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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 $it; |
87 | } |
88 | |
89 | public function &get($fields, $joins, $where, $groupby, $order, $limitcount = null, $limitfrom = null) |
90 | { |
91 | if (!is_null($limitcount)) { |
92 | if (!is_null($limitfrom)) { |
93 | $limitcount = "$limitfrom,$limitcount"; |
94 | } |
95 | $limitcount = "LIMIT $limitcount"; |
96 | } |
97 | $joins = $this->joins . ' ' . $joins; |
98 | $where = $where; |
99 | if (trim($this->where)) { |
100 | if (trim($where)) { |
101 | $where .= ' AND '; |
102 | } |
103 | $where .= $this->where; |
104 | } |
105 | if (!$groupby) { |
106 | $groupby = $this->groupby; |
107 | } |
108 | return $this->query($fields, $this->from, $joins, $where, $groupby, $order, $limitcount); |
109 | } |
110 | |
111 | public function count() |
112 | { |
113 | return $this->count; |
114 | } |
115 | |
116 | private function &buildView($view, $data) |
117 | { |
118 | $view = strtolower($view); |
119 | if (!$view || !class_exists($view . 'View') || !isset($this->mods[$view])) { |
120 | $view = $this->default ? $this->default : $this->mods[0]; |
121 | } |
122 | $this->mod = $view; |
123 | $class = $view . 'View'; |
124 | if (!class_exists($class)) { |
125 | $view = null; |
126 | } else { |
127 | $view = new $class($this, $data, $this->modParams[$this->mod]); |
128 | if (!$view instanceof PlView) { |
129 | $view = null; |
130 | } |
131 | } |
132 | return $view; |
133 | } |
134 | |
135 | public function apply($baseurl, PlatalPage &$page, $view = null, $data = null) |
136 | { |
137 | $view =& $this->buildView($view, $data); |
138 | if (is_null($view)) { |
139 | return false; |
140 | } |
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141 | if (empty($GLOBALS['IS_XNET_SITE'])) { |
142 | $page->changeTpl('core/plset.tpl'); |
143 | } else { |
144 | new_group_open_page('core/plset.tpl'); |
145 | } |
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146 | $page->assign('plset_base', $baseurl); |
147 | $page->assign('plset_mods', $this->mods); |
148 | $page->assign('plset_mod', $this->mod); |
149 | foreach ($this->modParams[$this->mod] as $param=>$value) { |
150 | $page->assign($this->mod . '_' . $param, $value); |
151 | } |
152 | $page->assign('plset_content', $view->apply($page)); |
153 | $page->assign('plset_count', $this->count); |
154 | return true; |
155 | } |
156 | } |
157 | |
158 | interface PlView |
159 | { |
160 | public function __construct(PlSet &$set, $data, array $params); |
161 | public function apply(PlatalPage &$page); |
162 | } |
163 | |
164 | abstract class MultipageView implements PlView |
165 | { |
166 | protected $set; |
167 | |
168 | public $pages = 1; |
169 | public $page = 1; |
170 | public $offset = 0; |
171 | |
172 | protected $order = array(); |
173 | protected $entriesPerPage = 20; |
174 | protected $params = array(); |
175 | |
176 | public function __construct(PlSet &$set, $data, array $params) |
177 | { |
178 | $this->set =& $set; |
179 | $this->page = Env::i('page', 1); |
180 | $this->offset = $this->entriesPerPage * ($this->page - 1); |
181 | $this->params = $params; |
182 | } |
183 | |
184 | public function joins() |
185 | { |
186 | return null; |
187 | } |
188 | |
189 | public function where() |
190 | { |
191 | return null; |
192 | } |
193 | |
194 | public function groupBy() |
195 | { |
196 | return null; |
197 | } |
198 | |
199 | public function order() |
200 | { |
201 | foreach ($this->order as &$item) { |
202 | if ($item{0} == '-') { |
203 | $item = substr($item, 1) . ' DESC'; |
204 | } |
205 | } |
206 | return implode(', ', $this->order); |
207 | } |
208 | |
209 | abstract public function templateName(); |
210 | |
211 | public function apply(PlatalPage &$page) |
212 | { |
213 | $page->assign_by_ref('plview', $this); |
214 | $page->assign_by_ref('set', |
215 | $this->set->get($this->fields(), |
216 | $this->joins(), |
217 | $this->where(), |
218 | $this->groupBy(), |
219 | $this->order(), |
220 | $this->entriesPerPage, |
221 | $this->offset)); |
222 | $count = $this->set->count(); |
223 | $this->pages = intval(ceil($count / $this->entriesPerPage)); |
224 | |
225 | return 'include/plview.multipage.tpl'; |
226 | } |
227 | } |
228 | |
229 | // vim:set et sw=4 sts=4 sws=4 foldmethod=marker enc=utf-8: |
230 | ?> |