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List:       kmail-devel
Subject:    KMail drag and drop
From:       Sébastien_Laoût "\[temporar\]" <les83plus () free ! fr>
Date:       2004-08-25 17:23:53
Message-ID: 1093454633.3386.1.camel () localhost ! localdomain
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Hello,

I'm the BasKet programmer:
http://les83plus.free.fr/sebastien.laout/basket/
The program is all about drag and dropping: it allow to collect various
things and keep them related and on hand.

In that spirit, some users ask me to be able to drop mails from KMail
into a basket.
A user even given me a good example: it was applying for a job and he
put all the associated items (mail, CV, the job subscription, the
letter, phone number, etc...) togever.

I looked at the transfert, and KMail provides only the
"x-kmail-drag/message-list" MIME type.
And by looking better it seem with very few interesting data. I think it
is only used internaly for moving/copying mails.

I tryed with Evolution and it give more interesting data:
- x-evolution-message (contain
"file:///home/seb/evolution/local/Inbox\010568")
- message/rfc822 (contain the integral message)
- text/uri-list (contain
"file:///tmp/evolution-501-3377/drag-n-drop-QEIsZ3/Re: basket")
When dragging more than one mail at a time, the uri-list contain a link
to a mbox file
("file:///tmp/evolution-501-3377/drag-n-drop-3muxAc/mbox"), but the
rfc822 contain nothing (bad), the x-evolution-message add a '\0' and a
mail number for each mail at the end.

So, I would want to know if you can do the same sort of job when
dragging a mail?

Because the mail can be very long and would full the basket, a user
asked me if I can create a link to the mail(s) instead of copying it
entirly.
I think to present an option to the user which 1/ Link the mail 2/ Copy
the mail.
When a "mail link" in the basket would be clicked, it should open KMail
and saying to show the related mail.
Eventually open it even if the mail was moved to another KMail folder.

I don't know if it is possible.
I looked at the KMail source code but never found any reference to
"x-kmail-drag/message-list"! So I can't know if it contain enought data
to make the link working.
I don't find any DCOP function or kmail parameter to open a defined mail
(link feature), so that isn't possible for the moment, I suppose.

To summarize, what I would ask to you:
- Provide more MIME types when drag'n'drop message(s): at least
"message/rfc822"
- It should also work for multiple mail dragging: provide a mbox MIME
type
- Is it possible with the current "x-kmail-drag/message-list" to
identify uniquely (and even after a (re)moving) messages, to call them
later? If not, try to make that possible.
- This can be done by associating an unique identifier number to mails,
and do not reuse them after deletion (until there is suficient ID
numbers)
- Don't know if the Evolution temporar "text/uri-list" is useful. Just a
great addition.
- Offer command line paramter to directly position KMail viewing a given
unique mail (and go_to/open the containing folder before, if necessary)
AND/OR another option to open a viewer window to this mail (without the
main window).

P.S.: I'm not registered to the list,
      Please CC me when replying.
      Thanks.

Best regards,

Sébastien Laoût.


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