199 lines
7.9 KiB
PHP
199 lines
7.9 KiB
PHP
<?php
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if(!defined('entry') || !entry) die('Not a valid page');
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class pagination{
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/*
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Script Name: *Digg Style Paginator Class
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Script URI: http://www.mis-algoritmos.com/2007/05/27/digg-style-pagination-class/
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Description: Class in PHP that allows to use a pagination like a digg or sabrosus style.
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Script Version: 0.3
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Author: Victor De la Rocha
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Author URI: http://www.mis-algoritmos.com
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*/
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/*Default values*/
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var $total_pages = null;
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var $limit = null;
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var $target = "";
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var $page = 1;
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var $adjacents = 2;
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var $showCounter = false;
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var $className = "pagination";
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var $parameterName = "page";
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var $urlF = false;//urlFriendly
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/*Buttons next and previous*/
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var $nextT = "Next";
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var $nextI = "»"; //►
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var $prevT = "Previous";
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var $prevI = "«"; //◄
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/*****/
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var $calculate = false;
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#Total items
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function items($value){$this->total_pages = intval($value);}
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#how many items to show per page
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function limit($value){$this->limit = intval($value);}
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#Page to sent the page value
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function target($value){$this->target = $value;}
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#Current page
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function currentPage($value){$this->page = intval($value);}
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#How many adjacent pages should be shown on each side of the current page?
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function adjacents($value){$this->adjacents = intval($value);}
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#show counter?
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function showCounter($value=""){$this->showCounter=($value===true)?true:false;}
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#to change the class name of the pagination div
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function changeClass($value=""){$this->className=$value;}
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function nextLabel($value){$this->nextT = $value;}
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function nextIcon($value){$this->nextI = $value;}
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function prevLabel($value){$this->prevT = $value;}
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function prevIcon($value){$this->prevI = $value;}
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#to change the class name of the pagination div
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function parameterName($value=""){$this->parameterName=$value;}
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#to change urlFriendly
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function urlFriendly($value="%"){
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if(eregi('^ *$',$value)){
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$this->urlF=false;
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return false;
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}
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$this->urlF=$value;
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}
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var $pagination;
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function pagination(){}
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function show(){
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if(!$this->calculate)
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if($this->calculate())
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echo "<div class=\"$this->className\">$this->pagination</div>";
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}
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function get_pagenum_link($id){
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//if(strpos($this->target,'?')===false)
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if($this->urlF)
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return str_replace($this->urlF,$id,$this->target);
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else
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return "$this->target?$this->parameterName=$id";
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//else
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//return "$this->target&$this->parameterName=$id";
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}
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function calculate(){
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$this->pagination = "";
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$this->calculate == true;
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$error = false;
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if($this->urlF and $this->urlF != '%' and strpos($this->target,$this->urlF)===false){
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//Es necesario especificar el comodin para sustituir
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echo "Especificaste un wildcard para sustituir, pero no existe en el target<br />";
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$error = true;
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}elseif($this->urlF and $this->urlF == '%' and strpos($this->target,$this->urlF)===false){
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echo "Es necesario especificar en el target el comodin % para sustituir el n<EFBFBD>mero de p<EFBFBD>gina<br />";
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$error = true;
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}
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if($this->total_pages == null){
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echo "It is necessary to specify the <strong>number of pages</strong> (\$class->items(1000))<br />";
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$error = true;
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}
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if($this->limit == null){
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echo "It is necessary to specify the <strong>limit of items</strong> to show per page (\$class->limit(10))<br />";
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$error = true;
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}
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if($error)return false;
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$n = trim($this->nextT.' '.$this->nextI);
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$p = trim($this->prevI.' '.$this->prevT);
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/* Setup vars for query. */
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if($this->page)
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$start = ($this->page - 1) * $this->limit; //first item to display on this page
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else
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$start = 0; //if no page var is given, set start to 0
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/* Setup page vars for display. */
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if ($this->page == 0) $this->page = 1; //if no page var is given, default to 1.
