title: How to detect if side menu is open/closed in ionic 2?
body: <p>I am using <code>cordova-google-maps</code> plugin with my ionic 2 app, and I want to show the menu (sidenav) on that page. Problem is for the sidenav to receive events properly I need to call <code>map.setClickable( false )</code> while opening the sidenav and set it back to <code>true</code> when the user closes the sidenav. It seems there is an event for checking while the menu is being opened with <code>opening</code>, but I don't know how to track when the user closes the menu.</p>