GroupSelectionService.java

/**
 *  C-Nery - A home automation web group for C-Bus.
 *  Copyright (C) 2008,2009,2012  Dave Oxley <dave@daveoxley.co.uk>.
 *
 *  This program is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU Affero General Public License as
 *  published by the Free Software Foundation, either version 3 of the
 *  License, or (at your option) any later version.
 *
 *  This program 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 Affero General Public License for more details.
 *
 *  You should have received a copy of the GNU Affero General Public License
 *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
 *
 */

package com.daveoxley.cnery.services;

import com.daveoxley.cbus.Application;
import com.daveoxley.cbus.Group;
import com.daveoxley.seam.SelectionService;
import com.daveoxley.seam.exceptions.EntityNotFoundException;
import java.io.Serializable;
import java.util.List;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.jboss.seam.ScopeType;
import org.jboss.seam.annotations.In;
import org.jboss.seam.annotations.Name;
import org.jboss.seam.annotations.Observer;
import org.jboss.seam.annotations.Out;
import org.jboss.seam.annotations.Scope;
import org.jboss.seam.core.Events;

/**
 *
 * @author Dave Oxley <dave@daveoxley.co.uk>
 */
@Name("groupSelectionService")
@Scope(ScopeType.PAGE)
public class GroupSelectionService extends SelectionService<Integer> implements Serializable {

    private final static Log log = LogFactory.getLog(GroupSelectionService.class);

    @In
    private Events events;

    @In(required=false)
    private Application selectedApplication;

    @Out(value="selectedGroupAddresses",required=false,scope=ScopeType.PAGE)
    @Override
    public List<Integer> getSelectedIds() {
        return super.getSelectedIds();
    }

    @Override
    public void setSelectedIds(List<Integer> selectedIds) throws EntityNotFoundException {
        super.setSelectedIds(selectedIds);
    }

    @Override
    protected Integer cast(Object o) {
        return (Integer)o;
    }

    @Out(required=false)
    public Group[] getSelectedGroups() throws Exception {
        List<Integer> selectedGroupAddresses = getSelectedIds();
        if (selectedGroupAddresses == null || selectedGroupAddresses.isEmpty())
            return null;

        Group[] selectedGroups = new Group[selectedGroupAddresses.size()];
        for (int i = 0; i < selectedGroupAddresses.size(); i++) {
            try {
                selectedGroups[i] = selectedApplication.getGroup(selectedGroupAddresses.get(i));
            } catch (Exception ex) {
                throw new EntityNotFoundException(selectedGroupAddresses.get(i));
            }
        }
        return selectedGroups;
    }

    @Observer(create=false,value="clearGroupSelection")
    public void clearGroupSelection() {
        events.raiseEvent("groupsUpdated", (Object)null);
    }

    @Observer(create=false,value="groupsUpdated")
    public void updateGroupSelection(List<Integer> selectionKeys) throws EntityNotFoundException {
        setSelectedIds(selectionKeys);
    }
}