Add built-in TreeView checkbox mode#5429

Merged

tig merged 11 commits into

copilot/add-built-in-checkbox-mode-for-treeview

May 28, 2026

Commits on May 28, 2026

Initial plan

Copilot
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tig
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Add TreeView checkbox mode

Copilot
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tig
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Clean TreeView checkbox state removal

Copilot
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tig
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Add CheckboxMode to ITreeView and TreeViewEditor UICatalog scenario

tig
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Copilot
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Fix mouse click handling in TreeView OnActivated

tig
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Copilot
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Fix TreeView mouse click double-fire causing checkbox/expand to not work

tig
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Copilot
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Add tri-state checkbox with parent-child propagation

tig
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Copilot
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Document CheckboxMode in treeview.md and tableview.md

tig
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Copilot
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Address CR feedback: perf, safety, correctness fixes

tig
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Copilot
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Fix parent uncheck when children are checked and revert emoji glyphs

tig
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Copilot
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Fix collapsed parent showing wrong checkstate

tig
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Copilot
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