Gray out buttons for spaces user isn't admin for

assets/l10n/intl_en.arb

@@ -3970,5 +3970,8 @@
   "capacitySetTooLow": "Room capacity cannot be set below the current number of non-admins.",
   "roomCapacityExplanation": "Room capacity limits the number of non-admins allowed in a room.",
   "enterNumber": "Please enter a whole number value.",
-  "buildTranslation": "Build your translation from the choices above"
+  "buildTranslation": "Build your translation from the choices above",
+  "nonexistentSelection": "Selection no longer exists.",
+  "cantAddSpaceChild": "You do not have permission to add a child to this space.",
+  "roomAddedToSpace": "Room(s) have been added to the selected space."
 }

lib/pages/chat_list/chat_list.dart

@@ -797,6 +797,10 @@ class ChatListController extends State<ChatList>
   // Pangea#
 
   Future<void> addToSpace() async {
+    // #Pangea
+    final firstSelectedRoom =
+        Matrix.of(context).client.getRoomById(selectedRoomIds.toList().first);
+    // Pangea#
     final selectedSpace = await showConfirmationDialog<String>(
       context: context,
       title: L10n.of(context)!.addToSpace,
@@ -825,6 +829,12 @@ class ChatListController extends State<ChatList>
               // label: space
               //     .getLocalizedDisplayname(MatrixLocals(L10n.of(context)!)),
               label: space.nameIncludingParents(context),
+              textStyle: TextStyle(
+                color: (firstSelectedRoom == null ||
+                        (firstSelectedRoom.isSpace && !space.isRoomAdmin))
+                    ? Theme.of(context).colorScheme.outline
+                    : Theme.of(context).colorScheme.surfaceTint,
+              ),
               // Pangea#
             ),
           )
@@ -836,12 +846,19 @@ class ChatListController extends State<ChatList>
       future: () async {
         final space = Matrix.of(context).client.getRoomById(selectedSpace)!;
         // #Pangea
+        if (firstSelectedRoom == null) {
+          throw L10n.of(context)!.nonexistentSelection;
+        }
+        if (firstSelectedRoom.isSpace && !space.isRoomAdmin) {
+          throw L10n.of(context)!.cantAddSpaceChild;
+        }
         await pangeaAddToSpace(
           space,
           selectedRoomIds.toList(),
           context,
           pangeaController,
         );
+
         // if (space.canSendDefaultStates) {
         //   for (final roomId in selectedRoomIds) {
         //     await space.setSpaceChild(roomId);
@@ -854,7 +871,10 @@ class ChatListController extends State<ChatList>
       if (!mounted) return;
       ScaffoldMessenger.of(context).showSnackBar(
         SnackBar(
-          content: Text(L10n.of(context)!.chatHasBeenAddedToThisSpace),
+          // #Pangea
+          // content: Text(L10n.of(context)!.chatHasBeenAddedToThisSpace),
+          content: Text(L10n.of(context)!.roomAddedToSpace),
+          // Pangea#
         ),
       );
     }

lib/pangea/extensions/pangea_room_extension/children_and_parents_extension.dart

@@ -128,15 +128,13 @@ extension ChildrenAndParentsRoomExtension on Room {
     return childIds;
   }
 
-  // Checks if has permissions to add child to space
-  // And whether potential child space is ancestor of this
+  // Checks if has permissions to add child chat
+  // Or whether potential child space is ancestor of this
   bool _canAddAsParentOf(Room? child) {
     if (child == null || !child.isSpace) {
       return _canIAddSpaceChild(child);
     }
     if (id == child.id) return false;
-    return _isRoomAdmin &&
-        child._isRoomAdmin &&
-        !child._allSpaceChildRoomIds.contains(id);
+    return !child._allSpaceChildRoomIds.contains(id);
   }
 }

lib/pangea/widgets/class/add_space_toggles.dart

@@ -144,9 +144,13 @@ class AddToSpaceState extends State<AddToSpaceToggles> {
 
   Widget getAddToSpaceToggleItem(int index) {
     final Room possibleParent = possibleParents[index];
-    final bool canAdd = !(!possibleParent.isRoomAdmin &&
-            widget.mode == AddToClassMode.exchange) &&
-        possibleParent.canAddAsParentOf(room);
+    final bool canAdd = (room?.isSpace ?? false)
+        // Room is space
+        ? possibleParent.isRoomAdmin &&
+            room!.isRoomAdmin &&
+            possibleParent.canAddAsParentOf(room)
+        // Room is null or chat
+        : possibleParent.canAddAsParentOf(room);
 
     return Opacity(
       opacity: canAdd ? 1 : 0.5,