CellTable + AsyncListViewAdapter<T>, stuck at 'loading' when paging
- by Jaroslav Záruba
Hi
I'm trying to make CellTable, AsyncListViewAdapter<T> and SimplePager<T> working together.
I managed to display my data, but whenever I click either "go to start" or "go to end" button I get that 'loading' indicator which stays there till the end of days. ( AsyncListViewAdapter<T>.onRangeChanged doesn't even get called this time.)
As I have only single row in my data those two buttons should be (and appear to be) disabled.
I went through the code-snippets in this thread, but I can't see nothing suspicions in what I've been doing.
Is there some obvious answer to a rookie mistake?
I shrinked my variable names, hopefully it won't wrap too much.
protected class MyAsyncAdapter
extends AsyncListViewAdapter<DTO> {
@Override
protected void onRangeChanged(ListView<DTO> v) {
// doesn't get called on go2start/go2end :(
Range r = v.getRange();
fetchData(r.getStart(), r.getLength());
}
}
private void addTable() {
// table:
CellTable<DTO> table = new CellTable<DTO>(10);
table.addColumn(new Column<DTO, String>(new TextCell()) {
@Override
public String getValue(DTO namespace) {
return namespace.getName();
}
}, "Name");
// pager:
SimplePager<DTO> pager = new SimplePager<DTO>(table);
table.setPager(pager);
adapter = new MyAsyncAdapter();
adapter.addView(table);
// does not make any difference:
// adapter.updateDataSize(0, false);
// adapter.updateDataSize(10, true);
VerticalPanel vPanel = new VerticalPanel();
vPanel.add(table);
vPanel.add(pager);
RootLayoutPanel.get().add(vPanel);
}
// success-handler of my fetching AsyncCallback
@Override
public void onSuccess(List<DTO> data) {
// AsyncCallback<List<DTO>> has start field
adapter.updateViewData(start, data.size(), data);
if(data.size() < length)
adapter.updateDataSize(start + data.size(), true);
}
Regards
J. Záruba
