class ConfigTranslationBlockListBuilder

class ConfigTranslationBlockListBuilder extends ConfigTranslationEntityListBuilder {
    
    /**
     * An array of theme info keyed by theme name.
     *
     * @var array
     */
    protected $themes = [];
    
    /**
     * {@inheritdoc}
     */
    public function __construct(EntityTypeInterface $entity_type, EntityStorageInterface $storage, ThemeHandlerInterface $theme_handler) {
        parent::__construct($entity_type, $storage);
        $this->themes = $theme_handler->listInfo();
    }
    
    /**
     * {@inheritdoc}
     */
    public static function createInstance(ContainerInterface $container, EntityTypeInterface $entity_type) {
        return new static($entity_type, $container->get('entity_type.manager')
            ->getStorage($entity_type->id()), $container->get('theme_handler'));
    }
    
    /**
     * {@inheritdoc}
     */
    public function getFilterLabels() {
        $info = parent::getFilterLabels();
        $info['placeholder'] = $this->t('Enter block, theme or category');
        $info['description'] = $this->t('Enter a part of the block, theme or category to filter by.');
        return $info;
    }
    
    /**
     * {@inheritdoc}
     */
    public function buildRow(EntityInterface $entity) {
        $theme = $entity->getTheme();
        $plugin_definition = $entity->getPlugin()
            ->getPluginDefinition();
        $row['label'] = [
            'data' => $entity->label(),
            'class' => 'table-filter-text-source',
        ];
        $row['theme'] = [
            'data' => $this->themes[$theme]->info['name'],
            'class' => 'table-filter-text-source',
        ];
        $row['category'] = [
            'data' => $plugin_definition['category'],
            'class' => 'table-filter-text-source',
        ];
        $row['operations']['data'] = $this->buildOperations($entity);
        return $row;
    }
    
    /**
     * {@inheritdoc}
     */
    public function buildHeader() {
        $header['label'] = $this->t('Block');
        $header['theme'] = $this->t('Theme');
        $header['category'] = $this->t('Category');
        $header['operations'] = $this->t('Operations');
        return $header;
    }
    
    /**
     * {@inheritdoc}
     */
    public function sortRows($a, $b) {
        return $this->sortRowsMultiple($a, $b, [
            'theme',
            'category',
            'label',
        ]);
    }

}