FormTestTableSelectColspanForm.php

<?php

namespace Drupal\form_test\Form;

use Drupal\Core\Form\FormStateInterface;

/**
 * Builds a form to test table selects with different column spans.
 *
 * @internal
 */
class FormTestTableSelectColspanForm extends FormTestTableSelectFormBase {
    
    /**
     * {@inheritdoc}
     */
    public function getFormId() {
        return '_form_test_tableselect_colspan_form';
    }
    
    /**
     * {@inheritdoc}
     */
    public function buildForm(array $form, FormStateInterface $form_state) {
        [
            $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) {
    }

}