// @tag core
// @define Ext.Boot

var Ext = Ext || {};

//<editor-fold desc="Boot">
/**
 * @class Ext.Boot
 * @singleton
 * @private
 */
Ext.Boot = Ext.Boot || (function (emptyFn) {

    var doc = document,
        _emptyArray = [],
        _config = {
            /**
             * @cfg {Boolean} [disableCaching=true]
             * If `true` current timestamp is added to script URL's to prevent caching.
             * In debug builds, adding a "cache" or "disableCacheBuster" query parameter
             * to the page's URL will set this to `false`.
             */
            disableCaching: (/[?&](?:cache|disableCacheBuster)\b/i.test(location.search) ||
                !(/http[s]?\:/i.test(location.href)) ||
                /(^|[ ;])ext-cache=1/.test(doc.cookie)) ? false :
                true,

            /**
             * @cfg {String} [disableCachingParam="_dc"]
             * The query parameter name for the cache buster's timestamp.
             */
            disableCachingParam: '_dc',

            /**
             * @cfg {Boolean} loadDelay
             * Millisecond delay between asynchronous script injection (prevents stack
             * overflow on some user agents) 'false' disables delay but potentially
             * increases stack load.
             */
            loadDelay: false,

            /**
             * @cfg {Boolean} preserveScripts
             * `false` to remove asynchronously loaded scripts, `true` to retain script
             * element for browser debugger compatibility and improved load performance.
             */
            preserveScripts: true,

            /**
             * @cfg {String} [charset=UTF-8]
             * Optional charset to specify encoding of dynamic content.
             */
            charset: 'UTF-8'
        },

        _assetConfig= {},

        cssRe = /\.css(?:\?|$)/i,
        resolverEl = doc.createElement('a'),
        isBrowser = typeof window !== 'undefined',
        _environment = {
            browser: isBrowser,
            node: !isBrowser && (typeof require === 'function'),
            phantom: (window && (window._phantom || window.callPhantom)) || /PhantomJS/.test(window.navigator.userAgent)
        },
        _tags = (Ext.platformTags = {}),

        // All calls to _debug are commented out to speed up old browsers a bit;
        // yes that makes a difference because the cost of concatenating strings
        // and passing them into _debug() adds up pretty quickly.
        _debug = function (message) {
            //console.log(message);
        },
        _apply = function (object, config, defaults) {
            if (defaults) {
                _apply(object, defaults);
            }
            if (object && config && typeof config === 'object') {
                for (var i in config) {
                    object[i] = config[i];
                }
            }
            return object;
        },
        _merge = function() {
            var lowerCase = false,
                obj = Array.prototype.shift.call(arguments),
                index, i, len, value;

            if (typeof arguments[arguments.length - 1] === 'boolean') {
                lowerCase = Array.prototype.pop.call(arguments);
            }

            len = arguments.length;
            for (index = 0; index < len; index++) {
                value = arguments[index];
                if (typeof value === 'object') {
                    for (i in value) {
                        obj[lowerCase ? i.toLowerCase() : i] = value[i];
                    }
                }
            }

            return obj;
        },
        _getKeys = (typeof Object.keys == 'function') ?
            function(object){
                if (!object) {
                    return [];
                }
                return Object.keys(object);
            } :
            function(object) {
                var keys = [],
                    property;

                for (property in object) {
                    if (object.hasOwnProperty(property)) {
                        keys.push(property);
                    }
                }

                return keys;
            },
    /*
     * The Boot loader class manages Request objects that contain one or
     * more individual urls that need to be loaded.  Requests can be performed
     * synchronously or asynchronously, but will always evaluate urls in the
     * order specified on the request object.
     */
        Boot = {
            loading: 0,
            loaded: 0,
            apply: _apply,
            env: _environment,
            config: _config,

            /**
             * @cfg {Object} assetConfig
             * A map (url->assetConfig) that contains information about assets loaded by the Microlaoder.
             */
            assetConfig: _assetConfig,

            // Keyed by absolute URL this object holds "true" if that URL is already loaded
            // or an array of callbacks to call once it loads.
            scripts: {
                /*
                 Entry objects

                 'http://foo.com/bar/baz/Thing.js': {
                 done: true,
                 el: scriptEl || linkEl,
                 preserve: true,
                 requests: [ request1, ... ]
                 }
                 */
            },

            /**
             * contains the current script name being loaded
             * (loadSync or sequential load only)
             */
            currentFile: null,
            suspendedQueue: [],
            currentRequest: null,

            // when loadSync is called, need to cause subsequent load requests to also be loadSync,
            // eg, when Ext.require(...) is called
            syncMode: false,

            /*
             * simple helper method for debugging
             */
            debug: _debug,

            /**
             * enables / disables loading scripts via script / link elements rather
             * than using ajax / eval
             */
            useElements: true,

            listeners: [],

            Request: Request,

            Entry: Entry,

            allowMultipleBrowsers: false,

            browserNames: {
                ie: 'IE',
                firefox: 'Firefox',
                safari: 'Safari',
                chrome: 'Chrome',
                opera: 'Opera',
                dolfin: 'Dolfin',
                edge: 'Edge',
                webosbrowser: 'webOSBrowser',
                chromeMobile: 'ChromeMobile',
                chromeiOS: 'ChromeiOS',
                silk: 'Silk',
                other: 'Other'
            },

            osNames: {
                ios: 'iOS',
                android: 'Android',
                windowsPhone: 'WindowsPhone',
                webos: 'webOS',
                blackberry: 'BlackBerry',
                rimTablet: 'RIMTablet',
                mac: 'MacOS',
                win: 'Windows',
                tizen: 'Tizen',
                linux: 'Linux',
                bada: 'Bada',
                chromeOS: 'ChromeOS',
                other: 'Other'
            },

            browserPrefixes: {
                ie: 'MSIE ',
                edge: 'Edge/',
                firefox: 'Firefox/',
                chrome: 'Chrome/',
                safari: 'Version/',
                opera: 'OPR/',
                dolfin: 'Dolfin/',
                webosbrowser: 'wOSBrowser/',
                chromeMobile: 'CrMo/',
                chromeiOS: 'CriOS/',
                silk: 'Silk/'
            },

            // When a UA reports multiple browsers this list is used to prioritize the 'real' browser
            // lower index number will win
            browserPriority: [
                'edge',
                'opera',
                'dolfin',
                'webosbrowser',
                'silk',
                'chromeiOS',
                'chromeMobile',
                'ie',
                'firefox',
                'safari',
                'chrome'
            ],

            osPrefixes: {
                tizen: '(Tizen )',
                ios: 'i(?:Pad|Phone|Pod)(?:.*)CPU(?: iPhone)? OS ',
                android: '(Android |HTC_|Silk/)', // Some HTC devices ship with an OSX userAgent by default,
                // so we need to add a direct check for HTC_
                windowsPhone: 'Windows Phone ',
                blackberry: '(?:BlackBerry|BB)(?:.*)Version\/',
                rimTablet: 'RIM Tablet OS ',
                webos: '(?:webOS|hpwOS)\/',
                bada: 'Bada\/',
                chromeOS: 'CrOS '
            },

            fallbackOSPrefixes: {
                windows: 'win',
                mac: 'mac',
                linux: 'linux'
            },

            devicePrefixes: {
                iPhone: 'iPhone',
                iPod: 'iPod',
                iPad: 'iPad'
            },

            maxIEVersion: 12,


            /**
             * The default function that detects various platforms and sets tags
             * in the platform map accordingly.  Examples are iOS, android, tablet, etc.
             * @param tags the set of tags to populate
             */
            detectPlatformTags: function () {
                var me = this,
                    ua = navigator.userAgent,
                    isMobile = /Mobile(\/|\s)/.test(ua),
                    element = document.createElement('div'),
                    isEventSupported = function (name, tag) {
                        if (tag === undefined) {
                            tag = window;
                        }

                        var eventName = 'on' + name.toLowerCase(),
                            isSupported = (eventName in element);

                        if (!isSupported) {
                            if (element.setAttribute && element.removeAttribute) {
                                element.setAttribute(eventName, '');
                                isSupported = typeof element[eventName] === 'function';

                                if (typeof element[eventName] !== 'undefined') {
                                    element[eventName] = undefined;
                                }

                                element.removeAttribute(eventName);
                            }
                        }

                        return isSupported;
                    },

                    // Browser Detection
                    getBrowsers = function () {
                        var browsers = {},
                            maxIEVersion, prefix,
                            value, key, index, len, match, version, matched;

                        // MS Edge browser (and possibly others) can report multiple browsers in the UserAgent
                        // "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/42.0.2311.135 Safari/537.36 Edge/12.10240"
                        // we use this to prioritize the actual browser in this situation
                        len = me.browserPriority.length;
                        for (index = 0; index < len; index++) {
                            key = me.browserPriority[index];
                            if (!matched) {
                                value = me.browserPrefixes[key];
                                match = ua.match(new RegExp('(' + value + ')([\\w\\._]+)'));
                                version = match && match.length > 1 ? parseInt(match[2]) : 0;
                                if (version) {
                                    matched = true;
                                }
                            } else {
                                version = 0;
                            }
                            browsers[key] = version;
                        }

                        //Deal with IE document mode
                        if (browsers.ie) {
                            var mode = document.documentMode;

                            if (mode >= 8) {
                                browsers.ie = mode;
                            }
                        }

