[glib] Replace "gio-desktop-app-info-lookup" extension point

[Bastien Nocera <hadess src gnome org>]

commit 9b262f1c5fe5a6fd879f17cd7b80d8c54e33d80c
Author: Bastien Nocera <hadess hadess net>
Date:   Tue Oct 5 15:02:37 2010 +0100

    Replace "gio-desktop-app-info-lookup" extension point
    
    With a native version, that looks for desktop items supporting
    x-scheme-handler/foo, when looking for a handler for the "foo"
    URI scheme handler.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=631410

 gio/gdesktopappinfo.c |   93 ++++--------------------------------------------
 gio/gdesktopappinfo.h |   36 -------------------
 gio/gio.symbols       |    1 -
 gio/giomodule.c       |    5 ---
 4 files changed, 8 insertions(+), 127 deletions(-)
---
diff --git a/gio/gdesktopappinfo.c b/gio/gdesktopappinfo.c
index c38726c..8047d9c 100644
--- a/gio/gdesktopappinfo.c
+++ b/gio/gdesktopappinfo.c
@@ -1838,57 +1838,18 @@ g_app_info_get_default_for_type (const char *content_type,
 GAppInfo *
 g_app_info_get_default_for_uri_scheme (const char *uri_scheme)
 {
-  static gsize lookup = 0;
-  
-  if (g_once_init_enter (&lookup))
-    {
-      gsize setup_value = 1;
-      GDesktopAppInfoLookup *lookup_instance;
-      const char *use_this;
-      GIOExtensionPoint *ep;
-      GIOExtension *extension;
-      GList *l;
-
-      use_this = g_getenv ("GIO_USE_URI_ASSOCIATION");
-      
-      /* Ensure vfs in modules loaded */
-      _g_io_modules_ensure_loaded ();
-      
-      ep = g_io_extension_point_lookup (G_DESKTOP_APP_INFO_LOOKUP_EXTENSION_POINT_NAME);
-
-      lookup_instance = NULL;
-      if (use_this)
-	{
-	  extension = g_io_extension_point_get_extension_by_name (ep, use_this);
-	  if (extension)
-	    lookup_instance = g_object_new (g_io_extension_get_type (extension), NULL);
-	}
-      
-      if (lookup_instance == NULL)
-	{
-	  for (l = g_io_extension_point_get_extensions (ep); l != NULL; l = l->next)
-	    {
-	      extension = l->data;
-	      lookup_instance = g_object_new (g_io_extension_get_type (extension), NULL);
-	      if (lookup_instance != NULL)
-		break;
-	    }
-	}
+  GAppInfo *app_info;
+  char *content_type, *scheme_down;
 
-      if (lookup_instance != NULL)
-	setup_value = (gsize)lookup_instance;
-      
-      g_once_init_leave (&lookup, setup_value);
-    }
+  scheme_down = g_ascii_strdown (uri_scheme, -1);
+  content_type = g_strdup_printf ("x-scheme-handler/%s", scheme_down);
+  g_free (scheme_down);
+  app_info = g_app_info_get_default_for_type (content_type, FALSE);
+  g_free (content_type);
 
-  if (lookup == 1)
-    return NULL;
-
-  return g_desktop_app_info_lookup_get_default_for_uri_scheme (G_DESKTOP_APP_INFO_LOOKUP (lookup),
-							       uri_scheme);
+  return app_info;
 }
 
-
 static void
 get_apps_from_dir (GHashTable *apps, 
                    const char *dirname, 
@@ -2677,41 +2638,3 @@ get_all_desktop_entries_for_mime_type (const char *base_mime_type,
   return desktop_entries;
 }
 
-/* GDesktopAppInfoLookup interface: */
-
-typedef GDesktopAppInfoLookupIface GDesktopAppInfoLookupInterface;
-G_DEFINE_INTERFACE (GDesktopAppInfoLookup, g_desktop_app_info_lookup, G_TYPE_OBJECT)
-
-static void
-g_desktop_app_info_lookup_default_init (GDesktopAppInfoLookupInterface *iface)
-{
-}
-
-/**
- * g_desktop_app_info_lookup_get_default_for_uri_scheme:
- * @lookup: a #GDesktopAppInfoLookup
- * @uri_scheme: a string containing a URI scheme.
- *
- * Gets the default application for launching applications 
- * using this URI scheme for a particular GDesktopAppInfoLookup
- * implementation.
- *
- * The GDesktopAppInfoLookup interface and this function is used
- * to implement g_app_info_get_default_for_uri_scheme() backends
- * in a GIO module. There is no reason for applications to use it
- * directly. Applications should use g_app_info_get_default_for_uri_scheme().
- * 
- * Returns: (transfer full): #GAppInfo for given @uri_scheme or %NULL on error.
- */
-GAppInfo *
-g_desktop_app_info_lookup_get_default_for_uri_scheme (GDesktopAppInfoLookup *lookup,
-						      const char            *uri_scheme)
-{
-  GDesktopAppInfoLookupIface *iface;
-  
-  g_return_val_if_fail (G_IS_DESKTOP_APP_INFO_LOOKUP (lookup), NULL);
-
-  iface = G_DESKTOP_APP_INFO_LOOKUP_GET_IFACE (lookup);
-
-  return (* iface->get_default_for_uri_scheme) (lookup, uri_scheme);
-}
diff --git a/gio/gdesktopappinfo.h b/gio/gdesktopappinfo.h
index 48c9693..d7703f7 100644
--- a/gio/gdesktopappinfo.h
+++ b/gio/gdesktopappinfo.h
@@ -55,42 +55,6 @@ gboolean         g_desktop_app_info_get_is_hidden     (GDesktopAppInfo *info);
 
