/*
* This file is part of the OpenSCADA project
* Copyright (C) 2006-2010 TH4 SYSTEMS GmbH (http://th4-systems.com)
*
* OpenSCADA is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License version 3
* only, as published by the Free Software Foundation.
*
* OpenSCADA 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 version 3 for more details
* (a copy is included in the LICENSE file that accompanied this code).
*
* You should have received a copy of the GNU Lesser General Public License
* version 3 along with OpenSCADA. If not, see
* <http://opensource.org/licenses/lgpl-3.0.html> for a copy of the LGPLv3 License.
*/
package org.openscada.core.ui.connection.commands;
import java.util.Collection;
import java.util.Iterator;
import java.util.LinkedList;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.openscada.core.ui.connection.data.ConnectionHolder;
import org.openscada.ui.databinding.AbstractSelectionHandler;
import org.openscada.ui.databinding.AdapterHelper;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public abstract class AbstractConnectionHandler extends AbstractSelectionHandler
{
private static final Logger logger = LoggerFactory.getLogger ( AbstractConnectionHandler.class );
protected Collection<ConnectionHolder> getConnections ()
{
final Collection<ConnectionHolder> result = new LinkedList<ConnectionHolder> ();
final IStructuredSelection sel = getSelection ();
if ( sel != null && !sel.isEmpty () )
{
for ( final Iterator<?> i = sel.iterator (); i.hasNext (); )
{
final Object o = i.next ();
logger.debug ( "Try to add: {}", o.getClass () ); //$NON-NLS-1$
final ConnectionHolder holder = (ConnectionHolder)AdapterHelper.adapt ( o, ConnectionHolder.class );
if ( holder != null )
{
result.add ( holder );
}
}
}
return result;
}
}