WB 2.08.x

    protected $defaultStrategy;

    public function __construct($defaultStrategy = 'html')

        $this->setDefaultStrategy($defaultStrategy);

    /**

     * Sets the default strategy to use when not defined by the user.

     *

     * The strategy can be a valid PHP callback that takes the template

     * "filename" as an argument and returns the strategy to use.

     *

     * @param mixed $defaultStrategy An escaping strategy

     */

    public function setDefaultStrategy($defaultStrategy)

        // for BC

        if (true === $defaultStrategy) {

            $defaultStrategy = 'html';

        }

        $this->defaultStrategy = $defaultStrategy;

     * Gets the default strategy to use when not defined by the user.

     *

     * @param string $filename The template "filename"

     *

     * @return string The default strategy to use for the template

     */

    public function getDefaultStrategy($filename)

    {

        // disable string callables to avoid calling a function named html or js,

        // or any other upcoming escaping strategy

        if (!is_string($this->defaultStrategy) && is_callable($this->defaultStrategy)) {

            return call_user_func($this->defaultStrategy, $filename);

        }

        return $this->defaultStrategy;

    }

    /**