private async void dragMgr_ProcessDrop(object sender, ProcessDropEventArgs <AnimationRigidBody> e)
{
// This shows how to customize the behavior of a drop.
// Here we perform a swap, instead of just moving the dropped item.
int higherIdx = Math.Max(e.OldIndex, e.NewIndex);
int lowerIdx = Math.Min(e.OldIndex, e.NewIndex);
if ((lowerIdx < 0) && (e.DataItem.Name == null))
{
var name = await this.ShowInputAsync("Name", "Please specify unique animator name or hit cancel!");
//await this.ShowMessageAsync("Hello", "Hello " + result + "!");
//var sobj= new SpriteObject(txtSpriteName.Text);
Debug.WriteLine("=> item = {0} {1}", e.DataItem.GetType().Name, e.DataItem.Name);
AnimationRigidBody ani = Activator.CreateInstance(e.DataItem.GetType()) as AnimationRigidBody;
ani.Name = name;
(GObj as SpriteObject).AddAnimation(ani); // generates unique name if name==null
AList.Add(ani);
//lstAnimations.Items.Refresh();
// Resize Columns
var gridView = lstAnimations.View as GridView;
foreach (var column in gridView.Columns.Where(column => Double.IsNaN(column.Width)))
{
Contract.Assume(column != null);
column.Width = column.ActualWidth;
column.Width = Double.NaN;
}
// so just insert it.
//e.ItemsSource.Insert(higherIdx, e.DataItem);
}
else
{
// null values will cause an error when calling Move.
// It looks like a bug in ObservableCollection to me.
if (e.ItemsSource[lowerIdx] == null ||
e.ItemsSource[higherIdx] == null)
{
return;
}
// The item came from the ListView into which
// it was dropped, so swap it with the item
// at the target index.
e.ItemsSource.Move(lowerIdx, higherIdx);
e.ItemsSource.Move(higherIdx - 1, lowerIdx);
// update Sprite animation list
(GObj as SpriteObject).SerializableAnimations = AList;
}
// Set this to 'Move' so that the OnListViewDrop knows to
// remove the item from the other ListView.
e.Effects = System.Windows.DragDropEffects.Move;
}
private void lstAnimations_KeyDown(object sender, KeyEventArgs e)
{
AnimationRigidBody obj = (lstAnimations.SelectedItem as AnimationRigidBody);
if (obj != null)
{
if (e.Key == Key.Delete)
{
AList.Remove(obj);
(GObj as SpriteObject).RemoveAnimation(obj);
}
}
}
