/*
* $Id: WriteRenderer.java 471754 2006-11-06 14:55:09Z husted $
*
* 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.struts.faces.renderer;
import java.io.IOException;
import javax.faces.component.UIComponent;
import javax.faces.component.UIViewRoot;
import javax.faces.component.ValueHolder;
import javax.faces.context.FacesContext;
import javax.faces.context.ResponseWriter;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.struts.util.ResponseUtils;
/**
* <p><code>Renderer</code> implementation for the <code>write</code> tag
* from the <em>Struts-Faces Integration Library</em>.</p>
*
* @version $Rev: 471754 $ $Date: 2006-11-06 15:55:09 +0100 (Lun, 06 nov 2006) $
*/
public class WriteRenderer extends AbstractRenderer {
// -------------------------------------------------------- Static Variables
/**
* <p>The <code>Log</code> instance for this class.</p>
*/
private static Log log = LogFactory.getLog(WriteRenderer.class);
// ---------------------------------------------------------- Public Methods
/**
* <p>Encode the specified text to our response.</p>
*
* @param context FacesContext for the response we are creating
* @param component Component to be rendered
*
* @exception IOException if an input/output error occurs
* @exception NullPointerException if <code>context</code>
* or <code>component</code> is <code>null</code>
*/
public void encodeEnd(FacesContext context, UIComponent component)
throws IOException {
if ((context == null) || (component == null)) {
throw new NullPointerException();
}
ResponseWriter writer = context.getResponseWriter();
String id = component.getId();
if ((id != null) && id.startsWith(UIViewRoot.UNIQUE_ID_PREFIX)) {
id = null;
}
String style =
(String) component.getAttributes().get("style");
String styleClass =
(String) component.getAttributes().get("styleClass");
if (log.isTraceEnabled()) {
log.trace("id='" + id + "', style='" + style + "', styleClass='" +
styleClass + "'");
}
if ((id != null) || (style != null) || (styleClass != null)) {
writer.startElement("span", component);
if (id != null) {
writer.writeAttribute("id", component.getClientId(context),
"id");
}
if (style != null) {
writer.writeAttribute("style", style, "style");
}
if (styleClass != null) {
writer.writeAttribute("class", styleClass, "styleClass");
}
writer.writeText("", null);
}
String text = getText(context, component);
if (log.isTraceEnabled()) {
log.trace("encodeEnd(" + component.getClientId(context) +
"," + text + ")");
}
writer.write(text);
if ((id != null) || (style != null) || (styleClass != null)) {
writer.endElement("span");
}
}
// ------------------------------------------------------- Protected Methods
/**
* <p>Return the text to be rendered for this component, optionally
* filtered if requested.</p>
*
* @param context FacesContext for the response we are creating
* @param component Component to be rendered
*/
protected String getText(FacesContext context, UIComponent component) {
String text = getAsString(context, component,
((ValueHolder) component).getValue());
Boolean filter = (Boolean) component.getAttributes().get("filter");
if (filter == null) {
filter = Boolean.FALSE;
}
if (filter.booleanValue()) {
return (ResponseUtils.filter(text));
} else {
return (text);
}
}
}