--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/vakata-jstree-3.3.5/src/jstree.conditionalselect.js	Sun Dec 30 12:55:49 2018 -0500
@@ -0,0 +1,38 @@
+/**
+ * ### Conditionalselect plugin
+ *
+ * This plugin allows defining a callback to allow or deny node selection by user input (activate node method).
+ */
+/*globals jQuery, define, exports, require, document */
+(function (factory) {
+	"use strict";
+	if (typeof define === 'function' && define.amd) {
+		define('jstree.conditionalselect', ['jquery','jstree'], factory);
+	}
+	else if(typeof exports === 'object') {
+		factory(require('jquery'), require('jstree'));
+	}
+	else {
+		factory(jQuery, jQuery.jstree);
+	}
+}(function ($, jstree, undefined) {
+	"use strict";
+
+	if($.jstree.plugins.conditionalselect) { return; }
+
+	/**
+	 * a callback (function) which is invoked in the instance's scope and receives two arguments - the node and the event that triggered the `activate_node` call. Returning false prevents working with the node, returning true allows invoking activate_node. Defaults to returning `true`.
+	 * @name $.jstree.defaults.checkbox.visible
+	 * @plugin checkbox
+	 */
+	$.jstree.defaults.conditionalselect = function () { return true; };
+	$.jstree.plugins.conditionalselect = function (options, parent) {
+		// own function
+		this.activate_node = function (obj, e) {
+			if(this.settings.conditionalselect.call(this, this.get_node(obj), e)) {
+				return parent.activate_node.call(this, obj, e);
+			}
+		};
+	};
+
+}));
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