Re: Embedding components in under 100 lines (Was Re: Embedding gnumeric...)

[sak tribctas gba gov ar]

sorry, can't resist...
this example remind me of the Master Programmer in
http://www.ariel.com.au/jokes/The_Evolution_of_a_Programmer.html

"Iain" <tigermilk@btinternet.com> el día Fri, 1 Sep 2000 14:36:33 +0100, 
escribió:

>>    The document I mentioned above, in the section on CORBA and compound
>> documents, states:
>>
>>   "Gnumeric is also available to other applications as a Bonobo 
component.
>> (Bonobo is the compound document architecture of GNOME).  This enables
>> your application to embed Gnumeric into your application for editing, or
>> displaying information.  *One line of code would achieve all the magic 
you
>> need.*"  [Emphasis mine]
>>
>>    Can somebody clue me in on what this "One line of code" might be?
>> Because I certainly haven't been able to figure it out from reading the
>> mailing list archives, or the bonobo/samples codes (which imply that one
>> *thousand* lines of code is probably closer to the truth),
>
>Well, 1 line is only true if you have your app bonoboised already.
>10 lines is probably more of a reality if you don't.
>
>Here's a short (80ish lines long) program that sticks any bonobo embeddable
>into a GtkWindow.
>
>/* Adding a bonobo component in two functions by Iain Holmes - Mostly 
copied
>from
>    bonobo/samples/compound-document/container/ */
>/* Compile with (all one line):
>gcc -o test-bonobo test.c -g `gnome-config --cflags bonobo gnomeui bonobox`
>`gnome-config --libs bonobo gnomeui bonobox` */
>
>#include <gtk/gtk.h>
>#include <gnome.h>
>#include <bonobo.h>
>
>void
>add_embeddable (GtkWidget *window,
>                char *obj_id)
>{
>  BonoboObjectClient *server;
>  BonoboClientSite *site;
>  BonoboContainer *container;
>  Bonobo_ClientSite corba_client_site;
>
>  BonoboViewFrame *view_frame;
>  GtkWidget *view_widget;
>
>  /* Activate component */
>  server = bonobo_object_activate (obj_id, 0);
>  if (!server) {
>    g_warning ("Error launching %s", obj_id);
>    return;
>  }
>
>  /* New bonobo container to hold the embeddable */
>  container = bonobo_container_new ();
>
>  /* New client site for the container */
>  site = bonobo_client_site_new (container);
>  corba_client_site = bonobo_client_site_corba_object_create (BONOBO_OBJECT
>(site));
>
>  /* Not sure why we do this twice - Anyone? */
>  site = bonobo_client_site_construct (site, corba_client_site, container);
>
>  if (site) {
>    bonobo_client_site_bind_embeddable (site, server);
>    bonobo_object_unref (BONOBO_OBJECT (server));
>    bonobo_container_add (container, BONOBO_OBJECT (site));
>
>    /* Create a new view of the embeddable */
>    view_frame = bonobo_client_site_new_view (site, NULL);
>
>    /* Get the widget */
>    view_widget = bonobo_view_frame_get_wrapper (view_frame);
>
>    /* Bung it in the window */
>    gtk_container_add (GTK_CONTAINER (window), view_widget);
>    gtk_widget_show (view_widget);
>  }
>}
>
>int main (int argc,
>          char **argv)
>{
>  GtkWidget *window;
>  CORBA_ORB orb;
>  CORBA_Environment ev;
>  char *required_interfaces [2] = {"IDL:Bonobo/Embeddable:1.0", NULL };
>  char *obj_id;
>
>  gnome_init ("Bonobo Example", "1.0", argc, argv);
>  orb = oaf_init (argc, argv);
>
>  if (bonobo_init (orb, NULL, NULL) == FALSE)
>    g_error ("Could not initialize Bonobo!\n");
>
>  window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
>  gtk_window_set_title (GTK_WINDOW (window), "Bonobo Example");
>
>  /* Select the component */
>  obj_id = bonobo_selector_select_id ("Select an embeddable component",
>                                      (const char **) required_interfaces);
>
>  add_embeddable (window, obj_id);
>
>  gtk_widget_show (window);
>  bonobo_main ();
>}
>
>Okay, so it lacks a few things (activation, UIHandlers) but these things 
are
>fairly
>simple to add.
>
>iain