public void initTransferHandler() {

    	this.setTransferHandler(new TopLevelTransferHandler());

    }

package org.apache.jmeter.gui;

import java.awt.datatransfer.DataFlavor;

import java.awt.datatransfer.UnsupportedFlavorException;

import java.awt.event.ActionEvent;

import java.io.File;

import java.io.IOException;

import java.util.List;

import javax.swing.TransferHandler;

import org.apache.jmeter.gui.action.ActionNames;

import org.apache.jmeter.gui.action.LoadDraggedFile;

import org.apache.jorphan.logging.LoggingManager;

import org.apache.log.Logger;

@SuppressWarnings("serial")

final class TopLevelTransferHandler extends TransferHandler {

	private static final Logger log = LoggingManager.getLoggerForClass();

	@Override

	public boolean canImport(TransferHandler.TransferSupport support) {

		if(!support.isDataFlavorSupported(DataFlavor.javaFileListFlavor)) {

			return false;

		}

		return true;

	}

	@SuppressWarnings("unchecked")

	@Override

	public boolean importData(TransferSupport support) {

		if(!canImport(support)) {

			return false;

		}

		try {

			List<File> files = (List<File>) support.getTransferable().getTransferData(DataFlavor.javaFileListFlavor);

			if(files.isEmpty()) {

				return false;

			}

			ActionEvent fakeEvent = new ActionEvent(this, ActionEvent.ACTION_PERFORMED, ActionNames.OPEN);

			LoadDraggedFile.loadProject(fakeEvent, files.get(0));

		} catch (IOException e) {

			log.error("Importing data from DnD caused ", e);

			return false;

		} catch (UnsupportedFlavorException e) {

			log.error("Importing data from DnD caused ", e);

			return false;

		}

		return super.importData(support);

	}

}

/*

 * Licensed to the Apache Software Foundation (ASF) under one or more

 * contributor license agreements.  See the NOTICE file distributed with

 * this work for additional information regarding copyright ownership.

 * The ASF licenses this file to You under the Apache License, Version 2.0

 * (the "License"); you may not use this file except in compliance with

 * the License.  You may obtain a copy of the License at

 *

 *   http://www.apache.org/licenses/LICENSE-2.0

 *

 * Unless required by applicable law or agreed to in writing, software

 * distributed under the License is distributed on an "AS IS" BASIS,

 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

 * See the License for the specific language governing permissions and

 * limitations under the License.

 *

 */

package org.apache.jmeter.gui.action;

import java.awt.event.ActionEvent;

import java.io.File;

/**

 * Handles the loading of a file from a Drag and Drop action.

 */

public class LoadDraggedFile {

    public static void loadProject(ActionEvent e, File f) {

    	if(!Close.performAction(e)) {

    		return;

    	}

    	Load.loadProjectFile(e, f, false);

    }

}