PageRenderTime 16ms CodeModel.GetById 1ms app.highlight 11ms RepoModel.GetById 1ms app.codeStats 0ms

/halogy/libraries/Pagination.php

https://bitbucket.org/haloweb/halogy-1.0/
PHP | 244 lines | 143 code | 33 blank | 68 comment | 30 complexity | 8a691beb77b10117546ac274c63fb702 MD5 | raw file
  1<?php  if ( ! defined('BASEPATH')) exit('No direct script access allowed');
  2/**
  3 * CodeIgniter
  4 *
  5 * An open source application development framework for PHP 4.3.2 or newer
  6 *
  7 * @package		CodeIgniter
  8 * @author		ExpressionEngine Dev Team
  9 * @copyright	Copyright (c) 2008 - 2009, EllisLab, Inc.
 10 * @license		http://codeigniter.com/user_guide/license.html
 11 * @link		http://codeigniter.com
 12 * @since		Version 1.0
 13 * @filesource
 14 */
 15
 16// ------------------------------------------------------------------------
 17
 18/**
 19 * Pagination Class
 20 *
 21 * @package		CodeIgniter
 22 * @subpackage	Libraries
 23 * @category	Pagination
 24 * @author		ExpressionEngine Dev Team
 25 * @link		http://codeigniter.com/user_guide/libraries/pagination.html
 26 */
 27class CI_Pagination {
 28
 29	var $base_url			= ''; // The page we are linking to
 30	var $total_rows  		= ''; // Total number of items (database results)
 31	var $per_page	 		= 10; // Max number of items you want shown per page
 32	var $num_links			=  2; // Number of "digit" links to show before/after the currently viewed page
 33	var $cur_page	 		=  0; // The current page being viewed
 34	var $first_link   		= '&lsaquo; First';
 35	var $next_link			= '&gt;';
 36	var $prev_link			= '&lt;';
 37	var $last_link			= 'Last &rsaquo;';
 38	var $uri_segment		= 3;
 39	var $full_tag_open		= '';
 40	var $full_tag_close		= '';
 41	var $first_tag_open		= '';
 42	var $first_tag_close	= '&nbsp;';
 43	var $last_tag_open		= '&nbsp;';
 44	var $last_tag_close		= '';
 45	var $cur_tag_open		= '&nbsp;<strong>';
 46	var $cur_tag_close		= '</strong>';
 47	var $next_tag_open		= '&nbsp;';
 48	var $next_tag_close		= '&nbsp;';
 49	var $prev_tag_open		= '&nbsp;';
 50	var $prev_tag_close		= '';
 51	var $num_tag_open		= '&nbsp;';
 52	var $num_tag_close		= '';
 53	var $page_query_string	= FALSE;
 54	var $query_string_segment = 'per_page';
 55
 56	/**
 57	 * Constructor
 58	 *
 59	 * @access	public
 60	 * @param	array	initialization parameters
 61	 */
 62	function CI_Pagination($params = array())
 63	{
 64		if (count($params) > 0)
 65		{
 66			$this->initialize($params);
 67		}
 68
 69		log_message('debug', "Pagination Class Initialized");
 70	}
 71
 72	// --------------------------------------------------------------------
 73
 74	/**
 75	 * Initialize Preferences
 76	 *
 77	 * @access	public
 78	 * @param	array	initialization parameters
 79	 * @return	void
 80	 */
 81	function initialize($params = array())
 82	{
 83		if (count($params) > 0)
 84		{
 85			foreach ($params as $key => $val)
 86			{
 87				if (isset($this->$key))
 88				{
 89					$this->$key = $val;
 90				}
 91			}
 92		}
 93	}
 94
 95	// --------------------------------------------------------------------
 96
 97	/**
 98	 * Generate the pagination links
 99	 *
100	 * @access	public
101	 * @return	string
102	 */
103	function create_links()
104	{
105		// If our item count or per-page total is zero there is no need to continue.
106		if ($this->total_rows == 0 OR $this->per_page == 0)
107		{
108			return '';
109		}
110
111		// Calculate the total number of pages
112		$num_pages = ceil($this->total_rows / $this->per_page);
113
114		// Is there only one page? Hm... nothing more to do here then.
115		if ($num_pages == 1)
116		{
117			return '';
118		}
119
120		// Determine the current page number.
