menu theme wrapper.
 */
function cambridge_theme_local_dropdown_menu($variables) {
  return '<ul class="campl-unstyled-list local-dropdown-menu">' . $variables['tree']['#children'] . '</ul>';
}

/**
 * Left navigation menu block themer.
 */
function cambridge_theme_left_navigation_block($variables) {
  return $variables['tree']['#children'];
}

/**
 * Left navigation menu block link themer.
 */
function cambridge_theme_left_navigation_link($variables) {
  $element = $variables['element'];
  $sub_menu = '';
  if ($element['#below']) {
    $element['#attributes']['class'][] = 'campl-selected';
    $sub_menu = '<ul class="campl-unstyled-list campl-vertical-breadcrumb-children">' .
      drupal_render($element['#below']) . '</ul>';
  }
  $list_menu = '';

  if ($element['#title'] != t('Home')) {
    $output = l($element['#title'], $element['#href'], $element['#localized_options']);
    $list_menu = '<li' . drupal_attributes($element['#attributes']) . ' >' . $output . $sub_menu . "</li>\n";
  }

  return $list_menu;
}

/**
 * Implements template_preprocess_page().
 */
function cambridge_theme_preprocess_page(&$variables) {
  if (arg(0) == 'taxonomy' && arg(1) == 'term' && is_numeric(arg(2))) {
    // Taxonomy term listing page.
    if (FALSE === empty($variables['page']['content']['system_main']['term_heading']['term']['#term']->description)) {
      $variables['page']['content']['system_main']['term_heading']['#prefix'] = '<div class="campl-content-container campl-no-bottom-padding">' . $variables['page']['content']['system_main']['term_heading']['#prefix'];
      $variables['page']['content']['system_main']['term_heading']['#suffix'] .= '<hr></div>';
    }
    if (isset($variables['page']['content']['system_main']['no_content'])) {
      $variables['page']['content']['system_main']['no_content']['#prefix'] = '<div class="campl-content-container campl-no-top-padding">' . $variables['page']['content']['system_main']['no_content']['#prefix'];
      $variables['page']['content']['system_main']['no_content']['#suffix'] .= '</div>';
    }
  }
}

/**
 * Implements template_preprocess_block().
 */
function cambridge_theme_preprocess_block(&$variables) {
  if (
    $variables['block']->region === 'content'
    &&
    (
      // it's not normal content
      ($variables['block']->module !== 'system' || $variables['block']->delta !== 'main')
      ||
      // but it can be a form
      isset($variables['elements']['#form_id'])
      ||
      // or a user profile
      (isset($variables['elements']['#theme']) && $variables['elements']['#theme'] === 'user_profile')
      ||
      // or a default Drupal not found message
      (
        isset($variables['elements']['main']['#children'])
        &&
        $variables['elements']['main']['#children'] == t(
          'The requested page "@path" could not be found.',
          array('@path' => request_uri())
        )
      )
      ||
      // or a default Drupal access denied message
      (
        isset($variables['elements']['main']['#children'])
        &&
        $variables['elements']['main']['#children'] == t('You are not authorized to access this page.')
      )
      ||
      // or an empty front page
      isset($variables['elements']['default_message'])
    )
    &&
    // it's not a view block
    $variables['block']->module !== 'views'
  ) {
    $variables['classes_array'][] = 'campl-content-container';
  }
  elseif ($variables['block']->region === 'sidebar' && $variables['block']->module !== 'views') {
    $variables['content_attributes_array']['class'][] = 'campl-content-container';
  }
  elseif ($variables['block']->region === 'partnerships') {
    $variables['classes_array'][] = 'campl-content-container campl-logo-container campl-bottom-padding';
    $variables['title_attributes_array']['class'][] = 'campl-branding-title';
  }
  elseif (in_array($variables['block']->region, array('footer_1', 'footer_2', 'footer_3', 'footer_4'))) {
    $variables['classes_array'][] = 'campl-content-container campl-navigation-list';
    $variables['theme_hook_suggestions'][] = 'block__footer_x';
  }
}

