Method DisplayTextMenu

util/ui/prompt.go:83–124

DisplayTextMenu lets the user choose from a list of options, either by name or by number.

(choices []string, promptTemplate string, templateValues ...map[string]interface{})

// DisplayTextMenu lets the user choose from a list of options, either by name
// or by number.
func (ui *UI) DisplayTextMenu(choices []string, promptTemplate string, templateValues ...map[string]interface{}) (string, error) {
	for i, c := range choices {
		t := fmt.Sprintf("%d. %s", i+1, c)
		ui.DisplayText(t)
	}
	ui.DisplayNewline()

	translatedPrompt := ui.TranslateText(promptTemplate, templateValues...)

	interactivePrompt := ui.Interactor.NewInteraction(translatedPrompt)

	interactivePrompt.SetIn(ui.In)
	interactivePrompt.SetOut(ui.OutForInteraction)

	value := "enter to skip"
	err := interactivePrompt.Resolve(&value)

	if isInterrupt(err) {
		ui.Exiter.Exit(sigIntExitCode)
	}

	if err != nil {
		return "", err
	}

	if value == "enter to skip" {
		return "", nil
	}

	i, err := strconv.Atoi(value)
	if err != nil {
		if contains(choices, value) {
			return value, nil
		}
		return "", InvalidChoiceError{Choice: value}
	}

	if i > len(choices) || i <= 0 {
		return "", ErrInvalidIndex
	}
	return choices[i-1], nil
}

// DisplayTextPrompt outputs the prompt and waits for user input.
func (ui *UI) DisplayTextPrompt(template string, templateValues ...map[string]interface{}) (string, error) {