t.setSelectable(true);
t.setMultiSelect(false);
t.setWidth(200, Sizeable.UNITS_PIXELS);
t.setHeight(100, Sizeable.UNITS_PIXELS);
t.select(v1);
t.focus();
t.setMultiSelect(true);
getLayout().addComponent(t);
getLayout().addComponent(
new Button("Change elements and selection",