ImageHistoryList.php

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<?php
class ImageHistoryList extends ContextSource {

    protected $title;

    protected $img;

    protected $imagePage;

    protected $current;

    protected $repo, $showThumb;
    protected $preventClickjacking = false;

    public function __construct( $imagePage ) {
        global $wgShowArchiveThumbnails;
        $this->current = $imagePage->getPage()->getFile();
        $this->img = $imagePage->getDisplayedFile();
        $this->title = $imagePage->getTitle();
        $this->imagePage = $imagePage;
        $this->showThumb = $wgShowArchiveThumbnails && $this->img->canRender();
        $this->setContext( $imagePage->getContext() );
    }

    public function getImagePage() {
        return $this->imagePage;
    }

    public function getFile() {
        return $this->img;
    }

    public function beginImageHistoryList( $navLinks = '' ) {
        return Xml::element( 'h2', [ 'id' => 'filehistory' ], $this->msg( 'filehist' )->text() )
        . "\n"
        . "<div id=\"mw-imagepage-section-filehistory\">\n"
        . $this->msg( 'filehist-help' )->parseAsBlock()
        . $navLinks . "\n"
        . Xml::openElement( 'table', [ 'class' => 'wikitable filehistory' ] ) . "\n"
        . '<tr><th></th>'
        . ( $this->current->isLocal()
        && ( $this->getUser()->isAllowedAny( 'delete', 'deletedhistory' ) ) ? '<th></th>' : '' )
        . '<th>' . $this->msg( 'filehist-datetime' )->escaped() . '</th>'
        . ( $this->showThumb ? '<th>' . $this->msg( 'filehist-thumb' )->escaped() . '</th>' : '' )
        . '<th>' . $this->msg( 'filehist-dimensions' )->escaped() . '</th>'
        . '<th>' . $this->msg( 'filehist-user' )->escaped() . '</th>'
        . '<th>' . $this->msg( 'filehist-comment' )->escaped() . '</th>'
        . "</tr>\n";
    }

    public function endImageHistoryList( $navLinks = '' ) {
        return "</table>\n$navLinks\n</div>\n";
    }

    public function imageHistoryLine( $iscur, $file ) {
        global $wgContLang;

        $user = $this->getUser();
        $lang = $this->getLanguage();
        $timestamp = wfTimestamp( TS_MW, $file->getTimestamp() );
        $img = $iscur ? $file->getName() : $file->getArchiveName();
        $userId = $file->getUser( 'id' );
        $userText = $file->getUser( 'text' );
        $description = $file->getDescription( File::FOR_THIS_USER, $user );

        $local = $this->current->isLocal();
        $row = $selected = '';

        // Deletion link
        if ( $local && ( $user->isAllowedAny( 'delete', 'deletedhistory' ) ) ) {
            $row .= '<td>';
            # Link to remove from history
            if ( $user->isAllowed( 'delete' ) ) {
                $q = [ 'action' => 'delete' ];
                if ( !$iscur ) {
                    $q['oldimage'] = $img;
                }
                $row .= Linker::linkKnown(
                    $this->title,
                    $this->msg( $iscur ? 'filehist-deleteall' : 'filehist-deleteone' )->escaped(),
                    [], $q
                );
            }
            # Link to hide content. Don't show useless link to people who cannot hide revisions.
            $canHide = $user->isAllowed( 'deleterevision' );
            if ( $canHide || ( $user->isAllowed( 'deletedhistory' ) && $file->getVisibility() ) ) {
                if ( $user->isAllowed( 'delete' ) ) {
                    $row .= '<br />';
                }
                // If file is top revision or locked from this user, don't link
                if ( $iscur || !$file->userCan( File::DELETED_RESTRICTED, $user ) ) {
                    $del = Linker::revDeleteLinkDisabled( $canHide );
                } else {
                    list( $ts, ) = explode( '!', $img, 2 );
                    $query = [
                        'type' => 'oldimage',
                        'target' => $this->title->getPrefixedText(),
                        'ids' => $ts,
                    ];
                    $del = Linker::revDeleteLink( $query,
                        $file->isDeleted( File::DELETED_RESTRICTED ), $canHide );
                }
                $row .= $del;
            }
            $row .= '</td>';
        }

        // Reversion link/current indicator
        $row .= '<td>';
        if ( $iscur ) {
            $row .= $this->msg( 'filehist-current' )->escaped();
        } elseif ( $local && $this->title->quickUserCan( 'edit', $user )
            && $this->title->quickUserCan( 'upload', $user )
        ) {
            if ( $file->isDeleted( File::DELETED_FILE ) ) {
                $row .= $this->msg( 'filehist-revert' )->escaped();
            } else {
                $row .= Linker::linkKnown(
                    $this->title,
                    $this->msg( 'filehist-revert' )->escaped(),
                    [],
                    [
                        'action' => 'revert',
                        'oldimage' => $img,
                        'wpEditToken' => $user->getEditToken( $img )
                    ]
                );
            }
        }
        $row .= '</td>';

