GWT + DataGrid冻结/解冻行选择

Question

So I have implemented a SingleSelectionModel to select only single row in the DataGrid.

final SingleSelectionModel<Entity> selectionModel = new SingleSelectionModel<>(keyProvider);

And I've created a checkbox that should freeze/unfreeze row selection. In other words, when the checkbox is checked, current row must be selected (blue highlighted cuz I'm using the SingleSelectionModel), and user should not be able to select another row via keyboard/mice while checkbox is checked. The row still must stay selected.

// disable row selection using selection model
    disableSelection.addValueChangeHandler(new ValueChangeHandler<Boolean>() {
        @Override
        public void onValueChange(ValueChangeEvent<Boolean> event) {
            // do stuff, any suggestions guys?
        }
    });

Maybe using NoSelectionModel, or adding a selectionChangeHandler to the existing selection model. Thanks.

Answer 1

You can try:

NoSelectionModel<Entity> noSelectionModel = new NoSelectionModel<Entity();
...
disableSelection.addValueChangeHandler(new ValueChangeHandler<Boolean>() {
    @Override
    public void onValueChange(ValueChangeEvent<Boolean> event) {
        myDataGrid.setSelectionModel(event.getValue() ? noSelectionModel : selectionModel);
    }
});