feat(examples): add cursor style example

examples/cursor-style/main.go

@@ -0,0 +1,61 @@
+package main
+
+import (
+	"fmt"
+	"os"
+
+	tea "github.com/charmbracelet/bubbletea/v2"
+)
+
+type model struct {
+	style  tea.CursorStyle
+	steady bool
+}
+
+func (m model) Init() (tea.Model, tea.Cmd) {
+	return m, tea.ShowCursor
+}
+
+func (m model) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
+	var cmd tea.Cmd
+	switch msg := msg.(type) {
+	case tea.KeyPressMsg:
+		switch msg.String() {
+		case "ctrl+q", "q":
+			return m, tea.Quit
+		case "left":
+			if m.style == tea.CursorBlock && !m.steady {
+				break
+			}
+			if !m.steady {
+				m.style--
+			}
+			m.steady = !m.steady
+			cmd = tea.SetCursorStyle(m.style, m.steady)
+		case "right":
+			if m.style == tea.CursorBar && m.steady {
+				break
+			}
+			if m.steady {
+				m.style++
+			}
+			m.steady = !m.steady
+			cmd = tea.SetCursorStyle(m.style, m.steady)
+		}
+	}
+	return m, cmd
+}
+
+func (m model) View() string {
+	return "Press left/right to change the cursor style, q or ctrl+c to quit." +
+		"\n\n" +
+		"  <- This is a cursor"
+}
+
+func main() {
+	p := tea.NewProgram(model{})
+	if _, err := p.Run(); err != nil {
+		fmt.Fprintf(os.Stderr, "Error: %v", err)
+		os.Exit(1)
+	}
+}