MenuContentObjectFactory.php

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<?php
namespace TYPO3\CMS\Frontend\ContentObject\Menu;

class MenuContentObjectFactory implements \TYPO3\CMS\Core\SingletonInterface {

    protected $menuTypeToClassMapping = array(
        'GMENU' => 'TYPO3\\CMS\\Frontend\\ContentObject\\Menu\\GraphicalMenuContentObject',
        'TMENU' => 'TYPO3\\CMS\\Frontend\\ContentObject\\Menu\\TextMenuContentObject',
        'IMGMENU' => 'TYPO3\\CMS\\Frontend\\ContentObject\\Menu\\ImageMenuContentObject',
        'JSMENU' => 'TYPO3\\CMS\\Frontend\\ContentObject\\Menu\\JavaScriptMenuContentObject',
    );

    public function getMenuObjectByType($type = '') {
        $uppercasedClassname = strtoupper($type);
        if (array_key_exists($uppercasedClassname, $this->menuTypeToClassMapping)) {
            $object = \TYPO3\CMS\Core\Utility\GeneralUtility::makeInstance($this->menuTypeToClassMapping[$uppercasedClassname]);
        } else {
            throw new Exception\NoSuchMenuTypeException(
                'Menu type ' . (string)$type . ' has no implementing class.',
                1363278130
            );
        }
        return $object;
    }

    public function registerMenuType($type, $className) {
        if (!is_string($type) || !is_string($className)) {
            throw new \InvalidArgumentException(
                'type and className must be strings',
                1363429303
            );
        }
        $this->menuTypeToClassMapping[strtoupper($type)] = $className;
    }
}