<?php

class M_Pagination {

    var $total_pages = -1; //items
    var $limit = 10;
    var $items_title = 'items';
    var $target = "";
    var $page = 1;
    var $adjacents = 2;
    var $showCounter = false;
    var $className = "pagination-links";
    var $parameterName = "page";
    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;
    }

    #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 "<span class=\"displaying-num\">" . $this->total_pages . " " . $this->items_title . "</span><div class=\"tablenav-pages\"><span class=\"$this->className\">$this->pagination</span></div>\n";
    }

    function getOutput() {
        if (!$this->calculate)
            if ($this->calculate())
                return "<span class=\"$this->className\">$this->pagination</span>\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) {
            //_e("You have specified one wildcard to replace, but does it does not exist in the target", 'cp');
            $error = true;
        } elseif ($this->urlF and $this->urlF == '%' and strpos($this->target, $this->urlF) === false) {
            //_e("You must specify the wildcard% target to replace the page number", 'cp');
            $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

        if ($lastpage > 1) {
            if ($this->page) {
                //anterior button
                if ($this->page > 1)
                    $this->pagination .= "<a href=\"" . $this->get_pagenum_link(1) . "\" class=\"first-page\">&laquo;</a>&nbsp;<a href=\"" . $this->get_pagenum_link($prev) . "\" class=\"prev-page\">&lsaquo;</a>&nbsp;";
                else
                    $this->pagination .= "<a class=\"first-page disabled\">&laquo;</a>&nbsp;<a class=\"prev-page disabled\">&lsaquo;</a>&nbsp;"; //<span class=\"disabled\">&lsaquo;</span>";
            }
            //pages
            if ($lastpage < 7 + ($this->adjacents * 2)) {//not enough pages to bother breaking it up
                for ($counter = 1; $counter <= $lastpage; $counter++) {
                    /* if ($counter == $this->page)
                      $this->pagination .= "<span class=\"current-page\">$counter</span>";
                      else
                      $this->pagination .= "<a href=\"" . $this->get_pagenum_link($counter) . "\">$counter</a>"; */
                }
            }

            $this->pagination .= '&nbsp;<span class="paging-input">' . $this->page . ' of <span class="total-pages">' . $lastpage . '</span></span>&nbsp;';

            if ($this->page) {
                if ($this->page < $counter - 1)
                    $this->pagination .= "&nbsp;<a href=\"" . $this->get_pagenum_link($next) . "\" class=\"next-page\">&rsaquo;</a>&nbsp;<a href=\"" . $this->get_pagenum_link($lastpage) . "\" class=\"last-page\">&raquo;</a>";
                else
                    $this->pagination .= "&nbsp;<a class=\"next-page disabled\">&rsaquo;</a>&nbsp;<a class=\"last-page disabled\">&raquo;</a>";
                if ($this->showCounter)
                    $this->pagination .= "<div class=\"pagination_data\">($this->total_pages Pages)</div>";
            }
        }

        return true;
    }

}

?>