com.sun.faces.renderkit.html_basic.GroupRenderer Maven / Gradle / Ivy
Go to download
Show more of this group Show more artifacts with this name
Show all versions of jsf-impl Show documentation
Show all versions of jsf-impl Show documentation
This is the master POM file for Oracle's Implementation of the JSF 2.2 Specification.
/*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
*
* Copyright (c) 1997-2010 Oracle and/or its affiliates. All rights reserved.
*
* The contents of this file are subject to the terms of either the GNU
* General Public License Version 2 only ("GPL") or the Common Development
* and Distribution License("CDDL") (collectively, the "License"). You
* may not use this file except in compliance with the License. You can
* obtain a copy of the License at
* https://glassfish.dev.java.net/public/CDDL+GPL_1_1.html
* or packager/legal/LICENSE.txt. See the License for the specific
* language governing permissions and limitations under the License.
*
* When distributing the software, include this License Header Notice in each
* file and include the License file at packager/legal/LICENSE.txt.
*
* GPL Classpath Exception:
* Oracle designates this particular file as subject to the "Classpath"
* exception as provided by Oracle in the GPL Version 2 section of the License
* file that accompanied this code.
*
* Modifications:
* If applicable, add the following below the License Header, with the fields
* enclosed by brackets [] replaced by your own identifying information:
* "Portions Copyright [year] [name of copyright owner]"
*
* Contributor(s):
* If you wish your version of this file to be governed by only the CDDL or
* only the GPL Version 2, indicate your decision by adding "[Contributor]
* elects to include this software in this distribution under the [CDDL or GPL
* Version 2] license." If you don't indicate a single choice of license, a
* recipient has the option to distribute your version of this file under
* either the CDDL, the GPL Version 2 or to extend the choice of license to
* its licensees as provided above. However, if you add GPL Version 2 code
* and therefore, elected the GPL Version 2 license, then the option applies
* only if the new code is made subject to such option by the copyright
* holder.
*/
package com.sun.faces.renderkit.html_basic;
import com.sun.faces.renderkit.Attribute;
import com.sun.faces.renderkit.AttributeManager;
import com.sun.faces.renderkit.RenderKitUtils;
import java.io.IOException;
import java.util.Iterator;
import javax.faces.component.UIComponent;
import javax.faces.context.FacesContext;
import javax.faces.context.ResponseWriter;
/**
* Arbitrary grouping "renderer" that simply renders its children
* recursively in the encodeEnd() method.
*
*/
public class GroupRenderer extends HtmlBasicRenderer {
private static final Attribute[] ATTRIBUTES =
AttributeManager.getAttributes(AttributeManager.Key.PANELGROUP);
// ---------------------------------------------------------- Public Methods
@Override
public void encodeBegin(FacesContext context, UIComponent component)
throws IOException {
rendererParamsNotNull(context, component);
if (!shouldEncode(component)) {
return;
}
// Render a span around this group if necessary
String style = (String) component.getAttributes().get("style");
String styleClass = (String) component.getAttributes().get("styleClass");
ResponseWriter writer = context.getResponseWriter();
if (divOrSpan(component)) {
if (("block".equals(component.getAttributes().get("layout")))) {
writer.startElement("div", component);
} else {
writer.startElement("span", component);
}
writeIdAttributeIfNecessary(context, writer, component);
if (styleClass != null) {
writer.writeAttribute("class", styleClass, "styleClass");
}
// JAVASERVERFACES-3270: do not manually render "style" as it is handled
// in renderPassThruAttributes().
}
RenderKitUtils.renderPassThruAttributes(context,
writer,
component,
ATTRIBUTES);
}
@Override
public void encodeChildren(FacesContext context, UIComponent component)
throws IOException {
rendererParamsNotNull(context, component);
if (!shouldEncodeChildren(component)) {
return;
}
// Render our children recursively
Iterator kids = getChildren(component);
while (kids.hasNext()) {
encodeRecursive(context, kids.next());
}
}
@Override
public void encodeEnd(FacesContext context, UIComponent component)
throws IOException {
rendererParamsNotNull(context, component);
if (!shouldEncode(component)) {
return;
}
// Close our span element if necessary
ResponseWriter writer = context.getResponseWriter();
if (divOrSpan(component)) {
if ("block".equals(component.getAttributes().get("layout"))) {
writer.endElement("div");
} else {
writer.endElement("span");
}
}
}
@Override
public boolean getRendersChildren() {
return true;
}
// --------------------------------------------------------- Private Methods
/**
* @param component UIComponent for this group
*
* @return true if we need to render a div or span element
* around this group.
*/
private boolean divOrSpan(UIComponent component) {
return (shouldWriteIdAttribute(component) ||
(component.getAttributes().get("style") != null) ||
(component.getAttributes().get("styleClass") != null));
}
}