/**
 * Implements hook_menu_block_tree_alter().
 */
function cambridge_theme_menu_block_tree_alter(&$tree, &$config) {
  $block = block_load('menu_block', $config['delta']);

  if ('left_navigation' === $block->region) {
    // Force menu block configuration.
    $config['level'] = 1;
    $config['follow'] = 0;
    $config['depth'] = 0;
    $config['expanded'] = 1;
    $config['sort'] = 1;
  }
  elseif ('horizontal_navigation' === $block->region) {
    // Force menu block configuration.
    $config['level'] = 1;
    $config['follow'] = 0;
    $config['depth'] = 0;
    $config['expanded'] = 1;
    $config['sort'] = 0;

    // We need to add in extra 'Overview' menu items as parents aren't clickable/tapable, but there isn't a way to do
    // this with arrays as it can have any number of levels. So they need to be turned into ArrayObjects and back again.
    // (Ugly, but...)

    require_once dirname(__FILE__) . '/includes/recursive_array_object.class.inc';

    $tree = new RecursiveArrayObject($tree);

    _cambridge_theme_add_horizontal_navigation_overview_items($tree);

    $tree = $tree->getArrayCopy();
  }
}

/**
 * Add in extra 'Overview' menu items as parents aren't clickable/tapable.
 */
function _cambridge_theme_add_horizontal_navigation_overview_items($items) {
  foreach ($items as $item) {
    if (0 === count($item['below'])) {
      continue;
    }

    _cambridge_theme_add_horizontal_navigation_overview_items($item['below']);

    if ('<firstchild>' !== $item['link']['link_path']) {
      $overview = array('link' => $item['link']->getArrayCopy(), 'below' => array());
      $overview['link']['title'] .= ' overview';

      $temp = $item['below']->getArrayCopy();
      $temp = array('overview' => $overview) + $temp;
      $item['below']->exchangeArray($temp);
    }
  }
}

/**
 * Implements theme_status_messages().
 */
function cambridge_theme_status_messages($variables) {
  $display = $variables['display'];
  $output = '';

  foreach (drupal_get_messages($display) as $type => $messages) {
    switch ($type) {
      case 'status':
        $type = 'success';
        $name = t('Success');
        break;
      case 'error':
        $type = 'warning';
        $name = t('Warning');
        break;
      case 'warning':
        $type = 'Alert';
        $name = t('Alert');
        break;
      default:
        $type = 'info';
        $name = t('Information');
    }

    foreach ($messages as $message) {
      $output .= '<div class="campl-notifications-panel campl-' . $type . '-panel campl-notifications-container clearfix">';

      $output .= '<div class="campl-column4">';
      $output .= '<p class="campl-notifications-icon campl-' . $type . '-icon">' . $name . ':</p>';
      $output .= '</div>';

      $output .= '<div class="campl-column8">';
      $output .= '<p>' . $message . "</p>";
      $output .= "</div>";

      $output .= "</div>";
    }
  }

  return $output;
}

/**
 * Implements theme_image().
 */
function cambridge_theme_image($variables) {
  // Make sure class is added to all images.
  $variables['attributes']['class'][] = 'campl-scale-with-grid';

  return theme_image($variables);
}

/**
 * Implements hook_block_view_alter().
 */
function cambridge_theme_block_view_alter(&$data, $block) {

  if (in_array($block->region, array('footer_1', 'footer_2', 'footer_3', 'footer_4'))) {
    // Add wrapper to blocks in the local footer column regions.
    if (array_key_exists('content', $data) && is_array($data['content'])) {
      if ($block->module === 'menu_block') {
        $data['content']['#content']['#theme_wrappers'] = array('cambridge_theme_unstyled_list');
      }
      else {
        $data['content']['#theme_wrappers'] = array('cambridge_theme_unstyled_list');
      }
    }
  }
  elseif ($block->module === 'menu_block' && $block->region === 'horizontal_navigation') {
    // Forcibly disable the block title.
    $data['subject'] = NULL;
    $block->title = NULL;

    // Add wrappers to the horizontal navigation regions.

