1 /***
2 * Redistribution and use in source and binary forms, with or without
3 * modification, are permitted provided that the following conditions are
4 * met :
5 *
6 * . Redistributions of source code must retain the above copyright
7 * notice, this list of conditions and the following disclaimer.
8 *
9 * . Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 *
13 * . The name of the author may not be used to endorse or promote products
14 * derived from this software without specific prior written permission.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
18 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
19 * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
20 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
21 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
22 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
24 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
25 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
26 * POSSIBILITY OF SUCH DAMAGE.
27 *
28 * $Id$
29 */
30
31 package palmed.edit.selection;
32
33 import java.io.IOException;
34 import java.io.InputStream;
35 import palmed.util.ChainedException;
36
37 /***
38 * This class implements an action to paste text replacing the current selection.
39 *
40 * @author Mathieu Champlon
41 * @version $Revision$ $Date$
42 */
43 public final class Paste extends AbstractAction
44 {
45 /***
46 * The selection.
47 */
48 private final ISelection selection_;
49 /***
50 * The stream.
51 */
52 private final InputStream stream_;
53
54 /***
55 * Create a paste action.
56 *
57 * @param selection the selection
58 * @param stream the stream
59 */
60 public Paste( final ISelection selection, final InputStream stream )
61 {
62 super( selection );
63 selection_ = selection;
64 stream_ = stream;
65 }
66
67 /***
68 * {@inheritDoc}
69 */
70 protected void onPerform()
71 {
72 backupData();
73 try
74 {
75 selection_.paste( stream_ );
76 }
77 catch( IOException e )
78 {
79 throw new ChainedException( e );
80 }
81 }
82
83 /***
84 * {@inheritDoc}
85 */
86 protected boolean onUndo()
87 {
88 restoreData();
89 return true;
90 }
91
92 /***
93 * {@inheritDoc}
94 */
95 protected boolean onRedo()
96 {
97 try
98 {
99 stream_.reset();
100 selection_.paste( stream_ );
101 return true;
102 }
103 catch( IOException e )
104 {
105 throw new ChainedException( e );
106 }
107 }
108
109 /***
110 * {@inheritDoc}
111 */
112 public boolean merge( final IAction action )
113 {
114 return false;
115 }
116 }