[totem/wip/hadess/save-file-fixes: 5/6] save-file: Add support for nautilus >= 3.30

[Bastien Nocera <hadess src gnome org>]

commit baf6ee7b57d143ee330bb4bf4664c8bdf8f68fa4
Author: Bastien Nocera <hadess hadess net>
Date:   Tue Feb 5 18:08:38 2019 +0100

    save-file: Add support for nautilus >= 3.30
    
    The CopyFile API was removed without warning, update our code to use
    CopyURIs instead.
    
    See https://gitlab.gnome.org/GNOME/nautilus/commit/60c3f2ea839deaf3040872d1ee43d4fea22d543b
    
    Closes: #285

 src/plugins/save-file/totem-save-file.c | 26 ++++++++++++++++++++++----
 1 file changed, 22 insertions(+), 4 deletions(-)
---
diff --git a/src/plugins/save-file/totem-save-file.c b/src/plugins/save-file/totem-save-file.c
index 85f6a38f5..6d20c1868 100644
--- a/src/plugins/save-file/totem-save-file.c
+++ b/src/plugins/save-file/totem-save-file.c
@@ -64,6 +64,7 @@ copy_uris_with_nautilus (TotemSaveFilePlugin *pi,
        GError *error = NULL;
        GDBusProxyFlags flags;
        GDBusProxy *proxy;
+       GVariant *ret;
 
        g_return_if_fail (source != NULL);
        g_return_if_fail (dest_dir != NULL);
@@ -92,12 +93,29 @@ copy_uris_with_nautilus (TotemSaveFilePlugin *pi,
                return;
        }
 
-       if (g_dbus_proxy_call_sync (proxy,
-                               "CopyFile", g_variant_new ("(&s&s&s&s)", source, "", dest_dir, dest_name),
-                               G_DBUS_CALL_FLAGS_NONE,
-                               -1, NULL, &error) == FALSE) {
+       ret = g_dbus_proxy_call_sync (proxy,
+                                     "CopyFile", g_variant_new ("(&s&s&s&s)", source, "", dest_dir, 
dest_name),
+                                     G_DBUS_CALL_FLAGS_NONE,
+                                     -1, NULL, &error);
+
+       if (ret == NULL) {
+               /* nautilus >= 3.30.0? */
+               if (g_error_matches (error, G_DBUS_ERROR, G_DBUS_ERROR_UNKNOWN_METHOD)) {
+                       const char *sources[2] = { source, NULL };
+
+                       g_clear_error (&error);
+                       ret = g_dbus_proxy_call_sync (proxy,
+                                                     "CopyURIs", g_variant_new ("(^ass)", sources, dest_dir),
+                                                     G_DBUS_CALL_FLAGS_NONE,
+                                                     -1, NULL, &error);
+               }
+       }
+
+       if (ret == NULL) {
                g_warning ("Could not get nautilus to copy file: %s", error->message);
                g_error_free (error);
+       } else {
+               g_variant_unref (ret);
        }
 
        g_object_unref (proxy);