function persistent_login_form_after_build in Persistent Login 6

Same name and namespace in other branches

1. 7 persistent_login.pages.inc \persistent_login_form_after_build()

After_build callback for login forms.

1 call to persistent_login_form_after_build()

persistent_login_form_after_build_proxy in ./persistent_login.module

Proxy function to call persistent_login_form_after_build(), because it might not be included yet when the form is processed and invokes the callback.

File

./persistent_login.pages.inc, line 128

Implementation of Persistent Login forms.

Code

function persistent_login_form_after_build($form, &$form_state) {

  // Get a reference to the portion of the form we are interested in.
  if (isset($form['account']) && is_array($form['account'])) {
    $form_reference =& $form['account'];
  }
  else {
    $form_reference =& $form;
  }

  // If we don't have a submit button, then it's a sign someone else altered
  // the login form in a way that cannot be submitted, so we remove the
  // "Remember me" checkbox we added in hook_form_alter() and quit.
  if (!isset($form['submit'])) {
    unset($form_reference['persistent_login']);
    return $form;
  }

  // FAPI ensures a weight is assigned to all elements before after_build
  // callback is invoked.
  // Get the weight assigned to the password field.
  $original_pass_weight = $form_reference['pass']['#weight'];

  // Increase the weight of all elements with a weight greater to the one assigned
  // to the password field to make room for the "Remember me" checkbox.
  foreach (element_children($form_reference) as $key) {
    if (isset($form_reference[$key]) && $form_reference[$key]) {
      if ($form_reference[$key]['#weight'] > $original_pass_weight) {
        $form_reference[$key]['#weight'] += 1;
      }
    }
  }

  // Give the "Remember me" checkbox a weight based on the one assigned
  // to the password field so it renders just after that.
  $form_reference['persistent_login']['#weight'] = $original_pass_weight + 0.5;

  // Ensure drupal_render() performs the sort by weight step on the form.
  unset($form_reference['#sorted']);

  // Adjust the tabindex of the plain login form.
  if (isset($form['submit']['#attributes']) && isset($form['submit']['#attributes']['tabindex'])) {
    $tabindex = (int) $form['submit']['#attributes']['tabindex'];
    $form_reference['persistent_login']['#attributes']['tabindex'] = $tabindex;
    $form['submit']['#attributes']['tabindex'] = $tabindex + 1;
  }
  return $form;
}