/*
 *     Licensed to the Apache Software Foundation (ASF) under one
 *     or more contributor license agreements.  See the NOTICE file
 *     distributed with this work for additional information
 *     regarding copyright ownership.  The ASF licenses this file
 *     to you under the Apache License, Version 2.0 (the
 *     "License"); you may not use this file except in compliance
 *     with the License.  You may obtain a copy of the License at
 *
 *       http://www.apache.org/licenses/LICENSE-2.0
 *
 *     Unless required by applicable law or agreed to in writing,
 *     software distributed under the License is distributed on an
 *     "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 *     KIND, either express or implied.  See the License for the
 *     specific language governing permissions and limitations
 *     under the License.
 */

if (typeof Cordova === "undefined") {

/**
 * The order of events during page load and Cordova startup is as follows:
 *
 * onDOMContentLoaded         Internal event that is received when the web page is loaded and parsed.
 * window.onload              Body onload event.
 * onNativeReady              Internal event that indicates the Cordova native side is ready.
 * onCordovaInit             Internal event that kicks off creation of all Cordova JavaScript objects (runs constructors).
 * onCordovaReady            Internal event fired when all Cordova JavaScript objects have been created
 * onCordovaInfoReady        Internal event fired when device properties are available
 * onDeviceReady              User event fired to indicate that Cordova is ready
 * onResume                   User event fired to indicate a start/resume lifecycle event
 * onPause                    User event fired to indicate a pause lifecycle event
 * onDestroy                  Internal event fired when app is being destroyed (User should use window.onunload event, not this one).
 *
 * The only Cordova events that user code should register for are:
 *      deviceready           Cordova native code is initialized and Cordova APIs can be called from JavaScript
 *      pause                 App has moved to background
 *      resume                App has returned to foreground
 *
 * Listeners can be registered as:
 *      document.addEventListener("deviceready", myDeviceReadyListener, false);
 *      document.addEventListener("resume", myResumeListener, false);
 *      document.addEventListener("pause", myPauseListener, false);
 *
 * The DOM lifecycle events should be used for saving and restoring state
 *      window.onload
 *      window.onunload
 */

/**
 * This represents the Cordova API itself, and provides a global namespace for accessing
 * information about the state of Cordova.
 * @class
 */
var Cordova = {
    documentEventHandler: {},   // Collection of custom document event handlers
    windowEventHandler: {}      // Collection of custom window event handlers
};

/**
 * List of resource files loaded by Cordova.
 * This is used to ensure JS and other files are loaded only once.
 */
Cordova.resources = {base: true};

/**
 * Determine if resource has been loaded by Cordova
 *
 * @param name
 * @return
 */
Cordova.hasResource = function(name) {
    return Cordova.resources[name];
};

/**
 * Add a resource to list of loaded resources by Cordova
 *
 * @param name
 */
Cordova.addResource = function(name) {
    Cordova.resources[name] = true;
};

/**
 * Custom pub-sub channel that can have functions subscribed to it
 * @constructor
 */
Cordova.Channel = function (type)
{
    this.type = type;
    this.handlers = {};
    this.guid = 0;
    this.fired = false;
    this.enabled = true;
};

/**
 * Subscribes the given function to the channel. Any time that
 * Channel.fire is called so too will the function.
 * Optionally specify an execution context for the function
 * and a guid that can be used to stop subscribing to the channel.
 * Returns the guid.
 */
Cordova.Channel.prototype.subscribe = function(f, c, g) {
    // need a function to call
    if (f === null) { return; }

    var func = f;
    if (typeof c === "object" && typeof f === "function") { func = Cordova.close(c, f); }

    g = g || func.observer_guid || f.observer_guid || this.guid++;
    func.observer_guid = g;
    f.observer_guid = g;
    this.handlers[g] = func;
    return g;
};

/**
 * Like subscribe but the function is only called once and then it
 * auto-unsubscribes itself.
 */
Cordova.Channel.prototype.subscribeOnce = function(f, c) {
    var g = null;
    var _this = this;
    var m = function() {
        f.apply(c || null, arguments);
        _this.unsubscribe(g);
    };
    if (this.fired) {
        if (typeof c === "object" && typeof f === "function") { f = Cordova.close(c, f); }
        f.apply(this, this.fireArgs);
    } else {
        g = this.subscribe(m);
    }
    return g;
};

