NIHVIVO-646 Move custom form utilities to a separate js file and add utility mixin methods to mix them in to specific custom forms. Make paths to css and js files in formPrefix.jsp and formSuffix.jsp absolute instead of relative.

webapp/web/js/utils.js

@@ -0,0 +1,35 @@
+/* $This file is distributed under the terms of the license in /doc/license.txt$ */
+
+var vitro;
+if (!vitro) {
+	vitro = {};
+}
+/* From "JavaScript: The Definitive Guide," 5th edition, by David Flanagan
+ * Copyright 2006 O'Reilly Media, Inc.
+ * ISBN 978-0-596-10199-2
+ */
+
+vitro.utils = {
+
+	// Borrow methods from one class for use by another.
+	// The arguments should be the constructor functions for the classes.
+	// Methods of built-in types such as Object, Array, Date, and RegExp are
+	// not enumerable and cannot be borrowed from with this method.
+	borrowPrototypeMethods: function(borrowFrom, addTo) {
+		var from = borrowFrom.prototype; // prototype object to borrow from
+		var to = addTo.prototype;        // prototype object to extend
+		
+		for (m in from) { // loop through all properties of the prototype
+			if (typeof from[m] != "function") { continue; } // ignore non-functions
+			to[m] = from[m];
+		}
+	},
+	
+	borrowMethods: function(borrowFrom, addTo) {
+		for (m in borrowFrom) { // loop through all properties of the prototype
+			if (typeof borrowFrom[m] != "function") { continue; } // ignore non-functions
+			addTo[m] = borrowFrom[m];
+		}
+	}
+
+};