+ $this->showEditUserGroupsForm( $username, $user->getGroups() );
+ $this->showLogFragment( $user, $wgOut );
+ }
+
+ /**
+ * Go through used and available groups and return the ones that this
+ * form will be able to manipulate based on the current user's system
+ * permissions.
+ *
+ * @param $groups Array: list of groups the given user is in
+ * @return Array: Tuple of addable, then removable groups
+ */
+ protected function splitGroups( $groups ) {
+ list($addable, $removable) = array_values( $this->changeableGroups() );
+ $removable = array_intersect($removable, $groups ); // Can't remove groups the user doesn't have
+ $addable = array_diff( $addable, $groups ); // Can't add groups the user does have
+
+ return array( $addable, $removable );
+ }
+
+ /**
+ * Show the form to edit group memberships.
+ *
+ * @todo make all CSS-y and semantic
+ * @param $username String: Name of user you're editing
+ * @param $groups Array: Array of groups the user is in
+ */
+ protected function showEditUserGroupsForm( $username, $groups ) {
+ global $wgOut, $wgUser;
+
+ list( $addable, $removable ) = $this->splitGroups( $groups );
+
+ $wgOut->addHTML(
+ Xml::openElement( 'form', array( 'method' => 'post', 'action' => $this->action, 'name' => 'editGroup' ) ) .
+ Xml::hidden( 'user-editname', $username ) .
+ Xml::hidden( 'wpEditToken', $wgUser->editToken( $username ) ) .
+ Xml::openElement( 'fieldset' ) .
+ Xml::element( 'legend', array(), wfMsg( 'userrights-editusergroup' ) ) .
+ $wgOut->parse( wfMsg( 'editinguser', $username ) ) .
+ $this->explainRights() .
+ "<table border='0'>
+ <tr>
+ <td></td>
+ <td>
+ <table width='400'>
+ <tr>
+ <td width='50%'>" . $this->removeSelect( $removable ) . "</td>
+ <td width='50%'>" . $this->addSelect( $addable ) . "</td>
+ </tr>
+ </table>
+ </tr>
+ <tr>
+ <td colspan='2'>" .
+ $wgOut->parse( wfMsg('userrights-groupshelp') ) .
+ "</td>
+ </tr>
+ <tr>
+ <td>" .
+ Xml::label( wfMsg( 'userrights-reason' ), 'wpReason' ) .
+ "</td>
+ <td>" .
+ Xml::input( 'user-reason', 60, false, array( 'id' => 'wpReason', 'maxlength' => 255 ) ) .
+ "</td>
+ </tr>
+ <tr>
+ <td></td>
+ <td>" .
+ Xml::submitButton( wfMsg( 'saveusergroups' ), array( 'name' => 'saveusergroups' ) ) .
+ "</td>
+ </tr>
+ </table>\n" .
+ Xml::closeElement( 'fieldset' ) .
+ Xml::closeElement( 'form' ) . "\n"
+ );
+ }
+
+ /**
+ * Prepare a list of groups the user is able to add and remove
+ *
+ * @return string
+ */
+ private function explainRights() {
+ global $wgUser, $wgLang;
+
+ $out = array();
+ list( $add, $remove ) = array_values( $this->changeableGroups() );
+
+ if( count( $add ) > 0 )
+ $out[] = wfMsgExt( 'userrights-available-add', 'parseinline', $wgLang->listToText( $add ) );
+ if( count( $remove ) > 0 )
+ $out[] = wfMsgExt( 'userrights-available-remove', 'parseinline', $wgLang->listToText( $remove ) );
+
+ return count( $out ) > 0
+ ? implode( ' ', $out )
+ : wfMsgExt( 'userrights-available-none', 'parseinline' );
+ }
+
+ /**
+ * Adds the <select> thingie where you can select what groups to remove
+ *
+ * @param array $groups The groups that can be removed
+ * @return string XHTML <select> element
+ */
+ private function removeSelect( $groups ) {
+ return $this->doSelect( $groups, 'member' );
+ }
+
+ /**
+ * Adds the <select> thingie where you can select what groups to add
+ *
+ * @param array $groups The groups that can be added
+ * @return string XHTML <select> element
+ */
+ private function addSelect( $groups ) {
+ return $this->doSelect( $groups, 'available' );
+ }
+
+ /**
+ * Adds the <select> thingie where you can select what groups to add/remove
+ *
+ * @param array $groups The groups that can be added/removed
+ * @param string $name 'member' or 'available'
+ * @return string XHTML <select> element
+ */
+ private function doSelect( $groups, $name ) {
+ $ret = wfMsgHtml( "{$this->mName}-groups$name" ) .
