Improvements to multi-node editing

- Show revert button for properties that are not default for all selected nodes
- Show property documentation tooltips
- Show common class name and icon and number of selected nodes in EditorPath, e.g. "Node2D (4 Selected)"
- Hide metadata for MultiNodeEdit and AnimationMultiTrackKeyEdit
- Hide script for MultiNodeEdit

editor/multi_node_edit.cpp

@@ -46,7 +46,7 @@ bool MultiNodeEdit::_set_impl(const StringName &p_name, const Variant &p_value,
 
 	String name = p_name;
 
-	if (name == "scripts") { // script set is intercepted at object level (check Variant Object::get() ) ,so use a different name
+	if (name == "scripts") { // Script set is intercepted at object level (check Variant Object::get()), so use a different name.
 		name = "script";
 	}
 
@@ -57,13 +57,9 @@ bool MultiNodeEdit::_set_impl(const StringName &p_name, const Variant &p_value,
 
 	Ref<EditorUndoRedoManager> &ur = EditorNode::get_undo_redo();
 
-	ur->create_action(TTR("MultiNode Set") + " " + String(name), UndoRedo::MERGE_ENDS);
+	ur->create_action(vformat(TTR("Set %s on %d nodes"), name, get_node_count()), UndoRedo::MERGE_ENDS);
 	for (const NodePath &E : nodes) {
-		if (!es->has_node(E)) {
-			continue;
-		}
-
-		Node *n = es->get_node(E);
+		Node *n = es->get_node_or_null(E);
 		if (!n) {
 			continue;
 		}
@@ -100,16 +96,12 @@ bool MultiNodeEdit::_get(const StringName &p_name, Variant &r_ret) const {
 	}
 
 	String name = p_name;
-	if (name == "scripts") { // script set is intercepted at object level (check Variant Object::get() ) ,so use a different name
+	if (name == "scripts") { // Script set is intercepted at object level (check Variant Object::get()), so use a different name.
 		name = "script";
 	}
 
 	for (const NodePath &E : nodes) {
-		if (!es->has_node(E)) {
-			continue;
-		}
-
-		const Node *n = es->get_node(E);
+		const Node *n = es->get_node_or_null(E);
 		if (!n) {
 			continue;
 		}
@@ -137,11 +129,7 @@ void MultiNodeEdit::_get_property_list(List<PropertyInfo> *p_list) const {
 	List<PLData *> data_list;
 
 	for (const NodePath &E : nodes) {
-		if (!es->has_node(E)) {
-			continue;
-		}
-
-		Node *n = es->get_node(E);
+		Node *n = es->get_node_or_null(E);
 		if (!n) {
 			continue;
 		}
@@ -151,7 +139,7 @@ void MultiNodeEdit::_get_property_list(List<PropertyInfo> *p_list) const {
 
 		for (const PropertyInfo &F : plist) {
 			if (F.name == "script") {
-				continue; //added later manually, since this is intercepted before being set (check Variant Object::get() )
+				continue; // Added later manually, since this is intercepted before being set (check Variant Object::get()).
 			}
 			if (!usage.has(F.name)) {
 				PLData pld;
@@ -161,7 +149,7 @@ void MultiNodeEdit::_get_property_list(List<PropertyInfo> *p_list) const {
 				data_list.push_back(usage.getptr(F.name));
 			}
 
-			// Make sure only properties with the same exact PropertyInfo data will appear
+			// Make sure only properties with the same exact PropertyInfo data will appear.
 			if (usage[F.name].info == F) {
 				usage[F.name].uses++;
 			}
@@ -179,6 +167,66 @@ void MultiNodeEdit::_get_property_list(List<PropertyInfo> *p_list) const {
 	p_list->push_back(PropertyInfo(Variant::OBJECT, "scripts", PROPERTY_HINT_RESOURCE_TYPE, "Script"));
 }
 
