fineui/demo/js/core/abstract/combination/demo.loader.js

import { shortcut, Widget, deepClone, map, extend } from "@/core";

@shortcut()
export class Func extends Widget {
    static xtype = "demo.loader";

    props = { baseCls: "demo-func" };

    render() {
        const self = this;
        this.all = 0;
        const items = deepClone(Demo.CONSTANTS.ITEMS);

        return {
            type: "bi.loader",
            itemsCreator(options, populate) {
                setTimeout(() => {
                    populate(
                        map(items.slice((options.times - 1) * 10, options.times * 10), (i, v) =>
                            extend(v, {
                                type: "bi.single_select_item",
                                height: 25,
                            })
                        )
                    );
                }, 1000);
            },
            hasNext(options) {
                return options.times * 10 < items.length;
            },
        };
    }
}