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  • Committer: Gustav Hatvigsson
  • Date: 2013-04-11 09:20:09 UTC
  • mfrom: (19.1.5 lenasys)
  • Revision ID: gustav.hartvigsson@gmail.com-20130411092009-ylcqzqwcmjdglb17
merged in implemetaion group one's team bransh, it contains code-ignighter
and the new admin-panel.
20130411

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codeigniter/system/libraries/Pagination.php
 
1
<?php  if ( ! defined('BASEPATH')) exit('No direct script access allowed');
 
2
/**
 
3
 * CodeIgniter
 
4
 *
 
5
 * An open source application development framework for PHP 5.1.6 or newer
 
6
 *
 
7
 * @package             CodeIgniter
 
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
 
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
 */
 
27
class CI_Pagination {
 
28
 
 
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.
 
32
 
 
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                 = '&lsaquo; First';
 
39
        var $next_link                  = '&gt;';
 
40
        var $prev_link                  = '&lt;';
 
41
        var $last_link                  = 'Last &rsaquo;';
 
42
        var $uri_segment                = 3;
 
43
        var $full_tag_open              = '';
 
44
        var $full_tag_close             = '';
 
45
        var $first_tag_open             = '';
 
46
        var $first_tag_close    = '&nbsp;';
 
47
        var $last_tag_open              = '&nbsp;';
 
48
        var $last_tag_close             = '';
 
49
        var $first_url                  = ''; // Alternative URL for the First Page.
 
50
        var $cur_tag_open               = '&nbsp;<strong>';
 
51
        var $cur_tag_close              = '</strong>';
 
52
        var $next_tag_open              = '&nbsp;';
 
53
        var $next_tag_close             = '&nbsp;';
 
54
        var $prev_tag_open              = '&nbsp;';
 
55
        var $prev_tag_close             = '';
 
56
        var $num_tag_open               = '&nbsp;';
 
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               = '';
 
62
 
 
63
        /**
 
64
         * Constructor
 
65
         *
 
66
         * @access      public
 
67
         * @param       array   initialization parameters
 
68
         */
 
69
        public function __construct($params = array())
 
70
        {
 
71
                if (count($params) > 0)
 
72
                {
 
73
                        $this->initialize($params);
 
74
                }
 
75
 
 
76
                if ($this->anchor_class != '')
 
77
                {
 
78
                        $this->anchor_class = 'class="'.$this->anchor_class.'" ';
 
79
                }
 
80
 
 
81
                log_message('debug', "Pagination Class Initialized");
 
82
        }
 
83
 
 
84
        // --------------------------------------------------------------------
 
85
 
 
86
        /**
 
87
         * Initialize Preferences
 
88
         *
 
89
         * @access      public
 
90
         * @param       array   initialization parameters
 
91
         * @return      void
 
92
         */
 
93
        function initialize($params = array())
 
94
        {
 
95
                if (count($params) > 0)
 
96
                {
 
97
                        foreach ($params as $key => $val)
 
98
                        {
 
99
                                if (isset($this->$key))
 
100
                                {
 
101
                                        $this->$key = $val;
 
102
                                }
 
103
                        }
 
104
                }
 
105
        }
 
106
 
 
107
        // --------------------------------------------------------------------
 
108
 
 
109
        /**
 
110
         * Generate the pagination links
 
111
         *
 
112
         * @access      public
 
113
         * @return      string
 
114
         */
 
115
        function create_links()
 
116
        {
 
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)
 
119
                {
 
120
                        return '';
 
121
                }
 
122
 
 
123
                // Calculate the total number of pages
 
124
                $num_pages = ceil($this->total_rows / $this->per_page);
 
125
 
 
126
                // Is there only one page? Hm... nothing more to do here then.
 
127
                if ($num_pages == 1)
 
128
                {
 
129
                        return '';
 
130
                }
 
131
 
 
132
                // Set the base page index for starting page number
 
133
                if ($this->use_page_numbers)
 
134
                {
 
135
                        $base_page = 1;
 
136
                }
 
137
                else
 
138
                {
 
139
                        $base_page = 0;
 
140
                }
 
141
 
 
142
                // Determine the current page number.
 
143
                $CI =& get_instance();
 
144
 
 
145
                if ($CI->config->item('enable_query_strings') === TRUE OR $this->page_query_string === TRUE)
 
146
                {
 
147
                        if ($CI->input->get($this->query_string_segment) != $base_page)
 
148
                        {
 
149
                                $this->cur_page = $CI->input->get($this->query_string_segment);
 
150
 
 
151
                                // Prep the current page - no funny business!
 
152
                                $this->cur_page = (int) $this->cur_page;
 
153
                        }
 
154
                }
 
155
                else
 
156
                {
 
157
                        if ($CI->uri->segment($this->uri_segment) != $base_page)
 
158
                        {
 
159
                                $this->cur_page = $CI->uri->segment($this->uri_segment);
 
160
 
 
161
                                // Prep the current page - no funny business!
 
162
                                $this->cur_page = (int) $this->cur_page;
 
163
                        }
 
164
                }
 
165
                
 
166
                // Set current page to 1 if using page numbers instead of offset
 
167
                if ($this->use_page_numbers AND $this->cur_page == 0)
 
168
                {
 
169
                        $this->cur_page = $base_page;
 
170
                }
 
171
 
 
172
                $this->num_links = (int)$this->num_links;
 
173
 
 
174
                if ($this->num_links < 1)
 
175
                {
 
176
                        show_error('Your number of links must be a positive number.');
 
177
                }
 
178
 
 
179
                if ( ! is_numeric($this->cur_page))
 
180
                {
 
181
                        $this->cur_page = $base_page;
 
182
                }
 
183
 
 
184
                // Is the page number beyond the result range?
 
