function JsAjaxTestForm::buildForm

Form for testing the addition of various types of elements via Ajax.

Overrides FormInterface::buildForm

File

core/modules/system/tests/modules/js_ajax_test/src/Form/JsAjaxTestForm.php, line 27

Class

JsAjaxTestForm

Test form for js_ajax_test.

Namespace

Code

public function buildForm(array $form, FormStateInterface $form_state) {
    $form['#attached']['library'][] = 'js_ajax_test/ajax';
    $form['custom']['#prefix'] = '<div id="js_ajax_test_form_wrapper">';
    $form['custom']['#suffix'] = '</div>';
    // Button to test for the waitForButton() assertion.
    $form['test_button'] = [
        '#type' => 'submit',
        '#value' => $this->t('Add button'),
        '#button_type' => 'primary',
        '#ajax' => [
            'callback' => [
                static::class,
                'addButton',
            ],
            'progress' => [
                'type' => 'throbber',
                'message' => NULL,
            ],
            'wrapper' => 'js_ajax_test_form_wrapper',
        ],
    ];
    return $form;
}