1 /* ProgressMonitorInputStream.java --
2 Copyright (C) 2002, 2004, 2005 Free Software Foundation, Inc.
4 This file is part of GNU Classpath.
6 GNU Classpath is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2, or (at your option)
11 GNU Classpath is distributed in the hope that it will be useful, but
12 WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with GNU Classpath; see the file COPYING. If not, write to the
18 Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
21 Linking this library statically or dynamically with other modules is
22 making a combined work based on this library. Thus, the terms and
23 conditions of the GNU General Public License cover the whole
26 As a special exception, the copyright holders of this library give you
27 permission to link this library with independent modules to produce an
28 executable, regardless of the license terms of these independent
29 modules, and to copy and distribute the resulting executable under
30 terms of your choice, provided that you also meet, for each linked
31 independent module, the terms and conditions of the license of that
32 module. An independent module is a module which is not derived from
33 or based on this library. If you modify this library, you may extend
34 this exception to your version of the library, but you are not
35 obligated to do so. If you do not wish to do so, delete this
36 exception statement from your version. */
41 import java
.awt
.Component
;
43 import java
.io
.FilterInputStream
;
44 import java
.io
.InputStream
;
45 import java
.io
.InterruptedIOException
;
46 import java
.io
.IOException
;
49 * ProgressMonitorInputStream
50 * @author Andrew Selkirk
51 * @author Robert Schuster (robertschuster@fsfe.org)
52 * @status updated to 1.2
55 public class ProgressMonitorInputStream
extends FilterInputStream
61 private ProgressMonitor monitor
;
69 * Constructor ProgressMonitorInputStream
70 * @param component TODO
74 public ProgressMonitorInputStream(Component component
, Object message
,
83 max
= stream
.available();
85 catch ( IOException ioe
)
87 // Behave like the JDK here.
90 monitor
= new ProgressMonitor(
91 component
, message
, null, 0, max
);
96 * @exception IOException TODO
98 public void reset() throws IOException
102 checkMonitorCanceled();
104 // TODO: The docs says the monitor should be resetted. But to which
105 // value? (mark is not overridden)
110 * @exception IOException TODO
113 public int read() throws IOException
115 int t
= super.read();
117 monitor
.setProgress(++read
);
119 checkMonitorCanceled();
127 * @exception IOException TODO
130 public int read(byte[] data
) throws IOException
132 int t
= super.read(data
);
137 monitor
.setProgress(read
);
139 checkMonitorCanceled();
154 * @exception IOException TODO
157 public int read(byte[] data
, int offset
, int length
) throws IOException
159 int t
= super.read(data
, offset
, length
);
164 monitor
.setProgress(read
);
166 checkMonitorCanceled();
179 * @exception IOException TODO
182 public long skip(long length
) throws IOException
184 long t
= super.skip(length
);
186 // 'read' may overflow here in rare situations.
187 assert ( (long) read
+ t
<= (long) Integer
.MAX_VALUE
);
191 monitor
.setProgress(read
);
193 checkMonitorCanceled();
200 * @exception IOException TODO
202 public void close() throws IOException
210 * @returns ProgressMonitor
212 public ProgressMonitor
getProgressMonitor()
217 private void checkMonitorCanceled() throws InterruptedIOException
219 if ( monitor
.isCanceled() )
221 throw new InterruptedIOException("ProgressMonitor was canceled");