Showing the changes to java/pkg/sun/swing/SwingAccessor.java (1 of 18352 files). Show all
Unified · Split
| @@ -0,0 +1,96 @@ | |||
| 1 | /* | ||
| 2 | * Copyright (c) 2009, 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 | package sun.swing; | ||
| 27 | |||
| 28 | import sun.misc.Unsafe; | ||
| 29 | |||
| 30 | import java.awt.Point; | ||
| 31 | |||
| 32 | import javax.swing.text.JTextComponent; | ||
| 33 | import javax.swing.TransferHandler; | ||
| 34 | |||
| 35 | /** | ||
| 36 | * The SwingAccessor utility class. | ||
| 37 | * The main purpose of this class is to enable accessing | ||
| 38 | * private and package-private fields of classes from | ||
| 39 | * different classes/packages. See sun.misc.SharedSecretes | ||
| 40 | * for another example. | ||
| 41 | */ | ||
| 42 | public final class SwingAccessor { | ||
| 43 | private static final Unsafe unsafe = Unsafe.getUnsafe(); | ||
| 44 | |||
| 45 | /** | ||
| 46 | * We don't need any objects of this class. | ||
| 47 | * It's rather a collection of static methods | ||
| 48 | * and interfaces. | ||
| 49 | */ | ||
| 50 | private SwingAccessor() { | ||
| 51 | } | ||
| 52 | |||
| 53 | /** | ||
| 54 | * An accessor for the JTextComponent class. | ||
| 55 | * Note that we intentionally introduce the JTextComponentAccessor, | ||
| 56 | * and not the JComponentAccessor because the needed methods | ||
| 57 | * aren't override methods. | ||
| 58 | */ | ||
| 59 | public interface JTextComponentAccessor { | ||
| 60 | |||
| 61 | /** | ||
| 62 | * Calculates a custom drop location for the text component, | ||
| 63 | * representing where a drop at the given point should insert data. | ||
| 64 | */ | ||
| 65 | TransferHandler.DropLocation dropLocationForPoint(JTextComponent textComp, Point p); | ||
| 66 | |||
| 67 | /** | ||
| 68 | * Called to set or clear the drop location during a DnD operation. | ||
| 69 | */ | ||
| 70 | Object setDropLocation(JTextComponent textComp, TransferHandler.DropLocation location, | ||
| 71 | Object state, boolean forDrop); | ||
| 72 | } | ||
| 73 | |||
| 74 | /** | ||
| 75 | * The javax.swing.text.JTextComponent class accessor object. | ||
| 76 | */ | ||
| 77 | private static JTextComponentAccessor jtextComponentAccessor; | ||
| 78 | |||
| 79 | /** | ||
| 80 | * Set an accessor object for the javax.swing.text.JTextComponent class. | ||
| 81 | */ | ||
| 82 | public static void setJTextComponentAccessor(JTextComponentAccessor jtca) { | ||
| 83 | jtextComponentAccessor = jtca; | ||
| 84 | } | ||
| 85 | |||
| 86 | /** | ||
| 87 | * Retrieve the accessor object for the javax.swing.text.JTextComponent class. | ||
| 88 | */ | ||
| 89 | public static JTextComponentAccessor getJTextComponentAccessor() { | ||
| 90 | if (jtextComponentAccessor == null) { | ||
| 91 | unsafe.ensureClassInitialized(JTextComponent.class); | ||
| 92 | } | ||
| 93 | |||
| 94 | return jtextComponentAccessor; | ||
| 95 | } | ||
| 96 | } | ||