                        // Fancy IE greater than and less then quick tags
                        version = browsers.ie || false;
                        maxIEVersion = Math.max(version, me.maxIEVersion);

                        for (index = 8; index <= maxIEVersion; ++index) {
                            prefix = 'ie' + index;
                            browsers[prefix + 'm'] = version ? version <= index : 0;
                            browsers[prefix] = version ? version === index : 0;
                            browsers[prefix + 'p'] = version ? version >= index : 0;
                        }

                        return browsers;
                    },

                    //OS Detection
                    getOperatingSystems = function () {
                        var systems = {},
                            value, key, keys, index, len, match, matched, version, activeCount;

                        keys = _getKeys(me.osPrefixes);
                        len = keys.length;
                        for (index = 0, activeCount = 0; index < len; index++) {
                            key = keys[index];
                            value = me.osPrefixes[key];
                            match = ua.match(new RegExp('(' + value + ')([^\\s;]+)'));
                            matched = match ? match[1] : null;

                            // This is here because some HTC android devices show an OSX Snow Leopard userAgent by default.
                            // And the Kindle Fire doesn't have any indicator of Android as the OS in its User Agent
                            if (matched && (matched === 'HTC_' || matched === 'Silk/')) {
                                version = 2.3;
                            } else {
                                version = match && match.length > 1 ? parseFloat(match[match.length - 1]) : 0;
                            }

                            if (version) {
                                activeCount++;
                            }
                            systems[key] = version;
                        }

                        keys = _getKeys(me.fallbackOSPrefixes);

                        // If no OS could be found we resort to the fallbacks, otherwise we just
                        // falsify the fallbacks
                        len = keys.length;
                        for (index = 0; index < len; index++) {
                            key = keys[index];

                            // No OS was detected from osPrefixes
                            if (activeCount === 0) {
                                value = me.fallbackOSPrefixes[key];
                                match = ua.toLowerCase().match(new RegExp(value));
                                systems[key] = match ? true : 0;
                            } else {
                                systems[key] = 0;
                            }
                        }

                        return systems;
                    },

                    // Device Detection
                    getDevices = function () {
                        var devices = {},
                            value, key, keys, index, len, match;

                        keys = _getKeys(me.devicePrefixes);
                        len = keys.length;
                        for (index = 0; index < len; index++) {
                            key = keys[index];
                            value = me.devicePrefixes[key];
                            match = ua.match(new RegExp(value));
                            devices[key] = match ? true : 0;
                        }

                        return devices;
                    },
                    browsers = getBrowsers(),
                    systems = getOperatingSystems(),
                    devices = getDevices(),
                    platformParams = Boot.loadPlatformsParam();

                // We apply platformParams from the query here first to allow for forced user valued
                // to be used in calculation of generated tags
                _merge(_tags, browsers, systems, devices, platformParams, true);

                _tags.phone = !!((_tags.iphone || _tags.ipod) ||
                    (!_tags.silk && (_tags.android && (_tags.android < 3 || isMobile))) ||
                    (_tags.blackberry && isMobile) ||
                    (_tags.windowsphone));

                _tags.tablet = !!(!_tags.phone && (
                        _tags.ipad ||
                        _tags.android ||
                        _tags.silk ||
                        _tags.rimtablet ||
                        (_tags.ie10 && /; Touch/.test(ua))
                    ));

                _tags.touch =
                    // if the browser has touch events we can be reasonably sure the device has
                    // a touch screen
                    isEventSupported('touchend') ||
                    // browsers that use pointer event have maxTouchPoints > 0 if the
                    // device supports touch input
                    // http://www.w3.org/TR/pointerevents/#widl-Navigator-maxTouchPoints
                    navigator.maxTouchPoints ||
                    // IE10 uses a vendor-prefixed maxTouchPoints property
                    navigator.msMaxTouchPoints;

                _tags.desktop = !_tags.phone && !_tags.tablet;
                _tags.cordova = _tags.phonegap = !!(window.PhoneGap || window.Cordova || window.cordova);
                _tags.webview = /(iPhone|iPod|iPad).*AppleWebKit(?!.*Safari)(?!.*FBAN)/i.test(ua);
                _tags.androidstock = (_tags.android <= 4.3) && (_tags.safari || _tags.silk);

                // Re-apply any query params here to allow for user override of generated tags (desktop, touch, tablet, etc)
                _merge(_tags, platformParams, true);
            },

            /**
             * Extracts user supplied platform tags from the "platformTags" query parameter
             * of the form:
             *
             *      ?platformTags=name:state,name:state,...
             *
             * (each tag defaults to true when state is unspecified)
             *
             * Example:
             *
             *      ?platformTags=isTablet,isPhone:false,isDesktop:0,iOS:1,Safari:true, ...
             *
             * @returns {Object} the platform tags supplied by the query string
             */
            loadPlatformsParam: function () {
                // Check if the ?platform parameter is set in the URL
                var paramsString = window.location.search.substr(1),
                    paramsArray = paramsString.split("&"),
                    params = {}, i,
                    platforms = {},
                    tmpArray, tmplen, platform, name, enabled;

                for (i = 0; i < paramsArray.length; i++) {
                    tmpArray = paramsArray[i].split("=");
                    params[tmpArray[0]] = tmpArray[1];
                }

                if (params.platformTags) {
                    tmpArray = params.platformTags.split(",");
                    for (tmplen = tmpArray.length, i = 0; i < tmplen; i++) {
                        platform = tmpArray[i].split(":");
                        name = platform[0];
                        enabled=true;
                        if (platform.length > 1) {
                            enabled = platform[1];
                            if (enabled === 'false' || enabled === '0') {
                                enabled = false;
                            }
                        }
                        platforms[name] = enabled;
                    }
                }
                return platforms;
            },

            filterPlatform: function (platform, excludes) {
                platform = _emptyArray.concat(platform || _emptyArray);
                excludes = _emptyArray.concat(excludes || _emptyArray);

                var plen = platform.length,
                    elen = excludes.length,
                    include = (!plen && elen), // default true if only excludes specified
                    i, tag;

                for (i = 0; i < plen && !include; i++) {
                    tag = platform[i];
                    include = !!_tags[tag];
                }

                for (i = 0; i < elen && include; i++) {
                    tag = excludes[i];
                    include = !_tags[tag];
                }

                return include;
            },

            init: function () {
                var scriptEls = doc.getElementsByTagName('script'),
                    len = scriptEls.length,
                    re = /\/ext(\-[a-z\-]+)?\.js$/,
                    entry, script, src, state, baseUrl, key, n, origin;

                // Since we are loading after other scripts, and we needed to gather them
                // anyway, we track them in _scripts so we don't have to ask for them all
                // repeatedly.
                for (n = 0; n < len; n++) {
                    src = (script = scriptEls[n]).src;
                    if (!src) {
                        continue;
                    }
                    state = script.readyState || null;

                    // If we find a script file called "ext-*.js", then the base path is that file's base path.
                    if (!baseUrl) {
                        if (re.test(src)) {
                            Boot.hasReadyState = ("readyState" in script);
                            Boot.hasAsync = ("async" in script) || !Boot.hasReadyState;
                            baseUrl = src;
                        }
                    }

                    if (!Boot.scripts[key = Boot.canonicalUrl(src)]) {
//                         _debug("creating entry " + key + " in Boot.init");
                        entry = new Entry({
                            key: key,
                            url: src,
                            done: state === null ||  // non-IE
                                state === 'loaded' || state === 'complete', // IE only
                            el: script,
                            prop: 'src'
                        });
                    }
                }

                if (!baseUrl) {
                    script = scriptEls[scriptEls.length - 1];
                    baseUrl = script.src;
                    Boot.hasReadyState = ('readyState' in script);
                    Boot.hasAsync = ("async" in script) || !Boot.hasReadyState;
                }

                Boot.baseUrl = baseUrl.substring(0, baseUrl.lastIndexOf('/') + 1);
                origin = window.location.origin ||
                    window.location.protocol +
                    "//" +
                    window.location.hostname +
                    (window.location.port ? ':' + window.location.port: '');
                Boot.origin = origin;

                Boot.detectPlatformTags();
                Ext.filterPlatform = Boot.filterPlatform;
            },

            /**
             * This method returns a canonical URL for the given URL.
             *
             * For example, the following all produce the same canonical URL (which is the
             * last one):
             *
             *      http://foo.com/bar/baz/zoo/derp/../../goo/Thing.js?_dc=12345
             *      http://foo.com/bar/baz/zoo/derp/../../goo/Thing.js
             *      http://foo.com/bar/baz/zoo/derp/../jazz/../../goo/Thing.js
             *      http://foo.com/bar/baz/zoo/../goo/Thing.js
             *      http://foo.com/bar/baz/goo/Thing.js
             *
             * @private
             */
            canonicalUrl: function (url) {
                // *WARNING WARNING WARNING*
                // This method yields the most correct result we can get but it is EXPENSIVE!
                // In ALL browsers! When called multiple times in a sequence, as if when
                // we resolve dependencies for entries, it will cause garbage collection events
                // and overall painful slowness. This is why we try to avoid it as much as we can.
                // 
                // @TODO - see if we need this fallback logic
                // http://stackoverflow.com/questions/470832/getting-an-absolute-url-from-a-relative-one-ie6-issue
                resolverEl.href = url;

                var ret = resolverEl.href,
                    dc = _config.disableCachingParam,
                    pos = dc ? ret.indexOf(dc + '=') : -1,
                    c, end;

