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feat(Prompt): add lazy validation. #140

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feat(Prompt): add lazy validation. #140

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16 changes: 13 additions & 3 deletions prompt.go
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Original file line number Diff line number Diff line change
Expand Up @@ -29,6 +29,9 @@ type Prompt struct {
// Validate is an optional function that fill be used against the entered value in the prompt to validate it.
Validate ValidateFunc

// Lazy validation on <Enter> only.
LazyValidation bool

// Mask is an optional rune that sets which character to display instead of the entered characters. This
// allows hiding private information like passwords.
Mask rune
Expand Down Expand Up @@ -157,10 +160,17 @@ func (p *Prompt) Run() (string, error) {

listen := func(input []rune, pos int, key rune) ([]rune, int, bool) {
_, _, keepOn := cur.Listen(input, pos, key)
err := validFn(cur.Get())
var prompt []byte
var (
err error
prompt []byte
)

if err != nil {
if p.LazyValidation == false {
err = validFn(cur.Get())
}


if err != nil || p.LazyValidation {
prompt = render(p.Templates.invalid, p.Label)
} else {
prompt = render(p.Templates.valid, p.Label)
Expand Down