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<?php |
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namespace Drupal\graphql_twig\Template\Loader; |
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use Drupal\Core\Cache\CacheBackendInterface; |
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use Drupal\Core\Theme\ThemeManagerInterface; |
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/** |
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* Filesystem loader that will search for fractal component shortnames. |
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*/ |
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class Loader extends \Twig_Loader_Filesystem { |
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/** |
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* @var \Drupal\Core\Theme\ThemeManagerInterface |
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*/ |
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protected $themeManager; |
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/** |
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* Static component lookup cache. |
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* |
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* @var array |
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*/ |
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protected $components = null; |
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/** |
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* @var \Drupal\Core\Cache\CacheBackendInterface |
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*/ |
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protected $cacheBackend; |
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/** |
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* @var array |
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*/ |
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protected $twigConfig; |
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public function __construct( |
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ThemeManagerInterface $themeManager, |
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array $twigConfig, |
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CacheBackendInterface $cacheBackend, |
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$paths = [], |
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?string $rootPath = NULL |
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) { |
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parent::__construct($paths, $rootPath); |
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$this->cacheBackend = $cacheBackend; |
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$this->twigConfig = $twigConfig; |
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$this->themeManager = $themeManager; |
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} |
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/** |
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* List all components found within a specific path. |
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* |
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* @param string $path |
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* The directory to scan for |
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* |
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* @return string[] |
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* Map of component filenames keyed by component handle. |
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*/ |
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protected function listComponents($path) { |
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if ($this->twigConfig['cache'] && $cache = $this->cacheBackend->get($path)) { |
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return $cache->data; |
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} |
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foreach (file_scan_directory($path, '/.*\.twig/') as $file) { |
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$this->components[$file->name] = $file->uri; |
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} |
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if ($this->twigConfig['cache']) { |
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$this->cacheBackend->set($path, $this->components); |
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} |
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return $this->components; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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protected function findTemplate($name) { |
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if (is_null($this->components)) { |
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// Scan the directory for any twig files and register them. |
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// TODO: inherit components from base theme |
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// TODO: configurable components directory |
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$this->components = $this->listComponents($this->themeManager->getActiveTheme()->getPath() . '/components'); |
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} |
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if ($name[0] === '#') { |
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$component = substr($name, 1); |
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if (array_key_exists($component, $this->components)) { |
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return $this->components[$component]; |
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} |
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} |
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return FALSE; |
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} |
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} |
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drupal-graphql /
graphql-twig
