Jurrie,
this goes very well. I use check boxes in repeaters for the same reason.
Just have a look at the following snippets.
....
dynamicContents.add(listView = new DataView("whatever",
getDataProvider(), 15)
{
@Override
protected void populateItem(Item listItem) {
final Whatever whatever =
(Whatever)listItem.getModelObject();
//log.debug("populateItem()
whatever="+whatever.getControlnumber()+" =>
"+selection.contains(whatever.getId()));
final SelectionModel<Whatever> selectionModel = new
SelectionModel<Whatever>(whatever, selection.contains(whatever.getId()));
final CheckBox checkBox = new AjaxCheckBox("selected",
selectionModel) {
@Override
public void onUpdate(AjaxRequestTarget target) {
Boolean selected = selectionModel.getObject();
Long id = selectionModel.getSelection().getId();
if (selected)
selection.add(id);
else
selection.remove(id);
log.debug("selected.onUpdate: "+selected+" for
id="+id);
}
};
checkBox.setOutputMarkupId(true);
checkBox.setVisible(selectionEnabled);
selectionBoxes.put(selectionModel, checkBox);
listItem.add(checkBox);
listItem.add(new Label("dmcControlnumber", new
PropertyModel(whatever, "controlnumber")));
...
This requires a simple class what simply reflects the selection state of
the selected/unselected rows collected in a map. It is a bit tricky if
you start up with some rows already selected and dataproviders
supporting lazy loads . Then you might have to setup the selection
models on creation only for visible rows and merge afterwards.
Best regards
Hannes
Jurrie Overgoor wrote:
Hello everyone,
I'm currently creating a Wicket application, and for this I need a
repeater that lets the user select multiple rows from a list of items.
So basically a repeater that adds a checkbox in front of every item.
Is this component available? I remember seeing this somewhere, but I
forgot where, and I can't seem to find it again.
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