class.ilLTIRouterGUI.php

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<?php

class ilLTIRouterGUI
{

    protected $ilCtrl;

    public function __construct()
    {
        global $ilCtrl;
        $this->ilCtrl = $ilCtrl;
    }

    public function executeCommand()
    {
        $next_class = $this->ilCtrl->getNextClass($this);
        $class_file = $this->ilCtrl->lookupClassPath($next_class);
        
        if (is_file($class_file)) {
            include_once($class_file);
            $gui = $next_class::getInstance(); // Singleton!
            $this->ilCtrl->forwardCommand($gui);
        } else {
            ilUtil::sendFailure('GUI-Class not found! (' . $next_class . ')');
        }
    }
}