library groups (#151)

~~cl0ses #51~~
~~cl0ses #93~~
~~cl0ses #98~~
~~cl0ses #150~~

another change in this PR: the Deck and DeckNode classes now use manual memory management.

Reviewed-on: https://codeberg.org/StreamGraph/StreamGraph/pulls/151
Co-authored-by: Lera Elvoé <yagich@poto.cafe>
Co-committed-by: Lera Elvoé <yagich@poto.cafe>

.gitignore

@@ -3,3 +3,6 @@
 
 # distribution folder
 dist/*/
+
+# vscode folder
+.vscode/

classes/deck/deck.gd

@@ -1,6 +1,7 @@
 # (c) 2023-present Eroax
 # (c) 2023-present Yagich
 # GNU General Public License v3.0+ (see COPYING or https://www.gnu.org/licenses/gpl-3.0.txt)
+extends Object
 class_name Deck
 ## A deck/graph with nodes.
 ##
@@ -19,7 +20,20 @@ var save_path: String = ""
 ## The connections graph.
 var connections := NodeConnections.new()
 
+## Whether this deck is a group instance.
 var is_group: bool = false
+## Whether this deck is a library. Implies [member is_group].
+var is_library: bool = false
+
+#region library group props
+## The initial name of the library. Displayed by the group node and [SearchProvider].
+var lib_name: String
+## The description of this library, shown to the user by a renderer.
+var lib_description: String
+## A list of aliases for this library, used by search.
+var lib_aliases: Array[String]
+#endregion
+
 ## List of groups belonging to this deck, in the format of[br]
 ## [code]Dictionary[String -> Deck.id, Deck][/code]
 #var groups: Dictionary = {}
@@ -52,6 +66,8 @@ signal nodes_connected(from_node_id: String, to_node_id: String, from_output_por
 signal nodes_disconnected(from_node_id: String, to_node_id: String, from_output_port: int, to_input_port: int)
 ## Emitted when the [member variable_stack] has been modified.
 signal variables_updated()
+## Emitted when a node has been moved to a different deck.
+signal node_moved_to_deck(node: DeckNode, other: Deck)
 
 #region group signals
 signal node_added_to_group(node: DeckNode, assign_id: String, assign_to_self: bool, deck: Deck)
@@ -88,6 +104,7 @@ func add_node_type(type: String, assign_id: String = "", assign_to_self: bool =
 func add_node_inst(node: DeckNode, assign_id: String = "", assign_to_self: bool = true) -> DeckNode:
 	if assign_to_self:
 		node._belonging_to = self
+		#node._belonging_to_instance = instance_id
 
 	if assign_id == "":
 		var uuid := UUID.v4()
@@ -122,10 +139,37 @@ func add_node_inst(node: DeckNode, assign_id: String = "", assign_to_self: bool
 	)
 	
 	node.connect_rpc_signals()
+	print_verbose("Deck %s::%s: added node %s, id %s" % [id, instance_id, node.node_type, node.get_instance_id()])
 
 	return node
 
 
+func add_lib_group_node(type: String) -> DeckNode:
+	var group_node := add_node_type("group_node")
+	var lib := DeckHolder.add_lib_instance(type, id)
+	group_node.is_library = true
+	group_node.group_id = lib.id
+	group_node.group_instance_id = lib.instance_id
+	
+	for node_id: String in lib.nodes:
+		var node := lib.get_node(node_id)
+		if node.node_type == "group_input":
+			group_node.input_node = node
+			group_node.input_node_id = node._id
+			node.group_node = group_node
+			lib.group_input_node = node._id
+			continue
+		
+		if node.node_type == "group_output":
+			group_node.output_node = node
+			group_node.output_node_id = node._id
+			node.group_node = group_node
+			lib.group_output_node = node._id
+			continue
+	group_node.init_io()
+	return group_node
+
+
 ## Get a node belonging to this deck by its' ID.
 func get_node(uuid: String) -> DeckNode:
 	return nodes.get(uuid)
@@ -194,6 +238,21 @@ func disconnect_nodes(from_node_id: String, to_node_id: String, from_output_port
 	to_node.incoming_connection_removed.emit(to_input_port)
 
 
+func disconnect_pair(pair: ConnectionPair) -> void:
+	connections.remove_pair(pair)
+	var from_node_id := pair.incoming.from_node
+	var to_node_id := pair.outgoing.to_node
+	var from_output_port := pair.incoming.from_port
+	var to_input_port := pair.outgoing.to_port
+	connections.remove_connection(from_node_id, to_node_id, from_output_port, to_input_port)
+	nodes_disconnected.emit(from_node_id, to_node_id, from_output_port, to_input_port)
+	
+	var from_node := get_node(from_node_id)
+	var to_node := get_node(to_node_id)
+	from_node.outgoing_connection_removed.emit(from_output_port)
+	to_node.incoming_connection_removed.emit(to_input_port)
+
+
 ## Returns true if this deck has no nodes and no variables.
 func is_empty() -> bool:
 	return nodes.is_empty() and variable_stack.is_empty()
@@ -212,16 +271,19 @@ func remove_node(uuid: String, remove_connections: bool = false, force: bool = f
 		DeckHolder.close_group_instance(node.group_id, node.group_instance_id)
 
 	if remove_connections:
-		var outgoing_connections := connections.get_all_outgoing_connections(uuid)
+		# var outgoing_connections := connections.get_all_outgoing_connections(uuid)
-		for from_port: int in outgoing_connections:
+		# for from_port: int in outgoing_connections.keys():
-			for outgoing: OutgoingConnection in outgoing_connections[from_port]:
+		# 	for outgoing: OutgoingConnection in outgoing_connections[from_port]:
-				var incoming := outgoing.counterpart.get_ref() as IncomingConnection
+		# 		var incoming := outgoing.counterpart.get_ref() as IncomingConnection
-				disconnect_nodes(uuid, outgoing.to_node, incoming.from_port, outgoing.to_port)
+		# 		disconnect_nodes(uuid, outgoing.to_node, incoming.from_port, outgoing.to_port)
 		
-		var incoming_connections := connections.get_all_incoming_connections(uuid)
+		# var incoming_connections := connections.get_all_incoming_connections(uuid)
-		for to_port: int in incoming_connections:
+		# for to_port: int in incoming_connections.keys():
-			var incoming := connections.get_incoming_connection(uuid, to_port)
+		# 	var incoming := connections.get_incoming_connection(uuid, to_port)
-			disconnect_nodes(incoming.from_node, uuid, incoming.from_port, to_port)
+		# 	disconnect_nodes(incoming.from_node, uuid, incoming.from_port, to_port)
+		var pairs := connections.get_node_pairs(uuid)
+		for pair in pairs:
+			disconnect_pair(pair)
 		
 	nodes.erase(uuid)
 
@@ -230,6 +292,16 @@ func remove_node(uuid: String, remove_connections: bool = false, force: bool = f
 	if is_group and emit_group_signals:
 		node_removed_from_group.emit(uuid, remove_connections, self)
 	
+	print_verbose("Deck %s::%s: freeing node %s, id %s" % [id, instance_id, node.node_type, node.get_instance_id()])
+	node.free()
+
+
+func pre_exit_cleanup() -> void:
+	for node_id: String in nodes:
+		var node := get_node(node_id)
+		print_verbose("Deck %s::%s: freeing node %s, id %s" % [id, instance_id, node.node_type, node.get_instance_id()])
+		node.free()
+
 
 ## Set a variable on this deck.
 func set_variable(var_name: String, value: Variant) -> void:
@@ -275,47 +347,20 @@ func group_nodes(nodes_to_group: Array) -> Deck:
 	var rightmost := -INF
 	var leftmost := INF
 	for node: DeckNode in nodes_to_group:
-		#if node.node_type == "group_node":
-			#var _group_id: String = node.group_id
-			#var _group: Deck = groups[_group_id]
-			#groups.erase(_group)
-			#group.groups[_group_id] = _group
-			#_group._belonging_to = group
 
 		if node.position.x > rightmost:
 			rightmost = node.position.x
 		if node.position.x < leftmost:
 			leftmost = node.position.x
 
-		#var outgoing_connections := node.outgoing_connections.duplicate(true)
+		var pairs := connections.get_node_pairs(node._id)
-#
+		for pair in pairs:
-		#for from_port: int in outgoing_connections:
+			disconnect_pair(pair)
-			#for to_node: String in outgoing_connections[from_port]:
-				#for to_port: int in outgoing_connections[from_port][to_node]:
-					#if to_node not in node_ids_to_keep:
-						#disconnect_nodes(node._id, to_node, from_port, to_port)
-
-		var outgoing_connections := connections.get_all_outgoing_connections(node._id)
-		for from_port: int in outgoing_connections:
-			for outgoing: OutgoingConnection in outgoing_connections[from_port]:
-				var incoming := outgoing.counterpart.get_ref() as IncomingConnection
-				disconnect_nodes(node._id, outgoing.to_node, incoming.from_port, outgoing.to_port)
-
-		#var incoming_connections := node.incoming_connections.duplicate(true)
-#
-		#for to_port: int in incoming_connections:
-			#for from_node: String in incoming_connections[to_port]:
-				#if from_node not in node_ids_to_keep:
-					#disconnect_nodes(from_node, node._id, incoming_connections[to_port][from_node], to_port)
-		
-		var incoming_connections := connections.get_all_incoming_connections(node._id)
-		for to_port: int in incoming_connections:
-			var incoming := connections.get_incoming_connection(node._id, to_port)
-			disconnect_nodes(incoming.from_node, node._id, incoming.from_port, to_port)
 
 		midpoint += node.position_as_vector2()
-		remove_node(node._id, false, true)
+		# remove_node(node._id, false, true)
-		group.add_node_inst(node, node._id)
+		# group.add_node_inst(node, node._id)
+		move_node_to_deck(node, group)
 
 	midpoint /= nodes_to_group.size()
 
@@ -353,9 +398,23 @@ func group_nodes(nodes_to_group: Array) -> Deck:
 	return group
 
 
-## Get a group belonging to this deck by its ID.
+func move_node_to_deck(node: DeckNode, other: Deck) -> void:
-#func get_group(uuid: String) -> Deck:
+	if not node._id in nodes:
-	#return groups.get(uuid)
+		return
+	
+	nodes.erase(node._id)
+	other.nodes[node._id] = node
+	# node_moved_to_deck.emit(node, other)
+	
+	node._belonging_to = other
+	
+	node_removed.emit(node)
+	other.node_added.emit(node)
+	
+	if is_group and emit_group_signals:
+		node_removed_from_group.emit(node._id, false, self)
+	if other.is_group and other.emit_group_signals:
+		node_added_to_group.emit(node, node._id, true, other)
 
 
 func copy_nodes(nodes_to_copy: Array[String]) -> Dictionary:
@@ -367,38 +426,6 @@ func copy_nodes(nodes_to_copy: Array[String]) -> Dictionary:
 	for node_id: String in nodes_to_copy:
 		d.nodes[node_id] = get_node(node_id).to_dict()
 
