xNode/Scripts/Editor/GraphAndNodeEditor.cs

using System;
using System.Collections;
using System.Collections.Generic;
using System.Reflection;
using UnityEditor;
using UnityEngine;

namespace XNodeEditor {
    /// <summary> Override graph inspector to show an 'Open Graph' button at the top </summary>
    [CustomEditor(typeof(XNode.NodeGraph), true)]
    public class GlobalGraphEditor : Editor {
        public override void OnInspectorGUI() {
            serializedObject.Update();

            if (GUILayout.Button("Edit graph", GUILayout.Height(40))) {
                NodeEditorWindow.Open(serializedObject.targetObject as XNode.NodeGraph);
            }

            GUILayout.Space(EditorGUIUtility.singleLineHeight);
            GUILayout.Label("Raw data", "BoldLabel");

            DrawDefaultInspector();

            serializedObject.ApplyModifiedProperties();
        }
    }

    [CustomEditor(typeof(XNode.Node), true)]
    public class GlobalNodeEditor : Editor {
        public override void OnInspectorGUI() {
            serializedObject.Update();

            if (GUILayout.Button("Edit graph", GUILayout.Height(40))) {
                SerializedProperty graphProp = serializedObject.FindProperty("graph");
                NodeEditorWindow w = NodeEditorWindow.Open(graphProp.objectReferenceValue as XNode.NodeGraph);
                w.Home(); // Focus selected node
            }

            GUILayout.Space(EditorGUIUtility.singleLineHeight);
            GUILayout.Label("Raw data", "BoldLabel");

            // Now draw the node itself.
            DrawDefaultInspector();

            serializedObject.ApplyModifiedProperties();
        }
    }
}