fis_lib_measure/lib/process/layout/view_port.dart

import 'package:fis_measure/interfaces/enums/display_mode.dart';

class LayoutViewPort {
  double left = 0;
  double right = 0;
  double top = 0;
  double bottom = 0;
  DisplayModeEnum displayFormat = DisplayModeEnum.Normal;

  LayoutViewPort();

  factory LayoutViewPort.fromJson(Map<String, dynamic> map) {
    final instance = LayoutViewPort();
    instance.bottom = _convertItemValue(map['Bottom']);
    instance.top = _convertItemValue(map['Top']);
    instance.left = _convertItemValue(map['Left']);
    instance.right = _convertItemValue(map['Right']);
    instance.displayFormat = _convertFormat(map['Format']);

    return instance;
  }

  static double _convertItemValue(dynamic val) {
    if (val == null) return 0.0;
    if (val is String) {
      return double.tryParse(val) ?? 0.0;
    } else if (val is num) {
      return val.toDouble();
    }
    return 0.0;
  }

  static DisplayModeEnum _convertFormat(dynamic val) {
    if (val == null || val is! String) return DisplayModeEnum.Normal;

    for (var item in DisplayModeEnum.values) {
      if (val == item.name) {
        return item;
      }
    }
    return DisplayModeEnum.Normal;
  }
}