From 8ef1b34c3b6e30508b91e965ac2b56bf52d9ae15 Mon Sep 17 00:00:00 2001
From: tim-herbst <herbst.tim@icloud.com>
Date: Sun, 3 Jan 2021 14:45:14 +0100
Subject: [PATCH] dynamically add and remove legend with checkbox-toggle

---
 .../project-3/frontend/src/app/service/map.service.ts     | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/projects/project-3/frontend/src/app/service/map.service.ts b/projects/project-3/frontend/src/app/service/map.service.ts
index aad157d..daee81b 100644
--- a/projects/project-3/frontend/src/app/service/map.service.ts
+++ b/projects/project-3/frontend/src/app/service/map.service.ts
@@ -155,9 +155,13 @@ export class MapService {
       marker.on('mouseout', e => e.target.closePopup());
       this.drawLineOnMiniMap(marker, point);
       this.markerLayer.push(marker);
-      this.miniMap.fitBounds(L.featureGroup([...this.markerLayer, this.dashBoardMarker]).getBounds());
+      this.miniMap.fitBounds(L.featureGroup([this.dashBoardMarker, ...this.markerLayer]).getBounds());
+    }
+    if (this.polylineLayer.length === 0) {
+      this.legend.remove();
+    } else {
+      this.drawLegend();
     }
-    this.drawLegend();
   }
 
   drawLegend(): void {