View source
<?php
namespace Drupal\cshs\Plugin\Field\FieldFormatter;
use Drupal\Core\Link;
use Drupal\Core\Form\FormStateInterface;
use Drupal\Core\Field\FieldItemListInterface;
class CshsFlexibleHierarchyFormatter extends CshsFormatterBase {
public static function defaultSettings() : array {
return [
'format' => '[term:name]',
'clear' => TRUE,
] + parent::defaultSettings();
}
public function settingsForm(array $form, FormStateInterface $form_state) : array {
$element = parent::settingsForm($form, $form_state);
$element['format'] = [
'#type' => 'textfield',
'#title' => $this
->t('Format'),
'#description' => $this
->t('Specify a format for each field item by using tokens.'),
'#default_value' => $this
->getSetting('format'),
];
$element['clear'] = [
'#type' => 'checkbox',
'#title' => $this
->t('Clear Tokens'),
'#description' => $this
->t('Remove token from final text if no replacement value is generated'),
'#default_value' => $this
->getSetting('clear'),
];
if (\Drupal::moduleHandler()
->moduleExists('token')) {
$element['token_help'] = [
'#type' => 'markup',
'#theme' => 'token_tree_link',
'#token_types' => [
'term',
],
];
}
return $element;
}
public function settingsSummary() : array {
$summary = parent::settingsSummary();
$summary[] = $this
->t('Format: @format', [
'@format' => $this
->getSetting('format'),
]);
return $summary;
}
public function viewElements(FieldItemListInterface $items, $langcode) : array {
$elements = [];
$linked = $this
->getSetting('linked');
$format = $this
->getSetting('format');
$clear = $this
->getSetting('clear');
$token = \Drupal::token();
foreach ($this
->getEntitiesToView($items, $langcode) as $delta => $term) {
$text = $token
->replace($format, [
'term' => $term,
], [
'clear' => $clear,
]);
if ($linked) {
$text = Link::fromTextAndUrl($text, $term
->toUrl())
->toString();
}
$elements[$delta]['#markup'] = $text;
}
return $elements;
}
}