Implement unique IDs for settings.

zaaReloaded2/Controller/Settings.cs

@@ -47,6 +47,12 @@ namespace zaaReloaded2.Controller
         /// </summary>
         public IList<ElementBase> Elements { get; private set; }
 
+        /// <summary>
+        /// Gets the unique ID of this Settings object. The unique
+        /// ID is not included in deep-copying (cloning).
+        /// </summary>
+        public Guid Uid { get; private set; }
+
         #endregion
 
         #region Constructors
@@ -54,6 +60,7 @@ namespace zaaReloaded2.Controller
         public Settings()
         {
             Elements = new List<ElementBase>();
+            Uid = Guid.NewGuid();
         }
 
         public Settings(string name)

zaaReloaded2/Controller/SettingsRepository.cs

@@ -76,6 +76,21 @@ namespace zaaReloaded2.Controller
 
         #endregion
 
+        #region Public methods
+
+        /// <summary>
+        /// Looks up a Settings object contained in this repository
+        /// by unique ID.
+        /// </summary>
+        /// <param name="uid">GUID to look for.</param>
+        /// <returns>Settings object with this GUID, or null if the
+        /// GUID was not found.</returns>
+        public Settings FindByGuid(Guid uid)
+        {
+            return SettingsList.FirstOrDefault(s => s.Uid == uid);
+        }
+        #endregion
+
         #region Private methods
 
         /// <summary>