fcs/lib/pages/carton/carton_cargo_table.dart

import 'package:fcs/domain/entities/cargo_type.dart';
import 'package:fcs/helpers/theme.dart';
import 'package:fcs/pages/main/util.dart';
import 'package:fcs/pages/widgets/local_text.dart';
import 'package:fcs/pages/widgets/my_data_table.dart';
import 'package:flutter/cupertino.dart';
import 'package:flutter/material.dart';

import 'cargo_type_editor.dart';
import 'total_weight_edit.dart';

typedef OnAdd(CargoType cargoType);
typedef OnRemove(CargoType cargoType);

class CargoTable extends StatefulWidget {
  final List<CargoType> cargoTypes;
  final OnAdd onAdd;
  final OnRemove onRemove;

  const CargoTable({Key key, this.cargoTypes, this.onAdd, this.onRemove})
      : super(key: key);

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

class _CargoTableState extends State<CargoTable> {
  double totalWeight = 0;
  List<CargoType> _cargos = [];
  double remainingWeight = 0;

  @override
  Widget build(BuildContext context) {
    remainingWeight =
        widget.cargoTypes.length == 0 ? this.totalWeight : remainingWeight;
    this._cargos = widget.cargoTypes.length == 0 ? [] : this._cargos;

    return MyDataTable(
      headingRowHeight: 40,
      columns: [
        MyDataColumn(
          label: LocalText(
            context,
            "cargo.type",
            color: Colors.grey,
          ),
        ),
        MyDataColumn(
          label: LocalText(
            context,
            "cargo.weight",
            color: Colors.grey,
          ),
        ),
      ],
      rows: getCargoRows(context),
    );
  }

  List<MyDataRow> getCargoRows(BuildContext context) {
    if (widget.cargoTypes == null) {
      return [];
    }
    List<String> _list = [];
    List<String> _types = [];

    var rows = widget.cargoTypes.map((c) {
      return MyDataRow(
        onSelectChanged: (bool selected) async {
          if (this.totalWeight <= 0) {
            showMsgDialog(context, "Error", "Please insert total weight");
            return;
          }

          if (c.isCutomDuty) return;
          CargoType cargo = await Navigator.push<CargoType>(
              context,
              CupertinoPageRoute(
                  builder: (context) => CargoTypeEditor(
                        cargo: c,
                      )));
          if (widget.onAdd != null) widget.onAdd(cargo);
          if (cargo == null) return;

          this._cargos.add(cargo);
          if (this.remainingWeight <= 0) return;
          this.remainingWeight -= cargo.weight;

          this._cargos.forEach((c) {
            _list.add(c.name);
          });
          widget.cargoTypes.forEach((c) {
            _types.add(c.name);
          });

          if (this._cargos.length == widget.cargoTypes.length - 1) {
            _types.forEach((t) {
              if (!_list.contains(t)) {
                widget.cargoTypes.forEach((c) {
                  if (c.name == t) {
                    c.weight = this.remainingWeight;
                  }
                });
              }
            });
          }
        },
        cells: [
          MyDataCell(Row(
            children: [
              new Text(
                c.name == null ? "" : c.name,
                style: textStyle,
              ),
              new Text(
                c.qty == null ? "" : " x ${c.qty.toString()}",
                style: TextStyle(color: Colors.grey),
              ),
            ],
          )),
          MyDataCell(
            Row(
              mainAxisAlignment: MainAxisAlignment.end,
              children: [
                Text(c.weight == null ? "0.00" : c.weight.toStringAsFixed(2),
                    style: textStyle),
                widget.onRemove == null
                    ? SizedBox(
                        width: 50,
                      )
                    : IconButton(
                        icon: Icon(
                          Icons.remove_circle,
                          color: primaryColor,
                        ),
                        onPressed: () {
                          if (widget.onRemove != null) widget.onRemove(c);
                        })
              ],
            ),
          ),
        ],
      );
    }).toList();

    var totalRow = MyDataRow(
      onSelectChanged: (bool selected) {},
      cells: [
        MyDataCell(Align(
          alignment: Alignment.centerRight,
          child: LocalText(
            context,
            "shipment.cargo.total",
            color: Colors.black87,
            fontWeight: FontWeight.bold,
          ),
        )),
        MyDataCell(
          Padding(
            padding: const EdgeInsets.only(right: 40.0),
            child: Align(
                alignment: Alignment.centerRight,
                child: InkWell(
                  onTap: () async {
                    double _t = await Navigator.of(context).push<double>(
                        CupertinoPageRoute(
                            builder: (context) =>
                                TotalWeightEdit(totalWeight: totalWeight)));
                    if (_t == null) return;
                    setState(() {
                      totalWeight = _t;
                      remainingWeight = totalWeight;
                    });
                  },
                  child: Container(
                    padding: const EdgeInsets.all(7.0),
                    decoration: BoxDecoration(
                      border: Border.all(color: primaryColor),
                      borderRadius: BorderRadius.all(Radius.circular(5.0)),
                    ),
                    child: Text(totalWeight.toStringAsFixed(2),
                        style: TextStyle(fontWeight: FontWeight.bold)),
                  ),
                )),
          ),
        ),
      ],
    );
    rows.add(totalRow);
    return rows;
  }

  double getRemainBalance(double total) {
    double _r = this.totalWeight < total ? 0 : this.totalWeight - total;
    return _r;
  }

  List<MyDataRow> _getCargoRows(BuildContext context) {
    if (widget.cargoTypes == null) {
      return [];
    }
    double total = 0;
    var rows = widget.cargoTypes.map((c) {
      total += c.weight;
      return MyDataRow(
        onSelectChanged: (bool selected) async {
          CargoType cargo = await Navigator.push<CargoType>(
              context,
              CupertinoPageRoute(
                  builder: (context) => CargoTypeEditor(
                        cargo: c,
                      )));
          if (widget.onAdd != null) widget.onAdd(cargo);
        },
        cells: [
          MyDataCell(new Text(
            c.name == null ? "" : c.name,
            style: textStyle,
          )),
          MyDataCell(
            Row(
              mainAxisAlignment: MainAxisAlignment.end,
              children: [
                Text(c.weight == null ? "0" : c.weight.toStringAsFixed(2),
                    style: textStyle),
                widget.onRemove == null
                    ? SizedBox(
                        width: 50,
                      )
                    : IconButton(
                        icon: Icon(
                          Icons.remove_circle,
                          color: primaryColor,
                        ),
                        onPressed: () {
                          if (widget.onRemove != null) widget.onRemove(c);
                        })
              ],
            ),
          ),
        ],
      );
    }).toList();

    var totalRow = MyDataRow(
      onSelectChanged: (bool selected) {},
      cells: [
        MyDataCell(Align(
          alignment: Alignment.centerRight,
          child: LocalText(
            context,
            "shipment.cargo.total",
            color: Colors.black87,
            fontWeight: FontWeight.bold,
          ),
        )),
        MyDataCell(
          Padding(
            padding: const EdgeInsets.only(right: 48.0),
            child: Align(
                alignment: Alignment.centerRight,
                child: Text(total.toStringAsFixed(2),
                    style: TextStyle(fontWeight: FontWeight.bold))),
          ),
        ),
      ],
    );
    rows.add(totalRow);
    return rows;
  }
}