getAttribute('id', Html::getUniqueId($variables->offsetGet('id', 'bootstrap-carousel')));
unset($variables['id']);
// Build slides.
foreach ($variables->slides as $key => &$slide) {
if (!isset($slide['attributes'])) {
$slide['attributes'] = [];
}
$slide['attributes'] = new Attribute($slide['attributes']);
}
// Build controls.
if ($variables->controls) {
$left_icon = Bootstrap::glyphicon('chevron-left');
$right_icon = Bootstrap::glyphicon('chevron-right');
$url = Url::fromUserInput("#$id");
$variables->controls = [
'left' => [
'#type' => 'link',
'#title' => new FormattableMarkup(Element::create($left_icon)->renderPlain() . '@text', ['@text' => t('Previous')]),
'#url' => $url,
'#attributes' => [
'class' => ['left', 'carousel-control'],
'role' => 'button',
'data-slide' => 'prev',
],
],
'right' => [
'#type' => 'link',
'#title' => new FormattableMarkup(Element::create($right_icon)->renderPlain() . '@text', ['@text' => t('Next')]),
'#url' => $url,
'#attributes' => [
'class' => ['right', 'carousel-control'],
'role' => 'button',
'data-slide' => 'next',
],
],
];
}
// Build indicators.
if ($variables->indicators) {
$variables->indicators = [
'#theme' => 'item_list__bootstrap_carousel_indicators',
'#list_type' => 'ol',
'#items' => array_keys($variables->slides),
'#context' => [
'target' => "#$id",
'start_index' => $variables->start_index,
],
];
}
// Ensure all attributes are proper objects.
$this->preprocessAttributes();
}
}