followup to db590ac: improve group node renderer UX

graph_node_renderer/deck_node_renderer_graph_node.gd

@@ -51,6 +51,8 @@ func _ready() -> void:
 	node.renamed.connect(_on_node_renamed)
 	if node.node_type == "group_node":
 		get_titlebar_hbox().tooltip_text = "Group %s" % node.group_id.left(8)
+		if get_child_count() == 0:
+			create_group_help_text()
 	
 	size = node.get_meta("size", Vector2())
 
@@ -112,8 +114,11 @@ func _on_node_ports_updated() -> void:
 
 	for port in node.get_all_ports():
 		update_port(port)
-		
+	
+	if get_child_count() == 0:
+		create_group_help_text()
 	await get_tree().process_frame
+	
 	size = Vector2()
 
 
@@ -121,6 +126,12 @@ func _on_node_renamed(new_name: String) -> void:
 	title = new_name
 
 
+func create_group_help_text() -> void:
+	var l := Label.new()
+	l.text = RendererShortcuts.interpolate_string("This group node has no used ports.\nPress {enter_group} to enter and edit it to see changes reflected.")
+	add_child(l)
+
+
 func update_port(port: Port) -> void:
 	var descriptor_split := port.descriptor.split(":")
 	var d: DescriptorContainer

graph_node_renderer/shortcuts/renderer_shortcuts.gd

@@ -100,6 +100,17 @@ static func get_full_map() -> Dictionary:
 	return defaults_copy
 
 
+static func get_full_map_string() -> Dictionary:
+	var full_map := get_full_map()
+	var res := {}
+	for key: String in full_map:
+		if key.begins_with("_"):
+			continue
+		res[key] = (full_map[key] as Shortcut).get_as_text()
+	return res
+	
+
+
 ## Returns the default [Shortcut] for the given [param action].
 static func get_default(action: String) -> Shortcut:
 	return defaults.get(action)
@@ -173,3 +184,9 @@ static func map_from_dict(d: Dictionary) -> void:
 static func commit_overrides() -> void:
 	RendererPersistence.set_value(PERSISTENCE_NAMESPACE, PERSISTENCE_CHANNEL, PERSISTENCE_KEY, map_to_dict())
 	RendererPersistence.commit(PERSISTENCE_NAMESPACE, PERSISTENCE_CHANNEL)
+
+
+## Replaces shortcut names with their keybinds in [param s].[br]
+## Example usage: [code]interpolate_string("Press {new_deck} to open a new deck.")[/code]
+static func interpolate_string(s: String) -> String:
+	return s.format(get_full_map_string())