TextTransformControl/TextDecorationControl: Balancing usability and accessibility #36735
Description
There has been some complications in finding the correct implementation for the TextTransformControl and TextDecorationControl components (e.g. #26060 #31623). It seems like the difficulty is in making the implementation semantically correct, while also being intuitively usable for sighted users.
Considered implementations
| Pros | Cons | |
|---|---|---|
| Radio (ToggleGroupControl) | Mutually exclusive | Cannot re-click to reset (or requires a separate "default" option) |
| Group of buttons | Can click to reset | Not mutually exclusive |
| Rely on ToolsPanel reset | Can use Radio | Not intuitive |
The options items are mutually exclusive, which makes them similar to a radio control. But we also want an intuitive way to reset the control, which is currently achieved by clicking the active item again. We can't implement this behavior onto a radio control because radio buttons are expected to be idempotent.
On the other hand, a mere array of buttons, even if role="group"ed, fails to semantically capture the mutual exclusivity of the options.