[totem] save-file: Fix "Make available offline" not appearing inside Flatpak

[Bastien Nocera <hadess src gnome org>]

commit c0eade134faaa61c27939f1f442c1600bb84394a
Author: Bastien Nocera <hadess hadess net>
Date:   Tue Feb 5 17:10:35 2019 +0100

    save-file: Fix "Make available offline" not appearing inside Flatpak
    
    Don't check for nautilus' presence by checking for "nautilus" being
    available as a binary, as that won't work in Flatpak. Instead, delay the
    check until we try to copy files, and throw an error in the GUI if
    it's not contactable via D-Bus.
    
    Closes: #290

 src/plugins/save-file/totem-save-file.c | 28 +++++++++++++---------------
 1 file changed, 13 insertions(+), 15 deletions(-)
---
diff --git a/src/plugins/save-file/totem-save-file.c b/src/plugins/save-file/totem-save-file.c
index 65c37fd44..b7aa4c90c 100644
--- a/src/plugins/save-file/totem-save-file.c
+++ b/src/plugins/save-file/totem-save-file.c
@@ -56,8 +56,9 @@ typedef struct {
 TOTEM_PLUGIN_REGISTER(TOTEM_TYPE_SAVE_FILE_PLUGIN, TotemSaveFilePlugin, totem_save_file_plugin)
 
 static void
-copy_uris_with_nautilus (const char *source,
-                        const char *dest)
+copy_uris_with_nautilus (TotemSaveFilePlugin *pi,
+                        const char          *source,
+                        const char          *dest)
 {
        GError *error = NULL;
        GDBusProxyFlags flags;
@@ -78,7 +79,15 @@ copy_uris_with_nautilus (const char *source,
                                               NULL, /* GCancellable */
                                               &error);
        if (proxy == NULL) {
-               g_warning ("Could not contact nautilus: %s", error->message);
+               GtkWindow *main_window;
+
+               main_window = totem_object_get_main_window (pi->priv->totem);
+               totem_interface_error (_("The video could not be made available offline."),
+                                      /* translators: “Files” refers to nautilus' name */
+                                      _("“Files” is not available."), main_window);
+               g_object_unref (main_window);
+
+               g_debug ("Could not contact nautilus: %s", error->message);
                g_error_free (error);
                return;
        }
@@ -191,7 +200,7 @@ totem_save_file_plugin_copy (GSimpleAction       *action,
                dest_uri = g_filename_to_uri (dest_path, NULL, NULL);
                g_free (dest_path);
 
-               copy_uris_with_nautilus (pi->priv->mrl, dest_uri);
+               copy_uris_with_nautilus (pi, pi->priv->mrl, dest_uri);
                g_free (dest_uri);
 
                /* We don't call Totem to bookmark it, as Tracker should pick it up */
@@ -326,16 +335,9 @@ impl_activate (PeasActivatable *plugin)
        TotemSaveFilePluginPrivate *priv = pi->priv;
        GMenu *menu;
        GMenuItem *item;
-       char *path;
        char *mrl;
        const char * const accels[] = { "<Primary>S", "Save", NULL };
 
-       /* make sure nautilus is in the path */
-       path = g_find_program_in_path ("nautilus");
-       if (!path)
-               return;
-       g_free (path);
-
        priv->totem = g_object_get_data (G_OBJECT (plugin), "object");
        priv->bvw = totem_object_get_video_widget (priv->totem);
 
@@ -379,10 +381,6 @@ impl_deactivate (PeasActivatable *plugin)
        TotemSaveFilePlugin *pi = TOTEM_SAVE_FILE_PLUGIN (plugin);
        TotemSaveFilePluginPrivate *priv = pi->priv;
 
-       /* impl_activate() exited early */
-       if (priv->totem == NULL)
-               return;
-
        g_signal_handlers_disconnect_by_func (priv->totem, totem_save_file_file_opened, plugin);
        g_signal_handlers_disconnect_by_func (priv->totem, totem_save_file_file_closed, plugin);
        g_signal_handlers_disconnect_by_func (priv->bvw, totem_save_file_download_filename, plugin);