--- /dev/null
+<?php
+/**
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ * http://www.gnu.org/copyleft/gpl.html
+ *
+ * @file
+ */
+
+class ImageHistoryPseudoPager extends ReverseChronologicalPager {
+ protected $preventClickjacking = false;
+
+ /**
+ * @var File
+ */
+ protected $mImg;
+
+ /**
+ * @var Title
+ */
+ protected $mTitle;
+
+ /**
+ * @since 1.14
+ * @var ImagePage
+ */
+ public $mImagePage;
+
+ /**
+ * @since 1.14
+ * @var File[]
+ */
+ public $mHist;
+
+ /**
+ * @since 1.14
+ * @var int[]
+ */
+ public $mRange;
+
+ /**
+ * @param ImagePage $imagePage
+ */
+ public function __construct( $imagePage ) {
+ parent::__construct( $imagePage->getContext() );
+ $this->mImagePage = $imagePage;
+ $this->mTitle = $imagePage->getTitle()->createFragmentTarget( 'filehistory' );
+ $this->mImg = null;
+ $this->mHist = [];
+ $this->mRange = [ 0, 0 ]; // display range
+
+ // Only display 10 revisions at once by default, otherwise the list is overwhelming
+ $this->mLimitsShown = array_merge( [ 10 ], $this->mLimitsShown );
+ $this->mDefaultLimit = 10;
+ list( $this->mLimit, /* $offset */ ) =
+ $this->mRequest->getLimitOffset( $this->mDefaultLimit, '' );
+ }
+
+ /**
+ * @return Title
+ */
+ public function getTitle() {
+ return $this->mTitle;
+ }
+
+ public function getQueryInfo() {
+ return false;
+ }
+
+ /**
+ * @return string
+ */
+ public function getIndexField() {
+ return '';
+ }
+
+ /**
+ * @param object $row
+ * @return string
+ */
+ public function formatRow( $row ) {
+ return '';
+ }
+
+ /**
+ * @return string
+ */
+ public function getBody() {
+ $s = '';
+ $this->doQuery();
+ if ( count( $this->mHist ) ) {
+ if ( $this->mImg->isLocal() ) {
+ // Do a batch existence check for user pages and talkpages
+ $linkBatch = new LinkBatch();
+ for ( $i = $this->mRange[0]; $i <= $this->mRange[1]; $i++ ) {
+ $file = $this->mHist[$i];
+ $user = $file->getUser( 'text' );
+ $linkBatch->add( NS_USER, $user );
+ $linkBatch->add( NS_USER_TALK, $user );
+ }
+ $linkBatch->execute();
+ }
+
+ $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 );
+
+ if ( $list->getPreventClickjacking() ) {
+ $this->preventClickjacking();
+ }
+ }
+ return $s;
+ }
+
+ public function doQuery() {
+ if ( $this->mQueryDone ) {
+ return;
+ }
+ $this->mImg = $this->mImagePage->getPage()->getFile(); // ensure loading
+ if ( !$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( [ $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 = [ 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 = [ 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 = [ 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;
+ }
+
+ /**
+ * @param bool $enable
+ */
+ protected function preventClickjacking( $enable = true ) {
+ $this->preventClickjacking = $enable;
+ }
+
+ /**
+ * @return bool
+ */
+ public function getPreventClickjacking() {
+ return $this->preventClickjacking;
+ }
+
+}
scripts.mit.edu / autoinstallsdev / mediawiki.git / blobdiff