Hi!
Enclosed a small patch to optionally also track base layer changes in the
NavigationHistory Control. Just set the trackBaseLayerChange option to true.
Default is false, ie. old behaviour.
I use this at http://bestofosm.org/ .
Jochen
--
Jochen Topf [email protected] http://www.remote.org/jochen/ +49-721-388298
--- work/openlayers/trunk/openlayers/lib/OpenLayers/Control/NavigationHistory.js 2009-07-27 21:19:44.000000000 +0200
+++ NavigationHistory.js 2009-08-15 10:34:50.000000000 +0200
@@ -67,6 +67,12 @@
limit: 50,
/**
+ * APIProperty: trackBaseLayerChange
+ * {Boolean} Track changes of base layer in history items. Default is false.
+ */
+ trackBaseLayerChange: false,
+
+ /**
* APIProperty: autoActivate
* {Boolean} Activate the control when it is added to a map. Default is
* true.
@@ -127,10 +133,14 @@
this.registry = OpenLayers.Util.extend({
"moveend": function() {
- return {
+ var state = {
center: this.map.getCenter(),
- resolution: this.map.getResolution()
+ resolution: this.map.getResolution()
};
+ if (this.trackBaseLayerChange) {
+ state.baselayer = this.map.baseLayer;
+ }
+ return state;
}
}, this.registry);
@@ -296,6 +306,9 @@
* state - {Object} An object representing the state to restore.
*/
restore: function(state) {
+ if (state.baselayer) {
+ this.map.setBaseLayer(state.baselayer);
+ }
var zoom = this.map.getZoomForResolution(state.resolution);
this.map.setCenter(state.center, zoom);
},
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