/**
 * Unsubscribes the function with the given guid from the channel.
 */
Cordova.Channel.prototype.unsubscribe = function(g) {
    if (typeof g === "function") { g = g.observer_guid; }
    this.handlers[g] = null;
    delete this.handlers[g];
};

/**
 * Calls all functions subscribed to this channel.
 */
Cordova.Channel.prototype.fire = function(e) {
    if (this.enabled) {
        var fail = false;
        var item, handler, rv;
        for (item in this.handlers) {
            if (this.handlers.hasOwnProperty(item)) {
                handler = this.handlers[item];
                if (typeof handler === "function") {
                    rv = (handler.apply(this, arguments) === false);
                    fail = fail || rv;
                }
            }
        }
        this.fired = true;
        this.fireArgs = arguments;
        return !fail;
    }
    return true;
};

/**
 * Calls the provided function only after all of the channels specified
 * have been fired.
 */
Cordova.Channel.join = function(h, c) {
    var i = c.length;
    var f = function() {
        if (!(--i)) {
            h();
        }
    };
    var len = i;
    var j;
    for (j=0; j<len; j++) {
        if (!c[j].fired) {
            c[j].subscribeOnce(f);
        }
        else {
            i--;
        }
    }
    if (!i) {
        h();
    }
};

/**
 * Add an initialization function to a queue that ensures it will run and initialize
 * application constructors only once Cordova has been initialized.
 * @param {Function} func The function callback you want run once Cordova is initialized
 */
Cordova.addConstructor = function(func) {
    Cordova.onCordovaInit.subscribeOnce(function() {
        try {
            func();
        } catch(e) {
            console.log("Failed to run constructor: " + e);
        }
    });
};

/**
 * Plugins object
 */
if (!window.plugins) {
    window.plugins = {};
}

/**
 * Adds a plugin object to window.plugins.
 * The plugin is accessed using window.plugins.<name>
 *
 * @param name          The plugin name
 * @param obj           The plugin object
 */
Cordova.addPlugin = function(name, obj) {
    if (!window.plugins[name]) {
        window.plugins[name] = obj;
    }
    else {
        console.log("Error: Plugin "+name+" already exists.");
    }
};

/**
 * onDOMContentLoaded channel is fired when the DOM content
 * of the page has been parsed.
 */
Cordova.onDOMContentLoaded = new Cordova.Channel('onDOMContentLoaded');

/**
 * onNativeReady channel is fired when the Cordova native code
 * has been initialized.
 */
Cordova.onNativeReady = new Cordova.Channel('onNativeReady');

/**
 * onCordovaInit channel is fired when the web page is fully loaded and
 * Cordova native code has been initialized.
 */
Cordova.onCordovaInit = new Cordova.Channel('onCordovaInit');

/**
 * onCordovaReady channel is fired when the JS Cordova objects have been created.
 */
Cordova.onCordovaReady = new Cordova.Channel('onCordovaReady');

/**
 * onCordovaInfoReady channel is fired when the Cordova device properties
 * has been set.
 */
Cordova.onCordovaInfoReady = new Cordova.Channel('onCordovaInfoReady');

/**
 * onCordovaConnectionReady channel is fired when the Cordova connection properties
 * has been set.
 */
Cordova.onCordovaConnectionReady = new Cordova.Channel('onCordovaConnectionReady');

/**
 * onDestroy channel is fired when the Cordova native code
 * is destroyed.  It is used internally.
 * Window.onunload should be used by the user.
 */
Cordova.onDestroy = new Cordova.Channel('onDestroy');
Cordova.onDestroy.subscribeOnce(function() {
    Cordova.shuttingDown = true;
});
Cordova.shuttingDown = false;

// _nativeReady is global variable that the native side can set
// to signify that the native code is ready. It is a global since
// it may be called before any Cordova JS is ready.
if (typeof _nativeReady !== 'undefined') { Cordova.onNativeReady.fire(); }

/**
 * onDeviceReady is fired only after all Cordova objects are created and
 * the device properties are set.
 */
Cordova.onDeviceReady = new Cordova.Channel('onDeviceReady');


// Array of channels that must fire before "deviceready" is fired
Cordova.deviceReadyChannelsArray = [ Cordova.onCordovaReady, Cordova.onCordovaInfoReady, Cordova.onCordovaConnectionReady];

