How does it work?

It uses a CustomPropertyDrawer to override the default object field. The new object field has a toggle button. Once you click that button, an overlay will appear in the scene window called Object Picker Pro. You can modify its mode or apply a filter.

Modes

Mouse Selection: This mode enables you to select objects by clicking on them.

Button Selection: This mode displays a button for each object in the scene.

Filter

You can filter the Hierarchy window, enter the Isolation view, and filter by name or type.

EditorAutoCompleteTextField

The Object Picker Pro uses autocomplete text fields. You can also take advantage of this feature in your own custom editors.