GLTF export: Propagate property_list_changed from extensions

Author: aaronfranke

modules/gltf/editor/editor_scene_exporter_gltf_settings.cpp

@@ -84,6 +84,11 @@ void EditorSceneExporterGLTFSettings::_get_property_list(List<PropertyInfo> *p_l
 	}
 }
 
+void EditorSceneExporterGLTFSettings::_on_extension_property_list_changed() {
+	generate_property_list(_document);
+	emit_signal("property_list_changed");
+}
+
 bool EditorSceneExporterGLTFSettings::_set_extension_setting(const String &p_name_str, const Variant &p_value) {
 	PackedStringArray split = String(p_name_str).split("/", true, 1);
 	if (!_config_name_to_extension_map.has(split[0])) {
@@ -130,6 +135,10 @@ void EditorSceneExporterGLTFSettings::generate_property_list(Ref<GLTFDocument> p
 	String image_format_hint_string = "None,PNG,JPEG";
 	// Add properties from all document extensions.
 	for (Ref<GLTFDocumentExtension> &extension : GLTFDocument::get_all_gltf_document_extensions()) {
+		const Callable on_prop_changed = callable_mp(this, &EditorSceneExporterGLTFSettings::_on_extension_property_list_changed);
+		if (!extension->is_connected("property_list_changed", on_prop_changed)) {
+			extension->connect("property_list_changed", on_prop_changed);
+		}
 		const String config_prefix = get_friendly_config_prefix(extension);
 		_config_name_to_extension_map[config_prefix] = extension;
 		// If the extension allows saving in different image formats, add to the enum.

modules/gltf/editor/editor_scene_exporter_gltf_settings.h

@@ -48,6 +48,7 @@ class EditorSceneExporterGLTFSettings : public RefCounted {
 	bool _set(const StringName &p_name, const Variant &p_value);
 	bool _get(const StringName &p_name, Variant &r_ret) const;
 	void _get_property_list(List<PropertyInfo> *p_list) const;
+	void _on_extension_property_list_changed();
 
 	bool _set_extension_setting(const String &p_name_str, const Variant &p_value);
 	bool _get_extension_setting(const String &p_name_str, Variant &r_ret) const;