PHP7 Memento

Behavioral/Memento/Ticket.php

@@ -0,0 +1,49 @@
+<?php
+
+namespace DesignPatterns\Behavioral\Memento;
+
+/**
+ * Ticket is the "Originator" in this implementation
+ */
+class Ticket
+{
+    /**
+     * @var State
+     */
+    private $currentState;
+
+    public function __construct()
+    {
+        $this->currentState = new State(State::STATE_CREATED);
+    }
+
+    public function open()
+    {
+        $this->currentState = new State(State::STATE_OPENED);
+    }
+
+    public function assign()
+    {
+        $this->currentState = new State(State::STATE_ASSIGNED);
+    }
+
+    public function close()
+    {
+        $this->currentState = new State(State::STATE_CLOSED);
+    }
+
+    public function saveToMemento(): Memento
+    {
+        return new Memento(clone $this->currentState);
+    }
+
+    public function restoreFromMemento(Memento $memento)
+    {
+        $this->currentState = $memento->getState();
+    }
+
+    public function getState(): State
+    {
+        return $this->currentState;
+    }
+}