185
                // If so we show the last page
 
186
                if ($this->use_page_numbers)
 
187
                {
 
188
                        if ($this->cur_page > $num_pages)
 
189
                        {
 
190
                                $this->cur_page = $num_pages;
 
191
                        }
 
192
                }
 
193
                else
 
194
                {
 
195
                        if ($this->cur_page > $this->total_rows)
 
196
                        {
 
197
                                $this->cur_page = ($num_pages - 1) * $this->per_page;
 
198
                        }
 
199
                }
 
200
 
 
201
                $uri_page_number = $this->cur_page;
 
202
                
 
203
                if ( ! $this->use_page_numbers)
 
204
                {
 
205
                        $this->cur_page = floor(($this->cur_page/$this->per_page) + 1);
 
206
                }
 
207
 
 
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;
 
212
 
 
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)
 
216
                {
 
217
                        $this->base_url = rtrim($this->base_url).'&amp;'.$this->query_string_segment.'=';
 
218
                }
 
219
                else
 
220
                {
 
221
                        $this->base_url = rtrim($this->base_url, '/') .'/';
 
222
                }
 
223
 
 
224
                // And here we go...
 
225
                $output = '';
 
226
 
 
227
                // Render the "First" link
 
228
                if  ($this->first_link !== FALSE AND $this->cur_page > ($this->num_links + 1))
 
229
                {
 
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;
 
232
                }
 
233
 
 
234
                // Render the "previous" link
 
235
                if  ($this->prev_link !== FALSE AND $this->cur_page != 1)
 
236
                {
 
237
                        if ($this->use_page_numbers)
 
238
                        {
 
239
                                $i = $uri_page_number - 1;
 
240
                        }
 
241
                        else
 
242
                        {
 
243
                                $i = $uri_page_number - $this->per_page;
 
244
                        }
 
245
 
 
246
                        if ($i == 0 && $this->first_url != '')
 
247
                        {
 
248
                                $output .= $this->prev_tag_open.'<a '.$this->anchor_class.'href="'.$this->first_url.'">'.$this->prev_link.'</a>'.$this->prev_tag_close;
 
249
                        }
 
250
                        else
 
251
                        {
 
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;
 
254
                        }
 
255
 
 
256
                }
 
257
 
 
258
                // Render the pages
 
259
                if ($this->display_pages !== FALSE)
 
260
                {
 
261
                        // Write the digit links
 
262
                        for ($loop = $start -1; $loop <= $end; $loop++)
 
263
                        {
 
264
                                if ($this->use_page_numbers)
 
265
                                {
 
266
                                        $i = $loop;
 
267
                                }
 
268
                                else
 
269
                                {
 
270
                                        $i = ($loop * $this->per_page) - $this->per_page;
 
271
                                }
 
272
 
 
273
                                if ($i >= $base_page)
 
274
                                {
 
275
                                        if ($this->cur_page == $loop)
 
276
                                        {
 
277
                                                $output .= $this->cur_tag_open.$loop.$this->cur_tag_close; // Current page
 
278
                                        }
 
279
                                        else
 
280
                                        {
 
281
                                                $n = ($i == $base_page) ? '' : $i;
 
282
 
 
283
                                                if ($n == '' && $this->first_url != '')
 
284
                                                {
 
285
                                                        $output .= $this->num_tag_open.'<a '.$this->anchor_class.'href="'.$this->first_url.'">'.$loop.'</a>'.$this->num_tag_close;
 
286
                                                }
 
287
                                                else
 
288
                                                {
 
289
                                                        $n = ($n == '') ? '' : $this->prefix.$n.$this->suffix;
 
290
 
 
291
                                                        $output .= $this->num_tag_open.'<a '.$this->anchor_class.'href="'.$this->base_url.$n.'">'.$loop.'</a>'.$this->num_tag_close;
 
292
                                                }
 
293
                                        }
 
294
                                }
 
295
                        }
 
296
                }
 
297
 
 
298
                // Render the "next" link
 
299
                if ($this->next_link !== FALSE AND $this->cur_page < $num_pages)
 
300
                {
 
301
                        if ($this->use_page_numbers)
 
302
                        {
 
303
                                $i = $this->cur_page + 1;
 
304
                        }
 
305
                        else
 
306
                        {
 
307
                                $i = ($this->cur_page * $this->per_page);
 
308
                        }
 
309
 
 
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;
 
311
                }
 
312
 
 
313
                // Render the "Last" link
 
314
                if ($this->last_link !== FALSE AND ($this->cur_page + $this->num_links) < $num_pages)
 
315
                {
 
316
                        if ($this->use_page_numbers)
 
317
                        {
 
318
                                $i = $num_pages;
 
319
                        }
 
320
                        else
 
321
                        {
 
322
                                $i = (($num_pages * $this->per_page) - $this->per_page);
 
323
                        }
 
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;
 
325
                }
 
326
 
 
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);
 
330
 
 
331
                // Add the wrapper HTML if exists
 
332
                $output = $this->full_tag_open.$output.$this->full_tag_close;
 
333
 
 
334
                return $output;
 
335
        }
 
336
}
 
337
// END Pagination Class
 
338
 
 
339
/* End of file Pagination.php */
 
340
/* Location: ./system/libraries/Pagination.php */
 
 
b'\\ No newline at end of file'