From dab1fa8eaf54a5d0094a8e6972a35a98b7ff50b3 Mon Sep 17 00:00:00 2001
From: Vladimir Agafonkin <agafonkin@gmail.com>
Date: Fri, 22 Nov 2013 00:27:40 +0200
Subject: [PATCH] don't update hash/attrib immediately on move start

Makes panning snappier by avoiding non-critical operations at the very
start.
---
 js/id/behavior/hash.js  | 2 +-
 js/id/ui/attribution.js | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/js/id/behavior/hash.js b/js/id/behavior/hash.js
index 9c7f7175a..447e8f6c1 100644
--- a/js/id/behavior/hash.js
+++ b/js/id/behavior/hash.js
@@ -28,7 +28,7 @@ iD.behavior.Hash = function(context) {
     var move = _.throttle(function() {
         var s1 = formatter(context.map());
         if (s0 !== s1) location.replace(s0 = s1); // don't recenter the map!
-    }, 500);
+    }, 500, {leading: false});
 
     function hashchange() {
         if (location.hash === s0) return; // ignore spurious hashchange events
diff --git a/js/id/ui/attribution.js b/js/id/ui/attribution.js
index 2fef3c390..889e45d2f 100644
--- a/js/id/ui/attribution.js
+++ b/js/id/ui/attribution.js
@@ -73,7 +73,7 @@ iD.ui.Attribution = function(context) {
             .on('change.attribution', update);
 
         context.map()
-            .on('move.attribution', _.throttle(update, 400));
+	    .on('move.attribution', _.throttle(update, 400, {leading: false}));
 
         update();
     };