/*
 * Copyright (c) 2008 Stiftung Deutsches Elektronen-Synchrotron,
 * Member of the Helmholtz Association, (DESY), HAMBURG, GERMANY.
 *
 * THIS SOFTWARE IS PROVIDED UNDER THIS LICENSE ON AN "../AS IS" BASIS.
 * WITHOUT WARRANTY OF ANY KIND, EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED
 * TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR PARTICULAR PURPOSE AND
 * NON-INFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE
 * FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR
 * THE USE OR OTHER DEALINGS IN THE SOFTWARE. SHOULD THE SOFTWARE PROVE DEFECTIVE
 * IN ANY RESPECT, THE USER ASSUMES THE COST OF ANY NECESSARY SERVICING, REPAIR OR
 * CORRECTION. THIS DISCLAIMER OF WARRANTY CONSTITUTES AN ESSENTIAL PART OF THIS LICENSE.
 * NO USE OF ANY SOFTWARE IS AUTHORIZED HEREUNDER EXCEPT UNDER THIS DISCLAIMER.
 * DESY HAS NO OBLIGATION TO PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS,
 * OR MODIFICATIONS.
 * THE FULL LICENSE SPECIFYING FOR THE SOFTWARE THE REDISTRIBUTION, MODIFICATION,
 * USAGE AND OTHER RIGHTS AND OBLIGATIONS IS INCLUDED WITH THE DISTRIBUTION OF THIS
 * PROJECT IN THE FILE LICENSE.HTML. IF THE LICENSE IS NOT INCLUDED YOU MAY FIND A COPY
 * AT HTTP://WWW.DESY.DE/LEGAL/LICENSE.HTM
 */
package org.csstudio.sds.ui.internal.editor.dnd;

import java.util.ArrayList;
import java.util.List;

import org.csstudio.dal.ui.dnd.rfc.ProcessVariableAddressTransfer;
import org.csstudio.platform.model.pvs.IProcessVariableAddress;
import org.eclipse.gef.EditPartViewer;
import org.eclipse.swt.dnd.TransferData;

/**
 * Drop target listener that processes an array of
 * {@link IProcessVariableAddress}.
 * 
 * @author Sven Wende
 */
public final class ProcessVariableAddressDropTargetListener extends AbstractDropTargetListener<ProcessVariableAddressTransfer> {

	public ProcessVariableAddressDropTargetListener(final EditPartViewer viewer) {
		super(viewer, ProcessVariableAddressTransfer.getInstance());
	}

	@Override
	protected String[] translate(ProcessVariableAddressTransfer transfer, TransferData transferData) {
		final IProcessVariableAddress[] pvs = (IProcessVariableAddress[]) ProcessVariableAddressTransfer.getInstance().nativeToJava(transferData);

		List<String> pvNames = new ArrayList<String>();
		if (pvs != null) {
			for (IProcessVariableAddress pv : pvs) {
				pvNames.add(pv.getFullName());
			}
		}

		return pvNames.toArray(new String[pvNames.size()]);
	}
}