Shared Library Applets

It is possible to make applets which will not be separate processes, but will be loaded directly into the panel. This saves on memory, but can make the panel less stable if the applet is less stable.

Here is an example, George will comment on stuff unless I sleep:

Example 16. piCommander

#include <config.>
#include <applet-widget.h>

typedef struct {
	GtkWidget *applet;
	GtkWidget *fentry;
	GtkWidget *gentry;
	GtkWidget *entry;
} PicoData;

static void
entry_activate (GtkWidget *w, PicoData *pico)
	char *s;
	s = gtk_editable_get_chars (GTK_EDITABLE (pico->entry), 0, -1);
	gtk_editable_delete_text (GTK_EDITABLE (pico->entry), 0, -1);
	if (strlen (s) == 0) {
		g_free (s);

	gnome_execute_shell (NULL, s);

	gnome_entry_save_history (GNOME_ENTRY (pico->gentry));
	gnome_config_sync ();

	g_free (s);	

static int
applet_save_session (GtkWidget *applet,
		     const char *privcfgpath,
		     const char *globcfgpath,
		     PicoData *pico)
	gnome_entry_save_history (GNOME_ENTRY (pico->gentry));
	gnome_config_sync ();
	return FALSE;

static void
applet_destroy (GtkWidget *applet, PicoData *pico)
	g_free (pico);

static CORBA_Object
pico_begin (PortableServer_POA poa,
	    const char *goad_id,
	    const char **params,
	    gpointer *impl_ptr,
	    CORBA_Environment *ev)
	PicoData *pico = g_new0 (PicoData, 1);

	pico->applet = applet_widget_new (goad_id);
	pico->fentry = gnome_file_entry_new ("pico-commander", _("Run..."));
	pico->gentry = gnome_file_entry_gnome_entry (GNOME_FILE_ENTRY (pico->fentry));
	pico->entry = gnome_file_entry_gtk_entry (GNOME_FILE_ENTRY (pico->fentry));

	gnome_entry_set_max_saved (GNOME_ENTRY (pico->gentry), 50);
	gnome_entry_prepend_history (GNOME_ENTRY (pico->gentry), FALSE, "");
	gtk_combo_set_use_arrows_always (GTK_COMBO (pico->gentry), TRUE);

	applet_widget_add (APPLET_WIDGET (pico->applet), pico->fentry);

	gtk_signal_connect (GTK_OBJECT (pico->entry), "activate",
			    GTK_SIGNAL_FUNC (entry_activate), pico);
	gtk_signal_connect (GTK_OBJECT (pico->applet), "save_session",
			    GTK_SIGNAL_FUNC (applet_save_session), pico);
	gtk_signal_connect (GTK_OBJECT (pico->applet), "destroy",
			    GTK_SIGNAL_FUNC (applet_destroy), pico);

	gtk_widget_show_all (pico->applet);

	return applet_widget_corba_activate (APPLET_WIDGET (pico->applet),
					     poa, goad_id, params, 
					     impl_ptr, ev);

static void
pico_end (PortableServer_POA poa,
	  const char *goad_id,
	  gpointer impl_ptr,
	  CORBA_Environment *ev)
	applet_widget_corba_deactivate (poa, goad_id, impl_ptr, ev);

static const char *repo_id[] = { "IDL:GNOME/Applet:1.0", NULL };
static GnomePluginObject applets_list[] = {
	{ repo_id, "pico-commander_applet", NULL, "50 line launcher",
	  &pico_begin, &pico_end },
	{ NULL }

GnomePlugin GNOME_Plugin_info = { applets_list, NULL };