mirror of
https://github.com/YunoHost-Apps/mediawiki_ynh.git
synced 2024-09-03 19:46:05 +02:00
480 lines
13 KiB
PHP
480 lines
13 KiB
PHP
<?php
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/**
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* Implements Special:Whatlinkshere
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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* http://www.gnu.org/copyleft/gpl.html
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*
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* @file
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* @todo Use some variant of Pager or something; the pagination here is lousy.
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*/
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/**
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* Implements Special:Whatlinkshere
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*
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* @ingroup SpecialPage
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*/
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class SpecialWhatLinksHere extends SpecialPage {
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/**
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* @var FormOptions
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*/
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protected $opts;
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protected $selfTitle;
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/**
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* @var Title
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*/
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protected $target;
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protected $limits = array( 20, 50, 100, 250, 500 );
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public function __construct() {
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parent::__construct( 'Whatlinkshere' );
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}
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function execute( $par ) {
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global $wgQueryPageDefaultLimit;
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$out = $this->getOutput();
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$this->setHeaders();
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$this->outputHeader();
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$opts = new FormOptions();
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$opts->add( 'target', '' );
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$opts->add( 'namespace', '', FormOptions::INTNULL );
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$opts->add( 'limit', $wgQueryPageDefaultLimit );
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$opts->add( 'from', 0 );
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$opts->add( 'back', 0 );
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$opts->add( 'hideredirs', false );
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$opts->add( 'hidetrans', false );
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$opts->add( 'hidelinks', false );
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$opts->add( 'hideimages', false );
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$opts->fetchValuesFromRequest( $this->getRequest() );
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$opts->validateIntBounds( 'limit', 0, 5000 );
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// Give precedence to subpage syntax
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if ( isset( $par ) ) {
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$opts->setValue( 'target', $par );
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}
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// Bind to member variable
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$this->opts = $opts;
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$this->target = Title::newFromURL( $opts->getValue( 'target' ) );
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if ( !$this->target ) {
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$out->addHTML( $this->whatlinkshereForm() );
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return;
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}
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$this->getSkin()->setRelevantTitle( $this->target );
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$this->selfTitle = $this->getTitle( $this->target->getPrefixedDBkey() );
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$out->setPageTitle( $this->msg( 'whatlinkshere-title', $this->target->getPrefixedText() ) );
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$out->addBacklinkSubtitle( $this->target );
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$this->showIndirectLinks( 0, $this->target, $opts->getValue( 'limit' ),
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$opts->getValue( 'from' ), $opts->getValue( 'back' ) );
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}
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/**
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* @param int $level Recursion level
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* @param Title $target Target title
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* @param int $limit Number of entries to display
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* @param int $from Display from this article ID (default: 0)
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* @param int $back Display from this article ID at backwards scrolling (default: 0)
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*/
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function showIndirectLinks( $level, $target, $limit, $from = 0, $back = 0 ) {
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global $wgMaxRedirectLinksRetrieved;
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$out = $this->getOutput();
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$dbr = wfGetDB( DB_SLAVE );
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$options = array();
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$hidelinks = $this->opts->getValue( 'hidelinks' );
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$hideredirs = $this->opts->getValue( 'hideredirs' );
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$hidetrans = $this->opts->getValue( 'hidetrans' );
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$hideimages = $target->getNamespace() != NS_FILE || $this->opts->getValue( 'hideimages' );
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$fetchlinks = ( !$hidelinks || !$hideredirs );
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// Make the query
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$plConds = array(
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'page_id=pl_from',
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'pl_namespace' => $target->getNamespace(),
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'pl_title' => $target->getDBkey(),
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);
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if ( $hideredirs ) {
