function taxonomy_container_field_widget_form in Taxonomy container 7

Implements hook_field_widget_form().

File

./taxonomy_container.module, line 58

Allows users to organize containers using taxonomy terms.

Code

function taxonomy_container_field_widget_form(&$form, &$form_state, $field, $instance, $langcode, $items, $delta, $element) {
  global $language;

  // Abstract over the actual field columns, to allow different field types to
  // reuse those widgets.
  $value_key = key($field['columns']);
  $multiple = $field['cardinality'] > 1 || $field['cardinality'] == FIELD_CARDINALITY_UNLIMITED;
  $properties = _options_properties('select', $multiple, $element['#required'], isset($items[0][$value_key]));
  $options = array();
  $prefix = isset($instance['widget']['settings']['prefix']) ? $instance['widget']['settings']['prefix'] : '-';

  // Compile the tree of options.
  foreach ($field['settings']['allowed_values'] as $tree) {
    if ($vocabulary = taxonomy_vocabulary_machine_name_load($tree['vocabulary'])) {
      $tree = taxonomy_get_tree($vocabulary->vid, $tree['parent']);
      foreach ($tree as $key => $term) {

        // Translate term name.
        if (module_exists('i18n_taxonomy')) {
          $term->name = i18n_taxonomy_term_name($term, $language->language);
        }
        if ($term->parents[0] == 0) {
          $parent_name = $term->name;

          // Allow parents without children to be selected.
          if (!isset($tree[$key + 1]) || $tree[$key + 1]->parents[0] == 0) {
            $options[$term->tid] = str_repeat('-', $term->depth) . $term->name;
          }
        }
        else {
          $options[$parent_name][$term->tid] = ltrim(str_repeat($prefix, $term->depth) . ' ' . $term->name);
        }
      }
    }
  }

  // Add empty option.
  if ($properties['empty_option']) {
    $instance['widget']['type'] = 'options_select';
    $label = theme('options_none', array(
      'instance' => $instance,
      'option' => $properties['empty_option'],
    ));
    $options = array(
      '_none' => $label,
    ) + $options;
  }

  // Sanitize the options.
  _options_prepare_options($options, $properties);

  // Put current field values in shape.
  $default_value = _options_storage_to_form($items, $options, $value_key, $properties);
  $element += array(
    '#type' => 'select',
    '#default_value' => $default_value,
    // Do not display a 'multiple' select box if there is only one option.
    '#multiple' => $multiple && count($options) > 1,
    '#options' => $options,
    '#value_key' => $value_key,
    '#element_validate' => array(
      'options_field_widget_validate',
    ),
    '#properties' => $properties,
  );
  if ($multiple && !empty($instance['widget']['settings']['multiple_select_size'])) {
    $element['#size'] = $instance['widget']['settings']['multiple_select_size'];
  }
  return $element;
}