121		$CI =& get_instance();
122
123		if ($CI->config->item('enable_query_strings') === TRUE OR $this->page_query_string === TRUE)
124		{
125			if ($CI->input->get($this->query_string_segment) != 0)
126			{
127				$this->cur_page = $CI->input->get($this->query_string_segment);
128
129				// Prep the current page - no funny business!
130				$this->cur_page = (int) $this->cur_page;
131			}
132		}
133		else
134		{
135			if ($CI->uri->segment($this->uri_segment) != 0)
136			{
137				$this->cur_page = $CI->uri->segment($this->uri_segment);
138
139				// Prep the current page - no funny business!
140				$this->cur_page = (int) $this->cur_page;
141			}
142		}
143
144		$this->num_links = (int)$this->num_links;
145
146		if ($this->num_links < 1)
147		{
148			show_error('Your number of links must be a positive number.');
149		}
150
151		if ( ! is_numeric($this->cur_page))
152		{
153			$this->cur_page = 0;
154		}
155
156		// Is the page number beyond the result range?
157		// If so we show the last page
158		if ($this->cur_page > $this->total_rows)
159		{
160			$this->cur_page = ($num_pages - 1) * $this->per_page;
161		}
162
163		$uri_page_number = $this->cur_page;
164		$this->cur_page = floor(($this->cur_page/$this->per_page) + 1);
165
166		// Calculate the start and end numbers. These determine
167		// which number to start and end the digit links with
168		$start = (($this->cur_page - $this->num_links) > 0) ? $this->cur_page - ($this->num_links - 1) : 1;
169		$end   = (($this->cur_page + $this->num_links) < $num_pages) ? $this->cur_page + $this->num_links : $num_pages;
170
171		// Is pagination being used over GET or POST?  If get, add a per_page query
172		// string. If post, add a trailing slash to the base URL if needed
173		if ($CI->config->item('enable_query_strings') === TRUE OR $this->page_query_string === TRUE)
174		{
175			$this->base_url = rtrim($this->base_url).'&amp;'.$this->query_string_segment.'=';
176		}
177		else
178		{
179			$this->base_url = rtrim($this->base_url, '/') .'/';
180		}
181
182  		// And here we go...
183		$output = '';
184
185		// Render the "First" link
186		if  ($this->cur_page > ($this->num_links + 1))
187		{
188			$output .= $this->first_tag_open.'<a href="'.$this->base_url.'">'.$this->first_link.'</a>'.$this->first_tag_close;
189		}
190
191		// Render the "previous" link
192		if  ($this->cur_page != 1)
193		{
194			$i = $uri_page_number - $this->per_page;
195			if ($i == 0) $i = '';
196			$output .= $this->prev_tag_open.'<a href="'.$this->base_url.$i.'">'.$this->prev_link.'</a>'.$this->prev_tag_close;
197		}
198
199		// Write the digit links
200		for ($loop = $start -1; $loop <= $end; $loop++)
201		{
202			$i = ($loop * $this->per_page) - $this->per_page;
203
204			if ($i >= 0)
205			{
206				if ($this->cur_page == $loop)
207				{
208					$output .= $this->cur_tag_open.$loop.$this->cur_tag_close; // Current page
209				}
210				else
211				{
212					$n = ($i == 0) ? '' : $i;
213					$output .= $this->num_tag_open.'<a href="'.$this->base_url.$n.'">'.$loop.'</a>'.$this->num_tag_close;
214				}
215			}
216		}
217
218		// Render the "next" link
219		if ($this->cur_page < $num_pages)
220		{
221			$output .= $this->next_tag_open.'<a href="'.$this->base_url.($this->cur_page * $this->per_page).'">'.$this->next_link.'</a>'.$this->next_tag_close;
222		}
223
224		// Render the "Last" link
225		if (($this->cur_page + $this->num_links) < $num_pages)
226		{
227			$i = (($num_pages * $this->per_page) - $this->per_page);
228			$output .= $this->last_tag_open.'<a href="'.$this->base_url.$i.'">'.$this->last_link.'</a>'.$this->last_tag_close;
229		}
230
231		// Kill double slashes.  Note: Sometimes we can end up with a double slash
232		// in the penultimate link so we'll kill all double slashes.
233		$output = preg_replace("#([^:])//+#", "\\1/", $output);
234
235		// Add the wrapper HTML if exists
236		$output = $this->full_tag_open.$output.$this->full_tag_close;
237
238		return $output;
239	}
240}
241// END Pagination Class
242
243/* End of file Pagination.php */
244/* Location: ./system/libraries/Pagination.php */