1 files changed, 58 insertions, 0 deletions
diff --git a/extlib/leaflet/src/core/Events.js b/extlib/leaflet/src/core/Events.js
new file mode 100644
index 00000000..53ea20fa
--- /dev/null
+++ b/extlib/leaflet/src/core/Events.js
@@ -0,0 +1,58 @@
+/*
+ * L.Mixin.Events adds custom events functionality to Leaflet classes 
+ */
+
+L.Mixin = {};
+
+L.Mixin.Events = {
+	addEventListener: function(/*String*/ type, /*Function*/ fn, /*(optional) Object*/ context) {
+		var events = this._leaflet_events = this._leaflet_events || {};
+		events[type] = events[type] || [];
+		events[type].push({
+			action: fn,
+			context: context
+		});
+		return this;
+	},
+	
+	hasEventListeners: function(/*String*/ type) /*-> Boolean*/ {
+		var k = '_leaflet_events';
+		return (k in this) && (type in this[k]) && (this[k][type].length > 0);
+	},
+	
+	removeEventListener: function(/*String*/ type, /*Function*/ fn, /*(optional) Object*/ context) {
+		if (!this.hasEventListeners(type)) { return this; }
+		
+		for (var i = 0, events = this._leaflet_events, len = events[type].length; i < len; i++) {
+			if (
+				(events[type][i].action === fn) && 
+				(!context || (events[type][i].context === context))
+			) {
+				events[type].splice(i, 1);
+				return this;
+			}
+		}
+		return this;
+	},
+	
+	fireEvent: function(/*String*/ type, /*(optional) Object*/ data) {
+		if (!this.hasEventListeners(type)) { return; }
+		
+		var event = L.Util.extend({
+			type: type,
+			target: this
+		}, data);
+		
+		var listeners = this._leaflet_events[type].slice();
+		
+		for (var i = 0, len = listeners.length; i < len; i++) {
+			listeners[i].action.call(listeners[i].context || this, event);
+		}
+		
+		return this;
+	}
+};
+
+L.Mixin.Events.on = L.Mixin.Events.addEventListener;
+L.Mixin.Events.off = L.Mixin.Events.removeEventListener;
+L.Mixin.Events.fire = L.Mixin.Events.fireEvent;
+\ No newline at end of file