merchant_page.dart

class MerchantPage extends StatefulWidget {
  final Merchant? merchant;
  const MerchantPage({Key? key, this.merchant}) : super(key: key);

  @override
  _MerchantPageState createState() => _MerchantPageState();
}

class _MerchantPageState extends State<MerchantPage>
    with TickerProviderStateMixin {
  ScrollController _scrollController = ScrollController();
  double _scrollPosition = 0;
  _scrollListener() {
    setState(() {
      _scrollPosition = _scrollController.position.pixels;
    });
  }

  GridContainerData? _products;
  GridContainerData _getProductData() {
    return productGridContainerData;
  }

  @override
  void initState() {
    super.initState();
    _products = _getProductData();
    _scrollController.addListener(_scrollListener);
    // _tabController = TabController(length: categories.length, vsync: this);
  }

  @override
  Widget build(BuildContext context) {
    return SafeArea(
      child: Scaffold(
        backgroundColor: CustomColors.white,
        body: NestedScrollView(
          controller: _scrollController,
          headerSliverBuilder: (BuildContext context, bool innerBoxIsScrolled) {
            return [
              SliverOverlapAbsorber(
                handle:
                    NestedScrollView.sliverOverlapAbsorberHandleFor(context),
                sliver: SliverSafeArea(
                  sliver: MerchantSliverAppbar(merchant: widget.merchant!),
                ),
              )
            ];
          },
          body: FeedSliderContainer(),
        ),
        floatingActionButton: ChatButton(),
      ),
    );
  }
}