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No reaction on expanding/collapsing item #196

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ndikiy opened this issue Jul 25, 2023 · 1 comment · May be fixed by #214
Open

No reaction on expanding/collapsing item #196

ndikiy opened this issue Jul 25, 2023 · 1 comment · May be fixed by #214

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@ndikiy
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ndikiy commented Jul 25, 2023

I have found an issue related to refreshing tree when item is to be expanded or collapsed initiated from VM layer. Using your demo, particularly Drag/drop tab of your demo, I have added mouse double-click handler to the tree where I try to toggle corresponding item expanded state. So, this handler is working but there is no reaction on changing item expanded state at the View layer until I resized the window so that item goes out of the view and back to the view.

Video of how to reproduce is attached

2023-07-25_10h24_57.mp4
@ndikiy
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ndikiy commented Jul 25, 2023

Here is the code of mentioned handler:

        private void DragDrop_OnPointerPressed(object? sender, PointerPressedEventArgs e)
        {
            if (e.ClickCount != 2)
                return;

            var row = (e.Source as Control)?.FindAncestorOfType<TreeDataGridRow>();

            if (row?.DataContext is DragDropItem item)
                item.IsExpanded = !item.IsExpanded;
        }

@ndikiy ndikiy mentioned this issue Aug 21, 2023
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@ndikiy ndikiy linked a pull request Aug 30, 2023 that will close this issue
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@ndikiy