private Task UpdateSequenceAsync(ActionChangeList change, CancellationToken cancellationToken = default(CancellationToken))
{
if (change == null)
{
throw new ArgumentNullException(nameof(change));
}
// Initialize sequence if needed
var newSequence = !this.Actions.Any();
// Update sequence
switch (change.ChangeType)
{
case ActionChangeType.InsertActions:
// Insert at the beginning, being careful to not change the reference to this.Actions instance,
// since it is tied to the state.
var newActions = new List <ActionState>(change.Actions);
newActions.AddRange(this.Actions);
this.Actions.Clear();
this.Actions.AddRange(newActions);
break;
case ActionChangeType.AppendActions:
case ActionChangeType.ReplaceSequence:
this.Actions.AddRange(change.Actions);
break;
}
return(Task.CompletedTask);
}
/// <summary>
/// Queues up a set of changes that will be applied when ApplyChanges is called.
/// </summary>
/// <param name="changes">Plan changes to queue up.</param>
public void QueueChanges(ActionChangeList changes)
{
// Pull change lists from turn context
var queue = this.Changes ?? new List <ActionChangeList>();
queue.Add(changes);
// Save back changes to turn context
Changes = queue;
}
