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1 | <?php |
2 | /*************************************************************************** |
3 | * Copyright (C) 2003-2007 Polytechnique.org * |
4 | * http://opensource.polytechnique.org/ * |
5 | * * |
6 | * This program is free software; you can redistribute it and/or modify * |
7 | * it under the terms of the GNU General Public License as published by * |
8 | * the Free Software Foundation; either version 2 of the License, or * |
9 | * (at your option) any later version. * |
10 | * * |
11 | * This program is distributed in the hope that it will be useful, * |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of * |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * |
14 | * GNU General Public License for more details. * |
15 | * * |
16 | * You should have received a copy of the GNU General Public License * |
17 | * along with this program; if not, write to the Free Software * |
18 | * Foundation, Inc., * |
19 | * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA * |
20 | ***************************************************************************/ |
21 | |
22 | /** UserSet is a light-weight Model/View tool for displaying a set of items |
23 | */ |
24 | class PlSet |
25 | { |
26 | private $from = null; |
27 | private $groupby = null; |
28 | private $joins = null; |
29 | private $where = null; |
30 | |
31 | private $count = null; |
32 | |
33 | private $mods = array(); |
34 | private $modParams = array(); |
35 | private $mod = null; |
36 | private $default = null; |
37 | |
38 | public function __construct($from, $joins = '', $where = '', $groupby = '') |
39 | { |
40 | $this->from = $from; |
41 | $this->joins = $joins; |
42 | $this->where = $where; |
43 | $this->groupby = $groupby; |
44 | } |
45 | |
46 | public function addMod($name, $description, $default = false, array $params = array()) |
47 | { |
48 | $name = strtolower($name); |
49 | $this->mods[$name] = $description; |
50 | $this->modParams[$name] = $params; |
51 | if ($default) { |
52 | $this->default = $name; |
53 | } |
54 | } |
55 | |
56 | public function rmMod($name) |
57 | { |
58 | $name = strtolower($name); |
59 | unset($this->mods[$name]); |
60 | } |
61 | |
62 | private function &query($fields, $from, $joins, $where, $groupby, $order, $limit) |
63 | { |
64 | if (trim($order)) { |
65 | $order = "ORDER BY $order"; |
66 | } |
67 | if (trim($where)) { |
68 | $where = "WHERE $where"; |
69 | } |
70 | if (trim($groupby)) { |
71 | $groupby = "GROUP BY $groupby"; |
72 | } |
73 | $query = "SELECT SQL_CALC_FOUND_ROWS |
74 | $fields |
75 | FROM $from |
76 | $joins |
77 | $where |
78 | $groupby |
79 | $order |
80 | $limit"; |
81 | // echo $query; |
82 | // print_r($this); |
83 | $it = XDB::iterator($query); |
84 | $count = XDB::query('SELECT FOUND_ROWS()'); |
85 | $this->count = intval($count->fetchOneCell()); |
86 | return $it; |
87 | } |
88 | |
35fa92e8 |
89 | public function args() |
90 | { |
91 | $get = $_GET; |
92 | unset($get['n']); |
93 | return $get; |
94 | } |
95 | |
96 | protected function encodeArgs(array $args, $encode = false) |
97 | { |
98 | $qs = '?'; |
99 | $sep = $encode ? '&' : '&'; |
100 | foreach ($args as $k=>$v) { |
101 | if (!$encode) { |
102 | $k = urlencode($k); |
103 | $v = urlencode($v); |
104 | } |
105 | $qs .= "$k=$v$sep"; |
106 | } |
107 | return $encode ? urlencode($qs) : $qs; |
108 | } |
109 | |
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110 | public function &get($fields, $joins, $where, $groupby, $order, $limitcount = null, $limitfrom = null) |
111 | { |
112 | if (!is_null($limitcount)) { |
113 | if (!is_null($limitfrom)) { |
114 | $limitcount = "$limitfrom,$limitcount"; |
115 | } |
116 | $limitcount = "LIMIT $limitcount"; |
117 | } |
118 | $joins = $this->joins . ' ' . $joins; |
119 | $where = $where; |
120 | if (trim($this->where)) { |
121 | if (trim($where)) { |
122 | $where .= ' AND '; |
123 | } |
124 | $where .= $this->where; |
125 | } |
126 | if (!$groupby) { |
127 | $groupby = $this->groupby; |
128 | } |
129 | return $this->query($fields, $this->from, $joins, $where, $groupby, $order, $limitcount); |
130 | } |
131 | |
132 | public function count() |
133 | { |
134 | return $this->count; |
135 | } |
136 | |
137 | private function &buildView($view, $data) |
138 | { |
139 | $view = strtolower($view); |
140 | if (!$view || !class_exists($view . 'View') || !isset($this->mods[$view])) { |
ff3eb9b7 |
141 | reset($this->mods); |
