feat: 实现模块5 - TUI快捷键系统 (Ctrl+L清空/Ctrl+T切换语言)

internal/tui/app.go

@@ -14,6 +14,7 @@ type model struct {
 	textInput  textinput.Model
 	result     string
 	targetLang string
+	langIndex  int
 }
 
 var (
@@ -37,8 +38,12 @@ var (
 	langStyle = lipgloss.NewStyle().
 			Foreground(lipgloss.Color("#FBBF24")).
 			Bold(true)
+	keyStyle = lipgloss.NewStyle().
+			Foreground(lipgloss.Color("#60A5FA"))
 )
 
+var supportedLangs = []string{"zh-CN", "en-US", "ja", "ko", "zh-TW", "es", "fr", "de"}
+
 func NewApp(cfg *config.Config, t *translator.Translator) *tea.Program {
 	targetLang := "zh-CN"
 	if cfg != nil && cfg.DefaultTargetLang != "" {
@@ -71,7 +76,19 @@ func (m model) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
 		switch msg.Type {
 		case tea.KeyEnter:
 			// 回车键处理，后续模块会添加翻译逻辑
-		case tea.KeyCtrlC, tea.KeyEsc:
+		case tea.KeyCtrlC:
+			return m, tea.Quit
+		case tea.KeyCtrlL:
+			// Ctrl+L: 清空输入和结果
+			m.textInput.SetValue("")
+			m.result = ""
+			return m, nil
+		case tea.KeyCtrlT:
+			// Ctrl+T: 切换语言
+			m.langIndex = (m.langIndex + 1) % len(supportedLangs)
+			m.targetLang = supportedLangs[m.langIndex]
+			return m, nil
+		case tea.KeyEsc:
 			return m, tea.Quit
 		}
 	}
@@ -82,7 +99,11 @@ func (m model) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
 
 func (m model) View() string {
 	resultBox := m.renderResult()
-	helpText := helpStyle.Render("\n  Ctrl+C 退出  ·  Enter 翻译")
+	helpText := helpStyle.Render("\n  " +
+		keyStyle.Render("Ctrl+L") + " 清空  " +
+		keyStyle.Render("Ctrl+T") + " 切换语言  " +
+		keyStyle.Render("Enter") + " 翻译  " +
+		keyStyle.Render("Ctrl+C") + " 退出")
 
 	return "\n" +
 		"  " + headerStyle.Render("YOYO翻译") + "\n" +