ContextRepository.php

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<?php namespace ILIAS\GlobalScreen\ScreenContext;

use ILIAS\Data\ReferenceId;

class ContextRepository
{

    private $contexts = [];
    const C_MAIN = 'main';
    const C_DESKTOP = 'desktop';
    const C_REPO = 'repo';
    const C_ADMINISTRATION = 'administration';
    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 $identifier)
    {
        if (!isset($this->contexts[$identifier])) {
            $this->contexts[$identifier] = new $class_name($identifier);
        }

        return $this->contexts[$identifier];
    }
}