From 074d61a55e32e83173ec12b2eb34b78ddaaf0ef1 Mon Sep 17 00:00:00 2001
From: Bruno de Oliveira Abinader <bruno@mapbox.com>
Date: Wed, 14 Oct 2015 22:39:42 -0700
Subject: [PATCH] [core] MapContext setStyle{URL,JSON} should ignore redundant
 calls

Our engine should be robust enough to ignore redundant calls and avoid
triggering a whole style update if the style URL and/or JSON are the
same.
---
 src/mbgl/map/map_context.cpp | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/src/mbgl/map/map_context.cpp b/src/mbgl/map/map_context.cpp
index 977dcf92a..a383e6035 100644
--- a/src/mbgl/map/map_context.cpp
+++ b/src/mbgl/map/map_context.cpp
@@ -92,6 +92,10 @@ void MapContext::triggerUpdate(const TransformState& state, const Update flags)
 }
 
 void MapContext::setStyleURL(const std::string& url) {
+    if (styleURL == url) {
+        return;
+    }
+
     FileSource* fs = util::ThreadContext::getFileSource();
 
     if (styleRequest) {
@@ -121,6 +125,10 @@ void MapContext::setStyleURL(const std::string& url) {
 }
 
 void MapContext::setStyleJSON(const std::string& json, const std::string& base) {
+    if (styleJSON == json) {
+        return;
+    }
+
     styleURL.clear();
     styleJSON = json;