build method

@override Widget build(BuildContext context)

Describes the part of the user interface represented by this widget.

Implementation

@override
Widget build(BuildContext context) {
  _updateListener();
  final optionWidgets = <Widget>[];
  final controller = widget.controller;
  for (var i = 0; i < controller.options.length; i++) {
    if (i > 0) {
      optionWidgets.add(const SizedBox(width: 4));
    }
    final option = controller.options[i];
    final isSelected = (controller.selectedIndex == i);
    final isFocused =
        (_focusNode.hasFocus || widget.focused) &&
        (controller.focusedIndex == i);

    final box = isSelected ? '[X]' : '[ ]';
    final text = '$box $option';

    final style = isFocused
        ? const Style(modifiers: Modifier.reverse, foreground: Colors.yellow)
        : (isSelected
              ? const Style(
                  foreground: Colors.yellow,
                  modifiers: Modifier.bold,
                )
              : const Style(foreground: Colors.white));

    optionWidgets.add(
      SizedBox(
        width: text.characters.length,
        child: Text(text, style: style),
      ),
    );
  }

  return Focus(
    focusNode: _focusNode,
    onFocusChange: (hasFocus) {
      if (mounted) setState(() {});
    },
    onKeyEvent: (event) {
      return handleKeyEvent(event);
    },
    child: Row(optionWidgets),
  );
}