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<?php
/**
* Implements Special:Wantedcategories
*
* Copyright © 2005 Ævar Arnfjörð Bjarmason
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
* http://www.gnu.org/copyleft/gpl.html
*
* @file
* @ingroup SpecialPage
*/
/**
* A querypage to list the most wanted categories - implements Special:Wantedcategories
*
* @ingroup SpecialPage
*/
class WantedCategoriesPage extends WantedQueryPage {
private $currentCategoryCounts;
function __construct( $name = 'Wantedcategories' ) {
parent::__construct( $name );
}
function getQueryInfo() {
return array(
'tables' => array( 'categorylinks', 'page' ),
'fields' => array(
'namespace' => NS_CATEGORY,
'title' => 'cl_to',
'value' => 'COUNT(*)'
),
'conds' => array( 'page_title IS NULL' ),
'options' => array( 'GROUP BY' => 'cl_to' ),
'join_conds' => array( 'page' => array( 'LEFT JOIN',
array( 'page_title = cl_to',
'page_namespace' => NS_CATEGORY ) ) )
);
}
function preprocessResults( $db, $res ) {
parent::preprocessResults( $db, $res );
$this->currentCategoryCounts = array();
if ( !$res->numRows() || !$this->isCached() ) {
return;
}
// Fetch (hopefully) up-to-date numbers of pages in each category.
// This should be fast enough as we limit the list to a reasonable length.
$allCategories = array();
foreach ( $res as $row ) {
$allCategories[] = $row->title;
}
$categoryRes = $db->select(
'category',
array( 'cat_title', 'cat_pages' ),
array( 'cat_title' => $allCategories ),
__METHOD__
);
foreach ( $categoryRes as $row ) {
$this->currentCategoryCounts[$row->cat_title] = intval( $row->cat_pages );
}
// Back to start for display
$res->seek( 0 );
}
/**
* @param Skin $skin
* @param object $result Result row
* @return string
*/
function formatResult( $skin, $result ) {
global $wgContLang;
$nt = Title::makeTitle( $result->namespace, $result->title );
$text = htmlspecialchars( $wgContLang->convert( $nt->getText() ) );
if ( !$this->isCached() ) {
// We can assume the freshest data
$plink = Linker::link(
$nt,
$text,
array(),
array(),
array( 'broken' )
);
$nlinks = $this->msg( 'nmembers' )->numParams( $result->value )->escaped();
} else {
$plink = Linker::link( $nt, $text );
$currentValue = isset( $this->currentCategoryCounts[$result->title] )
? $this->currentCategoryCounts[$result->title]
: 0;
$cachedValue = intval( $result->value ); // T76910
// If the category has been created or emptied since the list was refreshed, strike it
if ( $nt->isKnown() || $currentValue === 0 ) {
$plink = "<del>$plink</del>";
}
// Show the current number of category entries if it changed
if ( $currentValue !== $cachedValue ) {
$nlinks = $this->msg( 'nmemberschanged' )
->numParams( $cachedValue, $currentValue )->escaped();
} else {
$nlinks = $this->msg( 'nmembers' )->numParams( $cachedValue )->escaped();
}
}
return $this->getLanguage()->specialList( $plink, $nlinks );
}
protected function getGroupName() {
return 'maintenance';
}
}
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