/**
* {@inheritdoc}
*/
public function alter(&$cache, &$context1 = NULL, &$context2 = NULL)
{
// Sort the registry alphabetically (for easier debugging).
ksort($cache);
// Ensure paths to templates are set properly. This allows templates to
// be moved around in a theme without having to constantly ensuring that
// the theme's hook_theme() definitions have the correct static "path" set.
foreach ($this->currentTheme->getAncestry() as $ancestor) {
$current_theme = $ancestor->getName() === $this->currentTheme->getName();
$theme_path = $ancestor->getPath();
foreach ($ancestor->fileScan('/\\.html\\.twig$/', 'templates') as $file) {
$hook = str_replace('-', '_', str_replace('.html.twig', '', $file->filename));
$path = dirname($file->uri);
$incomplete = !isset($cache[$hook]) || strrpos($hook, '__');
if (!isset($cache[$hook])) {
$cache[$hook] = [];
}
$cache[$hook]['path'] = $path;
$cache[$hook]['type'] = $current_theme ? 'theme' : 'base_theme';
$cache[$hook]['theme path'] = $theme_path;
if ($incomplete) {
$cache[$hook]['incomplete preprocess functions'] = TRUE;
}
}
}
// Discover all the theme's preprocess plugins.
$preprocess_manager = new PreprocessManager($this->currentTheme);
$plugins = $preprocess_manager->getDefinitions();
ksort($plugins, SORT_NATURAL);
// Iterate over the preprocess plugins.
foreach ($plugins as $plugin_id => $definition) {
$incomplete = !isset($cache[$plugin_id]) || strrpos($plugin_id, '__');
if (!isset($cache[$plugin_id])) {
$cache[$plugin_id] = [];
}
array_walk($cache, function (&$info, $hook) use($plugin_id, $definition) {
if ($hook === $plugin_id || strpos($hook, $plugin_id . '__') === 0) {
if (!isset($info['preprocess functions'])) {
$info['preprocess functions'] = [];
}
// Due to a limitation in \Drupal\Core\Theme\ThemeManager::render,
// callbacks must be functions and not classes. We always specify
// "bootstrap_preprocess" here and then assign the plugin ID to a
// separate property that we can later intercept and properly invoke.
// @todo Revisit if/when preprocess callbacks can be any callable.
Bootstrap::addCallback($info['preprocess functions'], 'bootstrap_preprocess', $definition['replace'], $definition['action']);
$info['preprocess functions'] = array_unique($info['preprocess functions']);
$info['bootstrap preprocess'] = $plugin_id;
}
});
if ($incomplete) {
$cache[$plugin_id]['incomplete preprocess functions'] = TRUE;
}
}
// Allow core to post process.
$this->postProcessExtension($cache, $this->theme);
}
/**
* {@inheritdoc}
*/
public function __construct(Theme $theme)
{
parent::__construct($theme->getName() . '.settings', \Drupal::service('config.storage'), \Drupal::service('event_dispatcher'), \Drupal::service('config.typed'));
$this->theme = $theme;
// Retrieve cache.
$cache = $theme->getCache('settings');
// Use cached settings.
if ($defaults = $cache->get('defaults')) {
$this->defaults = $defaults;
$this->initWithData($cache->get('data', []));
return;
}
// Retrieve the global settings from configuration.
$this->defaults = \Drupal::config('system.theme.global')->get();
// Retrieve the theme setting plugin discovery defaults (code).
foreach ($theme->getSettingPlugins() as $name => $setting) {
$this->defaults[$name] = $setting->getDefaultValue();
}
// Retrieve the theme ancestry.
$ancestry = $theme->getAncestry();
// Remove the active theme from the ancestry.
$active_theme = array_pop($ancestry);
// Iterate and merge all ancestor theme config into the defaults.
foreach ($ancestry as $ancestor) {
$this->defaults = NestedArray::mergeDeepArray([$this->defaults, $this->getThemeConfig($ancestor)], TRUE);
}
// Merge the active theme config.
$this->initWithData($this->getThemeConfig($active_theme, TRUE));
// Cache the data and defaults.
$cache->set('data', $this->data);
$cache->set('defaults', $this->defaults);
}
/**
* Creates the discovery object.
*
* @param \Drupal\bootstrap\Theme $theme
* The theme to use for discovery.
* @param string|bool $subdir
* The plugin's subdirectory, for example Plugin/views/filter.
* @param string|null $plugin_interface
* (optional) The interface each plugin should implement.
* @param string $plugin_definition_annotation_name
* (optional) Name of the annotation that contains the plugin definition.
* Defaults to 'Drupal\Component\Annotation\Plugin'.
*/
public function __construct(Theme $theme, $subdir, $plugin_interface = NULL, $plugin_definition_annotation_name = 'Drupal\\Component\\Annotation\\Plugin')
{
// Get the active theme.
$this->theme = $theme;
// Determine the namespaces to search for.
$namespaces = [];
foreach ($theme->getAncestry() as $ancestor) {
$namespaces['Drupal\\' . $ancestor->getName()] = [DRUPAL_ROOT . '/' . $ancestor->getPath() . '/src'];
}
$this->namespaces = new \ArrayObject($namespaces);
$this->subdir = $subdir;
$this->pluginDefinitionAnnotationName = $plugin_definition_annotation_name;
$this->pluginInterface = $plugin_interface;
$this->themeHandler = \Drupal::service('theme_handler');
$this->themeManager = \Drupal::service('theme.manager');
}
