EnhancedChangesList.php

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<?php
class EnhancedChangesList extends ChangesList {

    protected $rc_cache;

    public function beginRecentChangesList() {
        $this->rc_cache = array();
        $this->rcMoveIndex = 0;
        $this->rcCacheIndex = 0;
        $this->lastdate = '';
        $this->rclistOpen = false;
        $this->getOutput()->addModuleStyles( array(
            'mediawiki.special.changeslist',
            'mediawiki.special.changeslist.enhanced',
        ) );
        $this->getOutput()->addModules( array(
            'jquery.makeCollapsible',
            'mediawiki.icon',
        ) );
        return '';
    }
    public function recentChangesLine( &$baseRC, $watched = false ) {
        wfProfileIn( __METHOD__ );

        # Create a specialised object
        $rc = RCCacheEntry::newFromParent( $baseRC );

        $curIdEq = array( 'curid' => $rc->mAttribs['rc_cur_id'] );

        # If it's a new day, add the headline and flush the cache
        $date = $this->getLanguage()->userDate( $rc->mAttribs['rc_timestamp'], $this->getUser() );
        $ret = '';
        if ( $date != $this->lastdate ) {
            # Process current cache
            $ret = $this->recentChangesBlock();
            $this->rc_cache = array();
            $ret .= Xml::element( 'h4', null, $date ) . "\n";
            $this->lastdate = $date;
        }

        # Should patrol-related stuff be shown?
        $rc->unpatrolled = $this->showAsUnpatrolled( $rc );

        $showdifflinks = true;
        # Make article link
        $type = $rc->mAttribs['rc_type'];
        $logType = $rc->mAttribs['rc_log_type'];
        // Page moves, very old style, not supported anymore
        if ( $type == RC_MOVE || $type == RC_MOVE_OVER_REDIRECT ) {
        // New unpatrolled pages
        } elseif ( $rc->unpatrolled && $type == RC_NEW ) {
            $clink = Linker::linkKnown( $rc->getTitle() );
        // Log entries
        } elseif ( $type == RC_LOG ) {
            if ( $logType ) {
                $logtitle = SpecialPage::getTitleFor( 'Log', $logType );
                $logpage = new LogPage( $logType );
                $logname = $logpage->getName()->escaped();
                $clink = $this->msg( 'parentheses' )->rawParams( Linker::linkKnown( $logtitle, $logname ) )->escaped();
            } else {
                $clink = Linker::link( $rc->getTitle() );
            }
            $watched = false;
        // Log entries (old format) and special pages
        } elseif ( $rc->mAttribs['rc_namespace'] == NS_SPECIAL ) {
            wfDebug( "Unexpected special page in recentchanges\n" );
            $clink = '';
        // Edits
        } else {
            $clink = Linker::linkKnown( $rc->getTitle() );
        }

        # Don't show unusable diff links
        if ( !ChangesList::userCan( $rc, Revision::DELETED_TEXT, $this->getUser() ) ) {
            $showdifflinks = false;
        }

        $time = $this->getLanguage()->userTime( $rc->mAttribs['rc_timestamp'], $this->getUser() );
        $rc->watched = $watched;
        $rc->link = $clink;
        $rc->timestamp = $time;
        $rc->numberofWatchingusers = $baseRC->numberofWatchingusers;

        # Make "cur" and "diff" links.  Do not use link(), it is too slow if
        # called too many times (50% of CPU time on RecentChanges!).
        $thisOldid = $rc->mAttribs['rc_this_oldid'];
        $lastOldid = $rc->mAttribs['rc_last_oldid'];

