fis_lib_measure/lib/view/measure/custom_item_buttons/combo.dart

import 'package:fis_measure/interfaces/process/items/item_metas.dart';
import 'package:fis_measure/interfaces/process/items/types.dart';
import 'package:fis_ui/index.dart';
import 'package:fis_ui/interface/interactive_container.dart';
import 'package:flutter/material.dart';

import '../measure_tool.dart';
import 'normal_child.dart';
import 'pisa.dart';
import 'rvsp.dart';

class CustomComboItemGroup extends FStatelessWidget {
  static List<String> get specialItemTypes =>
      specialItemChildTypes.keys.toList();

  static final Map<String, List<String>> specialItemChildTypes = {
    MeasureTypes.RVSP: ["Rap"],
    MeasureTypes.PISA: ["AlsVel"],
  };

  final FInteractiveContainer businessParent;
  final ItemMeta itemMeta;
  final int activeIndex;
  final ValueChanged<int> onChildClick;

  const CustomComboItemGroup({
    super.key,
    required this.businessParent,
    required this.onChildClick,
    required this.itemMeta,
    required this.activeIndex,
  });

  @override
  FWidget build(BuildContext context) {
    List<FWidget> children = [];
    for (var i = 0; i < itemMeta.childItems.length; i++) {
      final childItem = itemMeta.childItems[i];
      children.add(
        NormalChildButton(
          businessParent: businessParent,
          activeIndex: activeIndex,
          index: i,
          itemMeta: childItem,
          onClick: () {
            onChildClick.call(i);
          },
        ),
      );
    }
    final specialWidgets = _buildSpecialWidgets();
    if (specialWidgets != null && specialWidgets.isNotEmpty) {
      children.addAll(specialWidgets);
    }

    return FContainer(
      decoration: const BoxDecoration(
        color: LeftSiderSelectMeasureState.childContainerBackground,
        borderRadius: BorderRadius.only(
            bottomLeft: Radius.circular(5), bottomRight: Radius.circular(5)),
      ),
      padding: const EdgeInsets.symmetric(horizontal: 6, vertical: 5),
      child: FColumn(
        children: children,
      ),
    );
  }

  List<FWidget>? _buildSpecialWidgets() {
    final type = itemMeta.measureType;
    final childNames = specialItemChildTypes[type];
    if (childNames != null) {
      return childNames
          .map((e) => _SpecialChildItemWidget(typeName: e))
          .toList();
    }
    return null;
  }
}

class _SpecialChildItemWidget extends FStatelessWidget {
  late final Map<String, FWidgetBuilder> _specialWidgetMap = {
    "Rap": buildRap,
    "AlsVel": buildAlsVel,
  };

  final String typeName;

  _SpecialChildItemWidget({required this.typeName});

  @override
  FWidget build(BuildContext context) {
    final builder = _specialWidgetMap[typeName]!;
    final widget = builder(context);
    return widget;
  }

  FWidget buildRap(BuildContext context) {
    return const RapItemButton();
  }

  FWidget buildAlsVel(BuildContext context) {
    return const AlsVelItemButton();
  }
}