CGridView keep state of page and sort. Follow @yiiframework

<?php
/**
 * Created by JetBrains PhpStorm.
 * User: yiqing
 * Date: 12-2-16
 * Time: 上午11:16
 * To change this template use File | Settings | File Templates.
 */
Yii::import('ext.bootstrap.widgets.BootGridView');
class EBootGridView extends BootGridView
{
 
    protected $rowSetKeys = array();
 
    public $rowIdPrefix = 'gr_';
 
    public function init()
    {
        parent::init();
 
        $this->rowSetKeys = $this->dataProvider->getKeys();
    }
 
    /**
     * @param $row
     * ad row id property to the generated tr element
     */
    public function renderTableRow($row)
    {
        $rowId = $this->rowIdPrefix . $this->rowSetKeys[$row];
 
        if ($this->rowCssClassExpression !== null) {
            $data = $this->dataProvider->data[$row];
            echo '<tr class="' . $this->evaluateExpression($this->rowCssClassExpression, array('row' => $row, 'data' => $data)) . '" id="' . $rowId . '">';
        }
        else if (is_array($this->rowCssClass) && ($n = count($this->rowCssClass)) > 0)
            echo '<tr class="' . $this->rowCssClass[$row % $n] . '" id="' . $rowId . '">';
        else
            echo '<tr id="' . $rowId . '">';
        foreach ($this->columns as $column)
            $column->renderDataCell($row);
        echo "</tr>\n";
    }
//----------------------------<总是在template中可用listPager>---------------------------------------
    /**
     * @var array
     * config  for the CListPager
     */
    public $listPager = array();
 
    /**
     * @return mixed
     *  using  EBootGridView::listPager config to render the listPager
     */
    public function renderListPager()
    {
        if (!$this->enablePagination)
            return;
 
        $pager = array();
        $class = 'CListPager';
        if (is_array($this->listPager)) {
            $pager = $this->listPager;
            if (isset($pager['class'])) {
                unset($pager['class']);
            }
        }else{
            throw new CException('the listPager must be an array ,which is a config array for the Class CLinkPager');
        }
        $pager['pages'] = $this->dataProvider->getPagination();
        if(!isset($pager['htmlOptions']) || ! isset($pager['htmlOptions']['onchange'])){
           //if  not  set the onchange ，the default behavior is  ajax pagination
           $pager['htmlOptions']['onchange'] = "if(this.value!=''){\$.fn.yiiGridView.update('{$this->getId()}',{url:this.value}); /*window.location=this.value;*/};";
        }
        if ($pager['pages']->getPageCount() > 1) {
            //echo '<div class="' . $this->pagerCssClass . '">';
            $this->widget($class, $pager);
            //echo '</div>';
        }else{
            $this->widget($class, $pager);
        }
    }
    //----------------------------<总是在template中可用listPager/>-----------------------------------------
 
    //.........<允许在模板中使用epageSize 扩展>.................................................
 
     public $ePageSize = array();
 
    /**
     * @return mixed
     *  using  EBootGridView::listPager config to render the listPager
     * ------------------------------------------------
     * 有bug  原因未知 待查.....
     * ------------------------------------------------
     */
    public function renderEPageSize()
    {
        if(!$this->enablePagination)
            return;
 
        $widget = array();
        $class = 'ext.PageSize.EPageSize';
 
        if(is_string($this->ePageSize)){
            $class = $this->ePageSize ;
        } else if(is_array($this->ePageSize)){
            $widget = $this->ePageSize;
            if(isset($widget['class']))
            {
                $class = $widget['class'];
                unset($widget['class']);
            }
        }
        $widget['gridViewId'] = $this->getId();
        $widget['pageSize'] = Yii::app()->request->getParam('pageSize',null);
 
        if(! isset($widget['defaultPageSize'])){
            $widget['defaultPageSize'] = 10;
        }
        if(! isset($widget['pageSizeOptions'])){
          $widget['pageSizeOptions'] =  array(5=>5, 10=>10, 25=>25, 50=>50, 75=>75, 100=>100);
        }
        /*
        $this->widget('ext.PageSize.EPageSize', array(
            'listViewId' => '<?php echo $this->class2id($this->modelClass); ?>-grid',
            'pageSize' => Yii::app()->request->getParam('pageSize',null),
            'defaultPageSize' =>  10 ,   // may use this :  Yii::app()->params['defaultPageSize'],
            'pageSizeOptions'=> array(5=>5, 10=>10, 25=>25, 50=>50, 75=>75, 100=>100), // you can config it in main.php under the config dir . Yii::app()->params['pageSizeOptions'],// Optional, you can use with the widget default
        ));
        */
 
        $pagination = $this->dataProvider->getPagination();
        if($pagination->getPageCount()>1){
            $this->widget($class,$widget);
        }
    }
 
    //.........<允许在模板中使用epageSize 扩展/>................................................
    //----------<松弛模板 在模板中可用用上面配置到的键 >--------------------------------------------------------------------------------------------
 
    /**
     * @var array
     * -----------------------
     * 参考CButtonColumn::buttons
     * -----------------------
     */
    public $templates = array();
 
    /**
     * Renders a section.
     * This method is invoked by {@link renderContent} for every placeholder found in {@link template}.
     * It should return the rendering result that would replace the placeholder.
     * @param array $matches the matches, where $matches[0] represents the whole placeholder,
     * while $matches[1] contains the name of the matched placeholder.
     * @return string the rendering result of the section
     * ------------------------------------------------------------
     * 拷贝自CBaseListView
     * -------------------------------------------------------------
     */
    protected function renderSection($matches)
    {
            $method='render'.$matches[1];
            if(method_exists($this,$method))
            {
                $this->$method();
                $html=ob_get_contents();
                ob_clean();
                return $html;
            }elseif(! empty($this->templates) && is_array($this->templates)){
               $widgetTemplateName = $matches[1]; //template Token
                if(isset($this->templates[$widgetTemplateName])){
                  $widgetConfig =   $this->templates[$widgetTemplateName];
                    return $this->_renderWidgetTemplate($widgetConfig);
                }
            }
            return $matches[0];
    }
 
  /**
   * @param array $widgetConfig
   * @return mixed
   * @throws CException
   */
    protected function _renderWidgetTemplate($widgetConfig=array()){
       if(isset($widgetConfig['class'])){
           $widgetClass = $widgetConfig['class'];
           unset($widgetConfig['class']);
          return $this->widget($widgetClass,$widgetConfig,true);
       }else{
           throw  new CException('you must specify the widget \'s class for using the templates  ');
       }
    }
    //----------<松弛模板 在模板中可用用上面配置到的键/ >--------------------------------------------------------------------------------------------
}