fix(ui): stop ClearCompletedAsync from mutating chain-display fields

ClassifyItems() layers ApplyChainGrouping on top of partitioning, which
writes ShowAsChainMember/ChainStep/ChainAfterLabel on every row.
ClearCompletedAsync only needed the completed-section count/rows, so it
got that mutation as an unwanted side effect of counting.

Split the pure overdue/open/completed partition into PartitionItems();
ClassifyItems() now composes it with the chain-grouping mutation for
Regroup's actual render path. ClearCompletedAsync uses PartitionItems
directly. Regroup's behavior is unchanged.
This commit is contained in:
mika kuns
2026-08-11 18:32:59 +02:00
parent d327a1007e
commit e55c84cda4
2 changed files with 173 additions and 5 deletions
@@ -529,10 +529,11 @@ public sealed partial class TasksIslandViewModel : ViewModelBase, IDisposable
}
// Builds the hierarchy-aware flat ordering (top-level rows interleaved with visible children,
// orphans flagged so they render flat) and classifies it into Overdue/Open/Completed, exactly
// as Regroup renders it. Shared with callers that need "every completed row" independent of
// Rows/IsShowingCompleted (e.g. ClearCompletedAsync).
private (List<TaskRowViewModel> Overdue, List<TaskRowViewModel> Open, List<TaskRowViewModel> Completed) ClassifyItems()
// orphans flagged so they render flat) and partitions it into Overdue/Open/Completed. Pure
// with respect to chain state (ShowAsChainMember/ChainStep/ChainAfterLabel) — callers that
// only need section membership/counts (e.g. ClearCompletedAsync) should use this directly
// rather than ClassifyItems, which additionally mutates every row via ApplyChainGrouping.
private (List<TaskRowViewModel> Overdue, List<TaskRowViewModel> Open, List<TaskRowViewModel> Completed) PartitionItems()
{
// Items is already ordered by SortOrder from the DB query.
// Treat rows whose ParentTaskId is not in the current view as orphans -> top-level.
@@ -580,6 +581,17 @@ public sealed partial class TasksIslandViewModel : ViewModelBase, IDisposable
open.Add(r);
}
return (overdue, open, completed);
}
// ClassifyItems layers the chain-grouping mutation on top of PartitionItems, exactly as
// Regroup renders it — every row in the result has ShowAsChainMember/ChainStep/ChainAfterLabel
// written. Only call this from a path that actually renders the result; a caller that just
// needs section membership (e.g. a count) should call PartitionItems instead.
private (List<TaskRowViewModel> Overdue, List<TaskRowViewModel> Open, List<TaskRowViewModel> Completed) ClassifyItems()
{
var (overdue, open, completed) = PartitionItems();
// Dependency chains are resolved and pulled together per section (not on the
// pre-split `flat` list): a chain head might land in a different section than its
// dependent (e.g. a Done head in Completed, an open dependent in Open) — in that case
@@ -965,7 +977,7 @@ public sealed partial class TasksIslandViewModel : ViewModelBase, IDisposable
[RelayCommand]
private async Task ClearCompletedAsync()
{
var (_, _, completed) = ClassifyItems();
var (_, _, completed) = PartitionItems();
if (completed.Count == 0) return;
// Delete children before parents so the parent-child FK (Restrict) doesn't