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/**
 * _config.php Object::add_extension('AssetTableField','AssetTableFieldExtension');
 * Object::has_extension('AssetTableField',"AssetTableFieldExtension"); // returns true
 * AssetTableField::hasMethod('requirementsForPopupCallback'); // returns true
 */
class AssetTableFieldExtension extends Extension{

        public $requirementsForPopupCallback = 'test';

        function __construct(){
                parent::__construct();

                $this->requirementsForPopupCallback();
                $this->requirementsForPopupCallback = 'test';
                $this->owner->requirementsForPopupCallback = 'test';
        }

        function init(){
                parent::init();

                $this->requirementsForPopupCallback();
                $this->requirementsForPopupCallback = 'test';
                $this->owner->requirementsForPopupCallback = 'test';
        }

        function requirementsForPopupCallback(){
                Requirements::block(THIRDPARTY_DIR . '/tabstrip/tabstrip.css');
                Requirements::css(ADMINTHEME_DIR . '/'.AdminDecorator::$theme.'/tabstrip/tabstrip.css');
        }

        function test(){
                Requirements::block(THIRDPARTY_DIR . '/tabstrip/tabstrip.css');
                Requirements::css(ADMINTHEME_DIR . '/'.AdminDecorator::$theme.'/tabstrip/tabstrip.css');