[udig-devel] Polygons drawn with PolygonTool not in my FeatureStore...

[Jesse Eichar]

You are correct.  You need a behaviour that will change the current  
state (on the ToolHandler if I remember correctly) from create to  
NONE or MODIFY?  Or something like that.  I beleive that is what  
terminates the editing.

Jesse
On Aug 3, 2007, at 12:01 AM, tony.roth at GMX.de wrote:

> If I override the initAcceptBehaviour() method (addAcceptBehaviour  
> doesn't exist) with an empty method, it isn't possible to finish  
> drawing since the double click is not recognized / accepted. ...  
> I'll play with that, perhaps I find a solution.
>
> thanks for your hint
>
> tony roth
>
>
>
> I don't see anything obvious I'm afraid.  I could suggest another way
> of doing this though.  You could make a new Tool that extends the
> PolygonTool and overrides the addAcceptBehaviours() method.  The
> overridden method would add a new behaviour which could either add
> the created polygon to the Layer's black board (or just do nothing).
> Then your search method could use the shape on the layer's blackboard
> (you wouldn't need a dedicated layer for this) to construct the
> search query.  If you did not add any new behaviour (just overrode
> the addAcceptBehaviours method with an empty method) then you could
> use the shape on the EditBlackboard to construct your query.  To get
> the correct blackboard do:  EditblackboardUtils.getEditBlackboard
> ( ApplicationGIS.createContext(layer.getMap),  layer ).
>
>
> Jesse
>
>
>
> On Aug 2, 2007, at 7:11 AM, tony.roth at GMX.de wrote:
>
> >
> > One wish of my users is to get a 'geo referenced' search. (don't
> > know if
> > it's the correct english word)
> >
> > They want to draw a polygon on the map, click on a search button,
> > enter
> > some additional restrictions for the query and finally send the
> > query. As
> > result they want the elements shown in the map.
> >
> > I will use a dedicated polygon layer for that. The user can draw the
> > polygon with the PolygonTool. To prevent queries with more than one
> > polygon
> > the layer shll just store one feature/polygon. If the user draws a
> > polygon
> > the old one will be removed.
> >
> > What's the best way to realize this?
> > I tried it this way but failed:
> >
> > // Featuretypebuilder, Ressource,....
> > // finally I have the layer :
> >
> >     final Layer l = layer;
> >     l.addListener(new ILayerListener(){
> >      public void refresh(LayerEvent event) {
> >       // debug print
> >       System.out.println(event.getType().name());
> >       if (event.getType()== EventType.EDIT_EVENT){
> >        try {
> >         FeatureStore fs = l.getGeoResource().resolve
> > (FeatureStore.class,
> >         null);
> >         FeatureIterator fI = fs.getFeatures().features();
> >         List featureList = new ArrayList();
> >         while (fI.hasNext()){
> >          featureList.add(fI.next());
> >         }
> >         if (featureList.size() > 1){
> >          // remove all features
> >          fs.removeFeatures(Filter.NONE);
> >          // add the last one
> >          fs.addFeatures(DataUtilities.collection(new
> >          Feature[]{featureList.get(featureList.size()-1)}));
> >          l.refresh(null);
> >         }
> >        } catch (IOException e) {
> >         // TODO Auto-generated catch block
> >         e.printStackTrace();
> >        }
> >       }
> >      }
> >     });
> >
> >
> > Even I draw a some polygons and see them in my application ths
> > featureList
> > is empty. The event is thrown and the layerListener activated and  
> the
> > FeatureStroe is not null.
> >
> > What's wrong in my code? Or a bad approach? Has someone a better
> > idea to
> > realize this functionality?
> >
> > Thank you,
> > tony roth
> >
> > still using 1.1RC8 :)
> >
> > _______________________________________________
> > User-friendly Desktop Internet GIS (uDig)
> > http://udig.refractions.net
> > http://lists.refractions.net/mailman/listinfo/udig-devel
>
> _______________________________________________
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> http://udig.refractions.net
> http://lists.refractions.net/mailman/listinfo/udig-devel
>
> _______________________________________________
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> http://udig.refractions.net
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