give layer an "added" and "removed" event. p=mpriour,me r=me (closes #2983)

git-svn-id: http://svn.openlayers.org/trunk/openlayers@11052 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf

lib/OpenLayers/Layer/Bing.js

@@ -50,28 +50,6 @@ OpenLayers.Layer.Bing = OpenLayers.Class(OpenLayers.Layer.XYZ, {
      */
     metadataParams: null,
 
-    /**
-     * Constant: EVENT_TYPES
-     * {Array(String)} Supported application event types.  Register a listener
-     *     for a particular event with the following syntax:
-     * (code)
-     * layer.events.register(type, obj, listener);
-     * (end)
-     *
-     * Listeners will be called with a reference to an event object.  The
-     *     properties of this event depends on exactly what happened.
-     *
-     * All event objects have at least the following properties:
-     * object - {Object} A reference to layer.events.object.
-     * element - {DOMElement} A reference to layer.events.element.
-     *
-     * Supported map event types (in addition to those from <OpenLayers.Layer>):
-     * added - Triggered after the layer is added to a map.  Listeners
-     *      will receive an object with a *map* property referencing the
-     *      map and a *layer* property referencing the layer.
-     */
-    EVENT_TYPES: ["added"],
-
     /**
      * Constructor: OpenLayers.Layer.Bing
      * Create a new Bing layer.
@@ -98,12 +76,6 @@ OpenLayers.Layer.Bing = OpenLayers.Class(OpenLayers.Layer.XYZ, {
      * Any other documented layer properties can be provided in the config object.
      */
     initialize: function(options) {
-        // concatenate events specific to vector with those from the base
-        this.EVENT_TYPES =
-            OpenLayers.Layer.Bing.prototype.EVENT_TYPES.concat(
-            OpenLayers.Layer.prototype.EVENT_TYPES
-        );
-        
         options = OpenLayers.Util.applyDefaults({
             zoomOffset: 1,
             maxResolution: 78271.51695,
@@ -245,9 +217,6 @@ OpenLayers.Layer.Bing = OpenLayers.Class(OpenLayers.Layer.XYZ, {
             this.updateAttribution();
         }
         this.map.events.register("moveend", this, this.updateAttribution);
-        // TODO: move this event to Layer
-        // http://trac.osgeo.org/openlayers/ticket/2983
-        this.events.triggerEvent("added", {map: this.map, layer: this});
     },
     
     /**