[Mozile] Paste Bin

[James A. Overton]

	Here are the results of a few experiments with iframes in Firefox 1.5.
	You can create an iframe with designMode on. The user can paste text  
or HTML into the iframe, and the parent document can grab it using  
something like iframe.contentDocument.body.innerHTML. So Reto's idea  
for a "paste bin" will work nicely using an iframe.
	However, unprivileged scripts aren't allowed to call execCommand 
("paste"). YOu'll just get an NS_ERROR_DOM_XPCONNECT_ACCESS_DENIED  
error. So you can't have a script in the parent document paste into  
the iframe and extract the contents automatically. That would  
completely circumvent the security measures placed on the clipboard,  
and that potential security hole is closed. See this page for  
details: http://www.mozilla.org/editor/midasdemo/securityprefs.html
	The best solution for Mozilla will be an extension which allows  
limited access to the clipboard. This was working in Mozile 0.7, and  
eventually we'll implement it for Mozile 0.8. (The extension would  
also control the editing caret automatically.) The advantage of the  
paste bin solution, of course, is that it doesn't require the user to  
install an extension.

James