// Number picker uses the gxui.DefaultAdapter for driving a list func numberPicker(theme gxui.Theme, overlay gxui.BubbleOverlay) gxui.Control { items := []string{ "zero", "one", "two", "three", "four", "five", "six", "seven", "eight", "nine", "ten", "eleven", "twelve", "thirteen", "fourteen", "fifteen", "sixteen", "seventeen", "eighteen", "nineteen", "twenty", } adapter := gxui.CreateDefaultAdapter() adapter.SetItems(items) layout := theme.CreateLinearLayout() layout.SetDirection(gxui.TopToBottom) label0 := theme.CreateLabel() label0.SetText("Numbers:") layout.AddChild(label0) dropList := theme.CreateDropDownList() dropList.SetAdapter(adapter) dropList.SetBubbleOverlay(overlay) layout.AddChild(dropList) list := theme.CreateList() list.SetAdapter(adapter) list.SetOrientation(gxui.Vertical) layout.AddChild(list) label1 := theme.CreateLabel() label1.SetMargin(math.Spacing{T: 30}) label1.SetText("Selected number:") layout.AddChild(label1) selected := theme.CreateLabel() layout.AddChild(selected) dropList.OnSelectionChanged(func(item gxui.AdapterItem) { if list.Selected() != item { list.Select(item) } }) list.OnSelectionChanged(func(item gxui.AdapterItem) { if dropList.Selected() != item { dropList.Select(item) } selected.SetText(fmt.Sprintf("%s - %d", item, adapter.ItemIndex(item))) }) return layout }