01: /*
02: * $Id: ELHtmlTagBeanInfo.java 471754 2006-11-06 14:55:09Z husted $
03: *
04: * Licensed to the Apache Software Foundation (ASF) under one
05: * or more contributor license agreements. See the NOTICE file
06: * distributed with this work for additional information
07: * regarding copyright ownership. The ASF licenses this file
08: * to you under the Apache License, Version 2.0 (the
09: * "License"); you may not use this file except in compliance
10: * with the License. You may obtain a copy of the License at
11: *
12: * http://www.apache.org/licenses/LICENSE-2.0
13: *
14: * Unless required by applicable law or agreed to in writing,
15: * software distributed under the License is distributed on an
16: * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
17: * KIND, either express or implied. See the License for the
18: * specific language governing permissions and limitations
19: * under the License.
20: */
21: package org.apache.strutsel.taglib.html;
22:
23: import java.beans.IntrospectionException;
24: import java.beans.PropertyDescriptor;
25: import java.beans.SimpleBeanInfo;
26:
27: import java.util.ArrayList;
28:
29: /**
30: * This is the <code>BeanInfo</code> descriptor for the
31: * <code>org.apache.strutsel.taglib.html.ELHtmlTag</code> class. It is needed
32: * to override the default mapping of custom tag attribute names to class
33: * attribute names. <p> This is because the value of the unevaluated EL
34: * expression has to be kept separately from the evaluated value, which is
35: * stored in the base class. This is related to the fact that the JSP compiler
36: * can choose to reuse different tag instances if they received the same
37: * original attribute values, and the JSP compiler can choose to not re-call
38: * the setter methods, because it can assume the same values are already set.
39: */
40: public class ELHtmlTagBeanInfo extends SimpleBeanInfo {
41: public PropertyDescriptor[] getPropertyDescriptors() {
42: ArrayList proplist = new ArrayList();
43:
44: try {
45: proplist.add(new PropertyDescriptor("xhtml",
46: ELHtmlTag.class, null, "setXhtmlExpr"));
47: } catch (IntrospectionException ex) {
48: }
49:
50: try {
51: proplist.add(new PropertyDescriptor("lang",
52: ELHtmlTag.class, null, "setLangExpr"));
53: } catch (IntrospectionException ex) {
54: }
55:
56: PropertyDescriptor[] result = new PropertyDescriptor[proplist
57: .size()];
58:
59: return ((PropertyDescriptor[]) proplist.toArray(result));
60: }
61: }
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