//====================================================
//FileName:?page.class.php
//Summary:?系統分頁配置
//====================================================
class?page?{
/**
*?config?,public
*/
var?$page_name="pageNum";//page標簽，用來控制url頁。比如說xxx.php?PB_page=2中的PB_page
var?$next_page='>';//下壹頁
var?$pre_page='<';//上壹頁
var?$first_page='First';//首頁
var?$last_page='Last';//尾頁
var?$pre_bar='<<';//上壹分頁條
var?$next_bar='>>';//下壹分頁條
var?$format_left='?';
var?$format_right='?';
var?$is_ajax=False;//是否支持AJAX分頁模式?
/**
*?private
*
*/?
var?$pagebarnum=10;//控制記錄條的個數。
var?$totalpage=0;//總頁數
var?$ajax_action_name='';//AJAX動作名
var?$nowindex=1;//當前頁
var?$url="";//url地址頭
var?$offset=0;
/**
*?constructor構造函數
*
*?@param?array?$array['total'],$array['perpage'],$array['nowindex'],$array['url'],$array['ajax']...
*/
function?page($array){
if(is_array($array)){
if(!array_key_exists('total',$array))$this->error(__FUNCTION__,'need?a?param?of?total');
$total=intval($array['total']);
$perpage=(array_key_exists('perpage',$array))?intval($array['perpage']):10;
$nowindex=(array_key_exists('nowindex',$array))?intval($array['nowindex']):'';
$url=(array_key_exists('url',$array))?$array['url']:'';
}else{
$total=$array;
$perpage=10;
$nowindex='';
$url='';
}
if((!is_int($total))||($total<0))$this->error(__FUNCTION__,$total.'?is?not?a?positive?integer!');
if((!is_int($perpage))||($perpage<=0))$this->error(__FUNCTION__,$perpage.'?is?not?a?positive?integer!');
if(!empty($array['page_name']))$this->set('page_name',$array['page_name']);//設置pagename
$this->_set_nowindex($nowindex);//設置當前頁
$this->_set_url($url);//設置鏈接地址
$this->totalpage=ceil($total/$perpage);
$this->offset=($this->nowindex-1)*$this->perpage;
if(!empty($array['ajax']))$this->open_ajax($array['ajax']);//打開AJAX模式
}
/**
*?設定類中指定變量名的值，如果改變量不屬於這個類，將throw壹個exception
*
*?@param?string?$var
*?@param?string?$value
*/
function?set($var,$value){
if(in_array($var,get_object_vars($this)))
$this->$var=$value;
else?{
$this->error(__FUNCTION__,$var."?does?not?belong?to?PB_Page!");
}
}
/**
*?打開倒AJAX模式
*
*?@param?string?$action?默認ajax觸發的動作。
*/
function?open_ajax($action){
$this->is_ajax=true;
$this->ajax_action_name=$action;
}
/**
*?獲取顯示"下壹頁"的代碼
*?
*?@param?string?$style
*?@return?string
*/
function?next_page($style=''){
if($this->nowindex<$this->totalpage){
return?"<li>".$this->_get_link($this->_get_url($this->nowindex+1),$this->next_page,$style)."</li>";
}
return?"<li?class='active'><span>".$this->next_page."</span></li>";
}
/**
*?獲取顯示“上壹頁”的代碼
*
*?@param?string?$style
*?@return?string
*/
function?pre_page($style=''){
if($this->nowindex>1){
return?"<li>".$this->_get_link($this->_get_url($this->nowindex-1),$this->pre_page,$style)."</li>";
}
return?"<li?class='active'><span>".$this->pre_page."</span></li>";
}
/**
*?獲取顯示“首頁”的代碼
*
*?@return?string
*/
function?first_page($style=''){
if($this->nowindex==1){
return?"<li?class='active'><span>".$this->first_page."</span></li>";
}
return?"<li>".$this->_get_link($this->_get_url(1),$this->first_page,$style)."</li>";
}
/**
*?獲取顯示“尾頁”的代碼
*
*?@return?string
*/
function?last_page($style='lastpage'){
if($this->nowindex==$this->totalpage){
return?"<li?class='active'><span>".$this->last_page."</span></li>";
}
return?"<li>".$this->_get_link($this->_get_url($this->totalpage),$this->last_page,$style)."</li>";
}
function?nowbar($style='',$nowindex_style='current'){
$plus=ceil($this->pagebarnum/2);
if($this->pagebarnum-$plus+$this->nowindex>$this->totalpage)$plus=($this->pagebarnum-$this->totalpage+$this->nowindex);
$begin=$this->nowindex-$plus+1;
$begin=($begin>=1)?$begin:1;
$return='';
for($i=$begin;$i<$begin+$this->pagebarnum;$i++)
{
if($i<=$this->totalpage){
if($i!=$this->nowindex)
$return.=$this->_get_text("<li>".$this->_get_link($this->_get_url($i),$i,$style)."</li>");
else?
