no RadioButtonCell in GWT 2.4 Cell?

[tong123123]

I check the GWT 2.4 API
and found there is no RadioButtonCell, so if I need a column with
radio button on each row, how to do it using GWT 2.4? any easy method
or must custom write once?

[kretel]

Have a look at showcase samples: 

http://gwt.google.com/samples/Showcase/Showcase.html#!CwCellTable 

Regards, 

Kris

[Philippe Lhoste]

Why would you want a radio button per row? To select only one row?

--
Philippe Lhoste
-- (near) Paris -- France
-- http://Phi.Lho.free.fr
-- -- -- -- -- -- -- -- -- -- -- -- -- --

[tong123123]

yes, exactly. I want to show several rows in a cellTable, each row has
a radio button, user select that radio button and press a button,
then the detail of that row will be shown.
any method?

[Thomas Broyer]

You can use a CheckboxCell coupled with a SingleSelectionModel, the selection model will take care of keeping only a single checkbox selected.

Or search the archives of this group, someone posted a RadioButtonCell implementation a few months ago.

[tong123123]

I don't know how to use a CheckboxCell coupled with a SingleSelectionModel.
CheckboxCell selected = new CheckboxCell();
Column<Log, Boolean> chkColumn = new Column<Log, Boolean>(selected){
   public Boolean getValue(Log log){
        return log.getSelected();
   }
};

table.addColumn(chkColumn, "selected");
final SingleSelectionModel<Log> singleSelectionModel = new SingleSelectionModel<Log>();
table.setSelectionModel(singleSelectionModel);

but when I run the program, I found that if I click on a row, the row get focus first, then I need a second mouse click to cause to checkbox checked, then if I click the checkbox in another row, that row get selected but the checkbox of that row is not checked and I need to click the checkbox once again to selected it.

why will this happen?

[tong123123]

I try to add a SelectionChangeHandler to the table as follow:
singleSelectionModel.addSelectionChangeHandler(new
SelectionChangeEvent.Handler(){
public void onSelectionChange(SelectionChangeEvent event){
Log selectedLog =
singleSelectionModel.getSelectedObject();
selectedLog.setSelected(true);
}});
table.setSelectionModel(singleSelectionModel);

but after adding this code, user can select multi checkbox now!!
So how to make a table with a column checkbox and then only allow user
to select one checkbox only?