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Java > Open Source Codes > com > jcorporate > expresso > ext > struts > taglib > html > ExTextareaTag


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64
65 package com.jcorporate.expresso.ext.struts.taglib.html;
66
67 import com.jcorporate.expresso.core.controller.ControllerElement;
68 import com.jcorporate.expresso.core.controller.Input;
69 import com.jcorporate.expresso.core.misc.StringUtil;
70 import com.jcorporate.expresso.ext.struts.taglib.ControllerUtils;
71 import org.apache.struts.taglib.html.Constants;
72 import org.apache.struts.taglib.html.TextareaTag;
73 import org.apache.struts.util.ResponseUtils;
74
75 import javax.servlet.jsp.JspException JavaDoc;
76
77
78 /**
79  * Custom tag for input fields of type "textarea".
80  *
81  * @author Michael Nash
82  */
83 public class ExTextareaTag
84         extends TextareaTag {
85     // --------------------------------------------------------- Public Methods
86 /**
87      * Generate the required input tag.
88      *
89      * @return integer as defined in the standard tag library framework.
90      * @throws JspException if a JSP exception has occurred
91      */
92     public int doStartTag()
93             throws JspException JavaDoc {
94         Input myInput = null;
95         String JavaDoc nameToUse = name;
96
97         if (StringUtil.notNull(nameToUse).equals(Constants.BEAN_KEY)) {
98             nameToUse = null;
99         }
100         if (nameToUse == null) {
101             myInput = ControllerUtils.findInput(pageContext, property);
102         } else {
103             ControllerElement ce = ControllerUtils.findElement(pageContext,
104                     nameToUse,
105                     property);
106
107             if (ce == null) {
108                 throw new JspException JavaDoc("Input element '" +
109                         StringUtil.notNull(property) +
110                         "' not found.");
111             }
112             if (ce instanceof Input) {
113                 myInput = (Input) ce;
114             } else {
115                 throw new JspException JavaDoc("Element '" +
116                         StringUtil.notNull(property) +
117                         "' in bean '" +
118                         StringUtil.notNull(nameToUse) +
119                         "' is not an Input - it is a '" +
120                         ce.getClass().getName() + "'");
121             }
122         }
123
124         // Create an appropriate "input" element based on our parameters
125 StringBuffer JavaDoc results = new StringBuffer JavaDoc("<textarea");
126         results.append(" name=\"");
127         results.append(myInput.getName());
128         results.append("\"");
129
130         if (accesskey != null) {
131             results.append(" accesskey=\"");
132             results.append(accesskey);
133             results.append("\"");
134         }
135         if (tabindex != null) {
136             results.append(" tabindex=\"");
137             results.append(tabindex);
138             results.append("\"");
139         }
140
141         String JavaDoc colsToUse = cols;
142
143         if (colsToUse == null) {
144             colsToUse = "" + myInput.getDisplayLength();
145         }
146         if (colsToUse != null) {
147             results.append(" cols=\"");
148             results.append(colsToUse);
149             results.append("\"");
150         }
151
152         String JavaDoc rowsToUse = rows;
153
154         if (rowsToUse == null) {
155             rowsToUse = "" + myInput.getLines();
156         }
157         if (rowsToUse != null) {
158             results.append(" rows=\"");
159             results.append(rowsToUse);
160             results.append("\"");
161         }
162
163         results.append(prepareEventHandlers());
164         results.append(prepareStyles());
165         results.append(">");
166         results.append(myInput.getDefaultValue());
167         results.append("</textarea>");
168
169         // Print this field to our output writer
170 ResponseUtils.write(pageContext, results.toString());
171
172         // Continue processing this page
173 //return (EVAL_BODY_TAG);
174 return (EVAL_BODY_BUFFERED);
175     }
176 }
177
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