livecodingspace-app/support/client/lib/vwf/view/editor-new.js

"use strict";

// Copyright 2012 United States Government, as represented by the Secretary of Defense, Under
// Secretary of Defense (Personnel & Readiness).
// 
// Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
// in compliance with the License. You may obtain a copy of the License at
// 
//   http://www.apache.org/licenses/LICENSE-2.0
// 
// Unless required by applicable law or agreed to in writing, software distributed under the License
// is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
// or implied. See the License for the specific language governing permissions and limitations under
// the License.

/// vwf/view/editor creates a view interface for editor functions. 
/// 
/// @module vwf/view/editor
/// @requires version
/// @requires vwf/view
/// @requires vwf/utility

define([
    "module",
    "version",
    "vwf/view",
    "vwf/utility",
    "vwf/view/lib/ace/ace",
    "jquery",
    "jquery-ui",
    "jquery-encoder-0.1.0"
], function (module, version, view, utility, ace, $) {



    return view.load(module, {

        // == Module Definition ====================================================================

        initialize: function () {
            var self = this;
            this.ace = window.ace;

            this.nodes = {};
            this.scenes = {};
            this.allScripts = {};

            // EDITOR CLOSED  --> 0
            // HIERARCHY OPEN --> 1
            // USER LIST OPEN --> 2
            // TIMELINE OPEN  --> 3
            // ABOUT OPEN     --> 4
            this.editorView = 0;
            this.editorOpen = false;
            this.timelineInit = false;
            this.aboutInit = false;
            this.codeEditorInit = false;
            this.modelsInit = false;
            this.editingScript = false;

            this.topdownName = '#topdown_a';
            this.topdownTemp = '#topdown_b';
            this.clientList = '#client_list';
            this.timeline = '#time_control';
            this.about = '#about_tab';
            this.codeEditor = '#codeEditor_tab';
            this.models = '#model_a';
            this.modelsTemp = '#model_b';
            this.currentNodeID = '';
            this.currentModelID = '';
            this.currentModelURL = '';
            this.highlightedChild = '';
            this.intervalTimer = 0;

            this.activeCameraID = undefined;


            $(document.head).append('<style type="text/css" media="screen"> #editorlive { height: 500px; width: 800px; } </style>');
            document.querySelector('head').innerHTML += '<link rel="stylesheet" href="vwf/view/lib/editorLive.css">';



            // $('body').append('<script>mdc.autoInit()</script>');




            $('body').append(
                "<div id='drawer'></div><div id='toolbar'></div<div id='clientsList'></div><div id='editor' class='relClass'>\n" +
                "  <div class='uiContainer'>\n" +
                "    <div class='editor-tabs' id='tabs'>\n" +
                "      <img id='x' style='display:none' src='images/tab_X.png' alt='x' />\n" +
                "      <img id='hierarchy' src='images/tab_Application.png' alt='application' />\n" +
                "      <img id='userlist' src='images/tab_Users.png' alt='users' />\n" +
                "      <img id='timeline' src='images/tab_Time.png' alt='time' />\n" +
                "      <img id='models' src='images/tab_Models.png' alt='models' />\n" +
                "      <img id='about' src='images/tab_About.png' alt='about' />\n" +
                "      <img id='codeEditor' src='images/tab_CodeEditor.png' alt='code' />\n" +
                "    </div>\n" +
                "  </div>\n" +
                "</div>" +
                "<div class='relClass'><div class='uiContainer'><div class='vwf-tree' id='topdown_a'></div></div></div>" +
                "<div class='relClass'><div class='uiContainer'><div class='vwf-tree' id='topdown_b'></div></div></div>" +
                "<div class='relClass'><div class='uiContainer'><div class='vwf-tree' id='client_list'></div></div></div>" +
                "<div class='relClass'><div class='uiContainer'><div class='vwf-tree' id='time_control'></div></div></div>" +
                "<div class='relClass'><div class='uiContainer'><div class='vwf-tree' id='about_tab'></div></div></div>" +
                "<div class='relClass'><div class='uiContainer'><div class='vwf-tree' id='codeEditor_tab'></div></div></div>" +
                "<div class='relClass'><div class='uiContainer'><div class='vwf-tree' id='model_a'></div></div></div>" +
                "<div class='relClass'><div class='uiContainer'><div class='vwf-tree' id='model_b'></div></div></div>"
            );

            //style: "position: absolute; top: 0; left: 0; z-index: 2",

            

            let protoPropertiesCell = function(m) {
                return { 
                    $type: "li",
                    class: "mdc-list-item",
                    _prop: {},
                    $init: function () {
                        let prop = m[1].prop;
                        if (prop.value == undefined) {
                            prop.value = JSON.stringify(utility.transform(vwf.getProperty(self.currentNodeID, prop.name, []), utility.transforms.transit));
                        } 
                        this._prop = prop
                    },
                    $update: function () {
                        this.$components = [{
                            $type: "span",
                            class: "mdc-list-item",
                            $text: this._prop.name,
                            },
                            {
                                class: "mdc-textfield",
                                $cell: true,
                                $type: "div",
                                $components: [{
                                    class: "mdc-textfield__input",
                                    $cell: true,
                                    $type: "input",
                                    type: "text",
                                    value: this._prop.value,
                                    onchange: function(e){
                                        let propValue = this.value;
                                        try {
                                            propValue = JSON.parse(propValue);
                                            self.kernel.setProperty(self.currentNodeID, m.name, propValue);
                                        } catch (e) {
                                            // restore the original value on error
                                            this.value = propValue;
                                        }
                                    }
                                }]
    
                            }
                        ]

                    }
                }  

            }

            let propertiesCell = function(m) {
                return { 
                    $type: "li",
                    class: "mdc-list-item",
                    $components: [{
                        $type: "span",
                        class: "mdc-list-item",
                        $text: m.name,
                        },
                        {
                            class: "mdc-textfield",
                            $cell: true,
                            $type: "div",
                            $components: [{
                                class: "mdc-textfield__input",
                                $cell: true,
                                $type: "input",
                                type: "text",
                                value: m.getValue(),
                                onchange: function(e){
                                    let propValue = this.value;
                                    try {
                                        propValue = JSON.parse(propValue);
                                        self.kernel.setProperty(self.currentNodeID, m.name, propValue);
                                    } catch (e) {
                                        // restore the original value on error
                                        this.value = propValue;
                                    }
                                }
                            }]

                        }
                    ]
                    }


            }

            let nodeLink = function(m){ 
                return { 
                    $type: "li",
                    class: "mdc-list-item",
                    $components: [{
                        $type: "a",
                        class: "mdc-list-item mdc-persistent-drawer--selected",
                        $href: "#",
                        $text: m.name,
                        
                        onclick: function(e){
                            self.currentNodeID = m.ID;
                            document.querySelector('#currentNode')._setNode(m.ID);
                          }
                        }]
                    } 
                };

            let listDivider = {
               //<li role="separator" class="mdc-list-divider"></li>
                    $cell: true,
                    $type: "li",
                    class: "mdc-list-divider",
                    role: "separator"  
            }

            let nodesCell = {
                style:"overflow: scroll; max-height: 600px;",
                $cell: true,
                $type: "div",
                id: "currentNode",
                _currentNode: '',
                _setNode: function (aNode) {
                    this._currentNode = aNode
                },
                $init: function () {
                    //this._currentNode = vwf_view.kernel.find("", "/")[0];
                    //this._currentNode = '3333';
                },
                _getChildNodes: function() {
                            let node = self.nodes[this._currentNode];
                            //let nodeIDAlpha = he.encode(this._currentNode);
                            return node.children
                        },
                _getNodeProperties: function() {
                    let node = self.nodes[this._currentNode];
                    return node.properties
                },
                _getNodeProtoProperties: function() {
                    let node = self.nodes[this._currentNode];
                    let prototypeProperties = getProperties.call(self, self.kernel, node.extendsID);
                    return prototypeProperties
                },
                $update: function () {
                    //this.$text = this._currentNode;
                    this.$components = [
                        {
                            $cell: true,
                            $type: "a",
                            class: "mdc-list-item mdc-persistent-drawer--selected",
                            $href: "#",
                            $text: "<--",
                            onclick: function(e){
                                let node = self.nodes[this._currentNode];
                                if (node.parentID !== 0) {
                                    self.currentNodeID = node.parentID,
                                    document.querySelector('#currentNode')._setNode(self.currentNodeID)
                                }
                                
                              }

                        },
                        {
                            $cell: true,
                            $type: "a",
                            class: "mdc-list-item mdc-persistent-drawer--selected",
                            $href: "#",
                            $text: this._currentNode
                        }, listDivider,
                        {
                            $cell: true,
                            $type: "ul",
                            class: "mdc-list",
                            $components: this._getChildNodes().map(nodeLink)
                        }, listDivider,
                        {
                            $cell: true,
                            $type: "ul",
                            class: "mdc-list",
                            $components: this._getNodeProperties().map(propertiesCell)
                        }, listDivider,
                        {
                            $cell: true,
                            $type: "ul",
                            class: "mdc-list",
                            $components: Object.entries(this._getNodeProtoProperties()).map(protoPropertiesCell)
                        }
                        ]
                }
                
            }

            let clientListCell = {
                $cell: true,
                $type: "div",
                _clientNodes: [],
                _setNode: function (aNodes) {
                    this._clientNodes = aNodes
                },
                $init: function () {
                   // var t = this;
                   // t._clientNodes = self.nodes["http://vwf.example.com/clients.vwf"];



                },
                $update: function () {
                    this.$components = this._filteredItems.map(Tr);
                },
                $components: [{
                    $cell: true,
                    $type: "ul",
                    class: "mdc-list",
                    _items: [],
                    $components: [{
                        $cell: true,
                        $type: "li",
                        class: "mdc-list-item",
                        $text: "client"
                    }
                    ]

                }]
            }

            let drawerCell = {
                $cell: true,
                $type: "nav",
                class: "mdc-persistent-drawer__drawer",
                $components: [
                    {
                        $cell: true,
                        $type: "div",
                        class: "mdc-persistent-drawer__toolbar-spacer",
                    },
                    {
                        $cell: true,
                        $type: "div",
                        class: "mdc-list-group",
                        $components: [{
                            $cell: true,
                            $type: "nav",
                            class: "mdc-list",
                            $components: [{
                                $cell: true,
                                $type: "a",
                                class: "mdc-list-item mdc-persistent-drawer--selected",
                                $href: "#",
                                $components: [{
                                    $cell: true,
                                    $type: "i",
                                    class: "material-icons mdc-list-item__start-detail",
                                    $text: "inbox"
                                },
                                {
                                    $text: "Inbox "
                                }
                                ]

                            },
                            {
                                $cell: true,
                                $type: "a",
                                class: "mdc-list-item mdc-persistent-drawer--selected",
                                $href: "#",
                                $components: [{
                                    $type: "i",
                                    class: "material-icons mdc-list-item__start-detail",
                                    'aria-hidden': "true",
                                    $text: "star"
                                },
                                {
                                    $text: "Star "
                                }]

                            },

                            {
                                class: "mdc-textfield",
                                $cell: true,
                                $type: "div",
                                $components: [{
                                    class: "mdc-textfield__input",
                                    $cell: true,
                                    $type: "input",
                                    type: "text"
                                }]

                            }, nodesCell
                            ]
                        }]
                    }]

            };

            //             <div class="mdc-form-field">
            //   <input type="checkbox" id="input">
            //   <label for="input">Input Label</label>
            // </div>

            document.querySelector("#drawer").$cell({
                $cell: true,
                $type: "aside",
                class: "mdc-persistent-drawer",
                $components: [drawerCell]
            }
            );


            let toolbar = {
                $cell: true,
                $type: "div",
                class: "mdc-toolbar__row",
                $components: [{
                    $type: "section",
                    class: "mdc-toolbar__section mdc-toolbar__section--align-start",
                    $components: [
                        {
                            $type: "button",
                            class: "demo-menu material-icons mdc-toolbar__icon--menu",
                            $text: "menu"


                        },
                        {
                            $type: "span",
                            class: "mdc-toolbar__title catalog-title",
                            $text: "LiveCoding.space"
                        }
                    ]
                }]

            };

            document.querySelector("#toolbar").$cell({
                $cell: true,
                $type: "div",
                class: "mdc-toolbar mdc-toolbar--fixed",
                $components: [toolbar]
            }
            );

