Make sure a folder is not inserted twice in tree

ViennaRSS · Aug 7, 2024 · a4c8c8f · a4c8c8f
1 parent 0fbc341
commit a4c8c8f
Showing 1 changed file with 4 additions and 0 deletions.
diff --git a/Vienna/Sources/Main window/FoldersTree.m b/Vienna/Sources/Main window/FoldersTree.m
@@ -255,6 +255,10 @@ -(BOOL)loadTree:(NSArray *)listOfFolders rootNode:(TreeNode *)node
 		NSInteger nextChildId = (node == self.rootNode) ? [Database sharedManager].firstFolderId : node.folder.firstChildId;
 		NSInteger predecessorId = 0;
 		while (nextChildId > 0) {
+			if ([self.rootNode nodeFromID:nextChildId] != nil) { // already present in our tree ?
+				NSLog(@"Duplicate child with id %ld asked under folder with id %ld", (long)nextChildId, (long)node.nodeId);
+				return NO;
+			}
 			NSUInteger  listIndex = [listOfFolderIds indexOfObject:@(nextChildId)];
 			if (listIndex == NSNotFound) {
 				NSLog(@"Cannot find child with id %ld for folder with id %ld", (long)nextChildId, (long)node.nodeId);