BodyRenderer.java

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 * obtain a copy of the License at
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package com.sun.faces.renderkit.html_basic;

import java.io.IOException;
import java.util.ListIterator;
import javax.faces.component.UIComponent;
import javax.faces.component.UIViewRoot;
import javax.faces.context.FacesContext;
import javax.faces.context.ResponseWriter;
import com.sun.faces.renderkit.RenderKitUtils;
import com.sun.faces.renderkit.Attribute;
import com.sun.faces.renderkit.AttributeManager;

/**
 * <p>This <code>Renderer</code> is responsible for rendering
 * the standard HTML body element as well as rendering any resources
 * that should be output before the <code>body</code> tag is closed.</p>
 */
public class BodyRenderer extends HtmlBasicRenderer {

    private static final Attribute[] BODY_ATTRIBUTES =
             AttributeManager.getAttributes(AttributeManager.Key.OUTPUTBODY);


    @Override
    public void decode(FacesContext context, UIComponent component) {
        // no-op
    }

    /**
     * Encode the beginning.
     * 
     * @param context the Faces context.
     * @param component the UI component.
     * @throws IOException when an I/O error occurs.
     */
    @Override
    public void encodeBegin(FacesContext context, UIComponent component)
          throws IOException {
        ResponseWriter writer = context.getResponseWriter();
        writer.startElement("body", component);
        writeIdAttributeIfNecessary(context, writer, component);
        String styleClass = (String) component.getAttributes().get("styleClass");
        if (styleClass != null && styleClass.length() != 0) {
            writer.writeAttribute("class", styleClass, "styleClass");
        }
        RenderKitUtils.renderPassThruAttributes(context,
                                                writer,
                                                component,
                                                BODY_ATTRIBUTES);
    }

    @Override
    public void encodeChildren(FacesContext context, UIComponent component)
          throws IOException {
        // no-op
    }

    @Override
    public void encodeEnd(FacesContext context, UIComponent component)
          throws IOException {
        ResponseWriter writer = context.getResponseWriter();
        UIViewRoot viewRoot = context.getViewRoot();
        ListIterator iter = (viewRoot.getComponentResources(context, "body")).listIterator();
        while (iter.hasNext()) {
            UIComponent resource = (UIComponent)iter.next();
            resource.encodeAll(context);
        }
        RenderKitUtils.renderUnhandledMessages(context);
        writer.endElement("body");
    }
    
    /**
     * Do we render our children.
     * 
     * @return false.
     */
    @Override
    public boolean getRendersChildren() {
        return false;
    }
}