fromDynamic static method

JsonPopupMenuButtonBuilder? fromDynamic(
  1. dynamic map, {
  2. JsonWidgetRegistry? registry,
})

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

{
  "color": <Color>,
  "constraints": <BoxConstraints>,
  "elevation": <double>,
  "enableFeedback": <bool>,
  "enabled": <bool>,
  "icon": <JsonWidgetData>,
  "iconSize": <double>
  "initialValue": <T>,
  "itemBuilder": <PopupMenuItemBuilder<T>>,
  "offset": <Offset>,
  "onCanceled": <PopupMenuCanceled>,
  "onSelected": <PopupMenuItemSelected<T>>,
  "padding": <EdgeInsetsGeometry>,
  "shape": <ShapeBorder>,
  "splashRadius": <SplashRadius>,
  "tooltip": <String>
}

As a note, the PopupMenuItemBuilder<T>, PopupMenuCanceled and PopupMenuItemSelected<T> cannot b eecoded 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:

  • JsonWidgetData.fromDynamic
  • ThemeDecoder.decodeBoxConstraints
  • ThemeDecoder.decodeColor
  • ThemeDecoder.decodeEdgeInsetsGeometry
  • ThemeDecoder.decodeOffset
  • ThemeDecoder.decodePopupMenuPosition
  • ThemeDecoder.decodeShapeBorder

Implementation

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

  if (map != null) {
    result = JsonPopupMenuButtonBuilder(
      color: ThemeDecoder.decodeColor(
        map['color'],
        validate: false,
      ),
      constraints: ThemeDecoder.decodeBoxConstraints(
        map['constraints'],
        validate: false,
      ),
      elevation: JsonClass.parseDouble(
        map['elevation'],
      ),
      enableFeedback: map['enableFeedback'] == null
          ? true
          : JsonClass.parseBool(
              map['enableFeedback'],
            ),
      enabled: map['enabled'] == null
          ? true
          : JsonClass.parseBool(
              map['enabled'],
            ),
      icon: JsonWidgetData.fromDynamic(
        map['icon'],
        registry: registry,
      ),
      iconSize: JsonClass.parseDouble(map['iconSize']),
      initialValue: map['initialValue'],
      itemBuilder: map['itemBuilder'],
      offset: ThemeDecoder.decodeOffset(
            map['offset'],
            validate: false,
          ) ??
          Offset.zero,
      onCanceled: map['onCanceled'],
      onSelected: map['onSelected'],
      padding: ThemeDecoder.decodeEdgeInsetsGeometry(
            map['padding'],
            validate: false,
          ) ??
          EdgeInsets.all(8.0),
      position: ThemeDecoder.decodePopupMenuPosition(
        map['position'],
        validate: false,
      ),
      shape: ThemeDecoder.decodeShapeBorder(
        map['shape'],
        validate: false,
      ),
      splashRadius: JsonClass.parseDouble(map['splashRadius']),
      tooltip: map['tooltip'],
    );
  }

  return result;
}