function ThemeInitialization::loadActiveTheme

Overrides ThemeInitializationInterface::loadActiveTheme

File

core/lib/Drupal/Core/Theme/ThemeInitialization.php, line 129

Class

ThemeInitialization

Provides the theme initialization logic.

Namespace

Code

public function loadActiveTheme(ActiveTheme $active_theme) {
    // Initialize the theme.
    if ($theme_engine = $active_theme->getEngine()) {
        // Include the engine.
        include_once $this->root . '/' . $active_theme->getOwner();
        if (function_exists($theme_engine . '_init')) {
            @trigger_error('THEME_ENGINE_init() is deprecated in drupal:9.3.0 and removed in drupal:10.0.0. There is no replacement. See https://www.drupal.org/node/3246978', E_USER_DEPRECATED);
            foreach ($active_theme->getBaseThemeExtensions() as $base) {
                call_user_func($theme_engine . '_init', $base);
            }
            call_user_func($theme_engine . '_init', $active_theme->getExtension());
        }
        else {
            foreach ($active_theme->getBaseThemeExtensions() as $base) {
                $base->load();
            }
            $active_theme->getExtension()
                ->load();
        }
    }
    else {
        // include non-engine theme files
        foreach ($active_theme->getBaseThemeExtensions() as $base) {
            // Include the theme file or the engine.
            if ($base->owner) {
                include_once $this->root . '/' . $base->owner;
            }
        }
        // and our theme gets one too.
        if ($active_theme->getOwner()) {
            include_once $this->root . '/' . $active_theme->getOwner();
        }
    }
    // Always include Twig as the default theme engine.
    include_once $this->root . '/core/themes/engines/twig/twig.engine';
}