+
+ protected function getThumbForLine( $file ) {
+ global $wgLang;
+
+ if ( $file->allowInlineDisplay() && $file->userCan( File::DELETED_FILE ) && !$file->isDeleted( File::DELETED_FILE ) ) {
+ $params = array(
+ 'width' => '120',
+ 'height' => '120',
+ );
+ $timestamp = wfTimestamp( TS_MW, $file->getTimestamp() );
+
+ $thumbnail = $file->transform( $params );
+ $options = array(
+ 'alt' => wfMsg( 'filehist-thumbtext',
+ $wgLang->timeAndDate( $timestamp, true ),
+ $wgLang->date( $timestamp, true ),
+ $wgLang->time( $timestamp, true ) ),
+ 'file-link' => true,
+ );
+
+ if ( !$thumbnail ) return wfMsgHtml( 'filehist-nothumb' );
+
+ return $thumbnail->toHtml( $options );
+ } else {
+ return wfMsgHtml( 'filehist-nothumb' );
+ }
+ }
+}
+
+class ImageHistoryPseudoPager extends ReverseChronologicalPager {
+ function __construct( $imagePage ) {
+ parent::__construct();
+ $this->mImagePage = $imagePage;
+ $this->mTitle = clone ( $imagePage->getTitle() );
+ $this->mTitle->setFragment( '#filehistory' );
+ $this->mImg = null;
+ $this->mHist = array();
+ $this->mRange = array( 0, 0 ); // display range
+ }
+
+ function getTitle() {
+ return $this->mTitle;
+ }
+
+ function getQueryInfo() {
+ return false;
+ }
+
+ function getIndexField() {
+ return '';
+ }
+
+ function formatRow( $row ) {
+ return '';
+ }
+
+ function getBody() {
+ $s = '';
+ $this->doQuery();
+ if ( count( $this->mHist ) ) {
+ $list = new ImageHistoryList( $this->mImagePage );
+ # Generate prev/next links
+ $navLink = $this->getNavigationBar();
+ $s = $list->beginImageHistoryList( $navLink );
+ // Skip rows there just for paging links
+ for ( $i = $this->mRange[0]; $i <= $this->mRange[1]; $i++ ) {
+ $file = $this->mHist[$i];
+ $s .= $list->imageHistoryLine( !$file->isOld(), $file );
+ }
+ $s .= $list->endImageHistoryList( $navLink );
+ }
+ return $s;
+ }
+
+ function doQuery() {
+ if ( $this->mQueryDone ) return;
+ $this->mImg = $this->mImagePage->getFile(); // ensure loading
+ if ( !$this->mImg->exists() ) {
+ return;
+ }
+ $queryLimit = $this->mLimit + 1; // limit plus extra row
+ if ( $this->mIsBackwards ) {
+ // Fetch the file history
+ $this->mHist = $this->mImg->getHistory( $queryLimit, null, $this->mOffset, false );
+ // The current rev may not meet the offset/limit
+ $numRows = count( $this->mHist );
+ if ( $numRows <= $this->mLimit && $this->mImg->getTimestamp() > $this->mOffset ) {
+ $this->mHist = array_merge( array( $this->mImg ), $this->mHist );
+ }
+ } else {
+ // The current rev may not meet the offset
+ if ( !$this->mOffset || $this->mImg->getTimestamp() < $this->mOffset ) {
+ $this->mHist[] = $this->mImg;
+ }
+ // Old image versions (fetch extra row for nav links)
+ $oiLimit = count( $this->mHist ) ? $this->mLimit : $this->mLimit + 1;
+ // Fetch the file history
+ $this->mHist = array_merge( $this->mHist,
+ $this->mImg->getHistory( $oiLimit, $this->mOffset, null, false ) );
+ }
+ $numRows = count( $this->mHist ); // Total number of query results
+ if ( $numRows ) {
+ # Index value of top item in the list
+ $firstIndex = $this->mIsBackwards ?
+ $this->mHist[$numRows - 1]->getTimestamp() : $this->mHist[0]->getTimestamp();
+ # Discard the extra result row if there is one
+ if ( $numRows > $this->mLimit && $numRows > 1 ) {
+ if ( $this->mIsBackwards ) {
+ # Index value of item past the index
+ $this->mPastTheEndIndex = $this->mHist[0]->getTimestamp();
+ # Index value of bottom item in the list
+ $lastIndex = $this->mHist[1]->getTimestamp();
+ # Display range
+ $this->mRange = array( 1, $numRows - 1 );
+ } else {
+ # Index value of item past the index
+ $this->mPastTheEndIndex = $this->mHist[$numRows - 1]->getTimestamp();
+ # Index value of bottom item in the list
+ $lastIndex = $this->mHist[$numRows - 2]->getTimestamp();
+ # Display range
+ $this->mRange = array( 0, $numRows - 2 );
+ }
+ } else {
+ # Setting indexes to an empty string means that they will be
+ # omitted if they would otherwise appear in URLs. It just so
+ # happens that this is the right thing to do in the standard
+ # UI, in all the relevant cases.
+ $this->mPastTheEndIndex = '';
+ # Index value of bottom item in the list
+ $lastIndex = $this->mIsBackwards ?
+ $this->mHist[0]->getTimestamp() : $this->mHist[$numRows - 1]->getTimestamp();
+ # Display range
+ $this->mRange = array( 0, $numRows - 1 );
+ }
+ } else {
+ $firstIndex = '';
+ $lastIndex = '';
+ $this->mPastTheEndIndex = '';
+ }
+ if ( $this->mIsBackwards ) {
+ $this->mIsFirst = ( $numRows < $queryLimit );
+ $this->mIsLast = ( $this->mOffset == '' );
+ $this->mLastShown = $firstIndex;
+ $this->mFirstShown = $lastIndex;
+ } else {
+ $this->mIsFirst = ( $this->mOffset == '' );
+ $this->mIsLast = ( $numRows < $queryLimit );
+ $this->mLastShown = $lastIndex;
+ $this->mFirstShown = $firstIndex;
+ }
+ $this->mQueryDone = true;
+ }