/**
* Preprocess input.
*/
function bootstrap_preprocess_input(&$variables)
{
$element =& $variables['element'];
$attributes = new Attribute($variables['attributes']);
// Set the element's attributes.
\Drupal\Core\Render\Element::setAttributes($element, array('id', 'name', 'value', 'type'));
// Handle button inputs.
if (_bootstrap_is_button($element)) {
$variables['attributes']['class'][] = 'btn';
_bootstrap_colorize_button($variables);
_bootstrap_iconize_button($element);
// Add button size, if necessary.
if ($size = bootstrap_setting('button_size')) {
$variables['attributes']['class'][] = $size;
}
// Add in the button type class.
$variables['attributes']['class'][] = 'form-' . $element['#type'];
$variables['label'] = $element['#value'];
}
_bootstrap_prerender_input($variables);
// Autocomplete fields.
if (!empty($element['#autocomplete_route_name']) && Drupal::PathValidator($element['#autocomplete_route_name'])) {
$variables['autocomplete'] = TRUE;
// Attributes for hidden input field.
$autocomplete_attributes = new Attribute();
$autocomplete_attributes['type'] = 'hidden';
$autocomplete_attributes['id'] = $element['#attributes']['id'] . '-autocomplete';
$autocomplete_attributes['value'] = Drupal::Url($element['#autocomplete_route_name'], $element['#autocomplete_route_parameters']);
$autocomplete_attributes['disabled'] = 'disabled';
$autocomplete_attributes['class'] = 'autocomplete';
// Uses icon for autocomplete "throbber".
$icon = _bootstrap_icon('refresh');
// Fallback to using core's throbber.
if (empty($icon)) {
$icon = array('#type' => 'container', '#attributes' => array('class' => array('ajax-progress', 'ajax-progress-throbber', 'invisible')), 'throbber' => array('#type' => 'html_tag', '#tag' => 'div', '#attributes' => array('class' => array('throbber'))));
}
$variables['autocomplete_icon'] = $icon;
$variables['autocomplete_attributes'] = $autocomplete_attributes;
}
// Search fields.
if ($element['#type'] == 'search') {
$attributes['placeholder'] = t('Search');
$attributes['data-original-title'] = t('Enter the terms you wish to search for.');
}
// Additional Twig variables.
$variables['icon'] = $element['#icon'];
$variables['element'] = $element;
}
/**
* Preprocess form_element.
*/
function bootstrap_preprocess_form_element(&$variables)
{
$element =& $variables['element'];
$title_display = $element['#title_display'];
$name = !empty($element['#name']) ? $element['#name'] : FALSE;
$type = !empty($element['#type']) ? $element['#type'] : FALSE;
$checkbox = $type && $type === 'checkbox';
$radio = $type && $type === 'radio';
$has_tooltip = FALSE;
// This function is invoked as theme wrapper, but the rendered form element
// may not necessarily have been processed by Drupal::formBuilder()->doBuildForm().
$element += array('#title_display' => 'before');
// Check for errors and set correct error class.
$formState = new FormState();
if (isset($element['#parents']) && $formState->getError($element) || !empty($element['#required']) && bootstrap_setting('forms_required_has_error')) {
$variables['has_error'] = TRUE;
}
if (!empty($element['#autocomplete_route_name']) && Drupal::PathValidator($element['#autocomplete_route_name'])) {
$variables['is_autocomplete'] = TRUE;
}
// See http://getbootstrap.com/css/#forms-controls.
if (isset($element['#type'])) {
if ($radio) {
$variables['is_radio'] = TRUE;
} elseif ($checkbox) {
$variables['is_checkbox'] = TRUE;
} elseif ($type != 'hidden') {
$variables['is_form_group'] = TRUE;
}
}
// If #title is not set, we don't display any label or required marker.
if (!isset($element['#title'])) {
$element['#title_display'] = 'none';
}
$variables['title_display'] = $element['#title_display'];
// Add label_display and label variables to template.
$variables['label_display'] = $element['#title_display'];
// Place single checkboxes and radios in the label field.
if (($checkbox || $radio) && $title_display != 'none' && $title_display != 'invisible') {
$variables['label']['#children'] = $variables['children'];
unset($variables['children']);
unset($variables['description']);
// Pass the label attributes to the label, if available.
if (isset($variables['element']['#label_attributes'])) {
$variables['label']['#label_attributes'] = $variables['element']['#label_attributes'];
}
}
// Create variables for #input_group and #input_group_button flags.
if (isset($element['#input_group'])) {
$variables['input_group'] = $element['#input_group'];
}
if (isset($element['#input_group_button'])) {
$variables['input_group_button'] = $element['#input_group_button'];
}
$prefix = '';
$suffix = '';
if (isset($element['#field_prefix']) || isset($element['#field_suffix'])) {
// Determine if "#input_group" was specified.
if (!empty($element['#input_group'])) {
$prefix = array('#markup' => '<div class="input-group">' . (isset($element['#field_prefix']) ? '<span class="input-group-addon">' . $element['#field_prefix'] . '</span>' : ''));
$suffix = array('#markup' => (isset($element['#field_suffix']) ? '<span class="input-group-addon">' . $element['#field_suffix'] . '</span>' : '') . '</div>');
} elseif (!empty($element['#input_group_button'])) {
$prefix = array('#markup' => '<div class="input-group">' . (isset($element['#field_prefix']) ? '<span class="input-group-btn">' . $element['#field_prefix'] . '</span>' : ''));
$suffix = array('#markup' => (isset($element['#field_suffix']) ? '<span class="input-group-btn">' . $element['#field_suffix'] . '</span>' : '') . '</div>');
}
$render = \Drupal::service('renderer');
$variables['prefix'] = $render->render($prefix);
$variables['suffix'] = $render->render($suffix);
} else {
$variables['prefix'] = '';
$variables['suffix'] = '';
}
}
