--- /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+ $dbr = wfGetDB( DB_MASTER ); // Info might be out of date, somewhat fractionally, on slave.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+ $dbr = wfGetDB( DB_MASTER ); // Info might be out of date, somewhat fractionally, on slave.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