class BasicSettingsForm

class BasicSettingsForm extends ConfigFormBase {
    use RedundantEditableConfigNamesTrait;
    
    /**
     * The theme handler.
     *
     * @var \Drupal\Core\Extension\ThemeHandlerInterface
     */
    protected $themeHandler;
    
    /**
     * Constructs a \Drupal\views_ui\Form\BasicSettingsForm object.
     *
     * @param \Drupal\Core\Config\ConfigFactoryInterface $config_factory
     *   The factory for configuration objects.
     * @param \Drupal\Core\Config\TypedConfigManagerInterface $typedConfigManager
     *   The typed config manager.
     * @param \Drupal\Core\Extension\ThemeHandlerInterface $theme_handler
     *   The theme handler.
     */
    public function __construct(ConfigFactoryInterface $config_factory, TypedConfigManagerInterface $typedConfigManager, ThemeHandlerInterface $theme_handler) {
        parent::__construct($config_factory, $typedConfigManager);
        $this->themeHandler = $theme_handler;
    }
    
    /**
     * {@inheritdoc}
     */
    public static function create(ContainerInterface $container) {
        return new static($container->get('config.factory'), $container->get('config.typed'), $container->get('theme_handler'));
    }
    
    /**
     * {@inheritdoc}
     */
    public function getFormId() {
        return 'views_ui_admin_settings_basic';
    }
    
    /**
     * {@inheritdoc}
     */
    public function buildForm(array $form, FormStateInterface $form_state) {
        $form = parent::buildForm($form, $form_state);
        $options = [];
        foreach ($this->themeHandler
            ->listInfo() as $name => $theme) {
            if ($theme->status) {
                $options[$name] = $theme->info['name'];
            }
        }
        // This is not currently a fieldset but we may want it to be later,
        // so this will make it easier to change if we do.
        $form['basic'] = [];
        $form['basic']['ui_show_default_display'] = [
            '#type' => 'checkbox',
            '#title' => $this->t('Always show the default display'),
            '#config_target' => 'views.settings:ui.show.default_display',
        ];
        $form['basic']['ui_show_advanced_column'] = [
            '#type' => 'checkbox',
            '#title' => $this->t('Always show advanced display settings'),
            '#config_target' => 'views.settings:ui.show.advanced_column',
        ];
        $form['basic']['ui_show_display_embed'] = [
            '#type' => 'checkbox',
            '#title' => $this->t('Allow embedded displays'),
            '#description' => $this->t('Embedded displays can be used in code via views_embed_view().'),
            '#config_target' => 'views.settings:ui.show.display_embed',
        ];
        $form['basic']['ui_exposed_filter_any_label'] = [
            '#type' => 'select',
            '#title' => $this->t('Label for "Any" value on non-required single-select exposed filters'),
            '#options' => [
                'old_any' => '<Any>',
                'new_any' => $this->t('- Any -'),
            ],
            '#config_target' => 'views.settings:ui.exposed_filter_any_label',
        ];
        $form['live_preview'] = [
            '#type' => 'details',
            '#title' => $this->t('Live preview settings'),
            '#open' => TRUE,
        ];
        $form['live_preview']['ui_always_live_preview'] = [
            '#type' => 'checkbox',
            '#title' => $this->t('Automatically update preview on changes'),
            '#config_target' => 'views.settings:ui.always_live_preview',
        ];
        $form['live_preview']['ui_show_preview_information'] = [
            '#type' => 'checkbox',
            '#title' => $this->t('Show information and statistics about the view during live preview'),
            '#config_target' => 'views.settings:ui.show.preview_information',
        ];
        $form['live_preview']['options'] = [
            '#type' => 'container',
            '#states' => [
                'visible' => [
                    ':input[name="ui_show_preview_information"]' => [
                        'checked' => TRUE,
                    ],
                ],
            ],
        ];
        $form['live_preview']['options']['ui_show_sql_query_enabled'] = [
            '#type' => 'checkbox',
            '#title' => $this->t('Show the SQL query'),
            '#config_target' => 'views.settings:ui.show.sql_query.enabled',
        ];
        $form['live_preview']['options']['ui_show_sql_query_where'] = [
            '#type' => 'radios',
            '#states' => [
                'visible' => [
                    ':input[name="ui_show_sql_query_enabled"]' => [
                        'checked' => TRUE,
                    ],
                ],
            ],
            '#title' => $this->t('Show SQL query'),
            '#options' => [
                'above' => $this->t('Above the preview'),
                'below' => $this->t('Below the preview'),
            ],
            '#config_target' => 'views.settings:ui.show.sql_query.where',
        ];
        $form['live_preview']['options']['ui_show_performance_statistics'] = [
            '#type' => 'checkbox',
            '#title' => $this->t('Show performance statistics'),
            '#config_target' => 'views.settings:ui.show.performance_statistics',
        ];
        $form['live_preview']['options']['ui_show_additional_queries'] = [
            '#type' => 'checkbox',
            '#title' => $this->t('Show other queries run during render during live preview'),
            '#description' => $this->t("Drupal has the potential to run many queries while a view is being rendered. Checking this box will display every query run during view render as part of the live preview."),
            '#config_target' => 'views.settings:ui.show.additional_queries',
        ];
        return $form;
    }

}