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   1  <?php
   2  /**
   3  * @version $Id: pageNavigation.php 5513 2006-10-19 12:17:15Z friesengeist $
   4  * @package Joomla
   5  * @copyright Copyright (C) 2005 Open Source Matters. All rights reserved.
   6  * @license http://www.gnu.org/copyleft/gpl.html GNU/GPL, see LICENSE.php
   7  * Joomla! is free software. This version may have been modified pursuant
   8  * to the GNU General Public License, and as distributed it includes or
   9  * is derivative of works licensed under the GNU General Public License or
  10  * other free or open source software licenses.
  11  * See COPYRIGHT.php for copyright notices and details.
  12  */
  13  
  14  // no direct access
  15  defined( '_VALID_MOS' ) or die( 'Restricted access' );
  16  
  17  /**
  18  * Page navigation support class
  19  * @package Joomla
  20  */
  21  class mosPageNav {
  22      /** @var int The record number to start dislpaying from */
  23      var $limitstart = null;
  24      /** @var int Number of rows to display per page */
  25      var $limit = null;
  26      /** @var int Total number of rows */
  27      var $total = null;
  28  
  29  	function mosPageNav( $total, $limitstart, $limit ) {
  30          $this->total        = (int) $total;
  31          $this->limitstart    = (int) max( $limitstart, 0 );
  32          $this->limit        = (int) max( $limit, 0 );
  33      }
  34      /**
  35      * Returns the html limit # input box
  36      * @param string The basic link to include in the href
  37      * @return string
  38      */
  39  	function getLimitBox ( $link ) {
  40          $limits = array();
  41          for ($i=5; $i <= 30; $i+=5) {
  42              $limits[] = mosHTML::makeOption( "$i" );
  43          }
  44          $limits[] = mosHTML::makeOption( "50" );
  45  
  46          // build the html select list
  47          $link = $link ."&amp;limit=' + this.options[selectedIndex].value + '&amp;limitstart=". $this->limitstart;
  48          $link = sefRelToAbs( $link );
  49          return mosHTML::selectList( $limits, 'limit', 'class="inputbox" size="1" onchange="document.location.href=\''. $link .'\';"', 'value', 'text', $this->limit );
  50      }
  51      /**
  52      * Writes the html limit # input box
  53      * @param string The basic link to include in the href
  54      */
  55  	function writeLimitBox ( $link ) {
  56          echo mosPageNav::getLimitBox( $link );
  57      }
  58      /**
  59      * Writes the html for the pages counter, eg, Results 1-10 of x
  60      */
  61  	function writePagesCounter() {
  62          $txt = '';
  63          $from_result = $this->limitstart+1;
  64          if ($this->limitstart + $this->limit < $this->total) {
  65              $to_result = $this->limitstart + $this->limit;
  66          } else {
  67              $to_result = $this->total;
  68          }
  69          if ($this->total > 0) {
  70              $txt .= _PN_RESULTS." $from_result - $to_result "._PN_OF." $this->total";
  71          }
  72          return $to_result ? $txt : '';
  73      }
  74  
  75      /**
  76      * Writes the html for the leafs counter, eg, Page 1 of x
  77      */
  78  	function writeLeafsCounter() {
  79          $txt = '';
  80          $page = ceil( ($this->limitstart + 1) / $this->limit );
  81          if ($this->total > 0) {
  82              $total_pages = ceil( $this->total / $this->limit );
  83              $txt .= _PN_PAGE." $page "._PN_OF." $total_pages";
  84          }
  85          return $txt;
  86      }    
  87  
  88      /**
  89      * Writes the html links for pages, eg, previous, next, 1 2 3 ... x
