class.ilUIPluginRouterGUI.php

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<?php
 
class ilUIPluginRouterGUI implements ilCtrlBaseClassInterface
{
    protected ilCtrl $ctrl;
    private \ilGlobalTemplateInterface $main_tpl;
 
    public function __construct()
    {
        global $DIC;
        $this->main_tpl = $DIC->ui()->mainTemplate();
        $this->ctrl = $DIC->ctrl();
    }
 
    public function executeCommand(): void
    {
        $next_class = $this->ctrl->getNextClass($this);
        switch ($next_class) {
            default:
                $class_file = '../' . ltrim($this->ctrl->lookupClassPath($next_class), './');
                if (is_file($class_file)) {
                    include_once($class_file);
                    $gui = new $next_class();
                    $this->ctrl->forwardCommand($gui);
                } else {
                    $this->main_tpl->setOnScreenMessage('failure', 'Plugin GUI-Class not found! (' . $next_class . ')');
                }
                break;
        }
    }
}