1 files changed, 115 insertions, 0 deletions
diff --git a/www/wiki/includes/specials/pagers/CategoryPager.php b/www/wiki/includes/specials/pagers/CategoryPager.php
new file mode 100644
index 00000000..7db90c17
--- /dev/null
+++ b/www/wiki/includes/specials/pagers/CategoryPager.php
@@ -0,0 +1,115 @@
+<?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
+ * @ingroup Pager
+ */
+use MediaWiki\Linker\LinkRenderer;
+
+/**
+ * @ingroup Pager
+ */
+class CategoryPager extends AlphabeticPager {
+
+	/**
+	 * @var LinkRenderer
+	 */
+	protected $linkRenderer;
+
+	/**
+	 * @param IContextSource $context
+	 * @param string $from
+	 * @param LinkRenderer $linkRenderer
+	 */
+	public function __construct( IContextSource $context, $from, LinkRenderer $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 [
+			'tables' => [ 'category' ],
+			'fields' => [ 'cat_title', 'cat_pages' ],
+			'options' => [ 'USE INDEX' => 'cat_title' ],
+		];
+	}
+
+	function getIndexField() {
+		return 'cat_title';
+	}
+
+	function getDefaultQuery() {
+		parent::getDefaultQuery();
+		unset( $this->mDefaultQuery['from'] );
+
+		return $this->mDefaultQuery;
+	}
+
+	/* 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( new TitleValue( 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->makeLink( $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 ) {
+		$formDescriptor = [
+			'from' => [
+				'type' => 'title',
+				'namespace' => NS_CATEGORY,
+				'relative' => true,
+				'label-message' => 'categoriesfrom',
+				'name' => 'from',
+				'id' => 'from',
+				'size' => 20,
+				'default' => $from,
+			],
+		];
+
+		$htmlForm = HTMLForm::factory( 'ooui', $formDescriptor, $this->getContext() )
+			->setSubmitTextMsg( 'categories-submit' )
+			->setWrapperLegendMsg( 'categories' )
+			->setMethod( 'get' );
+		return $htmlForm->prepareForm()->getHTML( false );
+	}
+
+}