private static void Drop(object sender, DragAndDropEventArgs <SavedTemplateViewModel> e)
{
if (_getSavedPages().Count > 0 && _getSavedPages().Count >= e.ItemData.GenGroup + 1)
{
var items = _getSavedPages()[e.ItemData.GenGroup];
if (items.Count > 1)
{
if (e.NewIndex == 0)
{
_setHome(e.ItemData);
}
if (e.OldIndex > -1)
{
_getSavedPages()[e.ItemData.GenGroup].Move(e.OldIndex, e.NewIndex);
}
_setHome(items.First());
}
}
}
private void OnDrop(object sender, DragEventArgs e)
{
if (ItemUnderDragCursor != null)
{
ItemUnderDragCursor = null;
}
e.Effects = DragDropEffects.None;
if (e.Data.GetDataPresent(typeof(T)))
{
// Get the data dropped object.
T data = e.Data.GetData(typeof(T)) as T;
if (data != null)
{
var itemsSource = this._listView.ItemsSource as ObservableCollection <T>;
if (itemsSource != null)
{
int oldIndex = itemsSource.IndexOf(data);
int newIndex = GetIndexUnderDragCursor();
if (newIndex < 0)
{
if (itemsSource.Count == 0)
{
newIndex = 0;
}
else if (oldIndex < 0)
{
newIndex = itemsSource.Count;
}
else
{
return;
}
}
if (oldIndex != newIndex)
{
if (ProcessDrop != null)
{
// Let the wizard process the drop.
DragAndDropEventArgs <T> args = new DragAndDropEventArgs <T>(itemsSource, data, oldIndex, newIndex, e.AllowedEffects);
ProcessDrop(this, args);
e.Effects = args.Effects;
}
else
{
if (oldIndex > -1)
{
itemsSource.Move(oldIndex, newIndex);
}
else
{
itemsSource.Insert(newIndex, data);
}
e.Effects = DragDropEffects.Move;
}
}
}
}
}
}
