From 5a99304251ad72a9a0a12886715ca7d9fdd15767 Mon Sep 17 00:00:00 2001
From: kobewi <kobewi4e@gmail.com>
Date: Tue, 4 Apr 2023 15:59:50 +0200
Subject: [PATCH] Add a list of all sub-resources used in the scene

---
 editor/scene_tree_dock.cpp | 92 +++++++++++++++++++++++++++++++++++++-
 editor/scene_tree_dock.h   |  5 ++-
 2 files changed, 94 insertions(+), 3 deletions(-)

diff --git a/editor/scene_tree_dock.cpp b/editor/scene_tree_dock.cpp
index 2fd783102cc..7e5d85e1a8f 100644
--- a/editor/scene_tree_dock.cpp
+++ b/editor/scene_tree_dock.cpp
@@ -2748,9 +2748,8 @@ void SceneTreeDock::_add_children_to_popup(Object *p_obj, int p_depth) {
 		if (menu->get_item_count() == 0) {
 			menu->add_submenu_item(TTR("Sub-Resources"), "Sub-Resources");
 		}
-		int index = menu_subresources->get_item_count();
 		menu_subresources->add_icon_item(icon, E.name.capitalize(), EDIT_SUBRESOURCE_BASE + subresources.size());
-		menu_subresources->set_item_indent(index, p_depth);
+		menu_subresources->set_item_indent(-1, p_depth);
 		subresources.push_back(obj->get_instance_id());
 
 		_add_children_to_popup(obj, p_depth + 1);
@@ -2973,6 +2972,13 @@ void SceneTreeDock::_update_tree_menu() {
 	tree_menu->add_separator();
 	tree_menu->add_check_item(TTR("Auto Expand to Selected"), TOOL_AUTO_EXPAND);
 	tree_menu->set_item_checked(tree_menu->get_item_index(TOOL_AUTO_EXPAND), EDITOR_GET("docks/scene_tree/auto_expand_to_selected"));
+
+	PopupMenu *resource_list = memnew(PopupMenu);
+	resource_list->set_name("AllResources");
+	resource_list->connect("about_to_popup", callable_mp(this, &SceneTreeDock::_list_all_subresources).bind(resource_list));
+	resource_list->connect("index_pressed", callable_mp(this, &SceneTreeDock::_edit_subresource).bind(resource_list));
+	tree_menu->add_child(resource_list);
+	tree_menu->add_submenu_item(TTR("All Scene Sub-Resources"), "AllResources");
 }
 
 void SceneTreeDock::_update_filter_menu() {
@@ -3481,6 +3487,88 @@ void SceneTreeDock::_create_remap_for_resource(Ref<Resource> p_resource, HashMap
 	}
 }
 
+void SceneTreeDock::_list_all_subresources(PopupMenu *p_menu) {
+	p_menu->clear();
+
+	List<Pair<Ref<Resource>, Node *>> all_resources;
+	if (edited_scene) {
+		_gather_resources(edited_scene, all_resources);
+	}
+
+	HashMap<String, List<Pair<Ref<Resource>, Node *>>> resources_by_type;
+	HashMap<Ref<Resource>, int> unique_resources;
+
+	for (const Pair<Ref<Resource>, Node *> &pair : all_resources) {
+		if (!unique_resources.has(pair.first)) {
+			resources_by_type[pair.first->get_class()].push_back(pair);
+		}
+		unique_resources[pair.first]++;
+	}
+
+	for (KeyValue<String, List<Pair<Ref<Resource>, Node *>>> kv : resources_by_type) {
+		p_menu->add_icon_item(EditorNode::get_singleton()->get_class_icon(kv.key), kv.key);
+		p_menu->set_item_as_separator(-1, true);
+
+		for (const Pair<Ref<Resource>, Node *> &pair : kv.value) {
+			String display_text;
+			if (pair.first->get_name().is_empty()) {
+				display_text = vformat(TTR("<Unnamed> at %s"), pair.second->get_name());
+			} else {
+				display_text = pair.first->get_name();
+			}
+
+			if (unique_resources[pair.first] > 1) {
+				display_text += " " + vformat(TTR("(used %d times)"), unique_resources[pair.first]);
+			}
+
+			p_menu->add_item(display_text);
+			p_menu->set_item_metadata(-1, pair.first->get_instance_id());
+		}
+	}
+}
+
+void SceneTreeDock::_gather_resources(Node *p_node, List<Pair<Ref<Resource>, Node *>> &r_resources) {
+	if (p_node != edited_scene && p_node->get_owner() != edited_scene) {
+		return;
+	}
+
+	List<PropertyInfo> pinfo;
+	p_node->get_property_list(&pinfo);
+	for (const PropertyInfo &E : pinfo) {
+		if (!(E.usage & PROPERTY_USAGE_EDITOR)) {
+			continue;
+		}
+		if (E.hint != PROPERTY_HINT_RESOURCE_TYPE) {
+			continue;
+		}
+
+		Variant value = p_node->get(E.name);
+		if (value.get_type() != Variant::OBJECT) {
+			continue;
+		}
+		Ref<Resource> res = value;
+		if (res.is_null()) {
+			continue;
+		}
+
+		const Pair<Ref<Resource>, Node *> pair(res, p_node);
+		r_resources.push_back(pair);
+	}
+
+	for (int i = 0; i < p_node->get_child_count(); i++) {
+		_gather_resources(p_node->get_child(i), r_resources);
+	}
+}
+
+void SceneTreeDock::_edit_subresource(int p_idx, const PopupMenu *p_from_menu) {
+	const ObjectID &id = p_from_menu->get_item_metadata(p_idx);
+
+	Object *obj = ObjectDB::get_instance(id);
+	ERR_FAIL_COND(!obj);
+
+	_push_item(obj);
+}
+
 void SceneTreeDock::_bind_methods() {
 	ClassDB::bind_method(D_METHOD("_set_owners"), &SceneTreeDock::_set_owners);
 
diff --git a/editor/scene_tree_dock.h b/editor/scene_tree_dock.h
index 961ae06da56..52a7d6d6c1c 100644
--- a/editor/scene_tree_dock.h
+++ b/editor/scene_tree_dock.h
@@ -77,7 +77,6 @@ class SceneTreeDock : public VBoxContainer {
 		TOOL_MULTI_EDIT,
 		TOOL_ERASE,
 		TOOL_COPY_NODE_PATH,
-		TOOL_BUTTON_MAX,
 		TOOL_OPEN_DOCUMENTATION,
 		TOOL_AUTO_EXPAND,
 		TOOL_SCENE_EDITABLE_CHILDREN,
@@ -267,6 +266,10 @@ class SceneTreeDock : public VBoxContainer {
 	void _create_remap_for_node(Node *p_node, HashMap<Ref<Resource>, Ref<Resource>> &r_remap);
 	void _create_remap_for_resource(Ref<Resource> p_resource, HashMap<Ref<Resource>, Ref<Resource>> &r_remap);
 
+	void _list_all_subresources(PopupMenu *p_menu);
+	void _gather_resources(Node *p_node, List<Pair<Ref<Resource>, Node *>> &r_resources);
+	void _edit_subresource(int p_idx, const PopupMenu *p_from_menu);
+
 	bool profile_allow_editing = true;
 	bool profile_allow_script_editing = true;