-	#for node: String in d.nodes:
-		#var outgoing_connections: Dictionary = d.nodes[node].outgoing_connections.duplicate(true)
-#
-		#for from_port: int in outgoing_connections:
-			#for to_node: String in outgoing_connections[from_port]:
-				#if to_node not in nodes_to_copy:
-					#(d.nodes[node].outgoing_connections[from_port] as Dictionary).erase(to_node)
-#
-		#var keys_to_erase := []
-		#for from_port: int in d.nodes[node].outgoing_connections:
-			#if (d.nodes[node].outgoing_connections[from_port] as Dictionary).is_empty():
-				#keys_to_erase.append(from_port)
-#
-		#for key in keys_to_erase:
-			#(d.nodes[node].outgoing_connections as Dictionary).erase(key)
-#
-		#var incoming_connections: Dictionary = d.nodes[node].incoming_connections.duplicate(true)
-#
-		#for to_port: int in incoming_connections:
-			#for from_node: String in incoming_connections[to_port]:
-				#if from_node not in nodes_to_copy:
-					#(d.nodes[node].incoming_connections[to_port] as Dictionary).erase(from_node)
-		#
-		#keys_to_erase.clear()
-		#for to_port: int in d.nodes[node].incoming_connections:
-			#if (d.nodes[node].incoming_connections[to_port] as Dictionary).is_empty():
-				#keys_to_erase.append(to_port)
-#
-		#for key in keys_to_erase:
-			#(d.nodes[node].incoming_connections as Dictionary).erase(key)
-		#keys_to_erase.clear()
-
 	for node: Dictionary in d.nodes.values().slice(1):
 		node.position.x = node.position.x - d.nodes.values()[0].position.x
 		node.position.y = node.position.y - d.nodes.values()[0].position.y
@@ -456,15 +483,37 @@ func paste_nodes_from_dict(nodes_to_paste: Dictionary, position: Vector2 = Vecto
 		var node := DeckNode.from_dict(nodes_to_paste.nodes[node_id])
 		var group_needs_unique := false
 		if node.node_type == "group_node":
-			var group := DeckHolder.make_new_group_instance(node.group_id, id)
+			if not node.is_library:
-			var old_group := DeckHolder.get_group_instance(node.group_id, node.group_instance_id)
+				var group := DeckHolder.make_new_group_instance(node.group_id, id)
-			group_needs_unique = old_group._belonging_to != id
+				var old_group := DeckHolder.get_group_instance(node.group_id, node.group_instance_id)
-			node.group_instance_id = group.instance_id
+				group_needs_unique = old_group._belonging_to != id
-			group.get_node(group.group_input_node).group_node = node
+				node.group_instance_id = group.instance_id
-			group.get_node(group.group_output_node).group_node = node
+				group.get_node(group.group_input_node).group_node = node
-			node.input_node = group.get_node(group.group_input_node)
+				group.get_node(group.group_output_node).group_node = node
-			node.output_node = group.get_node(group.group_output_node)
+				node.input_node = group.get_node(group.group_input_node)
-			node.init_io()
+				node.output_node = group.get_node(group.group_output_node)
+				node.init_io()
+			else:
+				var type: String = node.group_id.get_file().trim_suffix(".deck")
+				var lib := DeckHolder.add_lib_instance(type, id)
+				node.group_instance_id = lib.instance_id
+				for l_node_id: String in lib.nodes:
+					var l_node := lib.get_node(l_node_id)
+					if l_node.node_type == "group_input":
+						node.input_node = l_node
+						node.input_node_id = l_node._id
+						l_node.group_node = node
+						lib.group_input_node = l_node_id
+						continue
+					
+					if l_node.node_type == "group_output":
+						node.output_node = l_node
+						node.output_node_id = l_node._id
+						l_node.group_node = node
+						lib.group_output_node = l_node_id
+						continue
+				node.init_io()
+				
 		add_node_inst(node, ids_map[node_id])
 		if group_needs_unique:
 			node.make_unique()
@@ -522,10 +571,9 @@ func get_referenced_groups() -> Array[String]:
 	var res: Array[String] = []
 	for node_id: String in nodes:
 		var node := get_node(node_id)
-		if node.node_type != "group_node":
+		if node.node_type == "group_node" and not node.is_library:
-			continue
+			res.append(node.group_id)
-		res.append(node.group_id)
+			res.append_array(DeckHolder.get_deck(node.group_id).get_referenced_groups())
-		res.append_array(DeckHolder.get_deck(node.group_id).get_referenced_groups())
 	return res
 
 
@@ -533,15 +581,14 @@ func get_referenced_group_instances() -> Array[Dictionary]:
 	var res: Array[Dictionary] = []
 	for node_id: String in nodes:
 		var node := get_node(node_id)
-		if node.node_type != "group_node":
+		if node.node_type == "group_node" and not node.is_library:
-			continue
+			res.append({
-		res.append({
+				"group_id": node.group_id,
-			"group_id": node.group_id,
+				"instance_id": node.group_instance_id,
-			"instance_id": node.group_instance_id,
+				"parent_id": node._belonging_to,
-			"parent_id": node._belonging_to.id,
+				"group_node": node_id,
-			"group_node": node_id,
+			})
-		})
+			res.append_array(DeckHolder.get_group_instance(node.group_id, node.group_instance_id).get_referenced_group_instances())
-		res.append_array(DeckHolder.get_group_instance(node.group_id, node.group_instance_id).get_referenced_group_instances())
 	return res
 
 
@@ -564,7 +611,7 @@ func to_dict(with_meta: bool = true, group_ids: Array = []) -> Dictionary:
 
 	for node_id: String in nodes.keys():
 		inner["nodes"][node_id] = nodes[node_id].to_dict(with_meta)
-		if (nodes[node_id] as DeckNode).node_type == "group_node":
+		if get_node(node_id).node_type == "group_node" and not get_node(node_id).is_library:
 			if nodes[node_id].group_id not in group_ids:
 				inner["groups"][nodes[node_id].group_id] = DeckHolder.get_deck(nodes[node_id].group_id).to_dict(with_meta, group_ids)
 				group_ids.append(nodes[node_id].group_id)
@@ -577,6 +624,15 @@ func to_dict(with_meta: bool = true, group_ids: Array = []) -> Dictionary:
 		inner["group_input_node"] = group_input_node
 		inner["group_output_node"] = group_output_node
 
+	# don't save library stuff if this is not a library
+	if not lib_name.is_empty():
+		var lib := {
+			"lib_name": lib_name,
+			"lib_description": lib_description,
+			"lib_aliases": lib_aliases,
+		}
+		inner["library"] = lib
+
 	var d := {"deck": inner}
 
 	if with_meta:
@@ -594,6 +650,12 @@ static func from_dict(data: Dictionary, path: String = "") -> Deck:
 	deck.id = data.deck.id
 	deck.connections = NodeConnections.from_dict(data.deck.connections)
 
+	if data.deck.has("library"):
+		var lib_data: Dictionary = data.deck.library
+		deck.lib_name = lib_data.get("lib_name", "")
+		deck.lib_description = lib_data.get("lib_description", "")
+		# deck.lib_aliases = lib_data.get("lib_aliases", [])
+
 	for key in data.meta:
 		deck.set_meta(key, str_to_var(data.meta[key]))
 
@@ -611,23 +673,30 @@ static func from_dict(data: Dictionary, path: String = "") -> Deck:
 			continue
 		var group_id: String = node.group_id
 		var group_instance_id: String = node.group_instance_id
-		var group_data: Dictionary = groups_data[group_id]
+		var group: Deck
-		var group := DeckHolder.add_group_from_dict(group_data, group_id, group_instance_id, deck.id)
+		if not node.is_library:
-		group.get_node(group.group_input_node).group_node = node
+			var group_data: Dictionary = groups_data[group_id]
-		group.get_node(group.group_output_node).group_node = node
+			group = DeckHolder.add_group_from_dict(group_data, group_id, group_instance_id, deck.id)
+			group.get_node(node.input_node_id).group_node = node
+			group.get_node(node.output_node_id).group_node = node
+		else:
+			group = DeckHolder.add_lib_instance(
+				node.group_id.get_file().trim_suffix(".deck"),
+				deck.id,
+				node.group_instance_id
+			)
+			for io_node_id: String in deck.nodes:
+				var io_node := deck.get_node(io_node_id)
+				if io_node.node_type == "group_input":
+					node.input_node_id = io_node._id
+					io_node.group_node = node
+					continue
+				if io_node.node_type == "group_output":
+					node.output_node_id = io_node._id
+					io_node.group_node = node
+					continue
 		node.init_io()
 
-	#for group_id: String in groups_data:
-		#var group := Deck.from_dict(groups_data[group_id])
-		#group._belonging_to = deck
-		#group.is_group = true
-		#deck.groups[group_id] = group
-		#group.group_node = groups_data[group_id]["deck"]["group_node"]
-		#group.group_input_node = groups_data[group_id]["deck"]["group_input_node"]
-		#group.group_output_node = groups_data[group_id]["deck"]["group_output_node"]
-		#deck.get_node(group.group_node).init_io()
-
-
 	return deck
 
 
@@ -671,6 +740,16 @@ class NodeConnections:
 				out_list.erase(out)
 				break
 		
+		# remove if empty
+		if data[from_node_id] == _create_empty_connection():
+			data.erase(from_node_id)
+		
+		if data[to_node_id] == _create_empty_connection():
+			data.erase(to_node_id)
+		
+		if (data[from_node_id].outgoing[from_output_port] as Array).is_empty():
+			(data[from_node_id].outgoing as Dictionary).erase(from_output_port)
+	
 	
 	func has_incoming_connection(node_id: String, on_port: int) -> bool:
 		return data.get(node_id, _create_empty_connection()).incoming.has(on_port)
@@ -699,6 +778,9 @@ class NodeConnections:
 		if data.get(node_id, _create_empty_connection()).outgoing.is_empty():
 			return []
 		
+		if not (data[node_id].outgoing as Dictionary).has(from_port):
+			return []
+		
 		var res: Array[OutgoingConnection] = []
 		
 		res.assign(data[node_id].outgoing[from_port])
@@ -727,12 +809,32 @@ class NodeConnections:
 		return res
 	
 	
+	func get_node_pairs(node: String) -> Array[ConnectionPair]:
+		var res: Array[ConnectionPair] = []
+		
+		var connections: Dictionary = data.get(node, _create_empty_connection())
+		for to_port: int in connections.outgoing:
+			for outgoing: OutgoingConnection in connections.outgoing[to_port]:
+				res.append(ConnectionPair.from_outgoing(outgoing))
+		for from_port: int in connections.incoming:
+			res.append(ConnectionPair.from_incoming(connections.incoming[from_port]))
+		
+		return res
+
+	
+	
 	func add_pair(pair: ConnectionPair) -> void:
 		var outgoing := pair.outgoing
 		var incoming := pair.incoming
 		add_connection(incoming.from_node, outgoing.to_node, incoming.from_port, outgoing.to_port)
 	
 	
+	func remove_pair(pair: ConnectionPair) -> void:
+		var outgoing := pair.outgoing
+		var incoming := pair.incoming
+		remove_connection(incoming.from_node, outgoing.to_node, incoming.from_port, outgoing.to_port)
+	
+	
 	func _create_empty_connection() -> Dictionary:
 		return {
 			"incoming": {},

classes/deck/deck_holder.gd

@@ -9,6 +9,9 @@ class_name DeckHolder
 #static var decks: Array[Deck]
 static var decks: Dictionary # Dictionary[String -> id, (Deck|Dictionary[String -> instance_id, Deck])]
 
+## List of library groups open this session.
+static var lib_groups: Dictionary # Dictionary[String -> path, Dictionary[String -> instance_id, Deck]]
+
 static var groups_emitted: Array[String]
 
 static var logger := Logger.new()
@@ -23,6 +26,8 @@ static func _static_init() -> void:
 	signals.deck_added.connect(RPCSignalLayer._on_deck_added)
 	signals.deck_closed.connect(RPCSignalLayer._on_deck_closed)
 	
+	NodeDB.init()
+
 
 ## Returns a new empty deck and assigns a new random ID to it.
 static func add_empty_deck() -> Deck:
@@ -32,6 +37,7 @@ static func add_empty_deck() -> Deck:
 	deck.id = uuid
 	deck.connect_rpc_signals()
 	signals.deck_added.emit(uuid)
+	print_verbose("DeckHolder: added empty deck %s, id %s" % [deck.id, deck.get_instance_id()])
 	return deck
 
 
@@ -74,6 +80,7 @@ static func open_deck_from_dict(data: Dictionary, path := "") -> Deck:
 	decks[deck.id] = deck
 	deck.connect_rpc_signals()
 	signals.deck_added.emit(deck.id)
+	print_verbose("DeckHolder: opened deck %s, id %s" % [deck.id, deck.get_instance_id()])
 	return deck
 
 
@@ -94,6 +101,7 @@ static func add_group_from_dict(data: Dictionary, deck_id: String, instance_id:
 		signals.deck_added.emit(deck_id)
 		groups_emitted.append(deck_id)
 	#print(decks)
+	print_verbose("DeckHolder: added group instance %s::%s, id %s" % [group.id, group.instance_id, group.get_instance_id()])
 	return group
 
 
@@ -144,9 +152,42 @@ static func add_empty_group(parent: String = "") -> Deck:
 		group.connect_rpc_signals()
 		signals.deck_added.emit(group.id)
 		groups_emitted.append(group.id)
+	print_verbose("DeckHolder: added empty group %s::%s, id %s" % [group.id, group.instance_id, group.get_instance_id()])
 	return group
 
 
+static func add_lib_instance(type: String, to_deck: String, instance_id: String = UUID.v4()) -> Deck:
+	var nd: NodeDB.NodeDescriptor = NodeDB.libraries[type]
+	var path := nd.script_path
+	var deck_data: Dictionary
+	if lib_groups.has(path):
+		deck_data = (lib_groups[path].values()[0] as Deck).to_dict()
+	else:
+		if not NodeDB.libraries.has(type):
+			return null
+
+		var f := FileAccess.open(path, FileAccess.READ)
+		if not f:
+			return null
+		
+		deck_data = JSON.parse_string(f.get_as_text())
+	
+	var instances := lib_groups.get(path, {}) as Dictionary
+	
+	var deck := Deck.from_dict(deck_data)
+	deck.id = path
+	deck.instance_id = instance_id
+	deck.is_group = true
+	deck.is_library = true
+	deck._belonging_to = to_deck
+	
+	instances[instance_id] = deck
+	lib_groups[path] = instances
+	
+	print_verbose("DeckHolder: added lib group %s::%s, id %s" % [deck.id, deck.instance_id, deck.get_instance_id()])
+	return deck
+
+
 static func connect_group_signals(group: Deck) -> void:
 	group.node_added_to_group.connect(DeckHolder._on_node_added_to_group)
 	group.node_removed_from_group.connect(DeckHolder._on_node_removed_from_group)
@@ -157,7 +198,7 @@ static func connect_group_signals(group: Deck) -> void:
 
 static func get_deck(id: String) -> Deck:
 	if not decks.has(id):
-		return null
+		return get_lib(id)
 
 	if not decks[id] is Dictionary:
 		return decks[id]
@@ -165,9 +206,16 @@ static func get_deck(id: String) -> Deck:
 		return (decks[id] as Dictionary).values()[0]
 
