01: /*
02: * Copyright 2005-2006 The Kuali Foundation.
03: *
04: *
05: * Licensed under the Educational Community License, Version 1.0 (the "License");
06: * you may not use this file except in compliance with the License.
07: * You may obtain a copy of the License at
08: *
09: * http://www.opensource.org/licenses/ecl1.php
10: *
11: * Unless required by applicable law or agreed to in writing, software
12: * distributed under the License is distributed on an "AS IS" BASIS,
13: * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14: * See the License for the specific language governing permissions and
15: * limitations under the License.
16: */
17: package edu.iu.uis.eden.lookupable;
18:
19: import javax.servlet.jsp.PageContext;
20:
21: import org.apache.commons.lang.StringUtils;
22: import org.displaytag.decorator.DisplaytagColumnDecorator;
23: import org.displaytag.exception.DecoratorException;
24: import org.displaytag.properties.MediaTypeEnum;
25:
26: import edu.iu.uis.eden.EdenConstants;
27:
28: /**
29: * A ColumnDecorator for columns in a Lookup which adds an extra non-breaking space if the column
30: * is an empty String.
31: *
32: * @author ewestfal
33: */
34: public class LookupColumnDecorator implements DisplaytagColumnDecorator {
35:
36: public Object decorate(Object columnValue, PageContext pageContext,
37: MediaTypeEnum media) throws DecoratorException {
38: if (columnValue == null) {
39: return EdenConstants.HTML_NON_BREAKING_SPACE;
40: }
41: if (columnValue instanceof String
42: && StringUtils.isEmpty(((String) columnValue).trim())) {
43: return EdenConstants.HTML_NON_BREAKING_SPACE;
44: }
45: return columnValue;
46: }
47:
48: }
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