            // let drawer = new mdc.drawer.MDCTemporaryDrawer(document.querySelector('.mdc-temporary-drawer'));
            // document.querySelector('.menu').addEventListener('click', () => drawer.open = true);

            var drawerEl = document.querySelector('.mdc-persistent-drawer');
            var MDCPersistentDrawer = mdc.drawer.MDCPersistentDrawer;
            var drawer = new MDCPersistentDrawer(drawerEl);
            document.querySelector('.demo-menu').addEventListener('click', function () {
                self.currentNodeID = (self.currentNodeID == '') ? (vwf_view.kernel.find("", "/")[0]) : self.currentNodeID; 
                document.querySelector('#currentNode')._setNode(self.currentNodeID);
                drawer.open = !drawer.open;
            });
            drawerEl.addEventListener('MDCPersistentDrawer:open', function () {
                console.log('Received MDCPersistentDrawer:open');
            });
            drawerEl.addEventListener('MDCPersistentDrawer:close', function () {
                console.log('Received MDCPersistentDrawer:close');
            });




            



            $('#tabs').stop().animate({ opacity: 0.0 }, 0);

            $('#tabs').mouseenter(function (evt) {
                evt.stopPropagation();
                $('#tabs').stop().animate({ opacity: 1.0 }, 175);
                return false;
            });

            $('#tabs').mouseleave(function (evt) {
                evt.stopPropagation();
                $('#tabs').stop().animate({ opacity: 0.0 }, 175);
                return false;
            });

            $('#hierarchy').click(function (evt) {
                openEditor.call(self, 1);
            });

            $('#userlist').click(function (evt) {
                openEditor.call(self, 2);
            });

            $('#timeline').click(function (evt) {
                openEditor.call(self, 3);
            });

            $('#about').click(function (evt) {
                openEditor.call(self, 4);
            });

            $('#models').click(function (evt) {
                openEditor.call(self, 5);
            });

            $('#codeEditor').click(function (evt) {
                openEditor.call(self, 6);
            });

            $('#x').click(function (evt) {
                closeEditor.call(self);
            });

            $('#topdown_a').hide();
            $('#topdown_b').hide();
            $('#client_list').hide();
            $('#time_control').hide();
            $('#about_tab').hide();
            $('#codeEditor_tab').hide();
            $('#model_a').hide();
            $('#model_b').hide();

            var canvas = document.getElementById(vwf_view.kernel.find("", "/")[0]);
            if (canvas) {
                $('#topdown_a').height(canvas.height);
                $('#topdown_b').height(canvas.height);
                $('#client_list').height(canvas.height);
                $('#time_control').height(canvas.height);
                $('#about_tab').height(canvas.height);
                $('#codeEditor_tab').height(canvas.height);
                $('#model_a').height(canvas.height);
                $('#model_b').height(canvas.height);
            }
            else {
                $('#topdown_a').height(window.innerHeight - 20);
                $('#topdown_b').height(window.innerHeight - 20);
                $('#client_list').height(window.innerHeight - 20);
                $('#time_control').height(window.innerHeight - 20);
                $('#about_tab').height(window.innerHeight - 20);
                $('#codeEditor_tab').height(window.innerHeight - 20);
                $('#model_a').height(window.innerHeight - 20);
                $('#model_b').height(window.innerHeight - 20);
            }
        },

        createdNode: function (nodeID, childID, childExtendsID, childImplementsIDs,
            childSource, childType, childIndex, childName, callback /* ( ready ) */) {

            var nodeIDAttribute = $.encoder.encodeForHTMLAttribute("id", nodeID, true);
            var childIDAttribute = $.encoder.encodeForHTMLAttribute("id", childID, true);
            var childIDAlpha = $.encoder.encodeForAlphaNumeric(childID);

            var kernel = this.kernel;
            var self = this;
            var parent = this.nodes[nodeID];
            var node = this.nodes[childID] = {
                children: [],
                properties: [],
                events: {},
                methods: {},
                parent: parent,
                parentID: nodeID,
                ID: childID,
                extendsID: childExtendsID,
                implementsIDs: childImplementsIDs,
                source: childSource,
                name: childName,
            };

            if (parent) {
                parent.children.push(node);
            }

            if (childID == vwf_view.kernel.find("", "/")[0] && childExtendsID && this.kernel.test(childExtendsID,
                "self::element(*,'http://vwf.example.com/aframe/ascene.vwf')", childExtendsID)) {
                this.scenes[childID] = node;
            }

            if (nodeID === this.currentNodeID && this.editingScript == false) {
                $('#children > div:last').css('border-bottom-width', '1px');
                $("#children").append("<div id='" + childIDAlpha + "' data-nodeID='" + childIDAttribute + "' class='childContainer'><div class='childEntry'><b>" + $.encoder.encodeForHTML(childName) + "</b></div></div>");
                $('#' + childIDAlpha).click(function (evt) {
                    drillDown.call(self, $(this).attr("data-nodeID"), nodeIDAttribute);
                });
                $('#children > div:last').css('border-bottom-width', '3px');
            }

            if (nodeID === this.kernel.application() && childName === 'camera') {
                this.activeCameraID = childID;
            }

            if (nodeID === this.kernel.application()) {
                // document.querySelector('a-scene').classList.add("mdc-toolbar-fixed-adjust");
                document.querySelector('body').classList.add("editor-body");
            }



        },

        createdProperty: function (nodeID, propertyName, propertyValue) {

            return this.initializedProperty(nodeID, propertyName, propertyValue);
        },

        initializedProperty: function (nodeID, propertyName, propertyValue) {

            var node = this.nodes[nodeID];

            if (!node) return;  // TODO: patch until full-graph sync is working; drivers should be able to assume that nodeIDs refer to valid objects

            var property = node.properties[propertyName] = createProperty.call(this, node, propertyName, propertyValue);

            node.properties.push(property);
        },

        deletedNode: function (nodeID) {
            var node = this.nodes[nodeID];
            node.parent.children.splice(node.parent.children.indexOf(node), 1);
            delete this.nodes[nodeID];
            var nodeIDAttribute = $.encoder.encodeForAlphaNumeric(nodeID); // $.encoder.encodeForHTMLAttribute("id", nodeID, true);
            $('#' + nodeIDAttribute).remove();
            $('#children > div:last').css('border-bottom-width', '3px');
        },

        //addedChild: [ /* nodeID, childID, childName */ ],
        //removedChild: [ /* nodeID, childID */ ],

        satProperty: function (nodeID, propertyName, propertyValue) {
            var node = this.nodes[nodeID];

            if (!node) return;  // TODO: patch until full-graph sync is working; drivers should be able to assume that nodeIDs refer to valid objects

            // It is possible for a property to have satProperty called for it without ever getting an
            // initializedProperty (if that property delegated to itself or another on replication)
            // Catch that case here and create the property
            if (!node.properties[propertyName]) {

                var property = node.properties[propertyName] = createProperty.call(this, node, propertyName, propertyValue);

                node.properties.push(property);
            }

            if (propertyName === "activeCamera") {
                if (this.nodes[propertyValue] !== undefined) {
                    this.activeCameraID = propertyValue;
                }
            }

            try {
                propertyValue = utility.transform(propertyValue, utility.transforms.transit);
                node.properties[propertyName].value = JSON.stringify(propertyValue);
                node.properties[propertyName].rawValue = propertyValue;
            } catch (e) {
                this.logger.warnx("satProperty", nodeID, propertyName, propertyValue,
                    "stringify error:", e.message);
                node.properties[propertyName].value = propertyValue;
            }

            if ((this.editorView == 1) && (this.currentNodeID == nodeID)) {
                var nodeIDAttribute = $.encoder.encodeForAlphaNumeric(nodeID); // $.encoder.encodeForHTMLAttribute("id", nodeID, true);
                var propertyNameAttribute = $.encoder.encodeForAlphaNumeric("id", propertyName, true);

                // No need to escape propertyValue, because .val does its own escaping
                $('#input-' + nodeIDAttribute + '-' + propertyNameAttribute).val(node.properties[propertyName].getValue());
            }
        },

        //gotProperty: [ /* nodeID, propertyName, propertyValue */ ],

        createdMethod: function (nodeID, methodName, methodParameters, methodBody) {
            var node = this.nodes[nodeID];
            if (node) {
                node.methods[methodName] = methodParameters;
            }
        },

        //calledMethod: function( nodeID, methodName, methodParameters, methodValue ) {

        //},

        createdEvent: function (nodeID, eventName, eventParameters) {
            var node = this.nodes[nodeID];
            if (node) {
                node.events[eventName] = eventParameters;
            }
        },

        firedEvent: function (nodeID, eventName, eventParameters) {
            if (eventName == "pointerHover") {
                highlightChildInHierarchy.call(this, nodeID);
            }
        },

        executed: function (nodeID, scriptText, scriptType) {

            // var nodeScript = {
            //     text: scriptText,
            //     type: scriptType,
            // };

            // if ( !this.allScripts[ nodeID ] ) {
            //     var nodeScripts = new Array();
            //     nodeScripts.push(nodeScript);

            //     this.allScripts[ nodeID ] = nodeScripts;
            // }

            // else {
            //     this.allScripts[ nodeID ].push(nodeScript);
            // }
        },

        //ticked: [ /* time */ ],

    });

    // -- getChildByName --------------------------------------------------------------------

    


    function getChildByName(node, childName) {
        var childNode = undefined;
        for (var i = 0; i < node.children.length && childNode === undefined; i++) {
            if (node.children[i].name == childName) {
                childNode = node.children[i];
            }
        }
        return childNode;
    };

    function updateCameraProperties() {

        if (this.currentNodeID == this.activeCameraID) {
            if (!this.intervalTimer) {
                var self = this;
                this.intervalTimer = setInterval(function () { updateProperties.call(self, self.activeCameraID) }, 200);
            }
        }
        else {
            if (this.intervalTimer) {
                clearInterval(this.intervalTimer);
                this.intervalTimer = 0;
            }
        }
    }

    function updateProperties(nodeName) {

        var nodeID = nodeName;
        var properties = getProperties.call(this, this.kernel, nodeID);

        for (var i in properties) {
            try {
                var propertyName = properties[i].prop.name;
                var propertyValue = JSON.stringify(utility.transform(vwf.getProperty(nodeID, propertyName, []), utility.transforms.transit));
            } catch (e) {
                this.logger.warnx("satProperty", nodeID, propertyName, propertyValue, "stringify error:", e.message);
            }

            if (propertyValue) {
                var nodeIDAttribute = $.encoder.encodeForAlphaNumeric(nodeID);
                var propertyNameAttribute = $.encoder.encodeForHTMLAttribute("id", propertyName, true);
                var inputElement$ = $('#input-' + nodeIDAttribute + '-' + propertyNameAttribute);
                // Only update if property value input is not in focus
                // If in focus, change font style to italic
                if (!inputElement$.is(":focus")) {
                    inputElement$.val(propertyValue);
                    inputElement$.css("font-style", "normal");
                } else {
                    inputElement$.css("font-style", "italic");
                }
            }
        }
    }

    // -- openEditor ------------------------------------------------------------------------

    function openEditor(eView) // invoke with the view as "this"
    {
        if (eView == 0) {
            closeEditor.call(this);
        }

        if (this.editorView != eView) {
            // Hierarchy
            if (eView == 1) {
                var topdownName = this.topdownName;
                var topdownTemp = this.topdownTemp;

                if (!this.currentNodeID) {
                    this.currentNodeID = vwf_view.kernel.find("", "/")[0];
                }

                drill.call(this, this.currentNodeID, undefined);
                $(this.clientList).hide();
                $(this.timeline).hide();
                $(this.about).hide();
                $(this.codeEditor).hide();
                $(this.models).hide();

                if (this.editorOpen) {
                    $(topdownName).hide();
                    $(topdownTemp).show();
                }

                else {
                    $(topdownTemp).show('slide', { direction: 'right' }, 175);
                }

                this.topdownName = topdownTemp;
                this.topdownTemp = topdownName;
            }

            else if (this.editingScript) {
                // Reset width if on script
                this.editingScript = false;
                $('#editor').animate({ 'left': "-260px" }, 175);
                $('.vwf-tree').animate({ 'width': "260px" }, 175);
            }

            // User List
            if (eView == 2) {
                $(this.topdownName).hide();
                $(this.topdownTemp).hide();
                $(this.timeline).hide();
                $(this.about).hide();
                $(this.codeEditor).hide();
                $(this.models).hide();
                $(this.modelsTemp).hide();
                showUserList.call(this);
            }

            // Timeline
            else if (eView == 3) {
                $(this.topdownName).hide();
                $(this.topdownTemp).hide();
                $(this.clientList).hide();
                $(this.about).hide();
                $(this.codeEditor).hide();
                $(this.models).hide();
                $(this.modelsTemp).hide();
                showTimeline.call(this);
            }