 
+static func get_lib(path: String) -> Deck:
+	if not lib_groups.has(path):
+		return null
+	
+	return (lib_groups[path] as Dictionary).values()[0]
+
+
 static func get_group_instance(group_id: String, instance_id: String) -> Deck:
 	if not decks.has(group_id):
-		return null
+		return get_lib_instance(group_id, instance_id)
 
 	if decks[group_id] is Dictionary:
 		return (decks[group_id] as Dictionary).get(instance_id)
@@ -175,25 +223,41 @@ static func get_group_instance(group_id: String, instance_id: String) -> Deck:
 		return null
 
 
+static func get_lib_instance(path: String, instance_id: String) -> Deck:
+	if not lib_groups.has(path):
+		return null
+	
+	return (lib_groups[path] as Dictionary).get(instance_id, null)
+
+
 static func close_group_instance(group_id: String, instance_id: String) -> void:
 	# this is kinda dumb, but to close groups that may be dangling
 	# when all instances are closed, we have to get that list
 	# *before* we close the instance
 	var dangling_groups := get_deck(group_id).get_referenced_groups()
-	
+	var from := lib_groups if group_id.is_absolute_path() else decks
-	var group_instances: Dictionary = decks.get(group_id, {}) as Dictionary
+	var group_instances: Dictionary = from.get(group_id, {}) as Dictionary
+	var group_inst: Deck = group_instances[instance_id]
+	print_verbose("DeckHolder: freeing group instance %s::%s, id %s" % [group_inst.id, group_inst.instance_id, group_inst.get_instance_id()])
+	group_inst.pre_exit_cleanup()
+	group_inst.free()
 	group_instances.erase(instance_id)
 	if group_instances.is_empty():
 		for group in dangling_groups:
 			close_all_group_instances(group)
 		signals.deck_closed.emit(group_id)
 		groups_emitted.erase(group_id)
-		decks.erase(group_id)
+		from.erase(group_id)
 
 
 static func close_all_group_instances(group_id: String) -> void:
-	if decks.get(group_id) is Dictionary:
+	var from := lib_groups if group_id.is_absolute_path() else decks
-		decks.erase(group_id)
+	if from.get(group_id) is Dictionary:
+		for instance_id: String in from[group_id]:
+			print_verbose("DeckHolder: freeing group instance %s::%s, id %s" % [group_id, instance_id, from[group_id][instance_id].get_instance_id()])
+			from[group_id][instance_id].pre_exit_cleanup()
+			from[group_id][instance_id].free()
+		from.erase(group_id)
 
 
 ## Unloads a deck. Returns a list of groups that are closed as a result of
@@ -206,10 +270,35 @@ static func close_deck(deck_id: String) -> Array:
 			close_all_group_instances(group)
 		signals.deck_closed.emit(deck_id)
 		decks.erase(deck_id)
+		print_verbose("DeckHolder: freeing deck %s, id %s" % [deck.id, deck.get_instance_id()])
+		deck.pre_exit_cleanup()
+		deck.free()
 		return groups
 	return []
 
 
+static func pre_exit_cleanup() -> void:
+	for deck_id: String in decks:
+		if decks[deck_id] is Deck:
+			var deck: Deck = decks[deck_id]
+			print_verbose("DeckHolder: freeing deck %s, id %s" % [deck.id, deck.get_instance_id()])
+			deck.pre_exit_cleanup()
+			deck.free()
+		else:
+			for instance_id: String in decks[deck_id]:
+				var deck: Deck = decks[deck_id][instance_id]
+				print_verbose("DeckHolder: freeing group %s::%s, id %s" % [deck_id, instance_id, deck.get_instance_id()])
+				deck.pre_exit_cleanup()
+				deck.free()
+	
+	for lib_id: String in lib_groups:
+		for instance_id: String in lib_groups[lib_id]:
+			var deck: Deck = lib_groups[lib_id][instance_id]
+			print_verbose("DeckHolder: freeing lib group %s::%s, id %s" % [lib_id, instance_id, deck.get_instance_id()])
+			deck.pre_exit_cleanup()
+			deck.free()
+
+
 static func send_event(event_name: StringName, event_data: Dictionary = {}) -> void:
 	for deck_id: String in decks:
 		if decks[deck_id] is Deck:
@@ -218,6 +307,10 @@ static func send_event(event_name: StringName, event_data: Dictionary = {}) -> v
 			for deck_instance_id: String in decks[deck_id]:
 				(decks[deck_id][deck_instance_id] as Deck).send_event(event_name, event_data)
 	
+	for lib_group_id: String in lib_groups:
+		for lib_instance_id: String in lib_groups[lib_group_id]:
+			(lib_groups[lib_group_id][lib_instance_id] as Deck).send_event(event_name, event_data)
+
 
 #region group signal callbacks
 static func _on_node_added_to_group(node: DeckNode, assign_id: String, assign_to_self: bool, deck: Deck) -> void:

classes/deck/deck_node.gd

@@ -1,6 +1,7 @@
 # (c) 2023-present Eroax
 # (c) 2023-present Yagich
 # GNU General Public License v3.0+ (see COPYING or https://www.gnu.org/licenses/gpl-3.0.txt)
+extends Object
 class_name DeckNode
 ## A node in a [Deck].
 ##
@@ -10,14 +11,16 @@ class_name DeckNode
 ## The name initially shown to a renderer.
 var name: String
 
-
 ## A list of [Port]s on this node.
 var ports: Array[Port]
 
 var _last_send_id: String
 
-## The deck this node belongs to.
+## The [Deck] this node belongs to.
 var _belonging_to: Deck
+
+## The instance ID of the group this node belongs to, if it belongs to a group.
+#var _belonging_to_instance: String
 ## A unique identifier for this node.
 var _id: String
 ## The type of this node, used for instantiation.
@@ -63,6 +66,8 @@ signal outgoing_connection_removed(from_port: int)
 signal incoming_connection_added(from_port: int)
 ## Emitted when a connection to this node has been removed.
 signal incoming_connection_removed(from_port: int)
+## Emitted when the node is about to be freed.
+signal about_to_free()
 
 signal port_value_updated(port_idx: int, new_value: Variant)
 
@@ -233,12 +238,21 @@ func get_node(uuid: String) -> DeckNode:
 	return _belonging_to.get_node(uuid)
 
 
+## Get the deck this node belongs to.
+#func get_deck() -> Deck:
+	#if not DeckHolder.get_deck(_belonging_to).is_group:
+		#return DeckHolder.get_deck(_belonging_to)
+	#else:
+		#return DeckHolder.get_group_instance(_belonging_to, _belonging_to_instance)
+
+
 ## Virtual function that's called during deserialization before connections are loaded in.[br]
 func _pre_port_load() -> void:
 	pass
 
 
 ## Virtual function that's called after the node has been deserialized.
+@warning_ignore("unused_parameter")
 func _post_load(connections: Deck.NodeConnections) -> void:
 	pass
 
@@ -334,3 +348,8 @@ static func from_dict(data: Dictionary, connections: Deck.NodeConnections = null
 ## Returns the node's [member position] as a [Vector2].
 func position_as_vector2() -> Vector2:
 	return Vector2(position.x, position.y)
+
+
+func _notification(what: int) -> void:
+	if what == NOTIFICATION_PREDELETE:
+		about_to_free.emit()

classes/deck/logger.gd

@@ -16,6 +16,9 @@ enum LogCategory {
 	RENDERER,
 }
 
+# Dictionary["text": String, "type": LogType]
+var toast_history: Array[Dictionary]
+
 signal log_message(text: String, type: LogType, category: LogCategory)
 signal log_toast(text: String, type: LogType)
 
@@ -57,6 +60,11 @@ func toast_error(text: String) -> void:
 
 func toast(text: String, type: LogType) -> void:
 	log_toast.emit(text, type)
-	
+	toast_history.append(
+		{
+			"text": text,
+			"type": type,
+		}
+	)
 	if OS.has_feature("editor"):
 		prints("(t)", LogType.keys()[type].capitalize(), text)

classes/deck/node_db.gd

@@ -24,46 +24,105 @@ static var favorite_nodes: Array[String]
 ## The node index. Maps [member DeckNode.node_type]s to [NodeDB.NodeDescriptor].
 static var nodes: Dictionary = {}
 
+static var libraries: Dictionary = {}
 
-static func _static_init() -> void:
+
+static func init() -> void:
 	load_favorites()
 	#if load_node_index():
 		#return
 
 	create_descriptors(BASE_NODE_PATH)
 	
+	reload_libraries()
+
 	save_node_index()
 
 
 ## Fills the [member nodes] index.
 static func create_descriptors(path: String) -> void:
 	var dir := DirAccess.open(path)
+	if not dir:
+		return
 	dir.list_dir_begin()
 	var current_file := dir.get_next()
 	while current_file != "":
 		if dir.current_is_dir():
 			create_descriptors(path.path_join(current_file))
-		else:
+		elif current_file.ends_with(".gd"):
-			if current_file.ends_with(".gd"):
+			var script_path := path.path_join(current_file)
-				var script_path := path.path_join(current_file)
+			var node: DeckNode = load(script_path).new() as DeckNode
-				var node: DeckNode = load(script_path).new() as DeckNode
+			var aliases: String = node.aliases.reduce(
-				var aliases: String = node.aliases.reduce(
+				func(accum, el):
-					func(accum, el):
+					return accum + el
-						return accum + el
+			, "")
-				, "")
+			var descriptor := NodeDescriptor.new(
-				var descriptor := NodeDescriptor.new(
+				script_path,
-					script_path,
+				node.name,
-					node.name,
+				node.node_type,
-					node.node_type,
+				node.description,
-					node.description,
+				aliases,
-					aliases,
+				path.get_slice("/", path.get_slice_count("/") - 1),
-					path.get_slice("/", path.get_slice_count("/") - 1),
+				node.appears_in_search,
-					node.appears_in_search,
+				false,
-					)
+				)
-				nodes[node.node_type] = descriptor
+			nodes[node.node_type] = descriptor
+			print_verbose("NodeDB: freeing node %s, id %s" % [node.node_type, node.get_instance_id()])
+			node.free()
 		current_file = dir.get_next()
 
 
+## Fills the [member libraries] index.
+static func create_lib_descriptors(path: String) -> void:
+	var dir := DirAccess.open(path)
+	if not dir:
+		return
+	dir.list_dir_begin()
+	var current_file := dir.get_next()
+	while current_file != "":
+		if dir.current_is_dir():
+			create_lib_descriptors(path.path_join(current_file))
+		elif current_file.ends_with(".deck"):
+			var load_path := path.path_join(current_file)
+			var f := FileAccess.open(load_path, FileAccess.READ)
+			var deck: Dictionary = JSON.parse_string(f.get_as_text())
+			if not deck.deck.has("library"):
+				current_file = dir.get_next()
+				continue
+			var type := current_file.trim_suffix(".deck")
+			if nodes.has(type):
+				DeckHolder.logger.toast_error("Library group '%s' collides with a node with the same type." % type)
+				current_file = dir.get_next()
+				continue
+			if libraries.has(type):
+				DeckHolder.logger.toast_error("Library group '%s' collides with a library group with the same type." % type)
+				current_file = dir.get_next()
+				continue
+			var lib = deck.deck.library
+			var aliases: String = lib.lib_aliases.reduce(
+				func(accum, el):
+					return accum + el
+			, "")
+			var descriptor := NodeDescriptor.new(
+				load_path,
+				lib.lib_name,
+				type,
+				lib.lib_description,
+				aliases,
+				path.get_slice("/", path.get_slice_count("/") - 1),
+				true,
+				true,
+			)
+			libraries[descriptor.type] = descriptor
+		current_file = dir.get_next()
+
+
+static func reload_libraries() -> void:
+	libraries.clear()
+	for path in StreamGraphConfig.get_library_search_paths():
+		create_lib_descriptors(path)
+
+
 ## Instantiates a [DeckNode] from a given [param node_type]. See [member DeckNode.node_type].
 static func instance_node(node_type: String) -> DeckNode:
 	if not nodes.has(node_type):
@@ -137,6 +196,10 @@ static func is_node_favorite(node_type: String) -> bool:
 	return node_type in favorite_nodes
 
 
+static func is_library(type: String) -> bool:
+	return libraries.has(type)
+
+
 ## Returns a capitalized category string.
 static func get_category_capitalization(category: String) -> String:
 	return CATEGORY_CAPITALIZATION.get(category, category.capitalize())
@@ -158,6 +221,8 @@ class NodeDescriptor:
 	## Whether this [DeckNode] reference will appear when searching. See [member DeckNode.appears_in_search].
 	var appears_in_search: bool
 	
+	var is_library: bool
+
 	## Stores the path to this node's script for later instantiation.
 	var script_path: String
 
@@ -169,6 +234,7 @@ class NodeDescriptor:
 			p_aliases: String,
 			p_category: String,
 			p_appears_in_search: bool,
+			p_is_library: bool,
 		) -> void:
 			script_path = p_script_path
 
