1 /*
   2  * Copyright (c) 2018, 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 java.security.AccessController;
  29 import java.security.PrivilegedAction;
  30 import java.lang.reflect.Constructor;
  31 
  32 public abstract class InteropFactory {
  33     private static InteropFactory instance = null;
  34     private static boolean verbose = false;
  35 
  36     static {
  37         AccessController.doPrivileged(new PrivilegedAction<Object>() {
  38             public Object run() {
  39                 verbose = Boolean.valueOf(
  40                                 System.getProperty("javafx.embed.swing.verbose"));
  41                 return null;
  42             }
  43         });
  44     }
  45 
  46     private static final String[] factoryNames = {
  47         "com.sun.javafx.embed.swing.newimpl.InteropFactoryN",
  48         "com.sun.javafx.embed.swing.oldimpl.InteropFactoryO"
  49     };
  50 
  51     public synchronized static InteropFactory getInstance() throws Exception {
  52         if (instance != null) return instance;
  53 
  54         Class factoryClass = null;
  55         for (String factoryName : factoryNames) {
  56             try {
  57                 factoryClass = Class.forName(factoryName);
  58                 Constructor<InteropFactory> cons = factoryClass.getConstructor();
  59                 instance = cons.newInstance();
  60                 return instance;
  61             } catch (Exception e) {
  62                 System.err.println("InteropFactory: cannot load " + factoryClass);
  63                 if (verbose) {
  64                     e.printStackTrace();
  65                 }
  66             }
  67         }
  68         throw new Exception("No swing interop factory can be loaded");
  69     }
  70 
  71     public abstract SwingNodeInterop createSwingNodeImpl();
  72     public abstract JFXPanelInterop createJFXPanelImpl();
  73     public abstract FXDnDInterop createFXDnDImpl();
  74     public abstract SwingFXUtilsImplInterop createSwingFXUtilsImpl();
  75 }
  76