function panels_breadcrumbs_ctools_render_alter in Panels Breadcrumbs 7

Same name and namespace in other branches

1. 7.2 panels_breadcrumbs.module \panels_breadcrumbs_ctools_render_alter()

Implements hook_ctools_render_alter().

When a Page Manager page is rendered, set the breadcrumb

File

./panels_breadcrumbs.module, line 117

Main file for panels breadcrumbs module.

Code

function panels_breadcrumbs_ctools_render_alter($info, $page, $context) {
  $conf = $context['handler']->conf;

  // If panels_breadcrumbs isn't enabled for this display, bail out.
  if (!isset($conf['panels_breadcrumbs_state']) || !$conf['panels_breadcrumbs_state']) {
    return;
  }

  // If no titles or paths are defined, also bail out.
  if (!isset($conf['panels_breadcrumbs_titles']) || !isset($conf['panels_breadcrumbs_paths'])) {
    return;
  }
  $display_context = $context['handler']->conf['display']->context;

  // Look for placeholder tokens in titles and paths and convert them for this display
  $titles = ctools_context_keyword_substitute($conf['panels_breadcrumbs_titles'], array(), $display_context);
  $paths = ctools_context_keyword_substitute($conf['panels_breadcrumbs_paths'], array(), $display_context);

  // Break titles and paths into arrays and remove empty keys
  $titles = array_filter(array_map('trim', explode(PHP_EOL, $titles)), 'strlen');
  $paths = array_filter(array_map('trim', explode(PHP_EOL, $paths)), 'strlen');
  $default_breadcrumb_info = array(
    'title' => '',
    'href' => '',
    'localized_options' => array(),
  );
  $breadcrumbs_info = array();

  // Set the first crumb to home
  if (!isset($conf['panels_breadcrumbs_home']) || $conf['panels_breadcrumbs_home'] == TRUE) {
    $breadcrumbs_info[] = array(
      'title' => t('Home'),
      'href' => '<front>',
    ) + $default_breadcrumb_info;
  }

  // Iterate through all crumbs and add them to the breadcrumb
  foreach ($titles as $key => $title) {
    $title = html_entity_decode(trim($title), ENT_QUOTES);
    $path = empty($paths[$key]) ? '<none>' : trim($paths[$key]);
    $breadcrumbs_info[] = array(
      'title' => t($title),
      'href' => $path,
    ) + $default_breadcrumb_info;
  }

  // Allow other modules to intercept and operate changes in the breadcrumb
  $breadcrumb_info_end = end($breadcrumbs_info);
  drupal_alter('menu_breadcrumb', $breadcrumbs_info, $breadcrumb_info_end);

  // Finally, render the breadcrumb
  $breadcrumbs = array();
  foreach ($breadcrumbs_info as $crumb) {
    if (isset($crumb['href']) && $crumb['href'] == '<none>') {
      $crumb['localized_options'] += array(
        'attributes' => array(),
        'html' => TRUE,
      );
      $breadcrumbs[] = '<span ' . drupal_attributes($crumb['localized_options']['attributes']) . '>' . ($crumb['localized_options']['html'] ? $crumb['title'] : check_plain($crumb['title'])) . '</span>';
    }
    else {
      $breadcrumbs[] = l($crumb['title'], $crumb['href'], $crumb['localized_options']);
    }
  }
  drupal_set_breadcrumb($breadcrumbs);
}