Magento files for question posted on stackoverflow

config.xml

<?xml version="1.0"?>
<config>
    <modules>
        <TestCheck_Checkout>
            <version>0.1.0</version>
        </TestCheck_Checkout>
    </modules>
    <global>
        <blocks>
          <checkout>
        		<rewrite>
        			<onepage>TestCheck_Checkout_Block_Onepage</onepage>
        		</rewrite>
        	</checkout>
        </blocks>
        <resources>
            <custom_setup>
                <setup>
                    <module>TestCheck_Checkout</module>
                </setup>
                <connection>
                    <use>core_setup</use>
                </connection>
            </custom_setup>
            <custom_write>
                <connection>
                    <use>core_write</use>
                </connection>
            </custom_write>
            <custom_read>
                <connection>
                    <use>core_read</use>
                </connection>
            </custom_read>
        </resources>
    </global>
    <frontend>
		<routers>
			<checkout>
				<args>
					<modules>
						<TestCheck_Checkout before="Mage_Checkout">TestCheck_Checkout</TestCheck_Checkout>
					</modules>
				</args>
			</checkout>
		</routers>
		<layout>
            <updates>
                <custom>
                    <file>custom.xml</file>
                </custom>
            </updates>
        </layout>
	</frontend>
</config>

custom.xml

<?xml version="1.0"?>
<layout version="0.1.0">
    <checkout_onepage_index> <!-- Adding our new step to onepage block  -->
      <reference name='checkout.onepage'>
    		 <action method='setTemplate'><template>checkout/onepage.phtml</template></action>
    		 <block type="checkout_onepage_testcheck" name="checkout.onepage.testcheck" as="testcheck" template="checkout/onepage/testcheck.phtml"/>
    	</reference>
    	<reference name='checkout.progress'> <!-- Change the template of progress block -->
    	      <action method='setTemplate'><template>checkout/onepage/progress.phtml</template></action>
    	</reference>
    </checkout_onepage_index>
    <checkout_onepage_progress>  <!-- Change the template of progress block -->
    	<reference name='root'>
    		<action method='setTemplate'><template>checkout/onepage/progress.phtml</template></action>
    	</reference>
    </checkout_onepage_progress>
</layout>

Onepage.php

<?php
class CheckTest_Model_Checkout_Type_Onepage extends Mage_Checkout_Model_Type_Onepage{
  public function saveTestCheck($data){
	
		//echo 'lalala';exit;
		if (empty($data)) {
			return array('error' => -1, 'message' => $this->_helper->__('Invalid data.'));
		}
		$this->getQuote()->setTestCheckLike($data['like']);
		$this->getQuote()->collectTotals();
		$this->getQuote()->save();

		$this->getCheckout()
		->setStepData('testcheck', 'allow', true)
		->setStepData('testcheck', 'complete', true)
		->setStepData('review', 'allow', true);

		return array();
	}
}

onepage.phtml

<div class="page-title">
    <h1><?php echo $this->__('Checkout') ?></h1>
</div>

testing...

<script type="text/javascript" src="<?php echo $this->getJsUrl('varien/accordion.js') ?>"></script>
<script type="text/javascript" src="<?php echo $this->getSkinUrl('js/opcheckout.js') ?>"></script>
<!-- New Code Added Below  -->
<script type="text/javascript" src="<?php echo $this->getSkinUrl('js/testcheckcheckout.js') ?>"></script>
<script type="text/javascript">countryRegions = <?php echo $this->helper('directory')->getRegionJson() ?></script>
<ol class="opc" id="checkoutSteps">
<?php var_dump($this->getSteps()); ?>

<?php $i=0; foreach($this->getSteps() as $_stepId => $_stepInfo): ?>
<?php if (!$this->getChild($_stepId) || !$this->getChild($_stepId)->isShow()): continue; endif; $i++ ?>
    <li id="opc-<?php echo $_stepId ?>" class="section<?php echo !empty($_stepInfo['allow'])?' allow':'' ?><?php echo !empty($_stepInfo['complete'])?' saved':'' ?>">
        <div class="step-title">
            <span class="number"><?php echo $i ?></span>
            <h2><?php echo $_stepInfo['label'] ?></h2>
            <a href="#"><?php echo $this->__('Edit') ?></a>
        </div>
        <div id="checkout-step-<?php echo $_stepId ?>" class="step a-item" style="display:none;">
            <?php echo $this->getChildHtml($_stepId) ?>
        </div>
    </li>
<?php endforeach ?>
</ol>
<script type="text/javascript">
    var accordion = new Accordion('checkoutSteps', '.step-title', true);
    <?php if($this->getActiveStep()): ?>
    accordion.openSection('opc-<?php echo $this->getActiveStep() ?>');
    <?php endif ?>
    
    var checkout = new TestCheck(accordion,{
        progress: '<?php echo $this->getUrl('checkout/onepage/progress') ?>',
        review: '<?php echo $this->getUrl('checkout/onepage/review') ?>',
        saveMethod: '<?php echo $this->getUrl('checkout/onepage/saveMethod') ?>',
        failure: '<?php echo $this->getUrl('checkout/cart') ?>'}
    );
</script>

