From 507a5a2bdfba9f699a01b10013ba3600c385a419 Mon Sep 17 00:00:00 2001
From: YUKI Hiroshi <shimoda@clear-code.com>
Date: Wed, 20 Nov 2013 20:36:33 +0900
Subject: [PATCH] Show navigation toolbar on OS X without custom background,
 for Australis

---
 chrome.manifest                           |  1 +
 skin/classic/treestyletab/Darwin-base.css | 28 +++++++++++++++++++++++
 2 files changed, 29 insertions(+)
 create mode 100644 skin/classic/treestyletab/Darwin-base.css

diff --git a/chrome.manifest b/chrome.manifest
index 25d1a925..18f9d60b 100644
--- a/chrome.manifest
+++ b/chrome.manifest
@@ -34,6 +34,7 @@ skin	treestyletab-group	classic/1.0	skin/classic/treestyletab-group-basic/
 skin	treestyletab-group	classic/1.0	skin/classic/treestyletab-group-aero/	os=WINNT osversion>=6
 
 override chrome://treestyletab/skin/platform-base.css	chrome://treestyletab/skin/dummy.css	os=Darwin
+override chrome://treestyletab/skin/platform-base.css	chrome://treestyletab/skin/Darwin-base.css	os=Darwin appversion>=28.0a1
 override chrome://treestyletab/skin/platform-base.css	chrome://treestyletab/skin/Linux-base.css	os=Linux
 override chrome://treestyletab/skin/platform-base.css	chrome://treestyletab/skin/dummy.css	os=WINNT
 override chrome://treestyletab/skin/platform-styled.css	chrome://treestyletab/skin/Darwin-styled.css	os=Darwin
diff --git a/skin/classic/treestyletab/Darwin-base.css b/skin/classic/treestyletab/Darwin-base.css
new file mode 100644
index 00000000..a00b1f33
--- /dev/null
+++ b/skin/classic/treestyletab/Darwin-base.css
@@ -0,0 +1,28 @@
+@namespace url("http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul");
+
+/**
+ * Cancel "tabs on top" appearance on Australis.
+ * This is possibly moved to /skin/base.css for all platforms.
+ */
+:root:not([treestyletab-tabbar-position="top"])
+  #nav-bar:not(:-moz-lwtheme),
+:root:not([treestyletab-tabbar-position="top"])
+  #nav-bar:not(:-moz-lwtheme):-moz-window-inactive {
+	background: transparent;
+	border-top: none;
+	border-left: none;
+	border-right: none;
+	box-shadow: none;
+}
+
+/**
+ * With Australis, the "back" button in the navigation toolbar is
+ * unexpectedly overwrapped on the border of the expanded titlebar.
+ * This negative margin solves the overwrapping.
+ */
+:root:not([treestyletab-tabbar-position="top"])
+  #nav-bar:not(:-moz-lwtheme),
+:root:not([treestyletab-tabbar-position="top"])
+  #nav-bar:not(:-moz-lwtheme):-moz-window-inactive {
+	margin-top: -4px;
+}