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.command;
32
33 import java.io.ByteArrayInputStream;
34 import java.io.ByteArrayOutputStream;
35 import java.io.IOException;
36 import palmed.edit.ITextBox;
37
38 /***
39 * This class manages copy/paste operations.
40 *
41 * @author Mathieu Champlon
42 * @version $Revision$ $Date$
43 */
44 public final class CopyPasteManager
45 {
46 /***
47 * The text box.
48 */
49 private final ITextBox textBox_;
50 /***
51 * The buffer.
52 */
53 private byte[] buffer_;
54
55 /***
56 * Create a copy/paste controller.
57 *
58 * @param textBox the text box
59 */
60 public CopyPasteManager( final ITextBox textBox )
61 {
62 if( textBox == null )
63 throw new IllegalArgumentException( "argument 'textBox' is null" );
64 textBox_ = textBox;
65 }
66
67 /***
68 * Copy the current selected text.
69 *
70 * @throws IOException an io exception occurs
71 */
72 public void copy() throws IOException
73 {
74 final ByteArrayOutputStream stream = new ByteArrayOutputStream();
75 textBox_.copy( stream );
76 buffer_ = stream.toByteArray();
77 }
78
79 /***
80 * Cut the current selected text.
81 *
82 * @throws IOException an io exception occurs
83 */
84 public void cut() throws IOException
85 {
86 final ByteArrayOutputStream stream = new ByteArrayOutputStream();
87 textBox_.cut( stream );
88 buffer_ = stream.toByteArray();
89 }
90
91 /***
92 * Paste the text previously copied or cut.
93 *
94 * @throws IOException an io exception occurs
95 */
96 public void paste() throws IOException
97 {
98 if( buffer_ != null )
99 textBox_.paste( new ByteArrayInputStream( buffer_ ) );
100 }
101 }