@@ -178,6 +244,7 @@ class NodeDescriptor:
 			aliases = p_aliases
 			category = p_category
 			appears_in_search = p_appears_in_search
+			is_library = p_is_library
 
 
 	## Returns a [Dictionary] representation of this node descriptor.
@@ -190,6 +257,7 @@ class NodeDescriptor:
 			"script_path": script_path,
 			"category": category,
 			"appears_in_search": appears_in_search,
+			"is_library": is_library,
 		}
 		return d
 
@@ -204,6 +272,7 @@ class NodeDescriptor:
 			data.get("aliases", ""),
 			data.get("category", ""),
 			data.get("appears_in_search", false),
+			data.get("is_library", false)
 			)
 
 		return nd

classes/deck/nodes/general/print.gd

@@ -24,7 +24,6 @@ func _init() -> void:
 
 
 func _receive(to_input_port: int, data: Variant) -> void:
-	print(_belonging_to.get_reference_count())
 	var data_to_print := ""
 	if to_input_port == 1:
 		data = await resolve_input_port_value_async(0)

classes/deck/nodes/group/group_input_node.gd

@@ -5,7 +5,10 @@ extends DeckNode
 
 var output_count: int:
 	get:
-		return get_all_ports().size() - 1
+		if output_count == 0:
+			return get_all_ports().size()
+		else:
+			return output_count
 
 var group_node: DeckNode
 
@@ -14,8 +17,8 @@ func _init() -> void:
 	name = "Group input"
 	node_type = "group_input"
 	props_to_serialize = [&"output_count"]
-	appears_in_search = false
+	# appears_in_search = false
-	user_can_delete = false
+	# user_can_delete = false
 
 	add_output_port(
 		DeckType.Types.ANY,
@@ -52,11 +55,12 @@ func _on_outgoing_connection_removed(port_idx: int) -> void:
 
 
 func _pre_port_load() -> void:
-	for i in output_count + 1:
+	for i in output_count:
 		add_output_port(
 			DeckType.Types.ANY,
 			"Input %s" % (i + 1)
 		)
+	output_count = 0
 
 
 func _post_load(connections: Deck.NodeConnections) -> void:
@@ -75,4 +79,7 @@ func _post_load(connections: Deck.NodeConnections) -> void:
 
 
 func _value_request(from_port: int) -> Variant:
-	return await group_node.request_value_async(group_node.get_input_ports()[from_port].index_of_type)
+	if group_node:
+		return await group_node.request_value_async(group_node.get_input_ports()[from_port].index_of_type)
+	else:
+		return null

classes/deck/nodes/group/group_node.gd

@@ -8,6 +8,8 @@ var group_instance_id: String
 var input_node: DeckNode
 var output_node: DeckNode
 
+var is_library: bool
+
 var input_node_id: String
 var output_node_id: String
 
@@ -17,7 +19,7 @@ var extra_ports: Array
 func _init() -> void:
 	name = "Group"
 	node_type = "group_node"
-	props_to_serialize = [&"group_id", &"group_instance_id", &"extra_ports", &"input_node_id", &"output_node_id"]
+	props_to_serialize = [&"group_id", &"group_instance_id", &"extra_ports", &"input_node_id", &"output_node_id", &"is_library"]
 	appears_in_search = false
 
 
@@ -41,8 +43,8 @@ func init_io() -> void:
 	if output_node and output_node.ports_updated.is_connected(recalculate_ports):
 		output_node.ports_updated.disconnect(recalculate_ports)
 
-	input_node = group.get_node(group.group_input_node)
+	input_node = group.get_node(input_node_id)
-	output_node = group.get_node(group.group_output_node)
+	output_node = group.get_node(output_node_id)
 
 	recalculate_ports()
 	setup_connections()
@@ -78,7 +80,7 @@ func recalculate_ports() -> void:
 
 
 func _receive(to_input_port: int, data: Variant):
-	var i = DeckHolder.get_group_instance(group_id, group_instance_id).get_node(input_node_id)
+	# var i = DeckHolder.get_group_instance(group_id, group_instance_id).get_node(input_node_id)
 	#i.send(get_input_ports()[to_input_port].index_of_type, data)
 	input_node.send(get_input_ports()[to_input_port].index_of_type, data)
 

classes/deck/nodes/group/group_output_node.gd

@@ -5,7 +5,10 @@ extends DeckNode
 
 var input_count: int:
 	get:
-		return get_all_ports().size() - 1
+		if input_count == 0:
+			return get_all_ports().size()
+		else:
+			return input_count
 
 var group_node: DeckNode
 
@@ -14,8 +17,8 @@ func _init() -> void:
 	name = "Group output"
 	node_type = "group_output"
 	props_to_serialize = [&"input_count"]
-	appears_in_search = false
+	# appears_in_search = false
-	user_can_delete = false
+	# user_can_delete = false
 
 	add_input_port(
 		DeckType.Types.ANY,
@@ -53,11 +56,12 @@ func _on_incoming_connection_removed(port_idx: int) -> void:
 
 
 func _pre_port_load() -> void:
-	for i in input_count + 1:
+	for i in input_count:
 		add_input_port(
 			DeckType.Types.ANY,
 			"Output %s" % (i + 1)
 		)
+	input_count = 0
 
 
 func _post_load(connections: Deck.NodeConnections) -> void:
@@ -76,4 +80,5 @@ func _post_load(connections: Deck.NodeConnections) -> void:
 
 
 func _receive(to_input_port: int, data: Variant) -> void:
-	group_node.send(group_node.get_output_ports()[to_input_port].index_of_type, data)
+	if group_node:
+		group_node.send(group_node.get_output_ports()[to_input_port].index_of_type, data)

classes/deck/search_provider.gd

@@ -45,6 +45,18 @@ static var filters: Array[Filter] = [
 			#prints("c:", c, "r:", search_string.replace(c, ""))
 			return search_string.replace(c, "")
 			),
+	
+	# library filter. will only match library nodes. syntax: "#l"
+	Filter.new(
+		func(search_string: String) -> bool:
+			return "#l" in search_string,
+		
+		func(element: NodeDB.NodeDescriptor, _search_string: String, _pre_strip_string: String) -> bool:
+			return element.is_library,
+		
+		func(search_string: String) -> String:
+			return search_string.replace("#l", "")
+			),
 ]
 
 
@@ -72,6 +84,16 @@ static func search(term: String) -> Array[NodeDB.NodeDescriptor]:
 		if cleaned_search_string.is_subsequence_ofn(full_search_string):
 			res.append(nd)
 
+	# same thing but libraries
+	for node_type: String in NodeDB.libraries:
+		var nd: NodeDB.NodeDescriptor = NodeDB.libraries[node_type]
+		if not nd.appears_in_search:
+			continue
+
+		var full_search_string := nd.name + nd.aliases
+		if cleaned_search_string.is_subsequence_ofn(full_search_string):
+			res.append(nd)
+
 	# no filters apply, just return the results straight
 	if filters_to_apply.is_empty():
 		return res

classes/stream_graph_config.gd

@@ -0,0 +1,110 @@
+# (c) 2023-present Eroax
+# (c) 2023-present Yagich
+# GNU General Public License v3.0+ (see COPYING or https://www.gnu.org/licenses/gpl-3.0.txt)
+class_name StreamGraphConfig
+
+
+static var config := {
+	&"library_search_paths": [
+		ProjectSettings.globalize_path("user://library_groups"),
+	],
+}
+
+const SAVE_PATH := "user://config.json"
+
+
+static func _static_init() -> void:
+	var f := FileAccess.open(SAVE_PATH, FileAccess.READ)
+	if not f:
+		return
+	
+	var d = JSON.parse_string(f.get_as_text())
+	config.merge(d, true)
+
+
+static func get_p(property: StringName) -> Variant:
+	return config.get(property)
+
+
+static func has(property: StringName) -> bool:
+	return config.has(property)
+
+
+static func set_p(property: StringName, value: Variant) -> void:
+	config[property] = value
+	save()
+
+
+static func get_dict() -> Dictionary:
+	return config
+
+
+static func merge(with: Dictionary) -> void:
+	config.merge(with, true)
+	save()
+
+
+static func add_library_search_path(path: String) -> void:
+	var arr: Array = config[&"library_search_paths"]
+	arr.append(path)
+	NodeDB.reload_libraries()
+	save()
+
+
+static func remove_library_search_path(path: String) -> void:
+	var arr: Array = config[&"library_search_paths"]
+	if arr.find(path) < 1:
+		return
+	arr.erase(path)
+	NodeDB.reload_libraries()
+	save()
+
+
+static func rename_library_search_path(old_path: String, new_path: String) -> void:
+	var arr: Array = config[&"library_search_paths"]
+	var idx := arr.find(old_path)
+	if idx < 1:
+		return
+	
+	arr[idx] = new_path
+	NodeDB.reload_libraries()
+	save()
+
+
+static func move_library_path_up(path: String) -> void:
+	var arr: Array = config[&"library_search_paths"]
+	var idx := arr.find(path)
+	if idx < 1:
+		return
+	
+	var old_path = arr[idx]
+	arr[idx] = arr[idx - 1]
+	arr[idx - 1] = old_path
+	NodeDB.reload_libraries()
+	save()
+
+
+static func move_library_path_down(path: String) -> void:
+	var arr: Array = config[&"library_search_paths"]
+	var idx := arr.find(path)
+	if idx < 1 or idx == arr.size() - 1:
+		return
+	
+	var old_path = arr[idx]
+	arr[idx] = arr[idx + 1]
+	arr[idx + 1] = old_path
+	NodeDB.reload_libraries()
+	save()
+
+
+static func get_library_search_paths() -> Array:
+	return config[&"library_search_paths"]
+
+
+static func save() -> void:
+	var f := FileAccess.open(SAVE_PATH, FileAccess.WRITE)
+	if not f:
+		DeckHolder.logger.log_system("Could not open config file for writing", Logger.LogType.ERROR)
+		return
+	
+	f.store_string(JSON.stringify(config))

classes/util.gd

@@ -9,13 +9,13 @@ static var _batches: Dictionary # Dictionary[StringName, BatchConnection]
 
 ## Connects the [param p_func] to [param p_signal] if that connection doesn't already exist.
 static func safe_connect(p_signal: Signal, p_func: Callable) -> void:
-	if not p_signal.is_connected(p_func) and not p_signal.is_null() and p_func.is_valid():
+	if not p_signal.is_null() and p_func.is_valid() and not p_signal.is_connected(p_func):
 		p_signal.connect(p_func)
 
 
 ## Disconnects the [param p_func] from [param p_signal] if that connection exists.
 static func safe_disconnect(p_signal: Signal, p_func: Callable) -> void:
-	if p_signal.is_connected(p_func) and not p_signal.is_null() and p_func.is_valid():
+	if not p_signal.is_null() and p_func.is_valid() and p_signal.is_connected(p_func):
 		p_signal.disconnect(p_func)
 
 

graph_node_renderer/add_node_menu.gd

@@ -40,17 +40,17 @@ func add_category(category_name: String) -> void:
 
 
 ## Add an item to a category.
-func add_category_item(category: String, item: String, tooltip: String = "", favorite: bool = false) -> void:
+func add_category_item(category: String, item: String, tooltip: String = "", favorite: bool = false, library: bool = false) -> void:
 	var c: Category = categories[category]
-	c.add_item(item, tooltip, favorite)
+	c.add_item(item, tooltip, favorite, library)
 
 
 ## Wrapper around [method add_category_item] and [method add_category]. Adds an item to a [param category], creating the category if it doesn't exist yet.
-func add_item(category: String, item: String, tooltip: String = "", favorite: bool = false) -> void:
+func add_item(category: String, item: String, tooltip: String = "", favorite: bool = false, library: bool = false) -> void:
 	if not categories.has(category):
 		add_category(category)
 
-	add_category_item(category, item, tooltip, favorite)
+	add_category_item(category, item, tooltip, favorite, library)
 
 
 ## Get a [AddNodeMenu.Category] node by its' identifier.
@@ -74,7 +74,7 @@ func search(text: String) -> void:
 		return
 
 	for nd in search_results:
-		add_item(nd.category, nd.name, nd.description, NodeDB.is_node_favorite(nd.type))
+		add_item(nd.category, nd.name, nd.description, NodeDB.is_node_favorite(nd.type), nd.is_library)
 		var c := get_category(nd.category)
 		c.set_item_metadata(c.get_item_count() - 1, "type", nd.type)
 		c.set_item_metadata(c.get_item_count() - 1, "node_descriptor", weakref(nd))
@@ -231,8 +231,8 @@ class Category extends VBoxContainer:
 