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$prev = $this->page - 1; //previous page is page - 1
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$next = $this->page + 1; //next page is page + 1
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$lastpage = ceil($this->total_pages/$this->limit); //lastpage is = total pages / items per page, rounded up.
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$lpm1 = $lastpage - 1; //last page minus 1
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/*
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Now we apply our rules and draw the pagination object.
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We're actually saving the code to a variable in case we want to draw it more than once.
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*/
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if($lastpage > 1){
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//anterior button
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if($this->page > 1)
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$this->pagination .= "<a href=\"".$this->get_pagenum_link($prev)."\">$p</a>";
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else
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$this->pagination .= "<span class=\"disabled\">$p</span>";
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//pages
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if ($lastpage < 7 + ($this->adjacents * 2)){//not enough pages to bother breaking it up
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for ($counter = 1; $counter <= $lastpage; $counter++){
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if ($counter == $this->page)
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$this->pagination .= "<span class=\"current\">$counter</span>";
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else
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$this->pagination .= "<a href=\"".$this->get_pagenum_link($counter)."\">$counter</a>";
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}
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}
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elseif($lastpage > 5 + ($this->adjacents * 2)){//enough pages to hide some
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//close to beginning; only hide later pages
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if($this->page < 1 + ($this->adjacents * 2)){
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for ($counter = 1; $counter < 4 + ($this->adjacents * 2); $counter++){
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if ($counter == $this->page)
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$this->pagination .= "<span class=\"current\">$counter</span>";
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else
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$this->pagination .= "<a href=\"".$this->get_pagenum_link($counter)."\">$counter</a>";
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}
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$this->pagination .= "...";
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$this->pagination .= "<a href=\"".$this->get_pagenum_link($lpm1)."\">$lpm1</a>";
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$this->pagination .= "<a href=\"".$this->get_pagenum_link($lastpage)."\">$lastpage</a>";
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}
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//in middle; hide some front and some back
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elseif($lastpage - ($this->adjacents * 2) > $this->page && $this->page > ($this->adjacents * 2)){
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$this->pagination .= "<a href=\"".$this->get_pagenum_link(1)."\">1</a>";
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$this->pagination .= "<a href=\"".$this->get_pagenum_link(2)."\">2</a>";
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$this->pagination .= "...";
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for ($counter = $this->page - $this->adjacents; $counter <= $this->page + $this->adjacents; $counter++)
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if ($counter == $this->page)
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$this->pagination .= "<span class=\"current\">$counter</span>";
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else
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$this->pagination .= "<a href=\"".$this->get_pagenum_link($counter)."\">$counter</a>";
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$this->pagination .= "...";
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$this->pagination .= "<a href=\"".$this->get_pagenum_link($lpm1)."\">$lpm1</a>";
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$this->pagination .= "<a href=\"".$this->get_pagenum_link($lastpage)."\">$lastpage</a>";
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}
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//close to end; only hide early pages
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else{
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$this->pagination .= "<a href=\"".$this->get_pagenum_link(1)."\">1</a>";
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$this->pagination .= "<a href=\"".$this->get_pagenum_link(2)."\">2</a>";
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$this->pagination .= "...";
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for ($counter = $lastpage - (2 + ($this->adjacents * 2)); $counter <= $lastpage; $counter++)
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if ($counter == $this->page)
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$this->pagination .= "<span class=\"current\">$counter</span>";
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else
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$this->pagination .= "<a href=\"".$this->get_pagenum_link($counter)."\">$counter</a>";
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}
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}
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//siguiente button
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if ($this->page < $counter - 1)
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$this->pagination .= "<a href=\"".$this->get_pagenum_link($next)."\">$n</a>";
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else
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$this->pagination .= "<span class=\"disabled\">$n</span>";
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if($this->showCounter)$this->pagination .= "<div class=\"pagination_data\">($this->total_pages Pages)</div>";
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}
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return true;
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}
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}
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?>
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