includes/actions/RollbackAction.php

   1 <?php
   2 /**
   3  * Edit rollback user interface
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program; if not, write to the Free Software
  17  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
  18  *
  19  * @file
  20  * @ingroup Actions
  21  */
  22
  23 /**
  24  * User interface for the rollback action
  25  *
  26  * @ingroup Actions
  27  */
  28 class RollbackAction extends FormlessAction {
  29
  30         public function getName() {
  31                 return 'rollback';
  32         }
  33
  34         public function getRestriction() {
  35                 return 'rollback';
  36         }
  37
  38         public function onView() {
  39                 $details = null;
  40
  41                 $request = $this->getRequest();
  42
  43                 $result = $this->page->doRollback(
  44                         $request->getVal( 'from' ),
  45                         $request->getText( 'summary' ),
  46                         $request->getVal( 'token' ),
  47                         $request->getBool( 'bot' ),
  48                         $details,
  49                         $this->getUser()
  50                 );
  51
  52                 if ( in_array( array( 'actionthrottledtext' ), $result ) ) {
  53                         throw new ThrottledError;
  54                 }
  55
  56                 if ( isset( $result[0][0] ) && ( $result[0][0] == 'alreadyrolled' || $result[0][0] == 'cantrollback' ) ) {
  57                         $this->getOutput()->setPageTitle( $this->msg( 'rollbackfailed' ) );
  58                         $errArray = $result[0];
  59                         $errMsg = array_shift( $errArray );
  60                         $this->getOutput()->addWikiMsgArray( $errMsg, $errArray );
  61
  62                         if ( isset( $details['current'] ) ) {
  63                                 $current = $details['current'];
  64
  65                                 if ( $current->getComment() != '' ) {
  66                                         $this->getOutput()->addHTML( $this->msg( 'editcomment' )->rawParams(
  67                                                 Linker::formatComment( $current->getComment() ) )->parse() );
  68                                 }
  69                         }
  70
  71                         return;
  72                 }
  73
  74                 #NOTE: Permission errors already handled by Action::checkExecute.
  75
  76                 if ( $result == array( array( 'readonlytext' ) ) ) {
  77                         throw new ReadOnlyError;
  78                 }
  79
  80                 #XXX: Would be nice if ErrorPageError could take multiple errors, and/or a status object.
  81                 #     Right now, we only show the first error
  82                 foreach ( $result as $error ) {
  83                         throw new ErrorPageError( 'rollbackfailed', $error[0], array_slice( $error, 1 ) );
  84                 }
  85
  86                 $current = $details['current'];
  87                 $target = $details['target'];
  88                 $newId = $details['newid'];
  89                 $this->getOutput()->setPageTitle( $this->msg( 'actioncomplete' ) );
  90                 $this->getOutput()->setRobotPolicy( 'noindex,nofollow' );
  91
  92                 $old = Linker::revUserTools( $current );
  93                 $new = Linker::revUserTools( $target );
  94                 $this->getOutput()->addHTML( $this->msg( 'rollback-success' )->rawParams( $old, $new )->parseAsBlock() );
  95                 $this->getOutput()->returnToMain( false, $this->getTitle() );
  96
  97                 if ( !$request->getBool( 'hidediff', false ) && !$this->getUser()->getBoolOption( 'norollbackdiff', false ) ) {
  98                         $contentHandler = $current->getContentHandler();
  99                         $de = $contentHandler->createDifferenceEngine( $this->getContext(), $current->getId(), $newId, false, true );
 100                         $de->showDiff( '', '' );
 101                 }
 102         }
 103
 104         protected function getDescription() {
 105                 return '';
 106         }
 107 }