Marker.Popup.js

/*
 * Popup extension to L.Marker, adding popup-related methods.
 */

L.Marker.include({
	openPopup: function () {
		if (this._popup && this._map) {
			this._popup.setLatLng(this._latlng);
			this._map.openPopup(this._popup);
		}

		return this;
	},

	closePopup: function () {
		if (this._popup) {
			this._popup._close();
		}
		return this;
	},

	bindPopup: function (content, options) {
		var anchor = L.point(this.options.icon.options.popupAnchor) || new L.Point(0, 0);

		anchor = anchor.add(L.Popup.prototype.options.offset);

		if (options && options.offset) {
			anchor = anchor.add(options.offset);
		}

		options = L.extend({offset: anchor}, options);

		if (!this._popup) {
			this
			    .on('click', this.openPopup, this)
			    .on('remove', this.closePopup, this)
			    .on('move', this._movePopup, this);
		}

		this._popup = new L.Popup(options, this)
			.setContent(content);

		return this;
	},

	unbindPopup: function () {
		if (this._popup) {
			this._popup = null;
			this
			    .off('click', this.openPopup)
			    .off('remove', this.closePopup)
			    .off('move', this._movePopup);
		}
		return this;
	},

	_movePopup: function (e) {
		this._popup.setLatLng(e.latlng);
	}
});