            // About
            else if (eView == 4) {
                $(this.topdownName).hide();
                $(this.topdownTemp).hide();
                $(this.clientList).hide();
                $(this.timeline).hide();
                $(this.models).hide();
                $(this.modelsTemp).hide();
                $(this.codeEditor).hide();
                showAboutTab.call(this);
            }

            // Models
            else if (eView == 5) {
                var models = this.models;
                var modelsTemp = this.modelsTemp;

                showModelsTab.call(this, this.currentModelID, this.currentModelURL);
                $(this.topdownName).hide();
                $(this.topdownTemp).hide();
                $(this.clientList).hide();
                $(this.timeline).hide();
                $(this.about).hide();
                $(this.codeEditor).hide();

                if (this.editorOpen) {
                    $(models).hide();
                    $(modelsTemp).show();
                }

                else {
                    $(modelsTemp).show('slide', { direction: 'right' }, 175);
                }

                this.models = modelsTemp;
                this.modelsTemp = models;
            }

            // Code Editor
            else if (eView == 6) {
                $(this.topdownName).hide();
                $(this.topdownTemp).hide();
                $(this.clientList).hide();
                $(this.timeline).hide();
                $(this.models).hide();
                $(this.modelsTemp).hide();
                $(this.about).hide();
                showCodeEditorTab.call(this);
            }

            if (this.editorView == 0) {
                $('#vwf-root').animate({ 'left': "-=260px" }, 175);
                $('#editor').animate({ 'left': "-260px" }, 175);
                $('#x').delay(1000).css({ 'display': 'inline' });
            }

            this.editorView = eView;
            this.editorOpen = true;
        }
    }

    // -- closeEditor -----------------------------------------------------------------------

    function closeEditor() // invoke with the view as "this"
    {
        var topdownName = this.topdownName;

        if (this.editorOpen && this.editorView == 1) // Hierarchy view open
        {
            $(topdownName).hide('slide', { direction: 'right' }, 175);
            $(topdownName).empty();
            $(this.clientList).hide();
            $(this.timeline).hide();
            $(this.about).hide();
            $(this.codeEditor).hide();
            $(this.models).hide();
        }

        else if (this.editorOpen && this.editorView == 2) // Client list open
        {
            $(this.clientList).hide('slide', { direction: 'right' }, 175);
            $(topdownName).hide();
            $(this.timeline).hide();
            $(this.about).hide();
            $(this.codeEditor).hide();
            $(this.models).hide();
        }

        else if (this.editorOpen && this.editorView == 3) // Timeline open
        {
            $(this.timeline).hide('slide', { direction: 'right' }, 175);
            $(topdownName).hide();
            $(this.clientList).hide();
            $(this.about).hide();
            $(this.models).hide();
        }

        else if (this.editorOpen && this.editorView == 4) // About open
        {
            $(this.about).hide('slide', { direction: 'right' }, 175);
            $(this.codeEditor).hide();
            $(topdownName).hide();
            $(this.clientList).hide();
            $(this.timeline).hide();
            $(this.models).hide();
        }

        else if (this.editorOpen && this.editorView == 5) // Models open
        {
            $(this.models).hide('slide', { direction: 'right' }, 175);
            $(topdownName).hide();
            $(this.clientList).hide();
            $(this.timeline).hide();
            $(this.about).hide();
            $(this.codeEditor).hide();
        }
        else if (this.editorOpen && this.editorView == 6) // Code Editor open
        {
            $(this.codeEditor).hide('slide', { direction: 'right' }, 175);
            $(this.about).hide();
            $(topdownName).hide();
            $(this.clientList).hide();
            $(this.timeline).hide();
            $(this.models).hide();
        }


        $('#vwf-root').animate({ 'left': "+=260px" }, 175);
        $('#editor').animate({ 'left': "0px" }, 175);
        $('#x').css({ 'display': 'none' });
        this.editorView = 0;
        this.editorOpen = false;
    }

    // -- showUserList ----------------------------------------------------------------------

    function showUserList() // invoke with the view as "this"
    {
        var clientList = this.clientList;

        viewClients.call(this);

        if (!this.editorOpen) {
            $(clientList).show('slide', { direction: 'right' }, 175);
        }
        else {
            $(clientList).show();
        }
    }

    // -- viewClients -----------------------------------------------------------------------

    function viewClients() {
        var self = this;
        var app = window.location.pathname;
        var pathSplit = app.split('/');
        if (pathSplit[0] == "") {
            pathSplit.shift();
        }
        if (pathSplit[pathSplit.length - 1] == "") {
            pathSplit.pop();
        }
        var instIndex = pathSplit.length - 1;
        if (pathSplit.length > 2) {
            if (pathSplit[pathSplit.length - 2] == "load") {
                instIndex = pathSplit.length - 3;
            }
        }
        if (pathSplit.length > 3) {
            if (pathSplit[pathSplit.length - 3] == "load") {
                instIndex = pathSplit.length - 4;
            }
        }

        var root = "";
        for (var i = 0; i < instIndex; i++) {
            if (root != "") {
                root = root + "/";
            }
            root = root + pathSplit[i];
        }

        if (root.indexOf('.vwf') != -1) root = root.substring(0, root.lastIndexOf('/'));

        var clients$ = $(this.clientList);
        var node = this.nodes["http://vwf.example.com/clients.vwf"];

        clients$.html("<div class='header'>Connected Clients</div>");

        // Add node children
        clients$.append("<div id='clientsChildren'></div>");
        for (var i = 0; i < node.children.length; i++) {
            var nodeChildIDAttribute = $.encoder.encodeForHTMLAttribute("id", node.children[i].ID, true);
            var nodeChildIDAlpha = $.encoder.encodeForAlphaNumeric(node.children[i].ID);
            var nodeChildNameHTML = $.encoder.encodeForHTML(node.children[i].name);
            $('#clientsChildren').append("<div id='" + nodeChildIDAlpha + "' data-nodeID='" + nodeChildIDAttribute + "' class='childContainer'><div class='childEntry'><b>" + nodeChildNameHTML + "</b></div></div>");
            $('#' + nodeChildIDAlpha).click(function (evt) {
                viewClient.call(self, $(this).attr("data-nodeID"));
            });
        }

        // Login Information
        clients$.append("<div style='padding:6px'><input class='filename_entry' type='text' id='userName' placeholder='Username' /><!-- <input class='filename_entry' type='password' id='password' placeholder='Password'/> --><input class='update_button' type='button' id='login' value='Login' /></div>");
        clients$.append("<hr/>");
        $('#userName').keydown(function (evt) {
            evt.stopPropagation();
        });
        $('#userName').keypress(function (evt) {
            evt.stopPropagation();
        });
        $('#userName').keyup(function (evt) {
            evt.stopPropagation();
        });
        $('#password').keydown(function (evt) {
            evt.stopPropagation();
        });
        $('#password').keypress(function (evt) {
            evt.stopPropagation();
        });
        $('#password').keyup(function (evt) {
            evt.stopPropagation();
        });
        $('#login').click(function (evt) {
            // Future call to validate username and password
            //login.call(self, $('#userName').val(), $('#password').val());

            var moniker = vwf_view.kernel.moniker();
            var clients = vwf_view.kernel.findClients("", "/*");
            var client = undefined;
            for (var i = 0; i < clients.length; i++) {
                if (clients[i].indexOf(moniker) != -1) {
                    client = clients[i];
                    break;
                }
            }
            // var client = vwf_view.kernel.findClients("", "/" + moniker)[0];

            if (client) {
                vwf_view.kernel.setProperty(client, "displayName", $('#userName').val());
            }
        });


        // clients$.append("<div style='padding:6px'><input class='live_button' type='button' id='liveeditor' value='Open Code Editor' /></div>");
        //  $('#liveeditor').click(function(evt) {
        //     openLiveEditor.call(self);
        // });

        // Save / Load
        clients$.append("<div style='padding:6px'><input class='filename_entry' type='text' id='fileName' /><input class='update_button' type='button' id='save' value='Save' /></div>");
        $('#fileName').keydown(function (evt) {
            evt.stopPropagation();
        });
        $('#fileName').keypress(function (evt) {
            evt.stopPropagation();
        });
        $('#fileName').keyup(function (evt) {
            evt.stopPropagation();
        });
        $('#save').click(function (evt) {
            saveStateAsFile.call(self, $('#fileName').val());
        });

        clients$.append("<div style='padding:6px'><select class='filename_select' id='fileToLoad' /></select></div>");
        $('#fileToLoad').append("<option value='none'></option>");

        $.getJSON("/" + root + "/listallsaves", function (data) {
            $.each(data, function (key, value) {
                var applicationName = value['applicationpath'].split("/");
                if (applicationName.length > 0) {
                    applicationName = applicationName[applicationName.length - 1];
                }
                if (applicationName.length > 0) {
                    applicationName = applicationName.charAt(0).toUpperCase() + applicationName.slice(1);
                }
                if (value['latestsave']) {
                    $('#fileToLoad').append("<option value='" + value['savename'] + "' applicationpath='" + value['applicationpath'] + "'>" + applicationName + ": " + value['savename'] + "</option>");
                }
                else {
                    $('#fileToLoad').append("<option value='" + value['savename'] + "' applicationpath='" + value['applicationpath'] + "' revision='" + value['revision'] + "'>" + applicationName + ": " + value['savename'] + " Rev(" + value['revision'] + ")</option>");
                }
            });
        });

        clients$.append("<div style='padding:6px'><input class='update_button' type='button' id='load' value='Load' /></div>");
        $('#load').click(function (evt) {
            loadSavedState.call(self, $('#fileToLoad').val(), $('#fileToLoad').find(':selected').attr('applicationpath'), $('#fileToLoad').find(':selected').attr('revision'));
        });
    }

    // -- editor ---

    function openLiveEditor(value) {

        //this.liveditor = document.createElement('div');
        //this.liveditor.setAttribute('id', "editorlive");
        // $('body').append(this.liveditor); 

        var editor = this.ace.edit("editorlive");
        editor.setTheme("ace/theme/monokai");
        editor.getSession().setMode("ace/mode/javascript");


    }

    // -- viewClient ------------------------------------------------------------------------

    function viewClient(clientID) {
        var self = this;

        var clients$ = $(this.clientList);
        var node = this.nodes[clientID];

        clients$.html("<div class='header'><img src='images/back.png' id='back' alt='back'/> " + $.encoder.encodeForHTML(node.name) + "</div>");
        $('#back').click(function (evt) {
            viewClients.call(self);
        });

        // Add node properties
        clients$.append("<div id='clientProperties'></div>");
        var displayedProperties = {};
        for (var i = 0; i < node.properties.length; i++) {
            if (!displayedProperties[node.properties[i].name]) {
                displayedProperties[node.properties[i].name] = "instance";
                var nodeIDAlpha = $.encoder.encodeForAlphaNumeric(clientID);
                var propertyNameAttribute = $.encoder.encodeForHTMLAttribute("id", node.properties[i].name, true);
                var propertyNameAlpha = $.encoder.encodeForAlphaNumeric(node.properties[i].name);
                var propertyNameHTML = $.encoder.encodeForHTML(node.properties[i].name);
                var propertyValueAttribute = $.encoder.encodeForHTMLAttribute("val", node.properties[i].getValue(), true);
                $('#clientProperties').append("<div id='" + nodeIDAlpha + "-" + propertyNameAlpha + "' class='propEntry'><table><tr><td><b>" + propertyNameHTML + " </b></td><td><input type='text' class='input_text' id='input-" + nodeIDAlpha + "-" + propertyNameAlpha + "' value='" + propertyValueAttribute + "' data-propertyName='" + propertyNameAttribute + "' readonly></td></tr></table></div>");
            }
        }
    }

    // -- drillDown -------------------------------------------------------------------------

    function drillDown(nodeID, drillBackID) // invoke with the view as "this"
    {
        var topdownName = this.topdownName;
        var topdownTemp = this.topdownTemp;

        drill.call(this, nodeID, drillBackID);

        if (nodeID != vwf_view.kernel.find("", "/")[0]) $(topdownName).hide('slide', { direction: 'left' }, 175);
        $(topdownTemp).show('slide', { direction: 'right' }, 175);

        this.topdownName = topdownTemp;
        this.topdownTemp = topdownName;
    }

    // -- drillUp ---------------------------------------------------------------------------

    function drillUp(nodeID) // invoke with the view as "this"
    {
        var topdownName = this.topdownName;
        var topdownTemp = this.topdownTemp;

        drill.call(this, nodeID, undefined);

