Add experimental controls infrastructure, thanks @elemoine

src/ol/mapevent.js

@@ -0,0 +1,35 @@
+goog.provide('ol.MapEvent');
+
+goog.require('goog.events.Event');
+
+
+
+/**
+ * @constructor
+ * @extends {goog.events.Event}
+ * @param {string} type Event type.
+ * @param {ol.Map} map Map.
+ */
+ol.MapEvent = function(type, map) {
+
+  goog.base(this, type);
+
+  /**
+   * @type {ol.Map}
+   */
+  this.map = map;
+
+  /**
+   * @type {boolean}
+   */
+  this.defaultPrevented = false;
+
+};
+goog.inherits(ol.MapEvent, goog.events.Event);
+
+
+/**
+ */
+ol.MapEvent.prototype.preventDefault = function() {
+  this.defaultPrevented = true;
+};