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/* StringSelection.java -- Clipboard handler for text.

   Copyright (C) 1999, 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.io.IOException;

import java.io.StringReader;

/**

  * This class transfers a string as plain text using the clipboard.

  *

  * @author Aaron M. Renn (arenn@urbanophile.com)

  */

public class StringSelection implements Transferable, ClipboardOwner

{

/*

 * Class Variables

 */

// List of flavors we support

// XXX: DataFlavor.plainTextFlavor is deprecated.

static final DataFlavor[] supported_flavors

   = { DataFlavor.stringFlavor,

       DataFlavor.plainTextFlavor };

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

/*

 * Instance Variables

 */

// This is the data to transfer

private String data;

  /**

   * Transfer the specfied string as text.

   *

   * @param data the data for the string selection

   */

  public StringSelection(String data)

  {

    this.data = data;

  }

/**

  * Returns a list of supported data flavors.

  *

  * @return A list of supported data flavors.

  */

public DataFlavor[]

getTransferDataFlavors()

{

  return(supported_flavors);

}

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

/**

  * Tests whether or not the specified data flavor is supported.

  *

  * @param flavor The data flavor to test.

  *

  * @return <code>true</code> if the data flavor is supported,

  * <code>false</code> otherwise.

  */

public boolean

isDataFlavorSupported(DataFlavor flavor)

{

  for (int i = 0; i < supported_flavors.length; i++)

    if (supported_flavors[i].equals(flavor))

       return(true);

  return(false);

}

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

/**

  * This method returns the data in the requested format.

  *

  * @param flavor The desired data flavor.

  *

  * @return The transferred data.

  *

  * @exception UnsupportedFlavorException If the specified flavor is not

  * supported.

  * @exception IOException If any other error occurs.

  */

public Object

getTransferData(DataFlavor flavor) throws UnsupportedFlavorException,

                                          IOException

{

  if (!isDataFlavorSupported(flavor))

    throw new UnsupportedFlavorException(flavor);

  if (DataFlavor.plainTextFlavor == flavor)

      /* The behavior of this method for DataFlavor.plainTextFlavor and

         equivalent DataFlavors is inconsistent with the definition of

         DataFlavor.plainTextFlavor. We choose to do like Sun's implementation

         and return a Reader instead of an InputString. */

      /* return(new StringBufferInputStream(data)); */

      return(new StringReader(data));

  else // DataFlavor.stringFlavor

      return data;

}

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

/**

  * Called when ownership of the clipboard object is lost.

  *

  * @param clipboard The affected clipboard.

  * @param contents The clipboard contents.

  */

public void

lostOwnership(Clipboard clipboard, Transferable contents)

{

  // FIXME: What does this do?

}

} // class StringSelection