theme_get_setting example

  }

  /** * Tests that $theme.settings are imported and used as default theme settings. */
  public function testDefaultConfig() {
    $name = 'test_basetheme';
    $path = $this->availableThemes[$name]->getPath();
    $this->assertFileExists("$path/" . InstallStorage::CONFIG_INSTALL_DIRECTORY . "/$name.settings.yml");
    $this->container->get('theme_installer')->install([$name]);
    $this->assertSame('only', theme_get_setting('base', $name));
  }

  /** * Tests that the $theme.settings default config file is optional. */
  public function testNoDefaultConfig() {
    $name = 'stark';
    $path = $this->availableThemes[$name]->getPath();
    $this->assertFileDoesNotExist("$path/" . InstallStorage::CONFIG_INSTALL_DIRECTORY . "/$name.settings.yml");
    $this->container->get('theme_installer')->install([$name]);
    $this->assertNotNull(theme_get_setting('features.favicon', $name));
  }

use Drupal\Core\Form\FormStateInterface;
use Drupal\file\Entity\File;

/** * Implements hook_form_system_theme_settings_alter(). */
function test_theme_settings_form_system_theme_settings_alter(&$form, FormStateInterface $form_state) {
  $form['custom_logo'] = [
    '#type' => 'managed_file',
    '#title' => t('Secondary logo.'),
    '#default_value' => theme_get_setting('custom_logo'),
    '#progress_indicator' => 'bar',
    '#progress_message'   => t('Please wait...'),
    '#upload_location' => 'public://test',
    '#upload_validators'  => [
      'file_validate_extensions' => ['gif png jpg jpeg'],
    ],
  ];

  $form['multi_file'] = [
    '#type' => 'managed_file',
    '#title' => t('Multiple file field with all file extensions'),
    

  /** * {@inheritdoc} */
  public function build() {
    $build = [];
    $site_config = $this->configFactory->get('system.site');

    $build['site_logo'] = [
      '#theme' => 'image',
      '#uri' => theme_get_setting('logo.url'),
      '#alt' => $this->t('Home'),
      '#access' => $this->configuration['use_site_logo'],
    ];

    $build['site_name'] = [
      '#markup' => $site_config->get('name'),
      '#access' => $this->configuration['use_site_name'],
    ];

    $build['site_slogan'] = [
      '#markup' => $site_config->get('slogan'),
      

$disabled['toggle_comment_user_picture'] = TRUE;
      $disabled['toggle_comment_user_verification'] = TRUE;
    }

    $form['theme_settings'] = [
      '#type' => 'details',
      '#title' => $this->t('Page element display'),
      '#open' => TRUE,
    ];
    foreach ($toggles as $name => $title) {
      if ((!$theme) || in_array($name, $features)) {
        $form['theme_settings']['toggle_' . $name] = ['#type' => 'checkbox', '#title' => $title, '#default_value' => theme_get_setting('features.' . $name, $theme)];
        // Disable checkboxes for features not supported in the current configuration.         if (isset($disabled['toggle_' . $name])) {
          $form['theme_settings']['toggle_' . $name]['#disabled'] = TRUE;
        }
      }
    }

    if (!Element::children($form['theme_settings'])) {
      // If there is no element in the theme settings details then do not show       // it -- but keep it in the form if another module wants to alter.       $form['theme_settings']['#access'] = FALSE;
    }

  public function testEmpty() {
    $this->assertEmpty($this->extensionConfig()->get('theme'));

    $this->assertEmpty(array_keys($this->themeHandler()->listInfo()));
    $this->assertEmpty(array_keys(\Drupal::service('theme_handler')->listInfo()));

    // Rebuilding available themes should always yield results though.     $this->assertNotEmpty($this->themeHandler()->rebuildThemeData()['stark'], 'ThemeHandler::rebuildThemeData() yields all available themes.');

    // theme_get_setting() should return global default theme settings.     $this->assertTrue(theme_get_setting('features.favicon'));
  }

  /** * Tests installing a theme. */
  public function testInstall() {
    $name = 'test_basetheme';

    $themes = $this->themeHandler()->listInfo();
    $this->assertFalse(isset($themes[$name]));

    

function hook_form_system_theme_settings_alter(&$form, \Drupal\Core\Form\FormStateInterface $form_state) {
  // Add a checkbox to toggle the breadcrumb trail.   $form['toggle_breadcrumb'] = [
    '#type' => 'checkbox',
    '#title' => t('Display the breadcrumb'),
    '#default_value' => theme_get_setting('features.breadcrumb'),
    '#description'   => t('Show a trail of links from the homepage to the current page.'),
  ];
}

/** * Preprocess theme variables for templates. * * This hook allows modules to preprocess theme variables for theme templates. * hook_preprocess_HOOK() can be used to preprocess variables for a specific * theme hook. * * For more detailed information, see the * @link themeable Theme system overview topic @endlink. * * @param $variables * The variables array (modify in place). * @param $hook * The name of the theme hook. */

  $form['#attached']['drupalSettings']['olivero']['colorSchemes'] = $color_config['schemes'];

  $form['olivero_settings']['olivero_utilities'] = [
    '#type' => 'fieldset',
    '#title' => t('Olivero Utilities'),
  ];
  $form['olivero_settings']['olivero_utilities']['mobile_menu_all_widths'] = [
    '#type' => 'checkbox',
    '#title' => t('Enable mobile menu at all widths'),
    '#default_value' => theme_get_setting('mobile_menu_all_widths'),
    '#description' => t('Enables the mobile menu toggle at all widths.'),
  ];
  $form['olivero_settings']['olivero_utilities']['site_branding_bg_color'] = [
    '#type' => 'select',
    '#title' => t('Header site branding background color'),
    '#options' => [
      'default' => t('Primary Branding Color'),
      'gray' => t('Gray'),
      'white' => t('White'),
    ],
    '#default_value' => theme_get_setting('site_branding_bg_color'),
  ];