EnhancedChangesList.php

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<?php
class EnhancedChangesList extends ChangesList {
 
    protected $cacheEntryFactory;
 
    protected $rc_cache;
 
    public function __construct( $obj ) {
        if ( $obj instanceof Skin ) {
            // @todo: deprecate constructing with Skin
            $context = $obj->getContext();
        } else {
            if ( ! $obj instanceof IContextSource ) {
                throw new MWException( 'EnhancedChangesList must be constructed with a '
                    . 'context source or skin.' );
            }
 
            $context = $obj;
        }
 
        parent::__construct( $context );
 
        // message is set by the parent ChangesList class
        $this->cacheEntryFactory = new RCCacheEntryFactory(
            $context,
            $this->message
        );
    }
 
    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 '<div class="mw-changeslist">';
    }
 
    public function recentChangesLine( &$baseRC, $watched = false ) {
        wfProfileIn( __METHOD__ );
 
        # If it's a new day, add the headline and flush the cache
        $date = $this->getLanguage()->userDate(
            $baseRC->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;
        }
 
        $cacheEntry = $this->cacheEntryFactory->newFromRecentChange( $baseRC, $watched );
        $this->addCacheEntry( $cacheEntry );
 
        wfProfileOut( __METHOD__ );
 
        return $ret;
    }
 
    protected function addCacheEntry( RCCacheEntry $cacheEntry ) {
        $title = $cacheEntry->getTitle();
        $secureName = $title->getPrefixedDBkey();
 
        $type = $cacheEntry->mAttribs['rc_type'];
 
        if ( $type == RC_MOVE || $type == RC_MOVE_OVER_REDIRECT ) {
            # Use an @ character to prevent collision with page names
            $this->rc_cache['@@' . ( $this->rcMoveIndex++ )] = array( $cacheEntry );
        } else {
            # Logs are grouped by type
            if ( $type == RC_LOG ) {
                $secureName = SpecialPage::getTitleFor(
                    'Log',
                    $cacheEntry->mAttribs['rc_log_type']
                )->getPrefixedDBkey();
            }
            if ( !isset( $this->rc_cache[$secureName] ) ) {
                $this->rc_cache[$secureName] = array();
            }
 
            array_push( $this->rc_cache[$secureName], $cacheEntry );
        }
    }
 
    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;
        $oldid = '';
        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 ) {
                // @todo FIXME: Hardcoded '×'. Should be a message.
                $formattedCount = $this->getLanguage()->formatNum( $count ) . '×';
                $text .= ' ' . $this->msg( 'parentheses' )->rawParams( $formattedCount )->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 = '';
        $block0 = $block[0];
        if ( !$allLogs ) {
            if ( !ChangesList::userCan( $rcObj, Revision::DELETED_TEXT, $this->getUser() ) ) {
                $logtext .= $nchanges[$n];
            } elseif ( $isnew ) {
                $logtext .= $nchanges[$n];
            } else {
                $logtext .= Linker::link(
                    $block0->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(
                        $block0->getTitle(),
                        $sinceLastVisitMsg[$sinceLast],
                        array(),
                        $queryParams + array(
                            'diff' => $currentRevision,
                            'oldid' => $unvisitedOldid,
                        ),
                        array( 'known', 'noclasses' )
                    );
                }
            }
        }
 
        # History
        if ( $allLogs ) {
            // don't show history link for logs
        } elseif ( $namehidden || !$block0->getTitle()->exists() ) {
            $logtext .= $this->message['pipe-separator'] . $this->message['enhancedrc-history'];
        } else {
            $params = $queryParams;
            $params['action'] = 'history';
 
            $logtext .= $this->message['pipe-separator'] .
                Linker::linkKnown(
                    $block0->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( $block0->numberofWatchingusers );
        $r .= '</td></tr>';
 
        # 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() . '</div>';
    }
}