fromDynamic static method

JsonIconButtonBuilder? 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:

{
  "alignment": <Alignment>,
  "autofocus": <bool>,
  "color": <Color>,
  "constraints": <BoxConstraints>,
  "disabledColor": <Color>,
  "enableFeedback": <bool>,
  "focusColor": <Color>,
  "focusNode": <FocusNode>,
  "highlightColor": <Color>,
  "hoverColor": <Color>,
  "icon": <JsonWidgetData>,
  "iconSize": <double>,
  "mouseCursor": <MouseCursor>,
  "onPressed": <VoidCallback>,
  "padding": <EdgeInsetsGeometry>,
  "splashColor": <Color>,
  "splashRadius": <double>,
  "tooltip": <String>,
  "visualDensity": <VisualDensity>,
}

This can accept a "child" in place of the "icon". This considers both of those as synonyms and if both are set, the "icon" will take preference.

As a note, the FocusNode, 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.decodeAlignment
• ThemeDecoder.decodeBoxConstraints
• ThemeDecoder.decodeColor
• ThemeDecoder.decodeEdgeInsetsGeometry
• ThemeDecoder.decodeMouseCursor
• ThemeDecoder.decodeVisualDensity

Implementation

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

  if (map != null) {
    result = JsonIconButtonBuilder(
      alignment:
          ThemeDecoder.decodeAlignment(map['alignment']) ?? Alignment.center,
      autofocus: JsonClass.parseBool(map['autofocus']),
      color: ThemeDecoder.decodeColor(map['color']),
      constraints: ThemeDecoder.decodeBoxConstraints(map['constraints']),
      disabledColor: ThemeDecoder.decodeColor(map['disabledColor']),
      enableFeedback: map['enableFeedback'] == null
          ? true
          : JsonClass.parseBool(map['enableFeedback']),
      focusColor: ThemeDecoder.decodeColor(map['focusColor']),
      focusNode: map['focusColor'],
      highlightColor: ThemeDecoder.decodeColor(map['highlightColor']),
      hoverColor: ThemeDecoder.decodeColor(map['hoverColor']),
      icon: JsonWidgetData.fromDynamic(map['icon']),
      iconSize: JsonClass.parseDouble(map['iconSize'], 24.0)!,
      mouseCursor: ThemeDecoder.decodeMouseCursor(map['mouseCursor']) ??
          SystemMouseCursors.click,
      onPressed: map['onPressed'],
      padding: ThemeDecoder.decodeEdgeInsetsGeometry(map['padding']) ??
          const EdgeInsets.all(8.0),
      splashColor: ThemeDecoder.decodeColor(map['splashColor']),
      splashRadius: JsonClass.parseDouble(map['splashRadius']),
      tooltip: map['tooltip']?.toString(),
      visualDensity: ThemeDecoder.decodeVisualDensity(map['visualDensity']),
    );
  }

  return result;
}