Added definition for SC.UserDefaultsDelegate

frameworks/foundation/delegates/user_defaults.js

@@ -0,0 +1,47 @@
+// ==========================================================================
+// Project:   SproutCore - JavaScript Application Framework
+// Copyright: ©2017 Turnitin. All rights reserved.
+// License:   Licensed under MIT license (see license.js)
+// ==========================================================================
+
+/**
+  @namespace
+
+  This defines the UserDefaultsDelegate, used to be notified when a default
+  is required or an error occurs.
+
+  @since SproutCore 1.11.2
+*/
+SC.UserDefaultsDelegate = /** @scope SC.UserDefaultsDelegate */{
+
+  /**
+    Called when a value is needed for a user default.
+    @param {SC.UserDefaults} userDefaults
+    @param {String} keyName
+    @param {String} userKeyName
+    @returns {Object} default for then given key
+  */
+  userDefaultsNeedsDefault: function(userDefaults, keyName, userKeyName) {},
+
+  /**
+    Called when a default's value is changed.
+    @param {SC.UserDefaults} userDefaults
+    @param {String} keyName
+    @param {Object} value
+    @param {String} userKeyName
+    @returns {void}
+  */
+  userDefaultsDidChange: function(userDefaults, keyName, value, userKeyName) {},
+
+  /**
+    Called when an error occurs.
+    @param {SC.UserDefaults} userDefaults
+    @param {String} keyName
+    @param {Object} value
+    @param {String} userKeyName
+    @param {SC.Error} error
+    @returns {void}
+  */
+  userDefaultsDidError: function(userDefaults, keyName, value, userKeyName, error) {}
+
+};