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<?php

/**

 * @file

 * Stub file for "button" theme hook [pre]process functions.

 */

/**

 * Pre-processes variables for the "button" theme hook.

 *

 * See theme function for list of available variables.

 *

 * @see bootstrap_button()

 * @see theme_button()

 *

 * @ingroup theme_preprocess

 */

function bootstrap_preprocess_button(&$vars) {

  $element = &$vars['element'];

  // Drupal buttons should be of type 'submit'.

  // @see https://www.drupal.org/node/2540452

  $element['#attributes']['type'] = 'submit';

  // Set the element's other attributes.

  element_set_attributes($element, array('id', 'name', 'value'));

  // Add the base Bootstrap button class.

  $element['#attributes']['class'][] = 'btn';

  // Add button size, if necessary.

  if ($size = bootstrap_setting('button_size')) {

    $element['#attributes']['class'][] = $size;

  }

  // Colorize button.

  _bootstrap_colorize_button($element);

  // Add in the button type class.

  $element['#attributes']['class'][] = 'form-' . $element['#button_type'];

  // Ensure that all classes are unique, no need for duplicates.

  $element['#attributes']['class'] = array_unique($element['#attributes']['class']);

}