--- /dev/null
+<?php
+
+namespace Drupal\form_test\Form;
+
+use Drupal\Core\Form\FormStateInterface;
+
+class FormTestTableSelectColspanForm extends FormTestTableSelectFormBase {
+
+ /**
+ * {@inheritdoc}
+ */
+ public function getFormId() {
+ return '_form_test_tableselect_colspan_form';
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function buildForm(array $form, FormStateInterface $form_state) {
+ list($header, $options) = _form_test_tableselect_get_data();
+
+ // Change the data so that the third column has colspan=2.
+ $header['three'] = ['data' => 'Three', 'colspan' => 2];
+ unset($header['four']);
+ // Set the each row so that column 3 is an array.
+ foreach ($options as $name => $row) {
+ $options[$name]['three'] = [$row['three'], $row['four']];
+ unset($options[$name]['four']);
+ }
+ // Combine cells in row 3.
+ $options['row3']['one'] = ['data' => $options['row3']['one'], 'colspan' => 2];
+ unset($options['row3']['two']);
+ $options['row3']['three'] = ['data' => $options['row3']['three'][0], 'colspan' => 2];
+ unset($options['row3']['four']);
+
+ return $this->tableselectFormBuilder($form, $form_state, ['#header' => $header, '#options' => $options]);
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function submitForm(array &$form, FormStateInterface $form_state) {
+ }
+
+}