/
pagination.class.php
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/
pagination.class.php
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<?php
class pagination{
/*
Script Name: *Digg Style Paginator Class
Script URI: http://www.mis-algoritmos.com/2007/05/27/digg-style-pagination-class/
Description: Class in PHP that allows to use a pagination like a digg or sabrosus style.
Script Version: 0.4
Author: Victor De la Rocha
Author URI: http://www.mis-algoritmos.com
*/
/*Default values*/
var $total_pages = -1;//items
var $limit = null;
var $target = "";
var $page = 1;
var $adjacents = 2;
var $showCounter = false;
var $className = "pagination";
var $parameterName = "page";
var $urlF = false;//urlFriendly
/*Buttons next and previous*/
var $nextT = "Next";
var $nextI = "»"; //►
var $prevT = "Previous";
var $prevI = "«"; //◄
/*****/
var $calculate = false;
#Total items
function items($value){$this->total_pages = (int) $value;}
#how many items to show per page
function limit($value){$this->limit = (int) $value;}
#Page to sent the page value
function target($value){$this->target = $value;}
#Current page
function currentPage($value){$this->page = (int) $value;}
#How many adjacent pages should be shown on each side of the current page?
function adjacents($value){$this->adjacents = (int) $value;}
#show counter?
function showCounter($value=""){$this->showCounter=($value===true)?true:false;}
#to change the class name of the pagination div
function changeClass($value=""){$this->className=$value;}
function nextLabel($value){$this->nextT = $value;}
function nextIcon($value){$this->nextI = $value;}
function prevLabel($value){$this->prevT = $value;}
function prevIcon($value){$this->prevI = $value;}
#to change the class name of the pagination div
function parameterName($value=""){$this->parameterName=$value;}
#to change urlFriendly
function urlFriendly($value="%"){
if(eregi('^ *$',$value)){
$this->urlF=false;
return false;
}
$this->urlF=$value;
}
var $pagination;
function pagination(){}
function show(){
if(!$this->calculate)
if($this->calculate())
echo "<div class=\"$this->className\">$this->pagination</div>\n";
}
function getOutput(){
if(!$this->calculate)
if($this->calculate())
return "<div class=\"$this->className\">$this->pagination</div>\n";
}
function get_pagenum_link($id){
if(strpos($this->target,'?')===false)
if($this->urlF)
return str_replace($this->urlF,$id,$this->target);
else
return "$this->target?$this->parameterName=$id";
else
return "$this->target&$this->parameterName=$id";
}
function calculate(){
$this->pagination = "";
$this->calculate == true;
$error = false;
if($this->urlF and $this->urlF != '%' and strpos($this->target,$this->urlF)===false){
//Es necesario especificar el comodin para sustituir
echo "Especificaste un wildcard para sustituir, pero no existe en el target<br />";
$error = true;
}elseif($this->urlF and $this->urlF == '%' and strpos($this->target,$this->urlF)===false){
echo "Es necesario especificar en el target el comodin % para sustituir el número de página<br />";
$error = true;
}
if($this->total_pages < 0){
echo "It is necessary to specify the <strong>number of pages</strong> (\$class->items(1000))<br />";
$error = true;
}
if($this->limit == null){
echo "It is necessary to specify the <strong>limit of items</strong> to show per page (\$class->limit(10))<br />";
$error = true;
}
if($error)return false;
$n = trim($this->nextT.' '.$this->nextI);
$p = trim($this->prevI.' '.$this->prevT);
/* Setup vars for query. */
if($this->page)
$start = ($this->page - 1) * $this->limit; //first item to display on this page
else
$start = 0; //if no page var is given, set start to 0
/* Setup page vars for display. */
$prev = $this->page - 1; //previous page is page - 1
$next = $this->page + 1; //next page is page + 1
$lastpage = ceil($this->total_pages/$this->limit); //lastpage is = total pages / items per page, rounded up.
$lpm1 = $lastpage - 1; //last page minus 1
/*
Now we apply our rules and draw the pagination object.
We're actually saving the code to a variable in case we want to draw it more than once.
*/
if($lastpage > 1){
if($this->page){
//anterior button
if($this->page > 1)
$this->pagination .= "<a href=\"".$this->get_pagenum_link($prev)."\" class=\"prev\">$p</a>";
else
$this->pagination .= "<span class=\"disabled\">$p</span>";
}
//pages
if ($lastpage < 7 + ($this->adjacents * 2)){//not enough pages to bother breaking it up
for ($counter = 1; $counter <= $lastpage; $counter++){
if ($counter == $this->page)
$this->pagination .= "<span class=\"current\">$counter</span>";
else
$this->pagination .= "<a href=\"".$this->get_pagenum_link($counter)."\">$counter</a>";
}
}
elseif($lastpage > 5 + ($this->adjacents * 2)){//enough pages to hide some
//close to beginning; only hide later pages
if($this->page < 1 + ($this->adjacents * 2)){
for ($counter = 1; $counter < 4 + ($this->adjacents * 2); $counter++){
if ($counter == $this->page)
$this->pagination .= "<span class=\"current\">$counter</span>";
else
$this->pagination .= "<a href=\"".$this->get_pagenum_link($counter)."\">$counter</a>";
}
$this->pagination .= "...";
$this->pagination .= "<a href=\"".$this->get_pagenum_link($lpm1)."\">$lpm1</a>";
$this->pagination .= "<a href=\"".$this->get_pagenum_link($lastpage)."\">$lastpage</a>";
}
//in middle; hide some front and some back
elseif($lastpage - ($this->adjacents * 2) > $this->page && $this->page > ($this->adjacents * 2)){
$this->pagination .= "<a href=\"".$this->get_pagenum_link(1)."\">1</a>";
$this->pagination .= "<a href=\"".$this->get_pagenum_link(2)."\">2</a>";
$this->pagination .= "...";
for ($counter = $this->page - $this->adjacents; $counter <= $this->page + $this->adjacents; $counter++)
if ($counter == $this->page)
$this->pagination .= "<span class=\"current\">$counter</span>";
else
$this->pagination .= "<a href=\"".$this->get_pagenum_link($counter)."\">$counter</a>";
$this->pagination .= "...";
$this->pagination .= "<a href=\"".$this->get_pagenum_link($lpm1)."\">$lpm1</a>";
$this->pagination .= "<a href=\"".$this->get_pagenum_link($lastpage)."\">$lastpage</a>";
}
//close to end; only hide early pages
else{
$this->pagination .= "<a href=\"".$this->get_pagenum_link(1)."\">1</a>";
$this->pagination .= "<a href=\"".$this->get_pagenum_link(2)."\">2</a>";
$this->pagination .= "...";
for ($counter = $lastpage - (2 + ($this->adjacents * 2)); $counter <= $lastpage; $counter++)
if ($counter == $this->page)
$this->pagination .= "<span class=\"current\">$counter</span>";
else
$this->pagination .= "<a href=\"".$this->get_pagenum_link($counter)."\">$counter</a>";
}
}
if($this->page){
//siguiente button
if ($this->page < $counter - 1)
$this->pagination .= "<a href=\"".$this->get_pagenum_link($next)."\" class=\"next\">$n</a>";
else
$this->pagination .= "<span class=\"disabled\">$n</span>";
if($this->showCounter)$this->pagination .= "<div class=\"pagination_data\">($this->total_pages Pages)</div>";
}
}
return true;
}
}
?>