From fc567391a5420d84ccb1004dc37cbfae3f60a01e Mon Sep 17 00:00:00 2001
From: Christopher Baines <cb15g11@soton.ac.uk>
Date: Sat, 21 Mar 2015 12:34:11 +0000
Subject: Allow for toggling which routes are highlighted

---
 resources/leaflet-route/leaflet-route.js | 16 ++++++++++++++++
 src/leaflet-soton.js                     |  7 ++++++-
 2 files changed, 22 insertions(+), 1 deletion(-)

diff --git a/resources/leaflet-route/leaflet-route.js b/resources/leaflet-route/leaflet-route.js
index 6d820a9..c2ac129 100644
--- a/resources/leaflet-route/leaflet-route.js
+++ b/resources/leaflet-route/leaflet-route.js
@@ -96,6 +96,8 @@ L.Route = L.FeatureGroup.extend({
     highlightRoute: function(id) {
         var layer = this._routeLayers[id];
 
+        layer._lrHighlighted = true;
+
         layer.setStyle({
             weight: 10,
             opacity: 1,
@@ -112,9 +114,23 @@ L.Route = L.FeatureGroup.extend({
 
         layer.bringToFront();
     },
+    toggleRouteHighlight: function(id) {
+        if (this.isRouteHighlighed(id)) {
+            this.resetRoute(id);
+        } else {
+            this.highlightRoute(id);
+        }
+    },
+    isRouteHighlighted: function(id) {
+        var layer = this._routeLayers[id];
+
+        return layer._lrHighlighted === true;
+    },
     resetRoute: function(id) {
         var layer = this._routeLayers[id];
 
+        layer._lrHighlighted = false;
+
         this._routeLayer.resetStyle(layer);
 
         layer.setText(null);
diff --git a/src/leaflet-soton.js b/src/leaflet-soton.js
index 380249b..0be755b 100644
--- a/src/leaflet-soton.js
+++ b/src/leaflet-soton.js
@@ -654,8 +654,13 @@ SELECT * WHERE {\
 
                             var a = L.Control.Route.createRouteLink(routesInfo[name], (function(name) {
                                 return function() {
+                                    var wasHighlighted = routeLayer.isRouteHighlighted(name);
+
                                     routeLayer.resetRoutes();
-                                    routeLayer.highlightRoute(name);
+
+                                    if (!wasHighlighted) {
+                                        routeLayer.highlightRoute(name);
+                                    }
                                 };
                             })(routesInfo[name].properties.name));
 
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