signal callback delegate or function to connect
void callback(gtksource.completion_proposal.CompletionProposal completionProposal)
completionProposal the instance the signal is connected to (optional)
Yes.After to execute callback after default handler, No.After to execute before (default)
Signal ID
Connect to Changed signal.
Emitted when the proposal has changed. The completion popup will react to this by updating the shown information.