StateInterface.php

Same filename in this branch
  1. 9 core/lib/Drupal/Core/State/StateInterface.php
Same filename in other branches
  1. 8.9.x core/modules/workflows/src/StateInterface.php
  2. 8.9.x core/lib/Drupal/Core/State/StateInterface.php
  3. 10 core/modules/workflows/src/StateInterface.php
  4. 10 core/lib/Drupal/Core/State/StateInterface.php
  5. 11.x core/modules/workflows/src/StateInterface.php
  6. 11.x core/lib/Drupal/Core/State/StateInterface.php

Namespace

Drupal\workflows

File

core/modules/workflows/src/StateInterface.php

View source
<?php

namespace Drupal\workflows;


/**
 * An interface for state value objects.
 *
 * @internal
 *   The StateInterface should only be used by Workflows and Content Moderation.
 * @todo Revisit the need for this in https://www.drupal.org/node/2902309.
 */
interface StateInterface {
    
    /**
     * The key of the state plugin form.
     */
    const PLUGIN_FORM_KEY = 'state';
    
    /**
     * Gets the state's ID.
     *
     * @return string
     *   The state's ID.
     */
    public function id();
    
    /**
     * Gets the state's label.
     *
     * @return string
     *   The state's label.
     */
    public function label();
    
    /**
     * Gets the state's weight.
     *
     * @return int
     *   The state's weight.
     */
    public function weight();
    
    /**
     * Determines if the state can transition to the provided state ID.
     *
     * @param $to_state_id
     *   The state to transition to.
     *
     * @return bool
     *   TRUE if the state can transition to the provided state ID. FALSE, if not.
     */
    public function canTransitionTo($to_state_id);
    
    /**
     * Gets the Transition object for the provided state ID.
     *
     * @param $to_state_id
     *   The state to transition to.
     *
     * @return \Drupal\workflows\TransitionInterface
     *   The Transition object for the provided state ID.
     *
     * @throws \InvalidArgumentException()
     *   Exception thrown when the provided state ID can not be transitioned to.
     */
    public function getTransitionTo($to_state_id);
    
    /**
     * Gets all the possible transition objects for the state.
     *
     * @return \Drupal\workflows\TransitionInterface[]
     *   All the possible transition objects for the state.
     */
    public function getTransitions();

}

Interfaces

Title Deprecated Summary
StateInterface An interface for state value objects.

Buggy or inaccurate documentation? Please file an issue. Need support? Need help programming? Connect with the Drupal community.