+++ /dev/null
-<?php
-
-if (!defined( 'MEDIAWIKI' ))
- die;
-
-class ChangeTags {
- static function formatSummaryRow( $tags, $page ) {
- if (!$tags)
- return array('',array());
-
- $classes = array();
-
- $tags = explode( ',', $tags );
- $displayTags = array();
- foreach( $tags as $tag ) {
- $displayTags[] = self::tagDescription( $tag );
- $classes[] = "mw-tag-$tag";
- }
-
- return array( '(' . implode( ', ', $displayTags ) . ')', $classes );
- }
-
- static function tagDescription( $tag ) {
- $msg = wfMsgExt( "tag-$tag", 'parseinline' );
- if ( wfEmptyMsg( "tag-$tag", $msg ) ) {
- return htmlspecialchars($tag);
- }
- return $msg;
- }
-
- ## Basic utility method to add tags to a particular change, given its rc_id, rev_id and/or log_id.
- static function addTags( $tags, $rc_id=null, $rev_id=null, $log_id=null, $params = null ) {
- if ( !is_array($tags) ) {
- $tags = array( $tags );
- }
-
- $tags = array_filter( $tags ); // Make sure we're submitting all tags...
-
- if (!$rc_id && !$rev_id && !$log_id) {
- throw new MWException( "At least one of: RCID, revision ID, and log ID MUST be specified when adding a tag to a change!" );
- }
-
- $dbr = wfGetDB( DB_SLAVE );
-
- // Might as well look for rcids and so on.
- if (!$rc_id) {
- $dbr = wfGetDB( DB_MASTER ); // Info might be out of date, somewhat fractionally, on slave.
- if ($log_id) {
- $rc_id = $dbr->selectField( 'recentchanges', 'rc_id', array( 'rc_logid' => $log_id ), __METHOD__ );
- } elseif ($rev_id) {
- $rc_id = $dbr->selectField( 'recentchanges', 'rc_id', array( 'rc_this_oldid' => $rev_id ), __METHOD__ );
- }
- } elseif (!$log_id && !$rev_id) {
- $dbr = wfGetDB( DB_MASTER ); // Info might be out of date, somewhat fractionally, on slave.
- $log_id = $dbr->selectField( 'recentchanges', 'rc_logid', array( 'rc_id' => $rc_id ), __METHOD__ );
- $rev_id = $dbr->selectField( 'recentchanges', 'rc_this_oldid', array( 'rc_id' => $rc_id ), __METHOD__ );
- }
-
- $tsConds = array_filter( array( 'ts_rc_id' => $rc_id, 'ts_rev_id' => $rev_id, 'ts_log_id' => $log_id ) );
-
- ## Update the summary row.
- $prevTags = $dbr->selectField( 'tag_summary', 'ts_tags', $tsConds, __METHOD__ );
- $prevTags = $prevTags ? $prevTags : '';
- $prevTags = array_filter( explode( ',', $prevTags ) );
- $newTags = array_unique( array_merge( $prevTags, $tags ) );
- sort($prevTags);
- sort($newTags);
-
- if ( $prevTags == $newTags ) {
- // No change.
- return false;
- }
-
- $dbw = wfGetDB( DB_MASTER );
- $dbw->replace( 'tag_summary', array( 'ts_rev_id', 'ts_rc_id', 'ts_log_id' ), array_filter( array_merge( $tsConds, array( 'ts_tags' => implode( ',', $newTags ) ) ) ), __METHOD__ );
-
- // Insert the tags rows.
- $tagsRows = array();
- foreach( $tags as $tag ) { // Filter so we don't insert NULLs as zero accidentally.
- $tagsRows[] = array_filter( array( 'ct_tag' => $tag, 'ct_rc_id' => $rc_id, 'ct_log_id' => $log_id, 'ct_rev_id' => $rev_id, 'ct_params' => $params ) );
- }
-
- $dbw->insert( 'change_tag', $tagsRows, __METHOD__, array('IGNORE') );
-
- return true;
- }
-
- /**
- * Applies all tags-related changes to a query.
