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path: root/includes/specials/SpecialWithoutinterwiki.php
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<?php
/**
 * Implements Special:Withoutinterwiki
 *
 * 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
 * @author Rob Church <robchur@gmail.com>
 */

/**
 * Special page lists pages without language links
 *
 * @ingroup SpecialPage
 */
class WithoutInterwikiPage extends PageQueryPage {
	private $prefix = '';

	function __construct( $name = 'Withoutinterwiki' ) {
		parent::__construct( $name );
	}

	function execute( $par ) {
		$this->prefix = Title::capitalize(
			$this->getRequest()->getVal( 'prefix', $par ), NS_MAIN );
		parent::execute( $par );
	}

	function getPageHeader() {
		# Do not show useless input form if special page is cached
		if ( $this->isCached() ) {
			return '';
		}

		$prefix = $this->prefix;
		$t = $this->getPageTitle();

		return Html::openElement( 'form', array( 'method' => 'get', 'action' => wfScript() ) ) . "\n" .
			Html::openElement( 'fieldset' ) . "\n" .
			Html::element( 'legend', null, $this->msg( 'withoutinterwiki-legend' )->text() ) . "\n" .
			Html::hidden( 'title', $t->getPrefixedText() ) . "\n" .
			Xml::inputLabel(
				$this->msg( 'allpagesprefix' )->text(),
				'prefix',
				'wiprefix',
				20,
				$prefix
			) . "\n" .
			Xml::submitButton( $this->msg( 'withoutinterwiki-submit' )->text() ) . "\n" .
			Html::closeElement( 'fieldset' ) . "\n" .
			Html::closeElement( 'form' );
	}

	function sortDescending() {
		return false;
	}

	function getOrderFields() {
		return array( 'page_namespace', 'page_title' );
	}

	function isExpensive() {
		return true;
	}

	function isSyndicated() {
		return false;
	}

	function getQueryInfo() {
		$query = array(
			'tables' => array( 'page', 'langlinks' ),
			'fields' => array(
				'namespace' => 'page_namespace',
				'title' => 'page_title',
				'value' => 'page_title'
			),
			'conds' => array(
				'll_title IS NULL',
				'page_namespace' => MWNamespace::getContentNamespaces(),
				'page_is_redirect' => 0
			),
			'join_conds' => array( 'langlinks' => array( 'LEFT JOIN', 'll_from = page_id' ) )
		);
		if ( $this->prefix ) {
			$dbr = wfGetDB( DB_SLAVE );
			$query['conds'][] = 'page_title ' . $dbr->buildLike( $this->prefix, $dbr->anyString() );
		}

		return $query;
	}

	protected function getGroupName() {
		return 'maintenance';
	}
}