specialundelete.php

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			if( $newid ) {
				Article::onArticleCreate( $this->title );
			} else {
				Article::onArticleEdit( $this->title );
			}
		} else {
			# Something went terribly wrong!
		}

		# Now that it's safely stored, take it out of the archive
		$dbw->delete( 'archive',
			/* WHERE */ array(
				'ar_namespace' => $this->title->getNamespace(),
				'ar_title' => $this->title->getDBkey(),
				$oldones ),
			$fname );

		return $restored;
	}

}

/**
 *
 * @package MediaWiki
 * @subpackage SpecialPage
 */
class UndeleteForm {
	var $mAction, $mTarget, $mTimestamp, $mRestore, $mTargetObj;
	var $mTargetTimestamp, $mAllowed, $mComment;

	function UndeleteForm( &$request, $par = "" ) {
		global $wgUser;
		$this->mAction = $request->getText( 'action' );
		$this->mTarget = $request->getText( 'target' );
		$this->mTimestamp = $request->getText( 'timestamp' );
		$this->mFile = $request->getVal( 'file' );
		
		$posted = $request->wasPosted() &&
			$wgUser->matchEditToken( $request->getVal( 'wpEditToken' ) );
		$this->mRestore = $request->getCheck( 'restore' ) && $posted;
		$this->mPreview = $request->getCheck( 'preview' ) && $posted;
		$this->mComment = $request->getText( 'wpComment' );
		
		if( $par != "" ) {
			$this->mTarget = $par;
		}
		if ( $wgUser->isAllowed( 'delete' ) && !$wgUser->isBlocked() ) {
			$this->mAllowed = true;
		} else {
			$this->mAllowed = false;
			$this->mTimestamp = '';
			$this->mRestore = false;
		}
		if ( $this->mTarget !== "" ) {
			$this->mTargetObj = Title::newFromURL( $this->mTarget );
		} else {
			$this->mTargetObj = NULL;
		}
		if( $this->mRestore ) {
			$timestamps = array();
			$this->mFileVersions = array();
			foreach( $_REQUEST as $key => $val ) {
				if( preg_match( '/^ts(\d{14})$/', $key, $matches ) ) {
					array_push( $timestamps, $matches[1] );
				}
				
				if( preg_match( '/^fileid(\d+)$/', $key, $matches ) ) {
					$this->mFileVersions[] = intval( $matches[1] );
				}
			}
			rsort( $timestamps );
			$this->mTargetTimestamp = $timestamps;
		}
	}

	function execute() {

		if( is_null( $this->mTargetObj ) ) {
			return $this->showList();
		}
		if( $this->mTimestamp !== '' ) {
			return $this->showRevision( $this->mTimestamp );
		}
		if( $this->mFile !== null ) {
			return $this->showFile( $this->mFile );
		}
		if( $this->mRestore && $this->mAction == "submit" ) {
			return $this->undelete();
		}
		return $this->showHistory();
	}

	/* private */ function showList() {
		global $wgLang, $wgContLang, $wgUser, $wgOut;
		$fname = "UndeleteForm::showList";

		# List undeletable articles
		$result = PageArchive::listAllPages();

		if ( $this->mAllowed ) {
			$wgOut->setPagetitle( wfMsg( "undeletepage" ) );
		} else {
			$wgOut->setPagetitle( wfMsg( "viewdeletedpage" ) );
		}
		$wgOut->addWikiText( wfMsg( "undeletepagetext" ) );

		$sk = $wgUser->getSkin();
		$undelete =& Title::makeTitle( NS_SPECIAL, 'Undelete' );
		$wgOut->addHTML( "<ul>\n" );
		while( $row = $result->fetchObject() ) {
			$n = ($row->ar_namespace ?
				($wgContLang->getNsText( $row->ar_namespace ) . ":") : "").
				$row->ar_title;
			$link = $sk->makeKnownLinkObj( $undelete,
				htmlspecialchars( $n ), "target=" . urlencode( $n ) );
			$revisions = htmlspecialchars( wfMsg( "undeleterevisions",
				$wgLang->formatNum( $row->count ) ) );
			$wgOut->addHTML( "<li>$link ($revisions)</li>\n" );
		}
		$result->free();
		$wgOut->addHTML( "</ul>\n" );

		return true;
	}

	/* private */ function showRevision( $timestamp ) {
		global $wgLang, $wgUser, $wgOut;
		$fname = "UndeleteForm::showRevision";

		if(!preg_match("/[0-9]{14}/",$timestamp)) return 0;

		$archive =& new PageArchive( $this->mTargetObj );
		$text = $archive->getRevisionText( $timestamp );

