forked from Mirrors/bubbletea
132 lines
2.7 KiB
Go
132 lines
2.7 KiB
Go
package main
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// A simple example that shows how to send messages to a Bubble Tea program
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// from outside the program using Program.Send(Msg).
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import (
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"fmt"
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"math/rand"
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"os"
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"strings"
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"time"
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"github.com/charmbracelet/bubbles/spinner"
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tea "github.com/charmbracelet/bubbletea"
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"github.com/charmbracelet/lipgloss"
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)
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var (
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spinnerStyle = lipgloss.NewStyle().Foreground(lipgloss.Color("63"))
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helpStyle = lipgloss.NewStyle().Foreground(lipgloss.Color("241")).Margin(1, 0)
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dotStyle = helpStyle.Copy().UnsetMargins()
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durationStyle = dotStyle.Copy()
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appStyle = lipgloss.NewStyle().Margin(1, 2, 0, 2)
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)
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type resultMsg struct {
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duration time.Duration
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food string
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}
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func (r resultMsg) String() string {
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if r.duration == 0 {
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return dotStyle.Render(strings.Repeat(".", 30))
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}
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return fmt.Sprintf("🍔 Ate %s %s", r.food,
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durationStyle.Render(r.duration.String()))
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}
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type model struct {
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spinner spinner.Model
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results []resultMsg
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quitting bool
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}
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func newModel() model {
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const numLastResults = 5
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s := spinner.New()
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s.Style = spinnerStyle
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return model{
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spinner: s,
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results: make([]resultMsg, numLastResults),
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}
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}
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func (m model) Init() tea.Cmd {
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return m.spinner.Tick
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}
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func (m model) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
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switch msg := msg.(type) {
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case tea.KeyMsg:
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m.quitting = true
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return m, tea.Quit
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case resultMsg:
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m.results = append(m.results[1:], msg)
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return m, nil
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case spinner.TickMsg:
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var cmd tea.Cmd
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m.spinner, cmd = m.spinner.Update(msg)
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return m, cmd
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default:
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return m, nil
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}
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}
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func (m model) View() string {
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var s string
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if m.quitting {
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s += "That’s all for today!"
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} else {
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s += m.spinner.View() + " Eating food..."
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}
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s += "\n\n"
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for _, res := range m.results {
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s += res.String() + "\n"
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}
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if !m.quitting {
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s += helpStyle.Render("Press any key to exit")
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}
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if m.quitting {
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s += "\n"
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}
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return appStyle.Render(s)
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}
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func main() {
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p := tea.NewProgram(newModel())
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// Simulate activity
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go func() {
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for {
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pause := time.Duration(rand.Int63n(899)+100) * time.Millisecond // nolint:gosec
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time.Sleep(pause)
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// Send the Bubble Tea program a message from outside the
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// tea.Program. This will block until it is ready to receive
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// messages.
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p.Send(resultMsg{food: randomFood(), duration: pause})
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}
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}()
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if _, err := p.Run(); err != nil {
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fmt.Println("Error running program:", err)
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os.Exit(1)
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}
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}
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func randomFood() string {
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food := []string{
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"an apple", "a pear", "a gherkin", "a party gherkin",
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"a kohlrabi", "some spaghetti", "tacos", "a currywurst", "some curry",
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"a sandwich", "some peanut butter", "some cashews", "some ramen",
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}
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return food[rand.Intn(len(food))] // nolint:gosec
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}
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