view method

  1. @override
String view()
override

Renders the current model state for display.

This method is called after every update to refresh the screen. It should return either a String or a View object.

Guidelines

  • Keep view functions pure - no side effects
  • View should only depend on model state
  • Use string interpolation or StringBuffer for complex views
  • Consider terminal width/height for responsive layouts

Example

@override
String view() {
  final buffer = StringBuffer();

  // Header
  buffer.writeln('╔════════════════════════════╗');
  buffer.writeln('║      My Application        ║');
  buffer.writeln('╚════════════════════════════╝');
  buffer.writeln();

  // Content
  if (loading) {
    buffer.writeln('Loading...');
  } else {
    for (final item in items) {
      final prefix = item == selectedItem ? '▸ ' : '  ';
      buffer.writeln('$prefix$item');
    }
  }

  buffer.writeln();

  // Footer
  buffer.writeln('↑/↓: Navigate  Enter: Select  q: Quit');

  return buffer.toString();
}

Implementation

@override
String view() {
  final buffer = StringBuffer();

  if (showTitle && title.isNotEmpty) {
    buffer.writeln(styles.title.render(title));
  }

  final inputView = _input.view();
  buffer.writeln(
    inputView is View
        ? inputView.content.trimRight()
        : inputView.toString().trimRight(),
  );

  if (_filteredItems.isEmpty) {
    buffer.writeln(styles.noResults.render('  $noResultsText'));
  } else {
    buffer.writeln(_table.view());
  }

  if (_paginator.totalPages > 1) {
    buffer.writeln(styles.dimmed.render(_paginator.view()));
  }

  if (showHelp) {
    final help = '↑/↓ navigate  ↵ select  esc cancel';
    buffer.writeln(styles.dimmed.render(help));
  }

  return buffer.toString();
}