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Votes
0
Found in [Package]
1.0.0-preview.14
Issue ID
1316122
Regression
No
[UI Toolkit] FocusEvent is never called when using RegisterCallback on UI Document rootVisualElement
How to reproduce:
1. Open the attached project's Scene labeled "SampleScene"
2. Enter the Play Mode
3. In the Game View, select a random Button
4. Select another Button
5. Inspect the Console Window
Expected result: FocusEvent is called when Button is pressed
Actual result: FocusEvent is not called
Reproducible with: 1.0.0-preview.14 (2020.2.7f1, 2021.1.0b9, 2021.2.0a3)
Couldn't test with: 2018.4.32f1, 2019.4.21f1 (UI Toolkit is not available), 2021.2.0a4, 2021.2.0a7 (Unresolvable internal package errors)
Note: Although FocusEvent is not called, FocusInEvent and FocusOutEvent are called
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Resolution Note:
The FocusEvent type trickles down and does not bubble up, so you can only get it by adding a callback to the target element itself (in the provided example, the buttons); FocusInEvent and FocusDown both trickle down and bubble up, which is why the rootVisualElement gets a called for it in the provided example.
Documentation for the event types:
- https://docs.unity3d.com/ScriptReference/UIElements.FocusEvent.html
- https://docs.unity3d.com/ScriptReference/UIElements.FocusInEvent.html
- https://docs.unity3d.com/ScriptReference/UIElements.FocusOutEvent.html
For support with UI Toolkit we suggest coming to our Forum: https://forum.unity.com/forums/ui-toolkit.178/