/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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.empire.struts2.jsp.tags;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.jsp.JspException;
import org.apache.empire.struts2.action.ActionErrorProvider;
import org.apache.empire.struts2.html.HtmlTagDictionary;
import org.apache.empire.struts2.html.HtmlWriter;
import org.apache.empire.struts2.html.HtmlWriter.HtmlTag;
import org.apache.struts2.components.Component;
import com.opensymphony.xwork2.util.ValueStack;
@SuppressWarnings("serial")
public class ActionMessageTag extends EmpireTagSupport
{
@Override
public Component getBean(ValueStack stack, HttpServletRequest req, HttpServletResponse res)
{
return null;
}
@Override
public int doStartTag()
throws JspException
{
// Get the action
Object action = getAction();
if (action instanceof ActionErrorProvider)
{ // Tabel cell tag
HtmlWriter w = new HtmlWriter(pageContext.getOut());
renderMessage(w, (ActionErrorProvider)action);
}
else
{ // Error: Action does implement ActionErrorProvider
log.error("Cannot render message. Action does implement ActionErrorProvider.");
}
// wrap.beginBody(getTextValue());
// return usesBody ? EVAL_BODY_BUFFERED : EVAL_BODY_INCLUDE;
return SKIP_BODY;
}
@Override
public int doEndTag()
throws JspException
{ // done
resetParams();
return EVAL_PAGE;
}
// ------- render helpers -------
private void renderMessage(HtmlWriter w, ActionErrorProvider provider)
{
// Get errors
String msg = provider.getLastActionMessage(true);
if (msg==null || msg.length()==0)
return; // Nothing to render
// Render error list
HtmlTagDictionary dic = HtmlTagDictionary.getInstance();
HtmlTag tag = w.startTag(dic.MessageTag());
addStandardAttributes(tag, dic.MessageClass());
tag.endTag(msg);
}
}