    $data['content']['#content']['#theme_wrappers'] = array('cambridge_theme_horizontal_navigation');
    foreach ($data['content']['#content'] as $id => $item) {
      if (isset($data['content']['#content'][$id]['#below']) && count($data['content']['#content'][$id]['#below'])) {
        $data['content']['#content'][$id]['#below']['#theme_wrappers'] = array('cambridge_theme_local_dropdown_menu');
        foreach ($data['content']['#content'][$id]['#below'] as $belowId => $below) {
          if ('#' === substr($belowId, 0, 1)) {
            continue;
          }
          if (count($data['content']['#content'][$id]['#below'][$belowId]['#below'])) {
            $data['content']['#content'][$id]['#below'][$belowId]['#below']['#theme_wrappers'] = array('cambridge_theme_local_dropdown_menu');
          }
        }
      }
    }

    // We need to add the campl-current-page class to the current page, but there isn't a way to do this with arrays as
    // it can have any number of levels. So they need to be turned into ArrayObjects and back again. (Ugly, but...)

    require_once dirname(__FILE__) . '/includes/recursive_array_object.class.inc';

    $object = new RecursiveArrayObject($data['content']['#content']);

    _cambridge_theme_find_active_horizontal_navigation($object);

    $data['content']['#content'] = $object->getArrayCopy();

    foreach ($data['content']['#content'] as $key => $item) {
      if (FALSE === is_int($key)) {
        continue;
      }
      if (in_array('active-trail', $item['#attributes']['class'])) {
        $data['content']['#content'][$key]['#localized_options']['attributes']['class'][] = 'campl-selected';
      }
    }
  }
  elseif ($block->module === 'menu_block' && $block->region === 'left_navigation') {
    if (FALSE === isset($data['content']['#content'])) {
      return;
    }

    // Forcibly disable the block title.
    $data['subject'] = NULL;
    $block->title = NULL;

    $content = $data['content']['#content'];

    $active = NULL;

    require_once dirname(__FILE__) . '/includes/recursive_array_object.class.inc';

    foreach ($content as $key => $item) {
      if (FALSE === is_int($key)) {
        continue;
      }

      if (TRUE === in_array('active', $item['#attributes']['class'])) {
        $active = new RecursiveArrayObject($content[$key]);
      }
    }

    if (NULL === $active) {
      foreach ($content as $key => $item) {
        if (FALSE === is_int($key)) {
          continue;
        }

        if (TRUE === in_array('active-trail', $item['#attributes']['class'])) {
          $active = new RecursiveArrayObject($content[$key]);

          // Sometimes the menu has an active-trail without an active item (eg Feeds module's log pages. Cycle through
          // the items to make sure we have one. Not ideal, but the menu would break otherwise.

          if (FALSE === _cambridge_theme_left_navigation_has_active_item($active)) {
            // If we don't have an active item, don't try and change the menu.
            $active = NULL;
          }

          break;
        }
      }
    }

    $breadcrumbs = array();

    if (NULL === $active) {
      // No active part, so just display the menu at the top level.
      $navigation = array();
      $siblings = $content;

      foreach ($siblings as $key => $sibling) {
        if (FALSE === is_int($key)) {
          continue;
        }
        if ($sibling['#title'] == 'Home') {
          $title = variable_get('site_name');

          if (module_exists('context')) {
            foreach (context_active_contexts() as $context) {
              if (!empty($context->reactions['theme']['title'])) {
                $title = $context->reactions['theme']['title'];
              }
            }
          }

          $breadcrumbs = array($key => $siblings[$key]) + $breadcrumbs;
          $breadcrumbs[$key]['#title'] = $title;
        }
      }

      // If there isn't a breadcrumb already (ie the top level doesn't have a 'Home' menu item), make one that points to
      // the front page.

      if (count($breadcrumbs) === 0) {
        $breadcrumbs['foo'] = array(
          '#theme' => array('menu_link'),
          '#title' => variable_get('site_name'),
          '#href' => '<front>',
          '#attributes' => array(),
        );
      }
    }
    else {
      $active['_siblings'] = new RecursiveArrayObject($content);

      $navigation = array();

      // See if the top level has a 'Home' menu item, and make it the first breadcrumb level if found.

      foreach ($active['_siblings'] as $key => $sibling) {
        if (FALSE === is_int($key)) {
          continue;
        }
        if ($sibling['#title'] == 'Home') {
          $title = variable_get('site_name');

          // Use the context module's section title if enabled/used.

          if (module_exists('context')) {
            foreach (context_active_contexts() as $context) {
              if (!empty($context->reactions['theme']['title'])) {
                $title = $context->reactions['theme']['title'];
              }
            }
          }

          $breadcrumbs = array($key => $active['_siblings'][$key]->getArrayCopy()) + $breadcrumbs;
          $breadcrumbs[$key]['#title'] = $title;
        }
      }

      // If there isn't a breadcrumb already (ie the top level doesn't have a 'Home' menu item), make one that points to
      // the front page.

      if (count($breadcrumbs) === 0) {
        $breadcrumbs['foo'] = array(
          '#theme' => array('menu_link'),
          '#title' => variable_get('site_name'),
          '#href' => '<front>',
          '#attributes' => array(),
        );
      }

      // Break up the menu into the breadcrumb and navigation sections.

