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 palmed.edit.text.IText;
34 import palmed.edit.util.Coordinate;
35
36 /***
37 * This class implements an action to replace the selection with a character.
38 *
39 * @author Mathieu Champlon
40 * @version $Revision$ $Date$
41 */
42 public final class SelectionReplacement extends AbstractAction
43 {
44 /***
45 * The selection.
46 */
47 private final ISelection selection_;
48 /***
49 * The text.
50 */
51 private final IText text_;
52 /***
53 * The insertion position.
54 */
55 private final Coordinate insertion_;
56 /***
57 * The character to insert.
58 */
59 private final char value_;
60
61 /***
62 * Create a type action.
63 *
64 * @param selection the selection
65 * @param text the text
66 * @param value the character to insert
67 * @param insertion the insertion position
68 */
69 public SelectionReplacement( final ISelection selection, final IText text, final char value,
70 final Coordinate insertion )
71 {
72 super( selection );
73 selection_ = selection;
74 text_ = text;
75 value_ = value;
76 insertion_ = insertion;
77 }
78
79 /***
80 * {@inheritDoc}
81 */
82 protected void onPerform()
83 {
84 backupData();
85 selection_.delete();
86 text_.insert( insertion_, value_ );
87 selection_.forward();
88 selection_.clear();
89 }
90
91 /***
92 * {@inheritDoc}
93 */
94 protected boolean onUndo()
95 {
96 selection_.backward();
97 restoreData();
98 return true;
99 }
100
101 /***
102 * {@inheritDoc}
103 */
104 protected boolean onRedo()
105 {
106 selection_.delete();
107 text_.insert( insertion_, value_ );
108 selection_.forward();
109 return false;
110 }
111
112 /***
113 * {@inheritDoc}
114 */
115 public boolean merge( final IAction action )
116 {
117 return false;
118 }
119 }