DropTargetAdapter.java

/*******************************************************************************
 * Copyright (c) 2000, 2008, 2012 IBM Corporation, Gerhardt Informatics Kft. and others.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *     IBM Corporation - initial API and implementation
 *     Gerhardt Informatics Kft. - GEFGWT port
 *******************************************************************************/
package org.eclipse.swt.dnd;

/**
 * This adapter class provides default implementations for the methods described
 * by the <code>DropTargetListener</code> interface.
 * <p>
 * Classes that wish to deal with <code>DropTargetEvent</code>s can extend this
 * class and override only the methods which they are interested in.
 * </p>
 * 
 * @see DropTargetListener
 * @see DropTargetEvent
 * @see <a href="http://www.eclipse.org/swt/">Sample code and further
 *      information</a>
 */
public class DropTargetAdapter implements DropTargetListener {

	/**
	 * This implementation of <code>dragEnter</code> permits the default
	 * operation defined in <code>event.detail</code>to be performed on the
	 * current data type defined in <code>event.currentDataType</code>. For
	 * additional information see <code>DropTargetListener.dragEnter</code>.
	 * 
	 * @param event
	 *            the information associated with the drag enter event
	 */
	public void dragEnter(DropTargetEvent event) {
	}

	/**
	 * This implementation of <code>dragLeave</code> does nothing. For
	 * additional information see
	 * <code>DropTargetListener.dragOperationChanged</code>.
	 * 
	 * @param event
	 *            the information associated with the drag leave event
	 */
	public void dragLeave(DropTargetEvent event) {
	}

	/**
	 * This implementation of <code>dragOperationChanged</code> permits the
	 * default operation defined in <code>event.detail</code>to be performed on
	 * the current data type defined in <code>event.currentDataType</code>. For
	 * additional information see
	 * <code>DropTargetListener.dragOperationChanged</code>.
	 * 
	 * @param event
	 *            the information associated with the drag operation changed
	 *            event
	 */
	public void dragOperationChanged(DropTargetEvent event) {
	}

	/**
	 * This implementation of <code>dragOver</code> permits the default
	 * operation defined in <code>event.detail</code>to be performed on the
	 * current data type defined in <code>event.currentDataType</code>. For
	 * additional information see <code>DropTargetListener.dragOver</code>.
	 * 
	 * @param event
	 *            the information associated with the drag over event
	 */
	public void dragOver(DropTargetEvent event) {
	}

	/**
	 * This implementation of <code>drop</code> does nothing. For additional
	 * information see <code>DropTargetListener.drop</code>.
	 * 
	 * @param event
	 *            the information associated with the drop event
	 */
	public void drop(DropTargetEvent event) {
	}

	/**
	 * This implementation of <code>dropAccept</code> permits the default
	 * operation defined in <code>event.detail</code>to be performed on the
	 * current data type defined in <code>event.currentDataType</code>. For
	 * additional information see <code>DropTargetListener.dropAccept</code>.
	 * 
	 * @param event
	 *            the information associated with the drop accept event
	 */
	public void dropAccept(DropTargetEvent event) {
	}

}