[Sommaire] [Imprimer]

   1  <?php
   2  
   3  require_once dirname(__FILE__) . '/Widget.php';
   4  
   5  /**
   6   * The Horde_UI_Pager:: provides links to individual pages.
   7   *
   8   * $Horde: framework/UI/UI/Pager.php,v 1.7.10.8 2006/06/20 09:08:26 jan Exp $
   9   *
  10   * Copyright 2004-2006 Joel Vandal <jvandal@infoteck.qc.ca>
  11   *
  12   * See the enclosed file COPYING for license information (LGPL). If you
  13   * did not receive this file, see http://www.fsf.org/copyleft/lgpl.html.
  14   *
  15   * @author  Ben Chavet <ben@chavet.net>
  16   * @author  Joel Vandal <jvandal@infoteck.qc.ca>
  17   * @author  Chuck Hagenbuch <chuck@horde.org>
  18   * @since   Horde_UI 0.0.1
  19   * @package Horde_UI
  20   */
  21  class Horde_UI_Pager extends Horde_UI_Widget {
  22  
  23      function Horde_UI_Pager($name, &$vars, $config)
  24      {
  25          if (!isset($config['page_limit'])) {
  26              $config['page_limit'] = 10;
  27          }
  28          if (!isset($config['perpage'])) {
  29              $config['perpage'] = 100;
  30          }
  31          parent::Horde_UI_Widget($name, $vars, $config);
  32      }
  33  
  34      /**
  35       * Render the pager.
  36       *
  37       * @return string  HTML code containing a centered table with the pager
  38       *      links.
  39       */
  40      function render()
  41      {
  42          global $prefs, $registry, $conf;
  43  
  44          $num = $this->_config['num'];
  45          $url = $this->_config['url'];
  46          $page_limit = $this->_config['page_limit'];
  47          $perpage = $this->_config['perpage'];
  48  
  49          $current_page = $this->_vars->get($this->_name);
  50  
  51          // Figure out how many pages there will be.
  52          $pages = ($num / $perpage);
  53          if (is_integer($pages)) {
  54              $pages--;
  55          }
  56          $pages = (int)$pages;
  57  
  58          // Return nothing if there is only one page.
  59          if ($pages == 0 || $num == 0) {
  60              return '';
  61          }
  62  
  63          $html = '<div class="pager">';
  64  
  65          // Create the '<< Prev' link if we are not on the first page.
  66          $link = Util::addParameter($url, $this->_name, $current_page - 1);
  67          $link = $this->_addPreserved($link);
  68          if ($current_page > 0) {
  69              $html .= Horde::link(Horde::applicationUrl($link), '', 'prev') . htmlspecialchars(_("<Previous")) . '</a>';
  70          }
  71  
  72          // Figure out the top & bottom display limits.
  73          $bottom = max(0, $current_page - ($page_limit / 2) + 1);
  74          $top = $bottom + $page_limit - 1;
  75          if ($top - 1 > $pages) {
  76              $bottom -= ($top - 1) - $pages;
  77              $top = $pages + 1;
  78          }
  79  
  80          // Create bottom '[x-y]' link if necessary.
  81          $link = $this->_addPreserved(Util::addParameter($url, $this->_name, $bottom - 1));
  82          if ($bottom > 0) {
  83              $html .= ' ' . Horde::link(Horde::applicationUrl($link), '', 'prevRange') . '[' . ($bottom == 1 ? $bottom : '1-' . $bottom) . ']</a>';
  84          }
  85  
  86          // Create links to individual pages between limits.
  87          for ($i = $bottom; $i <= $top && $i <= $pages; ++$i) {
  88              if ($i == $current_page) {
  89                  $html .= ' <strong>(' . ($i + 1) . ')</strong>';
  90              } elseif ($i >= 0 && $i <= $pages) {
  91                  $link = $this->_addPreserved(Util::addParameter($url, $this->_name, $i));
  92                  $html .= ' ' . Horde::link(Horde::applicationUrl($link)) . ($i + 1) . '</a>';
  93              }
  94          }
  95  
  96          // Create top '[x-y]' link if necessary.
  97          if ($top < $pages) {
  98              $link = $this->_addPreserved(Util::addParameter($url, $this->_name, $top + 1));
  99              $html .= ' ' . Horde::link(Horde::applicationUrl($link), '', 'nextRange') . '[' .
 100                  ($top + 2 == $pages + 1 ? $pages + 1 : ($top + 2) . '-' . ($pages + 1)) . ']</a>';
 101          }
 102  
 103          // Create the 'Next>>' link if we are not on the last page.
 104          if ($current_page < $pages) {
 105              $link = $this->_addPreserved(Util::addParameter($url, $this->_name, $current_page + 1));
 106              $html .= ' ' . Horde::link(Horde::applicationUrl($link), '', 'next') . htmlspecialchars(_("Next>")) . '</a>';
 107          }
 108  
 109          return $html . '</div>';
 110      }
 111  
 112  }