RadioButtonGroup setting a value not present in the data provider

Vaadin 6 / 7 / 8 Framework UI
1

Hello Everyone,

I’ve made a ‘Generic’ RadioButtonGroup for Yes/No selection and it return a ‘Y’ or ‘N’ value.
Sometimes when initializing the form, it’s possible that I do a setValue() with another value thant the ‘Y’ or ‘N’.
On the screen, nothing is selected and that is ok, but if I do a getSelectedItem(), it return the other value instead of null.

	public static RadioButtonGroup<String> createYesNoField(Layout layout, String caption, String placeHolder,  boolean readOnly) {
		List <String> ynList = Arrays.asList(placeHolder.split("[|]
"));
		RadioButtonGroup<String> rbS = new RadioButtonGroup<String>(caption, ynList);
        rbS.setItemCaptionGenerator(item -> item.equals("N")?"NO":"YES");
        rbS.addStyleName(ValoTheme.OPTIONGROUP_HORIZONTAL);
        rbS.setReadOnly(readOnly);
        layout.addComponent(rbS);
        return rbS;
	}
	
	RadioButtonGroup<String> rbg = createYesNoField(this, "Output PDF?:","Y|N", false);
	rbg.addSelectionListener(event -> {System.out.printf("%s | %s | %s | %s\n", 
        		                                             rbg.getValue(), 
        		                                             rbg.getSelectedItem(), 
        		                                             rbg.isEmpty(), 
        		                                             rbg.getOptionalValue()
        		                                             );    
                                                            });
        
     rbg.setSelectedItem("g");

and the output is : g | Optional[g]
| false | Optional[g]

2

Sometimes when initializing the form, it’s possible that I do a setValue() with another value thant the ‘Y’ or ‘N’.

May I ask why?

3

Language issues, data comming from an old application (30 years old) that still contains some bugs issues… and very difficult to fix.

4

Perhaps best to report the issue here as well: https://github.com/vaadin/framework/issues.

In the meanwhile, you could create your own component that extends RadioButtonGroup and overrides getValue.