_handle = (ResizeHandle) context.draggable;
// add GlassPanel to prevent iframes capturing mouseover events
// see http://code.google.com/p/gwt-dnd/issues/detail?id=29
if (_glassPanel == null) {
_glassPanel = new GlassPanel(false);
_glassPanel.setStyleName(_handle.getResources().style()
.glassPanel());
}
getBoundaryPanel().add(_glassPanel, 0, 0);