MediaInfo.java 文件源码

private static <T> T setIfUpdate(ObservableMap<? extends String, ? extends Object> map,
        String key, WritableValue<T>... props) {
    T newValue = (T) map.get(key);
    if (newValue != null) {
        boolean stringEmpty = false;
        if (newValue instanceof String) {
            String newStr = (String) newValue;
            stringEmpty = newStr.isEmpty();
        }
        for (WritableValue<T> prop : props) {
            if (stringEmpty) {
                if (prop.getValue() == null) {
                    prop.setValue(newValue);
                }
            } else {
                prop.setValue(newValue);
            }
        }
    }
    return newValue;
}