Apply To Dictionary

Requires Odin Inspector

Add the ApplyToDictionaryKeys / ApplyToDictionaryValues attributes to an attribute definition, let's call that one X. Every attribute that is put on the attribute definition X will now be applied to dictionary keys / values if X is applied to a dictionary.

Examples

// If DictionaryPreviewFieldAttribute is added to a dictionary, add the PreviewField attribute to its keys.
[ApplyToDictionaryKeys]
[PreviewField]
public class DictionaryPreviewFieldAttribute : Attribute { }

// If DictionaryValueDropdownAttribute is added to a dictionary, add the ValueDropdown attribute to its values.
[ApplyToDictionaryValues]
[ValueDropdown("@SomeMonoBehaviour.GetDropdownValues()")]
public class DictionaryValueDropdownAttribute : Attribute { }

// SomeMonoBehaviour.cs
public class SomeMonoBehaviour : SerializedMonoBehaviour
{
    [DictionaryPreviewField]
    [DictionaryValueDropdown]
    public Dictionary<Sprite, string> SomeDictionary = new Dictionary<Sprite, string>();
    
    public static List<string> GetDropdownValues() => new List<string>
    {
        "Value 1",
        "Value 2",
        "Value 3",
    };
}

Installation

Simply put the downloaded ApplyToDictionaryAttribute folder in your project and start using the attribute as shown in the examples. You can move the files, but make sure that ApplyToDictionaryKeys.cs and ApplyToDictionaryValues.cs are not in an editor folder or they will be removed during build, causing errors.