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$plConds['rd_from'] = null;
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} elseif ( $hidelinks ) {
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$plConds[] = 'rd_from is NOT NULL';
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}
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$tlConds = array(
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'page_id=tl_from',
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'tl_namespace' => $target->getNamespace(),
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'tl_title' => $target->getDBkey(),
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);
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$ilConds = array(
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'page_id=il_from',
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'il_to' => $target->getDBkey(),
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);
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$namespace = $this->opts->getValue( 'namespace' );
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if ( is_int( $namespace ) ) {
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$plConds['page_namespace'] = $namespace;
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$tlConds['page_namespace'] = $namespace;
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$ilConds['page_namespace'] = $namespace;
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}
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if ( $from ) {
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$tlConds[] = "tl_from >= $from";
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$plConds[] = "pl_from >= $from";
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$ilConds[] = "il_from >= $from";
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}
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// Read an extra row as an at-end check
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$queryLimit = $limit + 1;
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// Enforce join order, sometimes namespace selector may
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// trigger filesorts which are far less efficient than scanning many entries
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$options[] = 'STRAIGHT_JOIN';
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$options['LIMIT'] = $queryLimit;
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$fields = array( 'page_id', 'page_namespace', 'page_title', 'rd_from' );
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$joinConds = array( 'redirect' => array( 'LEFT JOIN', array(
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'rd_from = page_id',
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'rd_namespace' => $target->getNamespace(),
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'rd_title' => $target->getDBkey(),
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'rd_interwiki = ' . $dbr->addQuotes( '' ) . ' OR rd_interwiki IS NULL'
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)));
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if ( $fetchlinks ) {
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$options['ORDER BY'] = 'pl_from';
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$plRes = $dbr->select( array( 'pagelinks', 'page', 'redirect' ), $fields,
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$plConds, __METHOD__, $options,
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$joinConds
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);
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}
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if ( !$hidetrans ) {
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$options['ORDER BY'] = 'tl_from';
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$tlRes = $dbr->select( array( 'templatelinks', 'page', 'redirect' ), $fields,
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$tlConds, __METHOD__, $options,
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$joinConds
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);
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}
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if ( !$hideimages ) {
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$options['ORDER BY'] = 'il_from';
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$ilRes = $dbr->select( array( 'imagelinks', 'page', 'redirect' ), $fields,
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$ilConds, __METHOD__, $options,
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$joinConds
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);
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}
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if ( ( !$fetchlinks || !$plRes->numRows() ) && ( $hidetrans || !$tlRes->numRows() ) && ( $hideimages || !$ilRes->numRows() ) ) {
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if ( 0 == $level ) {
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$out->addHTML( $this->whatlinkshereForm() );
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// Show filters only if there are links
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if ( $hidelinks || $hidetrans || $hideredirs || $hideimages ) {
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$out->addHTML( $this->getFilterPanel() );
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}
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$errMsg = is_int( $namespace ) ? 'nolinkshere-ns' : 'nolinkshere';
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$out->addWikiMsg( $errMsg, $this->target->getPrefixedText() );
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}
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return;
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}
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// Read the rows into an array and remove duplicates
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// templatelinks comes second so that the templatelinks row overwrites the
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// pagelinks row, so we get (inclusion) rather than nothing
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if ( $fetchlinks ) {
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foreach ( $plRes as $row ) {
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$row->is_template = 0;
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$row->is_image = 0;
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$rows[$row->page_id] = $row;
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}
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}
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if ( !$hidetrans ) {
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foreach ( $tlRes as $row ) {
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$row->is_template = 1;
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$row->is_image = 0;
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$rows[$row->page_id] = $row;
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}
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}
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if ( !$hideimages ) {
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foreach ( $ilRes as $row ) {
