A11yExpanded returns true if the dropdown menu is currently visible.

Maps to the aria-expanded attribute.

func (w *Widget) A11yExpanded() bool {
	return w.open
}

A11yLabel returns the accessible label for the dropdown.

It uses the configured accessibility hint if set, or falls back to

"dropdown" as a generic label.

func (w *Widget) A11yLabel() string {
	if w.cfg.a11yHint != "" {
		return w.cfg.a11yHint
	}
	return "dropdown"
}

A11yRole returns the ARIA role for the dropdown widget.

Returns "combobox" per WAI-ARIA 1.2 spec for dropdown/select controls.

func (w *Widget) A11yRole() string {
	return "combobox"
}

A11yValue returns the currently displayed value for assistive technology.

If no item is selected, it returns the placeholder text.

func (w *Widget) A11yValue() string {
	if w.selectedIndex >= 0 && w.selectedIndex < len(w.cfg.items) {
		return w.cfg.items[w.selectedIndex].DisplayText()
	}
	if w.cfg.placeholder != "" {
		return w.cfg.placeholder
	}
	return ""
}