execute method

@override void execute(List<EditRequest> requests)

Executes the given requests.

Any changes that result from the given requests are reported to listeners as a series of EditEvents.

Implementation

@override
void execute(List<EditRequest> requests) {
  if (requests.isEmpty) {
    // No changes were requested. Don't waste time starting and ending transactions, etc.
    editorEditsLog.warning("Tried to execute requests without providing any requests");
    return;
  }

  editorEditsLog.finer("Executing requests:");
  for (final request in requests) {
    editorEditsLog.finer(" - ${request.runtimeType}");
  }

  if (_activeCommandCount == 0 && !_isInTransaction) {
    // No transaction was explicitly requested, but all changes exist in a transaction.
    // Automatically start one, and then end the transaction after the current changes.
    _isImplicitTransaction = true;
    startTransaction();
  }

  _activeCommandCount += 1;

  final undoableCommands = <EditCommand>[];
  for (final request in requests) {
    // Execute the given request.
    final command = _findCommandForRequest(request);
    final commandChanges = _executeCommand(command);
    _activeChangeList!.addAll(commandChanges);

    if (command.historyBehavior == HistoryBehavior.undoable) {
      undoableCommands.add(command);
      _transaction!.changes.addAll(List.from(commandChanges));
    }
  }

  // Log the time at the end of the actions in this transaction.
  _transaction!.lastChangeTime = clock.now();

  if (undoableCommands.isNotEmpty) {
    _transaction!.commands.addAll(undoableCommands);
  }

  if (_activeCommandCount == 1 && _isImplicitTransaction && !_isReacting) {
    endTransaction();
  } else {
    _activeCommandCount -= 1;
  }
}