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$row->is_template = 0;
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$row->is_image = 1;
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$rows[$row->page_id] = $row;
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}
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}
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// Sort by key and then change the keys to 0-based indices
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ksort( $rows );
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$rows = array_values( $rows );
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$numRows = count( $rows );
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// Work out the start and end IDs, for prev/next links
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if ( $numRows > $limit ) {
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// More rows available after these ones
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// Get the ID from the last row in the result set
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$nextId = $rows[$limit]->page_id;
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// Remove undisplayed rows
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$rows = array_slice( $rows, 0, $limit );
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} else {
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// No more rows after
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$nextId = false;
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}
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$prevId = $from;
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if ( $level == 0 ) {
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$out->addHTML( $this->whatlinkshereForm() );
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$out->addHTML( $this->getFilterPanel() );
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$out->addWikiMsg( 'linkshere', $this->target->getPrefixedText() );
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$prevnext = $this->getPrevNext( $prevId, $nextId );
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$out->addHTML( $prevnext );
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}
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$out->addHTML( $this->listStart( $level ) );
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foreach ( $rows as $row ) {
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$nt = Title::makeTitle( $row->page_namespace, $row->page_title );
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if ( $row->rd_from && $level < 2 ) {
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$out->addHTML( $this->listItem( $row, $nt, true ) );
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$this->showIndirectLinks( $level + 1, $nt, $wgMaxRedirectLinksRetrieved );
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$out->addHTML( Xml::closeElement( 'li' ) );
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} else {
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$out->addHTML( $this->listItem( $row, $nt ) );
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}
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}
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$out->addHTML( $this->listEnd() );
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if ( $level == 0 ) {
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$out->addHTML( $prevnext );
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}
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}
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protected function listStart( $level ) {
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return Xml::openElement( 'ul', ( $level ? array() : array( 'id' => 'mw-whatlinkshere-list' ) ) );
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}
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protected function listItem( $row, $nt, $notClose = false ) {
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$dirmark = $this->getLanguage()->getDirMark();
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# local message cache
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static $msgcache = null;
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if ( $msgcache === null ) {
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static $msgs = array( 'isredirect', 'istemplate', 'semicolon-separator',
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'whatlinkshere-links', 'isimage' );
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$msgcache = array();
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foreach ( $msgs as $msg ) {
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$msgcache[$msg] = $this->msg( $msg )->escaped();
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}
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}
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if ( $row->rd_from ) {
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$query = array( 'redirect' => 'no' );
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} else {
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$query = array();
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}
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$link = Linker::linkKnown(
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$nt,
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null,
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array(),
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$query
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);
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// Display properties (redirect or template)
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$propsText = '';
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$props = array();
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if ( $row->rd_from ) {
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$props[] = $msgcache['isredirect'];
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}
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if ( $row->is_template ) {
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$props[] = $msgcache['istemplate'];
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}
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if ( $row->is_image ) {
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$props[] = $msgcache['isimage'];
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}
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if ( count( $props ) ) {
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$propsText = $this->msg( 'parentheses' )->rawParams( implode( $msgcache['semicolon-separator'], $props ) )->escaped();
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}
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# Space for utilities links, with a what-links-here link provided
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$wlhLink = $this->wlhLink( $nt, $msgcache['whatlinkshere-links'] );
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$wlh = Xml::wrapClass( $this->msg( 'parentheses' )->rawParams( $wlhLink )->escaped(), 'mw-whatlinkshere-tools' );
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return $notClose ?
