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<?php
/**
* 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
*/
namespace MediaWiki\SpecialPage;
use MediaWiki\Skin\Skin;
use MediaWiki\Title\Title;
use stdClass;
use Wikimedia\Rdbms\IDatabase;
use Wikimedia\Rdbms\IResultWrapper;
/**
* Base class for a "wanted" query page like WantedPages, WantedTemplates, etc
*
* @stable to extend
* @ingroup SpecialPage
*/
abstract class WantedQueryPage extends QueryPage {
public function isExpensive() {
return true;
}
public function isSyndicated() {
return false;
}
/**
* Cache page existence for performance
* @stable to override
* @param IDatabase $db
* @param IResultWrapper $res
*/
protected function preprocessResults( $db, $res ) {
$this->executeLBFromResultWrapper( $res );
}
/**
* Should formatResult() always check page existence, even if
* the results are fresh? This is a (hopefully temporary)
* kluge for Special:WantedFiles, which may contain false
* positives for files that exist e.g. in a shared repo (bug
* 6220).
* @stable to override
* @return bool
*/
protected function forceExistenceCheck() {
return false;
}
/**
* Format an individual result
*
* @stable to override
*
* @param Skin $skin Skin to use for UI elements
* @param stdClass $result Result row
* @return string
*/
public function formatResult( $skin, $result ) {
$linkRenderer = $this->getLinkRenderer();
$title = Title::makeTitleSafe( $result->namespace, $result->title );
if ( $title instanceof Title ) {
if ( $this->isCached() || $this->forceExistenceCheck() ) {
$pageLink = $this->existenceCheck( $title )
? '<del>' . $linkRenderer->makeLink( $title ) . '</del>'
: $linkRenderer->makeLink( $title );
} else {
$pageLink = $linkRenderer->makeBrokenLink( $title );
}
return $this->getLanguage()->specialList( $pageLink, $this->makeWlhLink( $title, $result ) );
} else {
return $this->msg( 'wantedpages-badtitle', $result->title )->escaped();
}
}
/**
* Does the Title currently exists
*
* This method allows a subclass to override this check
* (For example, wantedfiles, would want to check if the file exists
* not just that a page in the file namespace exists).
*
* This will only control if the link is crossed out. Whether or not the link
* is blue vs red is controlled by if the title exists.
*
* @note This will only be run if the page is cached (ie $wgMiserMode = true)
* unless forceExistenceCheck() is true.
* @since 1.24
* @stable to override
*
* @param Title $title
* @return bool
*/
protected function existenceCheck( Title $title ) {
return $title->isKnown();
}
/**
* Make a "what links here" link for a given title
*
* @param Title $title Title to make the link for
* @param stdClass $result Result row
* @return string
*/
protected function makeWlhLink( $title, $result ) {
$wlh = SpecialPage::getTitleFor( 'Whatlinkshere', $title->getPrefixedText() );
$label = $this->msg( 'nlinks' )->numParams( $result->value )->text();
return $this->getLinkRenderer()->makeLink( $wlh, $label );
}
/**
* Order by title for pages with the same number of links to them
*
* @stable to override
* @return array
* @since 1.29
*/
protected function getOrderFields() {
return [ 'value DESC', 'namespace', 'title' ];
}
/**
* Do not order descending for all order fields. We will use DESC only on one field, see
* getOrderFields above. This overwrites sortDescending from QueryPage::getOrderFields().
* Do NOT change this to true unless you remove the phrase DESC in getOrderFields above.
* If you do a database error will be thrown due to double adding DESC to query!
*
* @stable to override
* @return bool
* @since 1.29
*/
protected function sortDescending() {
return false;
}
/**
* Also use the order fields returned by getOrderFields when fetching from the cache.
* @stable to override
* @return array
* @since 1.29
*/
protected function getCacheOrderFields() {
return $this->getOrderFields();
}
}
/** @deprecated class alias since 1.41 */
class_alias( WantedQueryPage::class, 'WantedQueryPage' );