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<?php
namespace Drupal\views\Plugin\views\field;
use Drupal\Component\Utility\Xss;
use Drupal\Core\Form\FormStateInterface;
use Drupal\views\Render\ViewsRenderPipelineMarkup;
use Drupal\views\ResultRow;
/**
* A handler to provide a field that is completely custom by the administrator.
*
* @ingroup views_field_handlers
*
* @ViewsField("custom")
*/
class Custom extends FieldPluginBase {
/**
* {@inheritdoc}
*/
public function usesGroupBy() {
return FALSE;
}
/**
* {@inheritdoc}
*/
public function query() {
// do nothing -- to override the parent query.
}
/**
* {@inheritdoc}
*/
protected function defineOptions() {
$options = parent::defineOptions();
// Override the alter text option to always alter the text.
$options['alter']['contains']['alter_text'] = ['default' => TRUE];
$options['hide_alter_empty'] = ['default' => FALSE];
return $options;
}
/**
* {@inheritdoc}
*/
public function buildOptionsForm(&$form, FormStateInterface $form_state) {
parent::buildOptionsForm($form, $form_state);
// Remove the checkbox
unset($form['alter']['alter_text']);
unset($form['alter']['text']['#states']);
unset($form['alter']['help']['#states']);
$form['#pre_render'][] = [$this, 'preRenderCustomForm'];
}
/**
* {@inheritdoc}
*/
public function render(ResultRow $values) {
// Return the text, so the code never thinks the value is empty.
return ViewsRenderPipelineMarkup::create(Xss::filterAdmin($this->options['alter']['text']));
}
/**
* Prerender function to move the textarea to the top of a form.
*
* @param array $form
* The form build array.
*
* @return array
* The modified form build array.
*/
public function preRenderCustomForm($form) {
$form['text'] = $form['alter']['text'];
$form['help'] = $form['alter']['help'];
unset($form['alter']['text']);
unset($form['alter']['help']);
return $form;
}
}