                // If we have a _dc query parameter we need to remove it from the canonical
                // URL.
                if (pos > 0 && ((c = ret.charAt(pos - 1)) === '?' || c === '&')) {
                    end = ret.indexOf('&', pos);
                    end = (end < 0) ? '' : ret.substring(end);
                    if (end && c === '?') {
                        ++pos; // keep the '?'
                        end = end.substring(1); // remove the '&'
                    }
                    ret = ret.substring(0, pos - 1) + end;
                }

                return ret;
            },

            /**
             * Get the config value corresponding to the specified name. If no name is given, will return the config object
             * @param {String} name The config property name
             * @return {Object}
             */
            getConfig: function (name) {
                return name ? Boot.config[name] : Boot.config;
            },

            /**
             * Set the configuration.
             * @param {Object} config The config object to override the default values.
             * @return {Ext.Boot} this
             */
            setConfig: function (name, value) {
                if (typeof name === 'string') {
                    Boot.config[name] = value;
                } else {
                    for (var s in name) {
                        Boot.setConfig(s, name[s]);
                    }
                }
                return Boot;
            },

            getHead: function () {
                return Boot.docHead ||
                    (Boot.docHead = doc.head ||
                        doc.getElementsByTagName('head')[0]);
            },

            create: function (url, key, cfg) {
                var config = cfg || {};
                config.url = url;
                config.key = key;
                return Boot.scripts[key] = new Entry(config);
            },

            getEntry: function (url, cfg, canonicalPath) {
                var key, entry;
                
                // Canonicalizing URLs via anchor element href yields the most correct result
                // but is *extremely* resource heavy so we need to avoid it whenever possible
                key = canonicalPath ? url : Boot.canonicalUrl(url);
                entry = Boot.scripts[key];
                
                if (!entry) {
                    entry = Boot.create(url, key, cfg);
                    
                    if (canonicalPath) {
                        entry.canonicalPath = true;
                    }
                }
                
                return entry;
            },

            registerContent: function (url, type, content) {
                var cfg = {
                    content: content,
                    loaded: true,
                    css: type === 'css'
                };

                return Boot.getEntry(url, cfg);
            },

            processRequest: function(request, sync) {
                request.loadEntries(sync);
            },

            load: function (request) {
//                 _debug("Boot.load called");
                var request = new Request(request);

                if (request.sync || Boot.syncMode) {
                    return Boot.loadSync(request);
                }

                // If there is a request in progress, we must
                // queue this new request to be fired  when the current request completes.
                if (Boot.currentRequest) {
//                     _debug("current active request, suspending this request");
                    // trigger assignment of entries now to ensure that overlapping
                    // entries with currently running requests will synchronize state
                    // with this pending one as they complete
                    request.getEntries();
                    Boot.suspendedQueue.push(request);
                } else {
                    Boot.currentRequest = request;
                    Boot.processRequest(request, false);
                }
                return Boot;
            },

            loadSync: function (request) {
//                 _debug("Boot.loadSync called");
                var request = new Request(request);

                Boot.syncMode++;
                Boot.processRequest(request, true);
                Boot.syncMode--;
                return Boot;
            },

            loadBasePrefix: function(request) {
                request = new Request(request);
                request.prependBaseUrl = true;
                return Boot.load(request);
            },

            loadSyncBasePrefix: function(request) {
                request = new Request(request);
                request.prependBaseUrl = true;
                return Boot.loadSync(request);
            },

            requestComplete: function(request) {
                var next;

                if (Boot.currentRequest === request) {
                    Boot.currentRequest = null;
                    while(Boot.suspendedQueue.length > 0) {
                        next = Boot.suspendedQueue.shift();
                        if(!next.done) {
//                             _debug("resuming suspended request");
                            Boot.load(next);
                            break;
                        }
                    }
                }
                if (!Boot.currentRequest && Boot.suspendedQueue.length == 0) {
                    Boot.fireListeners();
                }
            },

            isLoading: function () {
                return !Boot.currentRequest && Boot.suspendedQueue.length == 0;
            },

            fireListeners: function () {
                var listener;
                while (Boot.isLoading() && (listener = Boot.listeners.shift())) {
                    listener();
                }
            },

            onBootReady: function (listener) {
                if (!Boot.isLoading()) {
                    listener();
                } else {
                    Boot.listeners.push(listener);
                }
            },

            /**
             * this is a helper function used by Ext.Loader to flush out
             * 'uses' arrays for classes in some Ext versions
             */
            getPathsFromIndexes: function (indexMap, loadOrder) {
                // In older versions indexMap was an object instead of a sparse array
                if (!('length' in indexMap)) {
                    var indexArray = [],
                        index;
                    
                    for (index in indexMap) {
                        if (!isNaN(+index)) {
                            indexArray[+index] = indexMap[index];
                        }
                    }
                    
                    indexMap = indexArray;
                }
                
                return Request.prototype.getPathsFromIndexes(indexMap, loadOrder);
            },

            createLoadOrderMap: function(loadOrder) {
                return Request.prototype.createLoadOrderMap(loadOrder);
            },

            fetch: function(url, complete, scope, async) {
                async = (async === undefined) ? !!complete : async;

                var xhr = new XMLHttpRequest(),
                    result, status, content, exception = false,
                    readyStateChange = function () {
                        if (xhr && xhr.readyState == 4) {
                            status = (xhr.status === 1223) ? 204 :
                                (xhr.status === 0 && ((self.location || {}).protocol === 'file:' ||
                                    (self.location || {}).protocol === 'ionp:')) ? 200 : xhr.status;
                            content = xhr.responseText;
                            result = {
                                content: content,
                                status: status,
                                exception: exception
                            };
                            if (complete) {
                                complete.call(scope, result);
                            }
                            xhr.onreadystatechange = emptyFn;
                            xhr = null;
                        }
                    };

                if (async) {
                    xhr.onreadystatechange = readyStateChange;
                }

                try {
//                     _debug("fetching " + url + " " + (async ? "async" : "sync"));
                    xhr.open('GET', url, async);
                    xhr.send(null);
                } catch (err) {
                    exception = err;
                    readyStateChange();
                    return result;
                }

                if (!async) {
                    readyStateChange();
                }

                return result;
            },

            notifyAll: function(entry) {
                entry.notifyRequests();
            }
        };

    function Request(cfg) {
         //The request class encapsulates a series of Entry objects
         //and provides notification around the completion of all Entries
         //in this request.

        if(cfg.$isRequest) {
            return cfg;
        }

        var cfg = cfg.url ? cfg : {url: cfg},
            url = cfg.url,
            urls = url.charAt ? [ url ] : url,
            charset = cfg.charset || Boot.config.charset;

        _apply(this, cfg);
            
        delete this.url;
        this.urls = urls;
        this.charset = charset;
    };
    
    Request.prototype = {
        $isRequest: true,

        createLoadOrderMap: function (loadOrder) {
            var len = loadOrder.length,
                loadOrderMap = {},
                i, element;

            for (i = 0; i < len; i++) {
                element = loadOrder[i];
                loadOrderMap[element.path] = element;
            }

            return loadOrderMap;
        },

        getLoadIndexes: function (item, indexMap, loadOrder, includeUses, skipLoaded) {
            var resolved = [],
                queue = [item],
                itemIndex = item.idx,
                queue, entry, dependencies, depIndex, i, len;
            
            if (indexMap[itemIndex]) {
                // prevent cycles
                return resolved;
            }
            
            // Both indexMap and resolved are sparse arrays keyed by indexes.
            // This gives us a naturally sorted sequence of indexes later on
            // when we need to convert them to paths.
            // indexMap is the map of all indexes we have visited at least once
            // per the current expandUrls() invocation, and resolved is the map
            // of all dependencies for the current item that are not included
            // in indexMap.
            indexMap[itemIndex] = resolved[itemIndex] = true;
            
            while (item = queue.shift()) {
                // Canonicalizing URLs is expensive, we try to avoid it
                if (item.canonicalPath) {
                    entry = Boot.getEntry(item.path, null, true);
                }
                else {
                    entry = Boot.getEntry(this.prepareUrl(item.path));
                }
                
                if (!(skipLoaded && entry.done)) {
                    if (includeUses && item.uses.length) {
                        dependencies = item.requires.concat(item.uses);
                    }
                    else {
                        dependencies = item.requires;
                    }
                    
                    for (i = 0, len = dependencies.length; i < len; i++) {
                        depIndex = dependencies[i];
                        
                        if (!indexMap[depIndex]) {
                            indexMap[depIndex] = resolved[depIndex] = true;
                            queue.push(loadOrder[depIndex]);
                        }
                    }
                }
            }
            
            return resolved;
        },

        getPathsFromIndexes: function (indexes, loadOrder) {
            var paths = [],
                index, len;
            
