Chris@2: <?php
Chris@2: use Drupal\Core\Form\FormBase;
Chris@2: use Drupal\Core\Form\FormStateInterface;
Chris@2: /**
Chris@2:  * @file
Chris@2:  * Validatation for some of the theme settings.
Chris@2:  *
Chris@2:  * @param $form
Chris@2:  * @param FormStateInterface $form_state
Chris@2:  */
Chris@2: function mayo_settings_validate($form, FormStateInterface $form_state) {
Chris@2:   $values = $form_state->getValues();
Chris@2:   $theme_name = \Drupal::theme()->getActiveTheme()->getName();
Chris@2: 
Chris@2:   // Validate our form #state required fields, #states are UI only.
Chris@2:   // Bigscreen
Chris@2:   if (empty($values['bigscreen_sidebar_first'])) {
Chris@2:     form_set_error('bigscreen_sidebar_first', t('Standard Layout <em>First sidebar</em> width is empty - you must enter a value.'));
Chris@2:   }
Chris@2:   if (empty($values['bigscreen_sidebar_second'])) {
Chris@2:     form_set_error('bigscreen_sidebar_second', t('Standard Layout <em>Second sidebar</em> width is empty - you must enter a value.'));
Chris@2:   }
Chris@2: 
Chris@2:   // Tablet
Chris@2:   if (empty($values['tablet_landscape_sidebar_first'])) {
Chris@2:     form_set_error('tablet_landscape_sidebar_first', t('Tablet Landscape <em>First sidebar</em> width is empty - you must enter a value.'));
Chris@2:   }
Chris@2:   if ($values['tablet_landscape_layout'] === 'three_col_grail' || $values['tablet_landscape_layout'] === 'two_sidebars_left' || $values['tablet_landscape_layout'] === 'two_sidebars_right') {
Chris@2:     if (empty($values['tablet_landscape_sidebar_second'])) {
Chris@2:       form_set_error('tablet_landscape_sidebar_second', t('Tablet Landscape <em>First sidebar</em> width is empty - you must enter a value. The layout you selected requires values for both sidebars.'));
Chris@2:     }
Chris@2:   }
Chris@2: 
Chris@2:   // Smalltouch
Chris@2:   if ($values['smalltouch_landscape_layout'] === 'one_col_vert') {
Chris@2:     if (empty($values['smalltouch_landscape_sidebar_first'])) {
Chris@2:       form_set_error('smalltouch_landscape_sidebar_first', t('Smalltouch First Sidebar width is empty - enter a value or choose another layout.'));
Chris@2:     }
Chris@2:     if (empty($values['smalltouch_landscape_sidebar_second'])) {
Chris@2:       form_set_error('smalltouch_landscape_sidebar_second', t('Smalltouch Second Sidebar width is empty - enter a value or choose another layout.'));
Chris@2:     }
Chris@2:   }
Chris@2: }