01: /*
02: * <copyright>
03: *
04: * Copyright 1997-2004 BBNT Solutions, LLC
05: * under sponsorship of the Defense Advanced Research Projects
06: * Agency (DARPA).
07: *
08: * You can redistribute this software and/or modify it under the
09: * terms of the Cougaar Open Source License as published on the
10: * Cougaar Open Source Website (www.cougaar.org).
11: *
12: * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
13: * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
14: * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
15: * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
16: * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
17: * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
18: * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
19: * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
20: * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
21: * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
22: * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
23: *
24: * </copyright>
25: */
26:
27: package org.cougaar.util;
28:
29: import javax.swing.text.AttributeSet;
30: import javax.swing.text.BadLocationException;
31: import javax.swing.text.PlainDocument;
32:
33: public class NumericDocument extends PlainDocument {
34: /**
35: * Default constructor creates a NumericDocument holding a zero value.
36: **/
37: public NumericDocument() {
38: try {
39: insertString(0, "0", null);
40: } catch (BadLocationException e) {
41: }
42: }
43:
44: /**
45: * Insert a string into the document. The string is checked to
46: * insure that all characters are digits.
47: * @param offset the location in the document where insertion is to occur.
48: * @param s the string to insert -- all characters must be decimal digits.
49: * @param attrs the set of attributes fo the inserted characters.
50: **/
51: public void insertString(int offset, String s, AttributeSet attrs)
52: throws BadLocationException {
53: for (int i = 0, n = s.length(); i < n; i++) {
54: char c = s.charAt(i);
55: if (c < '0' || c > '9') {
56: throw new IllegalArgumentException("not a digit");
57: }
58: }
59: super .insertString(offset, s, attrs);
60: }
61:
62: /**
63: * Replace the current value in the document with a new value.
64: * @param value the new value to insert.
65: **/
66: public void setValue(int value) {
67: try {
68: remove(0, getLength());
69: insertString(0, Integer.toString(value), null);
70: } catch (BadLocationException e) {
71: }
72: }
73:
74: /**
75: * Get the current value in the document. Converts the string in
76: * the document to a number.
77: * @return the value in the buffer as an int.
78: **/
79: public int getValue() {
80: try {
81: String text = getText(0, getLength());
82: return Integer.parseInt(text);
83: } catch (BadLocationException e) {
84: return 0;
85: }
86: }
87: }
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