      _cambridge_theme_left_navigation_break_up($active, $breadcrumbs, $navigation);

      // Add in overview-style links when necessary.

      $key = key($navigation);

      if (count($navigation[$key]['#below']) > 0) {
        if ('<firstchild>' !== $navigation[$key]['#original_link']['link_path']) {
          $navigation[$key]['#below'] = $navigation + $navigation[$key]['#below'];
          $navigation[$key]['#below'][$key]['#title'] .= ' overview';
        }

        $navigation[$key]['#attributes']['class'][] = 'campl-selected';
        $navigation[$key]['#href'] = '<none>';
      }

      // We don't want to display grandchildren.

      foreach ($navigation[$key]['#below'] as $childKey => $child) {
        if (FALSE === is_int($childKey)) {
          continue;
        }
        $navigation[$key]['#below'][$childKey]['#below'] = array();

        if (in_array('active', $child['#attributes']['class'])) {
          $navigation[$key]['#below'][$childKey]['#attributes']['class'][] = 'campl-selected';
        }
      }

      // Pick out siblings.

      $siblings = $navigation[$key]['_siblings'];
      unset($siblings[$key]);

      if ($navigation[$key]['#title'] == 'Home') {
        $navigation = array();
      }
    }

    foreach ($siblings as $key => $sibling) {
      if (FALSE === is_int($key)) {
        continue;
      }

      // We don't want to display children of the siblings.

      $siblings[$key]['#below'] = array();

      if ($sibling['#title'] == 'Home') {
        unset($siblings[$key]);
      }
    }

    // Construct the two menu parts.

    $data['content']['#content'] = array();
    $data['content']['#content']['#theme'] = array('cambridge_theme_left_navigation_structure');
    $data['content']['#content']['#below']['breadcrumb']['#below'] = $breadcrumbs;
    $data['content']['#content']['#below']['breadcrumb']['#below']['#theme_wrappers'] = array('cambridge_theme_left_navigation_breadcrumb');
    $data['content']['#content']['#below']['breadcrumb']['#theme'] = array('cambridge_theme_left_navigation_splitter');
    $data['content']['#content']['#below']['breadcrumb']['#href'] = '<front>';
    $data['content']['#content']['#below']['breadcrumb']['#localized_options'] = array();
    $data['content']['#content']['#below']['breadcrumb']['#attributes'] = array();
    $data['content']['#content']['#below']['breadcrumb']['#bid'] = array('module' => 'menu_block', 'delta' => 2);
    foreach ($data['content']['#content']['#below']['breadcrumb']['#below'] as $key => $value) {
      if (FALSE === isset($data['content']['#content']['#below']['breadcrumb']['#below'][$key]['#theme'])) {
        continue;
      }
      array_unshift(
        $data['content']['#content']['#below']['breadcrumb']['#below'][$key]['#theme'],
        'menu_link__left_navigation_breadcrumb'
      );
    }
    $data['content']['#content']['#below']['navigation']['#below'] = array_merge($navigation, $siblings);
    $data['content']['#content']['#below']['navigation']['#below']['#theme_wrappers'] = array('cambridge_theme_left_navigation_navigation');
    $data['content']['#content']['#below']['navigation']['#theme'] = array('cambridge_theme_left_navigation_splitter');
    $data['content']['#content']['#below']['navigation']['#href'] = '<front>';
    $data['content']['#content']['#below']['navigation']['#localized_options'] = array();
    $data['content']['#content']['#below']['navigation']['#attributes'] = array();
    $data['content']['#content']['#below']['navigation']['#bid'] = array('module' => 'menu_block', 'delta' => 2);
    foreach ($data['content']['#content']['#below']['navigation']['#below'] as $key => $value) {
      if (FALSE === isset($data['content']['#content']['#below']['navigation']['#below'][$key]['#below']['#theme_wrappers'])) {
        continue;
      }
      $data['content']['#content']['#below']['navigation']['#below'][$key]['#below']['#theme_wrappers'] = array(array('cambridge_theme_left_navigation_children'));
    }
  }
}

