private void removeAdorner()
{
if (adorner != null)
{
AdornerLayer.GetAdornerLayer(adorner).Remove(adorner);
adorner = null;
}
}
private void ShowAdorner(UIElement element, bool fullBorder = false)
{
AdornerLayer aLayer = AdornerLayer.GetAdornerLayer(element);
removeAdorner();
adorner = new DropAdorner(element, fullBorder);
adorner.IsHitTestVisible = false;
aLayer.Add(adorner);
}
private void DeckDragEnter(object sender, DragEventArgs e)
{
if (!e.Data.GetDataPresent("Card"))
{
e.Effects = DragDropEffects.None;
}
else
{
if (e.Effects == DragDropEffects.Copy)
{
Expander exp = FindAncestor <Expander>(sender as FrameworkElement);
ObservableSection dropSection = (ObservableSection)((FrameworkElement)exp).DataContext;
var dragCard = e.Data.GetData("Card") as IMultiCard;
var element = dropSection.Cards.FirstOrDefault(c => c.Id == dragCard.Id);
if (element == null) //i.e. card is not found
{
e.Effects = DragDropEffects.All;
}
}
if (e.Effects == DragDropEffects.All)
{
DataGridRow row = FindAncestor <DataGridRow>(e.OriginalSource as FrameworkElement);
DataGrid grid = (DataGrid)FindAncestor <Expander>(e.OriginalSource as FrameworkElement).Content;
if (row != null)
{
AdornerLayer aLayer = AdornerLayer.GetAdornerLayer(row);
removeAdorner();
adorner = new DropAdorner(row);
adorner.IsHitTestVisible = false;
aLayer.Add(adorner);
}
else
{
removeAdorner();
if (grid != null)
{
AdornerLayer aLayer = AdornerLayer.GetAdornerLayer(grid);
adorner = new DropAdorner(grid, true);
adorner.IsHitTestVisible = false;
aLayer.Add(adorner);
}
}
}
}
}