[Kde-pim] Dragging akonadi items

[Ingo Klöcker]

On Sunday 21 February 2010, Robin Atwood wrote:
> On Sunday 21 February 2010, Ingo Klöcker wrote:
> > On Sunday 21 February 2010, Robin Atwood wrote:
> > > If I drag a kaddressbook item to kwrite, the akonadi: URL is
> > > resolved and I can see the VCS entry in the editor. If I drag it
> > > to my KLineEdit widget I just get the URL despite that I have
> > > the UrlDropsEnabled property set. What am I missing? (A lot, I
> > > suspect!)
> > 
> > I think you misunderstand the UrlDropsEnabled property.
> 
> That was my impression also. :)
> 
> > IMO resolving of URLs cannot be handled by a plain vanilla
> > KLineEdit because what the URL should be resolved to depends on
> > the context. An akonadi-URL representing a contact could be
> > resolved to the contact's name, the contact's email address, the
> > contact's phone number, etc., depending on the context (i.e. does
> > the line edit expect a name, an email address, a phone number,
> > etc.).
> 
> This is what I want. I guess my question is how to do the decoding
> without getting too involved with akonadi internals; KWrite seems to
> do it automatically.

KWrite simply uses the corresponding kioslave to load the data 
referenced by the URL. All applications supporting KIO can do this. For 
a line edit this approach doesn't work because putting a complete vCard 
into a line edit doesn't make much sense.

Nevertheless, you might not have to get in touch with Akonadi at all. 
KMail's line edit does the following:

void KMLineEdit::dropEvent(QDropEvent *event)
{
  const QMimeData *md = event->mimeData();

  // Case one: The user dropped a text/directory (i.e. vcard), so decode 
its
  //           contents
  if ( KPIM::KVCardDrag::canDecode( md ) ) {
    KABC::Addressee::List list;
    KPIM::KVCardDrag::fromMimeData( md, list );

    KABC::Addressee::List::Iterator ait;
    for ( ait = list.begin(); ait != list.end(); ++ait ){
      insertEmails( (*ait).emails() );
    }
  }

  [...]
}

The only problem is that KPIM::KVCardDrag lives in kdepim/libkdepim, 
i.e. it's not public API. If you want to use it outside or kdepim you 
might have to copy it.


Regards,
Ingo
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