fromDynamic static method

JsonConditionalBuilder? fromDynamic(dynamic map, { JsonWidgetRegistry? registry, })

Builds the builder from a Map-like dynamic structure. This expects the JSON format to be of the following structure:

{
  "conditional": {
    "conditions": "<List<Conditional>>",
    "mode": "<EvaluationMode>",
    "values": "<Map<String, dynamic>>"
  },
  "onFalse": "<JsonWidgetData>"
}

The conditional value is required but the onFalse is not. If the onFalse is null then the build will return an empty SizedBox when the conditional evaluates to false.

See also:

• Conditional.fromDynamic
• EvaluationMode.fromCode
• JsonWidgetData.fromDynamic

Implementation

static JsonConditionalBuilder? fromDynamic(
  dynamic map, {
  JsonWidgetRegistry? registry,
}) {
  JsonConditionalBuilder? result;

  if (map != null) {
    final conditional = Conditional.fromDynamic(map['conditional']);
    final keys = <String>{};
    _appendKeys(conditional, keys);

    result = JsonConditionalBuilder(
      conditional: conditional,
      keys: keys,
      onFalse: JsonWidgetData.fromDynamic(
        map['onFalse'],
        registry: registry,
      ),
    );
  }

  return result;
}