UnityEditor.DecoratorDrawer.OnGUI C# (CSharp) Method

        public virtual void OnGUI(Rect position)
        {
        }

        public bool OnGUI(Rect position, SerializedProperty property, GUIContent label, bool includeChildren)
        {
            float height = position.height;

            position.height = 0.0f;
            if (this.m_DecoratorDrawers != null && !this.isCurrentlyNested)
            {
                using (List <DecoratorDrawer> .Enumerator enumerator = this.m_DecoratorDrawers.GetEnumerator())
                {
                    while (enumerator.MoveNext())
                    {
                        DecoratorDrawer current = enumerator.Current;
                        position.height = current.GetHeight();
                        float labelWidth = EditorGUIUtility.labelWidth;
                        float fieldWidth = EditorGUIUtility.fieldWidth;
                        current.OnGUI(position);
                        EditorGUIUtility.labelWidth = labelWidth;
                        EditorGUIUtility.fieldWidth = fieldWidth;
                        position.y += position.height;
                        height     -= position.height;
                    }
                }
            }
            position.height = height;
            if (this.propertyDrawer != null)
            {
                float labelWidth = EditorGUIUtility.labelWidth;
                float fieldWidth = EditorGUIUtility.fieldWidth;
                this.propertyDrawer.OnGUISafe(position, property.Copy(), label ?? EditorGUIUtility.TempContent(property.displayName));
                EditorGUIUtility.labelWidth = labelWidth;
                EditorGUIUtility.fieldWidth = fieldWidth;
                return(false);
            }
            if (!includeChildren)
            {
                return(EditorGUI.DefaultPropertyField(position, property, label));
            }
            Vector2            iconSize           = EditorGUIUtility.GetIconSize();
            bool               enabled            = GUI.enabled;
            int                indentLevel        = EditorGUI.indentLevel;
            int                num                = indentLevel - property.depth;
            SerializedProperty serializedProperty = property.Copy();
            SerializedProperty endProperty        = serializedProperty.GetEndProperty();

            position.height       = EditorGUI.GetSinglePropertyHeight(serializedProperty, label);
            EditorGUI.indentLevel = serializedProperty.depth + num;
            bool enterChildren = EditorGUI.DefaultPropertyField(position, serializedProperty, label) && EditorGUI.HasVisibleChildFields(serializedProperty);

            position.y += position.height + 2f;
            while (serializedProperty.NextVisible(enterChildren) && !SerializedProperty.EqualContents(serializedProperty, endProperty))
            {
                EditorGUI.indentLevel = serializedProperty.depth + num;
                position.height       = EditorGUI.GetPropertyHeight(serializedProperty, (GUIContent)null, false);
                EditorGUI.BeginChangeCheck();
                enterChildren = ScriptAttributeUtility.GetHandler(serializedProperty).OnGUI(position, serializedProperty, (GUIContent)null, false) && EditorGUI.HasVisibleChildFields(serializedProperty);
                if (!EditorGUI.EndChangeCheck())
                {
                    position.y += position.height + 2f;
                }
                else
                {
                    break;
                }
            }
            GUI.enabled = enabled;
            EditorGUIUtility.SetIconSize(iconSize);
            EditorGUI.indentLevel = indentLevel;
            return(false);
        }