        $querycur = $curIdEq + array( 'diff' => '0', 'oldid' => $thisOldid );
        $querydiff = $curIdEq + array( 'diff' => $thisOldid, 'oldid' => $lastOldid );

        if ( !$showdifflinks ) {
            $curLink = $this->message['cur'];
            $diffLink = $this->message['diff'];
        } elseif ( in_array( $type, array( RC_NEW, RC_LOG, RC_MOVE, RC_MOVE_OVER_REDIRECT ) ) ) {
            if ( $type != RC_NEW ) {
                $curLink = $this->message['cur'];
            } else {
                $curUrl = htmlspecialchars( $rc->getTitle()->getLinkURL( $querycur ) );
                $curLink = "<a href=\"$curUrl\" tabindex=\"{$baseRC->counter}\">{$this->message['cur']}</a>";
            }
            $diffLink = $this->message['diff'];
        } else {
            $diffUrl = htmlspecialchars( $rc->getTitle()->getLinkURL( $querydiff ) );
            $curUrl = htmlspecialchars( $rc->getTitle()->getLinkURL( $querycur ) );
            $diffLink = "<a href=\"$diffUrl\" tabindex=\"{$baseRC->counter}\">{$this->message['diff']}</a>";
            $curLink = "<a href=\"$curUrl\" tabindex=\"{$baseRC->counter}\">{$this->message['cur']}</a>";
        }

        # Make "last" link
        if ( !$showdifflinks || !$lastOldid ) {
            $lastLink = $this->message['last'];
        } elseif ( in_array( $type, array( RC_LOG, RC_MOVE, RC_MOVE_OVER_REDIRECT ) ) ) {
            $lastLink = $this->message['last'];
        } else {
            $lastLink = Linker::linkKnown( $rc->getTitle(), $this->message['last'],
                array(), $curIdEq + array( 'diff' => $thisOldid, 'oldid' => $lastOldid ) );
        }

        # Make user links
        if ( $this->isDeleted( $rc, Revision::DELETED_USER ) ) {
            $rc->userlink = ' <span class="history-deleted">' . $this->msg( 'rev-deleted-user' )->escaped() . '</span>';
        } else {
            $rc->userlink = Linker::userLink( $rc->mAttribs['rc_user'], $rc->mAttribs['rc_user_text'] );
            $rc->usertalklink = Linker::userToolLinks( $rc->mAttribs['rc_user'], $rc->mAttribs['rc_user_text'] );
        }

        $rc->lastlink = $lastLink;
        $rc->curlink = $curLink;
        $rc->difflink = $diffLink;

        # Put accumulated information into the cache, for later display
        # Page moves go on their own line
        $title = $rc->getTitle();
        $secureName = $title->getPrefixedDBkey();
        if ( $type == RC_MOVE || $type == RC_MOVE_OVER_REDIRECT ) {
            # Use an @ character to prevent collision with page names
            $this->rc_cache['@@' . ( $this->rcMoveIndex++ )] = array( $rc );
        } else {
            # Logs are grouped by type
            if ( $type == RC_LOG ) {
                $secureName = SpecialPage::getTitleFor( 'Log', $logType )->getPrefixedDBkey();
            }
            if ( !isset( $this->rc_cache[$secureName] ) ) {
                $this->rc_cache[$secureName] = array();
            }

            array_push( $this->rc_cache[$secureName], $rc );
        }

        wfProfileOut( __METHOD__ );

        return $ret;
    }

    protected function recentChangesBlockGroup( $block ) {
        global $wgRCShowChangedSize;

        wfProfileIn( __METHOD__ );

        # Add the namespace and title of the block as part of the class
        $classes = array( 'mw-collapsible', 'mw-collapsed', 'mw-enhanced-rc' );
        if ( $block[0]->mAttribs['rc_log_type'] ) {
            # Log entry
            $classes[] = Sanitizer::escapeClass( 'mw-changeslist-log-'
                . $block[0]->mAttribs['rc_log_type'] );
        } else {
            $classes[] = Sanitizer::escapeClass( 'mw-changeslist-ns'
                    . $block[0]->mAttribs['rc_namespace'] . '-' . $block[0]->mAttribs['rc_title'] );
        }
        $classes[] = $block[0]->watched && $block[0]->mAttribs['rc_timestamp'] >= $block[0]->watched
            ? 'mw-changeslist-line-watched' : 'mw-changeslist-line-not-watched';
        $r = Html::openElement( 'table', array( 'class' => $classes ) ) .
            Html::openElement( 'tr' );

