1 files changed, 40 insertions, 0 deletions
diff --git a/extlib/leaflet/src/layer/FeatureGroup.js b/extlib/leaflet/src/layer/FeatureGroup.js
new file mode 100644
index 00000000..6e45d84c
--- /dev/null
+++ b/extlib/leaflet/src/layer/FeatureGroup.js
@@ -0,0 +1,40 @@
+/*
+ * L.FeatureGroup extends L.LayerGroup by introducing mouse events and bindPopup method shared between a group of layers. 
+ */
+
+L.FeatureGroup = L.LayerGroup.extend({
+	includes: L.Mixin.Events,
+
+	addLayer: function(layer) {
+		this._initEvents(layer);
+		L.LayerGroup.prototype.addLayer.call(this, layer);
+		
+		if (this._popupContent && layer.bindPopup) {
+			layer.bindPopup(this._popupContent);
+		} 
+	},
+	
+	bindPopup: function(content) {
+		this._popupContent = content;
+		
+		for (var i in this._layers) {
+			if (this._layers.hasOwnProperty(i) && this._layers[i].bindPopup) {
+				this._layers[i].bindPopup(content);
+			}
+		}
+	},
+	
+	_events: ['click', 'dblclick', 'mouseover', 'mouseout'],
+	
+	_initEvents: function(layer) {
+		for (var i = 0, len = this._events.length; i < len; i++) {
+			layer.on(this._events[i], this._propagateEvent, this);
+		}
+	},
+	
+	_propagateEvent: function(e) {
+		e.layer = e.target;
+		e.target = this;
+		this.fire(e.type, e);
+	}
+});
+\ No newline at end of file