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package main
import (
"fmt"
"io"
"os"
"strings"
"github.com/charmbracelet/bubbles/list"
tea "github.com/charmbracelet/bubbletea"
"github.com/charmbracelet/lipgloss"
)
const listHeight = 14
var (
titleStyle = lipgloss.NewStyle().MarginLeft(2)
itemStyle = lipgloss.NewStyle().PaddingLeft(4)
selectedItemStyle = lipgloss.NewStyle().PaddingLeft(2).Foreground(lipgloss.Color("170"))
paginationStyle = list.DefaultStyles().PaginationStyle.PaddingLeft(4)
helpStyle = list.DefaultStyles().HelpStyle.PaddingLeft(4).PaddingBottom(1)
quitTextStyle = lipgloss.NewStyle().Margin(1, 0, 2, 4)
)
type item string
func (i item) FilterValue() string { return "" }
type itemDelegate struct{}
func (d itemDelegate) Height() int { return 1 }
func (d itemDelegate) Spacing() int { return 0 }
func (d itemDelegate) Update(_ tea.Msg, _ *list.Model) tea.Cmd { return nil }
func (d itemDelegate) Render(w io.Writer, m list.Model, index int, listItem list.Item) {
i, ok := listItem.(item)
if !ok {
return
}
str := fmt.Sprintf("%d. %s", index+1, i)
fn := itemStyle.Render
if index == m.Index() {
fn = func(s ...string) string {
return selectedItemStyle.Render("> " + strings.Join(s, " "))
}
}
fmt.Fprint(w, fn(str))
}
type model struct {
list list.Model
choice string
quitting bool
}
func (m model) Init() tea.Cmd {
return nil
}
func (m model) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
switch msg := msg.(type) {
case tea.WindowSizeMsg:
m.list.SetWidth(msg.Width)
return m, nil
case tea.KeyMsg:
switch keypress := msg.String(); keypress {
case "q", "ctrl+c":
m.quitting = true
return m, tea.Quit
case "enter":
i, ok := m.list.SelectedItem().(item)
if ok {
m.choice = string(i)
}
return m, tea.Quit
}
}
var cmd tea.Cmd
m.list, cmd = m.list.Update(msg)
return m, cmd
}
func (m model) View() string {
if m.choice != "" {
return quitTextStyle.Render(fmt.Sprintf("%s? Sounds good to me.", m.choice))
}
if m.quitting {
return quitTextStyle.Render("Not hungry? That’s cool.")
}
return "\n" + m.list.View()
}
func main() {
items := []list.Item{
item("Ramen"),
item("Tomato Soup"),
item("Hamburgers"),
item("Cheeseburgers"),
item("Currywurst"),
item("Okonomiyaki"),
item("Pasta"),
item("Fillet Mignon"),
item("Caviar"),
item("Just Wine"),
}
const defaultWidth = 20
l := list.New(items, itemDelegate{}, defaultWidth, listHeight)
l.Title = "What do you want for dinner?"
l.SetShowStatusBar(false)
l.SetFilteringEnabled(false)
l.Styles.Title = titleStyle
l.Styles.PaginationStyle = paginationStyle
l.Styles.HelpStyle = helpStyle
m := model{list: l}
if _, err := tea.NewProgram(m).Run(); err != nil {
fmt.Println("Error running program:", err)
os.Exit(1)
}
}
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