Why CellList with ButtonCell column controled by cellListDataProvider behave bizarrely? is it a Gwt bug?

Question

I am using Gwt 2.5, i got this very simple code:

ButtonCell buttonCell=new ButtonCell();
CellList<String> cellList = new CellList<String>(buttonCell);
ListDataProvider<String> cellListDataProvider = new ListDataProvider<String>();
List<String> data = cellListDataProvider.getList();
for (int i = 1; i < 12; i++) {

  data.add( String.valueOf(i));
}
cellListDataProvider.addDataDisplay(cellList);
SimplePager pager=new SimplePager();
pager.setDisplay(cellList);
pager.setPageSize(3);

Ok, now i ran, at the beginning it shows:

1
2
3

When i click 1 or 2 or 3 it doesn't jump to next page, that is good no problem

Then i click nextPage, it shows:

4
5
6

Now I click 4 then nothing happened but if i click 5 or 6 then it automatically jumps to the next page to display though I did not click the nextpgae in pager:

7
8
9

So what is wrong with that?

If i change ButtonCell to TextCell, then there is no problem at all.

Answer 1

The issue is due to DefaultKeyboardSelectionHandler.Check execution of that handler. You can fix your issue by disabling KeyboardSelectionPolicy of your CellList

cellList.setKeyboardSelectionPolicy(KeyboardSelectionPolicy.DISABLED);