/*
 *  RapidMiner
 *
 *  Copyright (C) 2001-2014 by RapidMiner and the contributors
 *
 *  Complete list of developers available at our web site:
 *
 *       http://rapidminer.com
 *
 *  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.rapidminer.gui.new_plotter.gui.dnd;

import java.awt.datatransfer.DataFlavor;
import java.awt.datatransfer.Transferable;
import java.awt.datatransfer.UnsupportedFlavorException;
import java.io.IOException;

import com.rapidminer.gui.new_plotter.configuration.DataTableColumn;


/**
 * A container to transfer multiple {@link DataTableColumn}s via DragAndDrop.
 * 
 * @author Nils Woehler
 *
 */
public class DataTableColumnCollectionTransferable implements Transferable {

	private final DataTableColumnCollection collection;
	
	public DataTableColumnCollectionTransferable(DataTableColumnCollection collection) {
		this.collection = collection;
	}
	
	@Override
	public DataFlavor[] getTransferDataFlavors() {
		DataFlavor[] dataFlavour = {DataTableColumnCollection.DATATABLE_COLUMN_COLLECTION_FLAVOR};
		return dataFlavour;
	}

	@Override
	public boolean isDataFlavorSupported(DataFlavor flavor) {
		if(flavor.match(DataTableColumnCollection.DATATABLE_COLUMN_COLLECTION_FLAVOR)) {
			return true;
		}
		return false;
	}
	
	@Override
	public Object getTransferData(DataFlavor flavor) throws UnsupportedFlavorException, IOException {
		if(isDataFlavorSupported(flavor)) {
			return collection;
		}
		throw new UnsupportedFlavorException(flavor);
	}

}