public override void OnGUI(Rect position, SerializedProperty property, GUIContent label)
{
// Get sub properties
SerializedProperty type = property.FindPropertyRelative(nameof(type));
SerializedProperty index = property.FindPropertyRelative(nameof(index));
// Set height for just one control
position.height = LayoutUtilities.standardControlHeight;
// Put in the property foldout
property.isExpanded = EditorGUI.Foldout(position, property.isExpanded, label);
position.y += position.height;
if (property.isExpanded)
{
// Increse indent
EditorGUI.indentLevel++;
// Edit the type
EditorGUI.PropertyField(position, type);
position.y += position.height;
// Get a list of all possible level ids with this type
LevelID[] levelIDs = LevelSettings.GetAllLevelIDsOfType((LevelType)type.enumValueIndex);
// Select the names of the levels with this type
string[] names = levelIDs.Select(id => id.Data.EditorDisplayName).ToArray();
// Edit the property as a popup with the names of all the levels in this type
index.intValue = EditorGUIExt.Popup(position, index.intValue, names, new GUIContent(property.displayName));
// Resume indent
EditorGUI.indentLevel--;
}
}