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1 | <?php |
2 | /** |
3 | * Class definition for a wanted query page. |
4 | * |
5 | * This program is free software; you can redistribute it and/or modify |
6 | * it under the terms of the GNU General Public License as published by |
7 | * the Free Software Foundation; either version 2 of the License, or |
8 | * (at your option) any later version. |
9 | * |
10 | * This program is distributed in the hope that it will be useful, |
11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
13 | * GNU General Public License for more details. |
14 | * |
15 | * You should have received a copy of the GNU General Public License along |
16 | * with this program; if not, write to the Free Software Foundation, Inc., |
17 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. |
18 | * http://www.gnu.org/copyleft/gpl.html |
19 | * |
20 | * @file |
21 | * @ingroup SpecialPage |
22 | */ |
23 | |
24 | namespace MediaWiki\SpecialPage; |
25 | |
26 | use MediaWiki\Title\Title; |
27 | use Skin; |
28 | use stdClass; |
29 | use Wikimedia\Rdbms\IDatabase; |
30 | use Wikimedia\Rdbms\IResultWrapper; |
31 | |
32 | /** |
33 | * Class definition for a wanted query page like |
34 | * WantedPages, WantedTemplates, etc |
35 | * @stable to extend |
36 | * @ingroup SpecialPage |
37 | */ |
38 | abstract class WantedQueryPage extends QueryPage { |
39 | public function isExpensive() { |
40 | return true; |
41 | } |
42 | |
43 | public function isSyndicated() { |
44 | return false; |
45 | } |
46 | |
47 | /** |
48 | * Cache page existence for performance |
49 | * @stable to override |
50 | * @param IDatabase $db |
51 | * @param IResultWrapper $res |
52 | */ |
53 | protected function preprocessResults( $db, $res ) { |
54 | $this->executeLBFromResultWrapper( $res ); |
55 | } |
56 | |
57 | /** |
58 | * Should formatResult() always check page existence, even if |
59 | * the results are fresh? This is a (hopefully temporary) |
60 | * kluge for Special:WantedFiles, which may contain false |
61 | * positives for files that exist e.g. in a shared repo (bug |
62 | * 6220). |
63 | * @stable to override |
64 | * @return bool |
65 | */ |
66 | protected function forceExistenceCheck() { |
67 | return false; |
68 | } |
69 | |
70 | /** |
71 | * Format an individual result |
72 | * |
73 | * @stable to override |
74 | * |
75 | * @param Skin $skin Skin to use for UI elements |
76 | * @param stdClass $result Result row |
77 | * @return string |
78 | */ |
79 | public function formatResult( $skin, $result ) { |
80 | $linkRenderer = $this->getLinkRenderer(); |
81 | $title = Title::makeTitleSafe( $result->namespace, $result->title ); |
82 | if ( $title instanceof Title ) { |
83 | if ( $this->isCached() || $this->forceExistenceCheck() ) { |
84 | $pageLink = $this->existenceCheck( $title ) |
85 | ? '<del>' . $linkRenderer->makeLink( $title ) . '</del>' |
86 | : $linkRenderer->makeLink( $title ); |
87 | } else { |
88 | $pageLink = $linkRenderer->makeBrokenLink( $title ); |
89 | } |
90 | return $this->getLanguage()->specialList( $pageLink, $this->makeWlhLink( $title, $result ) ); |
91 | } else { |
92 | return $this->msg( 'wantedpages-badtitle', $result->title )->escaped(); |
93 | } |
94 | } |
95 | |
96 | /** |
97 | * Does the Title currently exists |
98 | * |
99 | * This method allows a subclass to override this check |
100 | * (For example, wantedfiles, would want to check if the file exists |
101 | * not just that a page in the file namespace exists). |
102 | * |
103 | * This will only control if the link is crossed out. Whether or not the link |
104 | * is blue vs red is controlled by if the title exists. |
105 | * |
106 | * @note This will only be run if the page is cached (ie $wgMiserMode = true) |
107 | * unless forceExistenceCheck() is true. |
108 | * @since 1.24 |
109 | * @stable to override |
110 | * |
111 | * @param Title $title |
112 | * @return bool |
113 | */ |
114 | protected function existenceCheck( Title $title ) { |
115 | return $title->isKnown(); |
116 | } |
117 | |
118 | /** |
119 | * Make a "what links here" link for a given title |
120 | * |
121 | * @param Title $title Title to make the link for |
122 | * @param stdClass $result Result row |
123 | * @return string |
124 | */ |
125 | protected function makeWlhLink( $title, $result ) { |
126 | $wlh = SpecialPage::getTitleFor( 'Whatlinkshere', $title->getPrefixedText() ); |
127 | $label = $this->msg( 'nlinks' )->numParams( $result->value )->text(); |
128 | return $this->getLinkRenderer()->makeLink( $wlh, $label ); |
129 | } |
130 | |
131 | /** |
132 | * Order by title for pages with the same number of links to them |
133 | * |
134 | * @stable to override |
135 | * @return array |
136 | * @since 1.29 |
137 | */ |
138 | protected function getOrderFields() { |
139 | return [ 'value DESC', 'namespace', 'title' ]; |
140 | } |
141 | |
142 | /** |
143 | * Do not order descending for all order fields. We will use DESC only on one field, see |
144 | * getOrderFields above. This overwrites sortDescending from QueryPage::getOrderFields(). |
145 | * Do NOT change this to true unless you remove the phrase DESC in getOrderFields above. |
146 | * If you do a database error will be thrown due to double adding DESC to query! |
147 | * |
148 | * @stable to override |
149 | * @return bool |
150 | * @since 1.29 |
151 | */ |
152 | protected function sortDescending() { |
153 | return false; |
154 | } |
155 | |
156 | /** |
157 | * Also use the order fields returned by getOrderFields when fetching from the cache. |
158 | * @stable to override |
159 | * @return array |
160 | * @since 1.29 |
161 | */ |
162 | protected function getCacheOrderFields() { |
163 | return $this->getOrderFields(); |
164 | } |
165 | |
166 | } |
167 | |
168 | /** @deprecated class alias since 1.41 */ |
169 | class_alias( WantedQueryPage::class, 'WantedQueryPage' ); |