public function date_ical_plugin_style_ical_feed::attach_to in Date iCal 7.3

Same name and namespace in other branches

1. 7 date_ical_plugin_style_ical_feed.inc \date_ical_plugin_style_ical_feed::attach_to()
2. 7.2 includes/date_ical_plugin_style_ical_feed.inc \date_ical_plugin_style_ical_feed::attach_to()

Sets up the iCal feed icon on calendar pages.

File

includes/date_ical_plugin_style_ical_feed.inc, line 22

Views style plugin for the Date iCal module.

Class

date_ical_plugin_style_ical_feed

Defines a Views style plugin that renders iCal feeds.

Code

public function attach_to($display_id, $path, $title) {
  $url_options = array();
  $input = $this->view
    ->get_exposed_input();
  if ($input) {
    $url_options['query'] = $input;
  }
  $url_options['absolute'] = TRUE;

  // Only add arguments to ical path for the contextual filters in the feed display.
  // Clone view to prevent affecting the page view where this is attached.
  $clone = $this->view
    ->clone_view();
  $clone
    ->set_display($this->display->id);
  $contextual_filters = $clone
    ->get_items('argument');
  $arg_number = count($contextual_filters);

  // Only include as many arguments as the feed display supports.
  foreach ($clone->args as $key => $arg) {
    if ($key >= $arg_number) {
      unset($clone->args[$key]);
    }
  }
  $url = url($clone
    ->get_url(NULL, $path), $url_options);

  // If the user didn't disable the option, change the scheme to webcal://
  // so calendar clients can automatically subscribe via the iCal link.
  if (!$this
    ->_get_option('disable_webcal')) {
    $url = str_replace(array(
      'http://',
      'https://',
    ), 'webcal://', $url);
  }

  // Render the feed icon and header tag (except during a View Preview and
  // if the display is disabled).
  if (empty($this->view->live_preview) && (!isset($this->display->display_options['enabled']) || $this->display->display_options['enabled'])) {
    $tooltip = t('Add to My Calendar');
    if (!isset($this->view->feed_icon)) {

      // In PHP 5.5, you're not allowed to concatinate onto an unset
      // property. But we need to do a concat, because there may be
      // other attachments.
      $this->view->feed_icon = '';
    }
    $variables = array(
      'url' => check_url($url),
      'tooltip' => $tooltip,
      'view' => $this->view,
    );
    $this->view->feed_icon .= theme('date_ical_icon', $variables);
    drupal_add_html_head_link(array(
      'rel' => 'alternate',
      'type' => 'text/calendar',
      'title' => $tooltip,
      'href' => $url,
    ));
  }
}