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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 {
/**
* @var PageLinkRenderer
*/
protected $linkRenderer = null;
public function __construct() {
parent::__construct( 'Categories' );
// Since we don't control the constructor parameters, we can't inject services that way.
// Instead, we initialize services in the execute() method, and allow them to be overridden
// using the initServices() method.
}
/**
* Initialize or override the PageLinkRenderer SpecialCategories collaborates with.
* Useful mainly for testing.
*
* @todo the pager should also be injected, and de-coupled from the rendering logic.
*
* @param PageLinkRenderer $linkRenderer
*/
public function setPageLinkRenderer(
PageLinkRenderer $linkRenderer
) {
$this->linkRenderer = $linkRenderer;
}
/**
* Initialize any services we'll need (unless it has already been provided via a setter).
* This allows for dependency injection even though we don't control object creation.
*/
private function initServices() {
if ( !$this->linkRenderer ) {
$lang = $this->getContext()->getLanguage();
$titleFormatter = new MediaWikiTitleCodec( $lang, GenderCache::singleton() );
$this->linkRenderer = new MediaWikiPageLinkRenderer( $titleFormatter );
}
}
public function execute( $par ) {
$this->initServices();
$this->setHeaders();
$this->outputHeader();
$this->getOutput()->allowClickjacking();
$from = $this->getRequest()->getText( 'from', $par );
$cap = new CategoryPager( $this->getContext(), $from, $this->linkRenderer );
$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' )
);
}
protected function getGroupName() {
return 'pages';
}
}
/**
* TODO: Allow sorting by count. We need to have a unique index to do this
* properly.
*
* @ingroup SpecialPage Pager
*/
class CategoryPager extends AlphabeticPager {
/**
* @var PageLinkRenderer
*/
protected $linkRenderer;
/**
* @param IContextSource $context
* @param string $from
* @param PageLinkRenderer $linkRenderer
*/
public function __construct( IContextSource $context, $from, PageLinkRenderer $linkRenderer
) {
parent::__construct( $context );
$from = str_replace( ' ', '_', $from );
if ( $from !== '' ) {
$from = Title::capitalize( $from, NS_CATEGORY );
$this->setOffset( $from );
$this->setIncludeOffset( true );
}
$this->linkRenderer = $linkRenderer;
}
function getQueryInfo() {
return array(
'tables' => array( 'category' ),
'fields' => array( 'cat_title', 'cat_pages' ),
'conds' => array( 'cat_pages > 0' ),
'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 = new TitleValue( NS_CATEGORY, $result->cat_title );
$text = $title->getText();
$link = $this->linkRenderer->renderHtmlLink( $title, $text );
$count = $this->msg( 'nmembers' )->numParams( $result->cat_pages )->escaped();
return Html::rawElement( 'li', null, $this->getLanguage()->specialList( $link, $count ) ) . "\n";
}
public function getStartForm( $from ) {
return Xml::tags(
'form',
array( 'method' => 'get', 'action' => wfScript() ),
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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