class.ilComponentFactoryImplementation.php

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<?php
declare(strict_types=1);

class ilComponentFactoryImplementation implements ilComponentFactory
{
    protected \ilComponentRepositoryWrite $component_repository;
    protected \ilDBInterface $db;

    protected array $plugins = [];

    public function __construct(
        \ilComponentRepositoryWrite $component_repository,

        // These are only required to pass on to the created objects.
        \ilDBInterface $db
    ) {
        $this->component_repository = $component_repository;

        // These are only required to pass on to the created objects.
        $this->db = $db;
    }

    public function getPlugin(string $id): ilPlugin
    {
        if (!isset($this->plugins[$id])) {
            $plugin_info = $this->component_repository->getPluginById($id);
            $class_name = $plugin_info->getClassName();
            $plugin = new $class_name($this->db, $this->component_repository, $id);
            $this->plugins[$id] = $plugin;
        }

        return $this->plugins[$id];
    }

    public function getActivePluginsInSlot(string $slot_id): Generator
    {
        $ps = $this->component_repository->getPluginSlotById($slot_id)->getActivePlugins();
        foreach ($ps as $p) {
            yield $this->getPlugin($p->getId());
        }
    }
}