async void IDropTarget.Drop(IDropInfo dropInfo)
{
var source = (Component.TrackButton)VisualTreeHelper.GetChild(dropInfo.DragInfo.VisualSourceItem, 0);
int sourceIdx = ItemsControlHelper.FindIndexByItemChild(panelTracks, source);
int targetIdx = dropInfo.InsertIndex - 1;
// nothing need to work
if (sourceIdx == targetIdx)
{
return;
}
if (sourceIdx > targetIdx)
{
targetIdx--;
}
var sourceItem = dropInfo.Data as PlexTrack;
var targetItem = targetIdx == -1 ? null : ((Component.TrackButton)ItemsControlHelper.GetItemChildByIndex(panelTracks, targetIdx)).Track;
// move it
panelTracks.IsEnabled = false;
var app = (App)Application.Current;
try
{
await app.plexClient.MoveTrackInPlaylist(Playlist, sourceItem, targetItem);
// update UI
Tracks.Remove(sourceItem);
Tracks.Insert(targetIdx == -1 ? 0 : targetIdx, sourceItem);
}
catch
{
MessageBox.Show("Failed to update data in the remote server.", "PlexFlux", MessageBoxButton.OK, MessageBoxImage.Exclamation);
}
finally
{
panelTracks.IsEnabled = true;
}
}