/**
 * Add the campl-current-page class to the current page.
 */
function _cambridge_theme_find_active_horizontal_navigation($objects) {
  foreach ($objects as $key => $object) {
    if ('#' === substr($key, 0, 1)) {
      continue;
    }

    if (in_array('active', (array) $object['#attributes']['class'])) {
      $object['#attributes']['class'][] = 'campl-current-page';

      return TRUE;
    }

    if ((is_array($object['#below']) || $object['#below'] instanceof Countable) && count($object['#below'])) {
      if (TRUE === _cambridge_theme_find_active_horizontal_navigation($object['#below'])) {
        return TRUE;
      }
    }
  }

  return FALSE;
}

/**
 * Test whether the menu has an active item.
 */
function _cambridge_theme_left_navigation_has_active_item($item) {
  if (in_array('active', $item['#attributes']['class']->getArrayCopy())) {
    return TRUE;
  }

  foreach ($item['#below'] as $key => $child) {
    if (FALSE === is_int($key)) {
      continue;
    }

    if (TRUE === _cambridge_theme_left_navigation_has_active_item($child)) {
      return TRUE;
    }
  }

  return FALSE;
}

/**
 * Break up the left-hand navigation into the breadcrumb and navigation sections.
 */
function _cambridge_theme_left_navigation_break_up($item, &$breadcrumbs, &$navigation) {
  if (FALSE === $item instanceof RecursiveArrayObject) {
    return;
  }

  if (
    FALSE === in_array('active-trail', $item['#attributes']['class']->getArrayCopy())
    &&
    FALSE === in_array('active', $item['#attributes']['class']->getArrayCopy())
  ) {
    return;
  }

  $child_is_active = FALSE;

  foreach ($item['#below'] as $key => $child) {
    if (FALSE === is_int($key)) {
      continue;
    }

    $child['_siblings'] = $item['#below']->getArrayCopy();

    if (TRUE === in_array('active', $child['#attributes']['class']->getArrayCopy())) {
      $child_is_active = count($child['#below']) === 0;
      break;
    }
  }

  if (
    $child_is_active
    ||
    (
      in_array('active', $item['#attributes']['class']->getArrayCopy())
      &&
      $item['#original_link']['link_path'] !== '<firstchild>'
    )
  ) {
    $navigation[$item['#original_link']['mlid']] = $item->getArrayCopy();

    return;
  }

  $breadcrumbs[$item['#original_link']['mlid']] = $item->getArrayCopy();
  $breadcrumbs[$item['#original_link']['mlid']]['#below'] = array();

  foreach ($item['#below'] as $key => $child) {
    if (FALSE === is_int($key)) {
      continue;
    }

    _cambridge_theme_left_navigation_break_up($child, $breadcrumbs, $navigation);
  }
}

/**
 * Wrap the left navigation structure.
 */
function cambridge_theme_left_navigation_structure($variables) {
  $output = drupal_render($variables['element']['#below']);

  return '<div class="campl-tertiary-navigation-structure">' . $output . '</div>';
}

/**
 * Wrap the left navigation parts.
 */
function cambridge_theme_left_navigation_splitter($variables) {
  return drupal_render($variables['element']['#below']);
}

/**
 * Wrap the left navigation breadcrumb.
 */
function cambridge_theme_left_navigation_breadcrumb($variables) {
  return '<ul class="campl-unstyled-list campl-vertical-breadcrumb">' . $variables['element']['#children'] . '</ul>';
}

/**
 * Implements theme_menu_link__left_navigation_breadcrumb().
 */
function cambridge_theme_menu_link__left_navigation_breadcrumb(array $variables) {
  $element = $variables['element'];

  $element['#localized_options']['html'] = TRUE;

  $output = l(
    $element['#title'] . '<span class="campl-vertical-breadcrumb-indicator"></span>',
    $element['#href'],
    $element['#localized_options']
  );

  return '<li' . drupal_attributes($element['#attributes']) . '>' . $output . '</li>';
}

