[Sugar-devel] User workflow sharing "Journal Entries" over USB sticks

Martin Langhoff martin.langhoff at gmail.com
Mon Dec 28 13:25:21 EST 2009

Aleksey, List,

Hope everyone is relaxing, enjoying and not reading the list... if you
are... might be the right time to wake up from the excesses of
Christmas celebrations :-)

Looks like everyone forgot about these patches of mine. I've now
posted them as http://bugs.sugarlabs.org/ticket/1636 -- the patches
haven't changed but the "r?" might draw some attention.

My old post below is still very relevant, and my notes after it, plus
a request for help.

On Sat, Dec 5, 2009 at 9:59 PM, Martin Langhoff
<martin.langhoff at gmail.com> wrote:
>  I have 4 patches that fix this up so that we DTRT - attached in
> http://dev.laptop.org/ticket/9657
>    * 0001-Removable-disk-Save-metadata-and-preview-dlo-9657.patch
>    * 0002-Removable-disk-read-json-formatted-.metadata-and-.pr.patch
>    * 0003-Removable-disk-Handle-renames-dlo-9657.patch
>    * 0004-Removable-disk-delete-preview-and-metadata-dlo-9657.patch
> With this
>    * We save the files with their correct metadata
>    * Read the metadata back, display it, copy it correctly into the
> DS, and search descriptions/tags if the user runs a search
>    * Renames and removes are handled correctly on-disk
> (metadata/preview files are renamed or removed

The above approach stems from long discussion in this same thread. If
your email proggy doesn't do threads nicely, see

These patches fix the problem in the core code. There are two UI
glitches, and I am needing help in sorting them out, 'cause I don't
understand the OO-ish approach used in Journal UI. See below:

> The results are not perfect, as we have UI glitches -- on delete the
> file listing doesn't remove the file 'collapsedentry'; on rename, the
> new name is shown until you touch the scrollbar, there it reverts to
> the old name.
> To fix those UI glitches we need to issue a message to the
> InplaceResultSet instance somehow... except that we don't have a
> handle to it. I also attempted to do something like
> http://git.sugarlabs.org/projects/sugar/repos/mainline/commits/b0113bf67c31dbeaa08cf0f1710c1be8d02a9b25
> which sure looks right, but didn't work for me.
> Triggering these actions from the UI widget objects makes it all
> overly confusing to a newcomer like me. The ocassional dbus message
> makes it even more entertaining.
> In any case, the patches bring the backend behaviour to correctness.
> With some help we can also address the UI glitches (or punt and deal
> with them with later).

and the patches will be soon followed by other patches that allow 0.84
read from 0.82-written USB disks, so that teachers that have saved
their files on a USB stick before upgrade can use them.


 martin.langhoff at gmail.com
 martin at laptop.org -- School Server Architect
 - ask interesting questions
 - don't get distracted with shiny stuff  - working code first
 - http://wiki.laptop.org/go/User:Martinlanghoff

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