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<?php
namespace Drupal\workflows;
/**
* A transition value object that describes the transition between states.
*
* @internal
* The workflow system is currently experimental and should only be leveraged
* by experimental modules and development releases of contributed modules.
*/
class Transition implements TransitionInterface {
/**
* The workflow that this transition is attached to.
*
* @var \Drupal\workflows\WorkflowInterface
*/
protected $workflow;
/**
* The transition's ID.
*
* @var string
*/
protected $id;
/**
* The transition's label.
*
* @var string
*/
protected $label;
/**
* The transition's from state IDs.
*
* @var string[]
*/
protected $fromStateIds;
/**
* The transition's to state ID.
*
* @var string
*/
protected $toStateId;
/**
* The transition's weight.
*
* @var int
*/
protected $weight;
/**
* Transition constructor.
*
* @param \Drupal\workflows\WorkflowInterface $workflow
* The workflow the state is attached to.
* @param string $id
* The transition's ID.
* @param string $label
* The transition's label.
* @param array $from_state_ids
* A list of from state IDs.
* @param string $to_state_id
* The to state ID.
* @param int $weight
* (optional) The transition's weight. Defaults to 0.
*/
public function __construct(WorkflowInterface $workflow, $id, $label, array $from_state_ids, $to_state_id, $weight = 0) {
$this->workflow = $workflow;
$this->id = $id;
$this->label = $label;
$this->fromStateIds = $from_state_ids;
$this->toStateId = $to_state_id;
$this->weight = $weight;
}
/**
* {@inheritdoc}
*/
public function id() {
return $this->id;
}
/**
* {@inheritdoc}
*/
public function label() {
return $this->label;
}
/**
* {@inheritdoc}
*/
public function from() {
return $this->workflow->getStates($this->fromStateIds);
}
/**
* {@inheritdoc}
*/
public function to() {
return $this->workflow->getState($this->toStateId);
}
/**
* {@inheritdoc}
*/
public function weight() {
return $this->weight;
}
}