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128 lines
3.7 KiB
Java
128 lines
3.7 KiB
Java
/* ObjectDataContentHandler.java -- Data content handler using an object.
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Copyright (C) 2004 Free Software Foundation, Inc.
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This file is part of GNU Classpath.
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GNU Classpath is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GNU Classpath is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GNU Classpath; see the file COPYING. If not, write to the
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Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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02110-1301 USA.
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Linking this library statically or dynamically with other modules is
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making a combined work based on this library. Thus, the terms and
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conditions of the GNU General Public License cover the whole
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combination.
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As a special exception, the copyright holders of this library give you
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permission to link this library with independent modules to produce an
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executable, regardless of the license terms of these independent
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modules, and to copy and distribute the resulting executable under
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terms of your choice, provided that you also meet, for each linked
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independent module, the terms and conditions of the license of that
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module. An independent module is a module which is not derived from
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or based on this library. If you modify this library, you may extend
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this exception to your version of the library, but you are not
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obligated to do so. If you do not wish to do so, delete this
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exception statement from your version. */
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package javax.activation;
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import java.awt.datatransfer.DataFlavor;
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import java.awt.datatransfer.UnsupportedFlavorException;
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import java.io.IOException;
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import java.io.OutputStream;
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/**
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* Data content handler that uses an existing DCH and reified object.
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*
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* @author <a href='mailto:dog@gnu.org'>Chris Burdess</a>
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* @version 1.1
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*/
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class ObjectDataContentHandler
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implements DataContentHandler
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{
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private DataContentHandler dch;
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private Object object;
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private String mimeType;
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private DataFlavor[] flavors;
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public ObjectDataContentHandler(DataContentHandler dch, Object object,
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String mimeType)
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{
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this.dch = dch;
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this.object = object;
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this.mimeType = mimeType;
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}
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public Object getContent(DataSource ds)
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{
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return object;
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}
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public DataContentHandler getDCH()
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{
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return dch;
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}
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public Object getTransferData(DataFlavor flavor, DataSource ds)
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throws UnsupportedFlavorException, IOException
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{
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if (dch != null)
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{
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return dch.getTransferData(flavor, ds);
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}
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if (flavors == null)
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{
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getTransferDataFlavors();
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}
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if (flavor.equals(flavors[0]))
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{
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return object;
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}
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throw new UnsupportedFlavorException(flavor);
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}
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public DataFlavor[] getTransferDataFlavors()
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{
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if (flavors == null)
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{
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if (dch != null)
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{
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flavors = dch.getTransferDataFlavors();
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}
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else
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{
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flavors = new DataFlavor[1];
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flavors[0] = new ActivationDataFlavor(object.getClass(),
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mimeType, mimeType);
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}
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}
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return flavors;
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}
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public void writeTo(Object object, String mimeType, OutputStream out)
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throws IOException
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{
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if (dch != null)
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{
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dch.writeTo(object, mimeType, out);
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}
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else
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{
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throw new UnsupportedDataTypeException("no object DCH for MIME type " + mimeType);
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}
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}
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}
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