        # Collate list of users
        $userlinks = array();
        # Other properties
        $unpatrolled = false;
        $isnew = false;
        $allBots = true;
        $allMinors = true;
        $curId = $currentRevision = 0;
        # Some catalyst variables...
        $namehidden = true;
        $allLogs = true;
        foreach ( $block as $rcObj ) {
            $oldid = $rcObj->mAttribs['rc_last_oldid'];
            if ( $rcObj->mAttribs['rc_type'] == RC_NEW ) {
                $isnew = true;
            }
            // If all log actions to this page were hidden, then don't
            // give the name of the affected page for this block!
            if ( !$this->isDeleted( $rcObj, LogPage::DELETED_ACTION ) ) {
                $namehidden = false;
            }
            $u = $rcObj->userlink;
            if ( !isset( $userlinks[$u] ) ) {
                $userlinks[$u] = 0;
            }
            if ( $rcObj->unpatrolled ) {
                $unpatrolled = true;
            }
            if ( $rcObj->mAttribs['rc_type'] != RC_LOG ) {
                $allLogs = false;
            }
            # Get the latest entry with a page_id and oldid
            # since logs may not have these.
            if ( !$curId && $rcObj->mAttribs['rc_cur_id'] ) {
                $curId = $rcObj->mAttribs['rc_cur_id'];
            }
            if ( !$currentRevision && $rcObj->mAttribs['rc_this_oldid'] ) {
                $currentRevision = $rcObj->mAttribs['rc_this_oldid'];
            }

            if ( !$rcObj->mAttribs['rc_bot'] ) {
                $allBots = false;
            }
            if ( !$rcObj->mAttribs['rc_minor'] ) {
                $allMinors = false;
            }

            $userlinks[$u]++;
        }

        # Sort the list and convert to text
        krsort( $userlinks );
        asort( $userlinks );
        $users = array();
        foreach ( $userlinks as $userlink => $count ) {
            $text = $userlink;
            $text .= $this->getLanguage()->getDirMark();
            if ( $count > 1 ) {
                $text .= ' ' . $this->msg( 'parentheses' )->rawParams( $this->getLanguage()->formatNum( $count ) . '×' )->escaped();
            }
            array_push( $users, $text );
        }

        $users = ' <span class="changedby">'
            . $this->msg( 'brackets' )->rawParams(
                implode( $this->message['semicolon-separator'], $users )
            )->escaped() . '</span>';

        $tl = '<span class="mw-collapsible-toggle mw-collapsible-arrow mw-enhancedchanges-arrow mw-enhancedchanges-arrow-space"></span>';
        $r .= "<td>$tl</td>";

        # Main line
        $r .= '<td class="mw-enhanced-rc">' . $this->recentChangesFlags( array(
            'newpage' => $isnew, # show, when one have this flag
            'minor' => $allMinors, # show only, when all have this flag
            'unpatrolled' => $unpatrolled, # show, when one have this flag
            'bot' => $allBots, # show only, when all have this flag
        ) );

        # Timestamp
        $r .= '&#160;' . $block[0]->timestamp . '&#160;</td><td>';

        # Article link
        if ( $namehidden ) {
            $r .= ' <span class="history-deleted">' . $this->msg( 'rev-deleted-event' )->escaped() . '</span>';
        } elseif ( $allLogs ) {
            $r .= $this->maybeWatchedLink( $block[0]->link, $block[0]->watched );
        } else {
            $this->insertArticleLink( $r, $block[0], $block[0]->unpatrolled, $block[0]->watched );
        }

        $r .= $this->getLanguage()->getDirMark();

        $queryParams['curid'] = $curId;

        # Changes message
        static $nchanges = array();
        static $sinceLastVisitMsg = array();

        $n = count( $block );
        if ( !isset( $nchanges[$n] ) ) {
            $nchanges[$n] = $this->msg( 'nchanges' )->numParams( $n )->escaped();
        }

