protected virtual void NotifyBatch()
{
var changes = this.batch;
this.batch = null;
if (changes == null)
{
return;
}
var args = GetCollectionChangedEventArgs(changes);
if (args != null)
{
switch (args.Action)
{
case NotifyCollectionChangedAction.Add:
case NotifyCollectionChangedAction.Remove:
case NotifyCollectionChangedAction.Reset:
this.OnPropertyChanged(CountPropertyChangedEventArgs);
this.OnPropertyChanged(IndexerPropertyChangedEventArgs);
break;
case NotifyCollectionChangedAction.Replace:
case NotifyCollectionChangedAction.Move:
this.OnPropertyChanged(IndexerPropertyChangedEventArgs);
break;
default:
throw new ArgumentOutOfRangeException();
}
this.OnCollectionChanged(args);
}
}
public void EndBatch()
{
var tempBatch = batch;
batch = null;
if (tempBatch.Changes.Count > 0) //if batch is empty, ignore it
{
RecordChange(tempBatch);
}
}
private static string GetBatchDescription(SILayout layout, BatchChange batchChange)
{
switch (batchChange.Name)
{
case "NumberOfFrets":
{
var propChange = batchChange.ChangedProperties
.FirstOrDefault(x => x.Property == nameof(SIString.NumberOfFrets));
if (propChange != null && propChange.NewValue is int fretCount)
{
return($"{Localizations.LayoutProperty_NumberOfFrets}: {fretCount}");
}
return(Localizations.LayoutProperty_NumberOfFrets);
}
case "AddStrings":
case "RemoveStrings":
{
var lastChange = batchChange.LayoutChanges
.OfType <CollectionChange>()
.Where(x => x.ElementType == typeof(SIString))
.LastOrDefault();
if (lastChange != null)
{
return($"{Localizations.LayoutProperty_NumberOfStrings}: {lastChange.CollectionCount}");
}
break;
}
}
if (batchChange.Component != null)
{
var marginChange = batchChange.ChangedProperties.FirstOrDefault(x => x.Component is FingerboardMargin);
if (marginChange != null)
{
return(GetFingerboardMarginDescription(layout, batchChange.Name, marginChange));
}
}
return(null);
}
public IDisposable StartBatch(string changeDescription)
{
batch = new BatchChange(changeDescription, this);
return batch;
}
