mirror of
https://github.com/YunoHost-Apps/mediawiki_ynh.git
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268 lines
8 KiB
PHP
268 lines
8 KiB
PHP
<?php
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/**
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* Implements Special:Recentchangeslinked
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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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* @ingroup SpecialPage
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*/
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/**
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* This is to display changes made to all articles linked in an article.
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*
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* @ingroup SpecialPage
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*/
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class SpecialRecentchangeslinked extends SpecialRecentChanges {
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var $rclTargetTitle;
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function __construct() {
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parent::__construct( 'Recentchangeslinked' );
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}
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public function getDefaultOptions() {
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$opts = parent::getDefaultOptions();
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$opts->add( 'target', '' );
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$opts->add( 'showlinkedto', false );
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return $opts;
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}
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public function parseParameters( $par, FormOptions $opts ) {
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$opts['target'] = $par;
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}
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public function feedSetup() {
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$opts = parent::feedSetup();
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$opts['target'] = $this->getRequest()->getVal( 'target' );
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return $opts;
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}
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public function getFeedObject( $feedFormat ) {
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$feed = new ChangesFeed( $feedFormat, false );
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$feedObj = $feed->getFeedObject(
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$this->msg( 'recentchangeslinked-title', $this->getTargetTitle()->getPrefixedText() )
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->inContentLanguage()->text(),
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$this->msg( 'recentchangeslinked-feed' )->inContentLanguage()->text(),
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$this->getTitle()->getFullURL()
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);
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return array( $feed, $feedObj );
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}
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public function doMainQuery( $conds, $opts ) {
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$target = $opts['target'];
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$showlinkedto = $opts['showlinkedto'];
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$limit = $opts['limit'];
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if ( $target === '' ) {
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return false;
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}
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$outputPage = $this->getOutput();
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$title = Title::newFromURL( $target );
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if ( !$title || $title->getInterwiki() != '' ) {
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$outputPage->wrapWikiMsg( "<div class=\"errorbox\">\n$1\n</div>", 'allpagesbadtitle' );
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return false;
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}
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$outputPage->setPageTitle( $this->msg( 'recentchangeslinked-title', $title->getPrefixedText() ) );
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/*
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* Ordinary links are in the pagelinks table, while transclusions are
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* in the templatelinks table, categorizations in categorylinks and
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* image use in imagelinks. We need to somehow combine all these.
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* Special:Whatlinkshere does this by firing multiple queries and
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* merging the results, but the code we inherit from our parent class
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* expects only one result set so we use UNION instead.
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*/
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$dbr = wfGetDB( DB_SLAVE, 'recentchangeslinked' );
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$id = $title->getArticleID();
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$ns = $title->getNamespace();
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$dbkey = $title->getDBkey();
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$tables = array( 'recentchanges' );
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$select = RecentChange::selectFields();
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$join_conds = array();
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$query_options = array();
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// left join with watchlist table to highlight watched rows
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$uid = $this->getUser()->getId();
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if ( $uid && $this->getUser()->isAllowed( 'viewmywatchlist' ) ) {
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$tables[] = 'watchlist';
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$select[] = 'wl_user';
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$join_conds['watchlist'] = array( 'LEFT JOIN', array(
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'wl_user' => $uid,
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'wl_title=rc_title',
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'wl_namespace=rc_namespace'
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));
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}
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if ( $this->getUser()->isAllowed( 'rollback' ) ) {
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$tables[] = 'page';
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$join_conds['page'] = array( 'LEFT JOIN', 'rc_cur_id=page_id' );
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$select[] = 'page_latest';
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}
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ChangeTags::modifyDisplayQuery(
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$tables,
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$select,
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$conds,
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$join_conds,
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$query_options,
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$opts['tagfilter']
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);
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if ( !wfRunHooks( 'SpecialRecentChangesQuery', array( &$conds, &$tables, &$join_conds, $opts, &$query_options, &$select ) ) ) {
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return false;
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}
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if ( $ns == NS_CATEGORY && !$showlinkedto ) {
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// special handling for categories
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// XXX: should try to make this less kludgy
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$link_tables = array( 'categorylinks' );
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$showlinkedto = true;
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} else {
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// for now, always join on these tables; really should be configurable as in whatlinkshere
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$link_tables = array( 'pagelinks', 'templatelinks' );
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// imagelinks only contains links to pages in NS_FILE
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if ( $ns == NS_FILE || !$showlinkedto ) {