- * Handles selecting tags, and filtering.
- * Needs $tables to be set up properly, so we can figure out which join conditions to use.
- */
- static function modifyDisplayQuery( &$tables, &$fields, &$conds,
- &$join_conds, &$options, $filter_tag = false ) {
- global $wgRequest, $wgUseTagFilter;
-
- if ($filter_tag === false) {
- $filter_tag = $wgRequest->getVal( 'tagfilter' );
- }
-
- // Figure out which conditions can be done.
- $join_field = '';
- if ( in_array('recentchanges', $tables) ) {
- $join_cond = 'rc_id';
- } elseif( in_array('logging', $tables) ) {
- $join_cond = 'log_id';
- } elseif ( in_array('revision', $tables) ) {
- $join_cond = 'rev_id';
- } else {
- throw new MWException( "Unable to determine appropriate JOIN condition for tagging." );
- }
-
- // JOIN on tag_summary
- $tables[] = 'tag_summary';
- $join_conds['tag_summary'] = array( 'LEFT JOIN', "ts_$join_cond=$join_cond" );
- $fields[] = 'ts_tags';
-
- if ($wgUseTagFilter && $filter_tag) {
- // Somebody wants to filter on a tag.
- // Add an INNER JOIN on change_tag
-
- // FORCE INDEX -- change_tags will almost ALWAYS be the correct query plan.
- $options['USE INDEX'] = array( 'change_tag' => 'change_tag_tag_id' );
- unset( $options['FORCE INDEX'] );
- $tables[] = 'change_tag';
- $join_conds['change_tag'] = array( 'INNER JOIN', "ct_$join_cond=$join_cond" );
- $conds['ct_tag'] = $filter_tag;
- }
- }
-
- /**
- * If $fullForm is set to false, then it returns an array of (label, form).
- * If $fullForm is true, it returns an entire form.
- */
- static function buildTagFilterSelector( $selected='', $fullForm = false /* used to put a full form around the selector */ ) {
- global $wgUseTagFilter;
-
- if ( !$wgUseTagFilter || !count( self::listDefinedTags() ) )
- return $fullForm ? '' : array();
-
- global $wgTitle;
-
- $data = array( wfMsgExt( 'tag-filter', 'parseinline' ), Xml::input( 'tagfilter', 20, $selected ) );
-
- if (!$fullForm) {
- return $data;
- }
-
- $html = implode( ' ', $data );
- $html .= "\n" . Xml::element( 'input', array( 'type' => 'submit', 'value' => wfMsg( 'tag-filter-submit' ) ) );
- $html .= "\n" . Xml::hidden( 'title', $wgTitle-> getPrefixedText() );
- $html = Xml::tags( 'form', array( 'action' => $wgTitle->getLocalURL(), 'method' => 'get' ), $html );
-
- return $html;
- }
-
- /** Basically lists defined tags which count even if they aren't applied to anything */
- static function listDefinedTags() {
- // Caching...
- global $wgMemc;
- $key = wfMemcKey( 'valid-tags' );
-
- if ($tags = $wgMemc->get( $key ))
- return $tags;
-
- $emptyTags = array();
-
- // Some DB stuff
- $dbr = wfGetDB( DB_SLAVE );
- $res = $dbr->select( 'valid_tag', 'vt_tag', array(), __METHOD__ );
- while( $row = $res->fetchObject() ) {
- $emptyTags[] = $row->vt_tag;
- }
-
- wfRunHooks( 'ListDefinedTags', array(&$emptyTags) );
-
- $emptyTags = array_filter( array_unique( $emptyTags ) );
-
- // Short-term caching.
- $wgMemc->set( $key, $emptyTags, 300 );
- return $emptyTags;
- }
-}
scripts.mit.edu / autoinstallsdev / mediawiki.git / blobdiff