Add spinner browser to examples

examples/spinners/main.go

@@ -0,0 +1,99 @@
+package main
+
+import (
+	"fmt"
+	"os"
+
+	"github.com/charmbracelet/bubbles/spinner"
+	tea "github.com/charmbracelet/bubbletea"
+	"github.com/muesli/termenv"
+)
+
+var (
+	// Available spinners
+	spinners = []spinner.Spinner{
+		spinner.Line,
+		spinner.Dot,
+		spinner.MiniDot,
+		spinner.Jump,
+		spinner.Pulse,
+		spinner.Points,
+		spinner.Globe,
+		spinner.Moon,
+		spinner.Monkey,
+	}
+
+	color     = termenv.ColorProfile().Color
+	textStyle = termenv.Style{}.Foreground(color("252")).Styled
+	helpStyle = termenv.Style{}.Foreground(color("241")).Styled
+)
+
+func main() {
+	m := model{}
+	m.resetSpinner()
+
+	if err := tea.NewProgram(m).Start(); err != nil {
+		fmt.Println("could not run program:", err)
+		os.Exit(1)
+	}
+}
+
+type model struct {
+	index   int
+	spinner spinner.Model
+}
+
+func (m model) Init() tea.Cmd {
+	return spinner.Tick
+}
+
+func (m model) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
+	switch msg := msg.(type) {
+	case tea.KeyMsg:
+		switch msg.String() {
+		case "h", "left":
+			m.index--
+			if m.index <= 0 {
+				m.index = len(spinners) - 1
+			}
+			m.resetSpinner()
+			return m, nil
+		case "l", "right":
+			m.index++
+			if m.index >= len(spinners) {
+				m.index = 0
+			}
+			m.resetSpinner()
+			return m, nil
+		case "ctrl+c", "q":
+			return m, tea.Quit
+		default:
+			return m, nil
+		}
+	case spinner.TickMsg:
+		var cmd tea.Cmd
+		m.spinner, cmd = m.spinner.Update(msg)
+		return m, cmd
+	default:
+		return m, nil
+	}
+}
+
+func (m *model) resetSpinner() {
+	m.spinner = spinner.NewModel()
+	m.spinner.ForegroundColor = "69"
+	m.spinner.Spinner = spinners[m.index]
+}
+
+func (m model) View() (s string) {
+	gap := " "
+	switch m.index {
+	case 1:
+		gap = ""
+	default:
+		gap = " "
+	}
+	s += fmt.Sprintf("\n %s%s%s\n\n", m.spinner.View(), gap, textStyle("Spinning..."))
+	s += helpStyle("j/k, ←/→: change spinner • q: exit\n")
+	return
+}