/lib/class_paginate.php

<?php

  /**

   * Class Pagination

   *

   * @package CMS pro

   * @author prolificscripts.com

   * @copyright 2014

   * @version $Id: class_paginate.php, v1.00 2012-03-05 10:12:05 gewa Exp $

   */

  if (!defined("_VALID_PHP"))

      die('Direct access to this location is not allowed.');

  

  class Paginator

  {

      public $items_per_page;

      public $items_total;

      public $num_pages = 1;

      public $limit;

	  public $current_page;

      public $default_ipp;

	  public $path = 0;

	  public $path_after;

      private $mid_range;

      private $low;

      private $high;

      private $retdata;

      private $querystring;

	  private static $instance; 

      

      

      /**

       * Paginator::__construct()

       * 

       * @return

       */

      private function __construct()

      {

          $this->current_page = 1;

          $this->mid_range = 7;

          $this->items_per_page = (isset($_GET['ipp']) and !empty($_GET['ipp'])) ? sanitize($_GET['ipp']) : $this->default_ipp;

      }



      /**

       * Paginator::instance()

       * 

       * @return

       */

	  public static function instance(){

		  if (!self::$instance){ 

			  self::$instance = new Paginator(); 

		  } 

	  

		  return self::$instance;  

	  }

	     

      /**

       * Paginator::paginate()

       * 

       * @return

       */

      public function paginate()

      {	

		  $this->items_per_page = (isset($_GET['ipp']) and !empty($_GET['ipp'])) ? intval($_GET['ipp']) : $this->default_ipp;

          $this->num_pages = ceil($this->items_total / $this->items_per_page);

          

          $this->current_page = intval(sanitize(get('pg')));

          if ($this->current_page < 1 or !is_numeric($this->current_page))

              $this->current_page = 1;

          if ($this->current_page > $this->num_pages)

              $this->current_page = $this->num_pages;

          $prev_page = $this->current_page - 1;

          $next_page = $this->current_page + 1;

          

          if (isset($_GET)) {

              $args = explode("&", $_SERVER['QUERY_STRING']);

              foreach ($args as $arg) {

                  $keyval = explode("=", $arg);

                  if ($keyval[0] != "pg" && $keyval[0] != "ipp")

                      $this->querystring .= "&" . sanitize($arg);

              }

          }

          

          if (isset($_POST)) {

              foreach ($_POST as $key => $val) {

                  if ($key != "pg" && $key != "ipp")

                      $this->querystring .= "&amp;$key=" . sanitize($val);

              }

          }

          

          if ($this->num_pages > 1) {

              if ($this->current_page != 1 && $this->items_total >= $this->default_ipp) {

                  if ($this->path) {

					  $this->retdata = "<a class=\"item\" href=\"".$this->path."pg=".$prev_page."{$this->path_after}\"><i class=\"icon left arrow\"></i></a>";

                  } else {

                      $this->retdata = "<a class=\"item\" href=\"" . phpself() . "?pg=$prev_page&amp;ipp=$this->items_per_page$this->querystring\"><i class=\"icon left arrow\"></i></a>";

                  }

              } else {

                  $this->retdata = "<a class=\"disabled item\"><i class=\"icon left arrow\"></i></a>";

              }

              

              $this->start_range = $this->current_page - floor($this->mid_range / 2);

              $this->end_range = $this->current_page + floor($this->mid_range / 2);

              

              if ($this->start_range <= 0) {

                  $this->end_range += abs($this->start_range) + 1;

                  $this->start_range = 1;

              }

              if ($this->end_range > $this->num_pages) {

                  $this->start_range -= $this->end_range - $this->num_pages;

                  $this->end_range = $this->num_pages;

              }

              $this->range = range($this->start_range, $this->end_range);

              

              for ($i = 1; $i <= $this->num_pages; $i++) {

                  if ($this->range[0] > 2 && $i == $this->range[0])

                      $this->retdata .= "<a class=\"disabled item\"> ... </a>";



                  if ($i == 1 or $i == $this->num_pages or in_array($i, $this->range)) {

                      if ($i == $this->current_page) {

                          $this->retdata .= "<a title=\"" . Lang::$word->_PAG_GOTO . $i . Lang::$word->_PAG_OF . $this->num_pages . "\" class=\"active item\">$i</a>";