 
 	## Add an item to the category.
-	func add_item(p_name: String, p_tooltip: String, p_favorite: bool = false) -> void:
+	func add_item(p_name: String, p_tooltip: String, p_favorite: bool = false, p_library: bool = false) -> void:
-		var item := CategoryItem.new(p_name, p_tooltip, p_favorite)
+		var item := CategoryItem.new(p_name, p_tooltip, p_favorite, p_library)
 		item.favorite_toggled.connect(
 			func(toggled: bool):
 				item_favorite_button_toggled.emit(item.get_index(), toggled)
@@ -302,6 +302,7 @@ class Category extends VBoxContainer:
 class CategoryItem extends HBoxContainer:
 	const FAVORITE_ICON := preload("res://graph_node_renderer/textures/favorite-icon.svg")
 	const NON_FAVORITE_ICON := preload("res://graph_node_renderer/textures/non-favorite-icon.svg")
+	const GROUP_ICON = preload("res://graph_node_renderer/textures/group_icon.svg")
 	const ITEM_MARGIN := 16
 
 	## The stylebox to use if this item is highlighted.
@@ -309,6 +310,7 @@ class CategoryItem extends HBoxContainer:
 
 	var is_highlighted: bool
 
+	var group_texture_rect: TextureRect
 	var fav_button: Button
 	var name_button: Button
 	var panel: PanelContainer
@@ -319,7 +321,7 @@ class CategoryItem extends HBoxContainer:
 	signal favorite_toggled(toggled: bool)
 
 
-	func _init(p_name: String, p_tooltip: String, p_favorite: bool) -> void:
+	func _init(p_name: String, p_tooltip: String, p_favorite: bool, p_library: bool) -> void:
 		fav_button = Button.new()
 		fav_button.icon = FAVORITE_ICON if p_favorite else NON_FAVORITE_ICON
 		fav_button.toggle_mode = true
@@ -354,6 +356,18 @@ class CategoryItem extends HBoxContainer:
 		var inner_hb := HBoxContainer.new()
 		inner_hb.add_child(fav_button)
 		inner_hb.add_child(name_button)
+
+		if p_library:
+			group_texture_rect = TextureRect.new()
+			group_texture_rect.stretch_mode = TextureRect.STRETCH_KEEP_ASPECT_CENTERED
+			group_texture_rect.custom_minimum_size = Vector2(12, 12)
+			group_texture_rect.texture = GROUP_ICON
+			group_texture_rect.tooltip_text = "This is a library group. It will create a group node."
+			inner_hb.add_child(group_texture_rect)
+			var m := MarginContainer.new()
+			m.add_theme_constant_override(&"margin_right", 6)
+			inner_hb.add_child(m)
+		
 		panel.add_child(inner_hb)
 
 		add_child(mc)

graph_node_renderer/deck_holder_renderer.gd

@@ -209,6 +209,9 @@ func _notification(what: int) -> void:
 
 func _on_tab_container_tab_about_to_change(previous_tab: int) -> void:
 	var deck := get_deck_at_tab(previous_tab)
+	if deck == null:
+		return
+
 	Util.safe_disconnect(deck.variables_updated, bottom_dock.rebuild_variable_tree)
 	
 	var deck_renderer := get_deck_renderer_at_tab(previous_tab)
@@ -219,21 +222,25 @@ func _on_tab_container_tab_about_to_change(previous_tab: int) -> void:
 
 
 func _on_tab_container_tab_changed(tab: int) -> void:
+	var deck := get_active_deck()
+	if deck == null:
+		return
 	var is_group = tab_container.get_tab_metadata(tab, "group", false)
 	file_popup_menu.set_item_disabled(FileMenuId.SAVE, is_group)
 	file_popup_menu.set_item_disabled(FileMenuId.SAVE_AS, is_group)
 	bottom_dock.rebuild_variable_tree(get_active_deck().variable_stack)
-	var deck := get_active_deck()
 	deck.variables_updated.connect(bottom_dock.rebuild_variable_tree.bind(deck.variable_stack))
 	
 	sidebar.set_edited_deck(deck.id)
 	get_active_deck_renderer().node_selected.connect(set_sidebar_node)
 	get_active_deck_renderer().node_deselected.connect(set_sidebar_node)
+	#get_active_deck_renderer().nodes_about_to_delete.connect(sidebar.set_edited_node)
 	sidebar.refresh_node_list()
 	
 	var batch := Util.batch_begin()
 	batch.add(deck.node_added, refresh_sidebar_node_list)
 	batch.add(deck.node_removed, refresh_sidebar_node_list)
+	#batch.add(get_active_deck_renderer().nodes_about_to_delete, sidebar.set_edited_node)
 	Util.push_batch(batch, &"sidebar_signals")
 
 
@@ -430,7 +437,11 @@ func get_active_deck() -> Deck:
 
 ## Returns the deck at [param tab] in the [member tab_container].
 func get_deck_at_tab(tab: int) -> Deck:
-	return get_deck_renderer_at_tab(tab).deck
+	var r := get_deck_renderer_at_tab(tab)
+	if is_instance_valid(r.deck):
+		return get_deck_renderer_at_tab(tab).deck
+	else:
+		return null
 
 
 ## Returns the current deck renderer in the [member tab_container].

graph_node_renderer/deck_holder_renderer.tscn

@@ -16,7 +16,7 @@
 [ext_resource type="PackedScene" uid="uid://cvvkj138fg8jg" path="res://graph_node_renderer/unsaved_changes_dialog.tscn" id="9_4n0q6"]
 [ext_resource type="PackedScene" uid="uid://bu466w2w3q08c" path="res://graph_node_renderer/about_dialog.tscn" id="11_6ln7n"]
 [ext_resource type="PackedScene" uid="uid://brfrufvkjwcor" path="res://graph_node_renderer/rpc_setup_dialog.tscn" id="12_1xrfk"]
-[ext_resource type="PackedScene" uid="uid://dodqetbke5wji" path="res://graph_node_renderer/settings_dialog.tscn" id="16_rktri"]
+[ext_resource type="PackedScene" uid="uid://dodqetbke5wji" path="res://graph_node_renderer/settings/settings_dialog.tscn" id="16_rktri"]
 [ext_resource type="PackedScene" uid="uid://cd1t0gvi022gx" path="res://graph_node_renderer/compat_dialog.tscn" id="17_2ndnq"]
 
 [node name="DeckHolderRenderer" type="Control"]

graph_node_renderer/deck_renderer_graph_edit.gd

@@ -43,7 +43,9 @@ var is_group: bool = false
 
 var change_dirty: bool = true
 
-signal dirty_state_changed
+signal dirty_state_changed()
+signal nodes_about_to_delete()
+
 
 ## Sets up the [member search_popup_panel] with an instance of [member ADD_NODE_SCENE]
 ## stored in [member add_node_menu].  And sets its size of [member search_popup_panel] to
@@ -90,6 +92,9 @@ func attempt_connection(from_node_name: StringName, from_port: int, to_node_name
 
 
 func _is_node_hover_valid(from_node: StringName, from_port: int, to_node: StringName, to_port: int) -> bool:
+	if deck.is_library:
+		return false
+
 	var from_node_renderer: DeckNodeRendererGraphNode = get_node(NodePath(from_node))
 	var to_node_renderer: DeckNodeRendererGraphNode = get_node(NodePath(to_node))
 	
@@ -99,6 +104,9 @@ func _is_node_hover_valid(from_node: StringName, from_port: int, to_node: String
 ## Receives [signal GraphEdit.disconnection_request] and attempts to disconnect the two [DeckNode]s
 ## involved, utilizes [NodeDB] for accessing them.
 func attempt_disconnect(from_node_name: StringName, from_port: int, to_node_name: StringName, to_port: int) -> void:
+	if deck.is_library:
+		return
+
 	var from_node_renderer: DeckNodeRendererGraphNode = get_node(NodePath(from_node_name))
 	var to_node_renderer: DeckNodeRendererGraphNode = get_node(NodePath(to_node_name))
 
@@ -146,7 +154,8 @@ func focus_selection() -> void:
 
 ## Updates [member Deck]s meta property "offset" whenever [member GraphEdit.scroll_offset]
 func _on_scroll_offset_changed(offset: Vector2) -> void:
-	deck.set_meta("offset", offset)
+	if is_instance_valid(deck):
+		deck.set_meta("offset", offset)
 
 
 ## Setups all the data from the set [member deck] in this [DeckRendererGraphEdit]
@@ -160,11 +169,20 @@ func initialize_from_deck() -> void:
 		var node_renderer: DeckNodeRendererGraphNode = NODE_SCENE.instantiate()
 		node_renderer.node = deck.get_node(node_id)
 		node_renderer.name = node_id
+		node_renderer.draggable = not deck.is_library
 		add_child(node_renderer)
 		node_renderer.position_offset = node_renderer.node.position_as_vector2()
 	change_dirty = true
 	dirty = false
 	
+	right_disconnects = not deck.is_library
+
+	if deck.is_library:
+		connection_drag_started.connect(
+			func(from_node: StringName, from_port: int, is_output: bool):
+				force_connection_drag_end()
+		)
+
 	refresh_connections()
 	
 	var ofs = deck.get_meta("offset", Vector2())
@@ -201,14 +219,11 @@ func _on_deck_node_added(node: DeckNode) -> void:
 ## Connected to [signal Deck.node_added], used to remove the specified
 ## [DeckNodeRendererGraphNode] and queue_free it.
 func _on_deck_node_removed(node: DeckNode) -> void:
-	for renderer: DeckNodeRendererGraphNode in get_children():
+	# TODO: when multiple nodes are removed and they are connected, the renderer will break
-		if renderer.node != node:
+	# trying to get an invalid node. (GraphEdit, this is not on us.)
-			continue
+	# consider a batch removed signal for Deck or a separate signal for grouping nodes in 0.0.6.
-		# TODO: when multiple nodes are removed and they are connected, the renderer will break
+	refresh_connections()
-		# trying to get an invalid node. (GraphEdit, this is not on us.)
+	get_node_renderer(node).queue_free()
-		# consider a batch removed signal for Deck or a separate signal for grouping nodes in 0.0.6.
-		renderer.queue_free()
-		break
 	dirty = true
 
 
@@ -222,55 +237,57 @@ func get_selected_nodes() -> Array:
 
 
 func _gui_input(event: InputEvent) -> void:
-	if RendererShortcuts.check_shortcut("group_nodes", event) and get_selected_nodes().size() > 0:
+	if not deck.is_library:
-		clear_connections()
+		if RendererShortcuts.check_shortcut("group_nodes", event) and get_selected_nodes().size() > 0:
-		var nodes = get_selected_nodes().map(
+			clear_connections()
-			func(x: DeckNodeRendererGraphNode):
+			var nodes = get_selected_nodes().map(
-				return x.node
+				func(x: DeckNodeRendererGraphNode):
-		)
+					return x.node
-		deck.group_nodes(nodes)
+			)
-		refresh_connections()
+			deck.group_nodes(nodes)
-		accept_event()
+			refresh_connections()
+			accept_event()
 		
-	if RendererShortcuts.check_shortcut("add_node", event):
+		if RendererShortcuts.check_shortcut("add_node", event):
-		var p := get_viewport_rect().position + get_global_mouse_position()
+			var p := get_viewport_rect().position + get_global_mouse_position()
-		p += Vector2(10, 10)
+			p += Vector2(10, 10)
-		var r := Rect2i(p, search_popup_panel.size)
+			var r := Rect2i(p, search_popup_panel.size)
-		search_popup_panel.popup_on_parent(r)
+			search_popup_panel.popup_on_parent(r)
-		add_node_menu.focus_search_bar()
+			add_node_menu.focus_search_bar()
-		popup_position = r.position
+			popup_position = r.position
-		accept_event()
+			accept_event()
 		
-	if event.is_action_pressed("debug_make_unique") and get_selected_nodes().size() == 1:
+		if event.is_action_pressed("debug_make_unique") and get_selected_nodes().size() == 1:
-		var node: DeckNode = get_selected_nodes().map(
+			var node: DeckNode = get_selected_nodes().map(
-			func(x: DeckNodeRendererGraphNode):
+				func(x: DeckNodeRendererGraphNode):
-				return x.node
+					return x.node
-		)[0]
+			)[0]
-		if node.node_type != "group_node":
+			if node.node_type != "group_node":
-			return
+				return
 			
-		node.make_unique()
+			node.make_unique()
 
-	if RendererShortcuts.check_shortcut("rename_node", event) and get_selected_nodes().size() == 1:
+		if RendererShortcuts.check_shortcut("rename_node", event) and get_selected_nodes().size() == 1:
-		var node: DeckNodeRendererGraphNode = get_selected_nodes()[0]
+			var node: DeckNodeRendererGraphNode = get_selected_nodes()[0]
-		var pos := get_viewport_rect().position + get_global_mouse_position()
+			var pos := get_viewport_rect().position + get_global_mouse_position()
-		rename_popup.popup_on_parent(Rect2i(pos, rename_popup_size))
+			rename_popup.popup_on_parent(Rect2i(pos, rename_popup_size))
-		rename_popup.le.size.x = rename_popup_size.x
+			rename_popup.le.size.x = rename_popup_size.x
-		rename_popup.set_text(node.title)
+			rename_popup.set_text(node.title)
-		accept_event()
+			accept_event()
+		
+		if RendererShortcuts.check_shortcut("duplicate_nodes", event) and get_selected_nodes().size() > 0:
+			_on_duplicate_nodes_request()
+			accept_event()
+		
+		if RendererShortcuts.check_shortcut("paste_nodes", event):
+			_on_paste_nodes_request()
+			accept_event()
 	
