CompositeFacetRenderer.java

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package com.sun.faces.renderkit.html_basic;

import com.sun.faces.util.FacesLogger;
import com.sun.faces.util.Util;

import java.io.IOException;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.faces.component.UIComponent;
import javax.faces.context.FacesContext;
import javax.faces.render.Renderer;

/**
 * <p>
 * This <code>Renderer</code> is responsible for rendering the content of a
 * facet defined within the <em>using page</em> template in the desired location
 * within the composite component implementation section.
 * </p>
 */
public class CompositeFacetRenderer extends Renderer {

    private static final Logger logger = FacesLogger.RENDERKIT.getLogger();


    // --------------------------------------------------- Methods from Renderer


    @Override
    public void encodeChildren(FacesContext context, UIComponent component)
    throws IOException {

        Util.notNull("context", context);
        Util.notNull("component", component);

        String facetName = (String)
              component.getAttributes().get(UIComponent.FACETS_KEY);
        if (null == facetName) {
            return;
        }

        UIComponent currentCompositeComponent = UIComponent
              .getCurrentCompositeComponent(context);
        if (null != currentCompositeComponent) {
            UIComponent facet = currentCompositeComponent.getFacet(facetName);
            if (null != facet) {
                facet.encodeAll(context);
            } else {
                if (logger.isLoggable(Level.FINE)) {
                    logger.log(Level.FINE,
                               "Could not find facet named {0}",
                               facetName);
                }
            }
        }
    }


    @Override
    public boolean getRendersChildren() {
        return true;
    }

}