1 /* 2 * Copyright (c) 2013, 2016, 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 com.sun.javafx.scene.input; 27 28 import com.sun.javafx.tk.TKClipboard; 29 import javafx.scene.input.Dragboard; 30 31 /** 32 * Used to access internal methods of Dragboard. 33 */ 34 public class DragboardHelper { 35 private static DragboardAccessor dragboardAccessor; 36 37 static { 38 forceInit(Dragboard.class); 39 } 40 41 private DragboardHelper() { 42 } 43 44 public static void setDataAccessRestriction(Dragboard dragboard, 45 boolean restricted) { 46 dragboardAccessor.setDataAccessRestriction(dragboard, restricted); 47 } 48 49 public static TKClipboard getPeer(Dragboard dragboard) { 50 return dragboardAccessor.getPeer(dragboard); 51 } 52 53 public static Dragboard createDragboard(TKClipboard peer) { 54 return dragboardAccessor.createDragboard(peer); 55 } 56 57 public static void setDragboardAccessor(final DragboardAccessor newAccessor) { 58 if (dragboardAccessor != null) { 59 throw new IllegalStateException(); 60 } 61 62 dragboardAccessor = newAccessor; 63 } 64 65 public interface DragboardAccessor { 66 void setDataAccessRestriction(Dragboard dragboard, boolean restricted); 67 TKClipboard getPeer(Dragboard dragboard); 68 Dragboard createDragboard(TKClipboard peer); 69 } 70 71 private static void forceInit(final Class<?> classToInit) { 72 try { 73 Class.forName(classToInit.getName(), true, 74 classToInit.getClassLoader()); 75 } catch (final ClassNotFoundException e) { 76 throw new AssertionError(e); // Can't happen 77 } 78 } 79 }