<?php
/*
* Smarty plugin
* -------------------------------------------------------------
* Type: function
* Name: pager
* Purpose: create a paging output to be able to browse long lists
* Version: 1.0
* Date: September 29, 2002
* Last Modified: July 7, 2003
* Install: Drop into the plugin direadasctory
* Author: Peter Dudas <pager_mail at netrendorseg dot hu>
* HTTP: http://smarty.hu/plugins/duda/
* -------------------------------------------------------------
*
* example:
* <{pager rowcount=$LISTDATA.rowcount limit=$LISTDATA.limit txt_first=$L_MORE class_num="fl" class_numon="fl" class_text="fl"}>
*
* CHANGES: 2003.03.14: positionable prev/next string. can use image instead of text
* CHANGES: 2003.03.21: Bugfixes
* CHANGES: 2003.04.14: Ability to show page number instead of row number, shift parameter
* CHANGES: 2003.07.07: prepared for negativ limits (unlimited), bugfix
*
*
*/
function smarty_function_pager($params, &$smarty)
{
/* displays paging links to be able to browse in bit set of records
@param mixed $rowcount - total number of items to page in between (if array=>numeer of lines)
@param string $show - 'page' - to show page numbers, 'record' - to show record numbers (default records)
@param int $limit - number of items on a page (if <0 unlimited)
@param string $posvar - name of the php variable that contains the position data ($_REQUEST)
@param string $forwardvars - comma separated list of php variablenames to forward in the links (only from $_REQUEST[] !!!)
@param string $txt_first - on the first page don't print out all pages, just a this text, if set empty prints all page numbers
@param string $img_first - on the first page don't print out all pages, just a this text, if set empty prints all page numbers
@param boolean $no_first - print out all the pages, do not start with txt_firts, equals to txt_first set empty
@param string $txt_prev - script to go to the prev page
@param string $img_prev - button image to the prev page
@param string $txt_next - script to go to the next page
@param string $img_next - button image to go to the next page
@param string $txt_pos - text position = 'top', 'bottom', 'middle/side'
@param string $class_num - class for the page numbers <A> tag!
@param string $class_numon - class for the aktive page!
@param string $class_text - class for the texts
@param string $separator - string to put between the 1 2 3 pages (1 separator 2 separator);
@param int $firstpos - record number of the first position
@param int $shift - shift the record numbers with this value (useful if the position variable is printed, 0. page look bad, but 1. page!)
*/
// START INIT
$show = 'record';
$posvar = 'pos';
$separator = ' - ';
$class_text = 'nav';
$class_num = 'small';
$class_numon = 'big';
$txt_pos = 'middle';
$txt_prev = '<'; // previous
$txt_next = '>'; // next
$txt_first = 'More'; // archive, more articles
$shift = 0;
foreach($params as $key=>$value) {
$tmps[strtolower($key)] = $value;
$tmp = strtolower($key);
if (!(${$tmp} = $value)) {
${$tmp} = '';
}
}
settype($shift, 'integer');
// START data check
$minVars = array('limit');
foreach($minVars as $tmp) {
if (empty($params[$tmp])) {
$smarty->trigger_error('plugin "pager": missing or empty parameter: "'.$tmp.'"');
}
}
// END data check
if ($txt_pos == 'middle') {
$txt_pos = 'side';
}
if (!in_array($txt_pos, array('side', 'top', 'bottom'))) {
$smarty->trigger_error('plugin "pager": bad value for : "txt_pos"');
}
// if there is no need for paging at all
if (is_array($rowcount)) {
$rowcount = count($rowcount);
} elseif (!is_int($rowcount)) {
ceil($rowcount);
}
if ($rowcount <= $limit) {
return '';
}
if ($limit < 1) {
$limit = $rowcount + 1;
}
if (!empty($no_first)) {
unset($txt_first);
}
// determine the real position if the diplayed numbers were shifted (eg: showing 1 instead of 0)
if ($shift > 0) {
$pos = $_REQUEST[$posvar] - $shift;
if ($pos < 0) {
$pos = 0;
}
} else {
$pos = $_REQUEST[$posvar];
}
// END INIT
// print '<h1>pos:'.$pos.'</h1>';
// remove these vars from the request_uri - only for beauty
$removeVars = array($posvar, '_rc');
// START remove the unwanted variables from the query string
parse_str($_SERVER['QUERY_STRING'], $urlVars);
// add the forward vars
if (!is_array($forwardvars)) {
$forwardvars = preg_split('/[,;\s]/', $forwardvars, -1, PREG_SPLIT_NO_EMPTY);
}
$urlVars = array_merge($urlVars, $forwardvars);
foreach($urlVars as $key=>$value) {
if (in_array($key, $removeVars)) {
unset($urlVars[$key]);
}
}
// END remove the unwanted variables from the query string
