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>",
  "isSelected": "<bool>",
  "mouseCursor": "<MouseCursor>",
  "onPressed": "<VoidCallback>",
  "padding": "<EdgeInsetsGeometry>",
  "selectedIcon": "<JsonWidgetData>",
  "splashColor": "<Color>",
  "splashRadius": "<double>",
  "style": "<ButtonStyle>",
  "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.decodeButtonStyle
• 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'],
            validate: false,
          ) ??
          Alignment.center,
      autofocus: JsonClass.parseBool(map['autofocus']),
      color: ThemeDecoder.decodeColor(
        map['color'],
        validate: false,
      ),
      constraints: ThemeDecoder.decodeBoxConstraints(
        map['constraints'],
        validate: false,
      ),
      disabledColor: ThemeDecoder.decodeColor(
        map['disabledColor'],
        validate: false,
      ),
      enableFeedback: map['enableFeedback'] == null
          ? true
          : JsonClass.parseBool(map['enableFeedback']),
      focusColor: ThemeDecoder.decodeColor(
        map['focusColor'],
        validate: false,
      ),
      focusNode: map['focusColor'],
      highlightColor: ThemeDecoder.decodeColor(
        map['highlightColor'],
        validate: false,
      ),
      hoverColor: ThemeDecoder.decodeColor(
        map['hoverColor'],
        validate: false,
      ),
      icon: JsonWidgetData.fromDynamic(map['icon'], registry: registry),
      iconSize: JsonClass.maybeParseDouble(map['iconSize'], 24.0)!,
      isSelected: map['isSelected'] == null
          ? null
          : JsonClass.parseBool(map['isSelected']),
      mouseCursor: ThemeDecoder.decodeMouseCursor(
            map['mouseCursor'],
            validate: false,
          ) ??
          SystemMouseCursors.click,
      onPressed: map['onPressed'],
      padding: ThemeDecoder.decodeEdgeInsetsGeometry(
            map['padding'],
            validate: false,
          ) ??
          const EdgeInsets.all(8.0),
      selectedIcon:
          JsonWidgetData.fromDynamic(map['selectedIcon'], registry: registry),
      splashColor: ThemeDecoder.decodeColor(
        map['splashColor'],
        validate: false,
      ),
      splashRadius: JsonClass.maybeParseDouble(map['splashRadius']),
      style: ThemeDecoder.decodeButtonStyle(
        map['style'],
        validate: false,
      ),
      tooltip: map['tooltip']?.toString(),
      visualDensity: ThemeDecoder.decodeVisualDensity(
        map['visualDensity'],
        validate: false,
      ),
    );
  }

  return result;
}