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jfr.im git - z_archive/KronOS.git/blob - video/system/libraries/Pagination.php
cdaacf2d423258c5763aac2c0ddb950e101ccc79
1 <?php
if ( ! defined('BASEPATH')) exit('No direct script access allowed');
5 * An open source application development framework for PHP 5.1.6 or newer
8 * @author ExpressionEngine Dev Team
9 * @copyright Copyright (c) 2008 - 2011, EllisLab, Inc.
10 * @license http://codeigniter.com/user_guide/license.html
11 * @link http://codeigniter.com
16 // ------------------------------------------------------------------------
21 * @package CodeIgniter
22 * @subpackage Libraries
23 * @category Pagination
24 * @author ExpressionEngine Dev Team
25 * @link http://codeigniter.com/user_guide/libraries/pagination.html
29 var $base_url = ''; // The page we are linking to
30 var $prefix = ''; // A custom prefix added to the path.
31 var $suffix = ''; // A custom suffix added to the path.
33 var $total_rows = 0; // Total number of items (database results)
34 var $per_page = 10; // Max number of items you want shown per page
35 var $num_links = 2; // Number of "digit" links to show before/after the currently viewed page
36 var $cur_page = 0; // The current page being viewed
37 var $use_page_numbers = FALSE; // Use page number for segment instead of offset
38 var $first_link = '‹ First';
39 var $next_link = '>';
40 var $prev_link = '<';
41 var $last_link = 'Last ›';
43 var $full_tag_open = '';
44 var $full_tag_close = '';
45 var $first_tag_open = '';
46 var $first_tag_close = ' ';
47 var $last_tag_open = ' ';
48 var $last_tag_close = '';
49 var $first_url = ''; // Alternative URL for the First Page.
50 var $cur_tag_open = ' <strong>';
51 var $cur_tag_close = '</strong>';
52 var $next_tag_open = ' ';
53 var $next_tag_close = ' ';
54 var $prev_tag_open = ' ';
55 var $prev_tag_close = '';
56 var $num_tag_open = ' ';
57 var $num_tag_close = '';
58 var $page_query_string = FALSE;
59 var $query_string_segment = 'per_page';
60 var $display_pages = TRUE;
61 var $anchor_class = '';
67 * @param array initialization parameters
69 public function __construct($params = array())
71 if (count($params) > 0)
73 $this->initialize($params);
76 if ($this->anchor_class
!= '')
78 $this->anchor_class
= 'class="'.$this->anchor_class
.'" ';
81 log_message('debug', "Pagination Class Initialized");
84 // --------------------------------------------------------------------
87 * Initialize Preferences
90 * @param array initialization parameters
93 function initialize($params = array())
95 if (count($params) > 0)
97 foreach ($params as $key => $val)
99 if (isset($this->$key))
107 // --------------------------------------------------------------------
110 * Generate the pagination links
115 function create_links()
117 // If our item count or per-page total is zero there is no need to continue.
118 if ($this->total_rows
== 0 OR $this->per_page
== 0)
123 // Calculate the total number of pages
124 $num_pages = ceil($this->total_rows
/ $this->per_page
);
126 // Is there only one page? Hm... nothing more to do here then.
132 // Set the base page index for starting page number
133 if ($this->use_page_numbers
)
142 // Determine the current page number.
143 $CI =& get_instance();
145 if ($CI->config
->item('enable_query_strings') === TRUE OR $this->page_query_string
=== TRUE)
147 if ($CI->input
->get($this->query_string_segment
) != $base_page)
149 $this->cur_page
= $CI->input
->get($this->query_string_segment
);
151 // Prep the current page - no funny business!
152 $this->cur_page
= (int) $this->cur_page
;
157 if ($CI->uri
->segment($this->uri_segment
) != $base_page)
159 $this->cur_page
= $CI->uri
->segment($this->uri_segment
);
161 // Prep the current page - no funny business!
162 $this->cur_page
= (int) $this->cur_page
;
166 // Set current page to 1 if using page numbers instead of offset
167 if ($this->use_page_numbers
AND $this->cur_page
== 0)
169 $this->cur_page
= $base_page;
172 $this->num_links
= (int)$this->num_links
;
174 if ($this->num_links
< 1)
176 show_error('Your number of links must be a positive number.');
179 if ( ! is_numeric($this->cur_page
))
181 $this->cur_page
= $base_page;
184 // Is the page number beyond the result range?
