signal callback delegate or function to connect
void callback(webkitwebprocessextension.user_message.UserMessage message, webkitwebprocessextension.web_process_extension.WebProcessExtension webProcessExtension)
message the #WebKitUserMessage received (optional)
webProcessExtension 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 UserMessageReceived signal.
This signal is emitted when a #WebKitUserMessage is received from the #WebKitWebContext corresponding to extension. Messages sent by #WebKitWebContext are always broadcasted to all web extensions and they can't be replied to. Calling webkitwebprocessextension.user_message.UserMessage.sendReply will do nothing.