moveLinesUp method

bool moveLinesUp()

Moves the selected lines, or the current line, one row upward.

Implementation

bool moveLinesUp() {
  return _runEditFrame(() {
    _beginHistoryAction(_TextAreaHistoryAction.transform, breakChain: true);
    final result = textMoveSelectedLinesDocument(
      document: _document,
      state: _currentLineStateSnapshot(),
      direction: -1,
    );
    if (!result.changed) {
      return false;
    }

    _recordUndoSnapshot();
    _applyOffsetCommandResult(result);
    return true;
  });
}