How to check if StyleBackground is set?

Unity Engine
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1

I want to implement some lazy initialization of a property of type StyleBackground like this:

protected StyleBackground image;
public StyleBackground Image
{
	get
	{
		if (image.value == default)
			image = LoadImage();
		return image;
    }
}

What should I check to find out whether “image” is already set? Is image.value the right thing? Or perhaps image.keyword would be better? Like

image.keyword == StyleKeyword.Undefined

Addition. Found out - after setting the image.value, the image.keyword remains untouched (StyleKeyword.Undefined by default). So, image.keyword is not the property to check whether StyleBackground is set or not.

2

Hello!

With StyleBackground (and other StyleProperties, ex: StyleColor, StyleLength) you could set the value to either background or a keyword, for example, either a texture2D or StyleKeyword.Auto. So if you wanted to check if the value of a StyleBackground was changed thoroughly, you could do:

if (image.value == default && image.keyword == StyleKeyword.Undefined)