--- /dev/null
+<?php
+
+namespace Drupal\ajax_forms_test\Form;
+
+use Drupal\ajax_forms_test\Callbacks;
+use Drupal\Core\Form\FormBase;
+use Drupal\Core\Form\FormStateInterface;
+
+/**
+ * Form builder: Builds a form that has image button with an ajax callback.
+ */
+class AjaxFormsTestImageButtonForm extends FormBase {
+
+ /**
+ * {@inheritdoc}
+ */
+ public function getFormId() {
+ return 'ajax_forms_test_image_button_form';
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function buildForm(array $form, FormStateInterface $form_state) {
+ $object = new Callbacks();
+ $form['image_button'] = [
+ '#type' => 'image_button',
+ '#name' => 'image_button',
+ '#src' => 'core/misc/icons/787878/cog.svg',
+ '#attributes' => ['alt' => $this->t('Edit')],
+ '#op' => 'edit',
+ '#ajax' => [
+ 'callback' => [$object, 'imageButtonCallback'],
+ ],
+ '#suffix' => '<div id="ajax_image_button_result">Image button not pressed yet.</div>',
+ ];
+
+ return $form;
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function submitForm(array &$form, FormStateInterface $form_state) {
+ // No submit code needed.
+ }
+
+}