185 // If so we show the last page
186 if ($this->use_page_numbers
)
188 if ($this->cur_page
> $num_pages)
190 $this->cur_page
= $num_pages;
195 if ($this->cur_page
> $this->total_rows
)
197 $this->cur_page
= ($num_pages - 1) * $this->per_page
;
201 $uri_page_number = $this->cur_page
;
203 if ( ! $this->use_page_numbers
)
205 $this->cur_page
= floor(($this->cur_page
/$this->per_page
) +
1);
208 // Calculate the start and end numbers. These determine
209 // which number to start and end the digit links with
210 $start = (($this->cur_page
- $this->num_links
) > 0) ? $this->cur_page
- ($this->num_links
- 1) : 1;
211 $end = (($this->cur_page +
$this->num_links
) < $num_pages) ? $this->cur_page +
$this->num_links
: $num_pages;
213 // Is pagination being used over GET or POST? If get, add a per_page query
214 // string. If post, add a trailing slash to the base URL if needed
215 if ($CI->config
->item('enable_query_strings') === TRUE OR $this->page_query_string
=== TRUE)
217 $this->base_url
= rtrim($this->base_url
).'&'.$this->query_string_segment
.'=';
221 $this->base_url
= rtrim($this->base_url
, '/') .'/';
227 // Render the "First" link
228 if ($this->first_link
!== FALSE AND $this->cur_page
> ($this->num_links +
1))
230 $first_url = ($this->first_url
== '') ? $this->base_url
: $this->first_url
;
231 $output .= $this->first_tag_open
.'<a '.$this->anchor_class
.'href="'.$first_url.'">'.$this->first_link
.'</a>'.$this->first_tag_close
;
234 // Render the "previous" link
235 if ($this->prev_link
!== FALSE AND $this->cur_page
!= 1)
237 if ($this->use_page_numbers
)
239 $i = $uri_page_number - 1;
243 $i = $uri_page_number - $this->per_page
;
246 if ($i == 0 && $this->first_url
!= '')
248 $output .= $this->prev_tag_open
.'<a '.$this->anchor_class
.'href="'.$this->first_url
.'">'.$this->prev_link
.'</a>'.$this->prev_tag_close
;
252 $i = ($i == 0) ? '' : $this->prefix
.$i.$this->suffix
;
253 $output .= $this->prev_tag_open
.'<a '.$this->anchor_class
.'href="'.$this->base_url
.$i.'">'.$this->prev_link
.'</a>'.$this->prev_tag_close
;
259 if ($this->display_pages
!== FALSE)
261 // Write the digit links
262 for ($loop = $start -1; $loop <= $end; $loop++
)
264 if ($this->use_page_numbers
)
270 $i = ($loop * $this->per_page
) - $this->per_page
;
273 if ($i >= $base_page)
275 if ($this->cur_page
== $loop)
277 $output .= $this->cur_tag_open
.$loop.$this->cur_tag_close
; // Current page
281 $n = ($i == $base_page) ? '' : $i;
283 if ($n == '' && $this->first_url
!= '')
285 $output .= $this->num_tag_open
.'<a '.$this->anchor_class
.'href="'.$this->first_url
.'">'.$loop.'</a>'.$this->num_tag_close
;
289 $n = ($n == '') ? '' : $this->prefix
.$n.$this->suffix
;
291 $output .= $this->num_tag_open
.'<a '.$this->anchor_class
.'href="'.$this->base_url
.$n.'">'.$loop.'</a>'.$this->num_tag_close
;
298 // Render the "next" link
299 if ($this->next_link
!== FALSE AND $this->cur_page
< $num_pages)
301 if ($this->use_page_numbers
)
303 $i = $this->cur_page +
1;
307 $i = ($this->cur_page
* $this->per_page
);
310 $output .= $this->next_tag_open
.'<a '.$this->anchor_class
.'href="'.$this->base_url
.$this->prefix
.$i.$this->suffix
.'">'.$this->next_link
.'</a>'.$this->next_tag_close
;
313 // Render the "Last" link
314 if ($this->last_link
!== FALSE AND ($this->cur_page +
$this->num_links
) < $num_pages)
316 if ($this->use_page_numbers
)
322 $i = (($num_pages * $this->per_page
) - $this->per_page
);
324 $output .= $this->last_tag_open
.'<a '.$this->anchor_class
.'href="'.$this->base_url
.$this->prefix
.$i.$this->suffix
.'">'.$this->last_link
.'</a>'.$this->last_tag_close
;
327 // Kill double slashes. Note: Sometimes we can end up with a double slash
328 // in the penultimate link so we'll kill all double slashes.
329 $output = preg_replace("#([^:])//+#", "\\1/", $output);
331 // Add the wrapper HTML if exists
332 $output = $this->full_tag_open
.$output.$this->full_tag_close
;
337 // END Pagination Class
339 /* End of file Pagination.php */
340 /* Location: ./system/libraries/Pagination.php */