Editor Scripting: calling a Property Drawer by reference

Questions & Answers
1

is there some way that I could call a property Drawer for a class from either a CustomInspector, or from a EditorWindow (essentially another Editor class)?

Context: I have gone through and made some property Drawers for classes, and was wondering if I could just call those PropertyDrawers in some CustomInspectors, so that I can get the same behavior, and appearance.

2

Well you could use the EditorGUI.PropertyField to have the system draw them for you.

Or you could hack around and retrieve the actual drawer for a given serialized property:

static Func<SerializedProperty, PropertyDrawer> getDrawer;

public static PropertyDrawer GetDrawer(SerializedProperty property)
{
    if(getDrawer == null)
    {
        var mtd = typeof(PropertyDrawer).GetMethod("GetDrawer", BindingFlags.NonPublic | BindingFlags.Static);
        getDrawer = (Func<SerializedProperty, PropertyDrawer>)Delegate.CreateDelegate(typeof(Func<SerializedProperty, PropertyDrawer>), null, mtd);
    }
    return getDrawer(property);
}
3

mostly solved by using the suggestion posted here by @Bunny83 though I have found that because I use List in several places that I need to find a different approach to getting at those.

// in [customInspector(typeof(ClassA))]
ClassA classA;
SerializedObject obj;
SerializedProperty property;

// in OnEnable
classA = (ClassA)target;
obj = new SerializedObject(classA);

// later in OnInspecotGUI
// CustomPropertyDrawer is for field named "data"
property = obj.FindProperty("data");
EditorGUI.PropertyField(GUILayoutUtility.GetRect(
    (float)Screen.width, EditorGUI.GetPropertyHeight(property) ),
    property);

this uses the CustomePropertyDrawer that was defined for the type “data” is