Connects to the @detailed_signal of @source only when the current state of the state machine is @state.
The state the signal connection should exist within
the source object to connect to
The detailed signal of @source to connect.
The callback to execute upon signal emission.
The user data for @callback.
signal connection flags.
See Implementation
Connects to the @detailed_signal of @source only when the current state of the state machine is @state.