Added receiver position API to the Utils.js.

htdocs/lib/MapManager.js

@@ -58,18 +58,18 @@ function MapManager() {
 //
 MapManager.prototype.process = function(e) {
     if (typeof e.data != 'string') {
-        console.error("unsupported binary data on websocket; ignoring");
+        console.error('unsupported binary data on websocket; ignoring');
         return
     }
 
-    if (e.data.substr(0, 16) == "CLIENT DE SERVER") {
+    if (e.data.substr(0, 16) == 'CLIENT DE SERVER') {
         return
     }
 
     try {
         var json = JSON.parse(e.data);
         switch (json.type) {
-            case "update":
+            case 'update':
                 this.processUpdates(json.value);
                 break;
 
@@ -79,9 +79,11 @@ MapManager.prototype.process = function(e) {
                 });
                 break;
 
-            case "config":
+            case 'config':
                 Object.assign(this.config, json.value);
                 if ('receiver_gps' in this.config) {
+                    // Save receiver location
+                    Utils.setReceiverPos(this.config.receiver_gps);
                     // Passing API key even if this particular map
                     // engine does not need it (Google Maps do)
                     this.initializeMap(

htdocs/lib/MessagePanel.js

@@ -430,7 +430,6 @@ $.fn.hfdlMessagePanel = function() {
 AdsbMessagePanel = function(el) {
     MessagePanel.call(this, el);
     this.clearButton.css('display', 'none');
-    this.receiver_pos = null;
 }
 
 AdsbMessagePanel.prototype = Object.create(MessagePanel.prototype);
@@ -439,10 +438,6 @@ AdsbMessagePanel.prototype.supportsMessage = function(message) {
     return message['mode'] === 'ADSB-LIST';
 };
 
-AdsbMessagePanel.prototype.setReceiverPos = function(pos) {
-    if (pos.lat && pos.lon) this.receiver_pos = pos;
-};
-
 AdsbMessagePanel.prototype.render = function() {
     $(this.el).append($(
         '<table>' +
@@ -504,13 +499,14 @@ AdsbMessagePanel.prototype.pushMessage = function(msg) {
 
         // Compute distance to the receiver
         var distance = '';
-        if (this.receiver_pos && entry.lat && entry.lon) {
+        var receiver_pos = Utils.getReceiverPos();
+        if (receiver_pos && entry.lat && entry.lon) {
             var id = entry.icao?     entry.icao
                    : entry.aircraft? entry.aircraft
                    : entry.flight?   entry.flight
                    : null;
 
-            distance = Utils.distanceKm(entry, this.receiver_pos) + '&nbsp;km';
+            distance = Utils.distanceKm(entry, receiver_pos) + '&nbsp;km';
             if (id) distance = Utils.linkToMap(id, distance);
         }
 

htdocs/lib/Utils.js

@@ -8,6 +8,17 @@ Utils.callsign_url = null;
 Utils.vessel_url = null;
 Utils.flight_url = null;
 Utils.icao_url = null;
+Utils.receiver_pos = null;
+
+// Set receiver position
+Utils.setReceiverPos = function(pos) {
+    if (pos.lat && pos.lon) this.receiver_pos = pos;
+};
+
+// Get receiver position
+Utils.getReceiverPos = function() {
+    return this.receiver_pos;
+};
 
 // Set URL for linkifying callsigns
 Utils.setCallsignUrl = function(url) {
@@ -145,8 +156,11 @@ Utils.HHMMSS = function(t) {
     return pad(t.getUTCHours()) + ':' + pad(t.getUTCMinutes()) + ':' + pad(t.getUTCSeconds());
 };
 
-// Compute distance, in kilometers, between two latlons.
+// Compute distance, in kilometers, between two latlons. Use receiver
+// location if the second latlon is not provided.
 Utils.distanceKm = function(p1, p2) {
+    // Use receiver location if second latlon not given
+    if (p2 == null) p2 = this.receiver_pos;
     // Convert from map objects to latlons
     if ("lng" in p1) p1 = { lat : p1.lat(), lon : p1.lng() };
     if ("lng" in p2) p2 = { lat : p2.lat(), lon : p2.lng() };

htdocs/openwebrx.js

@@ -1069,19 +1069,14 @@ function on_ws_recv(evt) {
                         }
 
                         if ('receiver_gps' in config) {
-                            var adsb_panel = $('#openwebrx-panel-adsb-message').adsbMessagePanel();
-                            adsb_panel.setReceiverPos(config['receiver_gps']);
+                            Utils.setReceiverPos(config['receiver_gps']);
                         }
 
                         if ('flight_url' in config) {
-                            var hfdl_panel = $('#openwebrx-panel-hfdl-message').hfdlMessagePanel();
-                            var adsb_panel = $('#openwebrx-panel-adsb-message').adsbMessagePanel();
                             Utils.setFlightUrl(config['flight_url']);
                         }
 
                         if ('modes_url' in config) {
-                            var hfdl_panel = $('#openwebrx-panel-hfdl-message').hfdlMessagePanel();
-                            var adsb_panel = $('#openwebrx-panel-adsb-message').adsbMessagePanel();
                             Utils.setIcaoUrl(config['modes_url']);
                         }