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$link_tables[] = 'imagelinks';
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}
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}
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if ( $id == 0 && !$showlinkedto ) {
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return false; // nonexistent pages can't link to any pages
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}
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// field name prefixes for all the various tables we might want to join with
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$prefix = array( 'pagelinks' => 'pl', 'templatelinks' => 'tl', 'categorylinks' => 'cl', 'imagelinks' => 'il' );
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$subsql = array(); // SELECT statements to combine with UNION
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foreach ( $link_tables as $link_table ) {
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$pfx = $prefix[$link_table];
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// imagelinks and categorylinks tables have no xx_namespace field, and have xx_to instead of xx_title
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if ( $link_table == 'imagelinks' ) {
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$link_ns = NS_FILE;
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} elseif ( $link_table == 'categorylinks' ) {
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$link_ns = NS_CATEGORY;
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} else {
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$link_ns = 0;
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}
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if ( $showlinkedto ) {
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// find changes to pages linking to this page
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if ( $link_ns ) {
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if ( $ns != $link_ns ) {
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continue;
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} // should never happen, but check anyway
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$subconds = array( "{$pfx}_to" => $dbkey );
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} else {
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$subconds = array( "{$pfx}_namespace" => $ns, "{$pfx}_title" => $dbkey );
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}
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$subjoin = "rc_cur_id = {$pfx}_from";
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} else {
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// find changes to pages linked from this page
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$subconds = array( "{$pfx}_from" => $id );
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if ( $link_table == 'imagelinks' || $link_table == 'categorylinks' ) {
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$subconds["rc_namespace"] = $link_ns;
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$subjoin = "rc_title = {$pfx}_to";
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} else {
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$subjoin = array( "rc_namespace = {$pfx}_namespace", "rc_title = {$pfx}_title" );
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}
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}
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if ( $dbr->unionSupportsOrderAndLimit() ) {
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$order = array( 'ORDER BY' => 'rc_timestamp DESC' );
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} else {
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$order = array();
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}
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$query = $dbr->selectSQLText(
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array_merge( $tables, array( $link_table ) ),
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$select,
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$conds + $subconds,
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__METHOD__,
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$order + $query_options,
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$join_conds + array( $link_table => array( 'INNER JOIN', $subjoin ) )
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);
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if ( $dbr->unionSupportsOrderAndLimit() ) {
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$query = $dbr->limitResult( $query, $limit );
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}
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$subsql[] = $query;
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}
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if ( count( $subsql ) == 0 ) {
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return false; // should never happen
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}
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if ( count( $subsql ) == 1 && $dbr->unionSupportsOrderAndLimit() ) {
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$sql = $subsql[0];
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} else {
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// need to resort and relimit after union
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$sql = $dbr->unionQueries( $subsql, false ) . ' ORDER BY rc_timestamp DESC';
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$sql = $dbr->limitResult( $sql, $limit, false );
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}
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$res = $dbr->query( $sql, __METHOD__ );
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if ( $res->numRows() == 0 ) {
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$this->mResultEmpty = true;
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}
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return $res;
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}
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/**
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* Get options to be displayed in a form
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*
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* @param FormOptions $opts
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* @return array
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*/
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function getExtraOptions( $opts ) {
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$extraOpts = parent::getExtraOptions( $opts );
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$opts->consumeValues( array( 'showlinkedto', 'target' ) );
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$extraOpts['target'] = array( $this->msg( 'recentchangeslinked-page' )->escaped(),
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Xml::input( 'target', 40, str_replace( '_', ' ', $opts['target'] ) ) .
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Xml::check( 'showlinkedto', $opts['showlinkedto'], array( 'id' => 'showlinkedto' ) ) . ' ' .
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Xml::label( $this->msg( 'recentchangeslinked-to' )->text(), 'showlinkedto' ) );
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return $extraOpts;
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}
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/**
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* @return Title
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*/
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function getTargetTitle() {
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if ( $this->rclTargetTitle === null ) {
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$opts = $this->getOptions();
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if ( isset( $opts['target'] ) && $opts['target'] !== '' ) {
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$this->rclTargetTitle = Title::newFromText( $opts['target'] );
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} else {
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$this->rclTargetTitle = false;
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}
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}
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return $this->rclTargetTitle;
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}
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function setTopText( FormOptions $opts ) {
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$target = $this->getTargetTitle();
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if ( $target ) {
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$this->getOutput()->addBacklinkSubtitle( $target );
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}
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}
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}
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