Magento Custom Dashboard Tab - Grids.php

<?php

//Path : app\code\local\KS\Dashboard\Block\Adminhtml\Dashboard\Grids.php

class KS_Dashboard_Block_Adminhtml_Dashboard_Grids extends Mage_Adminhtml_Block_Widget_Tabs
{
    public function __construct()
    {
        parent::__construct();
        $this->setId('grid_tab');
        $this->setDestElementId('grid_tab_content');
        $this->setTemplate('widget/tabshoriz.phtml');
    }

    /**
     * Prepare layout for dashboard bottom tabs
     *
     * To load block statically:
     *     1) content must be generated
     *     2) url should not be specified
     *     3) class should not be 'ajax'
     * To load with ajax:
     *     1) do not load content
     *     2) specify url (BE CAREFUL)
     *     3) specify class 'ajax'
     *
     * @return Mage_Adminhtml_Block_Dashboard_Grids
     */
    protected function _prepareLayout()
    {
        // load this active tab statically
        $this->addTab('ordered_products', array(
            'label'     => $this->__('Bestsellers'),
            'content'   => $this->getLayout()->createBlock('adminhtml/dashboard_tab_products_ordered')->toHtml(),
            'active'    => true
        ));

        // load other tabs with ajax
        $this->addTab('reviewed_products', array(
            'label'     => $this->__('Most Viewed Products'),
            'url'       => $this->getUrl('*/*/productsViewed', array('_current'=>true)),
            'class'     => 'ajax'
        ));

        $this->addTab('new_customers', array(
            'label'     => $this->__('New Customers'),
            'url'       => $this->getUrl('*/*/customersNewest', array('_current'=>true)),
            'class'     => 'ajax'
        ));

        $this->addTab('customers', array(
            'label'     => $this->__('Customers'),
            'url'       => $this->getUrl('*/*/customersMost', array('_current'=>true)),
            'class'     => 'ajax'
        ));

        //New Members Tab
        $this->addTab('new_members', array(
            'label'     => $this->__('New Members'),
            'url'       => $this->getUrl('*/*/membersNew', array('_current'=>true)),
            'class'     => 'ajax'
        ));

        //All Members Tab
        $this->addTab('members', array(
            'label'     => $this->__('All Members'),
            'url'       => $this->getUrl('*/*/membersAll', array('_current'=>true)),
            'class'     => 'ajax'
        ));

        return parent::_prepareLayout();
    }
}