_NEW_WM_CURRENT_URI

[Michal Hruby <michal mhr gmail com>]

Hi,

lately we've seen more interest in semantic desktop, and one thing we're 
missing is a standardized way to determine what document(-s) is an 
application working with (see [1] for more background info).

Nepomuk guys are already starting to use special DBus service to which 
supported apps talk, and we in Zeitgeist are also using plugins for 
various apps to tell us which resource they use.
Therefore I suggest adding new X property where windows would indicate 
which resource is currently opened inside them and update this property 
when another document is opened or tab with different document is 
activated.

There were also suggestions to make this property a list of uris, but 
I'm still not convinced this is a good idea - we shouldn't automatically 
assume that all uris opened in an app are related to each other (see 
people using lots of tabs in browsers, never-ending list of uris for 
media-players, ...).

This will also allow implementing document-based pagers to push the 
limits of current application-based ones.

Regards,
Michal Hruby

[1] http://mhr3.blogspot.com/2010/05/lets-make-users-lives-easier.html