diff options
Diffstat (limited to 'libjava/classpath/javax/activation/ObjectDataContentHandler.java')
-rw-r--r-- | libjava/classpath/javax/activation/ObjectDataContentHandler.java | 128 |
1 files changed, 128 insertions, 0 deletions
diff --git a/libjava/classpath/javax/activation/ObjectDataContentHandler.java b/libjava/classpath/javax/activation/ObjectDataContentHandler.java new file mode 100644 index 00000000000..5105cb45b2c --- /dev/null +++ b/libjava/classpath/javax/activation/ObjectDataContentHandler.java @@ -0,0 +1,128 @@ +/* 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); + } + } + +} + |