1 /* 2 * Copyright (c) 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.control; 27 28 import com.sun.javafx.scene.layout.RegionHelper; 29 import com.sun.javafx.util.Utils; 30 import javafx.scene.Node; 31 import javafx.scene.control.Control; 32 33 /* 34 * Used to access internal methods of Control. 35 */ 36 public class ControlHelper extends RegionHelper { 37 private static final ControlHelper theInstance; 38 private static ControlAccessor controlAccessor; 39 40 static { 41 theInstance = new ControlHelper(); 42 Utils.forceInit(Control.class); 43 } 44 45 private static ControlHelper getInstance() { 46 return theInstance; 47 } 48 49 public static void initHelper(Control control) { 50 setHelper(control, getInstance()); 51 } 52 53 public static void superProcessCSS(Node node) { 54 ((ControlHelper) getHelper(node)).superProcessCSSImpl(node); 55 } 56 57 void superProcessCSSImpl(Node node) { 58 super.processCSSImpl(node); 59 } 60 61 protected void processCSSImpl(Node node) { 62 controlAccessor.doProcessCSS(node); 63 } 64 65 66 public static void setControlAccessor(final ControlAccessor newAccessor) { 67 if (controlAccessor != null) { 68 throw new IllegalStateException(); 69 } 70 71 controlAccessor = newAccessor; 72 } 73 74 public interface ControlAccessor { 75 void doProcessCSS(Node node); 76 } 77 78 }