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<?php
/**
* Pager class
* Displays a list of pages, usually at the bottom of a page, to navigate to different pages
*
* This file is part of Zoph.
*
* Zoph 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.
*
* Zoph 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 Zoph; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
* @author Jeroen Roos
* @package Zoph
*/
namespace template;
use web\request;
/**
* Pager class
* Displays a list of pages, usually at the bottom of a page, to navigate to different pages
*
* @author Jeroen Roos
* @package Zoph
*/
class pager {
private $current=0;
private $pages=array();
public function __construct($current, $total, $numPages, $pageSize, $maxSize, $requestVars, $var) {
$url=$_SERVER['PHP_SELF'];
$pageNum = floor($current / $pageSize) + 1;
$this->current=(string) $pageNum;
$pageGroup=0;
$pages[$pageGroup]=array();
/** @todo pass as variable instead of creating here */
$request = request::create();
if ($current > 0) {
$newOffset = max(0, $current - $pageSize);
$this->pages[$pageGroup][translate("Prev")]= $url . "?" . http_build_query($request->getUpdatedVars($var, $newOffset));
}
if ($numPages > 1) {
$midPage = floor($maxSize / 2);
$page = $pageNum - $midPage;
if ($page <= 0) {
$page = 1;
}
$lastPage = $page + $maxSize - 1;
if ($lastPage > $numPages) {
$page = $page - $lastPage + $numPages;
if ($page <= 0) {
$page = 1;
}
$lastPage = $numPages;
}
if ($page > 1) {
$this->pages[$pageGroup]["1"] = $url . "?" . http_build_query($request->getUpdatedVars($var, 0));
}
$pages[++$pageGroup]=array();
while ($page <= $lastPage) {
$newOffset = ($page - 1) * $pageSize;
$this->pages[$pageGroup][(string) $page] = $url . "?" . http_build_query($request->getUpdatedVars($var, $newOffset));
$page++;
}
$pages[++$pageGroup]=array();
if ($page <= $numPages) {
$this->pages[$pageGroup][(string) $numPages] = $url . "?" . http_build_query($request->getUpdatedVars($var, ($numPages-1) * $pageSize));
}
}
if ($total > $current + $pageSize) {
$newOffset = $current + $pageSize;
$this->pages[$pageGroup][translate("Next")]= $url . "?" . http_build_query($request->getUpdatedVars($var, $newOffset));
}
}
public function __toString() {
return (string) $this->getBlock();
}
public function getBlock() {
return new block("pager", array(
"pages" => $this->pages,
"current" => $this->current
));
}
}
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