selectWordOrRow method

void selectWordOrRow(Position position)

Implementation

void selectWordOrRow(Position position) {
  if (position.y > buffer.lines.length) {
    return;
  }

  final row = position.y;

  final line = buffer.lines[row];

  final positionIsInSelection = _selection.contains(position);
  final completeLineIsSelected =
      _selection.start?.x == 0 && _selection.end?.x == terminalWidth;

  if (positionIsInSelection && !completeLineIsSelected) {
    // select area on an already existing selection extends it to the full line
    _selection.clear();
    _selection.init(Position(0, row));
    _selection.update(Position(terminalWidth, row));
  } else {
    // select the word that is under position

    var start = position.x;
    var end = position.x;

    do {
      if (start == 0) {
        break;
      }
      final content = line.cellGetContent(start - 1);
      if (kWordSeparators.contains(String.fromCharCode(content))) {
        break;
      }
      start--;
    } while (true);
    do {
      if (end >= terminalWidth - 1) {
        break;
      }
      final content = line.cellGetContent(end + 1);
      if (kWordSeparators.contains(String.fromCharCode(content))) {
        break;
      }
      end++;
    } while (true);

    _selection.clear();
    _selection.init(Position(start, row));
    _selection.update(Position(end, row));
    refresh();
  }
}