FilterTestFormatForm.php

<?php

namespace Drupal\filter_test\Form;

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

/**
 * Shows a test form for testing the 'text_format' form element.
 *
 * @internal
 */
class FilterTestFormatForm extends FormBase {
    
    /**
     * {@inheritdoc}
     */
    public function getFormId() {
        return 'filter_test_format_form';
    }
    
    /**
     * {@inheritdoc}
     */
    public function buildForm(array $form, FormStateInterface $form_state) {
        // This ensures that the parent array key makes it into the HTML ID of the
        // form elements.
        $form['#tree'] = TRUE;
        $form['all_formats'] = [
            '#type' => 'details',
            '#title' => 'All text formats',
        ];
        $form['all_formats']['no_default'] = [
            '#type' => 'text_format',
            '#title' => 'No default value',
        ];
        $form['all_formats']['default'] = [
            '#type' => 'text_format',
            '#title' => 'Default value',
            '#format' => 'filter_test',
        ];
        $form['all_formats']['default_missing'] = [
            '#type' => 'text_format',
            '#title' => 'Missing default value',
            '#format' => 'missing_format',
        ];
        $form['restricted_formats'] = [
            '#type' => 'details',
            '#title' => 'Restricted text format list',
        ];
        $form['restricted_formats']['no_default'] = [
            '#type' => 'text_format',
            '#title' => 'No default value',
            '#allowed_formats' => [
                'full_html',
                'filter_test',
            ],
        ];
        $form['restricted_formats']['default'] = [
            '#type' => 'text_format',
            '#title' => 'Default value',
            '#format' => 'full_html',
            '#allowed_formats' => [
                'full_html',
                'filter_test',
            ],
        ];
        $form['restricted_formats']['default_missing'] = [
            '#type' => 'text_format',
            '#title' => 'Missing default value',
            '#format' => 'missing_format',
            '#allowed_formats' => [
                'full_html',
                'filter_test',
            ],
        ];
        $form['restricted_formats']['default_disallowed'] = [
            '#type' => 'text_format',
            '#title' => 'Disallowed default value',
            '#format' => 'filtered_html',
            '#allowed_formats' => [
                'full_html',
                'filter_test',
            ],
        ];
        $form['single_format'] = [
            '#type' => 'details',
            '#title' => 'Single text format',
        ];
        $form['single_format']['no_default'] = [
            '#type' => 'text_format',
            '#title' => 'No default value',
            '#allowed_formats' => [
                'filter_test',
            ],
        ];
        $form['single_format']['default'] = [
            '#type' => 'text_format',
            '#title' => 'Default value',
            '#format' => 'filter_test',
            '#allowed_formats' => [
                'filter_test',
            ],
        ];
        $form['single_format']['default_missing'] = [
            '#type' => 'text_format',
            '#title' => 'Missing default value',
            '#format' => 'missing_format',
            '#allowed_formats' => [
                'filter_test',
            ],
        ];
        $form['single_format']['default_disallowed'] = [
            '#type' => 'text_format',
            '#title' => 'Disallowed default value',
            '#format' => 'full_html',
            '#allowed_formats' => [
                'filter_test',
            ],
        ];
        return $form;
    }
    
    /**
     * {@inheritdoc}
     */
    public function submitForm(array &$form, FormStateInterface $form_state) {
    }

}