Creating an enum flags ObjectDrawer

[FeastSC2]

I wanted to use this enum flags to display flags properly in BD's inspector.

EnumFlagPropertyDrawer - Unify Community Wiki

wiki.unity3d.com

But I don't find a way to access the SerializedProperty in the OnGUI method with an ObjectDrawer.

public override void OnGUI(Rect position, SerializedProperty property, GUIContent label)

 

[Justin]

SerializedProperties aren't used by the inspector because those require a Unity object, which tasks are not. You should be able to do something similar though by using the field within the task.

 

[FeastSC2]

by using the field within the task.

What do you mean by this?

I'm not well versed in writing drawrers but I checked it out with a standard unity monobehaviour and it's as simple as this:

public override void OnGUI(Rect position, SerializedProperty property, GUIContent label)
{
    _property.intValue = EditorGUI.MaskField(_position, _label, _property.intValue, _property.enumNames);
}


// How to reproduce the same with an ObjectDrawer?
public override void OnGUI(GUIContent label)
{
    var flagSettings = (EnumWithFlagsAttribute)attribute;
}

 

[Justin]

It would look something like this, where flagSettingsString is retrieved with Enum.GetName

value = EditorGUILayout.MaskField(label, (int)value, flagSettingsString);

 

[FeastSC2]

Thanks that did the trick. Code is provided below should someone need it.

using System;
using System.Reflection;
using BehaviorDesigner.Editor;
using UnityEditor;
using UnityEngine;

//https://opsive.com/forum/index.php?threads/creating-an-enum-flags-objectdrawer.3029/#post-15005
// set this in editor folder
[CustomObjectDrawer(typeof(EnumFlagsBD))]
public class EnumFlagsBDDrawer : ObjectDrawer
{
    public override void OnGUI(GUIContent label)
    {
        var enumNames = Enum.GetNames(value.GetType());
        value = EditorGUILayout.MaskField(label, (int)value, enumNames);
    }
}


// set this in non-editor folder
using BehaviorDesigner.Runtime.Tasks;

public class EnumFlagsBD : ObjectDrawerAttribute
{
}