/**
 * Wrap the left navigation navigation.
 */
function cambridge_theme_left_navigation_navigation($variables) {
  return '<ul class="campl-unstyled-list campl-vertical-breadcrumb-navigation">' . $variables['element']['#children'] . '</ul>';
}

/**
 * Wrap the left navigation navigation children.
 */
function cambridge_theme_left_navigation_children($variables) {
  return '<ul class="campl-unstyled-list campl-vertical-breadcrumb-children">' . $variables['element']['#children'] . '</ul>';
}

/**
 * Implements theme_menu_link().
 */
function cambridge_theme_menu_link(array $variables) {
  $element = $variables['element'];
  $sub_menu = '';

  if ($element['#below']) {
    $sub_menu = drupal_render($element['#below']);
  }

  if ($element['#href'] === '<none>') {
    $output = $element['#title'];
  }
  else {
    $output = l($element['#title'], $element['#href'], $element['#localized_options']);
  }

  return '<li' . drupal_attributes($element['#attributes']) . '>' . $output . $sub_menu . "</li>\n";
}

/**
 * Implements hook_preprocess_views_view_table().
 */
function cambridge_theme_preprocess_views_view_table(&$vars) {
  $vars['classes_array'][] = 'campl-table campl-table-bordered campl-table-striped campl-vertical-stacking-table';
}

/**
 * Implements hook_menu_breadcrumb_alter().
 */
function cambridge_theme_menu_breadcrumb_alter(&$active_trail, $item) {
  if (isset($active_trail[0])) {
    $active_trail[0]['localized_options']['attributes']['class'][] = 'campl-home ir';
  }
}

/**
 * Implements template_breadcrumb().
 */
function cambridge_theme_breadcrumb($breadcrumbs) {
  if (count($breadcrumbs['breadcrumb']) <= 1) {
    return '';
  }

  $html = '<div class="campl-breadcrumb" id="breadcrumb">';
  $html .= '<ul class="campl-unstyled-list campl-horizontal-navigation clearfix">';
  foreach ($breadcrumbs['breadcrumb'] as $i => $breadcrumb) {
    if ($i == 0) {
      $html .= '<li class="first-child">';
    }
    else {
      $html .= '<li>';
    }
    $html .= $breadcrumb . '</li>';
  }
  $html .= '</ul>';
  $html .= '</div>';

  return $html;
}

/**
 * Implements hook_block_view_MODULE_DELTA_alter() for the Easy Breadcrumb module's Easy Breadcrumb block.
 */
function cambridge_theme_block_view_easy_breadcrumb_easy_breadcrumb_alter(&$data, $block) {
  $data['content']['easy_breadcrumb']['#theme'] = 'cambridge_easy_breadcrumb';
}

/**
 * Style the Easy Breadcrumb module's Easy Breadcrumb block.
 */
function theme_cambridge_easy_breadcrumb($variables) {
  $breadcrumbs = $variables['breadcrumb'];
  $segments_quantity = $variables['segments_quantity'];

  if (count($breadcrumbs) <= 1) {
    return '';
  }

  $html = '';

  if ($segments_quantity > 0) {
    $html .= '<div class="campl-breadcrumb" id="breadcrumb">';
    $html .= '<ul class="campl-unstyled-list campl-horizontal-navigation clearfix">';

    foreach ($breadcrumbs as $i => $breadcrumb) {
      if (isset($breadcrumb['url'])) {
        $content = $breadcrumb['content'];
        $class = $breadcrumb['class'];
        $url = $breadcrumb['url'];
        if (in_array('easy-breadcrumb_segment-front', $class)) {
          $class[] = 'campl-home ir';
        }
        if ($i == 0) {
          $html .= '<li class="first-child">';
        }
        else {
          $html .= '<li>';
        }
        $html .= l($content, $url, array('attributes' => array('class' => $class))) . '</li>';
      }
      else {
        $content = html_entity_decode($breadcrumb['content']);
        $class = implode(' ', $breadcrumb['class']);
        $html .= '<li class="' . $class . '">' . $content . '</li>';
      }
    }
    $html .= '</ul>';
    $html .= '</div>';
  }

  return $html;
}