// Hashtable of user defined channels that must also fire before "deviceready" is fired
Cordova.deviceReadyChannelsMap = {};

/**
 * Indicate that a feature needs to be initialized before it is ready to be used.
 * This holds up Cordova's "deviceready" event until the feature has been initialized
 * and Cordova.initComplete(feature) is called.
 *
 * @param feature {String}     The unique feature name
 */
Cordova.waitForInitialization = function(feature) {
    if (feature) {
        var channel = new Cordova.Channel(feature);
        Cordova.deviceReadyChannelsMap[feature] = channel;
        Cordova.deviceReadyChannelsArray.push(channel);
    }
};

/**
 * Indicate that initialization code has completed and the feature is ready to be used.
 *
 * @param feature {String}     The unique feature name
 */
Cordova.initializationComplete = function(feature) {
    var channel = Cordova.deviceReadyChannelsMap[feature];
    if (channel) {
        channel.fire();
    }
};

/**
 * Create all Cordova objects once page has fully loaded and native side is ready.
 */
Cordova.Channel.join(function() {

    // Start listening for XHR callbacks
    setTimeout(function() {
            if (Cordova.UsePolling) {
                Cordova.JSCallbackPolling();
            }
            else {
                var polling = prompt("usePolling", "gap_callbackServer:");
                Cordova.UsePolling = polling;
                if (polling == "true") {
                    Cordova.UsePolling = true;
                    Cordova.JSCallbackPolling();
                }
                else {
                    Cordova.UsePolling = false;
                    Cordova.JSCallback();
                }
            }
        }, 1);

    // Run Cordova constructors
    Cordova.onCordovaInit.fire();

    // Fire event to notify that all objects are created
    Cordova.onCordovaReady.fire();

    // Fire onDeviceReady event once all constructors have run and Cordova info has been
    // received from native side, and any user defined initialization channels.
    Cordova.Channel.join(function() {
        // Let native code know we are inited on JS side
        prompt("", "gap_init:");

        Cordova.onDeviceReady.fire();
    }, Cordova.deviceReadyChannelsArray);

}, [ Cordova.onDOMContentLoaded, Cordova.onNativeReady ]);

// Listen for DOMContentLoaded and notify our channel subscribers
document.addEventListener('DOMContentLoaded', function() {
    Cordova.onDOMContentLoaded.fire();
}, false);

// Intercept calls to document.addEventListener and watch for deviceready
Cordova.m_document_addEventListener = document.addEventListener;

// Intercept calls to window.addEventListener
Cordova.m_window_addEventListener = window.addEventListener;

/**
 * Add a custom window event handler.
 *
 * @param {String} event            The event name that callback handles
 * @param {Function} callback       The event handler
 */
Cordova.addWindowEventHandler = function(event, callback) {
    Cordova.windowEventHandler[event] = callback;
};

/**
 * Add a custom document event handler.
 *
 * @param {String} event            The event name that callback handles
 * @param {Function} callback       The event handler
 */
Cordova.addDocumentEventHandler = function(event, callback) {
    Cordova.documentEventHandler[event] = callback;
};

/**
 * Intercept adding document event listeners and handle our own
 *
 * @param {Object} evt
 * @param {Function} handler
 * @param capture
 */
document.addEventListener = function(evt, handler, capture) {
    var e = evt.toLowerCase();
    if (e === 'deviceready') {
        Cordova.onDeviceReady.subscribeOnce(handler);
    }
    else {
        // If subscribing to Android backbutton
        if (e === 'backbutton') {
            Cordova.exec(null, null, "App", "overrideBackbutton", [true]);
        }
        
        // If subscribing to an event that is handled by a plugin
        else if (typeof Cordova.documentEventHandler[e] !== "undefined") {
            if (Cordova.documentEventHandler[e](e, handler, true)) {
                return; // Stop default behavior
            }
        }
        
        Cordova.m_document_addEventListener.call(document, evt, handler, capture);
    }
};

/**
 * Intercept adding window event listeners and handle our own
 *
 * @param {Object} evt
 * @param {Function} handler
 * @param capture
 */
window.addEventListener = function(evt, handler, capture) {
    var e = evt.toLowerCase();
        
    // If subscribing to an event that is handled by a plugin
    if (typeof Cordova.windowEventHandler[e] !== "undefined") {
        if (Cordova.windowEventHandler[e](e, handler, true)) {
            return; // Stop default behavior
        }
    }
        
