private void ItemsSourceOnCollectionChanged(object sender, NotifyCollectionChangedEventArgs e)
{
switch (e.Action)
{
case NotifyCollectionChangedAction.Add:
for (var i = 0; i < e.NewItems.Count; ++i)
{
var model = (IDataSourceViewModel)e.NewItems[i];
if (PassesFilter(model))
{
var sourceIndex = e.NewStartingIndex + i;
var filteredIndex = FindFilteredIndex(sourceIndex);
FilteredItemsSource.Insert(filteredIndex, model);
}
}
break;
case NotifyCollectionChangedAction.Remove:
foreach (IDataSourceViewModel model in e.OldItems)
{
FilteredItemsSource.Remove(model);
}
break;
case NotifyCollectionChangedAction.Reset:
FilteredItemsSource.Clear();
break;
default:
throw new NotImplementedException();
}
UpdateNoDataSourcesMessage();
}
private void ItemsSourceOnCollectionChanged(object sender, NotifyCollectionChangedEventArgs e)
{
switch (e.Action)
{
case NotifyCollectionChangedAction.Add:
for (int i = 0; i < e.NewItems.Count; ++i)
{
var model = (IDataSourceViewModel)e.NewItems[i];
if (PassesFilter(model))
{
int sourceIndex = e.NewStartingIndex + i;
int filteredIndex = FindFilteredIndex(sourceIndex);
FilteredItemsSource.Insert(filteredIndex, model);
}
}
break;
case NotifyCollectionChangedAction.Remove:
foreach (IDataSourceViewModel model in e.OldItems)
{
FilteredItemsSource.Remove(model);
}
break;
/*case NotifyCollectionChangedAction.Reset:
* foreach (IDataSourceViewModel model in _dataSourceCopy)
* {
* model.PropertyChanged -= DataSourceOnPropertyChanged;
* }
* _dataSourceCopy.Clear();
* FilteredItemsSource.Clear();
* break;*/
default:
throw new NotImplementedException();
}
}