isValidBackgroundImageValue static method
Implementation
static bool isValidBackgroundImageValue(String value) {
return (value.lastIndexOf(')') == value.length - 1) &&
(value.startsWith('url(') ||
value.startsWith('linear-gradient(') ||
value.startsWith('repeating-linear-gradient(') ||
value.startsWith('radial-gradient(') ||
value.startsWith('repeating-radial-gradient(') ||
value.startsWith('conic-gradient('));
}