        $sinceLast = 0;
        $unvisitedOldid = null;
        foreach ( $block as $rcObj ) {
            // Same logic as below inside main foreach
            if ( $rcObj->watched && $rcObj->mAttribs['rc_timestamp'] >= $rcObj->watched ) {
                $sinceLast++;
                $unvisitedOldid = $rcObj->mAttribs['rc_last_oldid'];
            }
        }
        if ( !isset( $sinceLastVisitMsg[$sinceLast] ) ) {
            $sinceLastVisitMsg[$sinceLast] =
                $this->msg( 'enhancedrc-since-last-visit' )->numParams( $sinceLast )->escaped();
        }

        # Total change link
        $r .= ' ';
        $logtext = '';
        if ( !$allLogs ) {
            if ( !ChangesList::userCan( $rcObj, Revision::DELETED_TEXT, $this->getUser() ) ) {
                $logtext .= $nchanges[$n];
            } elseif ( $isnew ) {
                $logtext .= $nchanges[$n];
            } else {
                $logtext .= Linker::link(
                    $block[0]->getTitle(),
                    $nchanges[$n],
                    array(),
                    $queryParams + array(
                        'diff' => $currentRevision,
                        'oldid' => $oldid,
                    ),
                    array( 'known', 'noclasses' )
                );
                if ( $sinceLast > 0 && $sinceLast < $n ) {
                    $logtext .= $this->message['pipe-separator'] . Linker::link(
                        $block[0]->getTitle(),
                        $sinceLastVisitMsg[$sinceLast],
                        array(),
                        $queryParams + array(
                            'diff' => $currentRevision,
                            'oldid' => $unvisitedOldid,
                        ),
                        array( 'known', 'noclasses' )
                    );
                }
            }
        }

        # History
        if ( $allLogs ) {
            // don't show history link for logs
        } elseif ( $namehidden || !$block[0]->getTitle()->exists() ) {
            $logtext .= $this->message['pipe-separator'] . $this->message['enhancedrc-history'];
        } else {
            $params = $queryParams;
            $params['action'] = 'history';

            $logtext .= $this->message['pipe-separator'] .
                Linker::linkKnown(
                    $block[0]->getTitle(),
                    $this->message['enhancedrc-history'],
                    array(),
                    $params
                );
        }

        if ( $logtext !== '' ) {
            $r .= $this->msg( 'parentheses' )->rawParams( $logtext )->escaped();
        }

        $r .= ' <span class="mw-changeslist-separator">. .</span> ';

        # Character difference (does not apply if only log items)
        if ( $wgRCShowChangedSize && !$allLogs ) {
            $last = 0;
            $first = count( $block ) - 1;
            # Some events (like logs) have an "empty" size, so we need to skip those...
            while ( $last < $first && $block[$last]->mAttribs['rc_new_len'] === null ) {
                $last++;
            }
            while ( $first > $last && $block[$first]->mAttribs['rc_old_len'] === null ) {
                $first--;
            }
            # Get net change
            $chardiff = $this->formatCharacterDifference( $block[$first], $block[$last] );

            if ( $chardiff == '' ) {
                $r .= ' ';
            } else {
                $r .= ' ' . $chardiff . ' <span class="mw-changeslist-separator">. .</span> ';
            }
        }

        $r .= $users;
        $r .= $this->numberofWatchingusers( $block[0]->numberofWatchingusers );

        # Sub-entries
        foreach ( $block as $rcObj ) {
            # Classes to apply -- TODO implement
            $classes = array();
            $type = $rcObj->mAttribs['rc_type'];

            $trClass = $rcObj->watched && $rcObj->mAttribs['rc_timestamp'] >= $rcObj->watched
                ? ' class="mw-enhanced-watched"' : '';

