NAV 2015 Control Addin - MemoPad for Web And Windows Client

I am trying to write a client add-in for NAV 2015 that will allow the user to enter a large chunk of text into a box - like a memo pad. However it is essential it works on the web client as well as the windows client.

I created a simple javascript addin however I have discovered that I cannot do things like copy, paste. This must be something to do with restrictions on the web browser control that is used - can anyone enlighten me on this?

I found this solution:
http://www.hougaard.com/wysiwyg-editing ... -and-2015/

But it is too complex for us - I need my text stored as basic text and not HTML so I can easily parse it and store it in NAV records.
Also this solution has a copy and paste buttons (which I suppose I could do something similar if I can figure out how they work) but again you cannot use shortcut keys such as ctrl+v

Has anyone seen any other memo pad solutions out there that work on the web client?

Thanks


EDIT: I have discovered that my simple addin with a javascript <textarea> does allow you to paste it into when using the web client but not the windows client. This is a bit strange.

But regardless I can design a different page for the web/windows client - the web client can use the addin for inserting blocks of text, the windows client can use a text variable control which can be set to fill a whole page in NAV 2015