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Fire zoomlevelschange event when zoomlevels are updated.

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This is triggered when you remove a layer from a map with greater
zoom level coverage than the remainding layers or when you add a tilelayer
with greater zoomlevel coverage than the previous set of layers had.
This commit is contained in:
Mattias Bengtsson
2013-02-14 03:04:10 +01:00
parent b8b8d7b351
commit efe0c6f6ea
1 changed files with 10 additions and 1 deletions
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11
src/map/Map.js
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@ -271,6 +271,10 @@ L.Map = L.Class.extend({
return Math.min(z1, z2); return Math.min(z1, z2);
}, },
getZoomLevels: function () {
return this.getMaxZoom() - this.getMinZoom() + 1;
},
getBoundsZoom: function (bounds, inside) { // (LatLngBounds, Boolean) -> Number getBoundsZoom: function (bounds, inside) { // (LatLngBounds, Boolean) -> Number
bounds = L.latLngBounds(bounds); bounds = L.latLngBounds(bounds);
@ -533,7 +537,8 @@ L.Map = L.Class.extend({
_updateZoomLevels: function () { _updateZoomLevels: function () {
var i, var i,
minZoom = Infinity, minZoom = Infinity,
maxZoom = -Infinity; maxZoom = -Infinity,
oldZoomLevels = this.getZoomLevels();
for (i in this._zoomBoundLayers) { for (i in this._zoomBoundLayers) {
if (this._zoomBoundLayers.hasOwnProperty(i)) { if (this._zoomBoundLayers.hasOwnProperty(i)) {
@ -553,6 +558,10 @@ L.Map = L.Class.extend({
this._layersMaxZoom = maxZoom; this._layersMaxZoom = maxZoom;
this._layersMinZoom = minZoom; this._layersMinZoom = minZoom;
} }
if (oldZoomLevels !== this.getZoomLevels()) {
this.fire("zoomlevelschange");
}
}, },
// map events // map events