    Cordova.m_window_addEventListener.call(window, evt, handler, capture);
};

// Intercept calls to document.removeEventListener and watch for events that
// are generated by Cordova native code
Cordova.m_document_removeEventListener = document.removeEventListener;

// Intercept calls to window.removeEventListener
Cordova.m_window_removeEventListener = window.removeEventListener;

/**
 * Intercept removing document event listeners and handle our own
 *
 * @param {Object} evt
 * @param {Function} handler
 * @param capture
 */
document.removeEventListener = function(evt, handler, capture) {
    var e = evt.toLowerCase();

    // If unsubscribing to Android backbutton
    if (e === 'backbutton') {
        Cordova.exec(null, null, "App", "overrideBackbutton", [false]);
    }

    // If unsubcribing from an event that is handled by a plugin
    if (typeof Cordova.documentEventHandler[e] !== "undefined") {
        if (Cordova.documentEventHandler[e](e, handler, false)) {
            return; // Stop default behavior
        }
    }

    Cordova.m_document_removeEventListener.call(document, evt, handler, capture);
};

/**
 * Intercept removing window event listeners and handle our own
 *
 * @param {Object} evt
 * @param {Function} handler
 * @param capture
 */
window.removeEventListener = function(evt, handler, capture) {
    var e = evt.toLowerCase();

    // If unsubcribing from an event that is handled by a plugin
    if (typeof Cordova.windowEventHandler[e] !== "undefined") {
        if (Cordova.windowEventHandler[e](e, handler, false)) {
            return; // Stop default behavior
        }
    }

    Cordova.m_window_removeEventListener.call(window, evt, handler, capture);
};

/**
 * Method to fire document event
 *
 * @param {String} type             The event type to fire
 * @param {Object} data             Data to send with event
 */
Cordova.fireDocumentEvent = function(type, data) {
    var e = document.createEvent('Events');
    e.initEvent(type);
    if (data) {
        for (var i in data) {
            e[i] = data[i];
        }
    }
    document.dispatchEvent(e);
};

/**
 * Method to fire window event
 *
 * @param {String} type             The event type to fire
 * @param {Object} data             Data to send with event
 */
Cordova.fireWindowEvent = function(type, data) {
    var e = document.createEvent('Events');
    e.initEvent(type);
    if (data) {
        for (var i in data) {
            e[i] = data[i];
        }
    }
    window.dispatchEvent(e);
};

/**
 * Does a deep clone of the object.
 *
 * @param obj
 * @return {Object}
 */
Cordova.clone = function(obj) {
    var i, retVal;
    if(!obj) { 
        return obj;
    }
    
    if(obj instanceof Array){
        retVal = [];
        for(i = 0; i < obj.length; ++i){
            retVal.push(Cordova.clone(obj[i]));
        }
        return retVal;
    }
    
    if (typeof obj === "function") {
        return obj;
    }
    
    if(!(obj instanceof Object)){
        return obj;
    }
    
    if (obj instanceof Date) {
        return obj;
    }
    
    retVal = {};
    for(i in obj){
        if(!(i in retVal) || retVal[i] !== obj[i]) {
            retVal[i] = Cordova.clone(obj[i]);
        }
    }
    return retVal;
};

Cordova.callbackId = 0;
Cordova.callbacks = {};
Cordova.callbackStatus = {
    NO_RESULT: 0,
    OK: 1,
    CLASS_NOT_FOUND_EXCEPTION: 2,
    ILLEGAL_ACCESS_EXCEPTION: 3,
    INSTANTIATION_EXCEPTION: 4,
    MALFORMED_URL_EXCEPTION: 5,
    IO_EXCEPTION: 6,
    INVALID_ACTION: 7,
    JSON_EXCEPTION: 8,
    ERROR: 9
    };


/**
 * Execute a Cordova command.  It is up to the native side whether this action is synch or async.
 * The native side can return:
 *      Synchronous: PluginResult object as a JSON string
 *      Asynchrounous: Empty string ""
 * If async, the native side will Cordova.callbackSuccess or Cordova.callbackError,
 * depending upon the result of the action.
 *
 * @param {Function} success    The success callback
 * @param {Function} fail       The fail callback
 * @param {String} service      The name of the service to use
 * @param {String} action       Action to be run in Cordova
 * @param {Array.<String>} [args]     Zero or more arguments to pass to the method
 */
Cordova.exec = function(success, fail, service, action, args) {
    try {
        var callbackId = service + Cordova.callbackId++;
        if (success || fail) {
            Cordova.callbacks[callbackId] = {success:success, fail:fail};
        }

        var r = prompt(JSON.stringify(args), "gap:"+JSON.stringify([service, action, callbackId, true]));

