1/* 2 * Copyright (c) 1998, 2013, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. Oracle designates this 8 * particular file as subject to the "Classpath" exception as provided 9 * by Oracle in the LICENSE file that accompanied this code. 10 * 11 * This code is distributed in the hope that it will be useful, but WITHOUT 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 * version 2 for more details (a copy is included in the LICENSE file that 15 * accompanied this code). 16 * 17 * You should have received a copy of the GNU General Public License version 18 * 2 along with this work; if not, write to the Free Software Foundation, 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 20 * 21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 22 * or visit www.oracle.com if you need additional information or have any 23 * questions. 24 */ 25 26 27 28package java.awt.dnd; 29 30import java.util.EventListener; 31 32/** 33 * The listener interface for receiving drag gesture events. 34 * This interface is intended for a drag gesture recognition 35 * implementation. See a specification for {@code DragGestureRecognizer} 36 * for details on how to register the listener interface. 37 * Upon recognition of a drag gesture the {@code 38 * DragGestureRecognizer} calls this interface's 39 * {@link #dragGestureRecognized dragGestureRecognized()} 40 * method and passes a {@code DragGestureEvent}. 41 42 * 43 * @see java.awt.dnd.DragGestureRecognizer 44 * @see java.awt.dnd.DragGestureEvent 45 * @see java.awt.dnd.DragSource 46 */ 47 48 public interface DragGestureListener extends EventListener { 49 50 /** 51 * This method is invoked by the {@code DragGestureRecognizer} 52 * when the {@code DragGestureRecognizer} detects a platform-dependent 53 * drag initiating gesture. To initiate the drag and drop operation, 54 * if appropriate, {@link DragGestureEvent#startDrag startDrag()} method on 55 * the {@code DragGestureEvent} has to be invoked. 56 * 57 * @see java.awt.dnd.DragGestureRecognizer 58 * @see java.awt.dnd.DragGestureEvent 59 * @param dge the {@code DragGestureEvent} describing 60 * the gesture that has just occurred 61 */ 62 63 void dragGestureRecognized(DragGestureEvent dge); 64} 65