155 lines
5.7 KiB
Java
155 lines
5.7 KiB
Java
/* -*- Mode: Java; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/*************************************************************************
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*
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* The Contents of this file are made available subject to the terms of
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* the BSD license.
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*
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* Copyright 2000, 2010 Oracle and/or its affiliates.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of Sun Microsystems, Inc. nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
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* TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
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* USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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*************************************************************************/
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import com.sun.star.lang.XSingleComponentFactory;
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import com.sun.star.lang.XServiceInfo;
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import com.sun.star.lang.XInitialization;
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import com.sun.star.beans.XPropertySet;
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import com.sun.star.uno.XComponentContext;
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import com.sun.star.uno.XInterface;
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import com.sun.star.uno.UnoRuntime;
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import java.lang.reflect.Constructor;
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// purpose of this class is to provide a service factory that instantiates
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// the services only once (as long as this factory itself exists)
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// and returns only reference to that instance.
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public class OneInstanceFactory implements
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XSingleComponentFactory,
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XServiceInfo
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{
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private final Class aMyClass;
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private final String aSvcImplName;
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private final String[] aSupportedSvcNames;
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private XInterface xInstantiatedService;
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public OneInstanceFactory(
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Class aMyClass,
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String aSvcImplName,
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String[] aSupportedSvcNames )
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{
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this.aMyClass = aMyClass;
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this.aSvcImplName = aSvcImplName;
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this.aSupportedSvcNames = aSupportedSvcNames;
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xInstantiatedService = null;
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}
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// XSingleComponentFactory
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public Object createInstanceWithContext( XComponentContext context )
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throws com.sun.star.uno.Exception,
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com.sun.star.uno.RuntimeException
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{
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if (xInstantiatedService == null)
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{
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//!! the here used services all have exact one constructor!!
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Constructor [] aCtor = aMyClass.getConstructors();
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try {
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xInstantiatedService = (XInterface) aCtor[0].newInstance( (Object[])null );
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}
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catch( Exception e ) {
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}
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//!! workaround for services not always being created
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//!! via 'createInstanceWithArguments'
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XInitialization xIni = UnoRuntime.queryInterface(
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XInitialization.class, createInstanceWithContext(context));
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if (xIni != null)
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{
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Object[] aArguments = new Object[]{ null, null };
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if (context != null)
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{
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XPropertySet xPropSet = UnoRuntime.queryInterface(
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XPropertySet.class,
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context.getServiceManager().createInstanceWithContext(
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"com.sun.star.linguistic2.LinguProperties",
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context ) );
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aArguments[0] = xPropSet;
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}
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xIni.initialize( aArguments );
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}
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}
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return xInstantiatedService;
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}
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public Object createInstanceWithArgumentsAndContext( Object[] aArguments, XComponentContext context )
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throws com.sun.star.uno.Exception,
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com.sun.star.uno.RuntimeException
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{
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if (xInstantiatedService == null)
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{
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XInitialization xIni = UnoRuntime.queryInterface(
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XInitialization.class, createInstanceWithContext( context ));
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if (xIni != null)
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xIni.initialize( aArguments );
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}
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return xInstantiatedService;
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}
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// XServiceInfo
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public boolean supportsService( String aServiceName )
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throws com.sun.star.uno.RuntimeException
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{
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boolean bFound = false;
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int nCnt = aSupportedSvcNames.length;
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for (int i = 0; i < nCnt && !bFound; ++i)
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{
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if (aServiceName.equals( aSupportedSvcNames[i] ))
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bFound = true;
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}
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return bFound;
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}
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public String getImplementationName()
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throws com.sun.star.uno.RuntimeException
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{
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return aSvcImplName;
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}
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public String[] getSupportedServiceNames()
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throws com.sun.star.uno.RuntimeException
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{
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return aSupportedSvcNames;
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}
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}
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/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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