OnepageController.php

<?php
require_once 'Mage/Checkout/controllers/OnepageController.php';

class TestCheck_Checkout_OnepageController extends  Mage_Checkout_OnepageController{

  public function saveTestCheckAction(){
		if ($this->_expireAjax()) {
			return;
		}
		if ($this->getRequest()->isPost()) {
			$data = $this->getRequest()->getPost('testcheck', array());
			
			// get section and redirect data
			$redirectUrl = $this->getOnepage()->getQuote()->getPayment()->getCheckoutRedirectUrl();

			$result = $this->getOnepage()->saveTestCheck($data);

			if (!isset($result['error'])) {
				$this->loadLayout('checkout_onepage_review');
				$result['goto_section'] = 'review';
				$result['update_section'] = array(
					'name' => 'review',
					'html' => $this->_getReviewHtml()
				);
			}
			if ($redirectUrl) {
				$result['redirect'] = $redirectUrl;
			}

			$this->getResponse()->setBody(Mage::helper('core')->jsonEncode($result));
		}
	}
	
	protected function _getTestCheckHtml()
	{
		$layout = $this->getLayout();
		$update = $layout->getUpdate();
		$update->load('checkout_onepage_testcheck');
		$layout->generateXml();
		$layout->generateBlocks();
		$output = $layout->getOutput();
		return $output;
	}
	
	public function savePaymentAction()
    {
        if ($this->_expireAjax()) {
            return;
        }
        try {
            if (!$this->getRequest()->isPost()) {
                $this->_ajaxRedirectResponse();
                return;
            }
 
            // set payment to quote
            $result = array();
            $data = $this->getRequest()->getPost('payment', array());
            $result = $this->getOnepage()->savePayment($data);
 
            if (empty($result['error'])) {
                $result['goto_section'] = 'testcheck';
                $result['update_section'] = array(
                    'name' => 'testcheck',
                    'html' => $this->_getTestCheckHtml()
                );
            }
 
        } catch (Mage_Payment_Exception $e) {
            if ($e->getFields()) {
                $result['fields'] = $e->getFields();
            }
            $result['error'] = $e->getMessage();
        } catch (Mage_Core_Exception $e) {
            $result['error'] = $e->getMessage();
        } catch (Exception $e) {
            Mage::logException($e);
            $result['error'] = $this->__('Unable to set Payment Method.');
        }
        $this->getResponse()->setBody(Mage::helper('core')->jsonEncode($result));
    }
}

progress.phtml

<?php
/**
 * Magento
 *
 * NOTICE OF LICENSE
 *
 * This source file is subject to the Academic Free License (AFL 3.0)
 * that is bundled with this package in the file LICENSE_AFL.txt.
 * It is also available through the world-wide-web at this URL:
 * http://opensource.org/licenses/afl-3.0.php
 * If you did not receive a copy of the license and are unable to
 * obtain it through the world-wide-web, please send an email
 * to license@magentocommerce.com so we can send you a copy immediately.
 *
 * DISCLAIMER
 *
 * Do not edit or add to this file if you wish to upgrade Magento to newer
 * versions in the future. If you wish to customize Magento for your
 * needs please refer to http://www.magentocommerce.com for more information.
 *
 * @category    design
 * @package     base_default
 * @copyright   Copyright (c) 2012 Magento Inc. (http://www.magentocommerce.com)
 * @license     http://opensource.org/licenses/afl-3.0.php  Academic Free License (AFL 3.0)
 */
/* @var $this Mage_Checkout_Block_Onepage_Progress */
?>
<div class="block block-progress opc-block-progress">
    <div class="block-title">
        <strong><span><?php echo $this->__('Your Checkout Progress') ?></span></strong>
    </div>
    <div class="block-content">
        <dl>
        <?php if ($this->getCheckout()->getStepData('billing', 'is_show')): ?>
        <?php if ($this->isStepComplete('billing')): ?>
            <dt class="complete">
                <?php echo $this->__('Billing Address') ?> <span class="separator">|</span>
                <a href="#billing" onclick="checkout.gotoSection('billing'); return false;"><?php echo $this->__('Change') ?></a>
            </dt>
            <dd class="complete">
                <address><?php echo $this->getBilling()->format('html') ?></address>
            </dd>
        <?php else: ?>
            <dt>
                <?php echo $this->__('Billing Address') ?>
            </dt>
        <?php endif; ?>
        <?php endif; ?>

