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<?php
// $Id: pagenav.php,v 1.10.6.3 2005/07/04 15:23:50 mithyt2 Exp $
// ------------------------------------------------------------------------ //
// XOOPS - PHP Content Management System //
// Copyright (c) 2000 XOOPS.org //
// <http://www.xoops.org/> //
// ------------------------------------------------------------------------ //
// This program is free software; you can redistribute it and/or modify //
// it under the terms of the GNU General Public License as published by //
// the Free Software Foundation; either version 2 of the License, or //
// (at your option) any later version. //
// //
// You may not change or alter any portion of this comment or credits //
// of supporting developers from this source code or any supporting //
// source code which is considered copyrighted (c) material of the //
// original comment or credit authors. //
// //
// This program is distributed in the hope that it will be useful, //
// but WITHOUT ANY WARRANTY; without even the implied warranty of //
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the //
// GNU General Public License for more details. //
// //
// You should have received a copy of the GNU General Public License //
// along with this program; if not, write to the Free Software //
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA //
// ------------------------------------------------------------------------ //
// Author: Kazumi Ono (AKA onokazu) //
// URL: http://www.myweb.ne.jp/, http://www.xoops.org/, http://jp.xoops.org/ //
// Project: The XOOPS Project //
// ------------------------------------------------------------------------- //
/**
* Class to facilitate navigation in a multi page document/list
*
* @package kernel
* @subpackage util
*
* @author Kazumi Ono <onokazu@xoops.org>
* @copyright (c) 2000-2003 The Xoops Project - www.xoops.org
*/
class XoopsPageNav
{
/**#@+
* @access private
*/
var $total;
var $perpage;
var $current;
var $url;
/**#@-*/
/**
* Constructor
*
* @param int $total_items Total number of items
* @param int $items_perpage Number of items per page
* @param int $current_start First item on the current page
* @param string $start_name Name for "start" or "offset"
* @param string $extra_arg Additional arguments to pass in the URL
**/
function XoopsPageNav($total_items, $items_perpage, $current_start, $start_name="start", $extra_arg="")
{
$this->total = intval($total_items);
$this->perpage = intval($items_perpage);
$this->current = intval($current_start);
if ( $extra_arg != '' && ( substr($extra_arg, -5) != '&' || substr($extra_arg, -1) != '&' ) ) {
$extra_arg .= '&';
}
$url = parse_url($_SERVER['REQUEST_URI']);
$this->url = $url['path'].'?'.$extra_arg.trim($start_name).'=';
}
/**
* Create text navigation
*
* @param integer $offset
* @return string
**/
function renderNav($offset = 4)
{
$ret = '';
if ( $this->total <= $this->perpage ) {
return $ret;
}
$total_pages = ceil($this->total / $this->perpage);
if ( $total_pages > 1 ) {
$prev = $this->current - $this->perpage;
if ( $prev >= 0 ) {
$ret .= '<a href="'.$this->url.$prev.'">«</a> ';
}
$counter = 1;
$current_page = intval(floor(($this->current + $this->perpage) / $this->perpage));
while ( $counter <= $total_pages ) {
if ( $counter == $current_page ) {
$ret .= '<b>('.$counter.')</b> ';
} elseif ( ($counter > $current_page-$offset && $counter < $current_page + $offset ) || $counter == 1 || $counter == $total_pages ) {
if ( $counter == $total_pages && $current_page < $total_pages - $offset ) {
$ret .= '... ';
}
$ret .= '<a href="'.$this->url.(($counter - 1) * $this->perpage).'">'.$counter.'</a> ';
if ( $counter == 1 && $current_page > 1 + $offset ) {
$ret .= '... ';
}
}
$counter++;
}
$next = $this->current + $this->perpage;
if ( $this->total > $next ) {
$ret .= '<a href="'.$this->url.$next.'">»</a> ';
}
}
return $ret;
}
/**
* Create a navigational dropdown list
*
* @param boolean $showbutton Show the "Go" button?
* @return string
**/
function renderSelect($showbutton = false)
{
if ( $this->total < $this->perpage ) {
return;
}
$total_pages = ceil($this->total / $this->perpage);
$ret = '';
if ( $total_pages > 1 ) {
$ret = '<form name="pagenavform">';
$ret .= '<select name="pagenavselect" onchange="location=this.options[this.options.selectedIndex].value;">';
$counter = 1;
$current_page = intval(floor(($this->current + $this->perpage) / $this->perpage));
while ( $counter <= $total_pages ) {
if ( $counter == $current_page ) {
$ret .= '<option value="'.$this->url.(($counter - 1) * $this->perpage).'" selected="selected">'.$counter.'</option>';
} else {
$ret .= '<option value="'.$this->url.(($counter - 1) * $this->perpage).'">'.$counter.'</option>';
}
$counter++;
}
$ret .= '</select>';
if ($showbutton) {
$ret .= ' <input type="submit" value="'._GO.'" />';
}
$ret .= '</form>';
}
return $ret;
}
/**
* Create navigation with images
*
* @param integer $offset
* @return string
**/
function renderImageNav($offset = 4)
{
if ( $this->total < $this->perpage ) {
return;
}
$total_pages = ceil($this->total / $this->perpage);
$ret = '';
if ( $total_pages > 1 ) {
$prev = $this->current - $this->perpage;
if ( $prev >= 0 ) {
$ret .= '<div class="pagneutral" style="float: left;"><a href="'.$this->url.$prev.'"><</a></div>';
}
$ret .= '<div style="float: left;"><img src="'.XOOPS_URL.'/images/blank.gif" width="6" alt="" /></div>';
$counter = 1;
$current_page = intval(floor(($this->current + $this->perpage) / $this->perpage));
while ( $counter <= $total_pages ) {
if ( $counter == $current_page ) {
$ret .= '<div style="float:left;" class="pagact"><b>'.$counter.'</b></div>';
} elseif ( ($counter > $current_page-$offset && $counter < $current_page + $offset ) || $counter == 1 || $counter == $total_pages ) {
if ( $counter == $total_pages && $current_page < $total_pages - $offset ) {
$ret .= '<div style="float: left;" class="paginact">...</div>';
}
$ret .= '<div style="float: left;" class="paginact"><a href="'.$this->url.(($counter - 1) * $this->perpage).'">'.$counter.'</a></div>';
if ( $counter == 1 && $current_page > 1 + $offset ) {
$ret .= '<div style="float: left;" class="paginact">...</div>';
}
}
$counter++;
}
$ret .= '<div style="float: left;"><img src="'.XOOPS_URL.'/images/blank.gif" width="6" alt="" /></div>';
$next = $this->current + $this->perpage;
if ( $this->total > $next ) {
$ret .= '<div style="float: left;" class="pagneutral"><a href="'.$this->url.$next.'">></a></div>';
}
else {
$ret .= '<div style="float: left;"> </div>';
}
}
$ret .= '<br style="clear: both;" />';
return $ret;
}
}
?>
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