buildPopupMenuButton method

@protected Widget buildPopupMenuButton(BuildParameters params)

Implementation

@protected
Widget buildPopupMenuButton(BuildParameters params) {
  final alias = params.props["alias"] ?? params.id;
  final function = events.getValueFunction<Object?>(params.context,
      params.actions["onSelected"], params.state, params.parentContext);

  final nameKey = params.props["nameKey"] ?? "name";
  final valueKey = params.props["valueKey"] ?? "id";
  final valueList = getMenuValues(params.props["values"], nameKey, valueKey);

  var menuItems = <PopupMenuItem<String>>[];
  for (var map in valueList) {
    menuItems.add(PopupMenuItem<String>(
      value: map[valueKey],
      child: Text(properties.getText(map[nameKey], "menu")),
    ));
  }

  return PopupMenuButton<String>(
    itemBuilder: (a) => menuItems,
    key: properties.getKey(params.id),
    initialValue: params.props["value"]?.toString(),
    color: tryParseColor(params.props["color"]),
    tooltip: params.props["tooltip"] != null
        ? properties.getText(params.props["tooltip"], "label")
        : null,
    shape: params.buildProp("shape"),
    padding: params.buildProp("padding") ?? const EdgeInsets.all(8.0),
    enabled: parseBool(params.props["enabled"], defaultValue: true),
    offset: params.buildProp("offset") ?? Offset.zero,
    elevation: tryParseDouble(params.props["elevation"]),
    icon: builder.tryBuildWidget(params.context, params.widgets["icon"],
        params.state, params.parentContext),
    iconSize: tryParseDouble(params.props["iconSize"]),
    child: builder.tryBuildWidget(params.context, params.widgets["child"],
        params.state, params.parentContext),
    onSelected: (v) {
      if (alias != null) {
        params.state[alias] = v;
      }
      if (function != null) {
        function.call(v);
      }
    },
  );
}