            $r .= '<tr' . $trClass . '><td></td><td class="mw-enhanced-rc">';
            $r .= $this->recentChangesFlags( array(
                'newpage' => $type == RC_NEW,
                'minor' => $rcObj->mAttribs['rc_minor'],
                'unpatrolled' => $rcObj->unpatrolled,
                'bot' => $rcObj->mAttribs['rc_bot'],
            ) );
            $r .= '&#160;</td><td class="mw-enhanced-rc-nested"><span class="mw-enhanced-rc-time">';

            $params = $queryParams;

            if ( $rcObj->mAttribs['rc_this_oldid'] != 0 ) {
                $params['oldid'] = $rcObj->mAttribs['rc_this_oldid'];
            }

            # Log timestamp
            if ( $type == RC_LOG ) {
                $link = $rcObj->timestamp;
            # Revision link
            } elseif ( !ChangesList::userCan( $rcObj, Revision::DELETED_TEXT, $this->getUser() ) ) {
                $link = '<span class="history-deleted">' . $rcObj->timestamp . '</span> ';
            } else {

                $link = Linker::linkKnown(
                        $rcObj->getTitle(),
                        $rcObj->timestamp,
                        array(),
                        $params
                    );
                if ( $this->isDeleted( $rcObj, Revision::DELETED_TEXT ) ) {
                    $link = '<span class="history-deleted">' . $link . '</span> ';
                }
            }
            $r .= $link . '</span>';

            if ( !$type == RC_LOG || $type == RC_NEW ) {
                $r .= ' ' . $this->msg( 'parentheses' )->rawParams( $rcObj->curlink . $this->message['pipe-separator'] . $rcObj->lastlink )->escaped();
            }
            $r .= ' <span class="mw-changeslist-separator">. .</span> ';

            # Character diff
            if ( $wgRCShowChangedSize ) {
                $cd = $this->formatCharacterDifference( $rcObj );
                if ( $cd !== '' ) {
                    $r .= $cd . ' <span class="mw-changeslist-separator">. .</span> ';
                }
            }

            if ( $rcObj->mAttribs['rc_type'] == RC_LOG ) {
                $r .= $this->insertLogEntry( $rcObj );
            } else {
                # User links
                $r .= $rcObj->userlink;
                $r .= $rcObj->usertalklink;
                $r .= $this->insertComment( $rcObj );
            }

            # Rollback
            $this->insertRollback( $r, $rcObj );
            # Tags
            $this->insertTags( $r, $rcObj, $classes );

            $r .= "</td></tr>\n";
        }
        $r .= "</table>\n";

        $this->rcCacheIndex++;

        wfProfileOut( __METHOD__ );

        return $r;
    }

    protected function arrow( $dir, $alt = '', $title = '' ) {
        global $wgStylePath;
        $encUrl = htmlspecialchars( $wgStylePath . '/common/images/Arr_' . $dir . '.png' );
        $encAlt = htmlspecialchars( $alt );
        $encTitle = htmlspecialchars( $title );
        return "<img src=\"$encUrl\" width=\"12\" height=\"12\" alt=\"$encAlt\" title=\"$encTitle\" />";
    }

    protected function sideArrow() {
        $dir = $this->getLanguage()->isRTL() ? 'l' : 'r';
        return $this->arrow( $dir, '+', $this->msg( 'rc-enhanced-expand' )->text() );
    }

    protected function downArrow() {
        return $this->arrow( 'd', '-', $this->msg( 'rc-enhanced-hide' )->text() );
    }

    protected function spacerArrow() {
        return $this->arrow( '', codepointToUtf8( 0xa0 ) ); // non-breaking space
    }

    protected function recentChangesBlockLine( $rcObj ) {
        global $wgRCShowChangedSize;

        wfProfileIn( __METHOD__ );
        $query['curid'] = $rcObj->mAttribs['rc_cur_id'];

