fromDynamic static method

JsonElevatedButtonBuilder? 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:

{
  "autofocus": "<bool>",
  "clipBehavior": "<Clip>",
  "focusNode": "<FocusNode>",
  "onFocusChange": "<ValueChanged<bool>",
  "onHover": "<ValueChanged<bool>>",
  "onLongPress": "<VoidCallback>",
  "onPressed": "<VoidCallback>",
  "statesController": "<MaterialStatesController>",
  "style": "<ButtonStyle>"
}

As a note, the FocusNode, ValueChanged, and VoidCallback cannot be decoded via JSON.

Instead, the only way to bind those values to the builder is to use a function or a variable reference via the JsonWidgetRegistry.

See also:

• ThemeDecoder.decodeButtonStyle
• ThemeDecoder.decodeClip

Implementation

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

  if (map != null) {
    result = JsonElevatedButtonBuilder(
      autofocus: map['autofocus'] == null
          ? false
          : JsonClass.parseBool(
              map['autofocus'],
            ),
      clipBehavior: ThemeDecoder.decodeClip(
            map['clipBehavior'],
            validate: false,
          ) ??
          Clip.none,
      focusNode: map['focusNode'],
      onFocusChange: map['onFocusChange'],
      onHover: map['onHover'],
      onLongPress: map['onLongPress'],
      onPressed: map['onPressed'],
      statesController: map['statesController'],
      style: ThemeDecoder.decodeButtonStyle(
        map['style'],
        validate: false,
      ),
    );
  }

  return result;
}