 	# copy/paste/duplicate/etc
 	if RendererShortcuts.check_shortcut("copy_nodes", event) and get_selected_nodes().size() > 0:
 		_on_copy_nodes_request()
 		accept_event()
 	
-	if RendererShortcuts.check_shortcut("duplicate_nodes", event) and get_selected_nodes().size() > 0:
-		_on_duplicate_nodes_request()
-		accept_event()
-	
-	if RendererShortcuts.check_shortcut("paste_nodes", event):
-		_on_paste_nodes_request()
-		accept_event()
 	
 	if RendererShortcuts.check_shortcut("focus_nodes", event):
 		focus_selection()
@@ -300,6 +317,8 @@ func _on_rename_popup_closed() -> void:
 
 ## Opens [member search_popup_panel] at the mouse position.  Connected to [signal GraphEdit.popup_request]
 func _on_popup_request(p_popup_position: Vector2) -> void:
+	if deck.is_library:
+		return
 	var p := get_viewport_rect().position + get_global_mouse_position()
 	p += Vector2(10, 10)
 	var r := Rect2i(p, search_popup_panel.size)
@@ -312,13 +331,19 @@ func _on_popup_request(p_popup_position: Vector2) -> void:
 ## [method NodeDB.instance_node].  Then placing it at the [member scroll_offset] +
 ## [member popup_position] / [member zoom]
 func _on_add_node_menu_node_selected(type: String) -> void:
-	var node := NodeDB.instance_node(type) as DeckNode
-	deck.add_node_inst(node)
 	var node_pos := ((scroll_offset + popup_position) / zoom)
 	if snapping_enabled:
 		node_pos = node_pos.snapped(Vector2(snapping_distance, snapping_distance))
+	if not NodeDB.is_library(type):
+		# var node := NodeDB.instance_node(type) as DeckNode
+		# deck.add_node_inst(node)
+		var node := deck.add_node_type(type)
 
-	get_node_renderer(node).position_offset = node_pos
+		get_node_renderer(node).position_offset = node_pos
+	else:
+		var node := deck.add_lib_group_node(type)
+		
+		get_node_renderer(node).position_offset = node_pos
 
 	search_popup_panel.hide()
 
@@ -347,6 +372,8 @@ func _on_delete_nodes_request(nodes: Array[StringName]) -> void:
 	if node_ids.is_empty():
 		return
 
+	nodes_about_to_delete.emit()
+
 	for node_id in node_ids:
 		deck.remove_node(node_id, true)
 

graph_node_renderer/descriptors/button_descriptor.gd

@@ -9,3 +9,4 @@ extends DescriptorContainer
 func _setup(port: Port, node: DeckNode) -> void:
 	button.text = port.label
 	button.pressed.connect(node.press_button.bind(port.index))
+	button.disabled = node._belonging_to.is_library

graph_node_renderer/descriptors/check_box_descriptor.gd

@@ -6,7 +6,7 @@ extends DescriptorContainer
 @onready var check_box: CheckBox = %CheckBox
 
 
-func _setup(port: Port, _node: DeckNode) -> void:
+func _setup(port: Port, node: DeckNode) -> void:
 	if descriptor.size() > 1:
 		check_box.button_pressed = true
 	if port.value is bool:
@@ -14,6 +14,7 @@ func _setup(port: Port, _node: DeckNode) -> void:
 	check_box.text = port.label
 	port.value_callback = check_box.is_pressed
 	check_box.toggled.connect(port.set_value)
+	check_box.disabled = node._belonging_to.is_library
 
 
 func set_value(new_value: Variant) -> void:

graph_node_renderer/descriptors/codeblock_descriptor.gd

@@ -6,7 +6,7 @@ extends DescriptorContainer
 @onready var code_edit: CodeEdit = %CodeEdit
 
 
-func _setup(port: Port, _node: DeckNode) -> void:
+func _setup(port: Port, node: DeckNode) -> void:
 	if port.value:
 		code_edit.text = str(port.value)
 	code_edit.placeholder_text = port.label
@@ -14,6 +14,7 @@ func _setup(port: Port, _node: DeckNode) -> void:
 	code_edit.text_changed.connect(port.set_value.bind(code_edit.get_text))
 	code_edit.custom_minimum_size = Vector2(200, 100)
 	code_edit.size_flags_vertical = SIZE_EXPAND_FILL
+	code_edit.editable = not node._belonging_to.is_library
 
 
 func set_value(new_value: Variant) -> void:

graph_node_renderer/descriptors/field_descriptor.gd

@@ -6,12 +6,13 @@ extends DescriptorContainer
 @onready var line_edit: LineEdit = %LineEdit
 
 
-func _setup(port: Port, _node: DeckNode) -> void:
+func _setup(port: Port, node: DeckNode) -> void:
 	if port.value:
 		line_edit.text = str(port.value)
 	line_edit.placeholder_text = port.label
 	port.value_callback = line_edit.get_text
 	line_edit.text_changed.connect(port.set_value)
+	line_edit.editable = not node._belonging_to.is_library
 
 
 func set_value(new_value: Variant) -> void:

graph_node_renderer/descriptors/single_choice_descriptor.gd

@@ -6,7 +6,7 @@ extends DescriptorContainer
 @onready var box: OptionButton = %Box
 
 
-func _setup(port: Port, _node: DeckNode) -> void:
+func _setup(port: Port, node: DeckNode) -> void:
 	if descriptor.slice(1).is_empty():
 		if port.value:
 			box.add_item(port.value)
@@ -27,7 +27,7 @@ func _setup(port: Port, _node: DeckNode) -> void:
 				if box.get_item_text(i) == port.value:
 					box.select(i)
 					break
-
+	box.disabled = node._belonging_to.is_library
 
 func set_value(new_value: Variant) -> void:
 	if box.has_focus():

graph_node_renderer/descriptors/spin_box_descriptor.gd

@@ -6,7 +6,7 @@ extends DescriptorContainer
 @onready var spin_box: SpinBox = %SpinBox
 
 
-func _setup(port: Port, _node: DeckNode) -> void:
+func _setup(port: Port, node: DeckNode) -> void:
 	spin_box.tooltip_text = port.label
 	if port.value != null:
 		spin_box.value = float(port.value)
@@ -26,6 +26,7 @@ func _setup(port: Port, _node: DeckNode) -> void:
 			spin_box.step = float(descriptor[4])
 	port.value_callback = spin_box.get_value
 	spin_box.value_changed.connect(port.set_value)
+	spin_box.editable = not node._belonging_to.is_library
 
 
 func set_value(new_value: Variant) -> void:

graph_node_renderer/settings/library_group_paths_editor.gd

@@ -0,0 +1,176 @@
+# (c) 2023-present Eroax
+# (c) 2023-present Yagich
+# GNU General Public License v3.0+ (see COPYING or https://www.gnu.org/licenses/gpl-3.0.txt)
+extends PanelContainer
+
+@onready var paths_container: VBoxContainer = %PathsContainer
+@onready var folder_dialog: FileDialog = %FolderDialog
+@onready var add_button: Button = %AddButton
+
+var _edited: FolderView
+
+
+func _ready() -> void:
+	for i in StreamGraphConfig.get_library_search_paths().size():
+		var path: String = StreamGraphConfig.get_library_search_paths()[i]
+		add_folder_view(path, i == 0)
+
+	# calculate_move_buttons()
+	folder_dialog.canceled.connect(_on_folder_dialog_canceled)
+	
+	add_button.pressed.connect(
+		func():
+			folder_dialog.dir_selected.connect(_on_folder_dialog_dir_selected_new, CONNECT_ONE_SHOT)
+			folder_dialog.popup_centered()
+	)
+
+
+func calculate_move_buttons() -> void:
+	await get_tree().process_frame
+	for fv: FolderView in paths_container.get_children():
+		fv.calculate_move_buttons()
+
+
+func _on_folder_dialog_dir_selected_new(path: String) -> void:
+	add_folder_view(path)
+	StreamGraphConfig.add_library_search_path(path)
+
+
+func add_folder_view(path: String, default: bool = false) -> void:
+	var fv := FolderView.new(path, default)
+	paths_container.add_child(fv)
+	fv.open_dialog.connect(_on_folder_view_open_dialog.bind(fv))
+	fv.deleted.connect(calculate_move_buttons)
+	fv.moved.connect(calculate_move_buttons)
+	calculate_move_buttons()
+
+
+func _on_folder_view_open_dialog(path: String, who: FolderView) -> void:
+	folder_dialog.current_dir = path
+	folder_dialog.dir_selected.connect(_on_folder_dialog_dir_selected, CONNECT_ONE_SHOT)
+	_edited = who
+	folder_dialog.popup_centered()
+
+
+func _on_folder_dialog_dir_selected(path: String) -> void:
+	if not _edited:
+		return
+	
+	StreamGraphConfig.rename_library_search_path(_edited.path, path)
+	_edited.set_path(path)
+	_edited = null
+
+
+func _on_folder_dialog_canceled() -> void:
+	Util.safe_disconnect(folder_dialog.dir_selected, _on_folder_dialog_dir_selected)
+	Util.safe_disconnect(folder_dialog.dir_selected, _on_folder_dialog_dir_selected_new)
+	_edited = null
+
+
+class FolderView extends HBoxContainer:
+	const REMOVE_ICON := preload("res://graph_node_renderer/textures/remove-icon.svg")
+	const LOAD_ICON := preload("res://graph_node_renderer/textures/load-icon.svg")
+	
+	const ARROW_DOWN_ICON := preload("res://graph_node_renderer/textures/arrow-down-icon.svg")
+	const ARROW_UP_ICON := preload("res://graph_node_renderer/textures/arrow-up-icon.svg")
+	
+	var label: Label
+	var delete_button: Button
+	var open_path_button: Button
+	
+	var move_down_button: Button
+	var move_up_button: Button
+	
+	var path: String
+	var is_default: bool = false
+	
+	signal open_dialog(path: String)
+	signal deleted()
+	signal moved()
+	
+	
+	func _init(p_path: String = "", p_default: bool = false) -> void:
+		path = p_path
+		is_default = p_default
+
+		label = Label.new()
+		label.text = path
+		label.size_flags_horizontal = Control.SIZE_EXPAND_FILL
+		label.clip_text = true
+		label.text_overrun_behavior = TextServer.OVERRUN_TRIM_ELLIPSIS
+		label.tooltip_text = path
+		
+		delete_button = Button.new()
+		delete_button.flat = true
+		delete_button.icon = REMOVE_ICON
+		delete_button.disabled = p_default
+		delete_button.tooltip_text = "Delete"
+		delete_button.pressed.connect(
+			func():
+				deleted.emit()
+				StreamGraphConfig.remove_library_search_path(path)
+				queue_free()
+		)
+		
+		open_path_button = Button.new()
+		open_path_button.flat = true
+		open_path_button.icon = LOAD_ICON
+		open_path_button.disabled = p_default
+		open_path_button.tooltip_text = "Select path"
+		open_path_button.pressed.connect(
+			func():
+				open_dialog.emit(path)
+		)
+		
+		move_up_button = Button.new()
+		move_up_button.flat = true
+		move_up_button.icon = ARROW_UP_ICON
+		move_up_button.tooltip_text = "Move up"
+		move_up_button.pressed.connect(
+			func():
+				StreamGraphConfig.move_library_path_up(path)
+				get_parent().move_child(self, get_index() - 1)
+				moved.emit()
+		)
+		
+		move_down_button = Button.new()
+		move_down_button.flat = true
+		move_down_button.icon = ARROW_DOWN_ICON
+		move_down_button.tooltip_text = "Move down"
+		move_down_button.pressed.connect(
+			func():
+				StreamGraphConfig.move_library_path_down(path)
+				get_parent().move_child(self, get_index() + 1)
+				moved.emit()
+		)
+		
+		if p_default:
+			label.tooltip_text += "\nThis is a default path. It cannot be changed or removed."
+			delete_button.tooltip_text = "This is a default path. It cannot be changed or removed."
+			move_up_button.tooltip_text = "This is a default path. It cannot be changed or removed."
+			move_down_button.tooltip_text = "This is a default path. It cannot be changed or removed."
+			open_path_button.tooltip_text = "This is a default path. It cannot be changed or removed."
+			move_up_button.disabled = p_default
+			move_down_button.disabled = p_default
+
+		add_child(label)
+		add_child(delete_button)
+		add_child(open_path_button)
+		add_child(move_down_button)
+		add_child(move_up_button)
+	
+	
+	func set_path(p_path: String) -> void:
+		path = p_path
+		label.text = path
+
+
+	func calculate_move_buttons() -> void:
+		if is_default:
+			move_up_button.disabled = true
+			move_down_button.disabled = true
+			return
+		
+		move_up_button.disabled = get_index() == 1
+		move_down_button.disabled = get_index() == get_parent().get_child_count() - 1
+		

