VitalApp/lib/pages/form/form_info.dart

import 'package:fis_common/event/event_type.dart';

class FormInfo {
  static FormInfo? _reportInfo;

  ///需要提交到Server的表单值
  Map<String, dynamic> _formValue = {};

  FormInfo._internal();

  ///ReportInfo全局单例
  static FormInfo get instance {
    _reportInfo ??= FormInfo._internal();
    return _reportInfo!;
  }

  ///需要联动的值改变事件
  FEventHandler<UpdateFormArgs> onValueChange = FEventHandler<UpdateFormArgs>();

  ///改变目标的值
  FEventHandler<TargetFormArgs> onChangeTargetValue =
      FEventHandler<TargetFormArgs>();

  Map<String, dynamic> get formValue => _formValue;
  set formValue(Map<String, dynamic> newValue) {
    _formValue = newValue;
  }
}

class UpdateFormArgs {
  final String sourceKey;
  final UpdateFormType type;
  final dynamic sourceValue;

  UpdateFormArgs({
    required this.sourceKey,
    required this.sourceValue,
    this.type = UpdateFormType.UpdateValue,
  });
}

class TargetFormArgs {
  final String targetKey;
  final String targetValue;

  ///是否禁用组件
  final bool isDisabledValue;

  ///是否隐藏组件（不显示）
  final bool isHidden;

  TargetFormArgs(
    this.targetKey, {
    this.targetValue = "",
    this.isDisabledValue = false,
    this.isHidden = false,
  });
}

enum UpdateFormType {
  Add,
  UpdateValue,
  Remove,
}