refactor menu widget, add menuitem struct

menus.go

@@ -58,8 +58,8 @@ func SortMenu() {
 
 	// set cursor position to current sort field
 	current := config.Get("sortField")
-	for n, field := range m.Items {
-		if field == current {
+	for n, item := range m.Items {
+		if item.Val == current {
 			m.CursorPos = n
 		}
 	}
@@ -67,7 +67,7 @@ func SortMenu() {
 	ui.Render(m)
 	m.NavigationHandlers()
 	ui.Handle("/sys/kbd/<enter>", func(ui.Event) {
-		config.Update("sortField", m.Items[m.CursorPos])
+		config.Update("sortField", m.Items[m.CursorPos].Val)
 		ui.StopLoop()
 	})
 	ui.Loop()

widgets/menu.go

@@ -6,39 +6,55 @@ import (
 
 type Padding [2]int // x,y padding
 
+type MenuItem struct {
+	Val  string
+	Text string
+}
+
 type Menu struct {
 	ui.Block
-	Items        []string
-	DisplayItems []string
-	TextFgColor  ui.Attribute
-	TextBgColor  ui.Attribute
-	Selectable   bool
-	CursorPos    int
-	padding      Padding
+	Items       []MenuItem
+	TextFgColor ui.Attribute
+	TextBgColor ui.Attribute
+	Selectable  bool
+	CursorPos   int
+	padding     Padding
 }
 
 func NewMenu(items []string) *Menu {
+	var mItems []MenuItem
+	for _, s := range items {
+		mItems = append(mItems, MenuItem{Val: s})
+	}
 	m := &Menu{
-		Block:        *ui.NewBlock(),
-		Items:        items,
-		DisplayItems: []string{},
-		TextFgColor:  ui.ThemeAttr("par.text.fg"),
-		TextBgColor:  ui.ThemeAttr("par.text.bg"),
-		Selectable:   false,
-		CursorPos:    0,
-		padding:      Padding{4, 2},
+		Block:       *ui.NewBlock(),
+		Items:       mItems,
+		TextFgColor: ui.ThemeAttr("par.text.fg"),
+		TextBgColor: ui.ThemeAttr("par.text.bg"),
+		Selectable:  false,
+		CursorPos:   0,
+		padding:     Padding{4, 2},
 	}
 	m.calcSize()
 	return m
 }
 
+func (m *Menu) SetItems(items []MenuItem) {
+	m.Items = items
+	m.calcSize()
+}
+
+func (m *Menu) SelectedItem() MenuItem {
+	return m.Items[m.CursorPos]
+}
+
 func (m *Menu) Buffer() ui.Buffer {
 	var cell ui.Cell
 	buf := m.Block.Buffer()
 
-	for n, item := range m.displayItems() {
+	for n, item := range m.Items {
 		x := m.padding[0]
-		for _, ch := range item {
+		for _, ch := range getDisplayText(item) {
 			// invert bg/fg colors on currently selected row
 			if m.Selectable && n == m.CursorPos {
 				cell = ui.Cell{Ch: ch, Fg: m.TextBgColor, Bg: m.TextFgColor}
@@ -74,20 +90,13 @@ func (m *Menu) NavigationHandlers() {
 	ui.Handle("/sys/kbd/q", func(ui.Event) { ui.StopLoop() })
 }
 
-// override display of items, if given
-func (m *Menu) displayItems() []string {
-	if len(m.DisplayItems) == len(m.Items) {
-		return m.DisplayItems
-	}
-	return m.Items
-}
-
 // Set width and height based on menu items
 func (m *Menu) calcSize() {
 	m.Width = 8 // minimum width
 
-	items := m.displayItems()
-	for _, s := range items {
+	items := m.Items
+	for _, i := range m.Items {
+		s := getDisplayText(i)
 		if len(s) > m.Width {
 			m.Width = len(s)
 		}
@@ -96,3 +105,11 @@ func (m *Menu) calcSize() {
 	m.Width += (m.padding[0] * 2)
 	m.Height = len(items) + (m.padding[1] * 2)
 }
+
+// override display text of item, if given
+func getDisplayText(m MenuItem) string {
+	if m.Text != "" {
+		return m.Text
+	}
+	return m.Val
+}