Rewrite code for unfolding and make it automatic on scene load, which works better.

editor/editor_folding.cpp

@@ -2,6 +2,7 @@
 
 #include "core/os/file_access.h"
 #include "editor_settings.h"
+#include "editor_inspector.h"
 
 PoolVector<String> EditorFolding::_get_unfolds(const Object *p_object) {
 
@@ -171,5 +172,89 @@ bool EditorFolding::has_folding_data(const String &p_path) {
 	return FileAccess::exists(file);
 }
 
+
+void EditorFolding::_do_object_unfolds(Object *p_object, Set<RES> &resources) {
+
+	List<PropertyInfo> plist;
+	p_object->get_property_list(&plist);
+	String group_base;
+	String group;
+
+	Set<String> unfold_group;
+
+	for (List<PropertyInfo>::Element *E = plist.front(); E; E = E->next()) {
+
+		if (E->get().usage & PROPERTY_USAGE_CATEGORY) {
+			group="";
+			group_base="";
+		}
+		if (E->get().usage & PROPERTY_USAGE_GROUP) {
+			group = E->get().name;
+			group_base = E->get().hint_string;
+			if (group_base.ends_with("_")) {
+				group_base=group_base.substr(0,group_base.length()-1);
+			}
+		}
+
+		//can unfold
+		if (E->get().usage & PROPERTY_USAGE_EDITOR) {
+
+
+			if (group != "") { //group
+				if (group_base==String() || E->get().name.begins_with(group_base)) {
+					bool can_revert = EditorPropertyRevert::can_property_revert(p_object,E->get().name);
+					if (can_revert)	{
+						unfold_group.insert(group);
+					}
+				}
+			} else { //path
+				int last = E->get().name.find_last("/");
+				if (last!=-1) {
+					bool can_revert = EditorPropertyRevert::can_property_revert(p_object,E->get().name);
+					if (can_revert) {
+						unfold_group.insert(E->get().name.substr(0,last));
+					}
+				}
+			}
+		}
+
+		if (E->get().type == Variant::OBJECT) {
+			RES res = p_object->get(E->get().name);
+			if (res.is_valid() && !resources.has(res) && res->get_path() != String() && !res->get_path().is_resource_file()) {
+
+				resources.insert(res);
+				_do_object_unfolds(res.ptr(),resources);
+			}
+		}
+	}
+
+	for (Set<String>::Element *E=unfold_group.front();E;E=E->next()) {
+	     p_object->editor_set_section_unfold(E->get(),true);
+	}
+}
+
+void EditorFolding::_do_node_unfolds(Node *p_root, Node *p_node, Set<RES> &resources) {
+	if (p_root != p_node) {
+		if (!p_node->get_owner()) {
+			return; //not owned, bye
+		}
+		if (p_node->get_owner() != p_root && !p_root->is_editable_instance(p_node)) {
+			return;
+		}
+	}
+
+	_do_object_unfolds(p_node,resources);
+
+	for (int i = 0; i < p_node->get_child_count(); i++) {
+		_do_node_unfolds(p_root, p_node->get_child(i), resources);
+	}
+}
+
+void EditorFolding::unfold_scene(Node *p_scene) {
+
+	Set<RES> resources;
+	_do_node_unfolds(p_scene,p_scene,resources);
+}
+
 EditorFolding::EditorFolding() {
 }

editor/editor_folding.h

@@ -10,6 +10,9 @@ class EditorFolding {
 
 	void _fill_folds(const Node *p_root, const Node *p_node, Array &p_folds, Array &resource_folds, Set<RES> &resources);
 
+	void _do_object_unfolds(Object *p_object, Set<RES> &resources);
+	void _do_node_unfolds(Node *p_root, Node *p_node, Set<RES> &resources);
+
 public:
 	void save_resource_folding(const RES &p_resource, const String &p_path);
 	void load_resource_folding(RES p_resource, const String &p_path);
@@ -17,6 +20,8 @@ public:
 	void save_scene_folding(const Node *p_scene, const String &p_path);
 	void load_scene_folding(Node *p_scene, const String &p_path);
 