 void             g_desktop_app_info_set_desktop_env   (const char      *desktop_env);
 
-
-#define G_TYPE_DESKTOP_APP_INFO_LOOKUP           (g_desktop_app_info_lookup_get_type ())
-#define G_DESKTOP_APP_INFO_LOOKUP(obj)           (G_TYPE_CHECK_INSTANCE_CAST ((obj), G_TYPE_DESKTOP_APP_INFO_LOOKUP, GDesktopAppInfoLookup))
-#define G_IS_DESKTOP_APP_INFO_LOOKUP(obj)	 (G_TYPE_CHECK_INSTANCE_TYPE ((obj), G_TYPE_DESKTOP_APP_INFO_LOOKUP))
-#define G_DESKTOP_APP_INFO_LOOKUP_GET_IFACE(obj) (G_TYPE_INSTANCE_GET_INTERFACE ((obj), G_TYPE_DESKTOP_APP_INFO_LOOKUP, GDesktopAppInfoLookupIface))
-
-/**
- * G_DESKTOP_APP_INFO_LOOKUP_EXTENSION_POINT_NAME:
- *
- * Extension point for default handler to URI association. See
- * <link linkend="extending-gio">Extending GIO</link>.
- */
-#define G_DESKTOP_APP_INFO_LOOKUP_EXTENSION_POINT_NAME "gio-desktop-app-info-lookup"
-
-/**
- * GDesktopAppInfoLookup:
- *
- * Interface that is used by backends to associate default
- * handlers with URI schemes.
- */
-typedef struct _GDesktopAppInfoLookup GDesktopAppInfoLookup;
-typedef struct _GDesktopAppInfoLookupIface GDesktopAppInfoLookupIface;
-
-struct _GDesktopAppInfoLookupIface
-{
-  GTypeInterface g_iface;
-
-  GAppInfo * (* get_default_for_uri_scheme) (GDesktopAppInfoLookup *lookup,
-                                             const char            *uri_scheme);
-};
-
-GType     g_desktop_app_info_lookup_get_type                   (void) G_GNUC_CONST;
-
-GAppInfo *g_desktop_app_info_lookup_get_default_for_uri_scheme (GDesktopAppInfoLookup *lookup,
-                                                                const char            *uri_scheme);
-
 G_END_DECLS
 
 #endif /* __G_DESKTOP_APP_INFO_H__ */
diff --git a/gio/gio.symbols b/gio/gio.symbols
index 58e457c..15212ec 100644
--- a/gio/gio.symbols
+++ b/gio/gio.symbols
@@ -114,7 +114,6 @@ g_desktop_app_info_get_type G_GNUC_CONST
 g_desktop_app_info_get_is_hidden
 g_desktop_app_info_set_desktop_env
 g_desktop_app_info_lookup_get_type G_GNUC_CONST
-g_desktop_app_info_lookup_get_default_for_uri_scheme
 #endif
 #endif
 #endif
diff --git a/gio/giomodule.c b/gio/giomodule.c
index 2c221e4..86bf25e 100644
--- a/gio/giomodule.c
+++ b/gio/giomodule.c
@@ -523,11 +523,6 @@ _g_io_modules_ensure_extension_points_registered (void)
     {
       registered_extensions = TRUE;
       
-#ifdef G_OS_UNIX
-      ep = g_io_extension_point_register (G_DESKTOP_APP_INFO_LOOKUP_EXTENSION_POINT_NAME);
-      g_io_extension_point_set_required_type (ep, G_TYPE_DESKTOP_APP_INFO_LOOKUP);
-#endif
-      
       ep = g_io_extension_point_register (G_LOCAL_DIRECTORY_MONITOR_EXTENSION_POINT_NAME);
       g_io_extension_point_set_required_type (ep, G_TYPE_LOCAL_DIRECTORY_MONITOR);