/**
* Preprocess links in the variables array to convert them from dropbuttons.
*
* @param \Drupal\bootstrap\Utility\Variables $variables
* A variables object.
*/
protected function preprocessLinks(Variables $variables)
{
// Convert "dropbutton" theme suggestion variables.
if (Unicode::strpos($variables->theme_hook_original, 'links__dropbutton') !== FALSE && !empty($variables->links)) {
$operations = !!Unicode::strpos($variables->theme_hook_original, 'operations');
// Normal dropbutton links are not actually render arrays, convert them.
foreach ($variables->links as &$link) {
if (isset($link['title']) && $link['url']) {
$link = ['#type' => 'link', '#title' => $link['title'], '#url' => $link['url']];
}
}
// Pop off the first link as the "toggle".
$variables->toggle = array_shift($variables->links);
$toggle = Element::create($variables->toggle);
// Convert any toggle links to a proper button.
if ($toggle->isType('link')) {
$toggle->exchangeArray(['#type' => 'button', '#value' => $toggle->getProperty('title'), '#attributes' => ['data-url' => $toggle->getProperty('url')->toString()]]);
if ($operations) {
$toggle->setButtonSize('btn-xs');
}
} else {
$toggle->unsetProperty('dropbutton');
}
$variables->items = array_values($variables->links);
$variables->split = TRUE;
unset($variables->links);
}
}
/**
* {@inheritdoc}
*/
public function alter(&$suggestions, &$variables = NULL, &$hook = NULL)
{
switch ($hook) {
case 'links':
if (Unicode::strpos($variables['theme_hook_original'], 'links__dropbutton') !== FALSE) {
// Handle dropbutton "subtypes".
// @see \Drupal\bootstrap\Plugin\Prerender\Dropbutton::preRenderElement()
if ($suggestion = Unicode::substr($variables['theme_hook_original'], 17)) {
$suggestions[] = 'bootstrap_dropdown' . $suggestion;
}
$suggestions[] = 'bootstrap_dropdown';
}
break;
case 'fieldset':
case 'details':
$suggestions[] = 'bootstrap_panel';
break;
case 'input':
$element = Element::create($variables['element']);
if ($element->isButton()) {
if ($element->getProperty('dropbutton')) {
$suggestions[] = 'input__button__dropdown';
} else {
$suggestions[] = $element->getProperty('split') ? 'input__button__split' : 'input__button';
}
} elseif (!$element->isType(['checkbox', 'hidden', 'radio'])) {
$suggestions[] = 'input__form_control';
}
break;
}
}
