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- <?php
- namespace Drupal\Core\Theme;
- use Drupal\Core\Extension\Extension;
- /**
- * Defines an interface which contain theme initialization logic.
- */
- interface ThemeInitializationInterface {
- /**
- * Initializes a given theme.
- *
- * This loads the active theme, for example include its engine file.
- *
- * @param string $theme_name
- * The machine name of the theme.
- *
- * @return \Drupal\Core\Theme\ActiveTheme
- * An active theme object instance for the given theme.
- */
- public function initTheme($theme_name);
- /**
- * Builds an active theme object.
- *
- * @param string $theme_name
- * The machine name of the theme.
- *
- * @return \Drupal\Core\Theme\ActiveTheme
- * An active theme object instance for the given theme.
- *
- * @throws \Drupal\Core\Theme\MissingThemeDependencyException
- * Thrown when base theme for installed theme is not installed.
- */
- public function getActiveThemeByName($theme_name);
- /**
- * Loads a theme, so it is ready to be used.
- *
- * Loading a theme includes loading and initializing the engine,
- * each base theme and its engines.
- *
- * @param \Drupal\Core\Theme\ActiveTheme $active_theme
- * The theme to load.
- */
- public function loadActiveTheme(ActiveTheme $active_theme);
- /**
- * Builds up the active theme object from extensions.
- *
- * @param \Drupal\Core\Extension\Extension $theme
- * The theme extension object.
- * @param \Drupal\Core\Extension\Extension[] $base_themes
- * An array of extension objects of base theme and its bases. It is ordered
- * by 'next parent first', meaning the top level of the chain will be first.
- *
- * @return \Drupal\Core\Theme\ActiveTheme
- * The active theme instance for the passed in $theme.
- */
- public function getActiveTheme(Extension $theme, array $base_themes = []);
- }
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