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<?php |
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namespace puck\helpers; |
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class Page { |
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/** |
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* set the number of items per page. |
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* |
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* @var numeric |
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*/ |
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private $_perPage; |
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/** |
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* set get parameter for fetching the page number |
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* |
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* @var string |
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*/ |
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private $_instance; |
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/** |
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* sets the page number. |
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* |
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* @var numeric |
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*/ |
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private $_page; |
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/** |
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* set the limit for the data source |
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* |
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* @var string |
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*/ |
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private $_limit; |
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/** |
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* set the total number of records/items. |
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* |
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* @var numeric |
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*/ |
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private $_totalRows=0; |
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/** |
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* __construct |
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* |
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* pass values when class is istantiated |
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* |
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* @param numeric $perPage sets the number of iteems per page |
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* @param numeric $instance sets the instance for the GET parameter |
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*/ |
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public function __construct($perPage, $instance) { |
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$this->_instance=$instance; |
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$this->_perPage=$perPage; |
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$this->set_instance(); |
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} |
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/** |
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* get_start |
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* |
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* creates the starting point for limiting the dataset |
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* @return numeric |
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*/ |
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public function get_start() { |
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return ($this->_page * $this->_perPage) - $this->_perPage; |
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} |
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/** |
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* set_instance |
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* |
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* sets the instance parameter, if numeric value is 0 then set to 1 |
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* |
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* @var numeric |
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*/ |
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private function set_instance() { |
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$this->_page=(int) (!isset($_GET[$this->_instance]) ? 1 : $_GET[$this->_instance]); |
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$this->_page=($this->_page == 0 ? 1 : $this->_page); |
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} |
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/** |
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* set_total |
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* |
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* collect a numberic value and assigns it to the totalRows |
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* |
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* @var numeric |
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*/ |
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public function set_total($_totalRows) { |
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$this->_totalRows=$_totalRows; |
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} |
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/** |
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* get_limit |
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* |
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* returns the limit for the data source, calling the get_start method and passing in the number of items perp page |
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* |
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* @return string |
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*/ |
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public function get_limit() { |
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return "LIMIT ".$this->get_start().",$this->_perPage"; |
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} |
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private function getParam() { |
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$vars=$_GET; |
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if (isset($vars[$this->_instance])) { |
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unset($vars[$this->_instance]); |
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} |
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$str=http_build_query($vars); |
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$str='&'.$str; |
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return $str; |
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} |
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/** |
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* page_links |
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* |
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* create the html links for navigating through the dataset |
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* |
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* @var sting $path optionally set the path for the link |
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* @var sting $ext optionally pass in extra parameters to the GET |
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* @return string returns the html menu |
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*/ |
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public function page_links($path='?', $ext=null) |
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{ |
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$adjacents="2"; |
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$prev=$this->_page - 1; |
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$next=$this->_page + 1; |
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$lastpage=ceil($this->_totalRows / $this->_perPage); |
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$lpm1=$lastpage - 1; |
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$pagination=""; |
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if ($lastpage > 1) |
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{ |
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if ($ext == null) { |
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$ext=$this->getParam(); |
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} |
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$pagination.="<ul class='pager'>"; |
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if ($this->_page > 1) { |
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$pagination.="<li class='previous'><a href='".$path."$this->_instance=$prev"."$ext'><<</a></li>"; |
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} else { |
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$pagination.="<li class='disabled previous'><span class='disabled'><<</span></li>"; |
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} |
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if ($lastpage < 7 + ($adjacents * 2)) |
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{ |
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for ($counter=1; $counter <= $lastpage; $counter++) |
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{ |
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if ($counter == $this->_page) { |
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$pagination.="<li class='current'><span>$counter</span></li>"; |
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} else { |
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$pagination.="<li><a href='".$path."$this->_instance=$counter"."$ext'>$counter</a></li>"; |
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} |
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} |
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} elseif ($lastpage > 5 + ($adjacents * 2)) |
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{ |
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if ($this->_page < 1 + ($adjacents * 2)) |
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{ |
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for ($counter=1; $counter < 4 + ($adjacents * 2); $counter++) |
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{ |
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if ($counter == $this->_page) { |
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$pagination.="<li class='current'><span>$counter</span></li>"; |
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} else { |
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$pagination.="<li><a href='".$path."$this->_instance=$counter"."$ext'>$counter</a></li>"; |
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} |
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} |
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$pagination.="..."; |
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$pagination.="<li><a href='".$path."$this->_instance=$lpm1"."$ext'>$lpm1</a></li>"; |
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$pagination.="<li><a href='".$path."$this->_instance=$lastpage"."$ext'>$lastpage</a></li>"; |
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} elseif ($lastpage - ($adjacents * 2) > $this->_page && $this->_page > ($adjacents * 2)) |
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{ |
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$pagination.="<li><a href='".$path."$this->_instance=1"."$ext'>1</a></li>"; |
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$pagination.="<li><a href='".$path."$this->_instance=2"."$ext'>2</a></li>"; |
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$pagination.="..."; |
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for ($counter=$this->_page - $adjacents; $counter <= $this->_page + $adjacents; $counter++) |
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{ |
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if ($counter == $this->_page) { |
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$pagination.="<li class='current'><span>$counter</span></li>"; |
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} else { |
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$pagination.="<li><a href='".$path."$this->_instance=$counter"."$ext'>$counter</a></li>"; |
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} |
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} |
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$pagination.=".."; |
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$pagination.="<li><a href='".$path."$this->_instance=$lpm1"."$ext'>$lpm1</a></li>"; |
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$pagination.="<li><a href='".$path."$this->_instance=$lastpage"."$ext'>$lastpage</a></li>"; |
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} else |
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{ |
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$pagination.="<li><a href='".$path."$this->_instance=1"."$ext'>1</a></li>"; |
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$pagination.="<li><a href='".$path."$this->_instance=2"."$ext'>2</a></li>"; |
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$pagination.=".."; |
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for ($counter=$lastpage - (2 + ($adjacents * 2)); $counter <= $lastpage; $counter++) |
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{ |
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if ($counter == $this->_page) { |
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$pagination.="<li class='current'><span>$counter</span></li>"; |
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} else { |
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$pagination.="<li><a href='".$path."$this->_instance=$counter"."$ext'>$counter</a></li>"; |
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} |
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} |
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} |
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} |
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if ($this->_page < $counter - 1) { |
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$pagination.="<li class='next'><a href='".$path."$this->_instance=$next"."$ext'>>></a></li>"; |
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} else { |
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$pagination.="<li class='next disabled'><span class='disabled'>>></span></li>"; |
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} |
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$pagination.="</ul>\n"; |
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} |
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return $pagination; |
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} |
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} |
This check marks private properties in classes that are never used. Those properties can be removed.