        $(topdownName).hide('slide', { direction: 'right' }, 175);
        $(topdownTemp).show('slide', { direction: 'left' }, 175);

        this.topdownName = topdownTemp;
        this.topdownTemp = topdownName;
    }

    // -- drillBack---------------------------------------------------------------------------

    function drillBack(nodeID) // invoke with the view as "this"
    {
        var topdownName = this.topdownName;
        var topdownTemp = this.topdownTemp;

        drill.call(this, nodeID, undefined);

        // No slide motion, when resizing script window back to normal
        $(topdownName).hide();
        $(topdownTemp).show();

        this.topdownName = topdownTemp;
        this.topdownTemp = topdownName;
    }

    // -- drill -----------------------------------------------------------------------------

    function drill(nodeID, drillBackID) // invoke with the view as "this"
    {
        var node = this.nodes[nodeID];

        if (!node) {
            this.logger.errorx("drill: Cannot find node '" + nodeID + "'");
            return;
        }

        var self = this;
        var topdownName = this.topdownName;
        var topdownTemp = this.topdownTemp;
        var nodeIDAlpha = $.encoder.encodeForAlphaNumeric(nodeID);

        $(topdownName).html(''); // Clear alternate div first to ensure content is added correctly
        this.currentNodeID = nodeID;

        if (!drillBackID) drillBackID = node.parentID;

        if (nodeID == vwf_view.kernel.find("", "/")[0]) {
            $(topdownTemp).html("<div class='header'>index</div>");
        }
        else {
            $(topdownTemp).html("<div class='header'><img src='images/back.png' id='" + nodeIDAlpha + "-back' alt='back'/> " + $.encoder.encodeForHTML(node.name) + "</div>");
            $('#' + nodeIDAlpha + '-back').click(function (evt) {
                drillUp.call(self, drillBackID);
            });
        }

        // Add node children
        $(topdownTemp).append("<div id='children'></div>");
        for (var i = 0; i < node.children.length; i++) {
            var nodeChildIDAttribute = $.encoder.encodeForHTMLAttribute("id", node.children[i].ID, true);
            var nodeChildIDAlpha = $.encoder.encodeForAlphaNumeric(node.children[i].ID);
            $('#children').append("<div id='" + nodeChildIDAlpha + "' data-nodeID='" + nodeChildIDAttribute + "' class='childContainer'><div class='childEntry'><b>" + $.encoder.encodeForHTML(node.children[i].name) + "</b></div></div>");
            $('#' + nodeChildIDAlpha).click(function (evt) {
                drillDown.call(self, $(this).attr("data-nodeID"), nodeID);
            });
        }

        $('#children > div:last').css('border-bottom-width', '3px');

        // Add prototype children
        // TODO: Commented out until prototype children inherit from prototypes
        /*
        $(topdownTemp).append("<div id='prototypeChildren'></div>");
        var prototypeChildren = getChildren.call( this, this.kernel, node.extendsID ); 
        for ( var key in prototypeChildren)       
        {
            var child = prototypeChildren[key];
            var prototypeChildIDAttribute = $.encoder.encodeForHTMLAttribute("id", child.ID, true);
            var prototypeChildIDAlpha = $.encoder.encodeForAlphaNumeric(child.ID);
            $('#prototypeChildren').append("<div id='" + prototypeChildIDAlpha + "' data-nodeID='" + prototypeChildIDAttribute + "' class='childContainer'><div class='childEntry'><b>" + $.encoder.encodeForHTML(child.name) + "</b></div></div>");
            $('#' + prototypeChildIDAlpha).click( function(evt) {
                drillDown.call(self, $(this).attr("data-nodeID"), nodeID);
            });
        } 
        */   // END TODO:

        $('#prototypeChildren > div:last').css('border-bottom-width', '3px');

        // Add node properties
        $(topdownTemp).append("<div id='properties'></div>");
        var displayedProperties = {};
        for (var i = 0; i < node.properties.length; i++) {
            if (!displayedProperties[node.properties[i].name] && node.properties[i].name.indexOf('$') === -1) {
                displayedProperties[node.properties[i].name] = "instance";
                var propertyNameAttribute = $.encoder.encodeForHTMLAttribute("id", node.properties[i].name, true);
                var propertyNameAlpha = $.encoder.encodeForAlphaNumeric(node.properties[i].name);
                var propertyNameHTML = $.encoder.encodeForHTML(node.properties[i].name);
                var propertyValueAttribute = $.encoder.encodeForHTMLAttribute("val", node.properties[i].getValue(), true);

                if (propertyNameAlpha.indexOf("semantics") > -1) {

                } else if (propertyNameAlpha.indexOf("grammar") > -1) {

                } else if (propertyNameAlpha.indexOf("ohm") > -1) {

                    let propName = propertyNameAlpha;
                    let propValue = node.properties[i].rawValue;

                    $(topdownTemp).append("<div id='" + nodeIDAlpha + "-" + propertyNameAlpha + "'></div>");
                    $('#' + nodeIDAlpha + '-' + propertyNameAlpha).append("<div class='childContainer'><div class='childEntry'><b>" + propertyNameHTML + "</div></div>");

                    $('#' + nodeIDAlpha + '-' + propertyNameAlpha).click(function (evt) {
                        editOhmLang.call(self, nodeID, propName, propValue);
                    });

                    // $('#properties').append("<div id='" + nodeIDAlpha + "-" + propertyNameAlpha + "' class='propEntry'><table><tr><td><b>" + propertyNameHTML + " </b></td><td><input type='text' class='input_text' id='input-" + nodeIDAlpha + "-" + propertyNameAlpha + "' value='" + propertyValueAttribute + "' data-propertyName='" + propertyNameAttribute + "'></td></tr></table></div>");

                } else {

                    $('#properties').append("<div id='" + nodeIDAlpha + "-" + propertyNameAlpha + "' class='propEntry'><table><tr><td><b>" + propertyNameHTML + " </b></td><td><input type='text' class='input_text' id='input-" + nodeIDAlpha + "-" + propertyNameAlpha + "' value='" + propertyValueAttribute + "' data-propertyName='" + propertyNameAttribute + "'></td></tr></table></div>");

                }


                $('#input-' + nodeIDAlpha + '-' + propertyNameAttribute).change(function (evt) {
                    var propName = $.encoder.canonicalize($(this).attr("data-propertyName"));
                    var propValue = $(this).val();

                    try {
                        propValue = JSON.parse($.encoder.canonicalize(propValue));
                        self.kernel.setProperty(nodeID, propName, propValue);
                    } catch (e) {
                        // restore the original value on error
                        $(this).val(propValue);
                    }
                });

                $('#input-' + nodeIDAlpha + '-' + propertyNameAlpha).keydown(function (evt) {
                    evt.stopPropagation();
                });

                $('#input-' + nodeIDAlpha + '-' + propertyNameAlpha).keypress(function (evt) {
                    evt.stopPropagation();
                });

                $('#input-' + nodeIDAlpha + '-' + propertyNameAlpha).keyup(function (evt) {
                    evt.stopPropagation();
                });
            }
        }

        $('#properties > div:last').css('border-bottom-width', '3px');

        this.logger.info(self + "    " + nodeID);

        // Add prototype properties
        $(topdownTemp).append("<div id='prototypeProperties'></div>");
        var prototypeProperties = getProperties.call(this, this.kernel, node.extendsID);
        for (var key in prototypeProperties) {
            var prop = prototypeProperties[key].prop;
            if (!displayedProperties[prop.name]) {
                displayedProperties[prop.name] = prototypeProperties[key].prototype;
                if (prop.value == undefined) {
                    prop.value = JSON.stringify(utility.transform(vwf.getProperty(nodeID, prop.name, []), utility.transforms.transit));
                }

                var propertyNameAttribute = $.encoder.encodeForHTMLAttribute("id", prop.name, true);
                var propertyNameAlpha = $.encoder.encodeForAlphaNumeric(prop.name);
                var propertyNameHTML = $.encoder.encodeForHTML(prop.name);
                var propertyValueAttribute = $.encoder.encodeForHTMLAttribute("val", prop.value, true);
                $('#prototypeProperties').append("<div id='" + nodeIDAlpha + "-" + propertyNameAlpha + "' class='propEntry'><table><tr><td><b>" + propertyNameHTML + " </b></td><td><input type='text' class='input_text' id='input-" + nodeIDAlpha + "-" + propertyNameAlpha + "' value='" + propertyValueAttribute + "' data-propertyName='" + propertyNameAttribute + "'></td></tr></table></div>");

                $('#input-' + nodeIDAlpha + '-' + propertyNameAlpha).change(function (evt) {
                    var propName = $.encoder.canonicalize($(this).attr("data-propertyName"));
                    var propValue = $(this).val();

                    try {
                        propValue = JSON.parse($.encoder.canonicalize(propValue));
                        self.kernel.setProperty(nodeID, propName, propValue);
                    } catch (e) {
                        // restore the original value on error
                        $(this).val(propValue);
                    }
                });

                $('#input-' + nodeIDAlpha + '-' + propertyNameAlpha).keydown(function (evt) {
                    evt.stopPropagation();
                });

                $('#input-' + nodeIDAlpha + '-' + propertyNameAlpha).keypress(function (evt) {
                    evt.stopPropagation();
                });

                $('#input-' + nodeIDAlpha + '-' + propertyNameAlpha).keyup(function (evt) {
                    evt.stopPropagation();
                });
            }
        }

        $('#prototypeProperties > div:last').css('border-bottom-width', '3px');

        // Add node methods
        $(topdownTemp).append("<div id='methods'></div>");
        for (var key in node.methods) {
            var method = node.methods[key];
            var methodNameAlpha = $.encoder.encodeForAlphaNumeric(key);
            var methodNameAttribute = $.encoder.encodeForHTMLAttribute("id", key, true);
            var methodNameHTML = $.encoder.encodeForHTML(key);
            $('#methods').append("<div id='" + methodNameAlpha + "' class='methodEntry'><table><tr><td><b>" + methodNameHTML + " </b></td><td style='text-align:right;overflow:visible'><div id='rollover-" + methodNameAlpha + "' style='position:relative;left:12px'><input type='button' class='input_button_call' id='call-" + methodNameAlpha + "' value='Call' data-methodName='" + methodNameAttribute + "'><img id='param-" + methodNameAlpha + "' data-methodName='" + methodNameAttribute + "' src='images/arrow.png' alt='arrow' style='position:relative;top:4px;left:2px;visibility:hidden'></div></td></tr></table></div>");
            $('#rollover-' + methodNameAlpha).mouseover(function (evt) {
                $('#param-' + $(this).attr("id").substring(9)).css('visibility', 'visible');
            });
            $('#rollover-' + methodNameAlpha).mouseleave(function (evt) {
                $('#param-' + $(this).attr("id").substring(9)).css('visibility', 'hidden');
            });
            $('#call-' + methodNameAlpha).click(function (evt) {
                self.kernel.callMethod(nodeID, $.encoder.canonicalize($(this).attr("data-methodName")));
            });
            $('#param-' + methodNameAlpha).click(function (evt) {
                setParams.call(self, $.encoder.canonicalize($(this).attr("data-methodName")), method, nodeID);
            });
        }

        $('#methods > div:last').css('border-bottom-width', '3px');

        // Add prototype methods
        $(topdownTemp).append("<div id='prototypeMethods'></div>");
        var prototypeMethods = getMethods.call(this, this.kernel, node.extendsID);
        for (var key in prototypeMethods) {
            var method = prototypeMethods[key];
            var prototypeMethodNameAlpha = $.encoder.encodeForAlphaNumeric(key);
            var prototypeMethodNameAttribute = $.encoder.encodeForHTMLAttribute("id", key, true);
            var prototypeMethodNameHTML = $.encoder.encodeForHTML(key);
            $('#prototypeMethods').append("<div id='" + prototypeMethodNameAlpha + "' class='methodEntry'><table><tr><td><b>" + prototypeMethodNameHTML + " </b></td><td style='text-align:right;overflow:visible'><div id='rollover-" + prototypeMethodNameAlpha + "' style='position:relative;left:12px'><input type='button' class='input_button_call' id='call-" + prototypeMethodNameAlpha + "' value='Call' data-methodName='" + prototypeMethodNameAttribute + "'><img id='param-" + prototypeMethodNameAlpha + "' data-methodName='" + prototypeMethodNameAttribute + "' src='images/arrow.png' alt='arrow' style='position:relative;top:4px;left:2px;visibility:hidden'></div></td></tr></table></div>");
            $('#rollover-' + prototypeMethodNameAlpha).mouseover(function (evt) {
                $('#param-' + $(this).attr("id").substring(9)).css('visibility', 'visible');
            });
            $('#rollover-' + prototypeMethodNameAlpha).mouseleave(function (evt) {
                $('#param-' + $(this).attr("id").substring(9)).css('visibility', 'hidden');
            });
            $('#call-' + prototypeMethodNameAlpha).click(function (evt) {
                self.kernel.callMethod(nodeID, $.encoder.canonicalize($(this).attr("data-methodName")));
            });
            $('#param-' + prototypeMethodNameAlpha).click(function (evt) {
                setParams.call(self, $.encoder.canonicalize($(this).attr("data-methodName")), method, nodeID);
            });
        }

