Menu Block for JR CleverCMS

<?php
/**
 * @category   JR
 * @package    JR_CleverCms
 * @author     Ng Kiat Siong, Celera eShop, kiatsiong.ng@gmail.com
 */

class JR_CleverCms_Block_Cms_Page_Menu extends JR_CleverCms_Block_Catalog_Navigation
{

    protected function _toHtml()
    {
        $html = '';
        if ($identifier = $this->getIdentifier()) {
            $storeId = Mage::app()->getStore()->getId();
            if ($pageId = Mage::getResourceModel('cms/page')->checkIdentifier($identifier, $storeId)) {
                $page = Mage::getModel('cms/page')->load($pageId);
                $html = $this->_renderCmsMenuItemHtml($page);
            }
        }
        return $html;
    }

    /**
     * Render CMS Page Menu
     *
     * @param Mage_Cms_Model_Page $page
     * @param int Nesting level number
     * @param boolean Whether or not this item is last, affects list item class
     * @param boolean Whether or not this item is first, affects list item class
     * @param boolean Whether or not this item is outermost, affects list item class
     * @param string Extra class of outermost list items
     * @param string If specified wraps children list in div with this class
     * @param boolean Whether or not to add on* attributes to list item
     * @return string
     */
    protected function _renderCmsMenuItemHtml($page, $level = 1, $isLast = false, $isFirst = false,
        $isOutermost = true, $outermostItemClass = 'block-account', $childrenWrapClass = 'block-content', $noEventAttributes = false)
    {
        if (! $this->_isAllowed($page)) {
            return '';
        }
        $html = array();

        // get all children
        $children = $page->getChildren();
        if (Mage::helper('cms/page')->isPermissionsEnabled($this->getStore())) {
            $children->addPermissionsFilter($this->getCustomerGroupId());
        }
        $childrenCount = $children->count();
        $hasChildren = ($children && $childrenCount);

        // select active children
        $activeChildren = array();
        foreach ($children as $child) {
            if ($child->getIsActive() && $child->getIncludeInMenu()) {
                $activeChildren[] = $child;
            }
        }
        $activeChildrenCount = count($activeChildren);
        $hasActiveChildren = ($activeChildrenCount > 0);

        // prepare list item html classes
        $classes = array();
        $classes[] = 'level'.$level;
        // note: not dealing with the 'nav-' class at the moment
        if ($this->isCmsPageActive($page)) {
            $classes[] = 'current';
        }
        $linkClass = '';
        if ($isOutermost && $outermostItemClass) {
            $classes[] = $outermostItemClass;
            $linkClass = ' class="'.$outermostItemClass.'"';
        }
        if ($isFirst) {
            $classes[] = 'first';
        }
        if ($isLast) {
            $classes[] = 'last';
        }
        if ($hasActiveChildren) {
            $classes[] = 'parent';
        }

        // prepare list item attributes
        $attributes = array();
        if (count($classes) > 0) {
            $attributes['class'] = implode(' ', $classes);
        }
        if ($hasActiveChildren && !$noEventAttributes) {
             $attributes['onmouseover'] = 'toggleMenu(this,1)';
             $attributes['onmouseout'] = 'toggleMenu(this,0)';
        }

        // assemble list item with attributes
        if ($isOutermost) {
            if ($page->getId()==$this->getCurrentCmsPage()->getId()) {
                $html[] = '<div '.$linkClass.'><div class="block-title"><strong><span>'. $this->escapeHtml($page->getTitle()) .'</span></strong></div>';
            } else {
                $html[] = '<div '.$linkClass.'><div class="block-title"><strong>'.'<a href="'. $page->getUrl() . '"/><span>'. $this->escapeHtml($page->getTitle()) .'</span></a></strong></div>';
            }
        } else {
            $htmlLi = '<li';
            foreach ($attributes as $attrName => $attrValue) {
                $htmlLi .= ' ' . $attrName . '="' . str_replace('"', '\"', $attrValue) . '"';
            }
            $htmlLi .= '>';
            $html[] = $htmlLi;
            if ($this->isCmsPageActive($page)) {
                $html[] .= '<strong>'. $this->escapeHtml($page->getTitle()) .'</strong>';
            } else {
                $html[] .= '<a href="'. $page->getUrl() . "/" .'"'.$linkClass.'>';
                $html[] .= '<span>'. $this->escapeHtml($page->getTitle()) .'</span>';
                $html[] .= '</a>';
            }
        }

        // render children
        $htmlChildren = '';
        $j = 0;
        foreach ($activeChildren as $child) {
            $htmlChildren .= $this->_renderCmsMenuItemHtml(
                $child,
                ($level + 1),
                ($j == $activeChildrenCount - 1),  // is last
                ($j == 0),                         // is first
                false,                             // is outermost
                $outermostItemClass,
                $childrenWrapClass,
                $noEventAttributes
            );
            $j++;
        }

        if (!empty($htmlChildren)) {
            if ($childrenWrapClass) {
                $html[] = '<div class="' . $childrenWrapClass . '">';
            }
            $html[] = '<ul class="level'. $level .'">';
            $html[] = $htmlChildren;
            $html[] = '</ul>';
            if ($childrenWrapClass) {
                $html[] = '</div>';
            }
        }

        $html[] = $isOutermost ? '</div>' : '</li>';

        $html = implode("\n", $html);
        return $html;
    }
}