95 lines
3 KiB
Java
95 lines
3 KiB
Java
/*
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* This file is part of the LibreOffice project.
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*
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* This file incorporates work covered by the following license notice:
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed
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* with this work for additional information regarding copyright
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* ownership. The ASF licenses this file to you under the Apache
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* License, Version 2.0 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.apache.org/licenses/LICENSE-2.0 .
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*/
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package com.sun.star.lib.uno.helper;
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import com.sun.star.uno.Type;
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import com.sun.star.lib.uno.typedesc.TypeDescription;
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import com.sun.star.uno.UnoRuntime;
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import com.sun.star.lang.XEventListener;
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import com.sun.star.uno.IQueryInterface;
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import com.sun.star.lib.uno.environments.java.java_environment;
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public class ProxyProvider
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{
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private static java_environment env= new java_environment(null);
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/** returns Holder proxy objects for the specified interface. If the method is called
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* several times with the same arguments then each time a new HolderProxy is returned.
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* Then all HolderProxy s refer to the same Proxy object.
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* The proxy can be queried for XEventListener. On the returned proxy disposing can be called
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*
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*/
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public static Object createProxy(Object obj, Class iface)
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{
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Object retVal= null;
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if (obj == null || iface == null || !iface.isInstance(obj) )
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return retVal;
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Type type= new Type(TypeDescription.getTypeDescription(iface));
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new Type(TypeDescription.getTypeDescription(com.sun.star.lang.XEventListener.class));
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// find the object identifier
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String sOid= UnoRuntime.generateOid(obj);
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retVal= env.getRegisteredInterface(sOid, type);
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// if retVal == null then probably not registered
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if (retVal == null)
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{
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Object aProxy = new Proxy(sOid);
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String[] arOid = new String[]
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{sOid};
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retVal= env.registerInterface(aProxy, arOid, type);
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}
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return retVal;
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}
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}
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class Proxy implements IQueryInterface, XEventListener
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{
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private String oid;
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Proxy(String oid) {
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this.oid = oid;
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}
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public String getOid() {
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return oid;
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}
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public boolean isSame(Object object) {
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if (object instanceof IQueryInterface)
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{
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IQueryInterface iquery = (IQueryInterface) object;
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return iquery.getOid().equals(oid);
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}
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String oidObj = UnoRuntime.generateOid(object);
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return oidObj.equals(oid);
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}
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public Object queryInterface(Type type) {
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return null;
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}
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public void disposing(com.sun.star.lang.EventObject eventObject) {
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}
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}
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