            // indexes is a sparse array with values being true for defined indexes
            for (index = 0, len = indexes.length; index < len; index++) {
                if (indexes[index]) {
                    paths.push(loadOrder[index].path);
                }
            }
            
            return paths;
        },

        expandUrl: function (url, loadOrder, loadOrderMap, indexMap, includeUses, skipLoaded) {
            var item, resolved;
            
            if (loadOrder) {
                item = loadOrderMap[url];
                
                if (item) {
                    resolved = this.getLoadIndexes(item, indexMap, loadOrder, includeUses, skipLoaded);
                    
                    if (resolved.length) {
                        return this.getPathsFromIndexes(resolved, loadOrder);
                    }
                }
            }
            
            return [url];
        },

        expandUrls: function (urls, includeUses) {
            var me = this,
                loadOrder = me.loadOrder,
                expanded = [],
                expandMap = {},
                indexMap = [],
                loadOrderMap, tmpExpanded, i, len, t, tlen, tUrl;
            
            if (typeof urls === "string") {
                urls = [urls];
            }
            
            if (loadOrder) {
                loadOrderMap = me.loadOrderMap;
                
                if (!loadOrderMap) {
                    loadOrderMap = me.loadOrderMap = me.createLoadOrderMap(loadOrder);
                }
            }
            
            for (i = 0, len = urls.length; i < len; i++) {
                // We don't want to skip loaded entries (last argument === false).
                // There are some overrides that get loaded before their respective classes,
                // and when the class dependencies are processed we don't want to skip over
                // the overrides' dependencies just because they were loaded first.
                tmpExpanded = this.expandUrl(urls[i], loadOrder, loadOrderMap, indexMap, includeUses, false);
                
                for (t = 0, tlen = tmpExpanded.length; t < tlen; t++) {
                    tUrl = tmpExpanded[t];
                    
                    if (!expandMap[tUrl]) {
                        expandMap[tUrl] = true;
                        expanded.push(tUrl);
                    }
                }
            }
            
            if (expanded.length === 0) {
                expanded = urls;
            }
            
            return expanded;
        },

        expandLoadOrder: function () {
            var me = this,
                urls = me.urls,
                expanded;

            if (!me.expanded) {
                expanded = this.expandUrls(urls, true);
                me.expanded = true;
            } else {
                expanded = urls;
            }

            me.urls = expanded;

            // if we added some urls to the request to honor the indicated
            // load order, the request needs to be sequential
            if (urls.length != expanded.length) {
                me.sequential = true;
            }

            return me;
        },

        getUrls: function () {
            this.expandLoadOrder();
            return this.urls;
        },

        prepareUrl: function(url) {
            if(this.prependBaseUrl) {
                return Boot.baseUrl + url;
            }
            return url;
        },

        getEntries: function () {
            var me = this,
                entries = me.entries,
                loadOrderMap, item, i, entry, urls, url;
            
            if (!entries) {
                entries = [];
                urls = me.getUrls();
                
                // If we have loadOrder array then the map will be expanded by now
                if (me.loadOrder) {
                    loadOrderMap = me.loadOrderMap;
                }
                
                for (i = 0; i < urls.length; i++) {
                    url = me.prepareUrl(urls[i]);
                    
                    if (loadOrderMap) {
                        item = loadOrderMap[url];
                    }
                    
                    entry = Boot.getEntry(url, {
                        buster: me.buster,
                        charset: me.charset
                    }, item && item.canonicalPath);
                    
                    entry.requests.push(me);
                    entries.push(entry);
                }
                
                me.entries = entries;
            }
            
            return entries;
        },

        loadEntries: function(sync) {
            var me = this,
                entries = me.getEntries(),
                len = entries.length,
                start = me.loadStart || 0,
                continueLoad, entries, entry, i;

            if(sync !== undefined) {
                me.sync = sync;
            }

            me.loaded = me.loaded || 0;
            me.loading = me.loading || len;

            for(i = start; i < len; i++) {
                entry = entries[i];
                if(!entry.loaded) {
                    continueLoad = entries[i].load(me.sync);
                } else {
                    continueLoad = true;
                }
                if(!continueLoad) {
                    me.loadStart = i;
                    entry.onDone(function(){
                        me.loadEntries(sync);
                    });
                    break;
                }
            }
            me.processLoadedEntries();
        },

        processLoadedEntries: function () {
            var me = this,
                entries = me.getEntries(),
                len = entries.length,
                start = me.startIndex || 0,
                i, entry;

            if (!me.done) {
                for (i = start; i < len; i++) {
                    entry = entries[i];

                    if (!entry.loaded) {
                        me.startIndex = i;
                        return;
                    }

                    if (!entry.evaluated) {
                        entry.evaluate();
                    }

                    if (entry.error) {
                        me.error = true;
                    }
                }
                me.notify();
            }
        },

        notify: function () {
            var me = this;
            if (!me.done) {
                var error = me.error,
                    fn = me[error ? 'failure' : 'success'],
                    delay = ('delay' in me)
                        ? me.delay
                        : (error ? 1 : Boot.config.chainDelay),
                    scope = me.scope || me;
                me.done = true;
                if (fn) {
                    if (delay === 0 || delay > 0) {
                        // Free the stack (and defer the next script)
                        setTimeout(function () {
                            fn.call(scope, me);
                        }, delay);
                    } else {
                        fn.call(scope, me);
                    }
                }
                me.fireListeners();
                Boot.requestComplete(me);
            }
        },

        onDone: function(listener) {
            var me = this,
                listeners = me.listeners || (me.listeners = []);
            if(me.done) {
                listener(me);
            } else {
                listeners.push(listener);
            }
        },

        fireListeners: function() {
            var listeners = this.listeners,
                listener;
            if(listeners) {
//                 _debug("firing request listeners");
                while((listener = listeners.shift())) {
                    listener(this);
                }
            }
        }
    };

    function Entry(cfg) {
         //The Entry class is a token to manage the load and evaluation
         //state of a particular url.  It is used to notify all Requests
         //interested in this url that the content is available.

        if(cfg.$isEntry) {
            return cfg;
        }

//         _debug("creating entry for " + cfg.url);

        var charset = cfg.charset || Boot.config.charset,
            manifest = Ext.manifest,
            loader = manifest && manifest.loader,
            cache = (cfg.cache !== undefined) ? cfg.cache : (loader && loader.cache),
            buster, busterParam;

        if (Boot.config.disableCaching) {
            if (cache === undefined) {
                cache = !Boot.config.disableCaching;
            }

            if (cache === false) {
                buster = +new Date();
            } else if (cache !== true) {
                buster = cache;
            }

            if (buster) {
                busterParam = (loader && loader.cacheParam) || Boot.config.disableCachingParam;
                buster = busterParam + "=" + buster;
            }
        }

        _apply(this, cfg);
        
        this.charset = charset;
        this.buster = buster;
        this.requests = [];
    };
    
    Entry.prototype = {
        $isEntry: true,
        done: false,
        evaluated: false,
        loaded: false,

        isCrossDomain: function() {
            var me = this;
            if(me.crossDomain === undefined) {
//                 _debug("checking " + me.getLoadUrl() + " for prefix " + Boot.origin);
                me.crossDomain = (me.getLoadUrl().indexOf(Boot.origin) !== 0);
            }
            return me.crossDomain;
        },

        isCss: function () {
            var me = this;
            if (me.css === undefined) {
                if (me.url) {
                    var assetConfig = Boot.assetConfig[me.url];
                    me.css = assetConfig ? assetConfig.type === "css" : cssRe.test(me.url);
                } else {
                    me.css = false;
                }
            }
            return this.css;
        },

        getElement: function (tag) {
            var me = this,
                el = me.el;
            if (!el) {
//                 _debug("creating element for " + me.url);
                if (me.isCss()) {
                    tag = tag || "link";
                    el = doc.createElement(tag);
                    if(tag == "link") {
                        el.rel = 'stylesheet';
                        me.prop = 'href';
                    } else {
                        me.prop="textContent";
                    }
                    el.type = "text/css";
                } else {
                    tag = tag || "script";
                    el = doc.createElement(tag);
                    el.type = 'text/javascript';
                    me.prop = 'src';

                    if (me.charset) {
                        el.charset = me.charset;
                    }

                    if (Boot.hasAsync) {
                        el.async = false;
                    }
                }
                me.el = el;
            }
            return el;
        },

        getLoadUrl: function () {
            var me = this,
                url;
            
            url = me.canonicalPath ? me.url : Boot.canonicalUrl(me.url);
            
            if (!me.loadUrl) {
                me.loadUrl = !!me.buster
                    ? (url + (url.indexOf('?') === -1 ? '?' : '&') + me.buster)
                    : url;
            }
            return me.loadUrl;
        },

        fetch: function (req) {
            var url = this.getLoadUrl(),
                async = !!req.async,
                complete = req.complete;