        <?php if ($this->getCheckout()->getStepData('shipping', 'is_show')): ?>
        <?php if ($this->isStepComplete('shipping')): ?>
            <dt class="complete">
                <?php echo $this->__('Shipping Address') ?> <span class="separator">|</span>
                <a href="#payment" onclick="checkout.gotoSection('shipping');return false;"><?php echo $this->__('Change') ?></a>
            </dt>
            <dd class="complete">
                <address><?php echo $this->getShipping()->format('html') ?></address>
            </dd>
        <?php else: ?>
            <dt>
                <?php echo $this->__('Shipping Address') ?>
            </dt>
        <?php endif; ?>
        <?php endif; ?>

        <?php if ($this->getCheckout()->getStepData('shipping_method', 'is_show')): ?>
        <?php if ($this->isStepComplete('shipping_method')): ?>
            <dt class="complete">
                <?php echo $this->__('Shipping Method') ?> <span class="separator">|</span>
                <a href="#shipping_method" onclick="checkout.gotoSection('shipping_method'); return false;"><?php echo $this->__('Change') ?></a>
            </dt>
            <dd class="complete">
                <?php if ($this->getShippingMethod()): ?>
                    <?php echo $this->escapeHtml($this->getShippingDescription()) ?>

                    <?php $_excl = $this->getShippingPriceExclTax(); ?>
                    <?php $_incl = $this->getShippingPriceInclTax(); ?>
                    <?php if ($this->helper('tax')->displayShippingPriceIncludingTax()): ?>
                        <?php echo $_incl; ?>
                    <?php else: ?>
                        <?php echo $_excl; ?>
                    <?php endif; ?>
                    <?php if ($this->helper('tax')->displayShippingBothPrices() && $_incl != $_excl): ?>
                        (<?php echo $this->__('Incl. Tax'); ?> <?php echo $_incl; ?>)
                    <?php endif; ?>

                <?php else: ?>
                    <?php echo $this->__('Shipping method has not been selected yet') ?>
                <?php endif; ?>
            </dd>
        <?php else: ?>
            <dt>
                <?php echo $this->__('Shipping Method') ?>
            </dt>
        <?php endif; ?>
        <?php endif; ?>
        

        <?php if ($this->getCheckout()->getStepData('payment', 'is_show')): ?>
        <?php if ($this->isStepComplete('payment')): ?>
            <dt class="complete">
                <?php echo $this->__('Payment Method') ?> <span class="separator">|</span>
                <a href="#payment" onclick="checkout.gotoSection('payment'); return false;"><?php echo $this->__('Change') ?></a>
            </dt>
            <dd class="complete">
                <?php echo $this->getPaymentHtml() ?>
            </dd>
        <?php else: ?>
            <dt>
                <?php echo $this->__('Payment Method') ?>
            </dt>
        <?php endif; ?>
        <?php endif; ?>

        <?php if ($this->getCheckout()->getStepData('testcheck', 'is_show')): ?>
        <?php if($this->getCheckout()->getStepData('testcheck', 'complete')): ?>
            <dt class="complete">
                <?php echo $this->__('TestCheck Review') ?> <span class="separator">|</span> <a href="#testcheck" onclick="checkout.accordion.openSection('opc-testcheck'); return false;"><?php echo $this->__('Change') ?></a>
            </dt>
            <dd class="complete">
                <div>
                    <?php echo $this->__('Testcheck Review Is: ');?>
                    <?php
                        $like = $this->getQuote()->getTestCheckLike();
                        echo $like;
                    ?>
                </div>
            </dd>
        <?php else: ?>
            <dt>
                <?php echo $this->__('TestCheck') ?>
            </dt>
        <?php endif; ?>
        <?php endif; ?>
        </dl>
    </div>
</div>

TestCheck.php

<?php
class TestCheck_Checkout_Block_Onepage_TestCheck extends Mage_Checkout_Block_Onepage_Abstract{

  protected function _construct(){
		$this->getCheckout()->setStepData('testcheck', array(
            'label'     => Mage::helper('checkout')->__('Test Check'),
            'is_show'   => $this->isShow()
		));
		parent::_construct();
	}
	
