001    /* ActivationDataFlavor.java -- Activation-specific DataFlavor instance.
002       Copyright (C) 2004 Free Software Foundation, Inc.
003    
004    This file is part of GNU Classpath.
005    
006    GNU Classpath is free software; you can redistribute it and/or modify
007    it under the terms of the GNU General Public License as published by
008    the Free Software Foundation; either version 2, or (at your option)
009    any later version.
010    
011    GNU Classpath is distributed in the hope that it will be useful, but
012    WITHOUT ANY WARRANTY; without even the implied warranty of
013    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
014    General Public License for more details.
015    
016    You should have received a copy of the GNU General Public License
017    along with GNU Classpath; see the file COPYING.  If not, write to the
018    Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
019    02110-1301 USA.
020    
021    Linking this library statically or dynamically with other modules is
022    making a combined work based on this library.  Thus, the terms and
023    conditions of the GNU General Public License cover the whole
024    combination.
025    
026    As a special exception, the copyright holders of this library give you
027    permission to link this library with independent modules to produce an
028    executable, regardless of the license terms of these independent
029    modules, and to copy and distribute the resulting executable under
030    terms of your choice, provided that you also meet, for each linked
031    independent module, the terms and conditions of the license of that
032    module.  An independent module is a module which is not derived from
033    or based on this library.  If you modify this library, you may extend
034    this exception to your version of the library, but you are not
035    obligated to do so.  If you do not wish to do so, delete this
036    exception statement from your version. */
037    
038    package javax.activation;
039    
040    import gnu.java.lang.CPStringBuilder;
041    
042    import java.awt.datatransfer.DataFlavor;
043    import java.io.InputStream;
044    
045    /**
046     * Activation-specific DataFlavor with improved MIME parsing.
047     *
048     * @author <a href='mailto:dog@gnu.org'>Chris Burdess</a>
049     * @version 1.0.2
050     */
051    public class ActivationDataFlavor extends DataFlavor
052    {
053    
054        private final String mimeType;
055        private final Class<?> representationClass;
056        private String humanPresentableName;
057    
058        /**
059         * Constructor.
060         * @param representationClass the representation class
061         * @param mimeType the MIME type of the data
062         * @param humanPresentableName the human-presentable name of the data
063         * flavor
064         */
065      // Raw types enforced as part of spec.
066      @SuppressWarnings("unchecked")
067        public ActivationDataFlavor(Class representationClass, String mimeType,
068                String humanPresentableName)
069        {
070            super(mimeType, humanPresentableName);
071            this.mimeType = mimeType;
072            this.humanPresentableName = humanPresentableName;
073            this.representationClass = representationClass;
074        }
075    
076        /**
077         * Constructor.
078         * @param representationClass the representation class
079         * @param humanPresentableName the human-presentable name of the data
080         * flavor
081         */
082      // Raw types enforced as part of spec.
083      @SuppressWarnings("unchecked")
084        public ActivationDataFlavor(Class representationClass,
085                String humanPresentableName)
086        {
087            super(representationClass, humanPresentableName);
088            mimeType = super.getMimeType();
089            this.representationClass = representationClass;
090            this.humanPresentableName = humanPresentableName;
091        }
092    
093        /**
094         * Constructor. The representation class is an InputStream.
095         * @param mimeType the MIME type of the data
096         * @param humanPresentableName the human-presentable name of the data
097         * flavor
098         */
099        public ActivationDataFlavor(String mimeType, String humanPresentableName)
100        {
101            super(mimeType, humanPresentableName);
102            this.mimeType = mimeType;
103            this.humanPresentableName = humanPresentableName;
104            representationClass = InputStream.class;
105        }
106    
107        public String getMimeType()
108        {
109            return mimeType;
110        }
111    
112      // Raw types enforced as part of spec.
113      @SuppressWarnings("unchecked")
114        public Class getRepresentationClass()
115        {
116            return representationClass;
117        }
118    
119        public String getHumanPresentableName()
120        {
121            return humanPresentableName;
122        }
123    
124        public void setHumanPresentableName(String humanPresentableName)
125        {
126            this.humanPresentableName = humanPresentableName;
127        }
128    
129        public boolean equals(DataFlavor dataFlavor)
130        {
131            return (isMimeTypeEqual(dataFlavor) &&
132                    dataFlavor.getRepresentationClass() == representationClass);
133        }
134    
135        public boolean isMimeTypeEqual(String mimeType)
136        {
137            try
138            {
139                return new MimeType(this.mimeType).match(new MimeType(mimeType));
140            }
141            catch (MimeTypeParseException e)
142            {
143                return false;
144            }
145        }
146    
147        protected String normalizeMimeTypeParameter(String parameterName,
148                String parameterValue)
149        {
150            return new CPStringBuilder(parameterName)
151                .append('=')
152                .append(parameterValue)
153                .toString();
154        }
155    
156        protected String normalizeMimeType(String mimeType)
157        {
158            return mimeType;
159        }
160    
161    }