            Boot.fetch(url, complete, this, async);
        },

        onContentLoaded: function (response) {
            var me = this,
                status = response.status,
                content = response.content,
                exception = response.exception,
                url = this.getLoadUrl();
            me.loaded = true;
            if ((exception || status === 0) && !_environment.phantom) {
                me.error =
                    ("Failed loading synchronously via XHR: '" + url +
                        "'. It's likely that the file is either being loaded from a " +
                        "different domain or from the local file system where cross " +
                        "origin requests are not allowed for security reasons. Try " +
                        "asynchronous loading instead.") ||
                    true;
                me.evaluated = true;
            }
            else if ((status >= 200 && status < 300) || status === 304
                || _environment.phantom
                || (status === 0 && content.length > 0)
                ) {
                me.content = content;
            }
            else {
                me.error =
                    ("Failed loading synchronously via XHR: '" + url +
                        "'. Please verify that the file exists. XHR status code: " +
                        status) ||
                    true;
                me.evaluated = true;
            }
        },

        createLoadElement: function(callback) {
            var me = this,
                el = me.getElement(),
                readyStateChange = function(){
                    if (this.readyState === 'loaded' || this.readyState === 'complete') {
                        if(callback) {
                            callback();
                        }
                    }
                },
                errorFn = function() {
                    me.error = true;
                    if(callback) {
                        callback();
                    }
                };
            me.preserve = true;
            el.onerror = errorFn;
            if(Boot.hasReadyState) {
                el.onreadystatechange = readyStateChange;
            } else {
                el.onload = callback;
            }
            // IE starts loading here
            el[me.prop] = me.getLoadUrl();
        },

        onLoadElementReady: function() {
            Boot.getHead().appendChild(this.getElement());
            this.evaluated = true;
        },

        inject: function (content, asset) {
//             _debug("injecting content for " + this.url);
            var me = this,
                head = Boot.getHead(),
                url = me.url,
                key = me.key,
                base, el, ieMode, basePath;

            if (me.isCss()) {
                me.preserve = true;
                basePath = key.substring(0, key.lastIndexOf("/") + 1);
                base = doc.createElement('base');
                base.href = basePath;
                if(head.firstChild) {
                    head.insertBefore(base, head.firstChild);
                } else {
                    head.appendChild(base);
                }
                // reset the href attribute to cuase IE to pick up the change
                base.href = base.href;

                if (url) {
                    content += "\n/*# sourceURL=" + key + " */";
                }

                // create element after setting base
                el = me.getElement("style");

                ieMode = ('styleSheet' in el);

                head.appendChild(base);
                if(ieMode) {
                    head.appendChild(el);
                    el.styleSheet.cssText = content;
                } else {
                    el.textContent = content;
                    head.appendChild(el);
                }
                head.removeChild(base);

            } else {
                // Debugger friendly, file names are still shown even though they're
                // eval'ed code. Breakpoints work on both Firebug and Chrome's Web
                // Inspector.
                if (url) {
                    content += "\n//# sourceURL=" + key;
                }
                Ext.globalEval(content);
            }
            return me;
        },

        loadCrossDomain: function() {
            var me = this,
                complete = function(){
                    me.el.onerror = me.el.onload = emptyFn;
                    me.el = null;
                    me.loaded = me.evaluated = me.done = true;
                    me.notifyRequests();
                };
            me.createLoadElement(function(){
                complete();
            });
            me.evaluateLoadElement();
            // at this point, we need sequential evaluation,
            // which means we can't advance the load until
            // this entry has fully completed
            return false;
        },

        loadElement: function() {
            var me = this,
                complete = function(){
                    me.el.onerror = me.el.onload = emptyFn;
                    me.el = null;
                    me.loaded = me.evaluated = me.done = true;
                    me.notifyRequests();
                };
            me.createLoadElement(function(){
                complete();
            });
            me.evaluateLoadElement();
            return true;
        },

        loadSync: function() {
            var me = this;
            me.fetch({
                async: false,
                complete: function (response) {
                    me.onContentLoaded(response);
                }
            });
            me.evaluate();
            me.notifyRequests();
        },

        load: function (sync) {
            var me = this;
            if (!me.loaded) {
                if(me.loading) {
                    // if we're calling back through load and we're loading but haven't
                    // yet loaded, then we should be in a sequential, cross domain
                    // load scenario which means we can't continue the load on the
                    // request until this entry has fully evaluated, which will mean
                    // loaded = evaluated = done = true in one step.  For css files, this
                    // will happen immediately upon <link> element creation / insertion,
                    // but <script> elements will set this upon load notification
                    return false;
                }
                me.loading = true;

                // for async modes, we have some options
                if (!sync) {
                    // if cross domain, just inject the script tag and let the onload
                    // events drive the progression
                    if(me.isCrossDomain()) {
                        return me.loadCrossDomain();
                    }
                    // for IE, use the readyStateChange allows us to load scripts in parallel
                    // but serialize the evaluation by appending the script node to the
                    // document
                    else if(!me.isCss() && Boot.hasReadyState) {
                        me.createLoadElement(function () {
                            me.loaded = true;
                            me.notifyRequests();
                        });
                    }

                    else if(Boot.useElements &&
                        // older webkit, phantomjs included, won't fire load for link elements
                        !(me.isCss() && _environment.phantom)) {
                        return me.loadElement();
                    }
                    // for other browsers, just ajax the content down in parallel, and use
                    // globalEval to serialize evaluation
                    else {
                        me.fetch({
                            async: !sync,
                            complete: function (response) {
                                me.onContentLoaded(response);
                                me.notifyRequests();
                            }
                        });
                    }
                }

                // for sync mode in js, global eval FTW.  IE won't honor the comment
                // paths in the debugger, so eventually we need a sync mode for IE that
                // uses the readyStateChange mechanism
                else {
                    me.loadSync();
                }
            }
            // signal that the load process can continue
            return true;
        },

        evaluateContent: function () {
            this.inject(this.content);
            this.content = null;
        },

        evaluateLoadElement: function() {
            Boot.getHead().appendChild(this.getElement());
        },

        evaluate: function () {
            var me = this;
            if(!me.evaluated) {
                if(me.evaluating) {
                    return;
                }
                me.evaluating = true;
                if(me.content !== undefined) {
                    me.evaluateContent();
                } else if(!me.error) {
                    me.evaluateLoadElement();
                }
                me.evaluated = me.done = true;
                me.cleanup();
            }
        },

        cleanup: function () {
            var me = this,
                el = me.el,
                prop;

            if (!el) {
                return;
            }

            if (!me.preserve) {
                me.el = null;

                el.parentNode.removeChild(el); // Remove, since its useless now

                for (prop in el) {
                    try {
                        if (prop !== me.prop) {
                            // If we set the src property to null IE
                            // will try and request a script at './null'
                            el[prop] = null;
                        }
                        delete el[prop];      // and prepare for GC
                    } catch (cleanEx) {
                        //ignore
                    }
                }
            }

            // Setting to null can cause exceptions if IE ever needs to call these
            // again (like onreadystatechange). This emptyFn has nothing locked in
            // closure scope so it is about as safe as null for memory leaks.
            el.onload = el.onerror = el.onreadystatechange = emptyFn;
        },

        notifyRequests: function () {
            var requests = this.requests,
                len = requests.length,
                i, request;
            for (i = 0; i < len; i++) {
                request = requests[i];
                request.processLoadedEntries();
            }
            if(this.done) {
                this.fireListeners();
            }
        },

        onDone: function(listener) {
            var me = this,
                listeners = me.listeners || (me.listeners = []);
            if(me.done) {
                listener(me);
            } else {
                listeners.push(listener);
            }
        },

        fireListeners: function() {
            var listeners = this.listeners,
                listener;
            if(listeners && listeners.length > 0) {
//                 _debug("firing event listeners for url " + this.url);
                while((listener = listeners.shift())) {
                    listener(this);
                }
            }
        }
    };

    /**
     * Turns on or off the "cache buster" applied to dynamically loaded scripts. Normally
     * dynamically loaded scripts have an extra query parameter appended to avoid stale
     * cached scripts. This method can be used to disable this mechanism, and is primarily
     * useful for testing. This is done using a cookie.
     * @param {Boolean} disable True to disable the cache buster.
     * @param {String} [path="/"] An optional path to scope the cookie.
     */
    Ext.disableCacheBuster = function (disable, path) {
        var date = new Date();
        date.setTime(date.getTime() + (disable ? 10 * 365 : -1) * 24 * 60 * 60 * 1000);
        date = date.toGMTString();
        doc.cookie = 'ext-cache=1; expires=' + date + '; path=' + (path || '/');
    };


    Boot.init();
    return Boot;

// NOTE: We run the eval at global scope to protect the body of the function and allow
// compressors to still process it.
}(function () {
}));//(eval("/*@cc_on!@*/!1"));

/**
 * This method evaluates the given code free of any local variable. This
 * will be at global scope, in others it will be in a function.
 * @param {String} code The code to evaluate.
 * @private
 * @method
 * @member Ext
 */
Ext.globalEval = Ext.globalEval || (this.execScript
    ? function (code) { execScript(code); }
    : function ($$code) { eval.call(window, $$code); });

/*
 * Only IE8 & IE/Quirks lack Function.prototype.bind so we polyfill that here.
 */
if (!Function.prototype.bind) {
    (function () {
        var slice = Array.prototype.slice,
        // To reduce overhead on call of the bound fn we have two flavors based on
        // whether we have args to prepend or not:
            bind = function (me) {
                var args = slice.call(arguments, 1),
                    method = this;

                if (args.length) {
                    return function () {
                        var t = arguments;
                        // avoid the slice/concat if the caller does not supply args
                        return method.apply(me, t.length ? args.concat(slice.call(t)) : args);
                    };
                }
                // this is the majority use case - just fn.bind(this) and no args

                args = null;
                return function () {
                    return method.apply(me, arguments);
                };
            };
        Function.prototype.bind = bind;
        bind.$extjs = true; // to detect this polyfill if one want to improve it
    }());
}

//</editor-fold>

Ext.setResourcePath = function (poolName, path) {
    var manifest = Ext.manifest || (Ext.manifest = {}),
        paths = manifest.resources || (manifest.resources = {});

    if (manifest) {
        if (typeof poolName !== 'string') {
            Ext.apply(paths, poolName);
        } else {
            paths[poolName] = path;
        }
        manifest.resources = paths;
    }
};

