private void DropLayoutItems(object parameters)
{
DragDropHelper.DragDropData data = (DragDropHelper.DragDropData)parameters;
IEnumerable <ContentItemBaseViewModel> items = (data.Data as IList).Cast <ContentItemBaseViewModel>().ToList();
using (new UndoManager.EventGroupScope())
{
if (data.IsReorder)
{
// Find the destination
bool IsAtEnd = false;
ContentItemBase target = null;
if (data.IndexInserted == _package.LayoutItems.Count)
{
IsAtEnd = true;
}
else
{
while (target == null && data.IndexInserted < _package.LayoutItems.Count)
{
ContentItemBase testTarget = _package.LayoutItems[data.IndexInserted];
if (items.Select(i => i.Item).Contains(testTarget))
{
data.IndexInserted++;
}
else
{
target = testTarget;
}
}
}
// Remove the moved items
items.ForEach(i => _package.LayoutItems.Remove(i.Item));
// Add them to the new location
data.IndexInserted = IsAtEnd ? _package.LayoutItems.Count : 0;
if (target != null)
{
data.IndexInserted = _package.LayoutItems.IndexOf(target);
}
}
_package.LayoutItems.InsertRange(data.IndexInserted, items.Select(i => i.Item).ToList());
}
}
private void InsertContentItems(object parameter)
{
ProjectViewModel project = ProjectViewModel.Current;
DragDropHelper.DragDropData data = (DragDropHelper.DragDropData)parameter;
IEnumerable <ContentItemViewModel> items = (data.Data as IList).Cast <ContentItemViewModel>();
// Check for duplicates
var newItems = from civm in items
where !project.ReferenceManager.HasExplicitReferencesToPackage(civm, this)
select new PackageContentItem(civm.Id, civm.Language, civm.FileName);
using (new UndoManager.EventGroupScope())
{
_package.Items.AddRange(newItems);
}
}
