private void ToApplyList_Drop(object sender, DragEventArgs e)
{
if (_isInside)
{
_isInside = false;
var droppedDataInside = (IdFilter)e.Data.GetData(typeof(IdFilter));
_toApply.Remove(droppedDataInside);
_toApply.Add(droppedDataInside);
return;
}
var droppedData = (VM.Filters)(e.Data.GetData(typeof(VM.Filters)) ?? VM.Filters.Sepia);
_toApply.Add(new IdFilter(droppedData));
ToApplyList.UpdateLayout();
((ListViewItem)ToApplyList.ItemContainerGenerator.ContainerFromIndex(_toApply.Count - 1)).IsSelected = true;
}
private void ToApplyListItem_Drop(object sender, DragEventArgs e)
{
var data = e.Data.GetData(typeof(IdFilter));
var droppedData = data is null ? new IdFilter((VM.Filters)(e.Data.GetData(typeof(VM.Filters)) ?? VM.Filters.Sepia)) : (IdFilter)e.Data.GetData(typeof(IdFilter));
if (droppedData is null)
{
return;
}
var target = (IdFilter)((ListViewItem)sender).DataContext;
e.Handled = true;
if (data is null)
{
_toApply.Add(droppedData);
ToApplyList.UpdateLayout();
return;
}
var removedIdx = ToApplyList.Items.IndexOf(droppedData);
var targetIdx = ToApplyList.Items.IndexOf(target);
if (removedIdx < targetIdx)
{
_toApply.Insert(targetIdx + 1, droppedData);
_toApply.RemoveAt(removedIdx);
}
else
{
var remIdx = removedIdx + 1;
if (_toApply.Count + 1 > remIdx)
{
_toApply.Insert(targetIdx, droppedData);
_toApply.RemoveAt(remIdx);
}
}
ToApplyList.UpdateLayout();
}