$return.=$this->_get_text("<li?class='active'><span?class='".$nowindex_style."'>".$i."</span></li>");
}else{
break;
}
$return.="\n";
}
unset($begin);
return?$return;
}
/**
*?獲取顯示跳轉按鈕的代碼
*
*?@return?string
*/
function?select(){
$return="<select?name=\"jumpMenu\"?id=\"jumpMenu\"?onchange=\"MM_jumpMenu('window',this,0)\">";
for($i=1;$i<=$this->totalpage;$i++)
{
if($i==$this->nowindex){
if(strip_tags($_GET[cid],'')==""){
$return.="<option?value=\"?"?.$this->page_name?.?"=".$i."\"?selected>".$i."</option>";
}else{
$return.="<option?value=\"?cid=".strip_tags($_GET[cid],'')."&"?.$this->page_name?.?"=".$i."\"?selected>".$i."</option>";
}
}else{
if(strip_tags($_GET[cid],'')==""){
$return.="<option?value=\"?"?.$this->page_name?.?"=".$i."\">".$i."</option>";
}else{
$return.="<option?value=\"?cid=".strip_tags($_GET[cid],'')."&"?.$this->page_name?.?"=".$i."\"?>".$i."</option>";
}
}
}
unset($i);
$return.='</select>';
return?$return;
}
/**
*?獲取mysql?語句中limit需要的值
*
*?@return?string
*/
function?offset(){
return?$this->offset;
}
/**
*?控制分頁顯示風格（妳可以增加相應的風格）
*
*?@param?int?$mode
*?@return?string
*/
function?show($mode=1){
switch?($mode)
{
case?'1':
$this->first_page='首頁';
$this->last_page='尾頁';
$this->next_page='下壹頁';
$this->pre_page='上壹頁';
return?$this->first_page()."?".$this->pre_page()."?".$this->nowbar()."?".$this->next_page()."?".$this->last_page();
break;
case?'2':
$this->next_page='下壹頁';
$this->pre_page='上壹頁';
$this->first_page='首頁';
$this->last_page='尾頁';
return?$this->first_page().$this->pre_page().'[第'.$this->nowindex.'頁]'.$this->next_page().$this->last_page().'第'.$this->select().'頁';
break;
case?'3':
$this->next_page='下壹頁';
$this->pre_page='上壹頁';
$this->first_page='首頁';
$this->last_page='尾頁';
return?$this->first_page().$this->pre_page().$this->next_page().$this->last_page();
break;
case?'4':
$this->next_page='下壹頁';
$this->pre_page='上壹頁';
return?$this->pre_page().$this->nowbar().$this->next_page();
break;
case?'5':
return?$this->pre_bar().$this->pre_page().$this->nowbar().$this->next_page().$this->next_bar();
break;
}
}
/*----------------private?function?(私有方法)-----------------------------------------------------------*/
/**
*?設置url頭地址
*?@param:?String?$url
*?@return?boolean
*/
function?_set_url($url=""){
if(!empty($url)){
//手動設置
$this->url=$url.((stristr($url,'?'))?'&':'?').$this->page_name."=";
}else{
//自動獲取
if(empty($_SERVER['QUERY_STRING'])){
//不存在QUERY_STRING時
$this->url=$_SERVER['REQUEST_URI']."?".$this->page_name."=";
}else{
//
if(stristr($_SERVER['QUERY_STRING'],$this->page_name.'=')){
//地址存在頁面參數
$this->url=str_replace($this->page_name.'='.$this->nowindex,'',$_SERVER['REQUEST_URI']);
$last=$this->url[strlen($this->url)-1];
if($last=='?'||$last=='&'){
$this->url.=$this->page_name."=";}else{
$this->url.='&'.$this->page_name."=";}
}else{
//
$this->url=$_SERVER['REQUEST_URI'].'&'.$this->page_name.'=';
}?
}
}
}
/**
*?設置當前頁面
*
*/
function?_set_nowindex($nowindex){
if(empty($nowindex)){
//系統獲取
if(isset($_GET[$this->page_name])){
$this->nowindex=intval($_GET[$this->page_name]);
}
}else{
//手動設置
$this->nowindex=intval($nowindex);
}
}
/**
*?為指定的頁面返回地址值
*
*?@param?int?$pageno
*?@return?string?$url
*/
function?_get_url($pageno=1){
return?$this->url.$pageno;
}
/**
*?獲取分頁顯示文字，比如說默認情況下_get_text('<a?href="">1</a>')將返回[<a?href="">1</a>]
*
*?@param?String?$str
*?@return?string?$url
*/?
function?_get_text($str){
return?$this->format_left.$str.$this->format_right;
}
/**
*?獲取鏈接地址
*/
function?_get_link($url,$text,$style=''){
$style=(empty($style))?'':'class="'.$style.'"';
if($this->is_ajax){
//如果是使用AJAX模式
return?'<a?'.$style.'?href="javascript:'.$this->ajax_action_name.'(\''.$url.'\')">'.$text.'</a>';
}else{
return?'<a?'.$style.'?href="'.$url.'">'.$text.'</a>';
}
}
/**
*?出錯處理方式
*/
function?error($function,$errormsg){
die('Error?in?file?<b>'.__FILE__.'</b>?,Function?<b>'.$function.'()</b>?:'.$errormsg);
}
}
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