Use IP GeoLocation to choose a default view for the slippy map if

[rails.git] / public / javascripts / map.js

diff --git a/public/javascripts/map.js b/public/javascripts/map.js
index 71f5b8ff8be18845881b77dab4db62fc4c53e2ae..781ea5551de36d67030e872cc07ae3a1dac7f05f 100644 (file)
--- a/public/javascripts/map.js
+++ b/public/javascripts/map.js
@@ -2,7 +2,7 @@ var map;
 var markers;
 var popup;
 
-function createMap(divName, centre, zoom) {
+function createMap(divName) {
    OpenLayers.Util.onImageLoadError = function() {
       this.src = OpenLayers.Util.getImagesLocation() + "404.png";
    }
@@ -24,8 +24,10 @@ function createMap(divName, centre, zoom) {
                                              { type: 'png', getURL: getTileURL, displayOutsideMaxExtent: true });
    map.addLayer(osmarender);
 
+   markers = new OpenLayers.Layer.Markers("markers", { visibility: false });
+   map.addLayer(markers);
+
    map.addControl(new OpenLayers.Control.LayerSwitcher());
-   map.setCenter(centre, zoom);
 
    return map;
 }
@@ -50,14 +52,10 @@ function getTileURL(bounds) {
 }
 
 function addMarkerToMap(position, icon, description) {
-   if (markers == null) {
-      markers = new OpenLayers.Layer.Markers("markers");
-      map.addLayer(markers);
-   }
-
    var marker = new OpenLayers.Marker(position, icon);
 
    markers.addMarker(marker);
+   markers.setVisibility(true);
 
    if (description) {
       marker.events.register("click", marker, function() { openMapPopup(marker, description) });
@@ -96,6 +94,35 @@ function removeMarkerFromMap(marker){
    markers.removeMarker(marker);
 }
 
+function getMapLayers() {
+   var layers = "";
+
+   for (var i=0; i< this.map.layers.length; i++) {
+      var layer = this.map.layers[i];
+
+      if (layer.isBaseLayer) {
+         layers += (layer == this.map.baseLayer) ? "B" : "0";
+      } else {
+         layers += (layer.getVisibility()) ? "T" : "F";
+      }
+   }
+
+   return layers;
+}
+
+function setMapLayers(layers) {
+   for (var i=0; i < layers.length; i++) {
+      var layer = map.layers[i];
+      var c = layers.charAt(i);
+
+      if (c == "B") {
+         map.setBaseLayer(layer);
+      } else if ( (c == "T") || (c == "F") ) {
+         layer.setVisibility(c == "T");
+      }
+   }
+}
+
 function mercatorToLonLat(merc) {
    var lon = (merc.lon / 20037508.34) * 180;
    var lat = (merc.lat / 20037508.34) * 180;