// START build up the link
$tmp = '';
foreach($urlVars as $key=>$value) {
if (is_array($value)) {
foreach($value as $val) {
$tmp .= '&'.$key.'[]='.urlencode($val);
}
} elseif(!empty($value)) {
$tmp .= '&'.$key.'='.urlencode($value);
} else {
$tmp .= '&'.$key;
}
}
if (!empty($tmp)) {
$url = $_SERVER['SCRIPT_NAME'].'?'.substr($tmp, 1);;
$link = '&';
} else {
$url = $_SERVER['SCRIPT_NAME'];
$link = '?';
}
// END build up the link
// if there is no position (or 0) prepare the link for the second page
if ((empty($pos) OR ($pos < 1)) AND ($rowcount > $limit)) {
if (!empty($firstpos)) {
$short['first'] .= $url.$link.$posvar.'='.$firstpos;
} elseif ($pos == -1) {
$short['first'] .= $url.$link.$posvar.'='.(1 + $shift);
} else {
$short['first'] = $url.$link.$posvar.'='.($limit+$shift);
}
}
// START create data to print
if ($rowcount > $limit) {
if ($rowcount < ($limit * 30)) {
for ($i=1; $i < $rowcount+1; $i+=$limit) {
if (($pos+1 >=$i) and ($pos+1 < ($i+$limit)) ) {
$short['now'] = $i;
}
$pages[$i] = $url.$link.$posvar.'='.($i - 1 + $shift);
}
} else { // if there a lot of records to page in beetween
// far before the actual position to bi steps ($limit*10)
for ($i=1; $i < ($pos-16*$limit); $i+=10*$limit) {
$pages[$i] = $url.$link.$posvar.'='.($i - 1 + $shift);
}
// around the actual position do small steps ($limit)
for ($tmp=1;($i < $pos+16*$limit) AND ($i < $rowcount+1); $i += $limit) {
if (($pos+1 >= $i) and ($pos+1 < ($i+$limit)) ) {
$short['now'] = ($i);
}
$pages[$i] = $url.$link.$posvar.'='.($i - 1 + $shift);
}
// over $pos do big steps ($limit*10)
for ($tmp=1;$i < $rowcount+1; $i += 10*$limit) {
$pages[$i] = $url.$link.$posvar.'='.($i - 1 + $shift);
}
}
// previous - next stepping
if ($pos >= $limit) {
$short['prev'] = $url.$link.$posvar.'='.($pos - $limit + $shift);
}
if ( ($pos) < ($rowcount-$limit)) {
$short['next'] = $url.$link.$posvar.'='.($pos + $limit + $shift);
}
}
// END preparing the arrays to print
// START DISPLAY ---------------------------------------------------------------------------
// all neccesary data are in $pages, and in $short
if (($pos == 0) AND ((!empty($txt_first)) OR !empty($img_first))){
print '<p align="center">';
print '<a class="'.$class_text.'" href="'.$short['first'].'">';
if (!empty($img_first)) {
if (preg_match('/\</', $img_first)) {
// image tag
print $img_first;
} else {
// image url
print '<img src="'.$img_first.'" border="0" />';
}
} else {
print $txt_first;
}
print '</a></p>'."\n";
} else {
// -----------------------------------------------------------------------
// START prepare the prev and next string/image, make it a link ....
if ($pos >= $limit) {
$cache['prev'] = '<a class="'.$class_text.'" href="'.$short['prev'].'">';
if (!empty($img_prev)) {
if (preg_match('/\</', $img_prev)) {
// image tag
$cache['prev'] .= $img_prev;
} else {
// image url
$cache['prev'] .= '<img src="'.$img_prev.'" border="0" />';
}
} else {
$cache['prev'] .= $txt_prev;
}
$cache['prev'] .= '</a> ';
} else {
$cache['prev'] = '';
}
// next
if ($pos < ($rowcount-$limit)) {
$cache['next'] = ' <a class="'.$class_text.'" href="'.$short['next'].'">';
if (!empty($img_next)) {
if (preg_match('/\</', $img_next)) {
// image tag
$cache['next'] .= $img_next;
} else {
// image url
$cache['next'] .= '<img src="'.$img_next.'" border="0" />';
}
} else {
$cache['next'] .= $txt_next;
}
$cache['next'] .= '</a>';
} else {
$cache['next'] = '';
}
// END prepare the prev and next string/image, make it a link ....
// -----------------------------------------------------------------------
// START PRININT
if ($txt_pos == 'top') {
print '<p align="center">'.$cache['prev'].$cache['next'].'</p>'."\n";
}
print '<p align="center">';
if (($txt_pos == 'side') AND (!empty($cache['prev']))) {
print $cache['prev'];
}
foreach($pages as $num=>$url) {
if ($num > $limit) {
print ' '.$separator.' ';
}
if ($show == 'record') { // show record number for paging
$tmp = $num;
} else { // show page number for paging
if ($limit == 1) {
$tmp = floor($num/$limit);
} else {
$tmp = floor($num/$limit) + 1;
}
}
print '<a class="'.(($num == $short['now']) ? $class_numon : $class_num).'" href="'.$url.'">'.$tmp.'</a>';
}
if (($txt_pos == 'side') AND (!empty($cache['next']))) {
print $cache['next'];
}
print '</p>'."\n";
// END NUMBERS
// START PREVIOUS, NEXT paging
if ($txt_pos == 'bottom') {
print '<p align="center">'.$cache['prev'].$cache['next'].'</p>'."\n";
}
// END PREVIOUS, NEXT paging
}
// END DISPLAY
return '';
}
?>
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