From 4bacd35fc44640208bb2f01ee68676a9701ba40a Mon Sep 17 00:00:00 2001
From: Ingo Schommer <me@chillu.com>
Date: Thu, 1 Jun 2017 21:37:48 +1200
Subject: [PATCH] List "view/edit all" groups in group permission field

See https://github.com/silverstripe/silverstripe-cms/issues/794
---
 code/Model/SiteTree.php | 34 ++++++++++++++++++++++++++++------
 1 file changed, 28 insertions(+), 6 deletions(-)

diff --git a/code/Model/SiteTree.php b/code/Model/SiteTree.php
index 7f220b43..c128d9ed 100755
--- a/code/Model/SiteTree.php
+++ b/code/Model/SiteTree.php
@@ -1926,12 +1926,18 @@ class SiteTree extends DataObject implements PermissionProvider, i18nEntityProvi
      */
     public function getSettingsFields()
     {
-        $groupsMap = array();
-        foreach (Group::get() as $group) {
-            // Listboxfield values are escaped, use ASCII char instead of &raquo;
-            $groupsMap[$group->ID] = $group->getBreadcrumbs(' > ');
-        }
-        asort($groupsMap);
+        $mapFn = function ($groups = []) {
+            $map = [];
+            foreach ($groups as $group) {
+                // Listboxfield values are escaped, use ASCII char instead of &raquo;
+                $map[$group->ID] = $group->getBreadcrumbs(' > ');
+            }
+            asort($map);
+            return $map;
+        };
+        $groupsMap = $mapFn(Group::get());
+        $viewAllGroupsMap = $mapFn(Permission::get_groups_by_permission(['SITETREE_VIEW_ALL', 'ADMIN']));
+        $editAllGroupsMap = $mapFn(Permission::get_groups_by_permission(['SITETREE_EDIT_ALL', 'ADMIN']));
 
         $fields = new FieldList(
             $rootTab = new TabSet(
@@ -2017,6 +2023,22 @@ class SiteTree extends DataObject implements PermissionProvider, i18nEntityProvi
         unset($editorsOptionsSource[InheritedPermissions::ANYONE]);
         $editorsOptionsField->setSource($editorsOptionsSource);
 
+        if ($viewAllGroupsMap) {
+            $viewerGroupsField->setDescription(_t(
+                'SilverStripe\\CMS\\Model\\SiteTree.VIEWER_GROUPS_FIELD_DESC',
+                'Groups with global view permissions: {groupList}',
+                ['groupList' => implode(', ', array_values($viewAllGroupsMap))]
+            ));
+        }
+
+        if ($editAllGroupsMap) {
+            $editorGroupsField->setDescription(_t(
+                'SilverStripe\\CMS\\Model\\SiteTree.EDITOR_GROUPS_FIELD_DESC',
+                'Groups with global edit permissions: {groupList}',
+                ['groupList' => implode(', ', array_values($editAllGroupsMap))]
+            ));
+        }
+
         if (!Permission::check('SITETREE_GRANT_ACCESS')) {
             $fields->makeFieldReadonly($viewersOptionsField);
             if ($this->CanEditType === InheritedPermissions::ONLY_THESE_USERS) {