pagination.class.php

Go to the documentation of this file.

<?php
class pagination {

        private $_view;

        private $_range;

        private $_urlp;

        private $_actual;
        
        private $_last;

        private $_start;

        private $_end;
        
        private $_tot;
        
        private $_npages;
        
        function __construct($ifp, $tot, $opts=null) {

                $this->_view = new view();

                $this->_urlp = gOpt($opts, 'urlp', 'p');
                $this->_npages = gOpt($opts, 'npages', 2);
                $this->_permalink = gOpt($opts, 'permalink', true);

                $this->_range = $ifp;
                $this->_tot = $tot;
                $this->_last = ceil($this->_tot/$this->_range);
                
                $this->_actual = $this->actual();
                $this->_start = $this->start()+1;
                $this->_end = ($this->_start + $this->_range - 1) > $this->_tot ? $this->_tot : $this->_start + $this->_range - 1;
                

        }
        
        public function actual() {
        
                $actual = isset($_REQUEST[$this->_urlp]) ? cleanVar($_REQUEST[$this->_urlp], 'int') : 1;

                return $actual < 1 ? 1 : ($actual > $this->_last ? $this->_last : $actual);
        }
        
        public function start() {

                $start = ($this->_actual - 1) * $this->_range;
                
                return $start;
        }
        
        public function total() {

                return $this->_tot;

        }
        
        public function limit() {

                return ($this->start() + $this->_range) > $this->_tot ? $this->_tot : $this->start() + $this->_range;

        }
        
        public function summary() {

                if(!$this->_last) return null;

                $this->_view->setTpl('pagination_summary');
                $this->_view->assign('start', $this->_start);
                $this->_view->assign('end', $this->_end);
                $this->_view->assign('total', $this->_tot);

                return $this->_view->render();
        }

        public function navigation() {
                
                if($this->_last == 1) return "";
                
                $clean_uri = $this->_permalink 
                        ? preg_replace("#".$this->_urlp."/[0-9]*/#", "", $_SERVER['REQUEST_URI'])
                        : preg_replace("#(&|\?)".$this->_urlp."=[0-9]*#", "", $_SERVER['REQUEST_URI']);
                preg_match("#(.*?)(/)([^/]*)$#", $clean_uri, $matches);

                if($this->_permalink) {
                        $base_link = $matches[1]."/".$this->_urlp."/";
                        $params = isset($matches[3]) ? $matches[3] : '';
                }
                else {
                        $base_link = $matches[1]."/";
                        $params = (isset($matches[3]) && $matches[3]) ? $matches[3]."&".$this->_urlp."=" : "?".$this->_urlp."=";
                }

                $pages = array();
                for($i=1; $i<$this->_last+1; $i++) {
                        if($i == 1 || abs($this->_actual - $i) < ($this->_npages+1) || $i == $this->_last) {
                                $page = array('number'=>$i);
                                if($this->_actual != $i) 
                                        $page['link'] = $this->_permalink ? $base_link.$i."/".$params : $base_link.$params.$i;
                                if($this->_actual == $i) $page['selected'] = true;
                                $pages[] = $page;
                        }
                        elseif(abs($this->_actual - $i) == $this->_npages + 1) {
                                $page = array('number'=>'GAP');
                                $pages[] = $page;
                        }
                }

                $this->_view->setTpl('pagination_navigation');
                $this->_view->assign('pages', $pages);
                $prev_p = $this->_actual == 1 
                        ? null 
                        : anchor(($this->_permalink ? $base_link.($this->_actual-1)."/".$params : $base_link.$params.($this->_actual-1)), "<--");
                $next_p = $this->_actual == $this->_last 
                        ? null : 
                        anchor(($this->_permalink ? $base_link.($this->_actual+1)."/".$params : $base_link.$params.($this->_actual+1)), "-->");
                $this->_view->assign('prev', $prev_p);
                $this->_view->assign('next', $next_p);

                return $this->_view->render();

        }

}

?>