        $('#prototypeMethods > div:last').css('border-bottom-width', '3px');

        // Add node events
        $(topdownTemp).append("<div id='events'></div>");
        for (var key in node.events) {
            var nodeEvent = node.events[key];
            var eventNameAlpha = $.encoder.encodeForAlphaNumeric(key);
            var eventNameAttribute = $.encoder.encodeForHTMLAttribute("id", key, true);
            var eventNameHTML = $.encoder.encodeForHTML(key);
            $('#events').append("<div id='" + eventNameAlpha + "' class='methodEntry'><table><tr><td><b>" + eventNameHTML + " </b></td><td style='text-align:right;overflow:visible'><div id='rollover-" + eventNameAlpha + "' style='position:relative;left:12px'><input type='button' class='input_button_call' id='fire-" + eventNameAlpha + "' value='Fire' data-eventName='" + eventNameAttribute + "'><img id='arg-" + eventNameAlpha + "' data-eventName='" + eventNameAttribute + "' src='images/arrow.png' alt='arrow' style='position:relative;top:4px;left:2px;visibility:hidden'></div></td></tr></table></div>");
            $('#rollover-' + eventNameAlpha).mouseover(function (evt) {
                $('#arg-' + $(this).attr("id").substring(9)).css('visibility', 'visible');
            });
            $('#rollover-' + eventNameAlpha).mouseleave(function (evt) {
                $('#arg-' + $(this).attr("id").substring(9)).css('visibility', 'hidden');
            });
            $('#fire-' + eventNameAlpha).click(function (evt) {
                self.kernel.fireEvent(nodeID, $.encoder.canonicalize($(this).attr("data-eventName")));
            });
            $('#arg-' + eventNameAlpha).click(function (evt) {
                setArgs.call(self, $.encoder.canonicalize($(this).attr("data-eventName")), nodeEvent, nodeID);
            });
        }

        $('#events > div:last').css('border-bottom-width', '3px');

        // Add prototype events
        $(topdownTemp).append("<div id='prototypeEvents'></div>");
        var prototypeEvents = getEvents.call(this, this.kernel, node.extendsID);
        for (var key in prototypeEvents) {
            var nodeEvent = prototypeEvents[key];
            var prototypeEventNameAlpha = $.encoder.encodeForAlphaNumeric(key);
            var prototypeEventNameAttribute = $.encoder.encodeForHTMLAttribute("id", key, true);
            var prototypeEventNameHTML = $.encoder.encodeForHTML(key);
            $('#prototypeEvents').append("<div id='" + prototypeEventNameAlpha + "' class='methodEntry'><table><tr><td><b>" + prototypeEventNameHTML + " </b></td><td style='text-align:right;overflow:visible'><div id='rollover-" + prototypeEventNameAlpha + "' style='position:relative;left:12px'><input type='button' class='input_button_call' id='fire-" + prototypeEventNameAlpha + "' value='Fire' data-eventName='" + prototypeEventNameAttribute + "'><img id='arg-" + prototypeEventNameAlpha + "' data-eventName='" + prototypeEventNameAttribute + "' src='images/arrow.png' alt='arrow' style='position:relative;top:4px;left:2px;visibility:hidden'></div></td></tr></table></div>");
            $('#rollover-' + prototypeEventNameAlpha).mouseover(function (evt) {
                $('#arg-' + $(this).attr("id").substring(9)).css('visibility', 'visible');
            });
            $('#rollover-' + prototypeEventNameAlpha).mouseleave(function (evt) {
                $('#arg-' + $(this).attr("id").substring(9)).css('visibility', 'hidden');
            });
            $('#fire-' + prototypeEventNameAlpha).click(function (evt) {
                self.kernel.fireEvent(nodeID, $.encoder.canonicalize($(this).attr("data-eventName")));
            });
            $('#arg-' + prototypeEventNameAlpha).click(function (evt) {
                setArgs.call(self, $.encoder.canonicalize($(this).attr("data-eventName")), nodeEvent, nodeID);
            });
        }

        $('#prototypeEvents > div:last').css('border-bottom-width', '3px');

        // Add node behaviors
        $(topdownTemp).append("<div id='behaviors'></div>");
        for (var i = 0; i < node.implementsIDs.length; i++) {
            var nodeImplementsIDAlpha = $.encoder.encodeForAlphaNumeric(node.implementsIDs[i]);
            var nodeImplementsIDHTML = $.encoder.encodeForHTML(node.implementsIDs[i]);
            $('#behaviors').append("<div class='propEntry'><table><tr><td style='width:92%'><b>" + nodeImplementsIDHTML + "</b></td><td><input id='" + nodeImplementsIDAlpha + "-enable' type='checkbox' checked='checked' disabled='disabled' /></td></tr></table></div>");

            /* 
            //Placeholder to Enable/Disable behaviors
            $('#' + node.implementsID[i] + '-enable').change( function(evt) {
            
            }); 
            */
        }

        $('#behaviors > div:last').css('border-bottom-width', '3px');

        // Add prototype behaviors
        $(topdownTemp).append("<div id='prototypeBehaviors'></div>");
        var prototypeNode = this.nodes[node.extendsID];
        for (var i = 0; i < prototypeNode.implementsIDs.length; i++) {
            var prototypeImplementsIDAlpha = $.encoder.encodeForAlphaNumeric(prototypeNode.implementsIDs[i]);
            var prototypeImplementsIDHTML = $.encoder.encodeForHTML(prototypeNode.implementsIDs[i]);
            $('#prototypeBehaviors').append("<div class='propEntry'><table><tr><td style='width:92%'><b>" + prototypeImplementsIDHTML + "</b></td><td><input id='" + prototypeImplementsIDAlpha + "-enable' type='checkbox' checked='checked' disabled='disabled' /></td></tr></table></div>");
        }

        $('#prototypeBehaviors > div:last').css('border-bottom-width', '3px');

        // Create new method

        $(topdownTemp).append("<div id='createMethodID'></div>");
        $('#createMethodID').append("<div class='childContainer'><div class='childEntry'><b>New Method</div></div>");
        $('#createMethodID').click(function (evt) {
            createMethod.call(self, nodeID);
        });

        // Create new Event

        $(topdownTemp).append("<div id='createEventID'></div>");
        $('#createEventID').append("<div class='childContainer'><div class='childEntry'><b>New Event</div></div>");
        $('#createEventID').click(function (evt) {
            createEvent.call(self, nodeID);
        });

        // Create new script
        $(topdownTemp).append("<div id='createScript'></div>");
        $('#createScript').append("<div class='childContainer'><div class='childEntry'><b>New Script</div></div>");
        $('#createScript').click(function (evt) {
            createScript.call(self, nodeID);
        });
        $('#createScript > div:last').css('border-bottom-width', '3px');

        if (this.allScripts[nodeID] !== undefined) {
            // Add node scripts
            $(topdownTemp).append("<div id='scripts'></div>");
            for (var i = 0; i < this.allScripts[nodeID].length; i++) {
                var scriptFull = this.allScripts[nodeID][i].text;
                if (scriptFull != undefined) {
                    var scriptName = scriptFull.substring(0, scriptFull.indexOf('='));
                    $('#scripts').append("<div id='script-" + nodeIDAlpha + "-" + i + "' class='childContainer'><div class='childEntry'><b>script </b>" + scriptName + "</div></div>");
                    $('#script-' + nodeIDAlpha + "-" + i).click(function (evt) {
                        var scriptID = $(this).attr("id").substring($(this).attr("id").lastIndexOf('-') + 1);
                        viewScript.call(self, nodeID, scriptID, undefined);
                    });
                }
            }

            $('#scripts > div:last').css('border-bottom-width', '3px');
        }

        if (this.allScripts[node.extendsID] !== undefined) {
            // Add prototype scripts
            $(topdownTemp).append("<div id='prototypeScripts'></div>");
            for (var i = 0; i < this.allScripts[node.extendsID].length; i++) {
                var scriptFull = this.allScripts[node.extendsID][i].text;
                if (scriptFull != undefined) {
                    var nodeExtendsIDAlpha = $.encoder.encodeForAlphaNumeric(node.extendsID);
                    var nodeExtendsIDAttribute = $.encoder.encodeForHTMLAttribute("id", node.extendsID, true);
                    var scriptName = scriptFull.substring(0, scriptFull.indexOf('='));
                    $('#prototypeScripts').append("<div id='script-" + nodeExtendsIDAlpha + "-" + i + "' class='childContainer' data-nodeExtendsID='" + nodeExtendsIDAttribute + "'><div class='childEntry'><b>script </b>" + scriptName + "</div></div>");
                    $('#script-' + nodeExtendsIDAlpha + "-" + i).click(function (evt) {
                        var extendsId = $.encoder.canonicalize($(this).attr("data-nodeExtendsID"));
                        var scriptID = $(this).attr("id").substring($(this).attr("id").lastIndexOf('-') + 1);
                        viewScript.call(self, nodeID, scriptID, extendsId);
                    });
                }
            }

            $('#prototypeScripts > div:last').css('border-bottom-width', '3px');
        }
        updateCameraProperties.call(self);
    }

    // createEvent

    function createEvent(nodeID) // invoke with the view as "this"
    {
        var self = this;
        var topdownName = this.topdownName;
        var topdownTemp = this.topdownTemp;

        var nodeIDAlpha = $.encoder.encodeForAlphaNumeric(nodeID);

        $(topdownTemp).html("<div class='header'><img src='images/back.png' id='script-" + nodeIDAlpha + "-back' alt='back'/> New event</div>");
        $('#script-' + nodeIDAlpha + '-back').click(function (evt) {
            self.editingScript = false;
            drillBack.call(self, nodeID);

            // Return editor to normal width
            $('#editor').animate({ 'left': "-260px" }, 175);
            $('.vwf-tree').animate({ 'width': "260px" }, 175);
        });

        $(topdownTemp).append("<div id='cm'>Name:<br/><input type='text' class='input_text' id='eventName'/><br/>Parameters:<br/><input type='text' class='input_text' id='eventParams'/></div><hr><input class='update_button' type='button' id='createEvent' value='Create' />");


        $("#createEvent").click(function (evt) {
            console.log("not yet created");


            if ($('#eventName').val()) {
                var eventName = $('#eventName').val();
                //prmtr = JSON.parse(JSON.stringify($.encoder.canonicalize(prmtr)));
                console.log(eventName);

                if ($('#eventParams').val()) {
                    var params = $('#eventParams').val();
                    params = params.split(',');
                    var cleanParams = [];

                    for (var i = 0; i < params.length; i++) {
                        params[i] = $.trim(params[i]);
                        if (params[i] != '' && params[i] != null && params[i] !== undefined)
                            cleanParams.push(params[i]);
                    }
                    console.log(cleanParams);
                    //prmtr = JSON.parse(JSON.stringify($.encoder.canonicalize(prmtr)));
                }

                let body = '';
                self.kernel.createEvent(nodeID, eventName, cleanParams);
            }
            //self.kernel.execute( nodeID, editor.getValue() );
            // self.kernel.execute( nodeID, $("#newScriptArea").val() );
        });

        $(topdownName).hide();
        $(topdownTemp).show();

        this.topdownName = topdownTemp;
        this.topdownTemp = topdownName;
    }

    // -- createMethod

    function createMethod(nodeID) // invoke with the view as "this"
    {
        var self = this;
        var topdownName = this.topdownName;
        var topdownTemp = this.topdownTemp;

        var nodeIDAlpha = $.encoder.encodeForAlphaNumeric(nodeID);

        $(topdownTemp).html("<div class='header'><img src='images/back.png' id='script-" + nodeIDAlpha + "-back' alt='back'/> New method</div>");
        $('#script-' + nodeIDAlpha + '-back').click(function (evt) {
            self.editingScript = false;
            drillBack.call(self, nodeID);

            // Return editor to normal width
            $('#editor').animate({ 'left': "-260px" }, 175);
            $('.vwf-tree').animate({ 'width': "260px" }, 175);
        });

