001: /*
002: * Copyright 2004 Jonathan M. Lehr
003: *
004: * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License.
005: * You may obtain a copy of the License at
006: *
007: * http://www.apache.org/licenses/LICENSE-2.0
008: *
009: * Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS"
010: * BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language
011: * governing permissions and limitations under the License.
012: *
013: * MODIFIED BY THE KUALI FOUNDATION
014: */
015: // begin Kuali Foundation modification
016: package org.kuali.core.web.format;
017:
018: // end Kuali Foundation modification
019:
020: // begin Kuali Foundation modification
021: import java.math.BigDecimal;
022: import java.text.DecimalFormat;
023: import java.text.NumberFormat;
024: import java.text.ParseException;
025:
026: import org.kuali.RiceKeyConstants;
027: import org.kuali.core.util.KualiPercent;
028:
029: /**
030: * begin Kuali Foundation modification
031: * This class is used to format objects as a percent.
032: * end Kuali Foundation modification
033: */
034: public class PercentageFormatter extends Formatter {
035: // begin Kuali Foundation modification
036: private static final long serialVersionUID = 1323889942436009589L;
037: // end Kuali Foundation modification
038:
039: /**
040: * The default scale for percentage values
041: */
042: public final static int PERCENTAGE_SCALE = 2;
043:
044: /**
045: * The default format for percentage values
046: */
047: public final static String PERCENTAGE_FORMAT = "#,##0.00";
048:
049: // begin Kuali Foundation modification
050: // removed PARSE_MSG
051: // end Kuali Foundation modification
052:
053: /**
054: * Unformats its argument and returns a BigDecimal instance initialized with the resulting string value
055: *
056: * @return a BigDecimal initialized with the provided string
057: */
058: protected Object convertToObject(String target) {
059: // begin Kuali Foundation modification
060: // using KualiPercent instead of BigDecimal, and exception msg changes
061: try {
062: DecimalFormat formatter = new DecimalFormat(
063: PERCENTAGE_FORMAT);
064: Number parsedNumber = formatter.parse(target.trim());
065: return new KualiPercent(parsedNumber.doubleValue());
066: } catch (NumberFormatException e) {
067: throw new FormatException("parsing",
068: RiceKeyConstants.ERROR_PERCENTAGE, target, e);
069: } catch (ParseException e) {
070: throw new FormatException("parsing",
071: RiceKeyConstants.ERROR_PERCENTAGE, target, e);
072: }
073: // end Kuali Foundation modification
074: }
075:
076: /**
077: * Returns a string representation of its argument, formatted as a percentage value.
078: *
079: * @return a formatted String
080: */
081: public Object format(Object value) {
082: if (value == null)
083: return "N/A";
084:
085: String stringValue = "";
086: try {
087: BigDecimal bigDecValue = (BigDecimal) value;
088: bigDecValue = bigDecValue.setScale(PERCENTAGE_SCALE,
089: BigDecimal.ROUND_HALF_UP);
090: stringValue = NumberFormat.getInstance().format(
091: bigDecValue.doubleValue());
092: } catch (IllegalArgumentException iae) {
093: // begin Kuali Foundation modification
094: throw new FormatException("formatting",
095: RiceKeyConstants.ERROR_PERCENTAGE,
096: value.toString(), iae);
097: // end Kuali Foundation modification
098: }
099:
100: return stringValue + " percent";
101: }
102: }
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