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[autoinstallsdev/mediawiki.git] / includes / specials / SpecialDisambiguations.php
1 <?php
2 /**
3  * @file
4  * @ingroup SpecialPage
5  */
6
7 /**
8  * @ingroup SpecialPage
9  */
10 class DisambiguationsPage extends PageQueryPage {
11
12         function getName() {
13                 return 'Disambiguations';
14         }
15
16         function isExpensive( ) { return true; }
17         function isSyndicated() { return false; }
18
19
20         function getPageHeader( ) {
21                 return wfMsgExt( 'disambiguations-text', array( 'parse' ) );
22         }
23
24         function getSQL() {
25                 $dbr = wfGetDB( DB_SLAVE );
26
27                 $dMsgText = wfMsgForContent('disambiguationspage');
28
29                 $linkBatch = new LinkBatch;
30
31                 # If the text can be treated as a title, use it verbatim.
32                 # Otherwise, pull the titles from the links table
33                 $dp = Title::newFromText($dMsgText);
34                 if( $dp ) {
35                         if($dp->getNamespace() != NS_TEMPLATE) {
36                                 # FIXME we assume the disambiguation message is a template but
37                                 # the page can potentially be from another namespace :/
38                                 wfDebug("Mediawiki:disambiguationspage message does not refer to a template!\n");
39                         }
40                         $linkBatch->addObj( $dp );
41                 } else {
42                                 # Get all the templates linked from the Mediawiki:Disambiguationspage
43                                 $disPageObj = Title::makeTitleSafe( NS_MEDIAWIKI, 'disambiguationspage' );
44                                 $res = $dbr->select(
45                                         array('pagelinks', 'page'),
46                                         'pl_title',
47                                         array('page_id = pl_from', 'pl_namespace' => NS_TEMPLATE,
48                                                 'page_namespace' => $disPageObj->getNamespace(), 'page_title' => $disPageObj->getDBkey()),
49                                         __METHOD__ );
50
51                                 while ( $row = $dbr->fetchObject( $res ) ) {
52                                         $linkBatch->addObj( Title::makeTitle( NS_TEMPLATE, $row->pl_title ));
53                                 }
54
55                                 $dbr->freeResult( $res );
56                 }
57
58                 $set = $linkBatch->constructSet( 'lb.tl', $dbr );
59                 if( $set === false ) {
60                         # We must always return a valid sql query, but this way DB will always quicly return an empty result
61                         $set = 'FALSE';
62                         wfDebug("Mediawiki:disambiguationspage message does not link to any templates!\n");
63                 }
64
65                 list( $page, $pagelinks, $templatelinks) = $dbr->tableNamesN( 'page', 'pagelinks', 'templatelinks' );
66
67                 $sql = "SELECT 'Disambiguations' AS \"type\", pb.page_namespace AS namespace,"
68                         ." pb.page_title AS title, la.pl_from AS value"
69                         ." FROM {$templatelinks} AS lb, {$page} AS pb, {$pagelinks} AS la, {$page} AS pa"
70                         ." WHERE $set"  # disambiguation template(s)
71                         .' AND pa.page_id = la.pl_from'
72                         .' AND pa.page_namespace = ' . NS_MAIN  # Limit to just articles in the main namespace
73                         .' AND pb.page_id = lb.tl_from'
74                         .' AND pb.page_namespace = la.pl_namespace'
75                         .' AND pb.page_title = la.pl_title'
76                         .' ORDER BY lb.tl_namespace, lb.tl_title';
77
78                 return $sql;
79         }
80
81         function getOrder() {
82                 return '';
83         }
84
85         function formatResult( $skin, $result ) {
86                 global $wgContLang;
87                 $title = Title::newFromID( $result->value );
88                 $dp = Title::makeTitle( $result->namespace, $result->title );
89
90                 $from = $skin->link( $title );
91                 $edit = $skin->link( $title, "(".wfMsgHtml("qbedit").")", array(), array( 'redirect' => 'no', 'action' => 'edit' ) );
92                 $arr  = $wgContLang->getArrow();
93                 $to   = $skin->link( $dp );
94
95                 return "$from $edit $arr $to";
96         }
97 }
98
99 /**
100  * Constructor
101  */
102 function wfSpecialDisambiguations() {
103         list( $limit, $offset ) = wfCheckLimits();
104
105         $sd = new DisambiguationsPage();
106
107         return $sd->doQuery( $offset, $limit );
108 }