/*
* Databinder: a simple bridge from Wicket to Hibernate
* Copyright (C) 2006 Nathan Hamblen nathan@technically.us
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
package net.databinder.components;
import java.util.Collections;
import java.util.List;
import org.apache.wicket.ResourceReference;
import org.apache.wicket.markup.html.list.ListItem;
/** Move the given list item up in its list. */
public class MoveUpButton extends ListItemButton {
public MoveUpButton(String id, ListItem item) {
super(id, item, new ResourceReference(MoveUpButton.class, "image/up-arrow.png"));
}
@Override
public void onSubmit() {
List list = getListView().getList();
int index = item.getIndex();
getListView().modelChanging();
Collections.swap(list, index, index - 1);
getListView().modelChanged();
}
@Override
public boolean isEnabled() {
return item.getIndex() > 0;
}
}