        $(topdownTemp).append("<div id='cm'>Name:<br/><input type='text' class='input_text' id='methodName'/><br/>Parameters:<br/><input type='text' class='input_text' id='methodParams'/></div><hr><input class='update_button' type='button' id='createMethod' value='Create' />");


        $("#createMethod").click(function (evt) {
            console.log("not yet created");


            if ($('#methodName').val()) {
                var methodName = $('#methodName').val();
                //prmtr = JSON.parse(JSON.stringify($.encoder.canonicalize(prmtr)));
                console.log(methodName);

                if ($('#methodParams').val()) {
                    var params = $('#methodParams').val();
                    params = params.split(',');
                    var cleanParams = [];

                    for (var i = 0; i < params.length; i++) {
                        params[i] = $.trim(params[i]);
                        if (params[i] != '' && params[i] != null && params[i] !== undefined)
                            cleanParams.push(params[i]);
                    }
                    console.log(cleanParams);
                    //prmtr = JSON.parse(JSON.stringify($.encoder.canonicalize(prmtr)));
                }

                let body = '';
                self.kernel.createMethod(nodeID, methodName, cleanParams, body);
            }
            //self.kernel.execute( nodeID, editor.getValue() );
            // self.kernel.execute( nodeID, $("#newScriptArea").val() );
        });

        $(topdownName).hide();
        $(topdownTemp).show();

        this.topdownName = topdownTemp;
        this.topdownTemp = topdownName;
    }

    // -- createScript ----------------------------------------------------------------------

    function createScript(nodeID) // invoke with the view as "this"
    {
        var self = this;
        var topdownName = this.topdownName;
        var topdownTemp = this.topdownTemp;
        var allScripts = this.allScripts;

        var nodeIDAlpha = $.encoder.encodeForAlphaNumeric(nodeID);

        $(topdownTemp).html("<div class='header'><img src='images/back.png' id='script-" + nodeIDAlpha + "-back' alt='back'/> script</div>");
        $('#script-' + nodeIDAlpha + '-back').click(function (evt) {
            self.editingScript = false;
            drillBack.call(self, nodeID);

            // Return editor to normal width
            $('#editor').animate({ 'left': "-260px" }, 175);
            $('.vwf-tree').animate({ 'width': "260px" }, 175);
        });

        // $(topdownTemp).append("<div class='scriptEntry'><pre class='scriptCode'><textarea id='newScriptArea' class='scriptEdit' spellcheck='false' wrap='off'></textarea></pre><input class='update_button' type='button' id='create-" + nodeIDAlpha + "' value='Create' /></div><hr>");

        $(topdownTemp).append("<div class='scriptEntry'><pre class='scriptCode'> <div id='editorlive'></div></pre><input class='update_button' type='button' id='create-" + nodeIDAlpha + "' value='Create' /></div><hr>");

        var editor = createAceEditor(self, nodeID);


        $("#create-" + nodeIDAlpha).click(function (evt) {
            self.kernel.execute(nodeID, editor.getValue());
            // self.kernel.execute( nodeID, $("#newScriptArea").val() );
        });

        // $('#newScriptArea').focus( function(evt) { 
        //     // Expand the script editor
        //     self.editingScript = true;
        //     $('#editor').animate({ 'left' : "-500px" }, 175);
        //     $('.vwf-tree').animate({ 'width' : "500px" }, 175);
        // });
        $('#editorlive').keydown(function (evt) {
            evt.stopPropagation();
        });

        $(topdownName).hide();
        $(topdownTemp).show();

        this.topdownName = topdownTemp;
        this.topdownTemp = topdownName;
    }

    // -- viewScript ------------------------------------------------------------------------

    function createAceEditor(view, nodeID) {
        var editor = view.ace.edit("editorlive");
        editor.setTheme("ace/theme/monokai");
        editor.setFontSize(16);
        editor.getSession().setMode("ace/mode/javascript");

        editor.commands.addCommand({
            name: "doit",
            bindKey: { win: "Ctrl-e", mac: "Command-e" },
            exec: function () {
                codeEditorDoit(editor, nodeID);
            }
        });

        editor.commands.addCommand({
            name: "printit",
            bindKey: { win: "Ctrl-b", mac: "Command-b" },
            exec: function () {
                codeEditorPrintit(editor, nodeID);
            }
        });

        editor.on('focus', function (event, editor) {
            // Expand the script editor
            self.editingScript = true;
            $('#editor').animate({ 'left': "-800px" }, 175);
            $('.vwf-tree').animate({ 'width': "800px" }, 175);
        });

        editor.on('blur', function (event, editor) {
            //    $('#editor').animate({ 'left' : "-260px" }, 175);
            //     $('.vwf-tree').animate({ 'width' : "260px" }, 175);

        });

        return editor;

    }

    function editOhmLang(nodeID, propertyName, propertyValue) {

        var self = this;
        var topdownName = this.topdownName;
        var topdownTemp = this.topdownTemp;

        var nodeIDAlpha = $.encoder.encodeForAlphaNumeric(nodeID);

        $(topdownTemp).html("<div class='header'><img src='images/back.png' id='script-" + nodeIDAlpha + "-back' alt='back'/> script</div>");
        $('#script-' + nodeIDAlpha + '-back').click(function (evt) {
            self.editingScript = false;
            drillBack.call(self, nodeID);

            // Return editor to normal width
            $('#editor').animate({ 'left': "-260px" }, 175);
            $('.vwf-tree').animate({ 'width': "260px" }, 175);
        });

        if (propertyValue != undefined) {

            var propText = propertyValue;
            // var propText = propertyValue.split("\n").map($.trim).filter(function(line) { return line != "" }).join("\n");

            $(topdownTemp).append("<div style='padding:6px'><input class='live_button' type='button' id='update-" + nodeIDAlpha + "-" + propertyName + "' value='Update' /></div>");

            $(topdownTemp).append("<div class='scriptEntry'><pre class='scriptCode'> <div id='editorlive'> </div></pre></div><hr>");

            var editor = createAceEditor(self, nodeID);
            editor.setValue(propText);

            $("#update-" + nodeIDAlpha + "-" + propertyName).click(function (evt) {
                var evalText = editor.getValue();
                self.kernel.setProperty(nodeID, propertyName, evalText);
            });

            $('#editorlive').keydown(function (evt) {
                evt.stopPropagation();
            });
        }

        $(topdownName).hide();
        $(topdownTemp).show();

        this.topdownName = topdownTemp;
        this.topdownTemp = topdownName;


    }



    function viewScript(nodeID, scriptID, extendsID) // invoke with the view as "this"
    {
        var self = this;
        var topdownName = this.topdownName;
        var topdownTemp = this.topdownTemp;
        var allScripts = this.allScripts;

        var nodeIDAlpha = $.encoder.encodeForAlphaNumeric(nodeID);

        $(topdownTemp).html("<div class='header'><img src='images/back.png' id='script-" + nodeIDAlpha + "-back' alt='back'/> script</div>");
        $('#script-' + nodeIDAlpha + '-back').click(function (evt) {
            self.editingScript = false;
            drillBack.call(self, nodeID);

            // Return editor to normal width
            $('#editor').animate({ 'left': "-260px" }, 175);
            $('.vwf-tree').animate({ 'width': "260px" }, 175);
        });

        if (extendsID) {
            nodeID = extendsID;
            nodeIDAlpha = $.encoder.encodeForAlphaNumeric(extendsID);
        }

        var scriptText = self.allScripts[nodeID][scriptID].text;
        if (scriptText != undefined) {
            // $(topdownTemp).append("<div class='scriptEntry'><pre class='scriptCode'><textarea id='scriptTextArea' class='scriptEdit' spellcheck='false' wrap='off'>" + scriptText + "</textarea></pre><input class='update_button' type='button' id='update-" + nodeIDAlpha + "-" + scriptID + "' value='Update' /></div><hr>");

            //Open Live Editor

            $(topdownTemp).append("<div style='padding:6px'><input class='live_button' type='button' id='printit' value='Print It' /><span> </span><input class='live_button' type='button' id='doit-" + nodeIDAlpha + "-" + scriptID + "' value='DoIt' /><span> </span><input class='live_button' type='button' id='update-" + nodeIDAlpha + "-" + scriptID + "' value='Update' /></div>");

            $(topdownTemp).append("<div class='scriptEntry'><pre class='scriptCode'> <div id='editorlive'>" + scriptText + "</div></pre></div><hr>");

            var editor = createAceEditor(self, nodeID);

            //  $(topdownTemp).append("<div style='padding:6px'><input class='live_button' type='button' id='doit' value='DoIt' /></div>");
            $("#doit-" + nodeIDAlpha + "-" + scriptID).click(function (evt) {
                var s_id = $(this).attr("id").substring($(this).attr("id").lastIndexOf('-') + 1);
                self.allScripts[nodeID][s_id].text = undefined;;
                codeEditorDoit.call(self, editor, nodeID);
            });

            $("#printit").click(function (evt) {
                codeEditorPrintit.call(self, editor, nodeID);
            });

            $("#update-" + nodeIDAlpha + "-" + scriptID).click(function (evt) {
                var s_id = $(this).attr("id").substring($(this).attr("id").lastIndexOf('-') + 1);
                self.allScripts[nodeID][s_id].text = undefined;

                var evalText = editor.getValue();
                self.kernel.execute(nodeID, evalText);
            });
            // $('#editorlive').focus( function(evt) { 
            //     // Expand the script editor
            //     self.editingScript = true;
            //     $('#editor').animate({ 'left' : "-500px" }, 175);
            //     $('.vwf-tree').animate({ 'width' : "500px" }, 175);
            // });
            $('#editorlive').keydown(function (evt) {
                evt.stopPropagation();
            });
        }

        $(topdownName).hide();
        $(topdownTemp).show();

        this.topdownName = topdownTemp;
        this.topdownTemp = topdownName;
    }

    // -- setParams -------------------------------------------------------------------------

    function setParams(methodName, methodParams, nodeID) // invoke with the view as "this"
    {
        var self = this;
        var topdownName = this.topdownName;
        var topdownTemp = this.topdownTemp;

        var methodNameAlpha = $.encoder.encodeForAlphaNumeric(methodName);
        var methodNameHTML = $.encoder.encodeForHTML(methodName);

        $(topdownTemp).html("<div class='header'><img src='images/back.png' id='" + methodNameAlpha + "-back' alt='back'/> " + methodNameHTML + "</div>");
        $('#' + methodNameAlpha + '-back').click(function (evt) {

            self.editingScript = false;

            drillUp.call(self, nodeID);

            // Return editor to normal width
            $('#editor').animate({ 'left': "-260px" }, 175);
            $('.vwf-tree').animate({ 'width': "260px" }, 175);


        });

        var nodeIDAlpha = $.encoder.encodeForAlphaNumeric(nodeID);

        var method = vwf.getMethod(nodeID, methodNameAlpha);

        $(topdownTemp).append("<div style='padding:6px'><input class='live_button' type='button' id='printit' value='Print It' /><span> </span><input class='live_button' type='button' id='doit' value='Do It' /><span> </span><input class='live_button' type='button' id='update-" + nodeIDAlpha + "-" + methodNameAlpha + "' value='Update' /><span> </span> <input class='live_button' type='button' id='call' value='Call' /></div>");

        //$(topdownTemp).append("<input class='update_button' type='button' id='call' value='Call' />");


        $(topdownTemp).append("<div id='editorlive'>" + method.body + "</div>");



        var editor = createAceEditor(self, nodeID);

        $("#printit").click(function (evt) {
            codeEditorPrintit.call(self, editor, nodeID);
        });


        $("#doit").click(function (evt) {
            codeEditorDoit.call(self, editor, nodeID);
        });

        $("#update-" + nodeIDAlpha + "-" + methodNameAlpha).click(function (evt) {
            var evalText = editor.getValue();
            self.kernel.setMethod(nodeID, methodNameAlpha,
                { body: evalText, type: "application/javascript", parameters: method.parameters });
        });


        var params = [];
        if (method.parameters) {
            params = method.parameters.length
        };

        if (params >= 1) {

            for (var i = 1; i <= params; i++) {
                $(topdownTemp).append("<div id='param" + i + "' class='propEntry'><table><tr><td><b>" + method.parameters[i - 1] + ": " + i + ": </b></td><td><input type='text' class='input_text' id='input-param" + i + "'></td></tr></table></div>");
                $('#input-param' + i).keydown(function (evt) {
                    evt.stopPropagation();
                });
                $('#input-param' + i).keypress(function (evt) {
                    evt.stopPropagation();
                });
                $('#input-param' + i).keyup(function (evt) {
                    evt.stopPropagation();
                });
            }
        }



