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Diffstat (limited to 'system/libraries/Pagination.php')
| -rw-r--r-- | system/libraries/Pagination.php | 207 |
1 files changed, 207 insertions, 0 deletions
diff --git a/system/libraries/Pagination.php b/system/libraries/Pagination.php new file mode 100644 index 000000000..0bbb577a3 --- /dev/null +++ b/system/libraries/Pagination.php @@ -0,0 +1,207 @@ +<?php if (!defined('BASEPATH')) exit('No direct script access allowed'); +/** + * Code Igniter + * + * An open source application development framework for PHP 4.3.2 or newer + * + * @package CodeIgniter + * @author Rick Ellis + * @copyright Copyright (c) 2006, pMachine, Inc. + * @license http://www.codeignitor.com/user_guide/license.html + * @link http://www.codeigniter.com + * @since Version 1.0 + * @filesource + */ + +// ------------------------------------------------------------------------ + +/** + * Pagination Class + * + * @package CodeIgniter + * @subpackage Libraries + * @category Pagination + * @author Rick Ellis + * @link http://www.codeigniter.com/user_guide/libraries/pagination.html + */ +class CI_Pagination { + + var $base_url = ''; // The page we are linking to + var $total_rows = ''; // Total number of items (database results) + var $per_page = 10; // Max number of items you want shown per page + var $num_links = 2; // Number of "digit" links to show before/after the currently viewed page + var $cur_page = 0; // The current page being viewed + var $first_link = '‹ First'; + var $next_link = '>'; + var $prev_link = '<'; + var $last_link = 'Last ›'; + var $uri_segment = 3; + var $full_tag_open = ''; + var $full_tag_close = ''; + var $first_tag_open = ''; + var $first_tag_close = ' '; + var $last_tag_open = ' '; + var $last_tag_close = ''; + var $cur_tag_open = ' <b>'; + var $cur_tag_close = '</b>'; + var $next_tag_open = ' '; + var $next_tag_close = ' '; + var $prev_tag_open = ' '; + var $prev_tag_close = ''; + var $num_tag_open = ' '; + var $num_tag_close = ''; + + /** + * Constructor + * + * @access public + * @param array initialization parameters + */ + function CI_Pagination($params = array()) + { + if (count($params) > 0) + { + $this->initialize($params); + } + + log_message('debug', "Pagination Class Initialized"); + } + + // -------------------------------------------------------------------- + + /** + * Initialize Preferences + * + * @access public + * @param array initialization parameters + * @return void + */ + function initialize($params = array()) + { + if (count($params) > 0) + { + foreach ($params as $key => $val) + { + if (isset($this->$key)) + { + $this->$key = $val; + } + } + } + } + + // -------------------------------------------------------------------- + + /** + * Generate the pagination links + * + * @access public + * @return string + */ + function create_links() + { + // If our item count or per-page total is zero there is no need to continue. + if ($this->total_rows == 0 OR $this->per_page == 0) + { + return ''; + } + + // Calculate the total number of pages + $num_pages = intval($this->total_rows / $this->per_page); + + // Use modulus to see if our division has a remainder.If so, add one to our page number. + if ($this->total_rows % $this->per_page) + { + $num_pages++; + } + + // Is there only one page? Hm... nothing more to do here then. + if ($num_pages == 1) + { + return ''; + } + + // Determine the current page number. + $obj =& get_instance(); + if ($obj->uri->segment($this->uri_segment) != 0) + { + $this->cur_page = $obj->uri->segment($this->uri_segment); + } + + if ( ! ctype_digit($this->cur_page)) + { + $this->cur_page = 0; + } + + $uri_page_number = $this->cur_page; + $this->cur_page = floor(($this->cur_page/$this->per_page) + 1); + + // Calculate the start and end numbers. These determine + // which number to start and end the digit links with + $start = (($this->cur_page - $this->num_links) > 0) ? $this->cur_page - ($this->num_links - 1) : 1; + $end = (($this->cur_page + $this->num_links) < $num_pages) ? $this->cur_page + $this->num_links : $num_pages; + + // Add a trailing slash to the base URL if needed + $this->base_url = preg_replace("/(.+?)\/*$/", "\\1/", $this->base_url); + + // And here we go... + $output = ''; + + // Render the "First" link + if ($this->cur_page > $this->num_links) + { + $output .= $this->first_tag_open.'<a href="'.$this->base_url.'">'.$this->first_link.'</a>'.$this->first_tag_close; + } + + // Render the "previous" link + if (($this->cur_page - $this->num_links) >= 0) + { + $i = $uri_page_number - $this->per_page; + if ($i == 0) $i = ''; + $output .= $this->prev_tag_open.'<a href="'.$this->base_url.$i.'">'.$this->prev_link.'</a>'.$this->prev_tag_close; + } + + // Write the digit links + for ($loop = $start -1; $loop <= $end; $loop++) + { + $i = ($loop * $this->per_page) - $this->per_page; + + if ($i >= 0) + { + if ($this->cur_page == $loop) + { + $output .= $this->cur_tag_open.$loop.$this->cur_tag_close; // Current page + } + else + { + $n = ($i == 0) ? '' : $i; + $output .= $this->num_tag_open.'<a href="'.$this->base_url.$n.'">'.$loop.'</a>'.$this->num_tag_close; + } + } + } + + // Render the "next" link + if ($this->cur_page < $num_pages) + { + $output .= $this->next_tag_open.'<a href="'.$this->base_url.($this->cur_page * $this->per_page).'">'.$this->next_link.'</a>'.$this->next_tag_close; + } + + // Render the "Last" link + if (($this->cur_page + $this->num_links) < $num_pages) + { + $i = (($num_pages * $this->per_page) - $this->per_page); + $output .= $this->last_tag_open.'<a href="'.$this->base_url.$i.'">'.$this->last_link.'</a>'.$this->last_tag_close; + } + + // Kill double slashes. Note: Sometimes we can end up with a double slash + // in the penultimate link so we'll kill all double shashes. + $output = preg_replace("#([^:])//+#", "\\1/", $output); + + // Add the wrapper HTML if exists + $output = $this->full_tag_open.$output.$this->full_tag_close; + + return $output; + } +} +// END Pagination Class +?>
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