+	void unfold_scene(Node *p_scene);
+
 	bool has_folding_data(const String &p_path);
 
 	EditorFolding();

editor/editor_inspector.cpp

@@ -297,16 +297,12 @@ bool EditorProperty::is_read_only() const {
 	return read_only;
 }
 
-bool EditorProperty::_might_be_in_instance() {
-
-	if (!object)
-		return false;
-
-	Node *node = Object::cast_to<Node>(object);
+bool EditorPropertyRevert::may_node_be_in_instance(Node *p_node) {
 
 	Node *edited_scene = EditorNode::get_singleton()->get_edited_scene();
 
 	bool might_be = false;
+	Node *node = p_node;
 
 	while (node) {
 
@@ -328,13 +324,9 @@ bool EditorProperty::_might_be_in_instance() {
 	return might_be; // or might not be
 }
 
-bool EditorProperty::_get_instanced_node_original_property(const StringName &p_prop, Variant &value) {
-
-	Node *node = Object::cast_to<Node>(object);
-
-	if (!node)
-		return false;
+bool EditorPropertyRevert::get_instanced_node_original_property(Node *p_node, const StringName &p_prop, Variant &value) {
 
+	Node *node = p_node;
 	Node *orig = node;
 
 	Node *edited_scene = EditorNode::get_singleton()->get_edited_scene();
@@ -376,7 +368,7 @@ bool EditorProperty::_get_instanced_node_original_property(const StringName &p_p
 
 	if (!found) {
 		//if not found, try default class value
-		Variant attempt = ClassDB::class_get_default_property_value(object->get_class_name(), property);
+		Variant attempt = ClassDB::class_get_default_property_value(node->get_class_name(), p_prop);
 		if (attempt.get_type() != Variant::NIL) {
 			found = true;
 			value = attempt;
@@ -386,14 +378,14 @@ bool EditorProperty::_get_instanced_node_original_property(const StringName &p_p
 	return found;
 }
 
-bool EditorProperty::_is_property_different(const Variant &p_current, const Variant &p_orig) {
+bool EditorPropertyRevert::is_node_property_different(Node *p_node, const Variant &p_current, const Variant &p_orig) {
 
 	// this is a pretty difficult function, because a property may not be saved but may have
 	// the flag to not save if one or if zero
 
 	//make sure there is an actual state
 	{
-		Node *node = Object::cast_to<Node>(object);
+		Node *node = p_node;
 		if (!node)
 			return false;
 
@@ -435,46 +427,55 @@ bool EditorProperty::_is_property_different(const Variant &p_current, const Vari
 	return bool(Variant::evaluate(Variant::OP_NOT_EQUAL, p_current, p_orig));
 }
 
-void EditorProperty::update_reload_status() {
+bool EditorPropertyRevert::can_property_revert(Object *p_object, const StringName &p_property) {
 
-	if (property == StringName())
-		return; //no property, so nothing to do
+	bool has_revert = false;
 
-	bool has_reload = false;
+	Node *node = Object::cast_to<Node>(p_object);
 
-	if (_might_be_in_instance()) {
+	if (node && EditorPropertyRevert::may_node_be_in_instance(node)) {
 		//check for difference including instantiation
 		Variant vorig;
-		if (_get_instanced_node_original_property(property, vorig)) {
-			Variant v = object->get(property);
+		if (EditorPropertyRevert::get_instanced_node_original_property(node, p_property, vorig)) {
+			Variant v = p_object->get(p_property);
 
