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+/* ObjectDataContentHandler.java -- Data content handler using an object.
+ Copyright (C) 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 javax.activation;
+
+import java.awt.datatransfer.DataFlavor;
+import java.awt.datatransfer.UnsupportedFlavorException;
+import java.io.IOException;
+import java.io.OutputStream;
+
+/**
+ * Data content handler that uses an existing DCH and reified object.
+ *
+ * @author <a href='mailto:dog@gnu.org'>Chris Burdess</a>
+ * @version 1.1
+ */
+class ObjectDataContentHandler
+ implements DataContentHandler
+{
+
+ private DataContentHandler dch;
+ private Object object;
+ private String mimeType;
+ private DataFlavor[] flavors;
+
+ public ObjectDataContentHandler(DataContentHandler dch, Object object,
+ String mimeType)
+ {
+ this.dch = dch;
+ this.object = object;
+ this.mimeType = mimeType;
+ }
+
+ public Object getContent(DataSource ds)
+ {
+ return object;
+ }
+
+ public DataContentHandler getDCH()
+ {
+ return dch;
+ }
+
+ public Object getTransferData(DataFlavor flavor, DataSource ds)
+ throws UnsupportedFlavorException, IOException
+ {
+ if (dch != null)
+ {
+ return dch.getTransferData(flavor, ds);
+ }
+ if (flavors == null)
+ {
+ getTransferDataFlavors();
+ }
+ if (flavor.equals(flavors[0]))
+ {
+ return object;
+ }
+ throw new UnsupportedFlavorException(flavor);
+ }
+
+ public DataFlavor[] getTransferDataFlavors()
+ {
+ if (flavors == null)
+ {
+ if (dch != null)
+ {
+ flavors = dch.getTransferDataFlavors();
+ }
+ else
+ {
+ flavors = new DataFlavor[1];
+ flavors[0] = new ActivationDataFlavor(object.getClass(),
+ mimeType, mimeType);
+ }
+ }
+ return flavors;
+ }
+
+ public void writeTo(Object object, String mimeType, OutputStream out)
+ throws IOException
+ {
+ if (dch != null)
+ {
+ dch.writeTo(object, mimeType, out);
+ }
+ else
+ {
+ throw new UnsupportedDataTypeException("no object DCH for MIME type " + mimeType);
+ }
+ }
+
+}