/*
** Luxor - XML User Interface Language (XUL) Toolkit
** Copyright (c) 2001, 2002 by Gerald Bauer
**
** This program is free software.
**
** You may redistribute it and/or modify it under the terms of the GNU
** General Public License as published by the Free Software Foundation.
** Version 2 of the license should be included with this distribution in
** the file LICENSE, as well as License.html. If the license is not
** included with this distribution, you may find a copy at the FSF web
** site at 'www.gnu.org' or 'www.fsf.org', or you may write to the
** Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139 USA.
**
** THIS SOFTWARE IS PROVIDED AS-IS WITHOUT WARRANTY OF ANY KIND,
** NOT EVEN THE IMPLIED WARRANTY OF MERCHANTABILITY. THE AUTHOR
** OF THIS SOFTWARE, ASSUMES _NO_ RESPONSIBILITY FOR ANY
** CONSEQUENCE RESULTING FROM THE USE, MODIFICATION, OR
** REDISTRIBUTION OF THIS SOFTWARE.
**
*/

package luxor.browser;

import java.io.*;
import java.net.*;
import luxor.spi.*;
import luxor.status.*;

public class ExternalBrowser
{

   private static ExternalBrowser _instance;
   private BrowserService _service;

   private ExternalBrowser()
   {
      // check if we are running under webstart
      try
      {
         Class clazz = Class.forName( "javax.jnlp.ServiceManager" );

         /*
          *  / just to make sure
          *  / check for some properties
          *  String jnlpxHeapsize = System.getProperty( "jnlpx.heapsize" );
          *  String jnlpxHome = System.getProperty( "jnlpx.home" );
          *  String jnlpxJvm = System.getProperty( "jnlpx.jvm" );
          *  if(    jnlpxHeapsize != null
          *  && jnlpxHome != null
          *  && jnlpxJvm != null )
          *  {
          *  _service = new JnlpBrowserService();
          *  }
          */
         _service = new JnlpBrowserService( new SpencerBrowserService() );
      }
      catch( ClassNotFoundException ex )
      {
         _service = new SpencerBrowserService();
      }
   }

   private BrowserService getService()
   {
      return _service;
   }

   public static void showDocument( URL url )
   {
      if( url == null )
         return;

      instance().getService().showDocument( url );
   }

   public static void showDocument( String url )
   {
      try
      {
         showDocument( new URL( url ) );
      }
      catch( MalformedURLException mex )
      {
         Status.error( "*** invalid URL " + url + ": " + mex.toString() );
      }
   }

   private static ExternalBrowser instance()
   {
      if( _instance == null )
         _instance = new ExternalBrowser();

      return _instance;
   }

}