}

testcheck.phtml

<?php echo 'testcheck one page lalalal'; ?>
<form id="co-testcheck-form" action="">
<fieldset>
    <ul class="form-list">
    <li id="testcheck-form">
        <fieldset>
            <ul>
                <li class="wide">
                    <label for="testcheck:like" class="required"><em>*</em><?php echo $this->__('Do you like this post?') ?></label>
                    <div class="input-box">
                        <input type='text' name='testcheck[like]'  class="required-entry input-text" id="testcheck:like" value='testing testing'/>
                    </div>
                </li>
            </ul>
        </fieldset>
     </li>
    </ul>
    <div class="buttons-set" id="testcheck-buttons-container">
        <p class="required"><?php echo $this->__('* Required Fields') ?></p>
        <button type="button" title="<?php echo $this->__('Continue') ?>" class="button" onclick="testcheck.save()"><span><span><?php echo $this->__('Continue') ?></span></span></button>
        <span class="please-wait" id="testcheck-please-wait" style="display:none;">
            <img src="<?php echo $this->getSkinUrl('images/opc-ajax-loader.gif') ?>" alt="<?php echo $this->__('Loading next step...') ?>" title="<?php echo $this->__('Loading next step...') ?>" class="v-middle" /> <?php echo $this->__('Loading next step...') ?>
        </span>
    </div>
</fieldset>
</form>
<script type="text/javascript">
//<![CDATA[
    var testcheck = new TestCheckMethod('co-tetscheck-form','<?php echo $this->getUrl('onepage/saveTestCheck') ?>');
    var testcheckForm = new VarienForm('co-testcheck-form');
//]]>
</script>

TestCheck_Checkout.xml

<?xml version="1.0"?>
<config>
    <modules>
        <TestCheck_Checkout>
            <active>true</active>
            <codePool>local</codePool>
        </TestCheck_Checkout>
    </modules>
</config> 

testcheckcheckout.js

var TestCheck = Class.create(Checkout, {
  initialize: function($super,accordion, urls){
		$super(accordion, urls);
		//New Code Addded
		this.steps = ['login', 'billing', 'shipping', 'shipping_method', 'payment', 'testcheck', 'review'];
	},
	setMethod: function(){
	    if ($('login:guest') && $('login:guest').checked) {
	        this.method = 'guest';
	        var request = new Ajax.Request(
	            this.saveMethodUrl,
	            {method: 'post', onFailure: this.ajaxFailure.bind(this), parameters: {method:'guest'}}
	        );
	        Element.hide('register-customer-password');
	    }
	    else if($('login:register') && ($('login:register').checked || $('login:register').type == 'hidden')) {
	        this.method = 'register';
	        var request = new Ajax.Request(
	            this.saveMethodUrl,
	            {method: 'post', onFailure: this.ajaxFailure.bind(this), parameters: {method:'register'}}
	        );
	        Element.show('register-customer-password');
	    }
	    else{
	        alert(Translator.translate('Please choose to register or to checkout as a guest'));
	        return false;
	    }
	}
});

var TestCheckMethod = Class.create();
TestCheckMethod.prototype = {
    initialize: function(form, saveUrl){
        this.form = form;
        if ($(this.form)) {
            $(this.form).observe('submit', function(event){this.save();Event.stop(event);}.bind(this));
        }
        this.saveUrl = saveUrl;
        this.validator = new Validation(this.form);
        this.onSave = this.nextStep.bindAsEventListener(this);
        this.onComplete = this.resetLoadWaiting.bindAsEventListener(this);
    },

    validate: function() {
        if(!this.validator.validate()) {
            return false;
        }
        return true;
    },

    save: function(){

        if (checkout.loadWaiting!=false) return;
        if (this.validate()) {
            checkout.setLoadWaiting('testcheck');
            var request = new Ajax.Request(
                this.saveUrl,
                {
                    method:'post',
                    onComplete: this.onComplete,
                    onSuccess: this.onSave,
                    onFailure: checkout.ajaxFailure.bind(checkout),
                    parameters: Form.serialize(this.form)
                }
            );
        }
    },

    resetLoadWaiting: function(transport){
        checkout.setLoadWaiting(false);
    },

    nextStep: function(transport){
        if (transport && transport.responseText){
            try{
                response = eval('(' + transport.responseText + ')');
            }
            catch (e) {
                response = {};
            }
        }

        if (response.error) {
            alert(response.message);
            return false;
        }

        if (response.update_section) {
            $('checkout-'+response.update_section.name+'-load').update(response.update_section.html);
        }


        if (response.goto_section) {
            checkout.gotoSection(response.goto_section);
            checkout.reloadProgressBlock();
            return;
        }

        checkout.review();
    }
}