aman-kassa-flutter/lib/views/home/tabs/KassaTab.dart

import 'package:aman_kassa_flutter/core/models/ProductDao.dart';
import 'package:aman_kassa_flutter/redux/actions/main_actions.dart';
import 'package:aman_kassa_flutter/redux/store.dart';
import 'package:aman_kassa_flutter/shared/app_colors.dart';
import 'package:aman_kassa_flutter/shared/shared_styles.dart';
import 'package:aman_kassa_flutter/views/home/tabs/kassaView/CatalogBottomSheet.dart';
import 'package:aman_kassa_flutter/views/home/tabs/kassaView/ProductAddBottomSheet.dart';
import 'package:aman_kassa_flutter/widgets/components/ProductListItem.dart';
import 'package:flutter/material.dart';


List<String> litems = [
  "1",
  "2",
  "3",
  "4",
  "1",
  "2",
  "3",
  "4",
  "1",
  "2",
  "3",
  "4",
  "1"
];

class KassaTab extends StatelessWidget {

  final int index;

  KassaTab(this.index);

  Widget buildItem(BuildContext ctxt, int index) {
    return ProductListItem(
      item: new ProductDao(name: 'Наименование', count: 123, price: 2332.02),
    );
  }

  @override
  Widget build(BuildContext context) {
    return Padding(
      padding: EdgeInsets.all(4),
      child: Column(
        children: <Widget>[
          Row(
            children: <Widget>[
              Expanded(
                child: Padding(
                  padding: const EdgeInsets.all(4.0),
                  child: RaisedButton(
                    padding: EdgeInsets.all(8),
                    color: primaryColor,
                    child: Text(
                      "Добавить",
                      style: buttonBigTitleTextStyle,
                    ),
                    onPressed: () { showModalBottomSheetCatalog(context, 'add');},
                  ),
                ),
              ),
              Expanded(
                child: Padding(
                  padding: const EdgeInsets.all(4.0),
                  child: RaisedButton(
                    padding: EdgeInsets.all(8),
                    color: greenColor,
                    child: Text(
                      "Каталог",
                      style: buttonBigTitleTextStyle,
                    ),
                    onPressed: () { showModalBottomSheetCatalog(context, 'catalog');},
                  ),
                ),
              ),
            ],
          ),
          Expanded(
            child: Container(
              child: ListView.builder(
                  itemCount: litems.length,
                  itemBuilder: (BuildContext ctxt, int index) =>
                      buildItem(ctxt, index)),
            ),
          ),
          Row(
            children: <Widget>[
              Expanded(
                child: Padding(
                  padding: const EdgeInsets.all(4.0),
                  child: RaisedButton(
                    padding: EdgeInsets.all(8),
                    color: redColor,
                    child: Text(
                      "Возврат",
                      style: buttonBigTitleTextStyle,
                    ),
                    onPressed: () => null,
                  ),
                ),
              ),
              Expanded(
                child: Padding(
                  padding: const EdgeInsets.all(4.0),
                  child: RaisedButton(
                    padding: EdgeInsets.all(8),
                    color: greenColor,
                    child: Text(
                      "Оплата",
                      style: buttonBigTitleTextStyle,
                    ),
                    onPressed: () => null,
                  ),
                ),
              ),
            ],
          )
        ],
      ),
    );
  }

  void showModalBottomSheetCatalog(BuildContext context, String action) {
    showModalBottomSheet(
      context: context,
      isScrollControlled: true,
      backgroundColor: Colors.transparent,
      builder: (context){
        return DraggableScrollableSheet(
          initialChildSize: 0.8,
          maxChildSize: 0.95,
          minChildSize: 0.5,
          builder: (BuildContext context, ScrollController scrollController) {
            if( action == 'add') {
              return ProductAddBottomSheet();
            }  else {
              return CatalogBottomSheet(scrollController: scrollController,);
            }
          },
        );
      }
    );
  }


}