001: /* ====================================================================
002: * The QueryForm License, Version 1.1
003: *
004: * Copyright (c) 1998 - 2003 David F. Glasser. All rights
005: * reserved.
006: *
007: * Redistribution and use in source and binary forms, with or without
008: * modification, are permitted provided that the following conditions
009: * are met:
010: *
011: * 1. Redistributions of source code must retain the above copyright
012: * notice, this list of conditions and the following disclaimer.
013: *
014: * 2. Redistributions in binary form must reproduce the above copyright
015: * notice, this list of conditions and the following disclaimer in
016: * the documentation and/or other materials provided with the
017: * distribution.
018: *
019: * 3. The end-user documentation included with the redistribution,
020: * if any, must include the following acknowledgment:
021: * "This product includes software developed by
022: * David F. Glasser."
023: * Alternately, this acknowledgment may appear in the software itself,
024: * if and wherever such third-party acknowledgments normally appear.
025: *
026: * 4. The names "QueryForm" and "David F. Glasser" must
027: * not be used to endorse or promote products derived from this
028: * software without prior written permission. For written
029: * permission, please contact dglasser@pobox.com.
030: *
031: * 5. Products derived from this software may not be called "QueryForm",
032: * nor may "QueryForm" appear in their name, without prior written
033: * permission of David F. Glasser.
034: *
035: * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
036: * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
037: * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
038: * DISCLAIMED. IN NO EVENT SHALL DAVID F. GLASSER, THE APACHE SOFTWARE
039: * FOUNDATION OR ITS CONTRIBUTORS, OR ANY AUTHORS OR DISTRIBUTORS
040: * OF THIS SOFTWARE BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
041: * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
042: * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
043: * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
044: * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
045: * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
046: * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
047: * SUCH DAMAGE.
048: * ====================================================================
049: *
050: * This product includes software developed by the
051: * Apache Software Foundation (http://www.apache.org/).
052: *
053: * ====================================================================
054: *
055: * $Source: /cvsroot/qform/qform/src/org/glasser/swing/text/NumericDocument.java,v $
056: * $Revision: 1.1 $
057: * $Author: dglasser $
058: * $Date: 2003/01/26 00:17:34 $
059: *
060: * --------------------------------------------------------------------
061: */
062: package org.glasser.swing.text;
063:
064: import javax.swing.text.*;
065:
066: public class NumericDocument extends ValidatingDocument {
067:
068: protected double minValue = Double.MIN_VALUE;
069:
070: protected double maxValue = Double.MAX_VALUE;
071:
072: protected boolean floatingPointAllowed = false;
073:
074: public void setMinValue(double minValue) {
075: if (minValue > 0)
076: throw new IllegalArgumentException(
077: "setMinValue(): minValue argument must be 0 or less.");
078: this .minValue = minValue;
079: }
080:
081: public void setMaxValue(double maxValue) {
082: if (maxValue < 0)
083: throw new IllegalArgumentException(
084: "setMaxValue(): maxValue argument must be 0 or greater.");
085: this .maxValue = maxValue;
086: }
087:
088: public void setFloatingPointAllowed(boolean floatingPointAllowed) {
089: this .floatingPointAllowed = floatingPointAllowed;
090: }
091:
092: public double getMinValue() {
093: return minValue;
094: }
095:
096: public double getMaxValue() {
097: return maxValue;
098: }
099:
100: public boolean isFloatingPointAllowed() {
101: return floatingPointAllowed;
102: }
103:
104: protected boolean isValidValue(String s) {
105: s = s.trim();
106:
107: // check for the possibility that this is the the
108: // first character of a negative value (the minus sign.)
109: if (s.equals("-") && minValue < 0)
110: return true;
111:
112: try {
113: if (floatingPointAllowed) {
114: double d = Double.parseDouble(s);
115: if (d >= minValue && d <= maxValue) {
116: return true;
117: } else {
118: return false;
119: }
120: } else {
121: long l = Long.parseLong(s);
122: if (l >= minValue && l <= maxValue) {
123: return true;
124: } else {
125: return false;
126: }
127: }
128: } catch (NumberFormatException ex) {
129: return false;
130: }
131: }
132:
133: }
|