From 052a79cc0b00ea1ee6ecba1b5f2547fd3bb5e3fd Mon Sep 17 00:00:00 2001
From: Norbert Renner <norbert.renner@gmx.de>
Date: Wed, 8 Jun 2016 12:06:30 +0200
Subject: [PATCH] Option to remove default base layers (#27)

---
 config.js   | 3 +++
 js/index.js | 9 ++++++++-
 2 files changed, 11 insertions(+), 1 deletion(-)

diff --git a/config.js b/config.js
index e354d84..7182a85 100644
--- a/config.js
+++ b/config.js
@@ -66,6 +66,9 @@
     // External URL for key retrieval, does not work locally on desktop
     BR.conf.bingKeyUrl = 'http://norbertrenner.de/key/bing.php';
 
+    // Removes default base layers when 'true'. Useful for only having custom layers (see below).
+    BR.conf.clearBaseLayers = false;
+
     // Add custom tile layers
     // URL template see http://leafletjs.com/reference.html#tilelayer
     // Multiple entries separated by comma (,)
diff --git a/js/index.js b/js/index.js
index 034d2f7..672652b 100644
--- a/js/index.js
+++ b/js/index.js
@@ -74,7 +74,6 @@
         });
 
         map = new L.Map('map', {
-            layers: [osm], 
             center: new L.LatLng(50.99, 9.86), 
             zoom: 6,
             worldCopyJump: true
@@ -97,11 +96,19 @@
              'Hiking (Waymarked Trails)': hiking
         };
 
+        if (BR.conf.clearBaseLayers) {
+            baseLayers = {};
+        }
         for (i in BR.conf.baseLayers) {
             if (BR.conf.baseLayers.hasOwnProperty(i)) {
                 baseLayers[i] = L.tileLayer(BR.conf.baseLayers[i]);
             }
         }
+        // after applying custom base layer configurations, add first base layer to map
+        var firstLayer = baseLayers[Object.keys(baseLayers)[0]];
+        if (firstLayer) {
+            map.addLayer(firstLayer);
+        }
 
         layersControl = L.control.layers(baseLayers, overlays).addTo(map);