From 525994082c614f64ef90ea6162ccc27bec4171fa Mon Sep 17 00:00:00 2001
From: Bryan Housel <bryan@mapbox.com>
Date: Fri, 24 Mar 2017 21:43:29 -0400
Subject: [PATCH] Support "top" placement so we can tooltip the navigation menu

---
 modules/ui/curtain.js | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/modules/ui/curtain.js b/modules/ui/curtain.js
index bbdedb219..e309b8bf9 100644
--- a/modules/ui/curtain.js
+++ b/modules/ui/curtain.js
@@ -96,8 +96,13 @@ export function uiCurtain() {
                 pos = [box.left - 200, box.top + box.height / 2 - dimensions[1] / 2];
 
             } else {
-                side = 'bottom';
-                pos = [box.left, box.top + box.height];
+                // need real tooltip height to calculate "top" placement
+                tooltip
+                    .attr('class', 'curtain-tooltip tooltip in')
+                    .call(uiToggle(true));
+                var tip = tooltip.node().getBoundingClientRect();
+                side = 'top';
+                pos = [box.left + box.width / 2 - dimensions[0] / 2, box.top - tip.height];
             }
 
             pos = [