public override int TestMultiple(IEnumerable <Uri> uris)
{
return(uris.All(u => ImagesMedia.IsValidImageUri(u)) ? 100 : -1);
}
private void slideListView_DragEnterOrOver(object sender, System.Windows.DragEventArgs e)
{
int i = GetIndexAtPosition(e.GetPosition(slideListView));
this.RemoveInsertionAdorner();
if (i >= 0)
{
if (slideListView.HasItems)
{
var container = slideListView.ItemContainerGenerator.ContainerFromIndex(i) as FrameworkElement;
this.CreateInsertionAdorner(container, e.GetPosition(container).IsInFirstHalf(container, false));
}
if (e.Data.GetData(typeof(ImageInfo)) != null)
{
e.Effects = DragDropEffects.Move;
}
else if (e.Data.GetData(DataFormats.FileDrop) != null &&
((string[])e.Data.GetData(DataFormats.FileDrop)).Where((f) => ImagesMedia.IsValidImageUri(new Uri(f))).Any())
{
e.Effects = DragDropEffects.Copy;
}
else
{
e.Effects = DragDropEffects.None;
}
}
else
{
e.Effects = DragDropEffects.None;
}
e.Handled = true;
}
