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