javaunohelper/test/com/sun/star/lib/uno/helper/ProxyProvider.java

   1 /*
   2  * This file is part of the LibreOffice project.
   3  *
   4  * This Source Code Form is subject to the terms of the Mozilla Public
   5  * License, v. 2.0. If a copy of the MPL was not distributed with this
   6  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
   7  *
   8  * This file incorporates work covered by the following license notice:
   9  *
  10  *   Licensed to the Apache Software Foundation (ASF) under one or more
  11  *   contributor license agreements. See the NOTICE file distributed
  12  *   with this work for additional information regarding copyright
  13  *   ownership. The ASF licenses this file to you under the Apache
  14  *   License, Version 2.0 (the "License"); you may not use this file
  15  *   except in compliance with the License. You may obtain a copy of
  16  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
  17  */
  18
  19 package com.sun.star.lib.uno.helper;
  20 import com.sun.star.uno.Type;
  21 import com.sun.star.lib.uno.typedesc.TypeDescription;
  22 import com.sun.star.uno.UnoRuntime;
  23 import com.sun.star.lang.XEventListener;
  24 import com.sun.star.uno.IQueryInterface;
  25 import com.sun.star.lib.uno.environments.java.java_environment;
  26
  27
  28 public class ProxyProvider
  29 {
  30     private static java_environment env= new java_environment(null);
  31
  32     /** returns Holder proxy objects for the specified interface. If the method is called
  33      * several times with the same arguments then each time a new HolderProxy is returned.
  34      * Then all HolderProxy s refer to the same Proxy object.
  35      * The proxy can be queried for XEventListener. On the returned proxy disposing can be called
  36      *
  37      */
  38     public static Object createProxy(Object obj, Class iface)
  39     {
  40
  41         Object retVal= null;
  42         if (obj == null || iface == null || !iface.isInstance(obj) )
  43             return retVal;
  44
  45         Type type= new Type(TypeDescription.getTypeDescription(iface));
  46         new Type(TypeDescription.getTypeDescription(com.sun.star.lang.XEventListener.class));
  47         // find the object identifier
  48         String sOid= UnoRuntime.generateOid(obj);
  49         retVal= env.getRegisteredInterface(sOid, type);
  50         // if retVal == null then probably not registered
  51         if (retVal == null)
  52         {
  53             Object aProxy = new Proxy(sOid);
  54             String[] arOid = new String[]
  55             {sOid};
  56             retVal= env.registerInterface(aProxy, arOid, type);
  57         }
  58         return retVal;
  59     }
  60 }
  61
  62 class Proxy implements IQueryInterface, XEventListener
  63 {
  64     private String oid;
  65     Proxy(String oid) {
  66         this.oid = oid;
  67     }
  68
  69     public String getOid() {
  70         return oid;
  71     }
  72
  73     public boolean isSame(Object object) {
  74         if (object instanceof IQueryInterface)
  75         {
  76             IQueryInterface iquery = (IQueryInterface) object;
  77             return iquery.getOid().equals(oid);
  78         }
  79
  80         String oidObj = UnoRuntime.generateOid(object);
  81         return oidObj.equals(oid);
  82     }
  83
  84     public Object queryInterface(Type type) {
  85         return null;
  86     }
  87
  88     public void disposing(com.sun.star.lang.EventObject eventObject) {
  89     }
  90
  91 }
  92
  93
  94
  95