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 &quot;copy&quot; action.

    45      */

    46     public static final int ACTION_COPY         = 0x1;

    47 

    48     /**

    49      * An <code>int</code> representing a &quot;move&quot; action.

    50      */

    51     public static final int ACTION_MOVE         = 0x2;

    52 

    53     /**

    54      * An <code>int</code> representing a &quot;copy&quot; 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 &quot;link&quot; 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 &quot;reference&quot;

    79      * action (synonym for ACTION_LINK).

    80      */

    81     public static final int ACTION_REFERENCE    = ACTION_LINK;

    82 

    83 }