/Admin/Lib/ORG/Page.class.php

<?php

// +----------------------------------------------------------------------

// | ThinkPHP [ WE CAN DO IT JUST THINK IT ]

// +----------------------------------------------------------------------

// | Copyright (c) 2009 http://thinkphp.cn All rights reserved.

// +----------------------------------------------------------------------

// | Licensed ( http://www.apache.org/licenses/LICENSE-2.0 )

// +----------------------------------------------------------------------

// | Author: liu21st <liu21st@gmail.com>

// +----------------------------------------------------------------------

// $Id: Page.class.php 3 2011-02-03 16:24:00Z nicholasinlove1986@gmail.com $



// +----------------------------------------------------------------------

// | @author nicholas <nicholasinlove@126.com>

// +----------------------------------------------------------------------

// | @link ( http://www.yurnero.net )

// +----------------------------------------------------------------------

// | ??????????? $rollPage???????

// +----------------------------------------------------------------------

// | ????&nbsp;???? ????$upPage,$downPage???

// +----------------------------------------------------------------------



class Page extends Think {

    // ????

    public $firstRow	;

    // ????????

    public $listRows	;

    // ??????????

    public $parameter  ;

    // ??????

    protected $totalPages  ;

    // ???

    protected $totalRows  ;

    // ????

    protected $nowPage    ;

    // ????????

    protected $coolPages   ;

    // ??????????

    protected $rollPage   ;

	// ??????

    protected $config  =    array('header'=>'records','prev'=>'‹‹','next'=>'››','first'=>'1...','last'=>'????','theme'=>'Total %totalRow% %header%, Pages: %nowPage%/%totalPage%, %first% %upPage% %linkPage% %downPage% %end% %input%'); //?? %select%  %prePage% ?$rollPage? %nextPage% ?$rollPage? ???



    /**

     +----------------------------------------------------------

     * ????

     +----------------------------------------------------------

     * @access public

     +----------------------------------------------------------

     * @param array $totalRows  ?????

     * @param array $listRows  ???????

     * @param array $parameter  ???????

     +----------------------------------------------------------

     */

    public function __construct($totalRows,$listRows,$parameter='') {

        $this->totalRows = $totalRows;

        $this->parameter = $parameter;

        $this->rollPage = C('PAGE_ROLLPAGE');

        $this->listRows = !empty($listRows)?$listRows:C('PAGE_LISTROWS');

        $this->totalPages = ceil($this->totalRows/$this->listRows);     //???

        $this->coolPages  = ceil($this->totalPages/$this->rollPage);

        $this->nowPage  = !empty($_GET[C('VAR_PAGE')])?$_GET[C('VAR_PAGE')]:1;

        if(!empty($this->totalPages) && $this->nowPage>$this->totalPages) {

            $this->nowPage = $this->totalPages;

        }

        $this->firstRow = $this->listRows*($this->nowPage-1);

    }



    public function setConfig($name,$value) {

        if(isset($this->config[$name])) {

            $this->config[$name]    =   $value;

        }

    }



    /**

     +----------------------------------------------------------

     * ??????

     +----------------------------------------------------------

     * @access public

     +----------------------------------------------------------

     */

    public function show() {

        if(0 == $this->totalRows) return '';

        $p = C('VAR_PAGE');

        $nowCoolPage      = ceil($this->nowPage/$this->rollPage);

        $url  =  $_SERVER['REQUEST_URI'].(strpos($_SERVER['REQUEST_URI'],'?')?'':"?").$this->parameter;

        $parse = parse_url($url);

        if(isset($parse['query'])) {

            parse_str($parse['query'],$params);

            unset($params[$p]);

            $url   =  $parse['path'].'?'.http_build_query($params);

        }

        //???????

        $upRow   = $this->nowPage-1;

        $downRow = $this->nowPage+1;

        if ($upRow>0){

            $upPage="<a href='".$url."&".$p."=$upRow'>".$this->config['prev']."</a>";

        }else{

            //$upPage="";

			$upPage="<span class='disabled'>".$this->config['prev']."</span>";

        }



        if ($downRow <= $this->totalPages){

            $downPage="<a href='".$url."&".$p."=$downRow'>".$this->config['next']."</a>";

        }else{

            //$downPage="";

			$downPage="<span class='disabled'>".$this->config['next']."</span>";

        }

        // << < > >>

        if($nowCoolPage == 1){

            $theFirst = "";

            $prePage = "";

        }else{

            $preRow =  $this->nowPage-$this->rollPage;

            $prePage = "<a href='".$url."&".$p."=$preRow' >?".$this->rollPage."?</a>";

        }

		//??3?

        if($this->nowPage - 3 > 0){

				  $theFirst = "<a href='".$url."&".$p."=1' >".$this->config['first']."</a>";

        }

        if($nowCoolPage == $this->coolPages){

            $nextPage = "";

            $theEnd="";

        }else{

            $nextRow = $this->nowPage+$this->rollPage;

            $theEndRow = $this->totalPages;

            $nextPage = "<a href='".$url."&".$p."=$nextRow' >?".$this->rollPage."?/a>";

            $theEnd = "<a href='".$url."&".$p."=$theEndRow' >...".$theEndRow."</a>";

        }

        // 1 2 3 4 5

        $linkPage = "";

		

		//??????

		$init = 1;//?????

		$max = $this->totalPages;//?????

		$pageoffset = ($this->rollPage-1)/2;//?????????

		

		//??????????????

		if($this->totalPages>$this->rollPage){

			//????????????

			if($this->nowPage<=$pageoffset){

				$init=1;

				$max = $this->rollPage;

			}else{//??????????

			//????????????????

				if($this->nowPage+$pageoffset>=$this->totalPages+1){

					$init = $this->totalPages-$this->rollPage+1;

				}else{

				//???????????

					$init = $this->nowPage-$pageoffset;

					$max = $this->nowPage+$pageoffset;

				}

			}

		}

		//echo $init.';'.$max;

        for($i=$init;$i<=$max;$i++){

            $page=$this->nowPage;

			if($i==$page){

				$linkPage .= "<span class='current'>".$page."</span>";

			} else {

				$linkPage .= "<a href='".$url."&".$p."=$i'>".$i."</a>";

			}

        }  

		/*???*/     

        $input = 'Go <input style="width:20px; padding:0;font:10px Verdana;background:#aaa;" onkeypress="var keyChar=event.keyCode;if(keyChar == 13){location.href=\''.$url.'&'.$p.'=\'+this.value}" />';

		/*???*/

		$select.='Go&nbsp;&nbsp;<select name="topage" size="1" onchange="window.location.href=\''.$url.'&'.$p.'=\'+this.value">\n';

		for($i=1;$i<=$this->totalPages;$i++){

			if($i==$page) $select.="<option value='".$url."&".$p."=$i' selected>".$i."</option>\n";

			else $select.="<option value='".$url."&".$p."=$i'>".$i."</option>\n";

		}

		$select.="</select>";

        

        $pageStr     =     str_replace(

            array('%header%','%nowPage%','%totalRow%','%totalPage%','%upPage%','%downPage%','%first%','%prePage%','%linkPage%','%nextPage%','%end%','%input%','%select%'),

            array($this->config['header'],$this->nowPage,$this->totalRows,$this->totalPages,$upPage,$downPage,$theFirst,$prePage,$linkPage,$nextPage,$theEnd,$input,$select),$this->config['theme']);

        return $pageStr;

    }

}



?>