allow setting initial position with get params

[syj.git] / public / js / syj.js

diff --git a/public/js/syj.js b/public/js/syj.js
index 9d7f974793222537f14a502d7b9cd75cd75013e8..de3333f5c41d0028b60313604ea9ff0582bfaebc 100644 (file)
--- a/public/js/syj.js
+++ b/public/js/syj.js
@@ -267,7 +267,7 @@ var SYJView = {
     mode: 'view',
 
     init: function() {
-        var externalGraphic, baseURL, baseLayer, layerOptions, extent, hidemessenger;
+        var externalGraphic, baseURL, baseLayer, layerOptions, hidemessenger;
 
         // is svg context, opera does not resolve links with base element is svg context
         externalGraphic = styleMap.edit.styles.select.defaultStyle.externalGraphic;
@@ -341,15 +341,14 @@ var SYJView = {
 
         if (typeof gInitialGeom !== "undefined" && typeof gInitialGeom.data !== "undefined") {
             this.viewLayer.addFeatures([this.wkt.read(gInitialGeom.data)]);
-            extent = this.viewLayer.getDataExtent();
             // XXX: ie has not guessed height of map main div yet during map
             // initialisation. Now, it will read it correctly.
             this.map.updateSize();
+            this.map.zoomToExtent(this.viewLayer.getDataExtent());
         } else {
-            extent = new OpenLayers.Bounds(gMaxExtent.minlon, gMaxExtent.minlat, gMaxExtent.maxlon, gMaxExtent.maxlat)
-                                         .transform(WGS84, Mercator);
+            this.initMaPos(gInitialPos);
         }
-        this.map.zoomToExtent(extent);
+
         document.observe('simplebox:shown', this.observer.bindAsEventListener(this));
         SYJPathLength.update();
 
@@ -378,10 +377,10 @@ var SYJView = {
                     var results = null;
                     var content = evt.target.result;
 
-                    var engine;
+                    var engine, i;
                     var formats = ['KML', 'GPX'];
 
-                    for (var i = 0; i < formats.length; i++) {
+                    for (i = 0; i < formats.length; i++) {
                         engine = new OpenLayers.Format[formats[i]]({ internalProjection: Mercator, externalProjection: WGS84 });
                         try {
                             results = engine.read(content);
@@ -427,6 +426,27 @@ var SYJView = {
         }
     },
 
+    initMaPos: function (aPos) {
+        var extent = null, center = null, zoom = 0;
+
+        if (aPos.hasOwnProperty('lon') && aPos.hasOwnProperty('lat') && aPos.hasOwnProperty('zoom')) {
+            center = new OpenLayers.LonLat(parseFloat(aPos.lon), parseFloat(aPos.lat)).transform(WGS84, Mercator);
+            zoom = parseInt(aPos.zoom);
+        } else if (aPos.hasOwnProperty('minlon') && aPos.hasOwnProperty('minlat')
+                    && aPos.hasOwnProperty('maxlon') && aPos.hasOwnProperty('maxlat')) {
+            extent = new OpenLayers.Bounds(aPos.minlon, aPos.minlat, aPos.maxlon, aPos.maxlat)
+                                         .transform(WGS84, Mercator);
+        } else {
+            extent = new OpenLayers.Bounds(-160, -70, 160, 70).transform(WGS84, Mercator);
+        }
+
+        if (extent) {
+            this.map.zoomToExtent(extent);
+        } else {
+            this.map.setCenter(center, zoom);
+        }
+    },
+
     observer: function(evt) {
         if (evt.eventName === "simplebox:shown" && evt.memo.element !== $("termsofusearea")) {
             this.messenger.hide();
@@ -1139,7 +1159,8 @@ var Nominatim = (function() {
             };
         };
 
-        for (var i = 0; i < transport.responseJSON.length; i++) {
+        var i;
+        for (i = 0; i < transport.responseJSON.length; i++) {
             var item = transport.responseJSON[i];
             if (item.display_name && item.boundingbox && item.boundingbox.length === 4) {
                 var li = new Element("li");