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; 27 28 import com.sun.javafx.geom.BaseBounds; 29 import com.sun.javafx.geom.PickRay; 30 import com.sun.javafx.geom.transform.BaseTransform; 31 import com.sun.javafx.scene.input.PickResultChooser; 32 import com.sun.javafx.scene.traversal.ParentTraversalEngine; 33 import com.sun.javafx.sg.prism.NGNode; 34 import com.sun.javafx.util.Utils; 35 import java.util.List; 36 import javafx.scene.Node; 37 import javafx.scene.Parent; 38 39 /* 40 * Used to access internal methods of Parent. 41 * Note: ParentHelper needs to be a concrete class even though Parent is an 42 * abstract class since user is allowed to subclass Parent. 43 */ 44 public class ParentHelper extends NodeHelper { 45 46 private static final ParentHelper theInstance; 47 private static ParentAccessor parentAccessor; 48 49 static { 50 theInstance = new ParentHelper(); 51 Utils.forceInit(Parent.class); 52 } 53 54 private static ParentHelper getInstance() { 55 return theInstance; 56 } 57 58 public static void initHelper(Parent parent) { 59 setHelper(parent, getInstance()); 60 } 61 62 public static void superProcessCSS(Node node) { 63 ((ParentHelper) getHelper(node)).superProcessCSSImpl(node); 64 } 65 66 public static List<String> getAllParentStylesheets(Parent parent) { 67 return ((ParentHelper) getHelper(parent)).getAllParentStylesheetsImpl(parent); 68 } 69 70 @Override 71 protected NGNode createPeerImpl(Node node) { 72 return parentAccessor.doCreatePeer(node); 73 } 74 75 @Override 76 protected void updatePeerImpl(Node node) { 77 super.updatePeerImpl(node); 78 parentAccessor.doUpdatePeer(node); 79 } 80 81 @Override 82 protected BaseBounds computeGeomBoundsImpl(Node node, BaseBounds bounds, 83 BaseTransform tx) { 84 return parentAccessor.doComputeGeomBounds(node, bounds, tx); 85 } 86 87 @Override 88 protected boolean computeContainsImpl(Node node, double localX, double localY) { 89 return parentAccessor.doComputeContains(node, localX, localY); 90 } 91 92 void superProcessCSSImpl(Node node) { 93 super.processCSSImpl(node); 94 } 95 96 @Override 97 protected void processCSSImpl(Node node) { 98 parentAccessor.doProcessCSS(node); 99 } 100 101 protected List<String> getAllParentStylesheetsImpl(Parent parent) { 102 return parentAccessor.doGetAllParentStylesheets(parent); 103 } 104 105 @Override 106 protected void pickNodeLocalImpl(Node node, PickRay localPickRay, 107 PickResultChooser result) { 108 parentAccessor.doPickNodeLocal(node, localPickRay, result); 109 } 110 111 public static boolean pickChildrenNode(Parent parent, PickRay pickRay, 112 PickResultChooser result) { 113 return parentAccessor.pickChildrenNode(parent, pickRay, result); 114 } 115 116 public static void setTraversalEngine(Parent parent, ParentTraversalEngine value) { 117 parentAccessor.setTraversalEngine(parent, value); 118 } 119 120 public static ParentTraversalEngine getTraversalEngine(Parent parent) { 121 return parentAccessor.getTraversalEngine(parent); 122 } 123 124 public static void setParentAccessor(final ParentAccessor newAccessor) { 125 if (parentAccessor != null) { 126 throw new IllegalStateException(); 127 } 128 129 parentAccessor = newAccessor; 130 } 131 132 public interface ParentAccessor { 133 NGNode doCreatePeer(Node node); 134 void doUpdatePeer(Node node); 135 boolean doComputeContains(Node node, double localX, double localY); 136 BaseBounds doComputeGeomBounds(Node node, BaseBounds bounds, BaseTransform tx); 137 void doProcessCSS(Node node); 138 void doPickNodeLocal(Node node, PickRay localPickRay, PickResultChooser result); 139 boolean pickChildrenNode(Parent parent, PickRay pickRay, PickResultChooser result); 140 void setTraversalEngine(Parent parent, ParentTraversalEngine value); 141 ParentTraversalEngine getTraversalEngine(Parent parent); 142 List<String> doGetAllParentStylesheets(Parent parent); 143 } 144 145 }