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Re: [udig-devel] drag from Map and drop ....
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Ok the two points.
First is dragging the current selection. Each tool can define a
selection provider.
Since the current selection is what is dragged according to the udig
DND framework so in effect the tool determines what can be dragged.
Currently all that needs to be done to drag from the map is to create
a dropaction extension point. (I think that's what the point is called.
The second point is what happens when you drag something out of udig
to say an email. This is where things get funny and surprisingly
platform dependent.
When dragging within udig the selection is what is dragged (or from
the DND POV the objects within the selection). When dragging out of
udig the object dragged is not the object(normally). There are a set
of "transfer" objects that the must be used to take data out of udig.
Text HTML files etc... Are type main types. Made an implementation
back in the day that didn't really do it for me.
That is a quick rundown of what is going on. Actually there is a bit
more there is a selection framework in the system that is not yet in
use but really should be.
Let me know what specific questions you have. And maybe we can have a
IRC chat later. Let me know if that is what you want.
Jesse
On 27-Nov-08, at 17:58, Mauricio Pazos <mauricio.pazos@xxxxxxxx> wrote:
Hi, nowadays there is many interaction to drag layers (from layers
view, from
catalogue view, from web, etc) to map. I am wondering if someone has
developed
interactions to "drag a feature from map and drop ..."
Should I develop this interaction from scratch?
Is there any interesting peace of code to read?
thanks in advance.
--
Mauricio Pazos
www.axios.es
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User-friendly Desktop Internet GIS (uDig)
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