_res/_libs/tspaginator.class.php

   1 <?php
   2 // the url variable
   3 define ('PAG_VAR', 'pag');
   4 define ('PAG_COUNT', 3);//
   5 define ('PAG_ORDER', 'o');
   6 /**
   7  * @desc Decorator class for tdoAbstract
   8  */
   9
  10 class tsPaginator {
  11         private $start, $count, $total, $page, $order;
  12         /**
  13          * @var tdoAbstract
  14          */
  15         protected $tdo;
  16
  17         public function __construct () {
  18                 $this->getPaginationVariables ();
  19         }
  20         public function __destruct () {}
  21
  22         public function setCount ($int) {
  23                 $this->count = $int;
  24                 $this->start = $this->getStart();
  25         }
  26
  27         public function outputOrderHeaders () {
  28                 return;
  29         }
  30
  31         public function outputPagination () {
  32                 $retVal = $left = $right = '';
  33                 // this should happen after we made all our stuff with the tdo (joins, wheres, orders..bla)
  34                 // how many stuff we got
  35                 $t = $this->getTotal();
  36                 $cnt    = ceil ($this->getTotal () / $this->count);
  37                 $here   = tsController::getRequest(NAV_VAR);
  38
  39                 for ($i=1; $i <= $cnt; $i++) {
  40                         $r = tsController::setRequest($here, array(PAG_VAR => $i));
  41                         if ($i != $this->page)
  42                                 $retVal .= '<a href="' . tsController::setRequest($here, array(PAG_VAR => $i)) . '">'.$i.'</a> ';
  43                         else
  44                                 $retVal .= $i.' ';
  45                 }
  46
  47                 if ($this->page > 1)
  48                         $left   = '<a href="'.tsController::setRequest($here, array (PAG_VAR => $this->page-1)).'">&laquo;</a> ';
  49
  50                 if ($this->page < $cnt)
  51                         $right  = '<a href="'.tsController::setRequest($here, array (PAG_VAR => $this->page+1)).'">&raquo;</a>';;
  52
  53                 return $left . $retVal . $right;
  54         }
  55
  56         public function addObject (&$object) {
  57                 if (!($object instanceof tdoAbstract))
  58                         return false;
  59                 $this->tdo = &$object;
  60
  61                 if (!empty ($this->order))
  62                         $this->addOrder ();
  63 //              if (!empty ($this->start))
  64                         $this->addLimit ();
  65         }
  66
  67         protected function getTotal () {
  68                 // getting the number of elements
  69                 if (empty ($this->total) && ($this->tdo instanceof tdoAbstract)) {
  70                         $this->total = (int)$this->tdo->getCount ();
  71                 }
  72                 return (int)$this->total;
  73         }
  74
  75         protected function getStart () {
  76                 if ((int)$this->page <= 0 /*/||
  77                         (int)$this->start > $this->getTotal()/**/
  78                 ) {
  79                         $this->page = 1;
  80                 }
  81 //              $this->start =
  82                 // calculate the limit based on $total count of items and the pagination
  83                 return $this->count * ($this->page-1) /*/+ 1/**/;//$this->start;
  84         }
  85
  86         protected function getPaginationVariables () {
  87                 // get the page variables: URL?p=?
  88                 if (empty($this->count))
  89                         $this->count = PAG_COUNT;
  90
  91                 $this->page             = (int)tsController::getRequest (PAG_VAR);
  92
  93                 $this->start    = $this->getStart ();
  94
  95                 // get the ORDER BY variables: URL?o=column_name:(bool)ASC
  96                 $o = tsController::getRequest (PAG_ORDER);
  97
  98                 if (!empty ($o))
  99                         $this->order    = explode (':', $o);
 100
 101         }
 102
 103         protected function addOrder () {
 104                 // this is dumb as it requires a column name to comre from user input
 105                 if ($this->tdo instanceof tdoAbstract && !empty ($this->order)) {
 106                         $fieldName = $this->order[0];
 107                         $order = (bool)$this->order[1];  // if we have no value we treat it as DESC
 108
 109 //                      $this->tdo->addOrder ($fieldName, $order);
 110                 }
 111         }
 112
 113         protected function addLimit () {
 114 //              var_dump($this->start, $this->count);
 115                 if ($this->tdo instanceof tdoAbstract) {
 116                         $this->tdo->addLimit ($this->start, $this->count);
 117                 }
 118         }
 119 }