Re: [udig-devel] Get feature on mousePressed method

[Jody Garnett <jody.garnett@xxxxxxxxx>]

There is also an example tool in the tutorial code examples project that 
goes through all the layers in z order and does a query on each one 
returning the first feature found.

Once you get your feature you have a couple ways of modifying it:
- use an edit command (so the change can be in the undo/redo queue)
- use the featurestore API and call modifyFeatures method. To do this 
you will need a filter to select the feature (use FeatureID filter to 
select a single feature) and the name of the attribute to modify and the 
new value

Jody

Emily Gouge wrote:
> A feature source can take a filter so instead of asking for all 
> features [source.getFeatures()] you can make a filter and only ask for 
> features within that filter [source.getFeatures(myFilter)].
>
> I believe the context associated with your tool should have a 
> getBoundingBox(...) function that should return a bounding box around 
> where the user clicked.  You can then use a FilterFactory class to 
> create a filter.
>
> Have a look at the info tool; it sounds like you are doing something 
> similar.
>
> Emily
>
>
> Alessandro Sferrazza wrote:
> > Hi uDig'gers!
> >
> > I have a Class that extend AbstractEditTool.   
> > I need to get the feature selected by clicking on the map, in the
> > method mousePressed of my class so that I can modify its attributes.
> >
> > I have worked on the following code
> >
> > IMap map = ApplicationGIS.getActiveMap();
> > FeatureSource 
> > source=map.getEditManager().getSelectedLayer().getResource(
> > FeatureSource.class,  new NullProgressMonitor());
> > FeatureCollection collection=source.getFeatures();
> >
> > But it retuns all the features on Selected layer and not the 'Clicked'
> > single one.
> >
> > Regards
> >
> > Alessandro Sferrazza
> > _______________________________________________
> > User-friendly Desktop Internet GIS (uDig)
> > http://udig.refractions.net
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