/**************************************************************
 * 
 * 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
 * 
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 * 
 *************************************************************/


package com.sun.star.comp.helper;

import com.sun.star.uno.UnoRuntime;
import com.sun.star.lang.XMultiServiceFactory;
import com.sun.star.lang.XSingleServiceFactory;
import com.sun.star.registry.XRegistryKey;

/**
 * @deprecated use class Bootstrap bootstrapping a native UNO installation
 *             and use the shared library loader service.
 * 
 * The <code>SharedLibraryLoader</code> class provides the functionality of the <code>com.sun.star.loader.SharedLibrary</code>
 * service.
 * <p>
 * @see         "com.sun.star.loader.SharedLibrary"
 * @see         com.sun.star.comp.servicemanager.ServiceManager
 * @see	        "com.sun.star.lang.ServiceManager"
 */
public class SharedLibraryLoader {
	/** 
	 * The default library which contains the SharedLibraryLoader component 
	 */
	public static final String DEFAULT_LIBRARY = "shlibloader.uno";

	/** 
	 * The default implementation name
	 */
	public static final String DEFAULT_IMPLEMENTATION = "com.sun.star.comp.stoc.DLLComponentLoader";
	
	static {
		System.loadLibrary("juh");
	}
		
	private static native boolean component_writeInfo( 
			String libName, XMultiServiceFactory smgr, XRegistryKey regKey,
            ClassLoader loader );
	
	private static native Object component_getFactory( 
			String libName, String implName, XMultiServiceFactory smgr,
            XRegistryKey regKey, ClassLoader loader );

	/**
	 * Supplies the ServiceFactory of the default SharedLibraryLoader.
	 * The defaults are "shlibloader.uno"
	 * for the library and "com.sun.star.comp.stoc.DLLComponentLoader"
	 * for the component name.
	 * <p>
	 * @return	the factory for the "com.sun.star.comp.stoc.DLLComponentLoader" component.
	 * @param	smgr	the ServiceManager
	 * @param	regKey	the root registry key
	 * @see		"com.sun.star.loader.SharedLibrary"
	 * @see		"com.sun.star.lang.ServiceManager"
	 * @see		"com.sun.star.registry.RegistryKey"
	 */
	public static XSingleServiceFactory getServiceFactory(
				XMultiServiceFactory smgr, 
				XRegistryKey regKey )
	{
		return UnoRuntime.queryInterface(
					XSingleServiceFactory.class, 
					component_getFactory(
                        DEFAULT_LIBRARY, DEFAULT_IMPLEMENTATION, smgr, regKey,
                        SharedLibraryLoader.class.getClassLoader() ) );
	}

	/**
	 * Loads and returns a specific factory for a given library and implementation name.
	 * <p>
	 * @return	the factory of the component
	 * @param	libName	the name of the shared library
	 * @param	impName	the implementation name of the component
	 * @param	smgr	the ServiceManager
	 * @param	regKey	the root registry key
	 * @see		"com.sun.star.loader.SharedLibrary"
	 * @see		"com.sun.star.lang.ServiceManager"
	 * @see		"com.sun.star.registry.RegistryKey"
	 */
	public static XSingleServiceFactory getServiceFactory(
				String libName,
				String impName,
				XMultiServiceFactory smgr, 
				XRegistryKey regKey )
	{
		return UnoRuntime.queryInterface(
					XSingleServiceFactory.class, 
					component_getFactory(
                        libName, impName, smgr, regKey,
                        SharedLibraryLoader.class.getClassLoader() ) );
	}
	
	/**
	 * Registers the SharedLibraryLoader under a RegistryKey.
	 * <p>
	 * @return	true if the registration was successfull - otherwise false
	 * @param	smgr	the ServiceManager
	 * @param	regKey	the root key under that the component should be registered
	 * @see		"com.sun.star.loader.SharedLibrary"
	 * @see		"com.sun.star.lang.ServiceManager"
	 * @see		"com.sun.star.registry.RegistryKey"
	 */
	public static boolean writeRegistryServiceInfo(
				com.sun.star.lang.XMultiServiceFactory smgr, 
				com.sun.star.registry.XRegistryKey regKey )
	{
		return component_writeInfo(
            DEFAULT_LIBRARY, smgr, regKey,
            SharedLibraryLoader.class.getClassLoader() );
	}

	/**
	 * Registers the SharedLibraryLoader under a RegistryKey.
	 * <p>
	 * @return	true if the registration was successfull - otherwise false
	 * @param	libName	name of the shared library
	 * @param	smgr	the ServiceManager
	 * @param	regKey	the root key under that the component should be registered
	 * @see		"com.sun.star.loader.SharedLibrary"
	 * @see		"com.sun.star.lang.ServiceManager"
	 * @see		"com.sun.star.registry.RegistryKey"
	 */
	public static boolean writeRegistryServiceInfo(
				String libName,
				com.sun.star.lang.XMultiServiceFactory smgr, 
				com.sun.star.registry.XRegistryKey regKey )
				
			throws 	com.sun.star.registry.InvalidRegistryException, 
					com.sun.star.uno.RuntimeException
	{
		return component_writeInfo(
            libName, smgr, regKey, SharedLibraryLoader.class.getClassLoader() );
	}
}