JSF 2.0: How to override base renderers with custom ones?

Question

I am trying to override renderer for h:selectBooleanCheckbox (for the reasons explained here):

However, I find it impossible to register my renderer. I

Answer 1

Your initial <renderer> declaration looks fine, so I tried it here.

package com.myapp;

import java.io.IOException;

import javax.faces.component.UIComponent;
import javax.faces.context.FacesContext;

import com.sun.faces.renderkit.html_basic.CheckboxRenderer;

public class CustomCheckboxRenderer extends CheckboxRenderer {

    public CustomCheckboxRenderer() {
        System.out.println("CustomCheckboxRenderer <init>");
    }

    @Override
    public void decode(FacesContext context, UIComponent component) {
        System.out.println("CustomCheckboxRenderer decode()");
        super.decode(context, component);
    }

    @Override
    public void encodeBegin(FacesContext context, UIComponent component) throws IOException {
        System.out.println("CustomCheckboxRenderer encodeBegin()");
        super.encodeBegin(context, component);
    }

    @Override
    public void encodeEnd(FacesContext context, UIComponent component) throws IOException {
        System.out.println("CustomCheckboxRenderer encodeEnd()");
        super.encodeEnd(context, component);
    }

}

It works fine. All get printed to stdout. Your problem lies somewhere else. I was using Mojarra 2.0.3 on Tomcat 7.0.5.

Answer 2

I add renderers to my faces-config.xml like so:

<faces-config>
    <!--elided-->
<render-kit>
    <render-kit-id>HTML_BASIC</render-kit-id>
    <renderer>
        <display-name>MyRenderer</display-name>
        <component-family>javax.faces.Output</component-family>
        <renderer-type>foo.MyRenderer</renderer-type>
        <renderer-class>foo.MyRenderer</renderer-class>
        <!-- TODO: attributes for tooling -->

You don't need to (and shouldn't) declare a new render kit class in this scenario.