//FEDERATED LOGIN

        private function login(provider:String):void
        {
            toggleIntro();
            activityDialog = Dialog.service.create(
                    new ActivityBuilder()
                        .setTheme( new DialogTheme( DialogTheme.DEVICE_DEFAULT_DARK ))
                        .build()
                    );
            activityDialog.show();

            trace("federated login init");

            var header:URLRequestHeader = new URLRequestHeader("Content-Type", "application/json");

            var obj:Object = new Object();
            obj.continueUri = FIREBASE_REDIRECT_URL;
            obj.providerId = provider;

            var rq:URLRequest = new URLRequest(FIREBASE_CREATE_AUTH_URL);
            rq.method = URLRequestMethod.POST;
            rq.data = JSON.stringify(obj);
            rq.requestHeaders.push(header);

            var l:URLLoader = new URLLoader();
            l.addEventListener(Event.COMPLETE, authUrlCreated);
            l.addEventListener(IOErrorEvent.IO_ERROR, handleIOError);
            l.load(rq);
        }

        private function handleIOError(e:IOErrorEvent):void
        {
            trace("IO Error" + e.currentTarget.data);

            if (signingIn)
            {
                phaseOut(password_txt, password_txt.x + ((stage.stageWidth / 2) - password_txt.width));
                phaseIn(email_txt, (stage.stageWidth -  email_txt.width) / 2);

                Dialog.service.toast("Your login credentials are incorrect.");
            }

        }

        private function authUrlCreated(e:Event):void
        {
            var raw:Object = JSON.parse(e.currentTarget.data);

            sessionId = raw.sessionId;

            swv = new StageWebView();
            swv.addEventListener(LocationChangeEvent.LOCATION_CHANGE, swvLocationChange);
            swv.stage = this.stage;
            swv.viewPort = new Rectangle(0, 0, stage.stageWidth, stage.stageHeight);

            activityDialog.dismiss();
            swv.loadURL(raw.authUri);

        }

        private function swvLocationChange(e:LocationChangeEvent):void
        {
            var location:String = swv.location;
            if (location.indexOf("/__/auth/handler?code=") != -1 || location.indexOf("/__/auth/handler?state=") != -1 || location.indexOf("/__/auth/handler#state=") != -1 && location.indexOf("error") == -1)
            {
                swv.removeEventListener(LocationChangeEvent.LOCATION_CHANGE, swvLocationChange);
                swv.dispose();
                trace("stagewebciew should be gone..");

                requestUri = location;
                getAccountInfo();
            }
        }

        private function getAccountInfo():void
        {
            var head:URLRequestHeader = new URLRequestHeader("Content-Type", "application/json");

            var obj:Object = new Object();
            obj.requestUri = requestUri;
            obj.sessionId = sessionId;
            obj.returnSecureToken = true;

            var rq:URLRequest = new URLRequest(FIREBASE_VERIFY_ASSERTION_URL);
            rq.method = URLRequestMethod.POST;
            rq.data = JSON.stringify(obj);
            rq.requestHeaders.push(head);

            var l:URLLoader = new URLLoader();
            l.addEventListener(Event.COMPLETE, registerComplete);
            l.addEventListener(IOErrorEvent.IO_ERROR, handleIOError);
            l.load(rq);
        }

        private function registerComplete(e:Event):void
        {
            trace("Registration complete:");
            trace(e.currentTarget.data);
            var rawData:Object = JSON.parse(e.currentTarget.data);

            idToken = rawData.idToken;
            authToken = rawData.oauthIdToken;
            uid = rawData.localId;

            trace("Attempting to get an access token..");

            //sUBMIT REFRESH token.
            appSavedData = new Object();
            appSavedData.refreshToken = rawData.refreshToken;
            var fs:FileStream = new FileStream();
                fs.open(appSaveFile, FileMode.WRITE);
                fs.writeObject(appSavedData);
                fs.close();

            handleRefreshToken(rawData.refreshToken);
        }


        private function handleRefreshToken(refreshToken:String):void
        {
            var header:URLRequestHeader = new URLRequestHeader("Content-Type", "application/json");
            var myObject:Object = new Object();
            myObject.grant_type = "refresh_token";
            myObject.refresh_token = refreshToken;
            var request:URLRequest = new URLRequest("https://securetoken.googleapis.com/v1/token?key="+FIREBASE_API_KEY);
            request.method = URLRequestMethod.POST;
            request.data = JSON.stringify(myObject);
            request.requestHeaders.push(header);
            var loader:URLLoader = new URLLoader();
            loader.addEventListener(Event.COMPLETE, refreshTokenLoaded);
            loader.addEventListener(IOErrorEvent.IO_ERROR, handleIOError);
            loader.load(request);
        }

        private function refreshTokenLoaded(e:Event):void
        {
            e.target.removeEventListener(Event.COMPLETE, refreshTokenLoaded);
            var rawData:Object = JSON.parse(e.currentTarget.data);

            if (rawData.access_token == null)
            {
                toggleContent(0);
                toggleIntro();
                Dialog.service.toast("There was a problem logging you in. Please try again.");
                FirebaseCrash.service.report(new Error("Login Error", 0));
            }
            else
            {
                authToken = rawData.access_token;
                trace("REFRESH TOKEN LOADED.");
                trace(e.target.data);

                trace("Init tutorial");

                if (signingIn)
                {
                    toggleContent(CONTENT_FRAME);
                    toggleHomeScreen();
                }
                else
                {
                    //Init bio fill//
                    toggleProfile(true);
                }
            }

        }