function link_field_process

Processes the link type element before displaying the field.

Build the form element. When creating a form using FAPI #process, note that $element['#value'] is already set.

The $fields array is in $complete_form['#field_info'][$element['#field_name']].

File

core/modules/link/link.module, line 851

Defines simple link field types.

Code

function link_field_process($element, $form_state, $complete_form) {
  $instance = field_widget_instance($element, $form_state);
  $settings = $instance['settings'];

  $element['#attached']['css'][] = backdrop_get_path('module', 'link') . '/css/link.css';

  $element['url'] = array(
    '#type' => 'textfield',
    '#maxlength' => LINK_URL_MAX_LENGTH,
    '#title' => t('URL'),
    '#required' => ($element['#delta'] == 0 && $settings['url'] !== 'optional') ? $element['#required'] : FALSE,
    '#default_value' => isset($element['#value']['url']) ? $element['#value']['url'] : NULL,
  );
  if ($settings['type'] != LINK_EXTERNAL) {
    $element['url']['#autocomplete_path'] = 'path-autocomplete';
  }
  if ($settings['title'] !== 'none' && $settings['title'] !== 'value') {
    // Figure out the label of the title field.
    if (!empty($settings['title_label_use_field_label'])) {
      // Use the element label as the title field label.
      $title_label = $element['#title'];
      // Hide the field label because there is no need for the duplicate labels.
      $element['#title_display'] = 'invisible';
    }
    else {
      $title_label = t('Title');
    }

    $element['title'] = array(
      '#type' => 'textfield',
      '#maxlength' => $settings['title_maxlength'],
      '#title' => $title_label,
      '#required' => ($settings['title'] == 'required' && (($element['#delta'] == 0 && $element['#required']) || !empty($element['#value']['url']))) ? TRUE : FALSE,
      '#default_value' => isset($element['#value']['title']) ? $element['#value']['title'] : NULL,
    );
  }

  // Initialize field attributes as an array if it is not an array yet.
  if (!is_array($settings['attributes'])) {
    $settings['attributes'] = array();
  }
  // Add default attributes.
  $settings['attributes'] += _link_default_attributes();
  $attributes = isset($element['#value']['attributes']) ? $element['#value']['attributes'] : $settings['attributes'];
  if (!empty($settings['attributes']['target']) && $settings['attributes']['target'] == LINK_TARGET_USER) {
    $element['attributes']['target'] = array(
      '#type' => 'checkbox',
      '#title' => t('Open URL in a New Window'),
      '#return_value' => LINK_TARGET_NEW_WINDOW,
      '#default_value' => isset($attributes['target']) ? $attributes['target'] : FALSE,
    );
  }
  if (!empty($settings['attributes']['configurable_title']) && $settings['attributes']['configurable_title'] == 1) {
    $element['attributes']['title'] = array(
      '#type' => 'textfield',
      '#title' => t('Link "title" attribute'),
      '#default_value' => isset($attributes['title']) ? $attributes['title'] : '',
      '#field_prefix' => 'title = "',
      '#field_suffix' => '"',
    );
  }
  if (!empty($settings['attributes']['configurable_class']) && $settings['attributes']['configurable_class'] == 1) {
    $element['attributes']['class'] = array(
      '#type' => 'textfield',
      '#title' => t('Custom link class'),
      '#default_value' => isset($attributes['class']) ? $attributes['class'] : '',
      '#field_prefix' => 'class = "',
      '#field_suffix' => '"',
    );
  }

  // If the title field is available or there are field accepts multiple values
  // then allow the individual field items display the required asterisk if needed.
  if (isset($element['title']) || isset($element['_weight'])) {
    // To prevent an extra required indicator, disable the required flag on the
    // base element since all the sub-fields are already required if desired.
    $element['#required'] = FALSE;
  }

  return $element;
}