1 /*
2 * Copyright 1997-1999 Sun Microsystems, Inc. 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. Sun designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Sun 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
22 * CA 95054 USA or visit www.sun.com if you need additional information or
23 * have any questions.
24 */
25
26 package java.awt.dnd;
27
28 /**
29 * This class contains constant values representing
30 * the type of action(s) to be performed by a Drag and Drop operation.
31 * @since 1.2
32 */
33
34 public final class DnDConstants {
35
36 private DnDConstants() {} // define null private constructor.
37
38 /**
39 * An <code>int</code> representing no action.
40 */
41 public static final int ACTION_NONE = 0x0;
42
43 /**
44 * An <code>int</code> representing a "copy" action.
45 */
46 public static final int ACTION_COPY = 0x1;
47
48 /**
49 * An <code>int</code> representing a "move" action.
50 */
51 public static final int ACTION_MOVE = 0x2;
52
53 /**
54 * An <code>int</code> representing a "copy" or
55 * "move" action.
56 */
57 public static final int ACTION_COPY_OR_MOVE = ACTION_COPY | ACTION_MOVE;
58
59 /**
60 * An <code>int</code> representing a "link" action.
61 *
62 * The link verb is found in many, if not all native DnD platforms, and the
63 * actual interpretation of LINK semantics is both platform
64 * and application dependent. Broadly speaking, the
65 * semantic is "do not copy, or move the operand, but create a reference
66 * to it". Defining the meaning of "reference" is where ambiguity is
67 * introduced.
68 *
69 * The verb is provided for completeness, but its use is not recommended
70 * for DnD operations between logically distinct applications where
71 * misinterpretation of the operations semantics could lead to confusing
72 * results for the user.
73 */
74
75 public static final int ACTION_LINK = 0x40000000;
76
77 /**
78 * An <code>int</code> representing a "reference"
79 * action (synonym for ACTION_LINK).
80 */
81 public static final int ACTION_REFERENCE = ACTION_LINK;
82
83 }
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