function link_widget in Link 5

Same name and namespace in other branches

1. 6.2 link.module \link_widget()
2. 6 link.module \link_widget()

Implementation of hook_widget().

File

./link.module, line 258

Defines simple link field types.

Code

function link_widget($op, &$node, $field, &$items) {
  switch ($op) {
    case 'prepare form values':
      foreach ($items as $delta => $value) {
        if (is_numeric($delta)) {
          _link_widget_prepare($items[$delta], $delta);
        }
      }
      if ($_POST[$field['field_name']]) {
        $items = $_POST[$field['field_name']];
        unset($items['count'], $items['more-url'], $items['more']);
      }
      return;
    case 'form':
      $form = array();
      $form[$field['field_name']] = array(
        '#tree' => TRUE,
        '#theme' => 'link_widget_form',
        '#type' => $field['multiple'] ? 'fieldset' : 'markup',
        '#collapsible' => TRUE,
        '#collapsed' => FALSE,
        '#title' => t($field['widget']['label']),
        '#description' => $field['widget']['description'],
      );

      // Add token module replacements if available.
      if (module_exists('token') && $field['enable_tokens']) {
        $tokens_form = array(
          '#type' => 'fieldset',
          '#collapsible' => TRUE,
          '#collapsed' => TRUE,
          '#title' => t('Placeholder tokens'),
          '#description' => t("The following placeholder tokens can be used in both titles and URLs. When used in a URL or title, they will be replaced with the appropriate values."),
          '#weight' => 2,
        );
        $tokens_form['help'] = array(
          '#value' => theme('token_help', 'node'),
        );
      }
      if ($field['multiple']) {
        drupal_add_js(drupal_get_path('module', 'link') . '/link.js');
        $delta = 0;

        // Render link fields for all the entered values.
        foreach ($items as $data) {
          if (is_array($data) && ($data['url'] || $data['title'])) {
            _link_widget_form($form[$field['field_name']][$delta], $field, $data, $delta);
            $delta++;
          }
        }

        // Render two additional new link fields.
        foreach (range($delta, $delta + 1) as $delta) {
          _link_widget_form($form[$field['field_name']][$delta], $field, array(), $delta);
        }

        // Create a wrapper for additional fields.
        $form[$field['field_name']]['wrapper'] = array(
          '#type' => 'markup',
          '#value' => '<div id="' . str_replace('_', '-', $field['field_name']) . '-wrapper" class="clear-block"></div>',
        );

        // Add 'More' Javascript Callback.
        $form[$field['field_name']]['more-url'] = array(
          '#type' => 'hidden',
          '#value' => url('link/widget/js/' . $field['type_name'] . '/' . $field['field_name'], NULL, NULL, TRUE),
          '#attributes' => array(
            'class' => 'more-links',
          ),
          '#id' => str_replace('_', '-', $field['field_name']) . '-more-url',
        );

        // Add Current Field Count.
        $form[$field['field_name']]['count'] = array(
          '#type' => 'hidden',
          '#value' => $delta,
          '#id' => str_replace('_', '-', $field['field_name']) . '-count',
        );

        // Add More Button.
        $form[$field['field_name']]['more'] = array(
          '#type' => 'button',
          '#value' => t('More Links'),
          '#name' => 'more',
          '#id' => str_replace('_', '-', $field['field_name']) . '-more',
          '#weight' => 1,
        );
        if (isset($tokens_form)) {
          $form[$field['field_name']]['tokens'] = $tokens_form;
        }
      }
      else {
        _link_widget_form($form[$field['field_name']][0], $field, $items[0]);
        if (isset($tokens_form)) {
          $form[$field['field_name']][0]['tokens'] = $tokens_form;
        }
      }
      return $form;
    case 'validate':
      if (!is_object($node)) {
        return;
      }
      unset($items['count']);
      unset($items['more-url']);
      unset($items['more']);
      $optional_field_found = FALSE;
      foreach ($items as $delta => $value) {
        _link_widget_validate($items[$delta], $delta, $field, $node, $optional_field_found);
      }
      if ($field['url'] == 'optional' && $field['title'] == 'optional' && $field['required'] && !$optional_field_found) {
        form_set_error($field['field_name'] . '][0][title', t('At least one title or URL must be entered.'));
      }
      return;
    case 'process form values':

      // Remove the JS helper fields.
      unset($items['more-url']);
      unset($items['count']);
      unset($items['more']);
      foreach ($items as $delta => $value) {
        if (is_numeric($delta)) {
          _link_widget_process($items[$delta], $delta, $field, $node);
        }
      }
      return;
    case 'submit':

      // Don't save empty fields (beyond the first one).
      $save_field = array();
      unset($items['more-url']);
      unset($items['count']);
      unset($items['more']);
      foreach ($items as $delta => $value) {
        if ($value['url'] !== 'optional' || $delta == 0) {
          $save_items[] = $items[$delta];
        }
      }
      $items = $save_items;
      return;
  }
}