<?php
class AsiaConnect_FreeCms_Block_Cms_Block_Grid extends Mage_Adminhtml_Block_Widget_Grid
{

    public function __construct()
    {
        parent::__construct();
        $this->setId('cmsBlockGrid');
        $this->setDefaultSort('block_identifier');
        $this->setDefaultDir('ASC');
    }

    protected function _prepareCollection()
    {
        $collection = Mage::getModel('cms/block')->getCollection();
		$filters = array('sidebar-right-top',
						'sidebar-right-bottom',
						'sidebar-left-top',
						'sidebar-left-bottom',
						'content-top',
						'menu-top',
						'menu-bottom',
						'page-bottom',
						'catalog-sidebar-right-top',
						'catalog-sidebar-right-bottom',
						'catalog-sidebar-left-top',
						'catalog-sidebar-left-bottom',
						'catalog-content-top',
						'catalog-menu-top',
						'catalog-menu-bottom',
						'catalog-page-bottom',
						'product-sidebar-right-top',
						'product-sidebar-right-bottom',
						'product-sidebar-left-top',
						'product-content-top',
						'product-menu-top',
						'product-menu-bottom',
						'product-page-bottom',
						'product-sidebar-left-bottom',
						'customer-content-top',
						'cart-content-top');

		$collection->addFieldToFilter('identifier' , $filters);
        /* @var $collection Mage_Cms_Model_Mysql4_Block_Collection */
        $this->setCollection($collection);
        return parent::_prepareCollection();
    }

    protected function _prepareColumns()
    {
        $baseUrl = $this->getUrl();

        $this->addColumn('title', array(
            'header'    => Mage::helper('cms')->__('Title'),
            'align'     => 'left',
            'index'     => 'title',
        ));

        $this->addColumn('identifier', array(
            'header'    => Mage::helper('cms')->__('Position'),
            'align'     => 'left',
            'index'     => 'identifier'
        ));

        if (!Mage::app()->isSingleStoreMode()) {
            $this->addColumn('store_id', array(
                'header'        => Mage::helper('cms')->__('Store View'),
                'index'         => 'store_id',
                'type'          => 'store',
                'store_all'     => true,
                'store_view'    => true,
                'sortable'      => false,
                'filter_condition_callback'
                                => array($this, '_filterStoreCondition'),
            ));
        }

        $this->addColumn('is_active', array(
            'header'    => Mage::helper('cms')->__('Status'),
            'index'     => 'is_active',
            'type'      => 'options',
            'options'   => array(
                0 => Mage::helper('cms')->__('Disabled'),
                1 => Mage::helper('cms')->__('Enabled')
            ),
        ));

        $this->addColumn('creation_time', array(
            'header'    => Mage::helper('cms')->__('Date Created'),
            'index'     => 'creation_time',
            'type'      => 'datetime',
        ));

        $this->addColumn('update_time', array(
            'header'    => Mage::helper('cms')->__('Last Modified'),
            'index'     => 'update_time',
            'type'      => 'datetime',
        ));

        return parent::_prepareColumns();
    }

    protected function _afterLoadCollection()
    {
        $this->getCollection()->walk('afterLoad');
        parent::_afterLoadCollection();
    }

    protected function _filterStoreCondition($collection, $column)
    {
        if (!$value = $column->getFilter()->getValue()) {
            return;
        }

        $this->getCollection()->addStoreFilter($value);
    }

    /**
     * Row click url
     *
     * @return string
     */
    public function getRowUrl($row)
    {
        return $this->getUrl('*/*/edit', array('block_id' => $row->getId()));
    }

}