		$wgOut->setPagetitle( wfMsg( "undeletepage" ) );
		$wgOut->addWikiText( "(" . wfMsg( "undeleterevision",
			$wgLang->date( $timestamp ) ) . ")\n" );
		
		if( $this->mPreview ) {
			$wgOut->addHtml( "<hr />\n" );
			$wgOut->addWikiText( $text );
		}
		
		$self = Title::makeTitle( NS_SPECIAL, "Undelete" );
		
		$wgOut->addHtml(
			wfElement( 'textarea', array(
					'readonly' => true,
					'cols' => intval( $wgUser->getOption( 'cols' ) ),
					'rows' => intval( $wgUser->getOption( 'rows' ) ) ),
				$text . "\n" ) .
			wfOpenElement( 'div' ) .
			wfOpenElement( 'form', array(
				'method' => 'post',
				'action' => $self->getLocalURL( "action=submit" ) ) ) .
			wfElement( 'input', array(
				'type' => 'hidden',
				'name' => 'target',
				'value' => $this->mTargetObj->getPrefixedDbKey() ) ) .
			wfElement( 'input', array(
				'type' => 'hidden',
				'name' => 'timestamp',
				'value' => $timestamp ) ) .
			wfElement( 'input', array(
				'type' => 'hidden',
				'name' => 'wpEditToken',
				'value' => $wgUser->editToken() ) ) .
			wfElement( 'input', array(
				'type' => 'hidden',
				'name' => 'preview',
				'value' => '1' ) ) .
			wfElement( 'input', array(
				'type' => 'submit',
				'value' => wfMsg( 'showpreview' ) ) ) .
			wfCloseElement( 'form' ) .
			wfCloseElement( 'div' ) );
	}
	
	/**
	 * Show a deleted file version requested by the visitor.
	 */
	function showFile( $key ) {
		global $wgOut;
		$wgOut->disable();
		
		$store = FileStore::get( 'deleted' );
		$store->stream( $key );
	}

	/* private */ function showHistory() {
		global $wgLang, $wgUser, $wgOut;

		$sk = $wgUser->getSkin();
		if ( $this->mAllowed ) {
			$wgOut->setPagetitle( wfMsg( "undeletepage" ) );
		} else {
			$wgOut->setPagetitle( wfMsg( 'viewdeletedpage' ) );
		}

		$archive = new PageArchive( $this->mTargetObj );
		$text = $archive->getLastRevisionText();
		/*
		if( is_null( $text ) ) {
			$wgOut->addWikiText( wfMsg( "nohistory" ) );
			return;
		}
		*/
		if ( $this->mAllowed ) {
			$wgOut->addWikiText( wfMsg( "undeletehistory" ) );
		} else {
			$wgOut->addWikiText( wfMsg( "undeletehistorynoadmin" ) );
		}

		# List all stored revisions
		$revisions = $archive->listRevisions();
		$files = $archive->listFiles();
		
		$haveRevisions = $revisions && $revisions->numRows() > 0;
		$haveFiles = $files && $files->numRows() > 0;
		
		# Batch existence check on user and talk pages
		if( $haveRevisions ) {
			$batch = new LinkBatch();
			while( $row = $revisions->fetchObject() ) {
				$batch->addObj( Title::makeTitleSafe( NS_USER, $row->ar_user_text ) );
				$batch->addObj( Title::makeTitleSafe( NS_USER_TALK, $row->ar_user_text ) );
			}
			$batch->execute();
			$revisions->seek( 0 );
		}
		if( $haveFiles ) {
			$batch = new LinkBatch();
			while( $row = $files->fetchObject() ) {
				$batch->addObj( Title::makeTitleSafe( NS_USER, $row->fa_user_text ) );
				$batch->addObj( Title::makeTitleSafe( NS_USER_TALK, $row->fa_user_text ) );
			}
			$batch->execute();
			$files->seek( 0 );
		}

		if ( $this->mAllowed ) {
			$titleObj = Title::makeTitle( NS_SPECIAL, "Undelete" );
			$action = $titleObj->getLocalURL( "action=submit" );
			# Start the form here
			$top = wfOpenElement( 'form', array( 'method' => 'post', 'action' => $action, 'id' => 'undelete' ) );
			$wgOut->addHtml( $top );
		}

