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