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                 # Display permissions errors before read-only message -- there's no
  75                 # point in misleading the user into thinking the inability to rollback
  76                 # is only temporary.
  77                 if ( !empty( $result ) && $result !== array( array( 'readonlytext' ) ) ) {
  78                         # array_diff is completely broken for arrays of arrays, sigh.
  79                         # Remove any 'readonlytext' error manually.
  80                         $out = array();
  81                         foreach ( $result as $error ) {
  82                                 if ( $error != array( 'readonlytext' ) ) {
  83                                         $out [] = $error;
  84                                 }
  85                         }
  86                         throw new PermissionsError( 'rollback', $out );
  87                 }
  88
  89                 if ( $result == array( array( 'readonlytext' ) ) ) {
  90                         throw new ReadOnlyError;
  91                 }
  92
  93                 $current = $details['current'];
  94                 $target = $details['target'];
  95                 $newId = $details['newid'];
  96                 $this->getOutput()->setPageTitle( $this->msg( 'actioncomplete' ) );
  97                 $this->getOutput()->setRobotPolicy( 'noindex,nofollow' );
  98
  99                 if ( $current->getUserText() === '' ) {
 100                         $old = $this->msg( 'rev-deleted-user' )->escaped();
 101                 } else {
 102                         $old = Linker::userLink( $current->getUser(), $current->getUserText() )
 103                                 . Linker::userToolLinks( $current->getUser(), $current->getUserText() );
 104                 }
 105
 106                 $new = Linker::userLink( $target->getUser(), $target->getUserText() )
 107                         . Linker::userToolLinks( $target->getUser(), $target->getUserText() );
 108                 $this->getOutput()->addHTML( $this->msg( 'rollback-success' )->rawParams( $old, $new )->parseAsBlock() );
 109                 $this->getOutput()->returnToMain( false, $this->getTitle() );
 110
 111                 if ( !$request->getBool( 'hidediff', false ) && !$this->getUser()->getBoolOption( 'norollbackdiff', false ) ) {
 112                         $de = new DifferenceEngine( $this->getContext(), $current->getId(), $newId, false, true );
 113                         $de->showDiff( '', '' );
 114                 }
 115         }
 116
 117         protected function getDescription() {
 118                 return '';
 119         }
 120 }