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<?php
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namespace Win\DAO;
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use Win\Mvc\Block;
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/**
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* Paginação
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* Auxilia busca por paginação
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*/
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class Pagination {
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private $total = 0;
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private $totalPerPage = null;
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private $last = null;
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private $current;
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/** Construtor */
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public function __construct($totalPerPage = null, $current = null) {
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$this->totalPerPage = $totalPerPage;
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$this->setCurrent($current);
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}
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/** @return int */
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public function totalPerPage() {
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return $this->totalPerPage;
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}
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/** @return int */
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public function current() {
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if ($this->current > $this->last() && !is_null($this->last)) {
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$this->current = $this->last();
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}
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if ($this->current < $this->first()) {
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$this->current = $this->first();
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}
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return $this->current;
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}
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/** @return int */
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public function prev() {
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return ($this->current > $this->first()) ? ($this->current - 1) : $this->first();
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}
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/** @return int */
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public function next() {
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return ($this->current < $this->last) ? ($this->current + 1) : $this->last();
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}
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/** @return int */
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public function first() {
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return 1;
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}
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/** @return int */
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public function last() {
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return $this->last;
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}
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/** @param int $total */
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public function setTotal($total) {
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if ($this->totalPerPage > 0) {
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$this->total = $total;
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$this->last = ceil($total / $this->totalPerPage);
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}
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}
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/** @param int $current */
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public function setCurrent($current) {
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if (is_null($current) && isset($_GET['p'])) {
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$current = $_GET['p'];
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}
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$this->current = $current;
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}
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/** @return string */
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public function toSql() {
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if (!is_null($this->totalPerPage)) {
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$begin = $this->totalPerPage * ($this->current() - 1);
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return ' LIMIT ' . $begin . ',' . $this->totalPerPage;
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}
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return '';
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}
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/** @return string */
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public function toHtml() {
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return (string) new Block('layout/html/pagination', ['pagination' => $this]);
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}
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}
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winframework /
winphp
