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.embed.swing;
  27 
  28 import com.sun.javafx.geom.BaseBounds;
  29 import com.sun.javafx.geom.transform.BaseTransform;
  30 import com.sun.javafx.jmx.MXNodeAlgorithm;
  31 import com.sun.javafx.jmx.MXNodeAlgorithmContext;
  32 import com.sun.javafx.scene.NodeHelper;
  33 import com.sun.javafx.sg.prism.NGNode;
  34 import com.sun.javafx.util.Utils;
  35 import javafx.embed.swing.SwingNode;
  36 import javafx.scene.Node;
  37 
  38 /**
  39  * Used to access internal methods of SwingNode.
  40  */
  41 public class SwingNodeHelper extends NodeHelper {
  42 
  43     private static final SwingNodeHelper theInstance;
  44     private static SwingNodeAccessor swingNodeAccessor;
  45 
  46     static {
  47         theInstance = new SwingNodeHelper();
  48         Utils.forceInit(SwingNode.class);
  49     }
  50 
  51     private static SwingNodeHelper getInstance() {
  52         return theInstance;
  53     }
  54 
  55     public static void initHelper(SwingNode swingNode) {
  56         setHelper(swingNode, getInstance());
  57     }
  58 
  59     @Override
  60     protected NGNode createPeerImpl(Node node) {
  61         return swingNodeAccessor.doCreatePeer(node);
  62     }
  63 
  64     @Override
  65     protected void updatePeerImpl(Node node) {
  66         super.updatePeerImpl(node);
  67         swingNodeAccessor.doUpdatePeer(node);
  68     }
  69 
  70     @Override
  71     protected BaseBounds computeGeomBoundsImpl(Node node, BaseBounds bounds,
  72             BaseTransform tx) {
  73         return swingNodeAccessor.doComputeGeomBounds(node, bounds, tx);
  74     }
  75 
  76     @Override
  77     protected boolean computeContainsImpl(Node node, double localX, double localY) {
  78         return swingNodeAccessor.doComputeContains(node, localX, localY);
  79     }
  80 
  81     @Override
  82     protected Object processMXNodeImpl(Node node, MXNodeAlgorithm alg, MXNodeAlgorithmContext ctx) {
  83         return swingNodeAccessor.doProcessMXNode(node, alg, ctx);
  84     }
  85 
  86     public static void setSwingNodeAccessor(final SwingNodeAccessor newAccessor) {
  87         if (swingNodeAccessor != null) {
  88             throw new IllegalStateException();
  89         }
  90 
  91         swingNodeAccessor = newAccessor;
  92     }
  93 
  94     public interface SwingNodeAccessor {
  95         NGNode doCreatePeer(Node node);
  96         void doUpdatePeer(Node node);
  97         BaseBounds doComputeGeomBounds(Node node, BaseBounds bounds, BaseTransform tx);
  98         boolean doComputeContains(Node node, double localX, double localY);
  99         Object doProcessMXNode(Node node, MXNodeAlgorithm alg, MXNodeAlgorithmContext ctx);
 100     }
 101 
 102 }