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- <?php
- namespace Drupal\system\Form;
- use Drupal\Core\Form\ConfigFormBase;
- use Drupal\Core\Form\FormStateInterface;
- /**
- * Form to select the administration theme.
- *
- * @internal
- */
- class ThemeAdminForm extends ConfigFormBase {
- /**
- * {@inheritdoc}
- */
- public function getFormId() {
- return 'system_themes_admin_form';
- }
- /**
- * {@inheritdoc}
- */
- protected function getEditableConfigNames() {
- return ['system.theme'];
- }
- /**
- * {@inheritdoc}
- */
- public function buildForm(array $form, FormStateInterface $form_state, array $theme_options = NULL) {
- // Administration theme settings.
- $form['admin_theme'] = [
- '#type' => 'details',
- '#title' => $this->t('Administration theme'),
- '#open' => TRUE,
- ];
- $form['admin_theme']['admin_theme'] = [
- '#type' => 'select',
- '#options' => [0 => $this->t('Default theme')] + $theme_options,
- '#title' => $this->t('Administration theme'),
- '#description' => $this->t('Choose "Default theme" to always use the same theme as the rest of the site.'),
- '#default_value' => $this->config('system.theme')->get('admin'),
- ];
- $form['admin_theme']['actions'] = ['#type' => 'actions'];
- $form['admin_theme']['actions']['submit'] = [
- '#type' => 'submit',
- '#value' => $this->t('Save configuration'),
- '#button_type' => 'primary',
- ];
- return $form;
- }
- /**
- * {@inheritdoc}
- */
- public function submitForm(array &$form, FormStateInterface $form_state) {
- parent::submitForm($form, $form_state);
- $this->config('system.theme')->set('admin', $form_state->getValue('admin_theme'))->save();
- }
- }
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