[sugar] Question about clipboard service

Tomeu Vizoso tomeu at tomeuvizoso.net
Sat Jul 19 11:14:23 EDT 2008

Well, we can add some sugar API around the gtk clipboard stuff, but
I'm not sure there's a lot of value in there, as the gtk+ API is
already quite high level.

The problem here is how do we extend the existing X specs to deliver
the experience we aim for. Last we talked about it, Marco was opposed
to use the X selection targets to pass titles and icons around.

Eben, now is a good moment to start talking about it, can you
summarize what is missing from the clipboard and try to list all that
we want to do but the current spec doesn't allow to?



On Sat, Jul 19, 2008 at 5:01 PM, Eben Eliason <eben.eliason at gmail.com> wrote:
> I can't tell from your wording if you are implying that we will or will not
> be creating some custom wrappers for the clipboard service.  I think we
> absolutely need them to accomplish several critical clipboard issues (among
> them, specifying icons, colors, titles, and previews for clippings).  In
> fact, getting this API working effectively is high on my list of priorities
> for 9.1
> - Eben
> On Sat, Jul 19, 2008 at 4:19 AM, Tomeu Vizoso <tomeu at tomeuvizoso.net> wrote:
>> On Fri, Jul 18, 2008 at 10:29 PM, Faisal Anwar <fanwar at mediamods.com>
>> wrote:
>> > Hi,
>> >
>> > I'm playing around with the clipboard package on sugar and had a quick
>> > question. So, the clipboardservice.py file shows some basic api for
>> > getting
>> > and setting objects on the clipboard through the dbus. However, the
>> > add_object and get_object methods (and their variants) rely on knowing
>> > an
>> > object_id in order to retrieve something from the clipboard. Typically,
>> > a
>> > clipboard has some stack like structure where you can automatically
>> > retrieve
>> > the last thing copied to the clipboard without necessarily knowing its
>> > internal id. This would seem especially important fo passing things to
>> > other
>> > activities, which can't reasonably figure out the object_id created when
>> > something is saved to the clipboard by another activity. Does anyone
>> > know
>> > how to just retrieve the last item saved to the clipboard and also get a
>> > list of the last N items saved to the clipboard?
>> >
>> > Also, the gtk.Clipboard framework allows access to several different
>> > clipboards that have slightly different purposes. Is there similar
>> > functionality available through sugar/dbus or would one go directly to
>> > the
>> > gtk implementation?
>> Hi Faisal,
>> we haven't reached any agreement yet about exposing a different
>> clipboard API than the one in gtk+ (that wraps around the different
>> clipboard-related specs used in X).
>> In other words, nobody other than the shell should directly use the
>> clipboard service and this will probably disappear in the future.
>> Activity authors should the use the clipboard functionality as exposed
>> by their toolkits (gtk+) or implement themselves those specs (as etoys
>> has done). Can you add this note somewhere in the almanac?
>> Thanks,
>> Tomeu
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