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<?php
namespace Drupal\workflows;
use Drupal\Core\Config\Entity\ConfigEntityInterface;
/**
* Provides an interface for defining workflow entities.
*
* @internal
* The workflow system is currently experimental and should only be leveraged
* by experimental modules and development releases of contributed modules.
*/
interface WorkflowInterface extends ConfigEntityInterface {
/**
* Adds a state to the workflow.
*
* @param string $state_id
* The state's ID.
* @param string $label
* The state's label.
*
* @return \Drupal\workflows\WorkflowInterface
* The workflow entity.
*/
public function addState($state_id, $label);
/**
* Determines if the workflow has a state with the provided ID.
*
* @param string $state_id
* The state's ID.
*
* @return bool
* TRUE if the workflow has a state with the provided ID, FALSE if not.
*/
public function hasState($state_id);
/**
* Gets state objects for the provided state IDs.
*
* @param string[] $state_ids
* A list of state IDs to get. If NULL then all states will be returned.
*
* @return \Drupal\workflows\StateInterface[]
* An array of workflow states.
*
* @throws \InvalidArgumentException
* Thrown if $state_ids contains a state ID that does not exist.
*/
public function getStates($state_ids = NULL);
/**
* Gets a workflow state.
*
* @param string $state_id
* The state's ID.
*
* @return \Drupal\workflows\StateInterface
* The workflow state.
*
* @throws \InvalidArgumentException
* Thrown if $state_id does not exist.
*/
public function getState($state_id);
/**
* Sets a state's label.
*
* @param string $state_id
* The state ID to set the label for.
* @param string $label
* The state's label.
*
* @return \Drupal\workflows\WorkflowInterface
* The workflow entity.
*/
public function setStateLabel($state_id, $label);
/**
* Sets a state's weight value.
*
* @param string $state_id
* The state ID to set the weight for.
* @param int $weight
* The state's weight.
*
* @return \Drupal\workflows\WorkflowInterface
* The workflow entity.
*/
public function setStateWeight($state_id, $weight);
/**
* Deletes a state from the workflow.
*
* @param string $state_id
* The state ID to delete.
*
* @return \Drupal\workflows\WorkflowInterface
* The workflow entity.
*
* @throws \InvalidArgumentException
* Thrown if $state_id does not exist.
*/
public function deleteState($state_id);
/**
* Gets the initial state for the workflow.
*
* @return \Drupal\workflows\StateInterface
* The initial state.
*/
public function getInitialState();
/**
* Adds a transition to the workflow.
*
* @param string $id
* The transition ID.
* @param string $label
* The transition's label.
* @param array $from_state_ids
* The state IDs to transition from.
* @param string $to_state_id
* The state ID to transition to.
*
* @return \Drupal\workflows\WorkflowInterface
* The workflow entity.
*
* @throws \InvalidArgumentException
* Thrown if either state does not exist.
*/
public function addTransition($id, $label, array $from_state_ids, $to_state_id);
/**
* Gets a transition object for the provided transition ID.
*
* @param string $transition_id
* A transition ID.
*
* @return \Drupal\workflows\TransitionInterface
* The transition.
*
* @throws \InvalidArgumentException
* Thrown if $transition_id does not exist.
*/
public function getTransition($transition_id);
/**
* Determines if a transition exists.
*
* @param string $transition_id
* The transition ID.
*
* @return bool
* TRUE if the transition exists, FALSE if not.
*/
public function hasTransition($transition_id);
/**
* Gets transition objects for the provided transition IDs.
*
* @param string[] $transition_ids
* A list of transition IDs to get. If NULL then all transitions will be
* returned.
*
* @return \Drupal\workflows\TransitionInterface[]
* An array of transition objects.
*
* @throws \InvalidArgumentException
* Thrown if $transition_ids contains a transition ID that does not exist.
*/
public function getTransitions(array $transition_ids = NULL);
/**
* Gets the transition IDs for a state for the provided direction.
*
* @param $state_id
* The state to get transitions for.
* @param string $direction
* (optional) The direction of the transition. Defaults to 'from'. Possible
* values are: 'from' and 'to'.
*
* @return array
* The transition IDs for a state for the provided direction.
*/
public function getTransitionsForState($state_id, $direction = 'from');
/**
* Gets a transition from state to state.
*
* @param string $from_state_id
* The state ID to transition from.
* @param string $to_state_id
* The state ID to transition to.
*
* @return \Drupal\workflows\TransitionInterface
* The transitions.
*
* @throws \InvalidArgumentException
* Thrown if the transition does not exist.
*/
public function getTransitionFromStateToState($from_state_id, $to_state_id);
/**
* Determines if a transition from state to state exists.
*
* @param string $from_state_id
* The state ID to transition from.
* @param string $to_state_id
* The state ID to transition to.
*
* @return bool
* TRUE if the transition exists, FALSE if not.
*/
public function hasTransitionFromStateToState($from_state_id, $to_state_id);
/**
* Sets a transition's label.
*
* @param string $transition_id
* The transition ID.
* @param string $label
* The transition's label.
*
* @return \Drupal\workflows\WorkflowInterface
* The workflow entity.
*
* @throws \InvalidArgumentException
* Thrown if the transition does not exist.
*/
public function setTransitionLabel($transition_id, $label);
/**
* Sets a transition's weight.
*
* @param string $transition_id
* The transition ID.
* @param int $weight
* The transition's weight.
*
* @return \Drupal\workflows\WorkflowInterface
* The workflow entity.
*
* @throws \InvalidArgumentException
* Thrown if the transition does not exist.
*/
public function setTransitionWeight($transition_id, $weight);
/**
* Sets a transition's from states.
*
* @param string $transition_id
* The transition ID.
* @param array $from_state_ids
* The state IDs to transition from.
*
* @return \Drupal\workflows\WorkflowInterface
* The workflow entity.
*
* @throws \InvalidArgumentException
* Thrown if the transition does not exist or the states do not exist.
*/
public function setTransitionFromStates($transition_id, array $from_state_ids);
/**
* Deletes a transition.
*
* @param string $transition_id
* The transition ID.
*
* @return \Drupal\workflows\WorkflowInterface
* The workflow entity.
*
* @throws \InvalidArgumentException
* Thrown if the transition does not exist.
*/
public function deleteTransition($transition_id);
/**
* Gets the workflow type plugin.
*
* @return \Drupal\workflows\WorkflowTypeInterface
* The workflow type plugin.
*/
public function getTypePlugin();
}