getting ListSelect items

Vaadin 6 / 7 / 8 Framework Data Binding
1

Hi there,
I need help getting ListSelect selected items if the ListSelect is in multiselection mode.
I saw that I can use ListSelect.getProperty().
Due to my poor knowledge in java I don’t know how to get a collection or something I can iterate on.
Thanks in advance to anybody can help me.
Paolo

2

I think that this is what you are looking for.

    for (Iterator i = listSelect.getItemIds().iterator(); i.hasNext();) {

			Object iid = (Object) i.next();
			if(listSelect.isSelected(iid))
			{
				System.out.println("Selected");
			}
		}

Hope it helps,
Marios

3

The getValue() method of ListSelect in multiselect mode (as well as some other multiselect fields) returns a Set of selected item IDs.

4

Thanks Marios,
it works; can I Iterate only on the selected items on a ValueChange event? (i.e. without scrolling all items that can be a large number).
Paolo

5

Thanks Henri,
Well, I don.t know how to cast the Set on the objects of the containerDataSource.
Paolo

6

I hope it help you:

Set <Item>values=(Set<Item>) listselect.getValue();
for (Object v:values){
	System.out.println("This is selected : " + listselect.getitem(v).getItemProperty(the  property-).getValue.toString());
}