[LayaAir 1.0]laya接入fairyGUI的时候资源加载方式？

/**

 * FUI资源加载类

 * jhj

 * QQ:8510001

 * 2019-11-25

 */

export default class FguiResMgr {

    private static _instance: FguiResMgr;

    public static get instance(): FguiResMgr {

        if (!this._instance)

            this._instance = new FguiResMgr();

        return this._instance;

    }



    /**加载优先级，越小越优先，最小为0 */

    private priority: number = 1;



    /**

     * 混合加载 

     * @param resKey 

     * @param otherLoadData 

     * @param complete 

     * @param progress 

     * @param priority 

     */

    public load(resKey: string, otherLoadData: any, complete?: Laya.Handler, progress?: Laya.Handler, priority?: number) {

        if (priority) {

            this.priority = priority;

        } else {

            this.priority = 1;

        }

        if (progress) {

            progress.once = false;

        }

        let loadData: Array<any> = [

            { url: resKey + "." + fgui.UIConfig.packageFileExtension, type: Laya.Loader.BUFFER }

        ]

        Laya.loader.load(loadData, Laya.Handler.create(this, this.onLoadPackageComplete, [resKey, otherLoadData, complete, progress]));

    }



    private onLoadPackageComplete(resKey: string, otherLoadData: any, complete?: Laya.Handler, progress?: Laya.Handler) {

        let urlNames = resKey.split("/");

        let pkg: any = fgui.UIPackage.getByName(urlNames[urlNames.length - 1]);

        if (!pkg) {

            let descData: any = Laya.loader.getRes(resKey + "." + fgui.UIConfig.packageFileExtension);

            if (!descData) {

                this.onComplete(resKey, otherLoadData, complete, progress, loadData);

                return;

            }

            pkg = fgui.UIPackage.addPackage(resKey, descData);

        }



        let allatlas = {};

        var loadData = []; //var会声明提前



        for (let key in pkg._sprites) {

            if (pkg._sprites.hasOwnProperty(key)) {

                let element = pkg._sprites[key];

                if (!allatlas[element.atlas.file] && !Laya.loader.getRes(element.atlas.file)) {

                    allatlas[element.atlas.file] = element.atlas.file;

                    loadData.push({ url: element.atlas.file, type: Laya.Loader.IMAGE });

                }

            }

        }

        if (otherLoadData && otherLoadData.length > 0) {

            loadData = loadData.concat(otherLoadData);

        }

        for (var i = 0; i < loadData.length; i++) {

            if (Object.prototype.toString.call(loadData[i]) === "[object Object]") {

                loadData[i].priority = this.priority;

            }

        }

        Laya.loader.load(loadData, Laya.Handler.create(this, this.onComplete, [resKey, otherLoadData, complete, progress, loadData]), progress);

    }



    private onComplete(resKey: string, otherLoadData: any, complete?: Laya.Handler, progress?: Laya.Handler, loadData?: any) {

        if (progress) {

            let fun = progress;

            progress = null;

            fun.recover();

        }

        if (complete) {

            let fun = complete;

            complete = null;

            fun.runWith([resKey, loadData]);

            fun.recover();

        }

    }

}