[Vala] How to get drag'n drop picture from Firefox ?

[raum no-log org]

Hello all,

I've tried to send yesterday a mail but I didnt received a notification,
so please excuse me if you have this message on double... ^_^

I'm trying to get an picture and its URL from Firefox by 'drag & drop'
into my vala application....

I only have the URL link "pointed by"  the picture and I think I've missed
something with targets list ... (I've got some hints from
http://faq.pygtk.org/index.py?req=edit&file=faq23.018.htp)

text/x-moz-url
_NETSCAPE_URL
text/x-moz-url-data
text/x-moz-url-desc
application/x-moz-custom-clipdata
text/_moz_htmlcontext
text/_moz_htmlinfo
text/html
text/unicode
text/plain;charset=utf-8
text/plain
application/x-moz-nativeimage
application/x-moz-file-promise
application/x-moz-file-promise-url
application/x-moz-file-promise-dest-filename

I've took an example from Akshay Shekher
(https://gist.github.com/voldyman/11396492)  and add some lines :

(...)
        Gtk.TargetEntry plain_entry = { "text/plain",        0, 2 };

        target_list += string_entry;
        target_list += urilist_entry;
        target_list += plain_entry;
(...)

   void on_drag_data_received (Gtk.Widget widget, Gdk.DragContext ctx,
                            int x, int y,
                            Gtk.SelectionData selection_data,
                            uint target_type, uint time) {


(...)

        case 2:

            string data = (string) selection_data.get_data ();
            print ("%s\n", data);
            this.add (new Gtk.Label (data));
            break;
        }

(...)


Do you have some hints to retrieve picture and URL pointed by this picture ?

(example on youtube, if I search "usain bolt", I've got a picture
https://i.ytimg.com/vi/V9sxs9ekWC0/hqdefault.jpg?custom=true&w=196&h=110&stc=true&jpg444=true&jpgq=90&sp=68&sigh=8NoJzcuPtRovVOesoOjRT4iuZGU
and the link to the video https://www.youtube.com/watch?v=V9sxs9ekWC0)

Thanks

Regards

Raum