replace PLOTLYENV topojson url setting with 'topojsonURL' config opt

Author: etpinard

src/lib/topojson_utils.js

@@ -13,11 +13,8 @@ topojsonUtils.getTopojsonName = function(geoLayout) {
     ].join('');
 };
 
-topojsonUtils.getTopojsonPath = function(topojsonName) {
-    var topojsonUrl = (window.PLOTLYENV &&
-                       window.PLOTLYENV.TOPOJSON_URL) || './topojson/';
-
-    return topojsonUrl + topojsonName + '.json';
+topojsonUtils.getTopojsonPath = function(topojsonURL, topojsonName) {
+    return topojsonURL + topojsonName + '.json';
 };
 
 topojsonUtils.getTopojsonFeatures = function(trace, topojson) {

src/plot_api/plot_api.js

@@ -471,7 +471,8 @@ function plotGeo(gd) {
             geo = new Plotly.Geo(
                 {
                     id: geoId,
-                    container: fullLayout._geocontainer.node()
+                    container: fullLayout._geocontainer.node(),
+                    topojsonURL: gd._context.topojsonURL
                 },
                 fullLayout
             );

src/plots/geo/geo.js

@@ -22,6 +22,7 @@ function Geo(options, fullLayout) {
 
     this.id = options.id;
     this.container = options.container;
+    this.topojsonURL = options.topojsonURL;
 
     // add a few projection types to d3.geo,
     // a subset of https://github.com/d3/d3-geo-projection
@@ -85,7 +86,10 @@ proto.plot = function(geoData, fullLayout) {
             _this.onceTopojsonIsLoaded(geoData, geoLayout);
         }
         else {
-            topojsonPath = topojsonUtils.getTopojsonPath(_this.topojsonName);
+            topojsonPath = topojsonUtils.getTopojsonPath(
+                _this.topojsonURL,
+                _this.topojsonName
+            );
 
             // N.B this is async
             d3.json(topojsonPath, function(error, topojson) {