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Facelets is an open source alternative view handler technology for JavaServer Faces (JSF).

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package com.sun.facelets.component;

import java.io.IOException;
import java.util.Iterator;
import java.util.Map;

import javax.faces.component.UIComponent;
import javax.faces.context.FacesContext;
import javax.faces.context.ResponseWriter;
import javax.faces.render.Renderer;

import com.sun.facelets.tag.jsf.ComponentSupport;
import com.sun.facelets.util.FacesAPI;

public class RepeatRenderer extends Renderer {

    public RepeatRenderer() {
        super();
    }

    public void encodeBegin(FacesContext context, UIComponent component) throws IOException {
        
    }

    public void encodeChildren(FacesContext context, UIComponent component) throws IOException {
        if (component.getChildCount() > 0) {
            Map a = component.getAttributes();
            String tag = (String) a.get("alias.element");
            if (tag != null) {
                ResponseWriter out = context.getResponseWriter();
                out.startElement(tag, component);
                String[] attrs = (String[]) a.get("alias.attributes");
                String attr;
                if (attrs != null) {
                    for (int i = 0; i < attrs.length; i++) {
                        attr = attrs[i];
                        if ("styleClass".equals(attr)) {
                            attr = "class";
                        }
                        out.writeAttribute(attr, a.get(attrs[i]), attrs[i]);
                    }
                }
            }
            
            Iterator itr = component.getChildren().iterator();
            UIComponent c;
            while (itr.hasNext()) {
                c = (UIComponent) itr.next();
                if (FacesAPI.getVersion() >= 12) {
                    c.encodeAll(context);
                } else {
                    ComponentSupport.encodeRecursive(context, c);
                }
            }
            
            if (tag != null) {
                context.getResponseWriter().endElement(tag);
            }
        }
    }

    public void encodeEnd(FacesContext context, UIComponent component) throws IOException {
      
    }
    
    public boolean getRendersChildren() {
        return true;
    }

}