                      } else {

                          if ($this->path) {

							  $this->retdata .= "<a class=\"item\" title=\"Go To $i of $this->num_pages\" href=\"".$this->path."pg=$i{$this->path_after}\">$i</a>";

                          } else {

                              $this->retdata .= "<a class=\"item\" title=\"Go To $i of $this->num_pages\" href=\"" . phpself() . "?pg=$i&amp;ipp=$this->items_per_page$this->querystring\">$i</a>";

                          }

                      }

                  }



                  if ($this->range[$this->mid_range - 1] < $this->num_pages - 1 && $i == $this->range[$this->mid_range - 1])

                      $this->retdata .= "<a class=\"disabled item\"> ... </a>";

              }



              if ($this->current_page != $this->num_pages && $this->items_total >= $this->default_ipp) {

                  if ($this->path) {

					  $this->retdata .= "<a class=\"item\" href=\"".$this->path."pg=".$next_page."{$this->path_after}\"><i class=\"icon right arrow\"></i></a>";

                  } else {

                      $this->retdata .= "<a class=\"item\" href=\"" . phpself() . "?pg=$next_page&amp;ipp=$this->items_per_page$this->querystring\"><i class=\"icon right arrow\"></i></a>\n";

                  }

              } else {

                  $this->retdata .= "<a class=\"disabled item\"><i class=\"icon right arrow\"></i></a>";

              }

			  

          } else {

              for ($i = 1; $i <= $this->num_pages; $i++) {

                  if ($i == $this->current_page) {

                      $this->retdata .= "<a class=\"active item\">$i</a>";

                  } else {

					  if ($this->path) {

						  $this->retdata .= "<a class=\"item\" href=\"".$this->path . "pg=$i{$this->path_after}\">$i</a>";

					  } else {

                          $this->retdata .= "<a class=\"item\" href=\"" . phpself() . "?pg=$i&amp;ipp=$this->items_per_page$this->querystring\">$i</a>";

					  }

                  }

              }

          }

          $this->low = ($this->current_page - 1) * $this->items_per_page;

          $this->high = $this->current_page * $this->items_per_page - 1;

          $this->limit = ($this->items_total == 0) ? '' : " LIMIT $this->low,$this->items_per_page";

      }

      

      /**

       * Paginator::items_per_page()

       * 

       * @return

       */

      public function items_per_page()

      {

          $items = '';

          $ipp_array = array(10, 25, 50, 75, 100);

		  $items .= "<option  value=\"\">" . Lang::$word->_PAG_IPP . "</option>";

          foreach ($ipp_array as $ipp_opt)

              $items .= ($ipp_opt == $this->items_per_page) ? "<option selected=\"selected\" value=\"$ipp_opt\">$ipp_opt</option>\n" : "<option value=\"$ipp_opt\">$ipp_opt</option>\n";

          return ($this->num_pages >= 1) ? "<select class=\"selectbox\" onchange=\"window.location='" . phpself() . "?pg=1&amp;ipp='+this[this.selectedIndex].value+'$this->querystring';return false\">$items</select>\n" : '';

      }

      

      /**

       * Paginator::jump_menu()

       * 

       * @return

       */

      public function jump_menu()

      {

          $option = '';

		  $option .= "<option  value=\"\">" . Lang::$word->_PAG_GOTO . "</option>";

          for ($i = 1; $i <= $this->num_pages; $i++) {

              $option .= ($i == $this->current_page) ? "<option value=\"$i\" selected=\"selected\">$i</option>\n" : "<option value=\"$i\">$i</option>\n";

          }

          return ($this->num_pages >= 1) ? "<select class=\"selectbox\" onchange=\"window.location='" . phpself() . "?pg='+this[this.selectedIndex].value+'&amp;ipp=$this->items_per_page$this->querystring';return false\">$option</select>\n" : '';

      }

      

      /**

       * Paginator::display_pages()

       * 

       * @return

       */

      public function display_pages()

      {

          return($this->items_total > $this->items_per_page) ? '<div class="prolific pagination menu">' . $this->retdata . '</div>' : "";

      }

  }

?>