add a dialog box

main.go

@@ -25,6 +25,16 @@ func dialogMessage() string {
 	return "Enter some letters and numbers. Every visitor to your I2P tunnel will receive the same letters and numbers."
 }
 
+func copyTitle() string {
+	//TODO internationalize
+	return "Share a string"
+}
+
+func copyMessage() string {
+	//TODO internationalize
+	return "Copy the URL below to share it with others"
+}
+
 func help() string {
 	formattedString := fmt.Sprintf("%s\n", "  -file string")
 	formattedString += fmt.Sprintf("%s\n", "        Serve a single file after loading it from the disk")
@@ -74,8 +84,10 @@ func main() {
 		printUsage()
 		log.Fatal("Serve only a string or a file, not both")
 	}
+	var got string
+	var ok bool
 	if *serveFile == "" && *serveString == "" {
-		got, ok := inputbox.InputBox(dialogTitle(), dialogMessage(), "")
+		got, ok = inputbox.InputBox(dialogTitle(), dialogMessage(), "")
 		if ok {
 			*serveString = got
 		}
@@ -94,6 +106,9 @@ func main() {
 	}
 	log.Println("Share the following URL:")
 	fmt.Printf("\t%s%s\n", "http://", ln.Addr().String())
+	if ok {
+		_, _ = inputbox.InputBox(copyTitle(), copyMessage(), ln.Addr().String())
+	}
 	defer ln.Close()
 	if *serveString != "" {
 		bytes := []byte(*serveString)