Synnefo » Pithos

	    SafeHtml outerHelper(String cssClassName);

	  }

	    // set a custom element as drag helper. The content of the helper will be

	    // set when the drag will start

	    options.setCursorAt(new CursorAt(10, 10, null, null));

	    // append the helper to the body element

	    options.setAppendTo("body");

	    // set the revert option

	    options.setRevert(RevertOption.ON_INVALID_DROP);

	    options.setOnBeforeDragStart(new DragFunction() {

			@Override

			public void f(DragContext context) {

				 RestResource value = context.getDraggableData();

			     if(value instanceof TrashResource || value instanceof SharedResource || value instanceof OthersResource || value instanceof OtherUserResource){

			       	throw new StopDragException();

			      }

		public void onBrowserEvent(Cell.Context context, com.google.gwt.dom.client.Element parent, RestResource value, com.google.gwt.dom.client.NativeEvent event, com.google.gwt.cell.client.ValueUpdater<RestResource> valueUpdater) {

			if(event.getType().equals("contextmenu")){

				selectionModel.setSelected(value, true);

				GSS.get().getTreeView().showPopup(event.getClientX(), event.getClientY());

			}

		};