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Xml::openElement( 'li' ) . "$link $propsText $dirmark $wlh\n" :
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Xml::tags( 'li', null, "$link $propsText $dirmark $wlh" ) . "\n";
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}
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protected function listEnd() {
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return Xml::closeElement( 'ul' );
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}
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protected function wlhLink( Title $target, $text ) {
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static $title = null;
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if ( $title === null ) {
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$title = $this->getTitle();
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}
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return Linker::linkKnown(
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$title,
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$text,
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array(),
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array( 'target' => $target->getPrefixedText() )
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);
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}
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function makeSelfLink( $text, $query ) {
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return Linker::linkKnown(
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$this->selfTitle,
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$text,
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array(),
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$query
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);
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}
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function getPrevNext( $prevId, $nextId ) {
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$currentLimit = $this->opts->getValue( 'limit' );
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$prev = $this->msg( 'whatlinkshere-prev' )->numParams( $currentLimit )->escaped();
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$next = $this->msg( 'whatlinkshere-next' )->numParams( $currentLimit )->escaped();
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$changed = $this->opts->getChangedValues();
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unset( $changed['target'] ); // Already in the request title
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if ( 0 != $prevId ) {
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$overrides = array( 'from' => $this->opts->getValue( 'back' ) );
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$prev = $this->makeSelfLink( $prev, array_merge( $changed, $overrides ) );
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}
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if ( 0 != $nextId ) {
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$overrides = array( 'from' => $nextId, 'back' => $prevId );
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$next = $this->makeSelfLink( $next, array_merge( $changed, $overrides ) );
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}
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$limitLinks = array();
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$lang = $this->getLanguage();
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foreach ( $this->limits as $limit ) {
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$prettyLimit = htmlspecialchars( $lang->formatNum( $limit ) );
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$overrides = array( 'limit' => $limit );
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$limitLinks[] = $this->makeSelfLink( $prettyLimit, array_merge( $changed, $overrides ) );
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}
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$nums = $lang->pipeList( $limitLinks );
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return $this->msg( 'viewprevnext' )->rawParams( $prev, $next, $nums )->escaped();
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}
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function whatlinkshereForm() {
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global $wgScript;
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// We get nicer value from the title object
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$this->opts->consumeValue( 'target' );
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// Reset these for new requests
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$this->opts->consumeValues( array( 'back', 'from' ) );
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$target = $this->target ? $this->target->getPrefixedText() : '';
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$namespace = $this->opts->consumeValue( 'namespace' );
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# Build up the form
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$f = Xml::openElement( 'form', array( 'action' => $wgScript ) );
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# Values that should not be forgotten
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$f .= Html::hidden( 'title', $this->getTitle()->getPrefixedText() );
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foreach ( $this->opts->getUnconsumedValues() as $name => $value ) {
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$f .= Html::hidden( $name, $value );
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}
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$f .= Xml::fieldset( $this->msg( 'whatlinkshere' )->text() );
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# Target input
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$f .= Xml::inputLabel( $this->msg( 'whatlinkshere-page' )->text(), 'target',
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'mw-whatlinkshere-target', 40, $target );
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$f .= ' ';
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# Namespace selector
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$f .= Html::namespaceSelector(
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array(
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'selected' => $namespace,
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'all' => '',
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'label' => $this->msg( 'namespace' )->text()
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), array(
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'name' => 'namespace',
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'id' => 'namespace',
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'class' => 'namespaceselector',
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)
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);
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$f .= ' ';
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# Submit
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$f .= Xml::submitButton( $this->msg( 'allpagessubmit' )->text() );
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# Close
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$f .= Xml::closeElement( 'fieldset' ) . Xml::closeElement( 'form' ) . "\n";
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return $f;
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}
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/**
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* Create filter panel
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*
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* @return string HTML fieldset and filter panel with the show/hide links
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*/
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function getFilterPanel() {
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$show = $this->msg( 'show' )->escaped();
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$hide = $this->msg( 'hide' )->escaped();
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$changed = $this->opts->getChangedValues();
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unset( $changed['target'] ); // Already in the request title
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$links = array();
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$types = array( 'hidetrans', 'hidelinks', 'hideredirs' );
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if ( $this->target->getNamespace() == NS_FILE ) {
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$types[] = 'hideimages';
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}
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// Combined message keys: 'whatlinkshere-hideredirs', 'whatlinkshere-hidetrans', 'whatlinkshere-hidelinks', 'whatlinkshere-hideimages'
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// To be sure they will be found by grep
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foreach ( $types as $type ) {
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$chosen = $this->opts->getValue( $type );
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$msg = $chosen ? $show : $hide;
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$overrides = array( $type => !$chosen );
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$links[] = $this->msg( "whatlinkshere-{$type}" )->rawParams(
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$this->makeSelfLink( $msg, array_merge( $changed, $overrides ) ) )->escaped();
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}
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return Xml::fieldset( $this->msg( 'whatlinkshere-filters' )->text(), $this->getLanguage()->pipeList( $links ) );
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}
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protected function getGroupName() {
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return 'pagetools';
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}
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}
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