+String MultiNodeEdit::_get_editor_name() const {
+	return vformat(TTR("%s (%d Selected)"), get_edited_class_name(), get_node_count());
+}
+
+bool MultiNodeEdit::_property_can_revert(const StringName &p_name) const {
+	Node *es = EditorNode::get_singleton()->get_edited_scene();
+	if (!es) {
+		return false;
+	}
+
+	if (ClassDB::has_property(get_edited_class_name(), p_name)) {
+		StringName class_name;
+		for (const NodePath &E : nodes) {
+			Node *node = es->get_node_or_null(E);
+			if (!node) {
+				continue;
+			}
+
+			class_name = node->get_class_name();
+		}
+
+		Variant default_value = ClassDB::class_get_default_property_value(class_name, p_name);
+		for (const NodePath &E : nodes) {
+			Node *node = es->get_node_or_null(E);
+			if (!node) {
+				continue;
+			}
+
+			if (node->get(p_name) != default_value) {
+				// A node that doesn't have the default value has been found, so show the revert button.
+				return true;
+			}
+		}
+
+		return false;
+	}
+
+	// Don't show the revert button if the edited class doesn't have the property.
+	return false;
+}
+
+bool MultiNodeEdit::_property_get_revert(const StringName &p_name, Variant &r_property) const {
+	Node *es = EditorNode::get_singleton()->get_edited_scene();
+	if (!es) {
+		return false;
+	}
+
+	for (const NodePath &E : nodes) {
+		Node *node = es->get_node_or_null(E);
+		if (!node) {
+			continue;
+		}
+
+		r_property = ClassDB::class_get_default_property_value(node->get_class_name(), p_name);
+		return true;
+	}
+
+	return false;
+}
+
 void MultiNodeEdit::add_node(const NodePath &p_node) {
 	nodes.push_back(p_node);
 }
@@ -192,9 +240,69 @@ NodePath MultiNodeEdit::get_node(int p_index) const {
 	return nodes[p_index];
 }
 
+StringName MultiNodeEdit::get_edited_class_name() const {
+	Node *es = EditorNode::get_singleton()->get_edited_scene();
+	if (!es) {
+		return SNAME("Node");
+	}
+
+	// Get the class name of the first node.
+	StringName class_name;
+	for (const NodePath &E : nodes) {
+		Node *node = es->get_node_or_null(E);
+		if (!node) {
+			continue;
+		}
+
+		class_name = node->get_class_name();
+		break;
+	}
+
+	if (class_name == StringName()) {
+		return SNAME("Node");
+	}
+
+	bool check_again = true;
+	while (check_again) {
+		check_again = false;
+
+		if (class_name == SNAME("Node") || class_name == StringName()) {
+			// All nodes inherit from Node, so no need to continue checking.
+			return SNAME("Node");
+		}
+
+		// Check that all nodes inherit from class_name.
+		for (const NodePath &E : nodes) {
+			Node *node = es->get_node_or_null(E);
+			if (!node) {
+				continue;
+			}
+
+			const StringName node_class_name = node->get_class_name();
+			if (class_name == node_class_name || ClassDB::is_parent_class(node_class_name, class_name)) {
+				// class_name is the same or a parent of the node's class.
+				continue;
+			}
+
+			// class_name is not a parent of the node's class, so check again with the parent class.
+			class_name = ClassDB::get_parent_class(class_name);
+			check_again = true;
+			break;
+		}
+	}
+
+	return class_name;
+}
+
 void MultiNodeEdit::set_property_field(const StringName &p_property, const Variant &p_value, const String &p_field) {
 	_set_impl(p_property, p_value, p_field);
 }
 
+void MultiNodeEdit::_bind_methods() {
+	ClassDB::bind_method("_hide_script_from_inspector", &MultiNodeEdit::_hide_script_from_inspector);
+	ClassDB::bind_method("_hide_metadata_from_inspector", &MultiNodeEdit::_hide_metadata_from_inspector);
+	ClassDB::bind_method("_get_editor_name", &MultiNodeEdit::_get_editor_name);
+}
+
 MultiNodeEdit::MultiNodeEdit() {
 }