[gthumb] avoid to activate non-required extensions

[Paolo Bacchilega <paobac src gnome org>]

commit 855be4326df6f7e3cbeb9bbc0cf65e8275fe05a1
Author: Paolo Bacchilega <paobac src gnome org>
Date:   Wed Sep 22 18:07:31 2010 +0200

    avoid to activate non-required extensions
    
    do not activiate the hidden extensions explicitly, they will
    be activated if required by other extensions.

 gthumb/gth-main.c |   20 ++++++++++++++------
 1 files changed, 14 insertions(+), 6 deletions(-)
---
diff --git a/gthumb/gth-main.c b/gthumb/gth-main.c
index e47aa8c..9b8b655 100644
--- a/gthumb/gth-main.c
+++ b/gthumb/gth-main.c
@@ -1246,9 +1246,10 @@ gth_main_activate_extensions (void)
 						"slideshow",
 						"webalbums",
 						NULL };
-	int         i;
-	GSList     *active_extensions;
-	GSList     *scan;
+	int                  i;
+	GSList              *active_extensions;
+	GthExtensionManager *manager;
+	GSList              *scan;
 
 	if (Main->priv->extension_manager == NULL)
 		Main->priv->extension_manager = gth_extension_manager_new ();
@@ -1266,11 +1267,18 @@ gth_main_activate_extensions (void)
 	if (active_extensions == NULL)
 		for (i = 0; default_extensions[i] != NULL; i++)
 			active_extensions = g_slist_prepend (active_extensions, g_strdup (default_extensions[i]));
-
 	active_extensions = gth_extension_manager_order_extensions (Main->priv->extension_manager, active_extensions);
+
+	manager = gth_main_get_default_extension_manager ();
+
 	for (scan = active_extensions; scan; scan = scan->next) {
-		char   *name = scan->data;
-		GError *error = NULL;
+		char                    *name = scan->data;
+		GthExtensionDescription *description;
+		GError                  *error = NULL;
+
+		description = gth_extension_manager_get_description (manager, name);
+		if ((description != NULL) && (description->hidden || description->mandatory))
+			continue;
 
 		if (! gth_extension_manager_activate (Main->priv->extension_manager, name, &error)) {
 			g_warning ("Could not load the '%s' extension: %s", name, error->message);