/* SystemFlavorMap.java -- Maps between native flavor names and MIME types.
   Copyright (C) 2001 Free Software Foundation, Inc.

This file is part of the non-peer AWT libraries of GNU Classpath.

This library is free software; you can redistribute it and/or modify
it under the terms of the GNU Library General Public License as published 
by the Free Software Foundation, either version 2 of the License, or
(at your option) any later verion.

This library is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU Library General Public License for more details.

You should have received a copy of the GNU Library General Public License
along with this library; if not, write to the Free Software Foundation
Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307 USA. */


package java.awt.datatransfer;

import java.util.HashMap;
import java.util.Map;

/**
  * This class maps between native platform type names and DataFlavors.
  *
  * XXX - The current implementation does no mapping at all.
  *
  * @author Mark Wielaard (mark@klomp.org)
  */
public final class SystemFlavorMap implements FlavorMap
{

/**
  * The default (instance) flavor map.
  */
private static FlavorMap defaultFlavorMap;

/**
  * Private constructor.
  */
private SystemFlavorMap()
{
}

/*************************************************************************/

/**
  * Maps the specified <code>DataFlavor</code> objects to the native
  * data type name.  The returned <code>Map</code> has keys that are
  * the data flavors and values that are strings.  The returned map
  * may be modified.  This can be useful for implementing nested mappings.
  *
  * @param flavors An array of data flavors to map
  *                or null for all data flavors.
  *
  * @return A <code>Map</code> of native data types to data flavors.
  */
public Map
getNativesForFlavors(DataFlavor[] flavors)
{
  return(new HashMap());
}

/*************************************************************************/

/**
  * Maps the specified native type names to <code>DataFlavor</code>'s.
  * The returned <code>Map</code> has keys that are strings and values
  * that are <code>DataFlavor</code>'s.  The returned map may be
  * modified.  This can be useful for implementing nested mappings.
  *
  * @param natives An array of native types to map
  *                or null for all native types.
  *
  * @return A <code>Map</code> of data flavors to native type names.
  */
public Map
getFlavorsForNatives(String[] natives)
{
  return(new HashMap());
}

/*************************************************************************/

/**
  * Returns the default (instance) (System)FlavorMap.
  */
public static FlavorMap
getDefaultFlavorMap()
{
  if (defaultFlavorMap == null)
    defaultFlavorMap = new SystemFlavorMap();

  return(defaultFlavorMap);
}

/*************************************************************************/

/**
  * Returns the native type name for the given java mime type.
  */
public static String
encodeJavaMIMEType(String mime)
{
  return null;
}

/*************************************************************************/

/**
  * Returns the native type name for the given data flavor.
  */
public static String
encodeDataFlavor(DataFlavor df)
{
  return null;
}

/*************************************************************************/

/**
  * Returns true if the native type name can be represented as
  * a java mime type.
  */
public static boolean
isJavaMIMEType(String name)
{
  return(false);
}

/*************************************************************************/

/**
  * Returns the java mime type for the given the native type name.
  */
public static String
decodeJavaMIMEType(String name)
{
  return null;
}

/*************************************************************************/

/**
  * Returns the data flavor given the native type name
  * or null when no such data flavor exists.
  */
public static DataFlavor
decodeDataFlavor(String name) throws ClassNotFoundException
{
  String javaMIMEType = decodeJavaMIMEType(name);
  if (javaMIMEType != null)
    return(new DataFlavor(javaMIMEType));
  else
    return(null);
}

} // class SystemFlavorMap