[W8.6b][W11-B4] Loh Cai Jun

src/seedu/addressbook/data/tag/Tagging.java

@@ -0,0 +1,59 @@
+package seedu.addressbook.data.tag;
+
+import seedu.addressbook.data.person.Person;
+
+import java.util.ArrayList;
+
+/**
+ * Represents an adding or deleting of a tag for a specific {@code Person} that happened during a session
+ */
+public class Tagging {
+
+    private static ArrayList<Tagging> taggings;
+
+    public enum ACTION {
+        ADDED, DELETED
+    }
+
+    private final Person person;
+    private final Tag tag;
+    private final ACTION action;
+
+    /**
+     * @param person person whose tag was changed
+     * @param tag tag that was changed
+     * @param action type of action
+     */
+    public Tagging(Person person, Tag tag, ACTION action) {
+        this.person = person;
+        this.tag = tag;
+        this.action = action;
+        addTagging(this);
+    }
+
+    /**
+     * Adds tagging to class-level variable that stores all taggings during a session
+     */
+    public static void addTagging(Tagging tagging) {
+        taggings.add(tagging);
+    }
+
+    /**
+     * Returns all Taggings which represent all changes made to tags during a session
+     */
+    public static ArrayList<Tagging> getTaggings() {
+        return taggings;
+    }
+
+    public Person getPerson() {
+        return person;
+    }
+
+    public Tag getTag() {
+        return tag;
+    }
+
+    public ACTION getAction() {
+        return action;
+    }
+}