<?php
// +----------------------------------------------------------------------
// | ThinkPHP [ WE CAN DO IT JUST THINK IT ]
// +----------------------------------------------------------------------
// | Copyright (c) 2006-2014 http://thinkphp.cn All rights reserved.
// +----------------------------------------------------------------------
// | Licensed ( http://www.apache.org/licenses/LICENSE-2.0 )
// +----------------------------------------------------------------------
// | Author: 麦当苗儿 <zuojiazi@vip.qq.com> <http://www.zjzit.cn>
// +----------------------------------------------------------------------
namespace Think;
class customPage{
 public $firstRow; // 起始行数
 public $listRows; // 列表每页显示行数
 public $parameter; // 分页跳转时要带的参数
 public $totalRows; // 总行数
 public $totalPages; // 分页总页面数
 public $rollPage = 6;// 分页栏每页显示的页数
 public $lastSuffix = true; // 最后一页是否显示总页数
 private $p  = 'p'; //分页参数名
 private $url  = ''; //当前链接URL
 private $nowPage = 1;
 // 分页显示定制
 private $config = array(
  'header' => '<span class="rows">共 %TOTAL_ROW% 条记录</span>',
  'prev' => '上一页',
  'next' => '下一页',
  'first' => '1...',
  'last' => '...%TOTAL_PAGE%',
  'theme' => '%FIRST% %UP_PAGE% %LINK_PAGE% %DOWN_PAGE% %END%',
 );
 /**
  * 架构函数
  * @param array $totalRows 总的记录数
  * @param array $listRows 每页显示记录数
  * @param array $parameter 分页跳转的参数
  */
 public function __construct($totalRows, $listRows=20, $parameter = array()) {
  C('VAR_PAGE') && $this->p = C('VAR_PAGE'); //设置分页参数名称
  /* 基础设置 */
  $this->totalRows = $totalRows; //设置总记录数
  $this->listRows = $listRows; //设置每页显示行数
  $this->parameter = empty($parameter) ? $_GET : $parameter;
  $this->nowPage = empty($_GET[$this->p]) ? 1 : intval($_GET[$this->p]);
  $this->totalPages = ceil($this->totalRows / $this->listRows); //总页数
  if ($this->nowPage>$this->totalPages) {
   $this->nowPage = $this->totalPages ;
  }
  $this->nowPage = $this->nowPage>0 ? $this->nowPage : 1;
  $this->firstRow = $this->listRows * ($this->nowPage - 1);
 }
 /**
  * 定制分页链接设置
  * @param string $name 设置名称
  * @param string $value 设置值
  */
 public function setConfig($name,$value) {
  if(isset($this->config[$name])) {
   $this->config[$name] = $value;
  }
 }
 /**
  * 生成链接URL
  * @param integer $page 页码
  * @return string
  */
 private function url($page){
  return str_replace(urlencode('[PAGE]'), $page, $this->url);
 }
 /**
  * 组装分页链接
  * @return string
  */
 public function show() {
  if(0 == $this->totalRows) return '';
  /* 生成URL */
  $this->parameter[$this->p] = '[PAGE]';
  $this->url = U(ACTION_NAME, $this->parameter);
  /* 计算分页信息 */
  if(!empty($this->totalPages) && $this->nowPage > $this->totalPages) {
   $this->nowPage = $this->totalPages;
  }
  /* 计算分页临时变量 */
  $now_cool_page  = $this->rollPage/2;
  $now_cool_page_ceil = ceil($now_cool_page);
  $this->lastSuffix && $this->config['last'] = $this->totalPages;
  //上一页
  $up_row = $this->nowPage - 1;
  $up_page = $up_row > 0 ? '<a class="shang" id="'.$up_row.'"href="javascript:;" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >上一页</a>' : '';
  //下一页
  $down_row = $this->nowPage + 1;
  $down_page = ($down_row <= $this->totalPages) ? '<a class="xia" id="'.$down_row.'" href="javascript:;" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >下一页</a>' : '';
  //第一页
  $the_first = '';
  if($this->totalPages > $this->rollPage && ($this->nowPage - $now_cool_page) >= 1){
   $the_first = '<a class="first" id="1" href="javascript:;" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >第一页</a>';
  }
  //最后一页
  $the_end = '';
  //if($this->totalPages > $this->rollPage && ($this->nowPage + $now_cool_page) < $this->totalPages){
  if($this->totalPages > $this->rollPage && ($this->nowPage + $now_cool_page) < $this->totalPages){
   $the_end = '<a class="end" id="'.$this->totalRows.'" href="javascript:;" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >最后一页</a>';
  }
  for($i = 1; $i <= $this->rollPage; $i++){
    if(($this->nowPage - $now_cool_page) <= 0 ){
     $page = $i;
    }elseif(($this->nowPage + $now_cool_page - 1) >= $this->totalPages){
     $page = $this->totalPages - $this->rollPage + $i;
    }else{
     $page = $this->nowPage - $now_cool_page_ceil + $i;
    }
    if($page > 0 && $page != $this->nowPage){
     if($page <= $this->totalPages){
      $link_page .= ('<li id="'.$page.'">'.$page.'</li>');
     }else{
      break;
     }
    }else{
     if($page > 0 && $this->totalPages != 1){
      $link_page .= ('<li id="now" id="'.$page.'" class="current">'.$page.'</li>');
     }
    }
  }
  if (!empty($link_page)) $link_page = '<ul id="list">'.$link_page.'</ul>';
  //替换分页内容
  $page_str = str_replace(
   array('%HEADER%', '%NOW_PAGE%', '%UP_PAGE%', '%DOWN_PAGE%', '%FIRST%', '%LINK_PAGE%', '%END%', '%TOTAL_ROW%', '%TOTAL_PAGE%'),
   array($this->config['header'], $this->nowPage, $up_page, $down_page, $the_first, $link_page, $the_end, $this->totalRows, $this->totalPages),
   $this->config['theme']);
  $page_str = trim($page_str);
  if(!empty($page_str)) $page_str .= '<p></p><input value="" type="text"><a href="javascript:;" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" id="go" class="go">跳转</a>';
  return $page_str;
 }
}