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/* SystemFlavorMap.java -- Maps between native flavor names and MIME types.

   Copyright (C) 2001, 2004  Free Software Foundation, Inc.

This file is part of GNU Classpath.

GNU Classpath is free software; you can redistribute it and/or modify

it under the terms of the GNU General Public License as published by

the Free Software Foundation; either version 2, or (at your option)

any later version.

GNU Classpath 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

General Public License for more details.

You should have received a copy of the GNU General Public License

along with GNU Classpath; see the file COPYING.  If not, write to the

Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA

02110-1301 USA.

Linking this library statically or dynamically with other modules is

making a combined work based on this library.  Thus, the terms and

conditions of the GNU General Public License cover the whole

combination.

As a special exception, the copyright holders of this library give you

permission to link this library with independent modules to produce an

executable, regardless of the license terms of these independent

modules, and to copy and distribute the resulting executable under

terms of your choice, provided that you also meet, for each linked

independent module, the terms and conditions of the license of that

module.  An independent module is a module which is not derived from

or based on this library.  If you modify this library, you may extend

this exception to your version of the library, but you are not

obligated to do so.  If you do not wish to do so, delete this

exception statement from your version. */

package java.awt.datatransfer;

import java.util.HashMap;

import java.util.List;

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)

  *

  * @since 1.2

  */

public final class SystemFlavorMap implements FlavorMap, FlavorTable

{

  /**

   * 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;

  }

  public List getFlavorsForNative (String nat)

  {

    throw new Error ("Not implemented");

  }

  public List getNativesForFlavor (DataFlavor flav)

  {

    throw new Error ("Not implemented");

  }

} // class SystemFlavorMap