interface LocalTaskInterface

interface LocalTaskInterface {
    
    /**
     * Get the route name from the settings.
     *
     * @return string
     *   The name of the route this local task links to.
     */
    public function getRouteName();
    
    /**
     * Returns the localized title to be shown for this tab.
     *
     * Subclasses may add optional arguments like NodeInterface $node = NULL that
     * will be supplied by the ControllerResolver.
     *
     * @return string
     *   The title of the local task.
     */
    public function getTitle();
    
    /**
     * Returns the route parameters needed to render a link for the local task.
     *
     * @param \Drupal\Core\Routing\RouteMatchInterface $route_match
     *   The current route match.
     *
     * @return array
     *   An array of parameter names and values.
     */
    public function getRouteParameters(RouteMatchInterface $route_match);
    
    /**
     * Returns the weight of the local task.
     *
     * @return int|null
     *   The weight of the task or NULL.
     */
    public function getWeight();
    
    /**
     * Returns options for rendering a link to the local task.
     *
     * @param \Drupal\Core\Routing\RouteMatchInterface $route_match
     *   The current route match.
     *
     * @return array
     *   An associative array of options.
     */
    public function getOptions(RouteMatchInterface $route_match);
    
    /**
     * Sets the active status.
     *
     * @param bool $active
     *   Sets whether this tab is active (e.g. a parent of the current tab).
     *
     * @return $this
     *   The called object for chaining.
     */
    public function setActive($active = TRUE);
    
    /**
     * Gets the active status.
     *
     * @return bool
     *   TRUE if the local task is active, FALSE otherwise.
     *
     * @see \Drupal\system\Plugin\MenuLocalTaskInterface::setActive()
     */
    public function getActive();

}