        $type = $rcObj->mAttribs['rc_type'];
        $logType = $rcObj->mAttribs['rc_log_type'];
        $classes = array( 'mw-enhanced-rc' );
        if ( $logType ) {
            # Log entry
+           $classes[] = Sanitizer::escapeClass( 'mw-changeslist-log-' . $logType );
        } else {
            $classes[] = Sanitizer::escapeClass( 'mw-changeslist-ns' .
                    $rcObj->mAttribs['rc_namespace'] . '-' . $rcObj->mAttribs['rc_title'] );
        }
        $classes[] = $rcObj->watched && $rcObj->mAttribs['rc_timestamp'] >= $rcObj->watched
            ? 'mw-changeslist-line-watched' : 'mw-changeslist-line-not-watched';
        $r = Html::openElement( 'table', array( 'class' => $classes ) ) .
            Html::openElement( 'tr' );

        $r .= '<td class="mw-enhanced-rc"><span class="mw-enhancedchanges-arrow-space"></span>';
        # Flag and Timestamp
        if ( $type == RC_MOVE || $type == RC_MOVE_OVER_REDIRECT ) {
            $r .= $this->recentChangesFlags( array() ); // no flags, but need the placeholders
        } else {
            $r .= $this->recentChangesFlags( array(
                'newpage' => $type == RC_NEW,
                'minor' => $rcObj->mAttribs['rc_minor'],
                'unpatrolled' => $rcObj->unpatrolled,
                'bot' => $rcObj->mAttribs['rc_bot'],
            ) );
        }
        $r .= '&#160;' . $rcObj->timestamp . '&#160;</td><td>';
        # Article or log link
        if ( $logType ) {
            $logPage = new LogPage( $logType );
            $logTitle = SpecialPage::getTitleFor( 'Log', $logType );
            $logName = $logPage->getName()->escaped();
            $r .= $this->msg( 'parentheses' )->rawParams( Linker::linkKnown( $logTitle, $logName ) )->escaped();
        } else {
            $this->insertArticleLink( $r, $rcObj, $rcObj->unpatrolled, $rcObj->watched );
        }
        # Diff and hist links
        if ( $type != RC_LOG ) {
            $query['action'] = 'history';
            $r .= ' ' . $this->msg( 'parentheses' )->rawParams( $rcObj->difflink . $this->message['pipe-separator'] . Linker::linkKnown(
                $rcObj->getTitle(),
                $this->message['hist'],
                array(),
                $query
            ) )->escaped();
        }
        $r .= ' <span class="mw-changeslist-separator">. .</span> ';
        # Character diff
        if ( $wgRCShowChangedSize ) {
            $cd = $this->formatCharacterDifference( $rcObj );
            if ( $cd !== '' ) {
                $r .= $cd . ' <span class="mw-changeslist-separator">. .</span> ';
            }
        }

        if ( $type == RC_LOG ) {
            $r .= $this->insertLogEntry( $rcObj );
        } else {
            $r .= ' ' . $rcObj->userlink . $rcObj->usertalklink;
            $r .= $this->insertComment( $rcObj );
            $this->insertRollback( $r, $rcObj );
        }

        # Tags
        $this->insertTags( $r, $rcObj, $classes );
        # Show how many people are watching this if enabled
        $r .= $this->numberofWatchingusers( $rcObj->numberofWatchingusers );

        $r .= "</td></tr></table>\n";

        wfProfileOut( __METHOD__ );

        return $r;
    }

    protected function recentChangesBlock() {
        if ( count ( $this->rc_cache ) == 0 ) {
            return '';
        }

        wfProfileIn( __METHOD__ );

        $blockOut = '';
        foreach ( $this->rc_cache as $block ) {
            if ( count( $block ) < 2 ) {
                $blockOut .= $this->recentChangesBlockLine( array_shift( $block ) );
            } else {
                $blockOut .= $this->recentChangesBlockGroup( $block );
            }
        }

        wfProfileOut( __METHOD__ );

        return '<div>' . $blockOut . '</div>';
    }

    public function endRecentChangesList() {
        return $this->recentChangesBlock() . parent::endRecentChangesList();
    }

}