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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 &lt;textarea&gt; 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 }