PerformableActionsContext.fromActions constructor

Implementation

factory PerformableActionsContext.fromActions(
  final List<PerformableAction> actions,
) {
  final customSemanticActions = <CustomSemanticsAction, VoidCallback>{};
  final menuChildren = <Widget>[];
  final bindings = <ShortcutActivator, VoidCallback>{};
  var autofocused = false;
  for (final action in actions) {
    final invoke = action.invoke;
    final activator = action.activator;
    if (invoke != null) {
      customSemanticActions[CustomSemanticsAction(label: action.name)] =
          invoke;
      if (activator != null) {
        bindings[activator] = invoke;
      }
    } else {
      assert(
        action.activator == null,
        // ignore: lines_longer_than_80_chars
        'The action "${action.name}" is acting as a label (`activate == null`). As such, it cannot have a shortcut: ${action.activator}.',
      );
    }
    final autofocus = invoke != null && !autofocused;
    menuChildren.add(
      PerformableActionMenuItem(action: action, autofocus: autofocus),
    );
    if (autofocus) {
      autofocused = true;
    }
  }
  return PerformableActionsContext(
    actions: actions,
    customSemanticActions: customSemanticActions,
    menuChildren: menuChildren,
    bindings: bindings,
  );
}