DivOverlay: common function toggle

Refactor Layer\ togglePopup/Tooltip: use common function DivOverlay\toggle

src/layer/DivOverlay.js

@@ -178,6 +178,17 @@ export var DivOverlay = Layer.extend({
 		return this;
 	},
 
+	// @method toggle(parent?: Layer): this
+	// Opens or closes the overlay bound to layer depending on its current state.
+	toggle: function (parent, target) {
+		if (this._map) {
+			this.close();
+		} else {
+			this._open(arguments.length ? parent : this._source, target);
+		}
+		return this;
+	},
+
 	_open: function (parent, layer, latlng) {
 		if (!parent._map) { return; }
 

src/layer/Popup.js

@@ -413,11 +413,7 @@ Layer.include({
 	// Opens or closes the popup bound to this layer depending on its current state.
 	togglePopup: function (target) {
 		if (this._popup) {
-			if (this._popup._map) {
-				this._popup.close();
-			} else {
-				this.openPopup(target);
-			}
+			this._popup.toggle(this, target);
 		}
 		return this;
 	},

src/layer/Tooltip.js

@@ -331,11 +331,7 @@ Layer.include({
 	// Opens or closes the tooltip bound to this layer depending on its current state.
 	toggleTooltip: function (target) {
 		if (this._tooltip) {
-			if (this._tooltip._map) {
-				this._tooltip.close();
-			} else {
-				this.openTooltip(target);
-			}
+			this._tooltip.toggle(this, target);
 		}
 		return this;
 	},