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[yaffs-website] / web / core / modules / workflows / src / Transition.php
diff --git a/web/core/modules/workflows/src/Transition.php b/web/core/modules/workflows/src/Transition.php
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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;
+  }
+
+}