-			if (_is_property_different(v, vorig)) {
-				has_reload = true;
+			if (EditorPropertyRevert::is_node_property_different(node, v, vorig)) {
+				has_revert = true;
 			}
 		}
 	} else {
 		//check for difference against default class value instead
-		Variant default_value = ClassDB::class_get_default_property_value(object->get_class_name(), property);
-		if (default_value != Variant() && default_value != object->get(property)) {
-			has_reload = true;
+		Variant default_value = ClassDB::class_get_default_property_value(p_object->get_class_name(), p_property);
+		if (default_value != Variant() && default_value != p_object->get(p_property)) {
+			has_revert = true;
 		}
 	}
 
-	if (object->call("property_can_revert", property).operator bool()) {
+	if (p_object->call("property_can_revert", p_property).operator bool()) {
 
-		has_reload = true;
+		has_revert = true;
 	}
 
-	if (!has_reload && !object->get_script().is_null()) {
-		Ref<Script> scr = object->get_script();
+	if (!has_revert && !p_object->get_script().is_null()) {
+		Ref<Script> scr = p_object->get_script();
 		Variant orig_value;
-		if (scr->get_property_default_value(property, orig_value)) {
-			if (orig_value != object->get(property)) {
-				has_reload = true;
+		if (scr->get_property_default_value(p_property, orig_value)) {
+			if (orig_value != p_object->get(p_property)) {
+				has_revert = true;
 			}
 		}
 	}
 
+	return has_revert;
+}
+
+void EditorProperty::update_reload_status() {
+
+	if (property == StringName())
+		return; //no property, so nothing to do
+
+	bool has_reload = EditorPropertyRevert::can_property_revert(object, property);
+
 	if (has_reload != can_revert) {
 		can_revert = has_reload;
 		update();
@@ -638,7 +639,8 @@ void EditorProperty::_gui_input(const Ref<InputEvent> &p_event) {
 
 			Variant vorig;
 
-			if (_might_be_in_instance() && _get_instanced_node_original_property(property, vorig)) {
+			Node *node = Object::cast_to<Node>(object);
+			if (node && EditorPropertyRevert::may_node_be_in_instance(node) && EditorPropertyRevert::get_instanced_node_original_property(node, property, vorig)) {
 
 				emit_signal("property_changed", property, vorig.duplicate(true));
 				update_property();
@@ -1380,28 +1382,6 @@ void EditorInspector::update_tree() {
 
 	//	TreeItem *current_category = NULL;
 
-	bool unfold_if_edited = false;
-
-	if (use_folding && auto_unfold_edited && get_tree()->get_edited_scene_root()) {
-		String path;
-		Node *node = Object::cast_to<Node>(object);
-		if (node) {
-			path = get_tree()->get_edited_scene_root()->get_filename();
-		}
-		Resource *res = Object::cast_to<Resource>(object);
-		if (res) {
-			if (res->get_path().is_resource_file()) {
-				path = res->get_path();
-			} else if (res->get_path().begins_with("res://")) { //internal resource
-				path = get_tree()->get_edited_scene_root()->get_filename();
-			}
-		}
-
-		if (!EditorNode::get_singleton()->get_editor_folding().has_folding_data(path)) {
-			unfold_if_edited = true;
-		}
-	}
-
 	String filter = search_box ? search_box->get_text() : "";
 	String group;
 	String group_base;
@@ -1721,13 +1701,6 @@ void EditorInspector::update_tree() {
 					if (current_selected && ep->property == current_selected) {
 						ep->select(current_focusable);
 					}
-
-					if (unfold_if_edited && ep->can_revert_to_default()) {
-						//if edited and there is a parent section, unfold it.
-						if (current_vbox && section_map.has(current_vbox)) {
-							section_map[current_vbox]->unfold();
-						}
-					}
 				}
 			}
 
@@ -2224,10 +2197,6 @@ String EditorInspector::get_object_class() const {
 	return object_class;
 }
 
-void EditorInspector::set_auto_unfold_edited(bool p_enable) {
-	auto_unfold_edited = p_enable;
-}
-
 void EditorInspector::_bind_methods() {
 
