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Foldout Expanded By Default

By using a combination of the Property States system and Odin's OnInspectorInit attribute we can set the state of the foldout everytime the inspector initializes.

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[System.Serializable]
public class SomeClass
{
    public float SomeField;
    public float SomeOtherField;
    public float AnotherField;
}

[OnInspectorInit("@$property.State.Expanded = true")]
public SomeClass ClassInstance;

The @ sign denotes this string as an [Attribute Expression] which makes everything behind it be basically treated as normal code. $property is a [NamedValue] and gives us the InspectorProperty of the ClassInstance field. It holds the foldout's state which we can then set directly.

Last update: September 30, 2021
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