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915cdb3824
git-svn-id: http://xe-core.googlecode.com/svn/branches/maserati@12693 201d5d3c-b55e-5fd7-737f-ddc643e51545
92 lines
2.2 KiB
PHP
92 lines
2.2 KiB
PHP
<?php
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/**
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* @class PageHandler
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* @author NHN (developers@xpressengine.com)
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* handles page navigation
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* @version 0.1
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*
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* @remarks Getting total counts, number of pages, current page number, number of items per page,
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* this class implements methods and contains variables for page navigation
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*/
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class PageHandler extends Handler
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{
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var $total_count = 0; ///< number of total items
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var $total_page = 0; ///< number of total pages
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var $cur_page = 0; ///< current page number
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var $page_count = 10; ///< number of page links displayed at one time
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var $first_page = 1; ///< first page number
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var $last_page = 1; ///< last page number
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var $point = 0; ///< increments per getNextPage()
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/**
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* constructor
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* @param int $total_count number of total items
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* @param int $total_page number of total pages
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* @param int $cur_page current page number
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* @param int $page_count number of page links displayed at one time
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* @return void
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*/
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function PageHandler($total_count, $total_page, $cur_page, $page_count = 10)
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{
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$this->total_count = $total_count;
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$this->total_page = $total_page;
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$this->cur_page = $cur_page;
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$this->page_count = $page_count;
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$this->point = 0;
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$first_page = $cur_page - (int) ($page_count / 2);
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if($first_page < 1)
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{
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$first_page = 1;
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}
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if($total_page > $page_count && $first_page + $page_count - 1 > $total_page)
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{
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$first_page -= $first_page + $page_count - 1 - $total_page;
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}
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$last_page = $total_page;
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if($last_page > $total_page)
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{
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$last_page = $total_page;
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}
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$this->first_page = $first_page;
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$this->last_page = $last_page;
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if($total_page < $this->page_count)
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{
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$this->page_count = $total_page;
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}
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}
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/**
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* request next page
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* @return int next page number
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*/
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function getNextPage()
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{
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$page = $this->first_page + $this->point++;
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if($this->point > $this->page_count || $page > $this->last_page)
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{
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$page = 0;
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}
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return $page;
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}
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/**
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* return number of page that added offset.
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* @param int $offset
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* @return int
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*/
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function getPage($offset)
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{
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return max(min($this->cur_page + $offset, $this->total_page), '');
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}
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}
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/* End of file PageHandler.class.php */
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/* Location: ./classes/page/PageHandler.class.php */
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