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Re: DBus Menu in Gtk theme

From: Gregory Casamento
Subject: Re: DBus Menu in Gtk theme
Date: Wed, 1 Jan 2014 16:44:25 -0500


What a great happy new year surprise.   David and I were just talking about 
this. :)

Thanks for working on this.  Very nice work!


On Jan 1, 2014, at 3:09 PM, Niels Grewe <address@hidden> wrote:

> Happy new year everybody!
> I’ll just do my own bit of ‘thread necromancy’, as Ivan adequately put it. I 
> finally found the time to hack a bit more on this D-Bus menu thing. I 
> originally started working on this back in the summer at the Cambridge 
> hackathon. It took me a while to find enough time to get all the bits and 
> pieces in order, but I finally have a partially working implementation of 
> Canonical’s global menu protocol. Please see [0] for a screenshot of Ink 
> running with a theme that delegates displaying the menu to the Ubuntu menu 
> server. Unfortunately, it’s not very useful at the moment, because I haven’t 
> implemented sending signals/notifications from DBusKit out to other D-Bus 
> objects. This is required to keep the menu server updated about the current 
> status of the menu, so by the time you start interacting with the menu, the 
> structure is out of date and ends up getting a bit messed up, so many of the 
> menu items won’t work properly. Still, it’s a pretty good start (and resulted 
> in quite a few improvements and bugfixes to DBusKit!) and I intend to add the 
> few missing parts soon, so that it becomes actually usable. 
> If you want to check it out in the meantime, please update to the latest 
> trunk version of -gui -back and dbuskit. The bundle that proxies the menu to 
> D-Bus is located in ./Bundles/DBusMenu, and there is an example theme in 
> ./Examples/GlobalMenu that shows you how to integrate the global menu into a 
> theme.
> Cheers,
> Niels
> [0] http://www.halbordnung.de/~thebeing/gnustep/global-menu-ink.png
> Am 24.06.2013 um 15:15 schrieb Ivan Vučica <address@hidden>:
>> I've played a bit more with DBus Menu, and I've accidentally stumbled upon 
>> what's been causing my 'minimal' example of creating a 'global menu' not to 
>> work.
>> The issue? Standalone items apparently cannot exist in the dbusmenu's root. 
>> They must be actual menus, with subitems, it seems.
>> So, I'm happy that the little devil finally works. It's terribly ugly, but 
>> it works.
>>    https://bitbucket.org/ivucica/mini-dbusmenu
>> This doesn't, of course, help with GNUstep, considering the consensus is 
>> that DBusKit should be used instead of hacks with glib and its main loop. 
>> But the following code from Enlightenment might:
>> http://git.enlightenment.org/core/elementary.git/plain/src/lib/elm_dbus_menu.c?id=f13463da05b76d962c5b73f4706d137a3f76ef22
>> Considering it seems to use their own DBus implementation, and does not seem 
>> to reuse any Canonical's components, or Gtk or Qt, it might be helpful in 
>> figuring out the protocol. On the other hand, someone who understands DBus 
>> better than I do (at the moment) might not need that, either; to me 
>> personally, Canonical's documentation about the protocol when talking over 
>> DBus was not extremely helpful. 
>> 'Java Swing Ayatana' project contained more useful code when it comes to 
>> integrating glib version of libdbusmenu.
>> And Enlightenment seems to contain code useful when talking directly over 
>> DBus, without Canonical's wrapper.
>> On Wednesday, November 14, 2012, Niels Grewe wrote:
>> Hi Ivan,
>> On 14.11.2012 19:17, Ivan Vučica wrote:
>>> On Tue, May 22, 2012 at 3:57 PM, Niels Grewe <address@hidden
>>> <mailto:address@hidden>> wrote:
>>>    The problem is that DBusKit does not support exposing objects right now,
>>>    but since there is interest in this from somebody who is not me, I'm now
>>>    officially motivated/coerced to finally finish that part of DBusKit.
>>>    Most of the difficult parts are done, but I'm still lacking code that
>>>    takes care of registering exported objects with the D-Bus daemon.
>>> Just checking: was some work done here?
>> Yes, quite a bit, though mostly under-the-hood stuff. Registration of
>> objects is working and they can be messaged from other D-Bus peers. The
>> problem is that at the moment, you kinda would have to hand-craft the
>> information required by DBusKit to map Obj-C methods to D-Bus methods. I
>> have bits of code here and there that automates this, but I didn't get
>> to around to bringing it into a usable state.
>> Also WIP are D-Bus property support and outgoing notifications/signals.
>> IIrc, you need the latter for DBus menus. I hope that I'd be able to
>> work more on that soon.
>> Cheers,
>> Niels
>> -- 
>> Ivan Vučica - address@hidden
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