        $('#call').click(function (evt) {

            if (params >= 1) {
                var parameters = new Array();
                for (var i = 1; i <= params; i++) {
                    if ($('#input-param' + i).val()) {
                        var prmtr = $('#input-param' + i).val();
                        try {
                            prmtr = JSON.parse(JSON.stringify($.encoder.canonicalize(prmtr)));
                            parameters.push(prmtr);
                        } catch (e) {
                            self.logger.error('Invalid Value');
                        }
                    }
                }
            }

            self.kernel.callMethod(nodeID, methodName, parameters);
        });

        $(topdownName).hide('slide', { direction: 'left' }, 175);
        $(topdownTemp).show('slide', { direction: 'right' }, 175);

        this.topdownName = topdownTemp;
        this.topdownTemp = topdownName;
    }

    // -- setArgs ---------------------------------------------------------------------------

    function setArgs(eventName, eventArgs, nodeID) // invoke with the view as "this"
    {
        var self = this;
        var topdownName = this.topdownName;
        var topdownTemp = this.topdownTemp;

        var eventNameAlpha = $.encoder.encodeForAlphaNumeric(eventName);
        var eventNameHTML = $.encoder.encodeForHTML(eventName);

        $(topdownTemp).html("<div class='header'><img src='images/back.png' id='" + eventNameAlpha + "-back' alt='back'/> " + eventNameHTML + "<input type='button' class='input_button_call' id='fire' value='Fire' style='float:right;position:relative;top:5px;right:33px'></input></div>");
        $('#' + eventNameAlpha + '-back').click(function (evt) {
            drillUp.call(self, nodeID);
        });

        for (var i = 1; i <= 8; i++) {
            $(topdownTemp).append("<div id='arg" + i + "' class='propEntry'><table><tr><td><b>Argument " + i + ": </b></td><td><input type='text' class='input_text' id='input-arg" + i + "'></td></tr></table></div>");
            $('#input-arg' + i).keydown(function (evt) {
                evt.stopPropagation();
            });
            $('#input-arg' + i).keypress(function (evt) {
                evt.stopPropagation();
            });
            $('#input-arg' + i).keyup(function (evt) {
                evt.stopPropagation();
            });
        }

        $(topdownTemp).append("<div style='font-weight:bold;text-align:right;padding-right:10px'></div>");
        $('#fire').click(function (evt) {

            var args = new Array();
            for (var i = 1; i <= 8; i++) {
                if ($('#input-arg' + i).val()) {
                    var arg = $('#input-arg' + i).val();
                    try {
                        arg = JSON.parse($.encoder.canonicalize(arg));
                        args.push(arg);
                    } catch (e) {
                        self.logger.error('Invalid Value');
                    }
                }
            }

            self.kernel.fireEvent(nodeID, eventName, args);
        });

        $(topdownName).hide('slide', { direction: 'left' }, 175);
        $(topdownTemp).show('slide', { direction: 'right' }, 175);

        this.topdownName = topdownTemp;
        this.topdownTemp = topdownName;

    }

    function getPrototypes(kernel, extendsID) {
        var prototypes = [];
        var id = extendsID;

        while (id !== undefined) {
            prototypes.push(id);
            id = kernel.prototype(id);
        }

        return prototypes;
    }

    function getPrototypes(kernel, extendsID) {
        var prototypes = [];
        var id = extendsID;

        while (id !== undefined) {
            prototypes.push(id);
            id = kernel.prototype(id);
        }

        return prototypes;
    }

    function createProperty(node, propertyName, propertyValue) {
        var property = {
            name: propertyName,
            rawValue: propertyValue,
            value: undefined,
            getValue: function () {
                var propertyValue;
                if (this.value == undefined) {
                    try {
                        propertyValue = utility.transform(this.rawValue, utility.transforms.transit);
                        this.value = JSON.stringify(propertyValue);
                    } catch (e) {
                        this.logger.warnx("createdProperty", nodeID, this.propertyName, this.rawValue,
                            "stringify error:", e.message);
                        this.value = this.rawValue;
                    }
                }
                return this.value;
            }
        };

        return property;
    }


    function getProperties(kernel, extendsID) {
        var pTypes = getPrototypes(kernel, extendsID);
        var pProperties = {};
        if (pTypes) {
            for (var i = 0; i < pTypes.length; i++) {
                var nd = this.nodes[pTypes[i]];
                if (nd && nd.properties) {
                    for (var key in nd.properties) {
                        pProperties[key] = { "prop": nd.properties[key], "prototype": pTypes[i] };
                    }
                }
            }
        }
        return pProperties;
    }

    function getChildren(kernel, extendsID) {
        var pTypes = getPrototypes(kernel, extendsID);
        var pChildren = {};
        if (pTypes) {
            for (var i = 0; i < pTypes.length; i++) {
                var nd = this.nodes[pTypes[i]];
                if (nd && nd.children) {
                    for (var key in nd.children) {
                        pChildren[key] = nd.children[key];
                    }
                }
            }
        }
        return pChildren;
    }

    function getEvents(kernel, extendsID) {
        var pTypes = getPrototypes(kernel, extendsID);
        var events = {};
        if (pTypes) {
            for (var i = 0; i < pTypes.length; i++) {
                var nd = this.nodes[pTypes[i]];
                if (nd && nd.events) {
                    for (var key in nd.events) {
                        events[key] = nd.events[key];
                    }
                }
            }
        }
        return events;
    }

    function getMethods(kernel, extendsID) {
        var pTypes = getPrototypes(kernel, extendsID);
        var methods = {};
        if (pTypes) {
            for (var i = 0; i < pTypes.length; i++) {
                var nd = this.nodes[pTypes[i]];
                if (nd && nd.methods) {
                    for (var key in nd.methods) {
                        methods[key] = nd.methods[key];
                    }
                }
            }
        }
        return methods;
    }

    function highlightChildInHierarchy(nodeID) {
        if (this.editorOpen && this.editorView == 1) // Hierarchy view open
        {
            var childDiv = $("div[id='" + nodeID + "']");
            if (childDiv.length > 0) {
                var previousChild = $("div[id='" + this.highlightedChild + "']");
                if (previousChild.length > 0) {
                    previousChild.removeClass('childContainerHighlight');
                }
                childDiv.addClass('childContainerHighlight');
                this.highlightedChild = nodeID;
            }
        }
    }

    // -- showTimeline ----------------------------------------------------------------------

    function showTimeline() // invoke with the view as "this"
    {
        var timeline = this.timeline;

        if (!this.timelineInit) {
            $('#time_control').append("<div class='header'>Timeline</div>" +
                "<div style='text-align:center;padding-top:10px'><span><button id='play'></button><button id='stop'></button></span>" +
                "<span><span class='rate slider'></span>&nbsp;" +
                "<span class='rate vwf-label' style='display: inline-block; width:8ex'></span></span></div>");

            var options = {};

            ["play", "pause", "stop"].forEach(function (state) {
                options[state] = { icons: { primary: "ui-icon-" + state }, label: state, text: false };
            });

            options.rate = { value: 0, min: -2, max: 2, step: 0.1, };

            var state = {};

            $.get(
                "admin/state",
                undefined,
                function (data) {
                    state = data;

                    $("button#play").button("option", state.playing ? options.pause : options.play);
                    $("button#stop").button("option", "disabled", state.stopped);

                    $(".rate.slider").slider("value", Math.log(state.rate) / Math.LN10);

                    if (state.rate < 1.0) {
                        var label_rate = 1.0 / state.rate;
                    }
                    else {
                        var label_rate = state.rate;
                    }

                    var label = label_rate.toFixed(2).toString().replace(/(\.\d*?)0+$/, "$1").replace(/\.$/, "");

                    if (state.rate < 1.0) {
                        label = "&#x2215; " + label;
                    } else {
                        label = label + " &times;";
                    }

                    $(".rate.vwf-label").html(label);
                },
                "json"
            );

            $("button#play").button(
                options.pause
            ).click(function () {
                $.post(
                    state.playing ? "admin/pause" : "admin/play",
                    undefined,
                    function (data) {
                        state = data;

                        $("button#play").button("option", state.playing ? options.pause : options.play);
                        $("button#stop").button("option", "disabled", state.stopped);
                    },
                    "json"
                );
            });


            $("button#stop").button(
                options.stop
            ).click(function () {
                $.post(
                    "admin/stop",
                    undefined,
                    function (data) {
                        state = data;

                        $("button#play").button("option", state.playing ? options.pause : options.play);
                        $("button#stop").button("option", "disabled", state.stopped);
                    },
                    "json"
                );
            });

            $(".rate.slider").slider(
                options.rate
            ).bind("slide", function (event, ui) {
                $.get(
                    "admin/state",

                    { "rate": Math.pow(10, Number(ui.value)) },

                    function (data) {
                        state = data;

                        $(".rate.slider").slider("value", Math.log(state.rate) / Math.LN10);

                        if (state.rate < 1.0) {
                            var label_rate = 1.0 / state.rate;
                        }
                        else {
                            var label_rate = state.rate;
                        }

                        var label = label_rate.toFixed(2).toString().replace(/(\.\d*?)0+$/, "$1").replace(/\.$/, "");

                        if (state.rate < 1.0) {
                            label = "&#x2215; " + label;
                        } else {
                            label = label + " &times;";
                        }

                        $(".rate.vwf-label").html(label);
                    },
                    "json"
                );
            });

            this.timelineInit = true;
        }

        if (!this.editorOpen) {
            $(timeline).show('slide', { direction: 'right' }, 175);
        }
        else {
            $(timeline).show();
        }
    }

    // -- Show Code Editor tab

    function showCodeEditorTab() // invoke with the view as "this"
    {
        var self = this;
        var codeEditor = this.codeEditor;

        if (!this.codeEditorInit) {
            $('#codeEditor_tab').append("<div class='header'>Live Code Editor</div>");

            $('#codeEditor_tab').append("<div style='padding:6px'><input type='button' id='min' value='Min Window' /><span> </span><input class='live_button' type='button' id='printit' value='Print It' /><span> </span><input class='live_button' type='button' id='doit' value='Do It' /></div>");

            $("#doit").click(function (evt) {
                codeEditorDoit.call(self, editor, sceneID);
            });

            $("#printit").click(function (evt) {
                codeEditorPrintit.call(self, editor, sceneID);
            });

            // $('#codeEditor_tab').append("<div style='padding:6px'></div>");
            $('#min').click(function (evt) {
                $('#editor').animate({ 'left': "-260px" }, 175);
                $('.vwf-tree').animate({ 'width': "260px" }, 175);
            });

            //Open Live Editor
            $('#codeEditor_tab').append('<div id="editorlive">console.log("test")</div>');

            var sceneID = self.kernel.application();
            var editor = createAceEditor(self, sceneID);

            editor.on('blur', function (event, editor) {
                //    $('#editor').animate({ 'left' : "-260px" }, 175);
                //     $('.vwf-tree').animate({ 'width' : "260px" }, 175);
            });


            this.codeEditorInit = true;
        }

        if (!this.editorOpen) {
            $(codeEditor).show('slide', { direction: 'right' }, 175);
        }
        else {
            $(codeEditor).show();
            // $('#editor').animate({ 'left' : "-500px" }, 175);
            // $('.vwf-tree').animate({ 'width' : "500px" }, 175);
        }
    }

    function codeEditorDoit(editor, nodeID) {
        var selectedText = editor.getSession().doc.getTextRange(editor.selection.getRange());

        if (selectedText == "") {

            var currline = editor.getSelectionRange().start.row;
            var selectedText = editor.session.getLine(currline);

        }

        //console.log(selectedText);
        //var sceneID = self.kernel.application();
        vwf_view.kernel.execute(nodeID, selectedText);

    }

    function codeEditorPrintit(editor, nodeID) {
        var selectedText = editor.getSession().doc.getTextRange(editor.selection.getRange());

        if (selectedText == "") {

            var currline = editor.getSelectionRange().start.row;
            var selectedText = editor.session.getLine(currline);

        }

        //console.log(selectedText);
        //var sceneID = self.kernel.application();
        let scriptText = 'console.log(' + selectedText + ');'
        self.kernel.execute(nodeID, scriptText);

