rmrevin / yii2-fontawesome

     * @return \rmrevin\yii\fontawesome\component\Icon

     * @throws \yii\base\InvalidConfigException

     */

    public function rotate($value)

    {

        $values = [FontAwesome::ROTATE_90, FontAwesome::ROTATE_180, FontAwesome::ROTATE_270];

        return $this->addCssClass(

            FontAwesome::$basePrefix . '-rotate-' . $value,

            in_array((string)$value, $values, true),

            sprintf(

                '%s - invalid value. Use one of the constants: %s.',

                'FontAwesome::rotate()',

                implode(', ', $values)

            )

        );

    }

    /**

     * @param string $value

     * @return \rmrevin\yii\fontawesome\component\Icon

     * @throws \yii\base\InvalidConfigException

     */

    public function flip($value)

    {

        $values = [FontAwesome::FLIP_HORIZONTAL, FontAwesome::FLIP_VERTICAL];

        return $this->addCssClass(

            FontAwesome::$basePrefix . '-flip-' . $value,

            in_array((string)$value, [FontAwesome::FLIP_HORIZONTAL, FontAwesome::FLIP_VERTICAL], true),

            sprintf(

                '%s - invalid value. Use one of the constants: %s.',

                'FontAwesome::flip()',

                implode(', ', $values)

            )

        );

    }

    /**

     * @param string $class