interface StateInterface in Drupal 8

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.

Hierarchy

• interface \Drupal\workflows\StateInterface

8 files declare their use of StateInterface

ContentModeration.php in core/modules/content_moderation/src/Plugin/WorkflowType/ContentModeration.php

ContentModerationState.php in core/modules/content_moderation/src/ContentModerationState.php

ContentModerationStateForm.php in core/modules/content_moderation/src/Form/ContentModerationStateForm.php

StateTransitionValidation.php in core/modules/content_moderation/src/StateTransitionValidation.php

StateTransitionValidationInterface.php in core/modules/content_moderation/src/StateTransitionValidationInterface.php

... See full list

File

core/modules/workflows/src/StateInterface.php, line 12

Namespace

Drupal\workflows

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();

}

Members

Name	Modifiers	Type	Description	Overrides
StateInterface::canTransitionTo	public	function	Determines if the state can transition to the provided state ID.	2
StateInterface::getTransitions	public	function	Gets all the possible transition objects for the state.	2
StateInterface::getTransitionTo	public	function	Gets the Transition object for the provided state ID.	2
StateInterface::id	public	function	Gets the state's ID.	2
StateInterface::label	public	function	Gets the state's label.	2
StateInterface::PLUGIN_FORM_KEY		constant	The key of the state plugin form.
StateInterface::weight	public	function	Gets the state's weight.	2