I've taken the liberty of adding this to the gadgets proposals page on en.wikipedia:
https://en.wikipedia.org/wiki/Wikipedia:Gadget/proposals#Mobile_sidebar

If no objection I'll set it up tomorrow.

Also I put the .js and .css files on github for easier patching: https://github.com/brion/MediaWiki-MobileSidebar

-- brion

On Sun, Oct 12, 2014 at 6:07 PM, Brion Vibber <bvibber@wikimedia.org> wrote:
Awesome! I've made some further updates, and there's now a toggle button on the tab bar, next to the watchlist star, so the mobile view can be turned on and off at will.

Note that since it now uses an external stylesheet, to include the copies fromĀ  my meta page now takes two imports:

// Mobile sidebar
mw.loader.load('https://meta.wikimedia.org/w/index.php?action=raw&title=User:Brion_VIBBER/mobile-sidebar.js&ctype=text/javascript', 'text/javascript');
mw.loader.load('https://meta.wikimedia.org/w/index.php?action=raw&title=User:Brion_VIBBER/mobile-sidebar.css&ctype=text/css', 'text/css');

-- brion

On Fri, Oct 10, 2014 at 10:33 PM, Prateek Saxena <psaxena@wikimedia.org> wrote:
On Fri, Oct 10, 2014 at 1:15 PM, Brion Vibber <bvibber@wikimedia.org> wrote:
> This shows the currently viewed page on the mobile view in an <iframe>
> sidebar, and captures link navigation within the iframe to navigate on the
> desktop window as well.

I really like this :)


> Todo:
> * add an on/off switch
> * pretty it up

I added just an off switch and prettied it up a little. I just refresh
the page to turn it back on for now. I have an idea for putting the
size selection UI which I'll add later.

http://cl.ly/XzUa
https://meta.wikimedia.org/wiki/User:Prtksxna/common.js
https://meta.wikimedia.org/wiki/User:Prtksxna/common.css