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Added islandora_advanced_search module.

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Nigel Banks 2021-02-10 13:14:52 +00:00
commit 698cbcad8b
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src/Plugin/facets/widget/IncludeExcludeLinksWidget.php Normal file
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<?php
namespace Drupal\islandora_advanced_search\Plugin\facets\widget;
use Drupal\facets\Plugin\facets\widget\LinksWidget;
use Drupal\Core\Link;
use Drupal\facets\Result\ResultInterface;
/**
* The links widget.
*
* @FacetsWidget(
* id = "include_exclude_links",
* label = @Translation("List of links that allow the user to include / exclude facets."),
* description = @Translation("A simple widget that shows a list of +/- links."),
* )
*/
class IncludeExcludeLinksWidget extends LinksWidget {
/**
* {@inheritdoc}
*/
protected function prepareLink(ResultInterface $result) {
$facet = $result->getFacet();
$facet_source_id = $facet->getFacetSourceId();
$facet_manager = \Drupal::service('facets.manager');
$facets = $facet_manager->getFacetsByFacetSourceId($facet_source_id);
$raw_value = $result->getRawValue();
$count = $result->getCount();
$url = $result->getUrl();
$exclude_facet = $this->getExcludeFacet($facet, $facets);
$exclude_result = $this->getExcludeResult($exclude_facet, $raw_value);
$exclude_url = $exclude_result ? $exclude_result->getUrl() : NULL;
return [
'#theme' => 'facets_result_item',
'#is_active' => $result->isActive(),
'#value' => [
'text' => (new Link($result->getDisplayValue(), $url))->toRenderable(),
'include' => (new Link(' ', $url))->toRenderable() + [
'#attributes' => [
'class' => ['facet-item__include', 'fa', 'fa-plus'],
],
],
'exclude' => $exclude_url ? (new Link(' ', $exclude_url))->toRenderable() + [
'#attributes' => [
'class' => ['facet-item__exclude', 'fa', 'fa-minus'],
],
] : NULL,
],
'#show_count' => $this->getConfiguration()['show_numbers'] && ($count !== NULL),
'#count' => $count,
'#facet' => $facet,
'#raw_value' => $raw_value,
];
}
/**
* Looks for the excluded facet version of the included facet.
*/
protected function getExcludeResult($facet, $raw_value) {
if ($facet) {
foreach ($facet->getResults() as $result) {
if ($result->getRawValue() === $raw_value) {
return $result;
}
}
}
return NULL;
}
/**
* Looks for the excluded facet version of the included facet.
*/
protected function getExcludeFacet($include, $facets) {
$field_identifier = $include->getFieldIdentifier();
foreach ($facets as $facet) {
if ($field_identifier === $facet->getFieldIdentifier() && $facet->getExclude()) {
return $facet;
}
}
return NULL;
}
}