add optional subtext to menu widget

menus.go

@@ -199,6 +199,7 @@ func Confirm(txt string, fn func()) {
 	m := menu.NewMenu()
 	m.Selectable = true
 	m.BorderLabel = "Confirm"
+	m.SubText = txt
 
 	items := []menu.Item{
 		menu.Item{Val: "cancel", Label: "[c]ancel"},
@@ -210,27 +211,28 @@ func Confirm(txt string, fn func()) {
 	m.AddItems(items...)
 	ui.Render(m)
 
-	yes := func(ui.Event) {
+	yes := func() {
 		response = true
 		ui.StopLoop()
 	}
 
-	no := func(ui.Event) {
+	no := func() {
 		response = false
 		ui.StopLoop()
 	}
 
 	HandleKeys("up", m.Up)
 	HandleKeys("down", m.Down)
-	ui.Handle("/sys/kbd/c", no)
+	HandleKeys("exit", no)
-	ui.Handle("/sys/kbd/y", yes)
+	ui.Handle("/sys/kbd/c", func(ui.Event) { no() })
+	ui.Handle("/sys/kbd/y", func(ui.Event) { yes() })
 
-	ui.Handle("/sys/kbd/<enter>", func(e ui.Event) {
+	ui.Handle("/sys/kbd/<enter>", func(ui.Event) {
 		switch m.SelectedItem().Val {
 		case "cancel":
-			no(e)
+			no()
 		case "yes":
-			yes(e)
+			yes()
 		}
 	})
 

widgets/menu/main.go

@@ -11,6 +11,7 @@ type Padding [2]int // x,y padding
 type Menu struct {
 	ui.Block
 	SortItems   bool   // enable automatic sorting of menu items
+	SubText     string // optional text to display before items
 	TextFgColor ui.Attribute
 	TextBgColor ui.Attribute
 	Selectable  bool
@@ -82,9 +83,19 @@ func (m *Menu) Buffer() ui.Buffer {
 	var cell ui.Cell
 	buf := m.Block.Buffer()
 
+	y := m.Y + m.padding[1]
+
+	if m.SubText != "" {
+		x := m.X + m.padding[0]
+		for i, ch := range m.SubText {
+			cell = ui.Cell{Ch: ch, Fg: m.TextFgColor, Bg: m.TextBgColor}
+			buf.Set(x+i, y, cell)
+		}
+		y += 2
+	}
+
 	for n, item := range m.items {
 		x := m.X + m.padding[0]
-		y := m.Y + m.padding[1]
 		for _, ch := range item.Text() {
 			// invert bg/fg colors on currently selected row
 			if m.Selectable && n == m.cursorPos {
@@ -118,14 +129,22 @@ func (m *Menu) Down() {
 func (m *Menu) calcSize() {
 	m.Width = 7 // minimum width
 
-	items := m.items
+	var height int
 	for _, i := range m.items {
 		s := i.Text()
 		if len(s) > m.Width {
 			m.Width = len(s)
 		}
+		height++
+	}
+
+	if m.SubText != "" {
+		if len(m.SubText) > m.Width {
+			m.Width = len(m.SubText)
+		}
+		height += 2
 	}
 
 	m.Width += (m.padding[0] * 2)
-	m.Height = len(items) + (m.padding[1] * 2)
+	m.Height = height + (m.padding[1] * 2)
 }