Fixes issue #279

[crevete]

I will make an another PR to fix this issue. Thanks

[peterdresslar]

My mistake, sorry. Was trying to accomplish something like this:

private void addNewStringAsSelectedOption(String name) {
        Select select = new Select();
        Option newOpt = new Option();
        //do stuff
        newOpt.setId(name);
        //want to add newOpt to select as selected, but want to leave existing selections selected
        List<Option> selectedOpts = select.getAllSelectedOptions();
        selectedOpts.add(newOpt);
        List<String> newSelectedValues = new ArrayList<>(0);
        for Option o : selectedOpts {
            newSelectedValues.add(o.getName());
        }
        select.setSelectedValue(newSelectedValues);
    }

This itself could be a method but I do not know if it would be appropriate to extend the API that far

[crevete]

Ok now I understand well :-) But to do this, you don't have to call the setSelectedValue(newSelectedValues) method. You could just do something like this:

MultipleSelect select = new MultipleSelect();
Option newOpt = new Option();
newOpt.setId(name);
newOpt.setSelected(true);
select.add(newOpt);
select.refresh(); // or maybe select.render();

[peterdresslar]

Ah, it was select.refresh(); that eluded us. That works. Still the methods might be useful elsewhere, thanks for the help