Ext.getResourcePath = function (path, poolName, packageName) {
    if (typeof path !== 'string') {
        poolName = path.pool;
        packageName = path.packageName;
        path = path.path;
    }
    var manifest = Ext.manifest,
        paths = manifest && manifest.resources,
        poolPath = paths[poolName],
        output = [];

    if (poolPath == null) {
        poolPath = paths.path;
        if (poolPath == null) {
            poolPath = 'resources';
        }
    }

    if (poolPath) {
        output.push(poolPath);
    }

    if (packageName) {
        output.push(packageName);
    }

    output.push(path);
    return output.join('/');
};
// here, the extra check for window['Ext'] is needed for use with cmd-test
// code injection.  we need to make that this file will sync up with page global
// scope to avoid duplicate Ext.Boot state.  That check is after the initial Ext check
// to allow the sandboxing template to inject an appropriate Ext var and prevent the
// global detection.
var Ext = Ext || window['Ext'] || {};


//<editor-fold desc="Microloader">
/**
 * @class Ext.Microloader
 * @private
 * @singleton
 */
Ext.Microloader = Ext.Microloader || (function () {
    var Boot = Ext.Boot,
        _debug = function (message) {
            //console.log(message);
        },
        _warn = function (message) {
            console.log("[WARN] " + message);
        },
        _privatePrefix = '_ext:' + location.pathname,

        /**
         * @method getStorageKey
         * The Following combination is used to create isolated local storage keys
         * '_ext' is used to scope all the local storage keys that we internally by Ext
         * 'location.pathname' is used to force each assets to cache by an absolute URL (/build/MyApp) (dev vs prod)
         * 'url' is used to force each asset to cache relative to the page (app.json vs resources/app.css)
         * 'profileId' is used to differentiate the builds of an application (neptune vs crisp)
         * 'Microloader.appId' is unique to the application and will differentiate apps on the same host (dev mode running app watch against multiple apps)
         */
        getStorageKey = function(url, profileId) {
            return  _privatePrefix + url + '-' + (profileId ? profileId + '-' : '') + Microloader.appId;
        },
        postProcessor, _storage;

    try {
        _storage = window['localStorage'];
    } catch(ex) {
        // ignore
    }

    var _cache = window['applicationCache'],
        // Local Storage Controller
        LocalStorage = {
            clearAllPrivate: function(manifest) {
                if(_storage) {

                    //Remove the entry for the manifest first
                    _storage.removeItem(manifest.key);

                    var i, key,
                        removeKeys = [],
                        suffix = manifest.profile + '-' + Microloader.appId,
                        ln = _storage.length;
                    for (i = 0; i < ln; i++) {
                        key = _storage.key(i);
                        // If key starts with the private key and the suffix is present we can clear this entry
                        if (key.indexOf(_privatePrefix) === 0 && key.indexOf(suffix) !== -1) {
                            removeKeys.push(key);
                        }
                    }

                    for(i in removeKeys) {
                        _debug("Removing "+ removeKeys[i] + " from Local Storage");
                        _storage.removeItem(removeKeys[i]);
                    }
                }
            },
            /**
             * @private
             */
            retrieveAsset: function (key) {
                try {
                    return _storage.getItem(key);
                }
                catch (e) {
                    // Private browsing mode
                    return null;
                }
            },

            setAsset: function(key, content) {
                try {
                    if (content === null || content == '') {
                        _storage.removeItem(key);
                    } else {
                        _storage.setItem(key, content);
                    }
                }
                catch (e) {
                    if (_storage && e.code == e.QUOTA_EXCEEDED_ERR) {
                        _warn("LocalStorage Quota exceeded, cannot store " + key + " locally");
                    }
                }
            }
        };

        var Asset = function (cfg) {
            if (typeof cfg.assetConfig === 'string') {
                this.assetConfig = {
                    path: cfg.assetConfig
                };
            } else {
                this.assetConfig = cfg.assetConfig;
            }

            this.type = cfg.type;
            this.key = getStorageKey(this.assetConfig.path, cfg.manifest.profile);

            if (cfg.loadFromCache) {
                this.loadFromCache();
            }
        };

        Asset.prototype = {
            shouldCache: function() {
                return _storage && this.assetConfig.update && this.assetConfig.hash && !this.assetConfig.remote;
            },

            is: function (asset) {
                return (!!asset && this.assetConfig && asset.assetConfig && (this.assetConfig.hash === asset.assetConfig.hash))
            },

            cache: function(content) {
                if (this.shouldCache()) {
                    LocalStorage.setAsset(this.key, content || this.content);
                }
            },

            uncache: function() {
                LocalStorage.setAsset(this.key, null);
            },

            updateContent: function (content) {
                this.content = content;
            },

            getSize: function () {
                return this.content ? this.content.length : 0;
            },

            loadFromCache: function() {
                if (this.shouldCache()) {
                    this.content = LocalStorage.retrieveAsset(this.key);
                }
            }
        };

        var Manifest = function (cfg) {
            if (typeof cfg.content === "string") {
                this.content = JSON.parse(cfg.content);
            } else {
                this.content = cfg.content;
            }
            this.assetMap = {};

            this.url = cfg.url;
            this.fromCache = !!cfg.cached;
            this.assetCache = !(cfg.assetCache === false);
            this.key = getStorageKey(this.url);

            // Pull out select properties for repetitive use
            this.profile = this.content.profile;
            this.hash = this.content.hash;
            this.loadOrder = this.content.loadOrder;
            this.deltas = this.content.cache ? this.content.cache.deltas : null;
            this.cacheEnabled = this.content.cache ? this.content.cache.enable : false;

            this.loadOrderMap = (this.loadOrder) ? Boot.createLoadOrderMap(this.loadOrder) : null;

            var tags = this.content.tags,
                platformTags = Ext.platformTags;

            if (tags) {
                if (tags instanceof Array) {
                    for (var i = 0; i < tags.length; i++) {
                        platformTags[tags[i]] = true;
                    }
                } else {
                    Boot.apply(platformTags, tags);
                }

                // re-apply the query parameters, so that the params as specified
                // in the url always has highest priority
                Boot.apply(platformTags, Boot.loadPlatformsParam());
            }

            // Convert all assets into Assets
            this.js = this.processAssets(this.content.js, 'js');
            this.css = this.processAssets(this.content.css, 'css');
        };

        Manifest.prototype = {
            processAsset:  function(assetConfig, type) {
                var processedAsset = new Asset({
                    manifest: this,
                    assetConfig: assetConfig,
                    type: type,
                    loadFromCache: this.assetCache
                });
                this.assetMap[assetConfig.path] = processedAsset;
                return processedAsset;
            },

            processAssets: function(assets, type) {
                var results = [],
                    ln = assets.length,
                    i, assetConfig;

                for (i = 0; i < ln; i++) {
                    assetConfig = assets[i];
                    results.push(this.processAsset(assetConfig, type));
                }

                return results;
            },

            useAppCache: function() {
                return true;
            },

            // Concatenate all assets for easy access
            getAssets: function () {
                return this.css.concat(this.js);
            },

            getAsset: function (path) {
                return this.assetMap[path];
            },

            shouldCache: function() {
                return this.hash && this.cacheEnabled;
            },

            cache: function(content) {
                if (this.shouldCache()) {
                    LocalStorage.setAsset(this.key, JSON.stringify(content || this.content));
                }
                else {
                    _debug("Manifest caching is disabled.");
                }
            },

            is: function(manifest) {
                _debug("Testing Manifest: " + this.hash + " VS " +  manifest.hash);
                return this.hash === manifest.hash;
            },

            // Clear the manifest from local storage
            uncache: function() {
                LocalStorage.setAsset(this.key, null);
            },

            exportContent: function() {
                return Boot.apply({
                    loadOrderMap: this.loadOrderMap
                }, this.content);
            }
        };

        /**
         * Microloader
         * @type {Array}
         * @private
         */
        var _listeners = [],
        _loaded = false,
        Microloader = {
            init: function () {
                Ext.microloaded = true;

                // data-app is in the dev template for an application and is also
                // injected into the app my CMD for production
                // We use this to prefix localStorage cache to prevent collisions
                var microloaderElement = document.getElementById('microloader');
                Microloader.appId = microloaderElement ? microloaderElement.getAttribute('data-app') : '';

                if (Ext.beforeLoad) {
                    postProcessor = Ext.beforeLoad(Ext.platformTags);
                }

                var readyHandler = Ext._beforereadyhandler;

                Ext._beforereadyhandler = function () {
                    if (Ext.Boot !== Boot) {
                        Ext.apply(Ext.Boot, Boot);
                        Ext.Boot = Boot;
                    }
                    if (readyHandler) {
                        readyHandler();
                    }
                };
            },

            applyCacheBuster: function(url) {
                var tstamp = new Date().getTime(),
                    sep = url.indexOf('?') === -1 ? '?' : '&';
                url = url + sep + "_dc=" + tstamp;
                return url;
            },

            run: function() {
                Microloader.init();
                var manifest = Ext.manifest;

                if (typeof manifest === "string") {
                    var extension = ".json",
                        url = manifest.indexOf(extension) === manifest.length - extension.length
                            ? manifest
                            : manifest + ".json",
                        key = getStorageKey(url),
                        content = LocalStorage.retrieveAsset(key);

