PathFilterForm.php

<?php

namespace Drupal\path\Form;

use Drupal\Core\Form\FormBase;
use Drupal\Core\Form\FormStateInterface;

/**
 * Provides the path admin overview filter form.
 *
 * @internal
 */
class PathFilterForm extends FormBase {

  /**
   * {@inheritdoc}
   */
  public function getFormId() {
    return 'path_admin_filter_form';
  }

  /**
   * {@inheritdoc}
   */
  public function buildForm(array $form, FormStateInterface $form_state, $keys = NULL) {
    $form['#attributes'] = [
      'class' => [
        'search-form',
      ],
    ];
    $form['basic'] = [
      '#type' => 'details',
      '#title' => $this
        ->t('Filter aliases'),
      '#open' => TRUE,
      '#attributes' => [
        'class' => [
          'container-inline',
        ],
      ],
    ];
    $form['basic']['filter'] = [
      '#type' => 'search',
      '#title' => $this
        ->t('Path alias'),
      '#title_display' => 'invisible',
      '#default_value' => $keys,
      '#maxlength' => 128,
      '#size' => 25,
    ];
    $form['basic']['submit'] = [
      '#type' => 'submit',
      '#value' => $this
        ->t('Filter'),
    ];
    if ($keys) {
      $form['basic']['reset'] = [
        '#type' => 'submit',
        '#value' => $this
          ->t('Reset'),
        '#submit' => [
          '::resetForm',
        ],
      ];
    }
    return $form;
  }

  /**
   * {@inheritdoc}
   */
  public function submitForm(array &$form, FormStateInterface $form_state) {
    $form_state
      ->setRedirect('entity.path_alias.collection', [], [
      'query' => [
        'search' => trim($form_state
          ->getValue('filter')),
      ],
    ]);
  }

  /**
   * Resets the filter selections.
   */
  public function resetForm(array &$form, FormStateInterface $form_state) {
    $form_state
      ->setRedirect('entity.path_alias.collection');
  }

}