/// <summary>
/// Hides choices.
/// </summary>
/// <typeparam name="T">The prompt result type.</typeparam>
/// <param name="obj">The prompt.</param>
/// <returns>The same instance so that multiple calls can be chained.</returns>
public static TextPrompt <T> HideChoices <T>(this TextPrompt <T> obj)
{
return(ShowChoices(obj, false));
}
/// <summary>
/// Shows choices.
/// </summary>
/// <typeparam name="T">The prompt result type.</typeparam>
/// <param name="obj">The prompt.</param>
/// <returns>The same instance so that multiple calls can be chained.</returns>
public static TextPrompt <T> ShowChoices <T>(this TextPrompt <T> obj)
{
return(ShowChoices(obj, true));
}
/// <summary>
/// Shows the default value.
/// </summary>
/// <typeparam name="T">The prompt result type.</typeparam>
/// <param name="obj">The prompt.</param>
/// <returns>The same instance so that multiple calls can be chained.</returns>
public static TextPrompt <T> ShowDefaultValue <T>(this TextPrompt <T> obj)
{
return(ShowDefaultValue(obj, true));
}
/// <summary>
/// Hides the default value.
/// </summary>
/// <typeparam name="T">The prompt result type.</typeparam>
/// <param name="obj">The prompt.</param>
/// <returns>The same instance so that multiple calls can be chained.</returns>
public static TextPrompt <T> HideDefaultValue <T>(this TextPrompt <T> obj)
{
return(ShowDefaultValue(obj, false));
}
/// <summary>
/// Shows the prompt and requests input from the user.
/// </summary>
/// <param name="console">The console to show the prompt in.</param>
/// <returns>The user input converted to the expected type.</returns>
/// <inheritdoc/>
public T Show(IAnsiConsole console)
{
if (console is null)
{
throw new ArgumentNullException(nameof(console));
}
var promptStyle = PromptStyle ?? Style.Plain;
WritePrompt(console);
while (true)
{
var input = console.ReadLine(promptStyle, IsSecret);
// Nothing entered?
if (string.IsNullOrWhiteSpace(input))
{
if (DefaultValue != null)
{
console.Write(TextPrompt <T> .GetTypeConverter().ConvertToInvariantString(DefaultValue.Value), promptStyle);
console.WriteLine();
return(DefaultValue.Value);
}
if (!AllowEmpty)
{
continue;
}
}
console.WriteLine();
// Try convert the value to the expected type.
if (!TextPrompt <T> .TryConvert(input, out var result) || result == null)
{
console.MarkupLine(ValidationErrorMessage);
WritePrompt(console);
continue;
}
if (Choices.Count > 0)
{
if (Choices.Contains(result))
{
return(result);
}
else
{
console.MarkupLine(InvalidChoiceMessage);
WritePrompt(console);
continue;
}
}
// Run all validators
if (!ValidateResult(result, out var validationMessage))
{
console.MarkupLine(validationMessage);
WritePrompt(console);
continue;
}
return(result);
}
}