		# Show relevant lines from the deletion log:
		$wgOut->addHTML( "<h2>" . htmlspecialchars( LogPage::logName( 'delete' ) ) . "</h2>\n" );
		require_once( 'SpecialLog.php' );
		$logViewer =& new LogViewer(
			new LogReader(
				new FauxRequest(
					array( 'page' => $this->mTargetObj->getPrefixedText(),
						   'type' => 'delete' ) ) ) );
		$logViewer->showList( $wgOut );
		
		if( $this->mAllowed && ( $haveRevisions || $haveFiles ) ) {
			# Format the user-visible controls (comment field, submission button)
			# in a nice little table
			$table = '<fieldset><table><tr>';
			$table .= '<td colspan="2">' . wfMsgWikiHtml( 'undeleteextrahelp' ) . '</td></tr><tr>';
			$table .= '<td align="right"><strong>' . wfMsgHtml( 'undeletecomment' ) . '</strong></td>';
			$table .= '<td>' . wfInput( 'wpComment', 50, $this->mComment ) . '</td>';
			$table .= '</tr><tr><td>&nbsp;</td><td>';
			$table .= wfSubmitButton( wfMsg( 'undeletebtn' ), array( 'name' => 'restore' ) );
			$table .= wfElement( 'input', array( 'type' => 'reset', 'value' => wfMsg( 'undeletereset' ) ) );
			$table .= '</td></tr></table></fieldset>';
			$wgOut->addHtml( $table );
		}
	
		$wgOut->addHTML( "<h2>" . htmlspecialchars( wfMsg( "history" ) ) . "</h2>\n" );
		
		if( $haveRevisions ) {
			# The page's stored (deleted) history:
			$wgOut->addHTML("<ul>");
			$target = urlencode( $this->mTarget );
			while( $row = $revisions->fetchObject() ) {
				$ts = wfTimestamp( TS_MW, $row->ar_timestamp );
				if ( $this->mAllowed ) {
					$checkBox = wfCheck( "ts$ts" );
					$pageLink = $sk->makeKnownLinkObj( $titleObj,
						$wgLang->timeanddate( $ts, true ),
						"target=$target&timestamp=$ts" );
				} else {
					$checkBox = '';
					$pageLink = $wgLang->timeanddate( $ts, true );
				}
				$userLink = $sk->userLink( $row->ar_user, $row->ar_user_text ) . $sk->userToolLinks( $row->ar_user, $row->ar_user_text );
				$comment = $sk->commentBlock( $row->ar_comment );
				$wgOut->addHTML( "<li>$checkBox $pageLink . . $userLink $comment</li>\n" );
	
			}
			$revisions->free();
			$wgOut->addHTML("</ul>");
		} else {
			$wgOut->addWikiText( wfMsg( "nohistory" ) );
		}

		
		if( $haveFiles ) {
			$wgOut->addHtml( "<h2>" . wfMsgHtml( 'imghistory' ) . "</h2>\n" );
			$wgOut->addHtml( "<ul>" );
			while( $row = $files->fetchObject() ) {
				$ts = wfTimestamp( TS_MW, $row->fa_timestamp );
				if ( $this->mAllowed && $row->fa_storage_key ) {
					$checkBox = wfCheck( "fileid" . $row->fa_id );
					$key = urlencode( $row->fa_storage_key );
					$target = urlencode( $this->mTarget );
					$pageLink = $sk->makeKnownLinkObj( $titleObj,
						$wgLang->timeanddate( $ts, true ),
						"target=$target&file=$key" );
				} else {
					$checkBox = '';
					$pageLink = $wgLang->timeanddate( $ts, true );
				}
 				$userLink = $sk->userLink( $row->fa_user, $row->fa_user_text ) . $sk->userToolLinks( $row->fa_user, $row->fa_user_text );
				$data =
					wfMsgHtml( 'widthheight',
						$wgLang->formatNum( $row->fa_width ),
						$wgLang->formatNum( $row->fa_height ) ) .
					' (' .
					wfMsgHtml( 'nbytes', $wgLang->formatNum( $row->fa_size ) ) .
					')';
				$comment = $sk->commentBlock( $row->fa_description );
				$wgOut->addHTML( "<li>$checkBox $pageLink . . $userLink $data $comment</li>\n" );
			}
			$files->free();
			$wgOut->addHTML( "</ul>" );
		}
		
		if ( $this->mAllowed ) {
			# Slip in the hidden controls here
			$misc  = wfHidden( 'target', $this->mTarget );
			$misc .= wfHidden( 'wpEditToken', $wgUser->editToken() );
			$wgOut->addHtml( $misc . '</form>' );
		}

		return true;
	}

	function undelete() {
		global $wgOut, $wgUser;
		if( !is_null( $this->mTargetObj ) ) {
			$archive = new PageArchive( $this->mTargetObj );
			$ok = true;
			
			$ok = $archive->undelete(
				$this->mTargetTimestamp,
				$this->mComment,
				$this->mFileVersions );
			
			if( $ok ) {
				$skin =& $wgUser->getSkin();
				$link = $skin->makeKnownLinkObj( $this->mTargetObj );
				$wgOut->addHtml( wfMsgWikiHtml( 'undeletedpage', $link ) );
				return true;
			}
		}
		$wgOut->showFatalError( wfMsg( "cannotundelete" ) );
		return false;
	}
}

?>