protected void DragDropEvent(object sender, DragEventArgs e)
{
try {
IDragDropItem targetNode = null;
IDragDropItem node =
DragEventCommon(sender, e, ref targetNode);
if (node != null)
{
Cursor save = Cursor.Current;
Cursor.Current = Cursors.WaitCursor;
node.DoDrop(targetNode);
Cursor.Current = save;
}
else
{
// If we are not handling this, see of there is an
// ancestor control that's interested
IDropTarget con = FindAncestorDropControl(e);
if (con != null)
{
con.DragDropEvent(sender, e);
}
}
} catch (Exception ex) {
TraceUtil.WriteLineWarning(this, "Exception in event handler: " + ex);
}
}
// Here the tree is functioning like a tree node
// for drag/drop. This is used from a DragDropPanel
// where something is dropped on the design surface,
// but this tree is delegated to handling it.
// We give it to the top-level node.
public virtual void DoDrop(IDragDropItem node)
{
if (_isObjectContainer)
{
IDragDropItem targetNode = ObjectBrowser.GetTopLevelObjectNode();
targetNode.DoDrop(node);
}
}
