From 3089b71705ec3959e895b8e4bf3caabb9a7e8ee6 Mon Sep 17 00:00:00 2001
From: Yohan Boniface <yb@enix.org>
Date: Sun, 8 Nov 2020 16:49:23 +0100
Subject: [PATCH] Prevent to redraw a marker when setting invalid latlng from
 edit form

cf #799
---
 umap/static/umap/js/umap.core.js     | 4 ++++
 umap/static/umap/js/umap.features.js | 1 +
 2 files changed, 5 insertions(+)

diff --git a/umap/static/umap/js/umap.core.js b/umap/static/umap/js/umap.core.js
index 07bab3cc..9b9d5e01 100644
--- a/umap/static/umap/js/umap.core.js
+++ b/umap/static/umap/js/umap.core.js
@@ -546,3 +546,7 @@ L.U.Orderable = L.Evented.extend({
     }
 
 });
+
+L.LatLng.prototype.isValid = function () {
+    return !isNaN(this.lat) && !isNaN(this.lng);
+}
diff --git a/umap/static/umap/js/umap.features.js b/umap/static/umap/js/umap.features.js
index 54a0394c..ce17aa0d 100644
--- a/umap/static/umap/js/umap.features.js
+++ b/umap/static/umap/js/umap.features.js
@@ -585,6 +585,7 @@ L.U.Marker = L.Marker.extend({
         ];
         var builder = new L.U.FormBuilder(this, coordinatesOptions, {
             callback: function () {
+                if (!this._latlng.isValid()) return;
                 this._redraw();
                 this.bringToCenter();
             },