graph_node_renderer/settings/library_group_paths_editor.tscn

@@ -0,0 +1,60 @@
+[gd_scene load_steps=3 format=3 uid="uid://dq6hrbd6ev4ls"]
+
+[ext_resource type="Script" path="res://graph_node_renderer/settings/library_group_paths_editor.gd" id="1_swcyp"]
+[ext_resource type="Texture2D" uid="uid://drxi5ks3mqbnk" path="res://graph_node_renderer/textures/add_icon.svg" id="2_v1g1h"]
+
+[node name="LibraryGroupPathsEditor" type="PanelContainer"]
+offset_right = 272.0
+offset_bottom = 179.0
+size_flags_vertical = 3
+script = ExtResource("1_swcyp")
+
+[node name="MarginContainer" type="MarginContainer" parent="."]
+layout_mode = 2
+theme_override_constants/margin_left = 4
+theme_override_constants/margin_top = 4
+theme_override_constants/margin_right = 4
+theme_override_constants/margin_bottom = 4
+
+[node name="VBoxContainer" type="VBoxContainer" parent="MarginContainer"]
+layout_mode = 2
+
+[node name="PanelContainer" type="PanelContainer" parent="MarginContainer/VBoxContainer"]
+layout_mode = 2
+size_flags_vertical = 3
+
+[node name="MarginContainer" type="MarginContainer" parent="MarginContainer/VBoxContainer/PanelContainer"]
+layout_mode = 2
+theme_override_constants/margin_left = 8
+theme_override_constants/margin_right = 8
+
+[node name="ScrollContainer" type="ScrollContainer" parent="MarginContainer/VBoxContainer/PanelContainer/MarginContainer"]
+layout_mode = 2
+horizontal_scroll_mode = 0
+
+[node name="PathsContainer" type="VBoxContainer" parent="MarginContainer/VBoxContainer/PanelContainer/MarginContainer/ScrollContainer"]
+unique_name_in_owner = true
+layout_mode = 2
+size_flags_horizontal = 3
+size_flags_vertical = 3
+
+[node name="CenterContainer" type="CenterContainer" parent="MarginContainer/VBoxContainer"]
+layout_mode = 2
+
+[node name="AddButton" type="Button" parent="MarginContainer/VBoxContainer/CenterContainer"]
+unique_name_in_owner = true
+layout_mode = 2
+text = "Add"
+icon = ExtResource("2_v1g1h")
+
+[node name="Label" type="Label" parent="."]
+layout_mode = 2
+
+[node name="FolderDialog" type="FileDialog" parent="."]
+unique_name_in_owner = true
+title = "Open a Directory"
+initial_position = 2
+size = Vector2i(760, 500)
+ok_button_text = "Select Current Folder"
+file_mode = 2
+access = 2

graph_node_renderer/settings/settings_dialog.tscn

@@ -1,7 +1,8 @@
-[gd_scene load_steps=3 format=3 uid="uid://dodqetbke5wji"]
+[gd_scene load_steps=4 format=3 uid="uid://dodqetbke5wji"]
 
-[ext_resource type="Script" path="res://graph_node_renderer/settings_dialog.gd" id="1_lh25g"]
+[ext_resource type="Script" path="res://graph_node_renderer/settings/settings_dialog.gd" id="1_l08va"]
-[ext_resource type="PackedScene" uid="uid://bvjxc2vyx35b1" path="res://graph_node_renderer/shortcuts/shortcuts_editor.tscn" id="2_5tyfb"]
+[ext_resource type="PackedScene" uid="uid://dq6hrbd6ev4ls" path="res://graph_node_renderer/settings/library_group_paths_editor.tscn" id="2_f0uh5"]
+[ext_resource type="PackedScene" uid="uid://bvjxc2vyx35b1" path="res://graph_node_renderer/shortcuts/shortcuts_editor.tscn" id="2_pet1f"]
 
 [node name="SettingsDialog" type="AcceptDialog"]
 title = "Settings"
@@ -10,13 +11,13 @@ size = Vector2i(705, 370)
 min_size = Vector2i(500, 250)
 ok_button_text = "Close"
 dialog_close_on_escape = false
-script = ExtResource("1_lh25g")
+script = ExtResource("1_l08va")
 
 [node name="HSplitContainer" type="HSplitContainer" parent="."]
 offset_left = 8.0
 offset_top = 8.0
 offset_right = 697.0
-offset_bottom = 321.0
+offset_bottom = 324.0
 
 [node name="CategoryTree" type="Tree" parent="HSplitContainer"]
 unique_name_in_owner = true
@@ -29,22 +30,26 @@ unique_name_in_owner = true
 layout_mode = 2
 size_flags_horizontal = 3
 
-[node name="General" type="VBoxContainer" parent="HSplitContainer/CategoryContent"]
+[node name="General" type="ScrollContainer" parent="HSplitContainer/CategoryContent"]
-visible = false
 layout_mode = 1
 anchors_preset = 15
 anchor_right = 1.0
 anchor_bottom = 1.0
 grow_horizontal = 2
 grow_vertical = 2
+horizontal_scroll_mode = 0
 
-[node name="Label" type="Label" parent="HSplitContainer/CategoryContent/General"]
+[node name="VBoxContainer" type="VBoxContainer" parent="HSplitContainer/CategoryContent/General"]
+layout_mode = 2
+size_flags_horizontal = 3
+
+[node name="Label" type="Label" parent="HSplitContainer/CategoryContent/General/VBoxContainer"]
 layout_mode = 2
 text = "Library Group Search Paths"
 
-[node name="LibraryGroupPaths" type="PanelContainer" parent="HSplitContainer/CategoryContent/General"]
+[node name="LibraryGroupPathsEditor" parent="HSplitContainer/CategoryContent/General/VBoxContainer" instance=ExtResource("2_f0uh5")]
+custom_minimum_size = Vector2(0, 290)
 layout_mode = 2
-size_flags_vertical = 3
 
 [node name="Shortcuts" type="VBoxContainer" parent="HSplitContainer/CategoryContent"]
 visible = false
@@ -54,6 +59,7 @@ anchor_right = 1.0
 anchor_bottom = 1.0
 grow_horizontal = 2
 grow_vertical = 2
+size_flags_horizontal = 3
 
 [node name="Label" type="Label" parent="HSplitContainer/CategoryContent/Shortcuts"]
 layout_mode = 2
@@ -76,7 +82,7 @@ theme_override_constants/margin_top = 4
 theme_override_constants/margin_right = 4
 theme_override_constants/margin_bottom = 4
 
-[node name="ShortcutsEditor" parent="HSplitContainer/CategoryContent/Shortcuts/PanelContainer/ScrollContainer/MarginContainer" instance=ExtResource("2_5tyfb")]
+[node name="ShortcutsEditor" parent="HSplitContainer/CategoryContent/Shortcuts/PanelContainer/ScrollContainer/MarginContainer" instance=ExtResource("2_pet1f")]
 unique_name_in_owner = true
 layout_mode = 2
 

graph_node_renderer/shortcuts/shortcuts_editor.gd

@@ -107,6 +107,16 @@ class ShortcutButton extends Button:
 	func _init(p_event: InputEvent) -> void:
 		toggle_mode = true
 		set_event(p_event)
+		button_down.connect(
+			func():
+				text += "..."
+		)
+		
+		toggled.connect(
+			func(toggled_on: bool):
+				if not toggled_on:
+					text = _event.as_text()
+		)
 	
 	
 	## Sets the event this button is storing and updates its text.

graph_node_renderer/sidebar/accordion_menu.gd

@@ -34,6 +34,11 @@ const COLLAPSE_ICON = preload("res://graph_node_renderer/textures/collapse-icon.
 const COLLAPSE_ICON_COLLAPSED = preload("res://graph_node_renderer/textures/collapse-icon-collapsed.svg")
 const BASE_MARGIN := 12
 var _indent_level := 1
+var _ignore_child_lines: Array[int]
+var _title: String
+
+var _renamed_lambda = func():
+	_set_title(name)
 
 
 func _enter_tree() -> void:
@@ -43,10 +48,10 @@ func _enter_tree() -> void:
 	_collapse_button = CollapseButton.new(collapsed, name)
 	_collapse_button.toggled.connect(set_collapsed)
 	
-	renamed.connect(
+	if _title.is_empty():
-		func():
+		renamed.connect(_renamed_lambda)
-			_collapse_button.text = name
+	else:
-	)
+		_collapse_button.text = _title
 	
 	add_child(_collapse_button, false, Node.INTERNAL_MODE_FRONT)
 
@@ -55,6 +60,20 @@ func _exit_tree() -> void:
 	_collapse_button.queue_free()
 
 
+func _set_title(title: String) -> void:
+	_title = title
+	
+	if _collapse_button:
+		_collapse_button.text = title
+
+
+func set_title(title: String) -> void:
+	if renamed.is_connected(_renamed_lambda):
+		renamed.disconnect(_renamed_lambda)
+	
+	_set_title(title)
+
+
 func set_collapsed(v: bool) -> void:
 	collapsed = v
 	if _collapse_button:
@@ -88,6 +107,16 @@ func uncollapse() -> void:
 		update_minimum_size()
 
 
+func set_ignore_child_lines(idx: int, ignore: bool = true) -> void:
+	if idx not in _ignore_child_lines and ignore:
+		_ignore_child_lines.append(idx)
+		return
+	
+	if idx in _ignore_child_lines and not ignore:
+		_ignore_child_lines.erase(idx)
+		return
+
+
 func _notification(what: int) -> void:
 	if what == NOTIFICATION_PRE_SORT_CHILDREN:
 		for i in get_children(false):
@@ -122,6 +151,9 @@ func _draw() -> void:
 		
 		# draw lines going out to each child
 		for child in get_children(false):
+			# skip children marked as ignored
+			if child.get_index(false) in _ignore_child_lines:
+				continue
 			# special case for if the child is also an accordion:
 			# draw the line pointing to the header
 			if child is AccordionMenu:

graph_node_renderer/sidebar/sidebar.gd

@@ -98,17 +98,20 @@ func set_edited_node(id: String = "") -> void:
 	edited_node_id = id
 
 	for i in node_menu.get_children():
-		i.queue_free()
+		#i.queue_free()
+		i.free()
 
 	if id.is_empty():
 		var label := Label.new()
 		label.autowrap_mode = TextServer.AUTOWRAP_WORD
 		label.text = "There is no Node selected (or multiple are selected). Select a single Node to edit its properties."
 		node_menu.add_child(label)
+		node_menu.draw_tree = false
 		node_inspector = null
 		return
 	
-	await get_tree().process_frame
+	#await get_tree().process_frame
+	node_menu.draw_tree = true
 	
 	node_inspector = NodeInspector.new(edited_deck_id, id)
 	node_inspector.go_to_node_requested.connect(
@@ -118,12 +121,17 @@ func set_edited_node(id: String = "") -> void:
 	for i in node_inspector.nodes:
 		node_menu.add_child(i)
 	
-	DeckHolder.get_deck(edited_deck_id).node_removed.connect(
+	DeckHolder.get_deck(edited_deck_id).get_node(id).about_to_free.connect(
-		func(node: DeckNode):
+		func():
-			if node._id == edited_node_id:
+			set_edited_node()
-				set_edited_node()
 	)
 	
+	#DeckHolder.get_deck(edited_deck_id).node_removed.connect(
+		#func(node: DeckNode):
+			#if node._id == edited_node_id:
+				#set_edited_node()
+	#)
+
 
 class Inspector extends HBoxContainer:
 	func _init(text: String, editor: Control = null) -> void:
@@ -146,17 +154,76 @@ class DeckInspector:
 		nodes.append(Inspector.new(text, control))
 
 
+	func create_label(text: String) -> Label:
+		var l := Label.new()
+		l.text = text
+		l.size_flags_horizontal = Control.SIZE_EXPAND_FILL
+		return l
+
+
+	func create_hb_label(text: String, control: Control) -> HBoxContainer:
+		var hb := HBoxContainer.new()
+		
+		control.size_flags_horizontal = Control.SIZE_EXPAND_FILL
+		hb.add_child(create_label(text))
+		hb.add_child(control)
+		
+		return hb
+	
+	
 	func _init(id: String) -> void:
 		ref = weakref(DeckHolder.get_deck(id))
 		var deck: Deck = ref.get_ref() as Deck
-		if deck.is_group:
+		
-			add_inspector("This deck is a group.")
+		var lib_menu := AccordionMenu.new()
+		lib_menu.set_title("Library Group")
+		
+		var lib_group_text: String
+		if deck.is_library:
+			lib_group_text = "This deck is open as a library group. You may not edit it here.\nTo edit it, you have to open the file it's in."
+		elif not deck.is_group:
+			lib_group_text = "You may save this deck as a Library Group to reuse it in future decks.\nYou may edit how it will appear."
+		else:
+			lib_group_text = "This deck is a group."
+		
+		var l := create_label(lib_group_text)
+		l.autowrap_mode = TextServer.AUTOWRAP_WORD
+		l.custom_minimum_size.x = 40
+		lib_menu.add_child(l)
+		lib_menu.set_ignore_child_lines(0)
+		
+		var name_field := LineEdit.new()
+		name_field.placeholder_text = "Name"
+		name_field.text = deck.lib_name
+		name_field.text_changed.connect(
+			func(new_text: String):
+				deck.lib_name = new_text
+		)
+		name_field.editable = not deck.is_group
+		lib_menu.add_child(create_hb_label("Library name:", name_field))
+		
+		var desc_field := TextEdit.new()
+		desc_field.wrap_mode = TextEdit.LINE_WRAPPING_BOUNDARY
+		desc_field.placeholder_text = "Description"
+		desc_field.text = deck.lib_description
+		desc_field.text_changed.connect(
+			func():
+				deck.lib_description = desc_field.text
+		)
+		desc_field.editable = not deck.is_group
+		desc_field.custom_minimum_size.y = 100
+		desc_field.custom_minimum_size.x = 100
+		lib_menu.add_child(create_hb_label("Library description:", desc_field))
+		
+		nodes.append(lib_menu)
 
 
 class NodeInspector:
 	var ref: WeakRef
 	var nodes: Array[Control]
 	
