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 * 
 * 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
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package integration.extensions;

import com.sun.star.uno.XComponentContext;
import com.sun.star.lang.XSingleComponentFactory;
import java.lang.reflect.Constructor;

/**
 *
 * @author fs93730
 */
public class ComponentFactory implements XSingleComponentFactory
{
    private Class       m_handlerClass;
    private Constructor m_defaultConstructor;
    private Constructor m_initConstructor;

    public ComponentFactory( Class _handlerClass )
    {
        m_handlerClass = _handlerClass;

        Class objectArrayClass = null;
        try
        {
            objectArrayClass = Class.forName("[Ljava.lang.Object;");
        }
        catch ( java.lang.ClassNotFoundException e ) { }

        Constructor ctors[] = _handlerClass.getConstructors();
        for ( int i = 0; i < ctors.length && ctors != null; ++i)
        {
            Class ctorParams[] = ctors[i].getParameterTypes();
            if ( ( ctorParams.length == 1 ) && ( ctorParams[0].equals( XComponentContext.class ) ) )
                m_defaultConstructor = ctors[i];
            if  (   ( ctorParams.length == 2 )
                &&  ( ctorParams[0].equals( XComponentContext.class ) )
                &&  ( ctorParams[1].equals( objectArrayClass ) )
                )
                m_initConstructor = ctors[i];
        }
        if ( m_defaultConstructor == null )
            throw new java.lang.IllegalArgumentException();
    }

    private Object ipml_createInstance( Constructor _ctor, Object[] _arguments )
    {
        Object newInstance = null;
        try
        {
            newInstance = _ctor.newInstance( _arguments );
        }
        catch( InstantiationException e )
        {
            System.err.println( "InstantiationException: Could not instantiate an instance of " + m_handlerClass.getName() );
        }
        catch( IllegalAccessException e )
        {
            System.err.println( "IllegalAccessException: Could not instantiate an instance of " + m_handlerClass.getName() );
        }
        catch( java.lang.reflect.InvocationTargetException e )
        {
            System.err.println( "InvocationTargetException: Could not instantiate an instance of " + m_handlerClass.getName() );
        }
        return newInstance;
    }

    public Object createInstanceWithArgumentsAndContext(Object[] _arguments, XComponentContext _componentContext) throws com.sun.star.uno.Exception
    {
        if ( m_initConstructor != null )
            return ipml_createInstance( m_initConstructor, new Object[] { _componentContext, _arguments } );
        else
            return createInstanceWithContext( _componentContext );
    }

    public Object createInstanceWithContext(XComponentContext _componentContext) throws com.sun.star.uno.Exception
    {
        return ipml_createInstance( m_defaultConstructor, new Object[] { _componentContext } );
    }
}