deleteBackward method

bool deleteBackward({
  1. bool word = false,
  2. bool coalesce = false,
})

Deletes backward from the cursor or removes the current selection.

Implementation

bool deleteBackward({bool word = false, bool coalesce = false}) {
  return _runEditFrame(() {
    final hasSelection =
        selectionStart != null &&
        selectionEnd != null &&
        selectionStart != selectionEnd;
    final action = hasSelection
        ? _TextInputHistoryAction.replace
        : _TextInputHistoryAction.deleteBackward;
    _beginHistoryAction(
      action,
      breakChain: !coalesce || action == _TextInputHistoryAction.replace,
    );
    _resetDesiredCol();
    if (_deleteSelection()) {
      _updateSuggestions();
      _handleOverflow();
      return true;
    }
    final before = _captureEditState();
    if (word) {
      _deleteWordBackward();
    } else {
      final result = textDeletePrevious(
        document: _document,
        state: _currentOffsetStateSnapshot(),
      );
      if (result.changed) {
        _recordUndoSnapshot();
        _applyEditCommandResult(result);
      }
    }
    _updateSuggestions();
    _handleOverflow();
    return !before.sameAs(_captureEditState());
  });
}