forked from Mirrors/bubbletea
69 lines
1.0 KiB
Go
69 lines
1.0 KiB
Go
package main
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// A simple program that counts down from 5 and then exits.
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import (
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"fmt"
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"log"
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"time"
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"github.com/charmbracelet/tea"
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)
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type model int
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type tickMsg struct{}
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func main() {
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tea.Fullscreen()
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defer tea.ExitFullscreen()
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err := tea.NewProgram(initialize, update, view, subscriptions).Start()
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if err != nil {
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log.Fatal(err)
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}
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}
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func initialize() (tea.Model, tea.Cmd) {
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return model(5), nil
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}
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func update(message tea.Msg, mdl tea.Model) (tea.Model, tea.Cmd) {
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m, _ := mdl.(model)
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switch msg := message.(type) {
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case tea.KeyMsg:
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switch msg.String() {
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case "break":
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fallthrough
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case "esc":
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fallthrough
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case "q":
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return m, tea.Quit
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}
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case tickMsg:
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m -= 1
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if m <= 0 {
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return m, tea.Quit
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}
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}
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return m, nil
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}
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func subscriptions(_ tea.Model) tea.Subs {
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return tea.Subs{
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"tick": func(_ tea.Model) tea.Msg {
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time.Sleep(time.Second)
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return tickMsg{}
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},
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}
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}
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func view(mdl tea.Model) string {
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m, _ := mdl.(model)
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return fmt.Sprintf("\n\n Hi. This program will exit in %d seconds...", m)
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}
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