_config        = Dispatcher::config();
		$this->_config_master = Dispatcher::config_master();
		$this->_page          = Util_Admin::get_current_page();
	}
	/**
	 * Render header.
	 */
	public function options() {
		$this->view();
	}
	/**
	 * Render footer.
	 */
	public function render_footer() {
		include W3TC_INC_OPTIONS_DIR . '/common/footer.php';
	}
	/**
	 * Returns true if config section is sealed.
	 *
	 * @param string $section Config section.
	 *
	 * @return boolean
	 */
	protected function is_sealed( $section ) {
		return true;
	}
	/**
	 * Returns true if we edit master config.
	 *
	 * @return boolean
	 */
	protected function is_master() {
		return $this->_config->is_master();
	}
	/**
	 * Prints checkbox with config option value.
	 *
	 * @param string $option_id    Option ID.
	 * @param bool   $disabled     Disabled flag.
	 * @param string $class_prefix Class prefix.
	 * @param bool   $label        Label.
	 * @param bool   $force_value  Override value.
	 */
	protected function checkbox( $option_id, $disabled = false, $class_prefix = '', $label = true, $force_value = null ) {
		$disabled = $disabled || $this->_config->is_sealed( $option_id );
		$name     = Util_Ui::config_key_to_http_name( $option_id );
		if ( ! $disabled ) {
			echo '';
		}
		if ( $label ) {
			echo '