[totem] Prompt the user to save changes to the chapter list before Totem closes

[Philip Withnall <pwithnall src gnome org>]

commit d82b84bbec4c93ef5664b4e061eb9858375d04f3
Author: Philip Withnall <philip tecnocode co uk>
Date:   Mon Dec 20 01:02:16 2010 +0000

    Prompt the user to save changes to the chapter list before Totem closes
    
    Whenever the chapters plugin is deactivated, it will now prompt the user to
    save or discard changes to the current movie's chapter list, if any changes
    are outstanding.

 src/plugins/chapters/totem-chapters.c |   31 +++++++++++++++++++++++++++++++
 1 files changed, 31 insertions(+), 0 deletions(-)
---
diff --git a/src/plugins/chapters/totem-chapters.c b/src/plugins/chapters/totem-chapters.c
index 8cfcea7..ed1c4bc 100644
--- a/src/plugins/chapters/totem-chapters.c
+++ b/src/plugins/chapters/totem-chapters.c
@@ -1173,6 +1173,37 @@ impl_deactivate (PeasActivatable *plugin)
 	totem = g_object_get_data (G_OBJECT (plugin), "object");
 	cplugin = TOTEM_CHAPTERS_PLUGIN (plugin);
 
+	/* If there are unsaved changes to the chapter data, ask the user if they'd like to save them. */
+	if (gtk_widget_get_sensitive (cplugin->priv->save_button) == TRUE) {
+		GtkWidget *dialog;
+		GtkWindow *main_window;
+
+		main_window = totem_object_get_main_window (totem);
+		dialog = gtk_message_dialog_new (main_window, GTK_DIALOG_MODAL | GTK_DIALOG_DESTROY_WITH_PARENT,
+		                                 GTK_MESSAGE_QUESTION, GTK_BUTTONS_NONE,
+		                                 _("Save changes to chapter list before closing?"));
+		g_object_unref (main_window);
+
+		gtk_dialog_add_buttons (GTK_DIALOG (dialog),
+		                        /* Translators: close Totem without saving changes to the chapter list of the current movie. */
+		                        _("Close without Saving"), GTK_RESPONSE_CLOSE,
+		                        /* Translators: save changes to the chapter list of the current movie before closing Totem. */
+		                        _("Save"), GTK_RESPONSE_OK,
+		                        NULL);
+		gtk_message_dialog_format_secondary_text (GTK_MESSAGE_DIALOG (dialog),
+		                                          _("If you don't save, changes to the chapter list will be lost."));
+
+		if (gtk_dialog_run (GTK_DIALOG (dialog)) == GTK_RESPONSE_OK) {
+			/* Save the chapter list before closing */
+			save_button_clicked_cb (GTK_BUTTON (cplugin->priv->save_button), cplugin);
+
+			/* Prevent it being cancelled further down in this function */
+			cplugin->priv->cancellable[1] = NULL;
+		}
+
+		gtk_widget_destroy (dialog);
+	}
+
 	/* FIXME: do not cancel async operation if any */
 
 	g_signal_handlers_disconnect_by_func (G_OBJECT (totem),