    }




    // -- showAboutTab ----------------------------------------------------------------------

    function showAboutTab() // invoke with the view as "this"
    {
        var about = this.about;

        if (!this.aboutInit) {
            $('#about_tab').append("<div id='aboutHeader' class='header'>About</div>" +
                "<div class='about'><p style='font:bold 12pt Arial'>Virtual World Framework & LiveCode editor</p>" +
                "<p><b>Version: </b> 0.1 <b>VWF version: </b>" + version.toString() + "</p>" +
                "<p><b>This project site: </b><a href='http://demo.krestianstvo.org' target='_blank'>http://demo.krestianstvo.org</a></p>" +
                "<p><b>Site VWF: </b><a href='http://virtualworldframework.com' target='_blank'>http://virtualworldframework.com</a></p>" +
                "<p><b>Project source: </b><a href='https://github.com/NikolaySuslov/vwf/tree/aframe' target='_blank'>https://github.com/NikolaySuslov/vwf/tree/aframe</a></p></div>");





            let anotherCell =
                {
                    $cell: true,
                    $text: "About: ",
                    class: "mdc-typography--display2",
                    $type: "h2"
                }
            let andAnotherCell =
                {
                    $cell: true,
                    $text: "hello world"
                }

            document.querySelector("#aboutHeader").$cell({
                $cell: true,
                class: 'header',
                $components: [anotherCell, andAnotherCell]
            });

            // document.querySelector("body").$cell({
            //     $cell: true,
            //     $components: [toolbarCell]
            // });

            this.aboutInit = true;



        }

        if (!this.editorOpen) {
            $(about).show('slide', { direction: 'right' }, 175);
        }
        else {
            $(about).show();
        }
    }

    //  -- showModelsTab ----------------------------------------------------------------------

    function showModelsTab(modelID, modelURL) // invoke with the view as "this"
    {
        var self = this;
        var models = this.models;
        var modelsTemp = this.modelsTemp;
        this.currentModelID = modelID;
        this.currentModelURL = modelURL;

        $(models).html("");

        if (modelID == "") {
            $(modelsTemp).html("<div class='header'>Models</div>");

            $.getJSON("admin/models", function (data) {
                if (data.length > 0) {
                    $.each(data, function (key, value) {
                        var fileName = encodeURIComponent(value['basename']);
                        var divId = fileName;
                        if (divId.indexOf('.') != -1) {
                            divId = divId.replace(/\./g, "_");
                        }
                        var url = value['url'];

                        $(modelsTemp).append("<div class='childContainer'><div id='" + divId + "' class='modelEntry' data-url='" + url + "'>"
                            + fileName + "</div></div>");
                        $("#" + divId).click(function (e) {
                            modelDrillDown.call(self, e.target.textContent, e.target.getAttribute("data-url"));
                        })
                    });
                }
                else {
                    $(modelsTemp).append("<div class='childEntry'><p style='font:bold 12pt Arial'>No Models Found</p></div>");
                }
            });
        }
        else {
            var divId = modelID;
            if (divId.indexOf('.') != -1) {
                divId = divId.replace(/\./g, "_");
            }
            $(modelsTemp).html("<div id='" + divId + "-backDiv' class='header'><img src='images/back.png' id='" + divId + "-back' alt='back'/>" + modelID + "</div>");
            $("#" + divId + "-back").click(function (e) {
                modelDrillUp.call(self, '');
            });

            $(modelsTemp).append("<div id='" + divId + "-rotation' class='propEntry'><table><tr><td><b>Rotation</b></td><td>" +
                "<input type='text' class='input_text' id='input-" + divId + "-rotation' value='[1,0,0,0]'></td></tr></table></div>");
            $('#input-' + divId + '-rotation').keydown(function (evt) {
                evt.stopPropagation();
            });
            $('#input-' + divId + '-rotation').keypress(function (evt) {
                evt.stopPropagation();
            });
            $('#input-' + divId + '-rotation').keyup(function (evt) {
                evt.stopPropagation();
            });

            $(modelsTemp).append("<div id='" + divId + "-scale' class='propEntry'><table><tr><td><b>Scale</b></td><td>" +
                "<input type='text' class='input_text' id='input-" + divId + "-scale' value='[1,1,1]'></td></tr></table></div>");
            $('#input-' + divId + '-scale').keydown(function (evt) {
                evt.stopPropagation();
            });
            $('#input-' + divId + '-scale').keypress(function (evt) {
                evt.stopPropagation();
            });
            $('#input-' + divId + '-scale').keyup(function (evt) {
                evt.stopPropagation();
            });

            $(modelsTemp).append("<div id='" + divId + "-translation' class='propEntry'><table><tr><td><b>Translation Offset</b></td><td>" +
                "<input type='text' class='input_text' id='input-" + divId + "-translation' value='[0,0,0]'></td></tr></table></div>");
            $('#input-' + divId + '-translation').keydown(function (evt) {
                evt.stopPropagation();
            });
            $('#input-' + divId + '-translation').keypress(function (evt) {
                evt.stopPropagation();
            });
            $('#input-' + divId + '-translation').keyup(function (evt) {
                evt.stopPropagation();
            });

            $(modelsTemp).append("<div class='drag'><div id='" + divId + "-drag' class='modelEntry' draggable='true' data-escaped-name='" + divId + "' data-url='" + modelURL + "'>Drag To Create</div></div>");

            $("#" + divId + "-drag").on("dragstart", function (e) {
                var fileName = $("#" + e.target.getAttribute("data-escaped-name") + "-backDiv").text();
                var rotation = encodeURIComponent($("#input-" + e.target.getAttribute("data-escaped-name") + "-rotation").val());
                var scale = encodeURIComponent($("#input-" + e.target.getAttribute("data-escaped-name") + "-scale").val());
                var translation = encodeURIComponent($("#input-" + e.target.getAttribute("data-escaped-name") + "-translation").val());
                var fileData = "{\"fileName\":\"" + fileName + "\", \"fileUrl\":\"" + e.target.getAttribute("data-url") + "\", " +
                    "\"rotation\":\"" + rotation + "\", \"scale\":\"" + scale + "\", \"translation\":\"" + translation + "\"}";
                e.originalEvent.dataTransfer.setData('text/plain', fileData);
                e.originalEvent.dataTransfer.setDragImage(e.target, 0, 0);
                return true;
            });
        }
    }

    // -- Model drillDown -------------------------------------------------------------------------

    function modelDrillDown(modelID, modelURL) // invoke with the view as "this"
    {
        var models = this.models;
        var modelsTemp = this.modelsTemp;

        showModelsTab.call(this, modelID, modelURL);

        if (modelID != "") $(models).hide('slide', { direction: 'left' }, 175);
        $(modelsTemp).show('slide', { direction: 'right' }, 175);

        this.models = modelsTemp;
        this.modelsTemp = models;
    }

    // -- Model drillUp ---------------------------------------------------------------------------

    function modelDrillUp(modelID) // invoke with the view as "this"
    {
        var models = this.models;
        var modelsTemp = this.modelsTemp;

        showModelsTab.call(this, modelID);

        $(models).hide('slide', { direction: 'right' }, 175);
        $(modelsTemp).show('slide', { direction: 'left' }, 175);

        this.models = modelsTemp;
        this.modelsTemp = models;
    }

    // -- SaveStateAsFile -------------------------------------------------------------------------

    function saveStateAsFile(filename) // invoke with the view as "this"
    {
        this.logger.info("Saving: " + filename);

        if (supportAjaxUploadWithProgress.call(this)) {
            var xhr = new XMLHttpRequest();

            // Save State Information
            var state = vwf.getState();

            var timestamp = state["queue"].time;
            timestamp = Math.round(timestamp * 1000);

            var objectIsTypedArray = function (candidate) {
                var typedArrayTypes = [
                    Int8Array,
                    Uint8Array,
                    // Uint8ClampedArray,
                    Int16Array,
                    Uint16Array,
                    Int32Array,
                    Uint32Array,
                    Float32Array,
                    Float64Array
                ];

                var isTypedArray = false;

                if (typeof candidate == "object" && candidate != null) {
                    typedArrayTypes.forEach(function (typedArrayType) {
                        isTypedArray = isTypedArray || candidate instanceof typedArrayType;
                    });
                }

                return isTypedArray;
            };

            var transitTransformation = function (object) {
                return objectIsTypedArray(object) ?
                    Array.prototype.slice.call(object) : object;
            };

            var json = JSON.stringify(
                require("vwf/utility").transform(
                    state, transitTransformation
                )
            );

            json = $.encoder.encodeForURL(json);

            var path = window.location.pathname;
            var pathSplit = path.split('/');
            if (pathSplit[0] == "") {
                pathSplit.shift();
            }
            if (pathSplit[pathSplit.length - 1] == "") {
                pathSplit.pop();
            }
            var inst = undefined;
            var instIndex = pathSplit.length - 1;
            if (pathSplit.length > 2) {
                if (pathSplit[pathSplit.length - 2] == "load") {
                    instIndex = pathSplit.length - 3;
                }
            }
            if (pathSplit.length > 3) {
                if (pathSplit[pathSplit.length - 3] == "load") {
                    instIndex = pathSplit.length - 4;
                }
            }
            inst = pathSplit[instIndex];

            var root = "";
            for (var i = 0; i < instIndex; i++) {
                if (root != "") {
                    root = root + "/";
                }
                root = root + pathSplit[i];
            }

            if (filename == '') filename = inst;

            if (root.indexOf('.vwf') != -1) root = root.substring(0, root.lastIndexOf('/'));

            xhr.open("POST", "/" + root + "/save/" + filename, true);
            xhr.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
            xhr.send("root=" + root + "/" + filename + "&filename=saveState&inst=" + inst + "&timestamp=" + timestamp + "&extension=.vwf.json" + "&jsonState=" + json);

            // Save Config Information
            var config = { "info": {}, "model": {}, "view": {} };

            // Save browser title
            config["info"]["title"] = $('title').html();

            // Save model drivers
            Object.keys(vwf_view.kernel.kernel.models).forEach(function (modelDriver) {
                if (modelDriver.indexOf('vwf/model/') != -1) config["model"][modelDriver] = "";
            });

            // If neither glge or threejs model drivers are defined, specify nodriver
            if (config["model"]["vwf/model/glge"] === undefined && config["model"]["vwf/model/threejs"] === undefined) config["model"]["nodriver"] = "";

            // Save view drivers and associated parameters, if any
            Object.keys(vwf_view.kernel.kernel.views).forEach(function (viewDriver) {
                if (viewDriver.indexOf('vwf/view/') != -1) {
                    if (vwf_view.kernel.kernel.views[viewDriver].parameters) {
                        config["view"][viewDriver] = vwf_view.kernel.kernel.views[viewDriver].parameters;
                    }
                    else config["view"][viewDriver] = "";
                }
            });

            var jsonConfig = $.encoder.encodeForURL(JSON.stringify(config));

            // Save config file to server
            var xhrConfig = new XMLHttpRequest();
            xhrConfig.open("POST", "/" + root + "/save/" + filename, true);
            xhrConfig.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
            xhrConfig.send("root=" + root + "/" + filename + "&filename=saveState&inst=" + inst + "&timestamp=" + timestamp + "&extension=.vwf.config.json" + "&jsonState=" + jsonConfig);
        }

        else {
            console.error("Unable to save state.");
        }
    }

    // -- LoadSavedState --------------------------------------------------------------------------

    function loadSavedState(filename, applicationpath, revision) {
        this.logger.info("Loading: " + filename);

        // Redirect until setState ID conflict is resolved
        var path = window.location.pathname;
        var inst = path.substring(path.length - 17, path.length - 1);

        var pathSplit = path.split('/');
        if (pathSplit[0] == "") {
            pathSplit.shift();
        }
        if (pathSplit[pathSplit.length - 1] == "") {
            pathSplit.pop();
        }
        var inst = undefined;
        var instIndex = pathSplit.length - 1;
        if (pathSplit.length > 2) {
            if (pathSplit[pathSplit.length - 2] == "load") {
                instIndex = pathSplit.length - 3;
            }
        }
        if (pathSplit.length > 3) {
            if (pathSplit[pathSplit.length - 3] == "load") {
                instIndex = pathSplit.length - 4;
            }
        }
        inst = pathSplit[instIndex];
        if (revision) {
            window.location.pathname = applicationpath + "/" + inst + '/load/' + filename + '/' + revision + '/';
        }
        else {
            window.location.pathname = applicationpath + "/" + inst + '/load/' + filename + '/';
        }

        // $.get(filename,function(data,status){
        //     vwf.setState(data);
        // });
    }

    // -- SupportAjax -----------------------------------------------------------------------------

    function supportAjaxUploadWithProgress() {
        return supportAjaxUploadProgressEvents();

        function supportAjaxUploadProgressEvents() {
            var xhr = new XMLHttpRequest();
            return !!(xhr && ('upload' in xhr) && ('onprogress' in xhr.upload));
        }
    }
});