1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
|
package main
// A simple program that opens the alternate screen buffer then counts down
// from 5 and then exits.
import (
"fmt"
"log"
"time"
tea "github.com/charmbracelet/bubbletea"
)
type model int
type tickMsg time.Time
func main() {
p := tea.NewProgram(model(5), tea.WithAltScreen())
if _, err := p.Run(); err != nil {
log.Fatal(err)
}
}
func (m model) Init() tea.Cmd {
return tick()
}
func (m model) Update(message tea.Msg) (tea.Model, tea.Cmd) {
switch msg := message.(type) {
case tea.KeyMsg:
switch msg.String() {
case "q", "esc", "ctrl+c":
return m, tea.Quit
}
case tickMsg:
m--
if m <= 0 {
return m, tea.Quit
}
return m, tick()
}
return m, nil
}
func (m model) View() string {
return fmt.Sprintf("\n\n Hi. This program will exit in %d seconds...", m)
}
func tick() tea.Cmd {
return tea.Tick(time.Second, func(t time.Time) tea.Msg {
return tickMsg(t)
})
}
|