        // Date/time and image link
        if ( $file->getTimestamp() === $this->img->getTimestamp() ) {
            $selected = "class='filehistory-selected'";
        }
        $row .= "<td $selected style='white-space: nowrap;'>";
        if ( !$file->userCan( File::DELETED_FILE, $user ) ) {
            # Don't link to unviewable files
            $row .= '<span class="history-deleted">'
                . $lang->userTimeAndDate( $timestamp, $user ) . '</span>';
        } elseif ( $file->isDeleted( File::DELETED_FILE ) ) {
            if ( $local ) {
                $this->preventClickjacking();
                $revdel = SpecialPage::getTitleFor( 'Revisiondelete' );
                # Make a link to review the image
                $url = Linker::linkKnown(
                    $revdel,
                    $lang->userTimeAndDate( $timestamp, $user ),
                    [],
                    [
                        'target' => $this->title->getPrefixedText(),
                        'file' => $img,
                        'token' => $user->getEditToken( $img )
                    ]
                );
            } else {
                $url = $lang->userTimeAndDate( $timestamp, $user );
            }
            $row .= '<span class="history-deleted">' . $url . '</span>';
        } elseif ( !$file->exists() ) {
            $row .= '<span class="mw-file-missing">'
                . $lang->userTimeAndDate( $timestamp, $user ) . '</span>';
        } else {
            $url = $iscur ? $this->current->getUrl() : $this->current->getArchiveUrl( $img );
            $row .= Xml::element(
                'a',
                [ 'href' => $url ],
                $lang->userTimeAndDate( $timestamp, $user )
            );
        }
        $row .= "</td>";

        // Thumbnail
        if ( $this->showThumb ) {
            $row .= '<td>' . $this->getThumbForLine( $file ) . '</td>';
        }

        // Image dimensions + size
        $row .= '<td>';
        $row .= htmlspecialchars( $file->getDimensionsString() );
        $row .= $this->msg( 'word-separator' )->escaped();
        $row .= '<span style="white-space: nowrap;">';
        $row .= $this->msg( 'parentheses' )->sizeParams( $file->getSize() )->escaped();
        $row .= '</span>';
        $row .= '</td>';

        // Uploading user
        $row .= '<td>';
        // Hide deleted usernames
        if ( $file->isDeleted( File::DELETED_USER ) ) {
            $row .= '<span class="history-deleted">'
                . $this->msg( 'rev-deleted-user' )->escaped() . '</span>';
        } else {
            if ( $local ) {
                $row .= Linker::userLink( $userId, $userText );
                $row .= '<span style="white-space: nowrap;">';
                $row .= Linker::userToolLinks( $userId, $userText );
                $row .= '</span>';
            } else {
                $row .= htmlspecialchars( $userText );
            }
        }
        $row .= '</td>';

        // Don't show deleted descriptions
        if ( $file->isDeleted( File::DELETED_COMMENT ) ) {
            $row .= '<td><span class="history-deleted">' .
                $this->msg( 'rev-deleted-comment' )->escaped() . '</span></td>';
        } else {
            $row .= '<td dir="' . $wgContLang->getDir() . '">' .
                Linker::formatComment( $description, $this->title ) . '</td>';
        }

        $rowClass = null;
        Hooks::run( 'ImagePageFileHistoryLine', [ $this, $file, &$row, &$rowClass ] );
        $classAttr = $rowClass ? " class='$rowClass'" : '';

        return "<tr{$classAttr}>{$row}</tr>\n";
    }

    protected function getThumbForLine( $file ) {
        $lang = $this->getLanguage();
        $user = $this->getUser();
        if ( $file->allowInlineDisplay() && $file->userCan( File::DELETED_FILE, $user )
            && !$file->isDeleted( File::DELETED_FILE )
        ) {
            $params = [
                'width' => '120',
                'height' => '120',
            ];
            $timestamp = wfTimestamp( TS_MW, $file->getTimestamp() );

            $thumbnail = $file->transform( $params );
            $options = [
                'alt' => $this->msg( 'filehist-thumbtext',
                    $lang->userTimeAndDate( $timestamp, $user ),
                    $lang->userDate( $timestamp, $user ),
                    $lang->userTime( $timestamp, $user ) )->text(),
                'file-link' => true,
            ];

            if ( !$thumbnail ) {
                return $this->msg( 'filehist-nothumb' )->escaped();
            }

            return $thumbnail->toHtml( $options );
        } else {
            return $this->msg( 'filehist-nothumb' )->escaped();
        }
    }

    protected function preventClickjacking( $enable = true ) {
        $this->preventClickjacking = $enable;
    }

    public function getPreventClickjacking() {
        return $this->preventClickjacking;
    }
}