decodeWidgetStatePropertyDouble static method

WidgetStateProperty<double?>? decodeWidgetStatePropertyDouble(dynamic value, { bool validate = true, })

Decodes a value into a double based WidgetStateProperty. This accepts a double or a String which will be resolved for all states.

Alternatively, if the value is a Map then this expects the following format:

{
  "disabled": "<double>",
  "dragged": "<double>",
  "empty": "<double>",
  "error": "<double>",
  "focused": "<double>",
  "hovered": "<double>",
  "pressed": "<double>",
  "scrolledUnder": "<double>",
  "selected": "<double>"
}

Implementation

static WidgetStateProperty<double?>? decodeWidgetStatePropertyDouble(
  dynamic value, {
  bool validate = true,
}) {
  WidgetStateProperty<double?>? result;

  if (value is WidgetStateProperty<double?>) {
    result = value;
  } else if (value != null) {
    if (value is int) {
      result = WidgetStateProperty.all<double?>(value.toDouble());
    } else if (value is double) {
      result = WidgetStateProperty.all<double?>(value);
    } else if (value is String) {
      result = WidgetStateProperty.all<double?>(
        JsonClass.maybeParseDouble(value),
      );
    } else if (value is Map) {
      assert(SchemaValidator.validate(
        schemaId: '$_baseSchemaUrl/widget_state_property_double',
        value: value,
        validate: validate,
      ));

      result = MapWidgetStateProperty.resolveWith((states) {
        double? result;
        if (states.contains(WidgetState.disabled)) {
          result = JsonClass.maybeParseDouble(value['disabled']);
        } else if (states.contains(WidgetState.dragged)) {
          result = JsonClass.maybeParseDouble(value['dragged']);
        } else if (states.contains(WidgetState.error)) {
          result = JsonClass.maybeParseDouble(value['error']);
        } else if (states.contains(WidgetState.focused)) {
          result = JsonClass.maybeParseDouble(value['focused']);
        } else if (states.contains(WidgetState.hovered)) {
          result = JsonClass.maybeParseDouble(value['hovered']);
        } else if (states.contains(WidgetState.pressed)) {
          result = JsonClass.maybeParseDouble(value['pressed']);
        } else if (states.contains(WidgetState.scrolledUnder)) {
          result = JsonClass.maybeParseDouble(value['scrolledUnder']);
        } else if (states.contains(WidgetState.selected)) {
          result = JsonClass.maybeParseDouble(value['selected']);
        } else {
          result = JsonClass.maybeParseDouble(value['empty']);
        }

        return result;
      });
    } else {
      result = WidgetStateProperty.all<double?>(value);
    }
  }
  return result;
}