fromJson method

@override MaterialStateProperty<TextStyle?>? fromJson(Map<String, dynamic>? json)

Implementation

@override
MaterialStateProperty<TextStyle?>? fromJson(Map<String, dynamic>? json) {
  if (json == null) return null;

  var testValues = [
    'disabled',
    'dragged',
    'empty',
    'error',
    'focused',
    'hovered',
    'pressed',
    'selected',
  ];

  var isMsp = false;
  for (var key in json.keys) {
    if (testValues.contains(key)) {
      isMsp = true;
    }
  }

  if (isMsp != true) {
    return MaterialStateProperty.all(
        const NullableTextStyleConverter().fromJson(json));
  } else {
    return MaterialStateProperty.resolveWith((states) {
      if (states.contains(MaterialState.disabled)) {
        return const NullableTextStyleConverter().fromJson(json['disabled']);
      } else if (states.contains(MaterialState.dragged)) {
        return const NullableTextStyleConverter().fromJson(json['dragged']);
      } else if (states.contains(MaterialState.error)) {
        return const NullableTextStyleConverter().fromJson(json['error']);
      } else if (states.contains(MaterialState.focused)) {
        return const NullableTextStyleConverter().fromJson(json['focused']);
      } else if (states.contains(MaterialState.hovered)) {
        return const NullableTextStyleConverter().fromJson(json['hovered']);
      } else if (states.contains(MaterialState.pressed)) {
        return const NullableTextStyleConverter().fromJson(json['pressed']);
      } else if (states.contains(MaterialState.selected)) {
        return const NullableTextStyleConverter().fromJson(json['selected']);
      } else {
        return const NullableTextStyleConverter().fromJson(json['empty']);
      }
    });
  }
}