                    // Manifest found in local storage, use this for immediate boot except in PhantomJS environments for building.
                    if (content) {
                            _debug("Manifest file, '" + url + "', was found in Local Storage");
                        manifest = new Manifest({
                            url: url,
                            content: content,
                            cached: true
                        });
                        if (postProcessor) {
                            postProcessor(manifest);
                        }
                        Microloader.load(manifest);


                    // Manifest is not in local storage. Fetch it from the server
                    } else {
                        Boot.fetch(Microloader.applyCacheBuster(url), function (result) {
                                _debug("Manifest file was not found in Local Storage, loading: " + url);
                            manifest = new Manifest({
                                url: url,
                                content: result.content
                            });

                            manifest.cache();
                            if (postProcessor) {
                                postProcessor(manifest);
                            }
                            Microloader.load(manifest);
                        });
                    }

                // Embedded Manifest into JS file
                } else {
                        _debug("Manifest was embedded into application javascript file");
                    manifest = new Manifest({
                        content: manifest
                    });
                    Microloader.load(manifest);
                }
            },

            /**
             * @param {Manifest} manifest
             */
            load: function (manifest) {
                Microloader.urls = [];
                Microloader.manifest = manifest;
                Ext.manifest = Microloader.manifest.exportContent();

                var assets = manifest.getAssets(),
                    cachedAssets = [],
                    asset, i, len, include, entry;

                for (len = assets.length, i = 0; i < len; i++) {
                    asset = assets[i];
                    include = Microloader.filterAsset(asset);
                    if (include) {
                        // Asset is using the localStorage caching system
                        if (manifest.shouldCache() && asset.shouldCache()) {
                            // Asset already has content from localStorage, instantly seed that into boot
                            if (asset.content) {
                                    _debug("Asset: " + asset.assetConfig.path + " was found in local storage. No remote load for this file");
                                entry = Boot.registerContent(asset.assetConfig.path, asset.type, asset.content);
                                if (entry.evaluated) {
                                    _warn("Asset: " + asset.assetConfig.path + " was evaluated prior to local storage being consulted.");
                                }
                            //load via AJAX and seed content into Boot
                            } else {
                                    _debug("Asset: " + asset.assetConfig.path + " was NOT found in local storage. Adding to load queue");
                                cachedAssets.push(asset);
                            }
                        }
                        Microloader.urls.push(asset.assetConfig.path);
                        Boot.assetConfig[asset.assetConfig.path] = Boot.apply({type: asset.type}, asset.assetConfig);
                    }
                }

                // If any assets are using the caching system and do not have local versions load them first via AJAX
                if (cachedAssets.length > 0) {
                    Microloader.remainingCachedAssets = cachedAssets.length;
                    while (cachedAssets.length > 0) {
                        asset = cachedAssets.pop();
                            _debug("Preloading/Fetching Cached Assets from: " + asset.assetConfig.path);
                        Boot.fetch(asset.assetConfig.path, (function(asset) {
                            return function(result) {
                                Microloader.onCachedAssetLoaded(asset, result);
                            }
                        })(asset));
                    }
                } else {
                    Microloader.onCachedAssetsReady();
                }
            },

            // Load the asset and seed its content into Boot to be evaluated in sequence
            onCachedAssetLoaded: function (asset, result) {
                var checksum;
                result = Microloader.parseResult(result);
                Microloader.remainingCachedAssets--;

                if (!result.error) {
                    checksum = Microloader.checksum(result.content, asset.assetConfig.hash);
                    if (!checksum) {
                        _warn("Cached Asset '" + asset.assetConfig.path + "' has failed checksum. This asset will be uncached for future loading");

                        // Un cache this asset so it is loaded next time
                        asset.uncache();
                    }

                        _debug("Checksum for Cached Asset: " + asset.assetConfig.path + " is " + checksum);
                    Boot.registerContent(asset.assetConfig.path, asset.type, result.content);
                    asset.updateContent(result.content);
                    asset.cache();
                } else {
                    _warn("There was an error pre-loading the asset '" + asset.assetConfig.path + "'. This asset will be uncached for future loading");

                    // Un cache this asset so it is loaded next time
                    asset.uncache();
                }

                if (Microloader.remainingCachedAssets === 0) {
                    Microloader.onCachedAssetsReady();
                }
            },

            onCachedAssetsReady: function(){
                Boot.load({
                    url: Microloader.urls,
                    loadOrder: Microloader.manifest.loadOrder,
                    loadOrderMap: Microloader.manifest.loadOrderMap,
                    sequential: true,
                    success: Microloader.onAllAssetsReady,
                    failure: Microloader.onAllAssetsReady
                });
            },

            onAllAssetsReady: function() {
                _loaded = true;
                Microloader.notify();

                if (navigator.onLine !== false) {
                        _debug("Application is online, checking for updates");
                    Microloader.checkAllUpdates();
                }
                else {
                        _debug("Application is offline, adding online listener to check for updates");
                    if(window['addEventListener']) {
                        window.addEventListener('online', Microloader.checkAllUpdates, false);
                    }
                }
            },

            onMicroloaderReady: function (listener) {
                if (_loaded) {
                    listener();
                } else {
                    _listeners.push(listener);
                }
            },

            /**
             * @private
             */
            notify: function () {
                    _debug("notifying microloader ready listeners.");
                var listener;
                while((listener = _listeners.shift())) {
                    listener();
                }
            },

            // Delta patches content
            patch: function (content, delta) {
                var output = [],
                    chunk, i, ln;

                if (delta.length === 0) {
                    return content;
                }

                for (i = 0,ln = delta.length; i < ln; i++) {
                    chunk = delta[i];

                    if (typeof chunk === 'number') {
                        output.push(content.substring(chunk, chunk + delta[++i]));
                    }
                    else {
                        output.push(chunk);
                    }
                }

                return output.join('');
            },

            checkAllUpdates: function() {
                    _debug("Checking for All Updates");
                if(window['removeEventListener']) {
                    window.removeEventListener('online', Microloader.checkAllUpdates, false);
                }

                if(_cache) {
                    Microloader.checkForAppCacheUpdate();
                }

                // Manifest came from a cached instance, check for updates
                if (Microloader.manifest.fromCache) {
                    Microloader.checkForUpdates();
                }
            },

            checkForAppCacheUpdate: function() {
                    _debug("Checking App Cache status");
                if (_cache.status === _cache.UPDATEREADY || _cache.status === _cache.OBSOLETE) {
                        _debug("App Cache is already in an updated");
                    Microloader.appCacheState = 'updated';
                } else if (_cache.status !== _cache.IDLE && _cache.status !== _cache.UNCACHED) {
                        _debug("App Cache is checking or downloading updates, adding listeners");
                    Microloader.appCacheState = 'checking';
                    _cache.addEventListener('error', Microloader.onAppCacheError);
                    _cache.addEventListener('noupdate', Microloader.onAppCacheNotUpdated);
                    _cache.addEventListener('cached', Microloader.onAppCacheNotUpdated);
                    _cache.addEventListener('updateready', Microloader.onAppCacheReady);
                    _cache.addEventListener('obsolete', Microloader.onAppCacheObsolete);
                } else {
                        _debug("App Cache is current or uncached");
                    Microloader.appCacheState = 'current';
                }
            },

            checkForUpdates: function() {
                // Fetch the Latest Manifest from the server
                    _debug("Checking for updates at: " + Microloader.manifest.url);
                Boot.fetch(Microloader.applyCacheBuster(Microloader.manifest.url), Microloader.onUpdatedManifestLoaded);
            },

            onAppCacheError: function(e) {
                _warn(e.message);

                Microloader.appCacheState = 'error';
                Microloader.notifyUpdateReady();
            },

            onAppCacheReady: function() {
                _cache.swapCache();
                Microloader.appCacheUpdated();
            },

            onAppCacheObsolete: function() {
                Microloader.appCacheUpdated();
            },

            appCacheUpdated: function() {
                    _debug("App Cache Updated");
                Microloader.appCacheState = 'updated';
                Microloader.notifyUpdateReady();
            },

            onAppCacheNotUpdated: function() {
                    _debug("App Cache Not Updated Callback");
                Microloader.appCacheState = 'current';
                Microloader.notifyUpdateReady();
            },


            filterAsset: function(asset) {
                var cfg = (asset && asset.assetConfig) || {};
                if(cfg.platform || cfg.exclude) {
                    return Boot.filterPlatform(cfg.platform, cfg.exclude);
                }
                return true;
            },

            onUpdatedManifestLoaded: function (result) {
                result = Microloader.parseResult(result);

                if (!result.error) {
                    var currentAssets, newAssets, currentAsset, newAsset, prop,
                        assets, deltas, deltaPath, include,
                        updatingAssets = [],
                        manifest = new Manifest({
                            url: Microloader.manifest.url,
                            content: result.content,
                            assetCache: false
                        });

                    Microloader.remainingUpdatingAssets = 0;
                    Microloader.updatedAssets = [];
                    Microloader.removedAssets = [];
                    Microloader.updatedManifest = null;
                    Microloader.updatedAssetsReady = false;

                    // If the updated manifest has turned off caching we need to clear out all local storage
                    // and trigger a appupdate as all content is now uncached
                    if (!manifest.shouldCache()) {
                        _debug("New Manifest has caching disabled, clearing out any private storage");

                        Microloader.updatedManifest = manifest;
                        LocalStorage.clearAllPrivate(manifest);
                        Microloader.onAllUpdatedAssetsReady();
                        return;
                    }

