1 /*
2 * $Id: TextareaTag.java 471754 2006-11-06 14:55:09Z husted $
3 *
4 * Licensed to the Apache Software Foundation (ASF) under one
5 * or more contributor license agreements. See the NOTICE file
6 * distributed with this work for additional information
7 * regarding copyright ownership. The ASF licenses this file
8 * to you under the Apache License, Version 2.0 (the
9 * "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.struts.taglib.html;
22
23 import org.apache.struts.taglib.TagUtils;
24
25 import javax.servlet.jsp.JspException;
26
27 /**
28 * Custom tag for input fields of type "textarea".
29 *
30 * @version $Rev: 471754 $ $Date: 2005-04-06 02:37:00 -0400 (Wed, 06 Apr 2005)
31 * $
32 */
33 public class TextareaTag extends BaseInputTag {
34 // ----------------------------------------------------- Constructor
35 public TextareaTag() {
36 super();
37 doReadonly = true;
38 }
39
40 // --------------------------------------------------------- Public Methods
41
42 /**
43 * Generate the required input tag. Support for indexed since Struts 1.1
44 *
45 * @throws JspException if a JSP exception has occurred
46 */
47 public int doStartTag() throws JspException {
48 TagUtils.getInstance().write(pageContext, this.renderTextareaElement());
49
50 return (EVAL_BODY_TAG);
51 }
52
53 /**
54 * Generate an HTML <textarea> tag.
55 *
56 * @throws JspException
57 * @since Struts 1.1
58 */
59 protected String renderTextareaElement()
60 throws JspException {
61 StringBuffer results = new StringBuffer("<textarea");
62
63 prepareAttribute(results, "name", prepareName());
64 prepareAttribute(results, "accesskey", getAccesskey());
65 prepareAttribute(results, "tabindex", getTabindex());
66 prepareAttribute(results, "cols", getCols());
67 prepareAttribute(results, "rows", getRows());
68 results.append(prepareEventHandlers());
69 results.append(prepareStyles());
70 prepareOtherAttributes(results);
71 results.append(">");
72
73 results.append(this.renderData());
74
75 results.append("</textarea>");
76
77 return results.toString();
78 }
79
80 /**
81 * Renders the value displayed in the <textarea> tag.
82 *
83 * @throws JspException
84 * @since Struts 1.1
85 */
86 protected String renderData()
87 throws JspException {
88 String data = this.value;
89
90 if (data == null) {
91 data = this.lookupProperty(this.name, this.property);
92 }
93
94 return (data == null) ? "" : TagUtils.getInstance().filter(data);
95 }
96
97 /**
98 * Release any acquired resources.
99 */
100 public void release() {
101 super.release();
102 name = Constants.BEAN_KEY;
103 }
104 }