        // If a result was returned
        if (r.length > 0) {
            eval("var v="+r+";");

            // If status is OK, then return value back to caller
            if (v.status === Cordova.callbackStatus.OK) {

                // If there is a success callback, then call it now with
                // returned value
                if (success) {
                    try {
                        success(v.message);
                    } catch (e) {
                        console.log("Error in success callback: " + callbackId  + " = " + e);
                    }

                    // Clear callback if not expecting any more results
                    if (!v.keepCallback) {
                        delete Cordova.callbacks[callbackId];
                    }
                }
                return v.message;
            }

            // If no result
            else if (v.status === Cordova.callbackStatus.NO_RESULT) {

                // Clear callback if not expecting any more results
                if (!v.keepCallback) {
                    delete Cordova.callbacks[callbackId];
                }
            }

            // If error, then display error
            else {
                console.log("Error: Status="+v.status+" Message="+v.message);

                // If there is a fail callback, then call it now with returned value
                if (fail) {
                    try {
                        fail(v.message);
                    }
                    catch (e1) {
                        console.log("Error in error callback: "+callbackId+" = "+e1);
                    }

                    // Clear callback if not expecting any more results
                    if (!v.keepCallback) {
                        delete Cordova.callbacks[callbackId];
                    }
                }
                return null;
            }
        }
    } catch (e2) {
        console.log("Error: "+e2);
    }
};

/**
 * Called by native code when returning successful result from an action.
 *
 * @param callbackId
 * @param args
 */
Cordova.callbackSuccess = function(callbackId, args) {
    if (Cordova.callbacks[callbackId]) {

        // If result is to be sent to callback
        if (args.status === Cordova.callbackStatus.OK) {
            try {
                if (Cordova.callbacks[callbackId].success) {
                    Cordova.callbacks[callbackId].success(args.message);
                }
            }
            catch (e) {
                console.log("Error in success callback: "+callbackId+" = "+e);
            }
        }

        // Clear callback if not expecting any more results
        if (!args.keepCallback) {
            delete Cordova.callbacks[callbackId];
        }
    }
};

/**
 * Called by native code when returning error result from an action.
 *
 * @param callbackId
 * @param args
 */
Cordova.callbackError = function(callbackId, args) {
    if (Cordova.callbacks[callbackId]) {
        try {
            if (Cordova.callbacks[callbackId].fail) {
                Cordova.callbacks[callbackId].fail(args.message);
            }
        }
        catch (e) {
            console.log("Error in error callback: "+callbackId+" = "+e);
        }

        // Clear callback if not expecting any more results
        if (!args.keepCallback) {
            delete Cordova.callbacks[callbackId];
        }
    }
};

Cordova.JSCallbackPort = null;
Cordova.JSCallbackToken = null;

/**
 * This is only for Android.
 *
 * Internal function that uses XHR to call into Cordova Java code and retrieve
 * any JavaScript code that needs to be run.  This is used for callbacks from
 * Java to JavaScript.
 */
Cordova.JSCallback = function() {

    // Exit if shutting down app
    if (Cordova.shuttingDown) {
        return;
    }

    // If polling flag was changed, start using polling from now on
    if (Cordova.UsePolling) {
        Cordova.JSCallbackPolling();
        return;
    }

    var xmlhttp = new XMLHttpRequest();

    // Callback function when XMLHttpRequest is ready
    xmlhttp.onreadystatechange=function(){
        if(xmlhttp.readyState === 4){

            // Exit if shutting down app
            if (Cordova.shuttingDown) {
                return;
            }

            // If callback has JavaScript statement to execute
            if (xmlhttp.status === 200) {

                // Need to url decode the response
                var msg = decodeURIComponent(xmlhttp.responseText);
                setTimeout(function() {
                    try {
                        var t = eval(msg);
                    }
                    catch (e) {
                        // If we're getting an error here, seeing the message will help in debugging
                        console.log("JSCallback: Message from Server: " + msg);
                        console.log("JSCallback Error: "+e);
                    }
                }, 1);
                setTimeout(Cordova.JSCallback, 1);
            }