+	var _name_field: LineEdit
+	
 	signal go_to_node_requested()
 	
 	var DESCRIPTOR_SCENES := {
@@ -181,6 +248,13 @@ class NodeInspector:
 		return l
 	
 	
+	func _name_field_rename(new_name: String) -> void:
+		if _name_field.has_focus():
+			return
+		
+		_name_field.text = new_name
+	
+	
 	func _init(deck_id: String, id: String) -> void:
 		ref = weakref(DeckHolder.get_deck(deck_id).get_node(id))
 		var node: DeckNode = ref.get_ref() as DeckNode
@@ -201,18 +275,15 @@ class NodeInspector:
 		hb.add_child(copy_button)
 		add_inspector("Node Type:", hb)
 		
-		var name_field := LineEdit.new()
+		_name_field = LineEdit.new()
-		name_field.placeholder_text = "Node name"
+		_name_field.placeholder_text = "Node name"
-		name_field.text = node.name
+		_name_field.text = node.name
-		name_field.text_changed.connect(node.rename)
+		_name_field.text_changed.connect(node.rename)
-		node.renamed.connect(
+		_name_field.editable = not node._belonging_to.is_library
-			func(new_name: String) -> void:
-				if name_field.has_focus():
-					return
 
-				name_field.text = new_name
+		node.renamed.connect(_name_field_rename)
-		)
+
-		add_inspector("Node name:", name_field)
+		add_inspector("Node name:", _name_field)
 		
 		var focus_button := Button.new()
 		focus_button.text = "Focus node"
@@ -233,11 +304,11 @@ class NodeInspector:
 		var ports_menu := AccordionMenu.new()
 		ports_menu.draw_background = true
 		var is_output := ports[0].port_type == DeckNode.PortType.OUTPUT
-		ports_menu.set_name.call_deferred("Output Ports" if is_output else "Input Ports")
+		ports_menu.set_title("Output Ports" if is_output else "Input Ports")
 		for port in ports:
 			var acc := AccordionMenu.new()
 			acc.draw_background = true
-			acc.name = "Port %s" % port.index_of_type
+			acc.set_title("Port %s" % port.index_of_type)
 			
 			var label_label := create_label("Name: %s" % port.label)
 			acc.add_child(label_label)

graph_node_renderer/sidebar/sidebar.tscn

@@ -4,6 +4,7 @@
 [ext_resource type="Script" path="res://graph_node_renderer/sidebar/accordion_menu.gd" id="1_q1gqb"]
 
 [node name="Sidebar" type="PanelContainer"]
+custom_minimum_size = Vector2(340, 0)
 offset_right = 439.0
 offset_bottom = 266.0
 script = ExtResource("1_bcym7")

graph_node_renderer/textures/arrow-down-icon.svg

@@ -0,0 +1 @@
+<svg height="16" viewBox="0 0 16 16" width="16" xmlns="http://www.w3.org/2000/svg"><path d="M8 5v7l4-4m-4 4L4 8" fill="none" stroke-linecap="round" stroke-linejoin="round" stroke-width="2" stroke="#e0e0e0"/></svg>

graph_node_renderer/textures/arrow-down-icon.svg.import

@@ -0,0 +1,37 @@
+[remap]
+
+importer="texture"
+type="CompressedTexture2D"
+uid="uid://cl32inr5ja2kd"
+path="res://.godot/imported/arrow-down-icon.svg-744ecac080abb04bb3e26e5dc62154de.ctex"
+metadata={
+"vram_texture": false
+}
+
+[deps]
+
+source_file="res://graph_node_renderer/textures/arrow-down-icon.svg"
+dest_files=["res://.godot/imported/arrow-down-icon.svg-744ecac080abb04bb3e26e5dc62154de.ctex"]
+
+[params]
+
+compress/mode=0
+compress/high_quality=false
+compress/lossy_quality=0.7
+compress/hdr_compression=1
+compress/normal_map=0
+compress/channel_pack=0
+mipmaps/generate=false
+mipmaps/limit=-1
+roughness/mode=0
+roughness/src_normal=""
+process/fix_alpha_border=true
+process/premult_alpha=false
+process/normal_map_invert_y=false
+process/hdr_as_srgb=false
+process/hdr_clamp_exposure=false
+process/size_limit=0
+detect_3d/compress_to=1
+svg/scale=1.0
+editor/scale_with_editor_scale=false
+editor/convert_colors_with_editor_theme=false

graph_node_renderer/textures/arrow-up-icon.svg

@@ -0,0 +1 @@
+<svg height="16" viewBox="0 0 16 16" width="16" xmlns="http://www.w3.org/2000/svg"><path d="M8 11V4L4 8m4-4 4 4" fill="none" stroke-linecap="round" stroke-linejoin="round" stroke-width="2" stroke="#e0e0e0"/></svg>

graph_node_renderer/textures/arrow-up-icon.svg.import

@@ -0,0 +1,37 @@
+[remap]
+
+importer="texture"
+type="CompressedTexture2D"
+uid="uid://bepbho6of3lad"
+path="res://.godot/imported/arrow-up-icon.svg-e0c45dce0c11c3066f4517489a55f98f.ctex"
+metadata={
+"vram_texture": false
+}
+
+[deps]
+
+source_file="res://graph_node_renderer/textures/arrow-up-icon.svg"
+dest_files=["res://.godot/imported/arrow-up-icon.svg-e0c45dce0c11c3066f4517489a55f98f.ctex"]
+
+[params]
+
+compress/mode=0
+compress/high_quality=false
+compress/lossy_quality=0.7
+compress/hdr_compression=1
+compress/normal_map=0
+compress/channel_pack=0
+mipmaps/generate=false
+mipmaps/limit=-1
+roughness/mode=0
+roughness/src_normal=""
+process/fix_alpha_border=true
+process/premult_alpha=false
+process/normal_map_invert_y=false
+process/hdr_as_srgb=false
+process/hdr_clamp_exposure=false
+process/size_limit=0
+detect_3d/compress_to=1
+svg/scale=1.0
+editor/scale_with_editor_scale=false
+editor/convert_colors_with_editor_theme=false

graph_node_renderer/textures/group_icon.svg

@@ -0,0 +1 @@
+<svg height="16" viewBox="0 0 16 16" width="16" xmlns="http://www.w3.org/2000/svg"><path d="M7 1v6H1v8h8V9h6V1zm2 2h4v4H9z" fill="#e0e0e0" fill-opacity=".4"/><path d="M1 1v2h2V1H1zm12 0v2h2V1h-2zM1 13v2h2v-2H1zm12 0v2h2v-2h-2z" fill="#fff"/></svg>

graph_node_renderer/textures/group_icon.svg.import

@@ -0,0 +1,37 @@
+[remap]
+
+importer="texture"
+type="CompressedTexture2D"
+uid="uid://ysy33f5r2ji3"
+path="res://.godot/imported/group_icon.svg-553babd1069b83fbb64a3e7775cbe41e.ctex"
+metadata={
+"vram_texture": false
+}
+
+[deps]
+
+source_file="res://graph_node_renderer/textures/group_icon.svg"
+dest_files=["res://.godot/imported/group_icon.svg-553babd1069b83fbb64a3e7775cbe41e.ctex"]
+
+[params]
+
+compress/mode=0
+compress/high_quality=false
+compress/lossy_quality=0.7
+compress/hdr_compression=1
+compress/normal_map=0
+compress/channel_pack=0
+mipmaps/generate=false
+mipmaps/limit=-1
+roughness/mode=0
+roughness/src_normal=""
+process/fix_alpha_border=true
+process/premult_alpha=false
+process/normal_map_invert_y=false
+process/hdr_as_srgb=false
+process/hdr_clamp_exposure=false
+process/size_limit=0
+detect_3d/compress_to=1
+svg/scale=1.0
+editor/scale_with_editor_scale=false
+editor/convert_colors_with_editor_theme=false

graph_node_renderer/textures/load-icon.svg

@@ -0,0 +1 @@
+<svg height="16" viewBox="0 0 16 16" width="16" xmlns="http://www.w3.org/2000/svg"><path d="M3 2a2 2 0 0 0-2 2v9a2 2 0 0 0 2 2h9c1.105 0 1.818-.91 2-2l1-6a1 1 0 0 0-1-1H6c-.552 0-.909.455-1 1l-1 6c-.091.545-.448 1-1 1a1 1 0 0 1-1-1V4a1 1 0 0 1 1-1h2a1 1 0 0 1 1 1 1 1 0 0 0 1 1h5a1 1 0 0 0-1-1H7a2 2 0 0 0-2-2H3z" fill="#e0e0e0"/></svg>

graph_node_renderer/textures/load-icon.svg.import

@@ -0,0 +1,37 @@
+[remap]
+
+importer="texture"
+type="CompressedTexture2D"
+uid="uid://bbyje126vhdbe"
+path="res://.godot/imported/load-icon.svg-fefb135ef5d746efaeb8c59f181e864e.ctex"
+metadata={
+"vram_texture": false
+}
+
+[deps]
+
+source_file="res://graph_node_renderer/textures/load-icon.svg"
+dest_files=["res://.godot/imported/load-icon.svg-fefb135ef5d746efaeb8c59f181e864e.ctex"]
+
+[params]
+
+compress/mode=0
+compress/high_quality=false
+compress/lossy_quality=0.7
+compress/hdr_compression=1
+compress/normal_map=0
+compress/channel_pack=0
+mipmaps/generate=false
+mipmaps/limit=-1
+roughness/mode=0
+roughness/src_normal=""
+process/fix_alpha_border=true
+process/premult_alpha=false
+process/normal_map_invert_y=false
+process/hdr_as_srgb=false
+process/hdr_clamp_exposure=false
+process/size_limit=0
+detect_3d/compress_to=1
+svg/scale=1.0
+editor/scale_with_editor_scale=false
+editor/convert_colors_with_editor_theme=false

graph_node_renderer/toast_renderer.gd

@@ -16,15 +16,21 @@ const INFO_ICON = preload("res://graph_node_renderer/textures/info_icon.svg")
 
 
 func _ready() -> void:
+	for i in DeckHolder.logger.toast_history.duplicate():
+		_on_logger_toast(i.text, i.type)
 	DeckHolder.logger.log_toast.connect(_on_logger_toast)
 
 
 func _on_logger_toast(text: String, type: Logger.LogType) -> void:
+	DeckHolder.logger.toast_history.remove_at(0)
 	var panel := PanelContainer.new()
+	panel.mouse_filter = Control.MOUSE_FILTER_IGNORE
 	panel.theme_type_variation = &"ToastPanel"
 	var hb := HBoxContainer.new()
+	hb.mouse_filter = Control.MOUSE_FILTER_IGNORE
 	var icon := TextureRect.new()
 	icon.expand_mode = TextureRect.EXPAND_FIT_WIDTH_PROPORTIONAL
+	icon.mouse_filter = Control.MOUSE_FILTER_IGNORE
 	
 	match type:
 		Logger.LogType.INFO:
@@ -36,6 +42,7 @@ func _on_logger_toast(text: String, type: Logger.LogType) -> void:
 	
 	var label := Label.new()
 	label.text = text
+	label.mouse_filter = Control.MOUSE_FILTER_IGNORE
 	
 	hb.add_child(icon)
 	hb.add_child(label)

graph_node_renderer/toast_renderer.tscn

@@ -5,6 +5,7 @@
 [node name="ToastRenderer" type="Control"]
 layout_mode = 3
 anchors_preset = 0
+mouse_filter = 2
 script = ExtResource("1_446pb")
 
 [node name="VBoxContainer" type="VBoxContainer" parent="."]
@@ -21,7 +22,5 @@ offset_right = -32.0
 offset_bottom = -32.0
 grow_horizontal = 0
 grow_vertical = 0
+mouse_filter = 2
 alignment = 2
-
-[node name="PanelContainer" type="PanelContainer" parent="VBoxContainer"]
-layout_mode = 2

main.gd

@@ -27,6 +27,7 @@ func _on_deck_holder_renderer_quit_completed() -> void:
 	# will be used later to make sure both default and rpc are finished processing
 	deck_holder_renderer_finished = true
 	
+	DeckHolder.pre_exit_cleanup()
 	get_tree().quit()