1 files changed, 122 insertions, 0 deletions
diff --git a/includes/actions/RollbackAction.php b/includes/actions/RollbackAction.php
new file mode 100644
index 00000000..9036ebf5
--- /dev/null
+++ b/includes/actions/RollbackAction.php
@@ -0,0 +1,122 @@
+<?php
+/**
+ * Edit rollback user interface
+ *
+ * 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
+ *
+ * @file
+ * @ingroup Action
+ */
+
+/**
+ * User interface for the rollback action
+ *
+ * @ingroup Action
+ */
+class RollbackAction extends FormlessAction {
+
+	public function getName() {
+		return 'rollback';
+	}
+
+	public function getRestriction() {
+		return 'rollback';
+	}
+
+	public function onView() {
+		$details = null;
+
+		$request = $this->getRequest();
+
+		$result = $this->page->doRollback(
+			$request->getVal( 'from' ),
+			$request->getText( 'summary' ),
+			$request->getVal( 'token' ),
+			$request->getBool( 'bot' ),
+			$details,
+			$this->getUser()
+		);
+
+		if ( in_array( array( 'actionthrottledtext' ), $result ) ) {
+			throw new ThrottledError;
+		}
+
+		if ( isset( $result[0][0] ) && ( $result[0][0] == 'alreadyrolled' || $result[0][0] == 'cantrollback' ) ) {
+			$this->getOutput()->setPageTitle( wfMsg( 'rollbackfailed' ) );
+			$errArray = $result[0];
+			$errMsg = array_shift( $errArray );
+			$this->getOutput()->addWikiMsgArray( $errMsg, $errArray );
+
+			if ( isset( $details['current'] ) ) {
+				$current = $details['current'];
+
+				if ( $current->getComment() != '' ) {
+					$this->getOutput()->addHTML( wfMessage( 'editcomment' )->rawParams(
+						Linker::formatComment( $current->getComment() ) )->parse() );
+				}
+			}
+
+			return;
+		}
+
+		# Display permissions errors before read-only message -- there's no
+		# point in misleading the user into thinking the inability to rollback
+		# is only temporary.
+		if ( !empty( $result ) && $result !== array( array( 'readonlytext' ) ) ) {
+			# array_diff is completely broken for arrays of arrays, sigh.
+			# Remove any 'readonlytext' error manually.
+			$out = array();
+			foreach ( $result as $error ) {
+				if ( $error != array( 'readonlytext' ) ) {
+					$out [] = $error;
+				}
+			}
+			$this->getOutput()->showPermissionsErrorPage( $out );
+
+			return;
+		}
+
+		if ( $result == array( array( 'readonlytext' ) ) ) {
+			throw new ReadOnlyError;
+		}
+
+		$current = $details['current'];
+		$target = $details['target'];
+		$newId = $details['newid'];
+		$this->getOutput()->setPageTitle( wfMsg( 'actioncomplete' ) );
+		$this->getOutput()->setRobotPolicy( 'noindex,nofollow' );
+
+		if ( $current->getUserText() === '' ) {
+			$old = wfMsg( 'rev-deleted-user' );
+		} else {
+			$old = Linker::userLink( $current->getUser(), $current->getUserText() )
+				. Linker::userToolLinks( $current->getUser(), $current->getUserText() );
+		}
+
+		$new = Linker::userLink( $target->getUser(), $target->getUserText() )
+			. Linker::userToolLinks( $target->getUser(), $target->getUserText() );
+		$this->getOutput()->addHTML( wfMsgExt( 'rollback-success', array( 'parse', 'replaceafter' ), $old, $new ) );
+		$this->getOutput()->returnToMain( false, $this->getTitle() );
+
+		if ( !$request->getBool( 'hidediff', false ) && !$this->getUser()->getBoolOption( 'norollbackdiff', false ) ) {
+			$de = new DifferenceEngine( $this->getTitle(), $current->getId(), $newId, false, true );
+			$de->showDiff( '', '' );
+		}
+	}
+
+	protected function getDescription() {
+		return '';
+	}
+}