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((PrivilegedAction<Object>) () -> {
  38             verbose = Boolean.valueOf(
  39                           System.getProperty("javafx.embed.swing.verbose"));
  40             return null;
  41         });
  42     }
  43 
  44     private static final String[] factoryNames = {
  45         "com.sun.javafx.embed.swing.newimpl.InteropFactoryN",
  46         "com.sun.javafx.embed.swing.oldimpl.InteropFactoryO"
  47     };
  48 
  49     public synchronized static InteropFactory getInstance() throws Exception {
  50         if (instance != null) return instance;
  51 
  52         Class factoryClass = null;
  53         for (String factoryName : factoryNames) {
  54             try {
  55                 factoryClass = Class.forName(factoryName);
  56                 Constructor<InteropFactory> cons = factoryClass.getConstructor();
  57                 instance = cons.newInstance();
  58                 return instance;
  59             } catch (Exception e) {
  60                 System.err.println("InteropFactory: cannot load " + factoryName);
  61                 if (verbose) {
  62                     e.printStackTrace();
  63                 }
  64             }
  65         }
  66         throw new Exception("No swing interop factory can be loaded");
  67     }
  68 
  69     public abstract SwingNodeInterop createSwingNodeImpl();
  70     public abstract JFXPanelInterop createJFXPanelImpl();
  71     public abstract FXDnDInterop createFXDnDImpl();
  72     public abstract SwingFXUtilsImplInterop createSwingFXUtilsImpl();
  73 }
  74