diff core/modules/workflows/src/State.php @ 0:4c8ae668cc8c

Initial import (non-working)

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/core/modules/workflows/src/State.php	Wed Nov 29 16:09:58 2017 +0000
@@ -0,0 +1,114 @@
+<?php
+
+namespace Drupal\workflows;
+
+/**
+ * A value object representing a workflow state.
+ */
+class State implements StateInterface {
+
+  /**
+   * The workflow the state is attached to.
+   *
+   * @var \Drupal\workflows\WorkflowInterface
+   */
+  protected $workflow;
+
+  /**
+   * The state's ID.
+   *
+   * @var string
+   */
+  protected $id;
+
+  /**
+   * The state's label.
+   *
+   * @var string
+   */
+  protected $label;
+
+  /**
+   * The state's weight.
+   *
+   * @var int
+   */
+  protected $weight;
+
+  /**
+   * State constructor.
+   *
+   * @param \Drupal\workflows\WorkflowInterface $workflow
+   *   The workflow the state is attached to.
+   * @param string $id
+   *   The state's ID.
+   * @param string $label
+   *   The state's label.
+   * @param int $weight
+   *   The state's weight.
+   */
+  public function __construct(WorkflowTypeInterface $workflow, $id, $label, $weight = 0) {
+    $this->workflow = $workflow;
+    $this->id = $id;
+    $this->label = $label;
+    $this->weight = $weight;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function id() {
+    return $this->id;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function label() {
+    return $this->label;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function weight() {
+    return $this->weight;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function canTransitionTo($to_state_id) {
+    return $this->workflow->hasTransitionFromStateToState($this->id, $to_state_id);
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getTransitionTo($to_state_id) {
+    if (!$this->canTransitionTo($to_state_id)) {
+      throw new \InvalidArgumentException("Can not transition to '$to_state_id' state");
+    }
+    return $this->workflow->getTransitionFromStateToState($this->id(), $to_state_id);
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getTransitions() {
+    return $this->workflow->getTransitionsForState($this->id);
+  }
+
+  /**
+   * Helper method to convert a State value object to a label.
+   *
+   * @param \Drupal\workflows\StateInterface $state
+   *
+   * @return string
+   *   The label of the state.
+   */
+  public static function labelCallback(StateInterface $state) {
+    return $state->label();
+  }
+
+}