142 | $view = $this->default ? $this->default : key($this->mods); |
8c4a0c30 |
143 | } |
144 | $this->mod = $view; |
145 | $class = $view . 'View'; |
146 | if (!class_exists($class)) { |
147 | $view = null; |
148 | } else { |
149 | $view = new $class($this, $data, $this->modParams[$this->mod]); |
150 | if (!$view instanceof PlView) { |
151 | $view = null; |
152 | } |
153 | } |
154 | return $view; |
155 | } |
156 | |
157 | public function apply($baseurl, PlatalPage &$page, $view = null, $data = null) |
158 | { |
159 | $view =& $this->buildView($view, $data); |
160 | if (is_null($view)) { |
161 | return false; |
162 | } |
35fa92e8 |
163 | $args = $view->args(); |
1490093c |
164 | $page->changeTpl('core/plset.tpl'); |
8c4a0c30 |
165 | $page->assign('plset_base', $baseurl); |
166 | $page->assign('plset_mods', $this->mods); |
167 | $page->assign('plset_mod', $this->mod); |
35fa92e8 |
168 | $page->assign('plset_search', $this->encodeArgs($args)); |
169 | $page->assign('plset_search_enc', $this->encodeArgs($args, true)); |
8c4a0c30 |
170 | foreach ($this->modParams[$this->mod] as $param=>$value) { |
171 | $page->assign($this->mod . '_' . $param, $value); |
172 | } |
173 | $page->assign('plset_content', $view->apply($page)); |
174 | $page->assign('plset_count', $this->count); |
175 | return true; |
176 | } |
177 | } |
178 | |
179 | interface PlView |
180 | { |
181 | public function __construct(PlSet &$set, $data, array $params); |
182 | public function apply(PlatalPage &$page); |
35fa92e8 |
183 | public function args(); |
8c4a0c30 |
184 | } |
185 | |
186 | abstract class MultipageView implements PlView |
187 | { |
188 | protected $set; |
189 | |
190 | public $pages = 1; |
191 | public $page = 1; |
192 | public $offset = 0; |
193 | |
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194 | protected $entriesPerPage = 20; |
195 | protected $params = array(); |
196 | |
35fa92e8 |
197 | protected $sortkeys = array(); |
198 | protected $defaultkey = null; |
199 | |
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200 | public function __construct(PlSet &$set, $data, array $params) |
201 | { |
202 | $this->set =& $set; |
203 | $this->page = Env::i('page', 1); |
204 | $this->offset = $this->entriesPerPage * ($this->page - 1); |
205 | $this->params = $params; |
206 | } |
207 | |
208 | public function joins() |
209 | { |
210 | return null; |
211 | } |
212 | |
213 | public function where() |
214 | { |
215 | return null; |
216 | } |
217 | |
218 | public function groupBy() |
219 | { |
220 | return null; |
221 | } |
222 | |
35fa92e8 |
223 | protected function addSortKey($name, array $keys, $desc, $default = false) |
224 | { |
225 | $this->sortkeys[$name] = array('keys' => $keys, 'desc' => $desc); |
226 | if (!$this->defaultkey || $default) { |
227 | $this->defaultkey = $name; |
228 | } |
229 | } |
230 | |
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231 | public function order() |
232 | { |
35fa92e8 |
233 | $order = Env::v('order', $this->defaultkey); |
234 | $invert = ($order{0} == '-'); |
235 | if ($invert) { |
236 | $order = substr($order, 1); |
237 | } |
238 | $list = array(); |
239 | foreach ($this->sortkeys[$order]['keys'] as $item) { |
240 | $desc = ($item{0} == '-'); |
241 | if ($desc) { |
242 | $item = substr($item, 1); |
8c4a0c30 |
243 | } |
35fa92e8 |
244 | if ($desc xor $invert) { |
245 | $item .= ' DESC'; |
246 | } |
247 | $list[] = $item; |
8c4a0c30 |
248 | } |
35fa92e8 |
249 | return implode(', ', $list); |
8c4a0c30 |
250 | } |
251 | |
252 | abstract public function templateName(); |
253 | |
254 | public function apply(PlatalPage &$page) |
255 | { |
35fa92e8 |
256 | $page->assign('order', Env::v('order', $this->defaultkey)); |
257 | $page->assign('orders', $this->sortkeys); |
8c4a0c30 |
258 | $page->assign_by_ref('plview', $this); |
259 | $page->assign_by_ref('set', |
260 | $this->set->get($this->fields(), |
261 | $this->joins(), |
262 | $this->where(), |
263 | $this->groupBy(), |
264 | $this->order(), |
265 | $this->entriesPerPage, |
266 | $this->offset)); |
267 | $count = $this->set->count(); |
268 | $this->pages = intval(ceil($count / $this->entriesPerPage)); |
8c4a0c30 |
269 | return 'include/plview.multipage.tpl'; |
270 | } |
35fa92e8 |
271 | |
272 | public function args() |
273 | { |
274 | $list = $this->set->args(); |
275 | unset($list['page']); |
276 | unset($list['order']); |
277 | return $list; |
278 | } |
8c4a0c30 |
279 | } |
280 | |
281 | // vim:set et sw=4 sts=4 sws=4 foldmethod=marker enc=utf-8: |
282 | ?> |