options: support deferred writes when saving bundles

The mapping window has 13 bundles total in use. Setting them all can take up
to a large fraction of a second on some windows filesystems. Do a single
config write instead.

2 files changed, 8 insertions, 2 deletions

diff --git a/spline-widget/spline.cpp b/spline-widget/spline.cpp
index da67f0d4..c71076f4 100644
--- a/spline-widget/spline.cpp
+++ b/spline-widget/spline.cpp
@@ -254,10 +254,15 @@ void spline::reload()
         s->b->reload();
 }
 
-void spline::save()
+void spline::save(QSettings& settings)
 {
     if (s && s->b)
-        s->b->save();
+        s->b->save_deferred(settings);
+}
+
+void spline::save()
+{
+    save(*group::ini_file());
 }
 
 void spline::set_bundle(bundle b)
diff --git a/spline-widget/spline.hpp b/spline-widget/spline.hpp
index 4f6531b9..5b0b3afc 100644
--- a/spline-widget/spline.hpp
+++ b/spline-widget/spline.hpp
@@ -70,6 +70,7 @@ private:
 
 public:
     void reload();
+    void save(QSettings& s);
     void save();
     void set_bundle(bundle b);