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track old extent when changing base layers - see #463

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git-svn-id: http://svn.openlayers.org/trunk/openlayers@2167 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf
This commit is contained in:
Tim Schaub
2007-01-20 17:03:40 +00:00
parent 7518b9716c
commit a64b91de7c
1 changed files with 9 additions and 6 deletions
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15
lib/OpenLayers/Map.js
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@@ -431,16 +431,19 @@ OpenLayers.Map.prototype = {
* @param {Boolean} noEvent
*/
setBaseLayer: function(newBaseLayer, noEvent) {
var oldBaseLayer = this.baseLayer;
var oldExtent = null;
if(this.baseLayer) {
oldExtent = this.baseLayer.getExtent();
}
if (newBaseLayer != oldBaseLayer) {
if (newBaseLayer != this.baseLayer) {
// is newBaseLayer an already loaded layer?
if (OpenLayers.Util.indexOf(this.layers, newBaseLayer) != -1) {
// make the old base layer invisible
if (oldBaseLayer != null) {
oldBaseLayer.setVisibility(false, noEvent);
if (this.baseLayer != null) {
this.baseLayer.setVisibility(false, noEvent);
}
// set new baselayer and make it visible
@@ -450,10 +453,10 @@ OpenLayers.Map.prototype = {
//redraw all layers
var center = this.getCenter();
if (center != null) {
if (oldBaseLayer == null) {
if (oldExtent == null) {
this.setCenter(center);
} else {
this.zoomToExtent(oldBaseLayer.getExtent());
this.zoomToExtent(oldExtent);
}
}