[udig-devel] checking crs when dragging service into map

[Andrea Antonello]

Thanks Jesse,

> Ok, so there are a few things you can try:
> 
> 1.  Add a listener to the viewport model and when the CRS of the map  
> changes warn the user and undo the last command (you'll have to hack
> a bit to undo the command it goes something like:
> Map map = (Map)event.getViewportModel().getMap();
> map.backwardHistory(); (for RC13)
> map.undo(); (for RC12 and earlier)
> 
> 2.  Create a MapCompositionListener that checks each layer added and  
> removes it (and warns the user) if the layer added is not legal.
> This listener can be added automatically by creating a MapInterceptor
> that activates when a map is opened.  

Huh, I guess I would need both :(
Does 2 do this only on startup or everytime something is added to the
map?

I will run after them and come back with troubles I could find :)

Thanks,
Andrea


> 
> 
> On 30-Nov-07, at 7:35 AM, Andrea Antonello wrote:
> 
> > Hi, since JGrass layers are not reprojectable on the fly, I need to
> > check the crs when they are dragged or imported to a map and in case
> > warn the user and discard the action. Where should I do that best?
> >
> >
> > Andrea
> >
> >
> > PS: btw Jesse, the advice on putting the same check for the case
> > of the
> > catalog into the ServiceExtention works perfect, thanks.
> > _______________________________________________
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> > http://udig.refractions.net
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> 
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