spacingModeFromString static method
Implementation
static SpacingMode spacingModeFromString(String str) {
str = str.toLowerCase();
if (str == 'length') return SpacingMode.length;
if (str == 'fixed') return SpacingMode.fixed;
if (str == 'percent') return SpacingMode.percent;
throw ArgumentError('Unknown position mode: $str');
}