interface OutputFormatterInterface

interface OutputFormatterInterface {
    
    /**
     * Sets the decorated flag.
     */
    public function setDecorated(bool $decorated) : void;
    
    /**
     * Whether the output will decorate messages.
     */
    public function isDecorated() : bool;
    
    /**
     * Sets a new style.
     */
    public function setStyle(string $name, OutputFormatterStyleInterface $style) : void;
    
    /**
     * Checks if output formatter has style with specified name.
     */
    public function hasStyle(string $name) : bool;
    
    /**
     * Gets style options from style with specified name.
     *
     * @throws \InvalidArgumentException When style isn't defined
     */
    public function getStyle(string $name) : OutputFormatterStyleInterface;
    
    /**
     * Formats a message according to the given styles.
     */
    public function format(?string $message) : ?string;

}