Re: Bonobo Unique Application

On 9 Apr 2003, Gustavo J. A. M.  Carneiro wrote:

>   The following patches implement "Unique Application" (TM) in
> libbonobo.  It is an attempt to automate/simplify the code that ensures
> that only one application instance is running per display[1], as seen in
> galeon and gnome-terminal, for example.
> 
>   Summary of bonobo-activation changes:
>         - There is a special flag in
>         Bonobo::ObjectDirectory::register_new to make it possible to
>         register a server without a corresponding .server file;
>         - Bonobo::ObjectDirectory::register_new also returns the
>         existing object, in case one has been registered earlier.
> 
>   Summary of libbonobo changes:
>         - A Bonobo::Application interface and BonoboApplication
>         implementation, which represents the unique application server.
>         - A BonoboAppClient which can send messages to the
>         Bonobo::Application.  The relevant interface method is:
> 
> +       interface Application : Bonobo::Unknown {
> +                typedef sequence<any> ArgList;
> +                  // Send a message to the application
> +               any message (in string msg, in ArgList args);
> +
> +       };
> 
>         So, you can send any message you like. There is an application
>         API for sending messages, eg.
>         
> retval = bonobo_app_client_msg_send (client, "msg",
>                                      G_TYPE_FLOAT, 1.0,
>                                      G_TYPE_INT, 2,
>                                      G_TYPE_NONE);
> (retval is a GValue, the return value for the message)
> 
>         For receiving messages, connect the signal "message" on the
>         BonoboApplication object:

You need to queue the signal emission in an idle, or you'll create lots of 
reentrancy bugs.

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 Alexander Larsson                                            Red Hat, Inc 
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