package attribute

import "strconv"
import "gitlab.codemonkeysoftware.net/b/hatmill"

type StepValue *float32

func StepAny() StepValue {
	return nil
}

func StepFloat(value float32) StepValue {
	return &value
}

// Step indicates the minimum allowed change to a number input.
func Step(value StepValue) hatmill.Attrib {
	var attr = hatmill.Attrib{Key: "step"}
	if value == nil {
		attr.Value = String("any")
	} else {
		attr.Value = String(strconv.FormatFloat(float64(*value), 'G', -1, 32))
	}
	return attr
}