ConfigEntry.Gui.CollapsibleObject does not include fields in super classes

[rikka0w0]

As the title suggests. It is inconvenient when handling a large set of similar options and requires a lot of duplication and hard coding.

I found a solution. In DefaultGuiProviders.java:

    private static List<AbstractConfigListEntry> getChildren(String i18n, Class<?> fieldType, Object iConfig, Object iDefaults, GuiRegistryAccess guiProvider) {
-        return Arrays.stream(fieldType.getDeclaredFields())
+       return traverseFields(fieldType, true).stream()

where traverseFields is a new helper function:

	private static List<Field> traverseFields(Class<?> fieldType, boolean includeSuper) {
		List<Field> result = new LinkedList<>();
		Class<?> cls = fieldType;
		while (cls != null && !cls.equals(Object.class)) {
			result.addAll(Arrays.asList(cls.getDeclaredFields()));

			if (!includeSuper) {
				break;
			}

			cls = cls.getSuperclass();
		}
		return result;
	}

We could introduce another option in the CollapsibleObject annotation to specify whether we include the fields in its super class or not.