  90      * @param string The basic link to include in the href
  91      */
  92  	function writePagesLinks( $link ) {
  93          $txt = '';
  94  
  95          $displayed_pages = 10;
  96          $total_pages = $this->limit ? ceil( $this->total / $this->limit ) : 0;
  97          $this_page = $this->limit ? ceil( ($this->limitstart+1) / $this->limit ) : 1;
  98          $start_loop = (floor(($this_page-1)/$displayed_pages))*$displayed_pages+1;
  99          if ($start_loop + $displayed_pages - 1 < $total_pages) {
 100              $stop_loop = $start_loop + $displayed_pages - 1;
 101          } else {
 102              $stop_loop = $total_pages;
 103          }
 104  
 105          $link .= '&amp;limit='. $this->limit;
 106  
 107          if (!defined( '_PN_LT' ) || !defined( '_PN_RT' ) ) {
 108              DEFINE('_PN_LT','&lt;');
 109              DEFINE('_PN_RT','&gt;');
 110          }
 111  
 112          $pnSpace = '';
 113          if (_PN_LT || _PN_RT) $pnSpace = "&nbsp;";
 114  
 115          if ($this_page > 1) {
 116              $page = ($this_page - 2) * $this->limit;
 117              $txt .= '<a href="'. sefRelToAbs( "$link&amp;limitstart=0" ) .'" class="pagenav" title="'. _PN_START .'">'. _PN_LT . _PN_LT . $pnSpace . _PN_START .'</a> ';
 118              $txt .= '<a href="'. sefRelToAbs( "$link&amp;limitstart=$page" ) .'" class="pagenav" title="'. _PN_PREVIOUS .'">'. _PN_LT . $pnSpace . _PN_PREVIOUS .'</a> ';
 119          } else {
 120              $txt .= '<span class="pagenav">'. _PN_LT . _PN_LT . $pnSpace . _PN_START .'</span> ';
 121              $txt .= '<span class="pagenav">'. _PN_LT . $pnSpace . _PN_PREVIOUS .'</span> ';
 122          }
 123  
 124          for ($i=$start_loop; $i <= $stop_loop; $i++) {
 125              $page = ($i - 1) * $this->limit;
 126              if ($i == $this_page) {
 127                  $txt .= '<span class="pagenav">'. $i .'</span> ';
 128              } else {
 129                  $txt .= '<a href="'. sefRelToAbs( $link .'&amp;limitstart='. $page ) .'" class="pagenav"><strong>'. $i .'</strong></a> ';
 130              }
 131          }
 132  
 133          if ($this_page < $total_pages) {
 134              $page = $this_page * $this->limit;
 135              $end_page = ($total_pages-1) * $this->limit;
 136              $txt .= '<a href="'. sefRelToAbs( $link .'&amp;limitstart='. $page ) .' " class="pagenav" title="'. _PN_NEXT .'">'. _PN_NEXT . $pnSpace . _PN_RT .'</a> ';
 137              $txt .= '<a href="'. sefRelToAbs( $link .'&amp;limitstart='. $end_page ) .' " class="pagenav" title="'. _PN_END .'">'. _PN_END . $pnSpace . _PN_RT . _PN_RT .'</a>';
 138          } else {
 139              $txt .= '<span class="pagenav">'. _PN_NEXT . $pnSpace . _PN_RT .'</span> ';
 140              $txt .= '<span class="pagenav">'. _PN_END . $pnSpace . _PN_RT . _PN_RT .'</span>';
 141          }
 142          return $txt;
 143      }
 144      /**
 145       * Sets the vars {PAGE_LINKS}, {PAGE_LIST_OPTIONS} and {PAGE_COUNTER} for the page navigation template
 146       * @param object The patTemplate object
 147       * @param string The full link to be used in the nav link, eg index.php?option=com_content
 148       * @param string The name of the template to add the variables
 149       */
 150  	function setTemplateVars( &$tmpl, $link = '', $name = 'admin-list-footer' ) {
 151          $tmpl->addVar( $name, 'PAGE_LINKS', $this->writePagesLinks( $link ) );
 152          $tmpl->addVar( $name, 'PAGE_LIST_OPTIONS', $this->getLimitBox( $link ) );
 153          $tmpl->addVar( $name, 'PAGE_COUNTER', $this->writePagesCounter() );
 154      }
 155  }
 156  ?>