ContextRepository.php

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<?php
 
declare(strict_types=1);
namespace ILIAS\GlobalScreen\ScreenContext;
 
use ILIAS\Data\ReferenceId;
 
class ContextRepository
{
    private $contexts = [];
    private const C_MAIN = 'main';
    private const C_DESKTOP = 'desktop';
    private const C_REPO = 'repo';
    private const C_ADMINISTRATION = 'administration';
    private const C_LTI = 'lti';
 
 
    public function main() : ScreenContext
    {
        return $this->get(BasicScreenContext::class, self::C_MAIN);
    }
 
    public function internal() : ScreenContext
    {
        return $this->get(BasicScreenContext::class, 'internal');
    }
 
    public function external() : ScreenContext
    {
        return $this->get(BasicScreenContext::class, 'external');
    }
 
    public function desktop() : ScreenContext
    {
        return $this->get(BasicScreenContext::class, self::C_DESKTOP);
    }
 
    public function repository() : ScreenContext
    {
        $context = $this->get(BasicScreenContext::class, self::C_REPO);
        $context = $context->withReferenceId(new ReferenceId((int) ($_GET['ref_id'] ?? 0)));
 
        return $context;
    }
 
    public function administration() : ScreenContext
    {
        return $this->get(BasicScreenContext::class, self::C_ADMINISTRATION);
    }
 
    public function lti() : ScreenContext
    {
        return $this->get(BasicScreenContext::class, self::C_LTI);
    }
 
    private function get(string $class_name, string $identifier) : ScreenContext
    {
        if (!isset($this->contexts[$identifier])) {
            $this->contexts[$identifier] = new $class_name($identifier);
        }
 
        return $this->contexts[$identifier];
    }
}