Possible to extend ObjectField or override the dialog to create custom asset picker?

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I'm trying to find a solution to get over the problem at the ObjectField asset picker dialog, it list all of my object assets of the supplied type in a flat list. In my case the folder structure of the assets is important for identifying the right asset and a tree view and custom search behavior would be a much better option for my application.

Ideally I'd override the picker dialog with a custom editor window but I still want the asset drag and drop functionality.

Otherwise is there a way to build a custom editor Field that on the surface looks exact the same and can support the drag and drop behavior of an ObjectField while pulling up a custom dialog?

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Answer by Adam-Mechtley · Jan 12, 2017 at 08:03 AM

To do this, you'll basically need to just create your own control, as it's not really possible to modularly substitute one part of ObjectField. Luckily, this is all done in C# so you can dig into the UnityEditor dll and look at the code for how it's done. The particular things you'll probably want to look at are EditorGUI.DoObjectField() and the ObjectSelector class (which is just an EditorWindow).

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drastick · Jan 12, 2017 at 09:06 AM 0

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That is some great advice, I never thought to dig into the UnityEditor dll to see how things are done. It is like opening up a recipe book for building editor tools! I should be able to build a custom object field for my type to open a specialized picker for the job. Thanks!

Answer 2

Answer by Deepscorn · Dec 19, 2021 at 05:53 PM

Another way (then Adam-Mechtley proposed) described here https://stackoverflow.com/questions/41772554/filtering-an-object-field-in-unity-editor-extension

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Possible to extend ObjectField or override the dialog to create custom asset picker?

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