                    // Manifest itself has changed
                    if (!Microloader.manifest.is(manifest)) {
                        Microloader.updatedManifest = manifest;

                        currentAssets = Microloader.manifest.getAssets();
                        newAssets = manifest.getAssets();

                        // Look through new assets for assets that do not exist or assets that have different versions
                        for (prop in newAssets) {
                            newAsset = newAssets[prop];
                            currentAsset = Microloader.manifest.getAsset(newAsset.assetConfig.path);
                            include = Microloader.filterAsset(newAsset);

                            if (include && (!currentAsset || (newAsset.shouldCache() && (!currentAsset.is(newAsset))))) {
                                    _debug("New/Updated Version of Asset: " + newAsset.assetConfig.path + " was found in new manifest");
                                updatingAssets.push({_new: newAsset, _current: currentAsset});
                            }
                        }

                        // Look through current assets for stale/old assets that have been removed
                        for (prop in currentAssets) {
                            currentAsset = currentAssets[prop];
                            newAsset = manifest.getAsset(currentAsset.assetConfig.path);

                            //New version of this asset has been filtered out
                            include = !Microloader.filterAsset(newAsset);

                            if (!include || !newAsset || (currentAsset.shouldCache() && !newAsset.shouldCache())) {
                                    _debug("Asset: " + currentAsset.assetConfig.path + " was not found in new manifest, has been filtered out or has been switched to not cache. Marked for removal");
                                Microloader.removedAssets.push(currentAsset);
                            }
                        }

                        // Loop through all assets that need updating
                        if (updatingAssets.length > 0) {
                            Microloader.remainingUpdatingAssets = updatingAssets.length;
                            while (updatingAssets.length > 0) {
                                assets = updatingAssets.pop();
                                newAsset = assets._new;
                                currentAsset = assets._current;

                                // Full Updates will simply download the file and replace its current content
                                if (newAsset.assetConfig.update === "full" || !currentAsset) {

                                    if (newAsset.assetConfig.update === "delta") {
                                        _debug("Delta updated asset found without current asset available: " + newAsset.assetConfig.path + " fetching full file");
                                    } else {
                                        _debug("Full update found for: " + newAsset.assetConfig.path + " fetching");
                                    }

                                    // Load the asset and cache its  its content into Boot to be evaluated in sequence
                                    Boot.fetch(newAsset.assetConfig.path, (function (asset) {
                                            return function (result) {
                                                Microloader.onFullAssetUpdateLoaded(asset, result)
                                            };
                                        }(newAsset))
                                    );

                                    // Delta updates will be given a delta patch
                                } else if (newAsset.assetConfig.update === "delta") {
                                    deltas = manifest.deltas;
                                    deltaPath = deltas + "/" + newAsset.assetConfig.path + "/" + currentAsset.assetConfig.hash + ".json";
                                    // Fetch the Delta Patch and update the contents of the asset
                                        _debug("Delta update found for: " + newAsset.assetConfig.path + " fetching");
                                    Boot.fetch(deltaPath,
                                        (function (asset, oldAsset) {
                                            return function (result) {
                                                Microloader.onDeltaAssetUpdateLoaded(asset, oldAsset, result)
                                            };
                                        }(newAsset, currentAsset))
                                    );
                                }
                            }
                        } else {
                                _debug("No Assets needed updating");
                            Microloader.onAllUpdatedAssetsReady();
                        }
                    } else {
                            _debug("Manifest files have matching hash's");
                        Microloader.onAllUpdatedAssetsReady();
                    }
                } else {
                    _warn("Error loading manifest file to check for updates");
                    Microloader.onAllUpdatedAssetsReady();
                }
            },

            onFullAssetUpdateLoaded: function(asset, result) {
                var checksum;
                result = Microloader.parseResult(result);
                Microloader.remainingUpdatingAssets--;

                if (!result.error) {
                    checksum = Microloader.checksum(result.content, asset.assetConfig.hash);
                        _debug("Checksum for Full asset: " + asset.assetConfig.path + " is " + checksum);
                    if (!checksum) {
                            _debug("Full Update Asset: " + asset.assetConfig.path + " has failed checksum. This asset will be uncached for future loading");

                        // uncache this asset as there is a new version somewhere that has not been loaded.
                        asset.uncache();
                    } else {
                        asset.updateContent(result.content);
                        Microloader.updatedAssets.push(asset);
                    }
                } else {
                        _debug("Error loading file at" + asset.assetConfig.path + ". This asset will be uncached for future loading");

                    // uncache this asset as there is a new version somewhere that has not been loaded.
                    asset.uncache();
                }

                if (Microloader.remainingUpdatingAssets === 0) {
                        Microloader.onAllUpdatedAssetsReady();
                }
            },

            onDeltaAssetUpdateLoaded: function(asset, oldAsset, result) {
                var json, checksum, content;
                result = Microloader.parseResult(result);
                Microloader.remainingUpdatingAssets--;

                if (!result.error) {
                        _debug("Delta patch loaded successfully, patching content");
                    try {
                        json = JSON.parse(result.content);
                        content = Microloader.patch(oldAsset.content, json);
                        checksum = Microloader.checksum(content, asset.assetConfig.hash);
                            _debug("Checksum for Delta Patched asset: " + asset.assetConfig.path + " is " + checksum);
                        if (!checksum) {
                                _debug("Delta Update Asset: " + asset.assetConfig.path + " has failed checksum. This asset will be uncached for future loading");

                            // uncache this asset as there is a new version somewhere that has not been loaded.
                            asset.uncache();
                        } else {
                            asset.updateContent(content);
                            Microloader.updatedAssets.push(asset);
                        }
                    } catch (e) {
                        _warn("Error parsing delta patch for " + asset.assetConfig.path + " with hash " + oldAsset.assetConfig.hash + " . This asset will be uncached for future loading");
                        // uncache this asset as there is a new version somewhere that has not been loaded.
                        asset.uncache();
                    }
                } else {
                    _warn("Error loading delta patch for " + asset.assetConfig.path + " with hash " + oldAsset.assetConfig.hash + " . This asset will be uncached for future loading");

                    // uncache this asset as there is a new version somewhere that has not been loaded.
                    asset.uncache();
                }
                if (Microloader.remainingUpdatingAssets === 0) {
                    Microloader.onAllUpdatedAssetsReady();
                }
            },

            //TODO: Make this all transaction based to allow for reverting if quota is exceeded
            onAllUpdatedAssetsReady: function() {
                var asset;
                Microloader.updatedAssetsReady = true;

                if (Microloader.updatedManifest) {
                    while (Microloader.removedAssets.length > 0) {
                        asset = Microloader.removedAssets.pop();
                            _debug("Asset: " + asset.assetConfig.path + " was removed, un-caching");
                        asset.uncache();
                    }

                    if (Microloader.updatedManifest) {
                        _debug("Manifest was updated, re-caching");
                        Microloader.updatedManifest.cache();
                    }

                    while (Microloader.updatedAssets.length > 0) {
                        asset = Microloader.updatedAssets.pop();
                            _debug("Asset: " + asset.assetConfig.path + " was updated, re-caching");
                        asset.cache();
                    }

                }

                Microloader.notifyUpdateReady();
            },

            notifyUpdateReady: function () {
                if (Microloader.appCacheState !== 'checking' && Microloader.updatedAssetsReady) {
                    if (Microloader.appCacheState === 'updated' || Microloader.updatedManifest) {
                            _debug("There was an update here you will want to reload the app, trigger an event");
                        Microloader.appUpdate = {
                            updated: true,
                            app: Microloader.appCacheState === 'updated',
                            manifest: Microloader.updatedManifest && Microloader.updatedManifest.exportContent()
                        };

                        Microloader.fireAppUpdate();
                    }
                    else {
                        _debug("AppCache and LocalStorage Cache are current, no updating needed");
                        Microloader.appUpdate = {};
                    }
                }
            },

            fireAppUpdate: function() {
                if (Ext.GlobalEvents) {
                    // We defer dispatching this event slightly in order to let the application finish loading
                    // as we are still very early in the lifecycle
                    Ext.defer(function() {
                        Ext.GlobalEvents.fireEvent('appupdate', Microloader.appUpdate);
                    }, 100);
                }
            },

            checksum: function(content, hash) {
                if(!content || !hash) {
                    return false;
                }

                var passed = true,
                    hashLn = hash.length,
                    checksumType = content.substring(0, 1);

                if (checksumType == '/') {
                    if (content.substring(2, hashLn + 2) !== hash) {
                        passed = false;
                    }
                } else if (checksumType == 'f') {
                    if (content.substring(10, hashLn + 10) !== hash) {
                        passed = false;
                    }
                } else if (checksumType == '.') {
                    if (content.substring(1, hashLn + 1) !== hash) {
                        passed = false;
                    }
                }
                return passed;
            },
            parseResult: function(result) {
                var rst = {};
                if ((result.exception || result.status === 0) && !Boot.env.phantom) {
                    rst.error = true;
                } else if ((result.status >= 200 && result.status < 300) || result.status === 304
                    || Boot.env.phantom
                    || (result.status === 0 && result.content.length > 0)
                ) {
                    rst.content = result.content;
                } else {
                    rst.error = true;
                }
                return rst;
            }
        };

    return Microloader;
}());

/**
 * @type {String/Object}
 */
Ext.manifest = Ext.manifest || "bootstrap";

Ext.Microloader.run();
