?? textareatag.java
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/*
* $Id: TextareaTag.java 164530 2005-04-25 03:11:07Z niallp $
*
* Copyright 1999-2005 The Apache Software Foundation.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.struts.taglib.html;
import javax.servlet.jsp.JspException;
import org.apache.struts.taglib.TagUtils;
/**
* Custom tag for input fields of type "textarea".
*
* @version $Rev: 164530 $ $Date: 2005-04-25 04:11:07 +0100 (Mon, 25 Apr 2005) $
*/
public class TextareaTag extends BaseInputTag {
// ----------------------------------------------------- Constructor
public TextareaTag () {
super();
doReadonly = true;
}
// --------------------------------------------------------- Public Methods
/**
* Generate the required input tag.
* Support for indexed since Struts 1.1
*
* @exception JspException if a JSP exception has occurred
*/
public int doStartTag() throws JspException {
TagUtils.getInstance().write(pageContext, this.renderTextareaElement());
return (EVAL_BODY_TAG);
}
/**
* Generate an HTML <textarea> tag.
* @throws JspException
* @since Struts 1.1
*/
protected String renderTextareaElement() throws JspException {
StringBuffer results = new StringBuffer("<textarea");
prepareAttribute(results, "name", prepareName());
prepareAttribute(results, "accesskey", getAccesskey());
prepareAttribute(results, "tabindex", getTabindex());
prepareAttribute(results, "cols", getCols());
prepareAttribute(results, "rows", getRows());
results.append(prepareEventHandlers());
results.append(prepareStyles());
prepareOtherAttributes(results);
results.append(">");
results.append(this.renderData());
results.append("</textarea>");
return results.toString();
}
/**
* Renders the value displayed in the <textarea> tag.
* @throws JspException
* @since Struts 1.1
*/
protected String renderData() throws JspException {
String data = this.value;
if (data == null) {
data = this.lookupProperty(this.name, this.property);
}
return (data == null) ? "" : TagUtils.getInstance().filter(data);
}
/**
* Release any acquired resources.
*/
public void release() {
super.release();
name = Constants.BEAN_KEY;
}
}
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