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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.
*/
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();
}
}