 	ClassDB::bind_method("_property_changed", &EditorInspector::_property_changed, DEFVAL(false));
@@ -2284,7 +2253,6 @@ EditorInspector::EditorInspector() {
 	set_process(true);
 	property_focusable = -1;
 	use_sub_inspector_bg = false;
-	auto_unfold_edited = false;
 
 	get_v_scrollbar()->connect("value_changed", this, "_vscroll_changed");
 	update_scroll_request = -1;

editor/editor_inspector.h

@@ -37,6 +37,15 @@
 
 class UndoRedo;
 
+class EditorPropertyRevert {
+public:
+	static bool may_node_be_in_instance(Node *p_node);
+	static bool get_instanced_node_original_property(Node *p_node, const StringName &p_prop, Variant &value);
+	static bool is_node_property_different(Node *p_node, const Variant &p_current, const Variant &p_orig);
+
+	static bool can_property_revert(Object *p_object, const StringName &p_property);
+};
+
 class EditorProperty : public Container {
 
 	GDCLASS(EditorProperty, Container)
@@ -70,7 +79,6 @@ private:
 	bool use_folding;
 	bool draw_top_bg;
 
-	bool _might_be_in_instance();
 	bool _is_property_different(const Variant &p_current, const Variant &p_orig);
 	bool _get_instanced_node_original_property(const StringName &p_prop, Variant &value);
 	void _focusable_focused(int p_index);
@@ -272,7 +280,6 @@ class EditorInspector : public ScrollContainer {
 	bool read_only;
 	bool keying;
 	bool use_sub_inspector_bg;
-	bool auto_unfold_edited;
 
 	float refresh_countdown;
 	bool update_tree_pending;
@@ -367,7 +374,6 @@ public:
 	String get_object_class() const;
 
 	void set_use_sub_inspector_bg(bool p_enable);
-	void set_auto_unfold_edited(bool p_enable);
 
 	EditorInspector();
 };

editor/editor_node.cpp

@@ -2926,7 +2926,12 @@ Error EditorNode::load_scene(const String &p_scene, bool p_ignore_broken_deps, b
 	_update_scene_tabs();
 	_add_to_recent_scenes(lpath);
 
-	editor_folding.load_scene_folding(new_scene, lpath);
+	if (editor_folding.has_folding_data(lpath)) {
+		editor_folding.load_scene_folding(new_scene, lpath);
+	} else if (EDITOR_GET("interface/inspector/auto_unfold_foreign_scenes")) {
+		editor_folding.unfold_scene(new_scene);
+		editor_folding.save_scene_folding(new_scene, lpath);
+	}
 
 	prev_scene->set_disabled(previous_scenes.size() == 0);
 	opening_prev = false;
@@ -4878,7 +4883,7 @@ EditorNode::EditorNode() {
 	EDITOR_DEF_RST("interface/scene_tabs/show_thumbnail_on_hover", true);
 	EDITOR_DEF_RST("interface/inspector/capitalize_properties", true);
 	EDITOR_DEF_RST("interface/inspector/disable_folding", false);
-	EDITOR_DEF_RST("interface/inspector/auto_unfold_edited", true);
+	EDITOR_DEF_RST("interface/inspector/auto_unfold_foreign_scenes", true);
 	EDITOR_DEF("interface/inspector/horizontal_vector2_editing", false);
 	EDITOR_DEF("interface/inspector/horizontal_vector_types_editing", true);
 	EDITOR_DEF("interface/inspector/open_resources_in_current_inspector", true);

editor/inspector_dock.cpp

@@ -593,7 +593,6 @@ InspectorDock::InspectorDock(EditorNode *p_editor, EditorData &p_editor_data) {
 	inspector->set_undo_redo(&editor_data->get_undo_redo());
 
 	inspector->set_use_filter(true); // TODO: check me
-	inspector->set_auto_unfold_edited(bool(EDITOR_GET("interface/inspector/auto_unfold_edited")));
 
 	inspector->connect("resource_selected", this, "_resource_selected");
 	inspector->connect("property_keyed", this, "_property_keyed");