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.shape;
  27 
  28 import com.sun.javafx.sg.prism.NGNode;
  29 import com.sun.javafx.util.Utils;
  30 import javafx.scene.Node;
  31 import javafx.scene.paint.Paint;
  32 import javafx.scene.shape.Polyline;
  33 import javafx.scene.shape.Shape;
  34 
  35 /**
  36  * Used to access internal methods of Polyline.
  37  */
  38 public class PolylineHelper extends ShapeHelper {
  39 
  40     private static final PolylineHelper theInstance;
  41     private static PolylineAccessor polylineAccessor;
  42 
  43     static {
  44         theInstance = new PolylineHelper();
  45         Utils.forceInit(Polyline.class);
  46     }
  47 
  48     private static PolylineHelper getInstance() {
  49         return theInstance;
  50     }
  51 
  52     public static void initHelper(Polyline polyline) {
  53         setHelper(polyline, getInstance());
  54     }
  55 
  56     @Override
  57     protected NGNode createPeerImpl(Node node) {
  58         return polylineAccessor.doCreatePeer(node);
  59     }
  60 
  61     @Override
  62     protected void updatePeerImpl(Node node) {
  63         super.updatePeerImpl(node);
  64         polylineAccessor.doUpdatePeer(node);
  65     }
  66 
  67     @Override
  68     protected Paint cssGetFillInitialValueImpl(Shape shape) {
  69         return polylineAccessor.doCssGetFillInitialValue(shape);
  70     }
  71 
  72     @Override
  73     protected Paint cssGetStrokeInitialValueImpl(Shape shape) {
  74         return polylineAccessor.doCssGetStrokeInitialValue(shape);
  75     }
  76 
  77     @Override
  78     protected com.sun.javafx.geom.Shape configShapeImpl(Shape shape) {
  79         return polylineAccessor.doConfigShape(shape);
  80     }
  81 
  82     public static void setPolylineAccessor(final PolylineAccessor newAccessor) {
  83         if (polylineAccessor != null) {
  84             throw new IllegalStateException();
  85         }
  86 
  87         polylineAccessor = newAccessor;
  88     }
  89 
  90     public interface PolylineAccessor {
  91         NGNode doCreatePeer(Node node);
  92         void doUpdatePeer(Node node);
  93         Paint doCssGetFillInitialValue(Shape shape);
  94         Paint doCssGetStrokeInitialValue(Shape shape);
  95         com.sun.javafx.geom.Shape doConfigShape(Shape shape);
  96     }
  97 
  98 }