pagination.php | searchcode

/external/pagination.php

https://github.com/uwiuw/myphpclass
PHP | 255 lines | 182 code | 37 blank | 36 comment | 48 complexity | 1758236c71abcb48df021fc21d54efb7 MD5 | raw file

<?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 $showNumber = true;
		var $className = "pagination";
		var $classPreviousName = 'prev';
		var $classNextName = 'next';
		var $classCurrentName = 'current';
		var $parameterName = "paged";
		var $urlF = false;//urlFriendly

		/*Buttons next and previous*/
		var $nextT = "Next";
		var $nextI = "&#187;"; //&#9658;
		var $prevT = "Previous";
		var $prevI = "&#171;"; //&#9668;

		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;}
		
		#show pages num?
		function showNumber($value=""){$this->showNumber=($value===true)?true:false;}

		#to change the class name of the pagination div
		function changeClass($value=""){$this->className=$value;}
		
		#to change the class name of the previous link
		function changePreviousClass($value=""){$this->classPreviousName=$value;}
		
		#to change the class name of the next link
		function changeNextClass($value=""){$this->classNextName=$value;}
		
		#to change the class name of the current link
		function changeCurrentClass($value=""){$this->classCurrentName=$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($value="%"){
			if(preg_match('/^ *$/',$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 n�mero de p�gina<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($prev)."\" class=\"".$this->classPreviousName."\">$p</a>";
					 } else {
						$this->pagination .= "<span class=\"".$this->classPreviousName."\">$p</span>";
					}
				}
				//pages
				if ($lastpage < 7 + ($this->adjacents * 2)){//not enough pages to bother breaking it up
					for ($counter = 1; $counter <= $lastpage; $counter++){
						if ($this->showNumber) {
							if ($counter == $this->page)
								$this->pagination .= "<span class=\"".$this->classCurrentName."\">$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); $counter++){
							if ($this->showNumber) {
								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->showNumber) {
							$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)){
							if ($this->showNumber) {
								$this->pagination .= "<a href=\"".$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; $counter++) {
								if ($this->showNumber) {
									if ($counter == $this->page)
										$this->pagination .= "<span class=\"".$this->classCurrentName."\">$counter</span>";
									else
										$this->pagination .= "<a href=\"".$this->get_pagenum_link($counter)."\">$counter</a>";
								}
							}
							
							if ($this->showNumber) {
								$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{
						if ($this->showNumber) {
							$this->pagination .= "<a href=\"".$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; $counter++) {
							if ($this->showNumber) {
								if ($counter == $this->page)
									$this->pagination .= "<span class=\"".$this->classCurrentName."\">$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($next)."\" class=\"".$this->classNextName."\">$n</a>";
						else
							$this->pagination .= "<span class=\"".$this->classNextName."\">$n</span>";
						if($this->showCounter)$this->pagination .= "<div class=\"pagination_data\">($this->total_pages Pages)</div>";
				}
			}

			return true;
		}
	}
?>