Define Base.initialize() as a general purpose way to initialize a newly created object with values from a provided object and default values from another, in case they are not provided.

src/core/Base.js

@@ -43,6 +43,14 @@ Base.inject({
 		return res;
 	},
 
+	initialize: function(object, values, defaults) {
+		if (!values)
+			values = defaults;
+		return Base.each(defaults, function(value, key) {
+			this[key] = values[key] || value;
+		}, object);
+	},
+
 	/**
 	 * Utility function for adding and removing items from a list of which
 	 * each entry keeps a reference to its index in the list in the private