            // If callback ping (used to keep XHR request from timing out)
            else if (xmlhttp.status === 404) {
                setTimeout(Cordova.JSCallback, 10);
            }

            // If security error
            else if (xmlhttp.status === 403) {
                console.log("JSCallback Error: Invalid token.  Stopping callbacks.");
            }

            // If server is stopping
            else if (xmlhttp.status === 503) {
                console.log("JSCallback Server Closed: Stopping callbacks.");
            }

            // If request wasn't GET
            else if (xmlhttp.status === 400) {
                console.log("JSCallback Error: Bad request.  Stopping callbacks.");
            }

            // If error, revert to polling
            else {
                console.log("JSCallback Error: Request failed.");
                Cordova.UsePolling = true;
                Cordova.JSCallbackPolling();
            }
        }
    };

    if (Cordova.JSCallbackPort === null) {
        Cordova.JSCallbackPort = prompt("getPort", "gap_callbackServer:");
    }
    if (Cordova.JSCallbackToken === null) {
        Cordova.JSCallbackToken = prompt("getToken", "gap_callbackServer:");
    }
    xmlhttp.open("GET", "http://127.0.0.1:"+Cordova.JSCallbackPort+"/"+Cordova.JSCallbackToken , true);
    xmlhttp.send();
};

/**
 * The polling period to use with JSCallbackPolling.
 * This can be changed by the application.  The default is 50ms.
 */
Cordova.JSCallbackPollingPeriod = 50;

/**
 * Flag that can be set by the user to force polling to be used or force XHR to be used.
 */
Cordova.UsePolling = false;    // T=use polling, F=use XHR

/**
 * This is only for Android.
 *
 * Internal function that uses polling to call into Cordova Java code and retrieve
 * any JavaScript code that needs to be run.  This is used for callbacks from
 * Java to JavaScript.
 */
Cordova.JSCallbackPolling = function() {

    // Exit if shutting down app
    if (Cordova.shuttingDown) {
        return;
    }

    // If polling flag was changed, stop using polling from now on
    if (!Cordova.UsePolling) {
        Cordova.JSCallback();
        return;
    }

    var msg = prompt("", "gap_poll:");
    if (msg) {
        setTimeout(function() {
            try {
                var t = eval(""+msg);
            }
            catch (e) {
                console.log("JSCallbackPolling: Message from Server: " + msg);
                console.log("JSCallbackPolling Error: "+e);
            }
        }, 1);
        setTimeout(Cordova.JSCallbackPolling, 1);
    }
    else {
        setTimeout(Cordova.JSCallbackPolling, Cordova.JSCallbackPollingPeriod);
    }
};

/**
 * Create a UUID
 *
 * @return {String}
 */
Cordova.createUUID = function() {
    return Cordova.UUIDcreatePart(4) + '-' +
        Cordova.UUIDcreatePart(2) + '-' +
        Cordova.UUIDcreatePart(2) + '-' +
        Cordova.UUIDcreatePart(2) + '-' +
        Cordova.UUIDcreatePart(6);
};

Cordova.UUIDcreatePart = function(length) {
    var uuidpart = "";
    var i, uuidchar;
    for (i=0; i<length; i++) {
        uuidchar = parseInt((Math.random() * 256),0).toString(16);
        if (uuidchar.length === 1) {
            uuidchar = "0" + uuidchar;
        }
        uuidpart += uuidchar;
    }
    return uuidpart;
};

Cordova.close = function(context, func, params) {
    if (typeof params === 'undefined') {
        return function() {
            return func.apply(context, arguments);
        };
    } else {
        return function() {
            return func.apply(context, params);
        };
    }
};

/**
 * Load a JavaScript file after page has loaded.
 *
 * @param {String} jsfile               The url of the JavaScript file to load.
 * @param {Function} successCallback    The callback to call when the file has been loaded.
 */
Cordova.includeJavascript = function(jsfile, successCallback) {
    var id = document.getElementsByTagName("head")[0];
    var el = document.createElement('script');
    el.type = 'text/javascript';
    if (typeof successCallback === 'function') {
        el.onload = successCallback;
    }
    el.src = jsfile;
    id.appendChild(el);
};

/** 
 * Legacy variable for old plugins.
 */
var PhoneGap = Cordova;
}