Use case

The WAI-ARIA property aria-invalid must be available on all Flutter form input elements types/widgets when the value is computed to be invalid or out-of-range.

Proposal

Add the WAI-ARIA property aria-invalid to the list of semantics flags on the following element types/widgets. Its value is true when the entered value is invalid, and false when the entered value is valid.

• <input> (all types)
• application
• checkbox
• combobox
• gridecell
• listbox
• radiogroup
• slider
• spinbutton
• textbox
• tree