+ Xml::openElement( 'select', array(
+ 'name' => "{$name}[]",
+ 'multiple' => 'multiple',
+ 'size' => '6',
+ 'style' => 'width: 100%;'
+ )
+ );
+ foreach ($groups as $group) {
+ $ret .= Xml::element( 'option', array( 'value' => $group ), User::getGroupName( $group ) );
+ }
+ $ret .= Xml::closeElement( 'select' );
+ return $ret;
+ }
+
+ /**
+ * @param string $group The name of the group to check
+ * @return bool Can we remove the group?
+ */
+ private function canRemove( $group ) {
+ // $this->changeableGroups()['remove'] doesn't work, of course. Thanks,
+ // PHP.
+ $groups = $this->changeableGroups();
+ return in_array( $group, $groups['remove'] );
+ }
+
+ /**
+ * @param string $group The name of the group to check
+ * @return bool Can we add the group?
+ */
+ private function canAdd( $group ) {
+ $groups = $this->changeableGroups();
+ return in_array( $group, $groups['add'] );
+ }
+
+ /**
+ * Returns an array of the groups that the user can add/remove.
+ *
+ * @return Array array( 'add' => array( addablegroups ), 'remove' => array( removablegroups ) )
+ */
+ private function changeableGroups() {
+ global $wgUser;
+
+ $groups = array( 'add' => array(), 'remove' => array() );
+ $addergroups = $wgUser->getEffectiveGroups();
+
+ foreach ($addergroups as $addergroup) {
+ $groups = array_merge_recursive(
+ $groups, $this->changeableByGroup($addergroup)
+ );
+ $groups['add'] = array_unique( $groups['add'] );
+ $groups['remove'] = array_unique( $groups['remove'] );
+ }
+ return $groups;
+ }
+
+ /**
+ * Returns an array of the groups that a particular group can add/remove.
+ *
+ * @param String $group The group to check for whether it can add/remove
+ * @return Array array( 'add' => array( addablegroups ), 'remove' => array( removablegroups ) )
+ */
+ private function changeableByGroup( $group ) {
+ global $wgGroupPermissions, $wgAddGroups, $wgRemoveGroups;
+
+ if( empty($wgGroupPermissions[$group]['userrights']) ) {
+ // This group doesn't give the right to modify anything
+ return array( 'add' => array(), 'remove' => array() );
+ }
+ if( empty($wgAddGroups[$group]) and empty($wgRemoveGroups[$group]) ) {
+ // This group gives the right to modify everything (reverse-
+ // compatibility with old "userrights lets you change
+ // everything")
+ return array(
+ 'add' => User::getAllGroups(),
+ 'remove' => User::getAllGroups()
+ );
+ }
+
+ // Okay, it's not so simple, we have to go through the arrays
+ $groups = array( 'add' => array(), 'remove' => array() );
+ if( empty($wgAddGroups[$group]) ) {
+ // Don't add anything to $groups
+ } elseif( $wgAddGroups[$group] === true ) {
+ // You get everything
+ $groups['add'] = User::getAllGroups();
+ } elseif( is_array($wgAddGroups[$group]) ) {
+ $groups['add'] = $wgAddGroups[$group];
+ }
+
+ // Same thing for remove
+ if( empty($wgRemoveGroups[$group]) ) {
+ } elseif($wgRemoveGroups[$group] === true ) {
+ $groups['remove'] = User::getAllGroups();
+ } elseif( is_array($wgRemoveGroups[$group]) ) {
+ $groups['remove'] = $wgRemoveGroups[$group];
+ }
+ return $groups;
+ }
+
+ /**
+ * Show a rights log fragment for the specified user
+ *
+ * @param User $user User to show log for
+ * @param OutputPage $output OutputPage to use
+ */
+ protected function showLogFragment( $user, $output ) {
+ $viewer = new LogViewer(
+ new LogReader(
+ new FauxRequest(
+ array(
+ 'type' => 'rights',
+ 'page' => $user->getUserPage()->getPrefixedUrl(),
+ )
+ )
+ )
+ );
+ $output->addHtml( "<h2>" . htmlspecialchars( LogPage::logName( 'rights' ) ) . "</h2>\n" );
+ $viewer->showList( $output );
+ }
+
+}