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Track changes to layers in the map

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This commit is contained in:
Tom Payne
2013-04-16 18:31:59 +02:00
parent 07fe17924b
commit bc10446b0e
2 changed files with 51 additions and 59 deletions
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51
src/ol/map.js
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@@ -29,6 +29,8 @@ goog.require('goog.style');
goog.require('goog.vec.Mat4');
goog.require('ol.BrowserFeature');
goog.require('ol.Collection');
goog.require('ol.CollectionEvent');
goog.require('ol.CollectionEventType');
goog.require('ol.Color');
goog.require('ol.Extent');
goog.require('ol.FrameState');
@@ -295,6 +297,14 @@ ol.Map = function(options) {
goog.bind(this.getTilePriority, this),
goog.bind(this.handleTileChange_, this));
/**
* @private
* @type {Array.<?number>}
*/
this.layersListenerKeys_ = null;
goog.events.listen(this, ol.Object.getChangedEventType(ol.MapProperty.LAYERS),
this.handleLayersChanged_, false, this);
goog.events.listen(this, ol.Object.getChangedEventType(ol.MapProperty.VIEW),
this.handleViewChanged_, false, this);
goog.events.listen(this, ol.Object.getChangedEventType(ol.MapProperty.SIZE),
@@ -302,6 +312,7 @@ ol.Map = function(options) {
goog.events.listen(
this, ol.Object.getChangedEventType(ol.MapProperty.BACKGROUND_COLOR),
this.handleBackgroundColorChanged_, false, this);
this.setValues(optionsInternal.values);
// this gives the map an initial size
@@ -549,6 +560,46 @@ ol.Map.prototype.handleBrowserEvent = function(browserEvent, opt_type) {
};
/**
* @param {ol.CollectionEvent} collectionEvent Collection event.
* @private
*/
ol.Map.prototype.handleLayersAdd_ = function(collectionEvent) {
this.render();
};
/**
* @param {goog.events.Event} event Event.
* @private
*/
ol.Map.prototype.handleLayersChanged_ = function(event) {
if (!goog.isNull(this.layersListenerKeys_)) {
goog.array.forEach(this.layersListenerKeys_, goog.events.unlistenByKey);
this.layersListenerKeys_ = null;
}
var layers = this.getLayers();
if (goog.isDefAndNotNull(layers)) {
this.layersListenerKeys_ = [
goog.events.listen(layers, ol.CollectionEventType.ADD,
this.handleLayersAdd_, false, this),
goog.events.listen(layers, ol.CollectionEventType.REMOVE,
this.handleLayersRemove_, false, this)
];
}
this.render();
};
/**
* @param {ol.CollectionEvent} collectionEvent Collection event.
* @private
*/
ol.Map.prototype.handleLayersRemove_ = function(collectionEvent) {
this.render();
};
/**
* @param {ol.MapBrowserEvent} mapBrowserEvent The event to handle.
*/