Toolbar

ui.Toolbar creates a row of controls, as along the top of a window: buttons, toggles, toggle groups, segmented controls and menu buttons, which take no face of their own until hovered. ui.Spacer pushes those after it to the end.

ui.Toolbar(c, func() {
	ui.BackButton(c, app.router)
	ui.ForwardButton(c, app.router)
	ui.ToggleGroup(c, func() {
		ui.Toggle(c, &app.bold, "Bold")
		ui.Toggle(c, &app.italic, "Italic")
	})
	ui.Spacer(c)
	if ui.Button(c, "Share").Clicked() {
		app.share()
	}
}).Label("Format")

Keyboard

A toolbar is one stop of Tab: Left and Right move the focus among its controls, Home and End to the first and the last, and Tab goes on past it.

Overflow

Controls that do not fit go, from the last, into a menu at the toolbar's end, where choosing one clicks it, toggles a toggle, or opens a menu button's menu.

Accessibility

Assistive technology sees a toolbar, which Label names, holding its controls.