GWT - Unexpected firing of CellList's SelectionChangeEvent

Question

I have two buttons "Next element" and "Previous element" and some custom widget containing CellList. On button clicks I call to my widget's method which changeselection in CellList by calling it's SelectionModel:

selectionModel.setSelected(value, true);

When I refresh CellList's contents, the buttons work just fine, but when I select element in list by clicking on it, this behavior happens: For example, I have elements {0, 1, 2, 3, 4, ..} on the list. I click on element 1, then press "Next element" button two times. These SelectionChangeEvent occurs:

1. Change selection from 1 -> 2 (on first button press)
2. 2 -> 3 (on second press)
3. 3 -> 1

But after step 2 if I press "Previous" it correctly go back to element 1. So element that I clicked with mouse doesn't let selection go more than 1 step around it.
I have no idea where the third event is coming from. My only guess is that manual selection event continues pending after firing, but I don't know how to check that. Anybody knows the reason of this problem?

upd:
I found confirmation that selection by clicking event continues to hanging there somewhere in the EventBus: when I change search filters I access SelectionModel the same way as on button clicks and set selection to first element. But if there was user click on CellList before that the same thing happens: first, selection changes to 0, second, it goes back to previously selected if new selection of data contains that element.

upd (for Ümit's question):

nextButton.addClickHandler(new ClickHandler() {
  @Override
  public void onClick(ClickEvent event) {
      /* Omitting checks that there are elements on the list,
         some element is selected and isn't last */
      T value = dataProvider.getList().get(currentIndex() + 1);
      singleSelectionModel.setSelected(value, true);
      singleSelectionModel.isSelected(value);
      Element rowElement = cellList.getRowElement(index);
      rowElement.scrollIntoView();
  }
}

upd: Found what was causing this problem: http://code.google.com/p/google-web-toolkit/issues/detail?id=6310

Answer 1

It seems you need to use HandlerRegistration. So multiple click event is not called.

Refer to:

GWT Handler Registratin

and

related link