How to resize NSTextView according to its content?

Question

I am trying to set an attributed string within NSTextView. I want to increase its height based on its content, initially it is set to some default value.

So I tried

Answer 1

+ (float)heightForString:(NSString *)myString font:(NSFont *)myFont andWidth:(float)myWidth andPadding:(float)padding {
     NSTextStorage *textStorage = [[NSTextStorage alloc] initWithString:myString];
     NSTextContainer *textContainer = [[NSTextContainer alloc] initWithContainerSize:NSMakeSize(myWidth, FLT_MAX)];
     NSLayoutManager *layoutManager = [[NSLayoutManager alloc] init];
     [layoutManager addTextContainer:textContainer];
     [textStorage addLayoutManager:layoutManager];
     [textStorage addAttribute:NSFontAttributeName value:myFont
                    range:NSMakeRange(0, textStorage.length)];
     textContainer.lineFragmentPadding = padding;

     (void) [layoutManager glyphRangeForTextContainer:textContainer];
     return [layoutManager usedRectForTextContainer:textContainer].size.height;
}

I did the function using this reference: Documentation

Example:

float width = textView.frame.size.width - 2 * textView.textContainerInset.width;
float proposedHeight = [Utils heightForString:textView.string font:textView.font andWidth:width
                                   andPadding:textView.textContainer.lineFragmentPadding];