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<?php
/**
* Implements Special:Categories
*
* 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
*/
/**
* @ingroup SpecialPage
*/
class SpecialCategories extends SpecialPage {
function __construct() {
parent::__construct( 'Categories' );
}
function execute( $par ) {
$this->setHeaders();
$this->outputHeader();
$this->getOutput()->allowClickjacking();
$from = $this->getRequest()->getText( 'from', $par );
$cap = new CategoryPager( $this->getContext(), $from );
$cap->doQuery();
$this->getOutput()->addHTML(
Html::openElement( 'div', array( 'class' => 'mw-spcontent' ) ) .
$this->msg( 'categoriespagetext', $cap->getNumRows() )->parseAsBlock() .
$cap->getStartForm( $from ) .
$cap->getNavigationBar() .
'<ul>' . $cap->getBody() . '</ul>' .
$cap->getNavigationBar() .
Html::closeElement( 'div' )
);
}
}
/**
* TODO: Allow sorting by count. We need to have a unique index to do this
* properly.
*
* @ingroup SpecialPage Pager
*/
class CategoryPager extends AlphabeticPager {
private $conds = array( 'cat_pages > 0' );
function __construct( IContextSource $context, $from ) {
parent::__construct( $context );
$from = str_replace( ' ', '_', $from );
if( $from !== '' ) {
$from = Title::capitalize( $from, NS_CATEGORY );
$dbr = wfGetDB( DB_SLAVE );
$this->conds[] = 'cat_title >= ' . $dbr->addQuotes( $from );
$this->setOffset( '' );
}
}
function getQueryInfo() {
return array(
'tables' => array( 'category' ),
'fields' => array( 'cat_title','cat_pages' ),
'conds' => $this->conds,
'options' => array( 'USE INDEX' => 'cat_title' ),
);
}
function getIndexField() {
# return array( 'abc' => 'cat_title', 'count' => 'cat_pages' );
return 'cat_title';
}
function getDefaultQuery() {
parent::getDefaultQuery();
unset( $this->mDefaultQuery['from'] );
return $this->mDefaultQuery;
}
# protected function getOrderTypeMessages() {
# return array( 'abc' => 'special-categories-sort-abc',
# 'count' => 'special-categories-sort-count' );
# }
protected function getDefaultDirections() {
# return array( 'abc' => false, 'count' => true );
return false;
}
/* Override getBody to apply LinksBatch on resultset before actually outputting anything. */
public function getBody() {
$batch = new LinkBatch;
$this->mResult->rewind();
foreach ( $this->mResult as $row ) {
$batch->addObj( Title::makeTitleSafe( NS_CATEGORY, $row->cat_title ) );
}
$batch->execute();
$this->mResult->rewind();
return parent::getBody();
}
function formatRow($result) {
$title = Title::makeTitle( NS_CATEGORY, $result->cat_title );
$titleText = Linker::link( $title, htmlspecialchars( $title->getText() ) );
$count = $this->msg( 'nmembers' )->numParams( $result->cat_pages )->escaped();
return Xml::tags( 'li', null, $this->getLanguage()->specialList( $titleText, $count ) ) . "\n";
}
public function getStartForm( $from ) {
global $wgScript;
return
Xml::tags( 'form', array( 'method' => 'get', 'action' => $wgScript ),
Html::hidden( 'title', $this->getTitle()->getPrefixedText() ) .
Xml::fieldset( $this->msg( 'categories' )->text(),
Xml::inputLabel( $this->msg( 'categoriesfrom' )->text(),
'from', 'from', 20, $from ) .
' ' .
Xml::submitButton( $this->msg( 'allpagessubmit' )->text() ) ) );
}
}
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