protected override bool OnDragMotion(Gdk.DragContext context, int x, int y, uint time)
{
TreePath path;
TreeViewDropPosition pos;
Source active_source = ServiceManager.SourceManager.ActiveSource;
if (active_source.SupportedMergeTypes == SourceMergeType.None)
{
Gdk.Drag.Status(context, 0, time);
return(false);
}
else if (!GetDestRowAtPos(x, y, out path, out pos))
{
Gdk.Drag.Status(context, 0, time);
return(false);
}
Source drop_source = store.GetSource(path);
Source parent_source = (drop_source as LibrarySource) ?? (drop_source.Parent as LibrarySource);
// Scroll if within 20 pixels of the top or bottom
if (y < 20)
{
Vadjustment.Value -= 30;
}
else if ((Allocation.Height - y) < 20)
{
Vadjustment.Value += 30;
}
ShowNewPlaylistUnder(parent_source, active_source);
if (!drop_source.AcceptsUserInputFromSource(active_source))
{
Gdk.Drag.Status(context, 0, time);
return(true);
}
SetDragDestRow(path, TreeViewDropPosition.IntoOrAfter);
bool move = (active_source is LibrarySource) && (drop_source is LibrarySource);
Gdk.Drag.Status(context, move ? Gdk.DragAction.Move : Gdk.DragAction.Copy, time);
return(true);
}
