private void OnRemove(IDataSourceViewModel viewModel)
{
int index = _observable.IndexOf(viewModel);
if (index != -1)
{
_observable.RemoveAt(index);
var merged = viewModel as MergedDataSourceViewModel;
if (merged != null)
{
IEnumerable <IDataSourceViewModel> items = merged.Observable;
foreach (IDataSourceViewModel item in items)
{
_observable.Insert(index++, item);
item.Parent = null;
}
}
}
else if (viewModel.Parent != null)
{
((MergedDataSourceViewModel)viewModel.Parent).RemoveChild(viewModel);
_dataSources.Remove(viewModel.DataSource);
}
_allDataSourceViewModels.Remove(viewModel);
_dataSources.Remove(viewModel.DataSource);
UpdateRemoveCommands();
_settings.SaveAsync();
if (_selectedItem == null || _selectedItem == viewModel)
{
SelectedItem = _observable.FirstOrDefault();
}
}
private void DissolveGroupIfNecessary(MergedDataSourceViewModel group)
{
if (group.ChildCount == 1)
{
int groupIndex = _observable.IndexOf(group);
_observable.RemoveAt(groupIndex);
_dataSources.Remove(group.DataSource);
IDataSourceViewModel child = group.Observable.First();
group.RemoveChild(child);
_observable.Insert(groupIndex, child);
}
}