From 678112b9263551138dfce89002e2b2cceaa9b39f Mon Sep 17 00:00:00 2001
From: Alessandro Ranellucci <aar@cpan.org>
Date: Fri, 8 Aug 2014 17:18:41 +0200
Subject: [PATCH] Bugfix: spiral vase checkbox couldn't be disabled under some
 circumstances

---
 lib/Slic3r/GUI/Tab.pm | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/lib/Slic3r/GUI/Tab.pm b/lib/Slic3r/GUI/Tab.pm
index 10a04b564..65d7dad6f 100644
--- a/lib/Slic3r/GUI/Tab.pm
+++ b/lib/Slic3r/GUI/Tab.pm
@@ -683,8 +683,15 @@ sub _update {
     
     my $config = $self->{config};
     
+    # we enable spiral vase if other settings are compatible with it
+    # or if it is enabled (this prevents the checkbox from being disabled
+    # when an incompatible setting is set)
+    $self->get_field('spiral_vase')->toggle(
+        ($config->perimeters == 1 && $config->top_solid_layers == 0 && $config->fill_density == 0)
+            || $config->spiral_vase
+    );
+    
     my $have_perimeters = $config->perimeters > 0;
-    $self->get_field('spiral_vase')->toggle($config->perimeters == 1 && $config->top_solid_layers == 0 && $config->fill_density == 0);
     $self->get_field($_)->toggle($have_perimeters)
         for qw(extra_perimeters thin_walls overhangs seam_position external_perimeters_first);