Fix track node to also be able to delete layers

CHANGELOG.md

@@ -1,7 +1,8 @@
 ### Change Log for Node-RED Worldmap
 
- - v2.0.16 - Revert use of ES6 import. Keep IE11 happy for while.
- - v2.0.13 - Fix tracks colour.
+ - v2.0.17 - Let clear command also clear tracks from tracks node
+ - v2.0.16 - Revert use of ES6 import. Keep IE11 happy for while
+ - v2.0.13 - Fix tracks colour
  - v2.0.12 - Ensure default icon is in place if not specified (regression)
  - v2.0.9 - Only update maxage on screen once it exists
  - v2.0.8 - Drop beta flag, re-organise index, js and css files. Now using leaflet 1.4

README.md

@@ -9,7 +9,8 @@ map web page for plotting "things" on.
 
 ### Updates
 
-- v2.0.14 - Revert use of ES6 import.
+- v2.0.17 - Let clear command also clear tracks from tracks node
+- v2.0.16 - Revert use of ES6 import. Keep IE11 happy for while
 - v2.0.13 - Fix tracks colour.
 - v2.0.12 - Ensure default icon is in place if not specified (regression)
 - v2.0.9 - Only update maxage on screen once it exists
@@ -296,7 +297,7 @@ Optional properties include
    - **bounds** - sets the bounds of an Overlay-Image. 2 Dimensional Array that defines the top-left and bottom-right Corners (lat/lon Points)
    - **delete** - name or array of names of base layers and/or overlays to delete and remove from layer menu.
  - **heatmap** - set heatmap options object see https://github.com/Leaflet/Leaflet.heat#reference
- - **clear** - layer name - to clear a complete layer and remove from layer menu
+ - **clear** - layer name - to clear a complete layer and remove from layer menu - `{"command":{"clear":"myOldLayer"}}`
  - **panlock** - lock the map area to the current visible area. - `{"command":{"panlock":true}}`
  - **zoomlock** - locks the zoom control to the current value and removes zoom control - `{"command":{"zoomlock":true}}`
  - **hiderightclick** - disables the right click that allows adding or deleting points on the map - `{"command":{"hiderightclick":true}}`
@@ -473,7 +474,9 @@ see https://github.com/cloudybay/leaflet.latlng-graticule for more details about
 
 #### To clear all markers from a layer, or an overlay from the map
 
-    msg.payload.command.clear = "name of your layer/overlay to remove";
+    msg.payload.command.clear = "name of the layer/overlay you wish to clear";
+
+Feeding this into the tracks node will also remove the tracks stored for that layer.
 
 ### Using a local Map Server (WMS server)
 

package.json

@@ -1,6 +1,6 @@
 {
     "name": "node-red-contrib-web-worldmap",
-    "version": "2.0.16",
+    "version": "2.0.17",
     "description": "A Node-RED node to provide a web page of a world map for plotting things on.",
     "dependencies": {
         "cgi": "0.3.1",

worldmap.js

@@ -237,6 +237,15 @@ module.exports = function(RED) {
                     node.send(newmsg);  // send the track
                 }
             }
+            if (msg.hasOwnProperty("payload") && msg.payload.hasOwnProperty("command") && msg.payload.command.hasOwnProperty("clear")) {
+                for (var p in node.pointsarray) {
+                    if (node.pointsarray.hasOwnProperty(p)) {
+                        if (node.pointsarray[p][0].layer === msg.payload.command.clear) {
+                            delete node.pointsarray[p];
+                        }
+                    }
+                }
+            }
         });
 
         node.on("close", function() {