mark method

String mark(String id, String content)

Wraps content with zone markers.

The markers are zero-width ANSI sequences that don't affect layout calculations when using proper width functions.

When the manager is disabled, returns content unchanged.

Example

final button = zone.mark('submit', style.render('Submit'));
final cancel = zone.mark('cancel', style.render('Cancel'));
return '$button  $cancel';

Implementation

String mark(String id, String content) {
  if (!_enabled || id.isEmpty || content.isEmpty) {
    return content;
  }

  // Check if we already have a generated ID for this user ID
  var gid = _ids[id];
  if (gid != null) {
    return '$gid$content$gid';
  }

  // Generate a new marker ID
  gid = '\x1B[${++_markerCounter}z';
  _ids[id] = gid;
  _rids[gid] = id;

  return '$gid$content$gid';
}