Hi, to get more then one layer, you have to step down into the eclipse
api and ask the view for what was selected:
ISelection selection =
PlatformUI.getWorkbench().getActiveWorkbenchWindow()
.getActivePage().findView(LayersView.ID).getSite().getSelectionProvider()
.getSelection();
if (selection instanceof TreeSelection) {
TreeSelection treeSelection = (TreeSelection) selection;
Iterator iterator = treeSelection.iterator();
while( iterator.hasNext() ) {
Object object = iterator.next();
if (object instanceof LayerImpl) {
LayerImpl layer = (LayerImpl) object;
YourResourceClass resource = layer.getResource(
YourResourceClass.class, new
NullProgressMonitor());
if (resource != null) {
// do fun with resource
}
}
}
}
Ciao
Andrea
On Fri, Apr 24, 2009 at 4:17 PM, Rui Alves <rui.maia.al...@gmail.com> wrote:
> Hi,
>
> I am using the latest uDig stable version 1.1.1 and I want to have the
> following scenario:
>
> I have a map with 4 layers:
>
> Layer4 - Lines
> Layer3 - Points type C
> Layer2 - Points type B
> Layer1 - Points type A
>
> I want to select (with the typical selection Bounding Box) points on Layer 1
> and layer 3.
>
> Using the shift key I can select multiple layers (on this case Layer 1 and
> layer 3) but when I use the selection tool only the features on the last
> selected layer are selected.
> I made a plug-in that goes through all the layers and select the features on
> the defined bounding box. I can also restrict the selection to the layers
> that are visible.
> How can I restrict the selection to the selected layers (on this case layer
> 1 and 3)?
>
> Here it is the code to select the features in all layers:
>
> Envelope ev;
> Coordinate start;
>
> --------- on mouse pressed ----------
>
> start=getContext().pixelToWorld(e.x, e.y);
> ev.init();
> ev.expandToInclude(start);
>
> --------- on mouse released ----------
> Coordinate end=getContext().pixelToWorld(e.x, e.y);
> ev.expandToInclude(end);
>
>
> for(int layerInd = 0; layerInd <= map.getMapLayers().size() - 1;
> layerInd++)
> {
> ILayer layer = map.getMapLayers().get(layerInd);
>
> if(layer.isVisible())
> {
> Filter filter = layer.createBBoxFilter(ev, null);
> command =
> getContext().getSelectionFactory().createSelectCommand(layer, filter);
> getContext().sendASyncCommand(command);
> }
> }
>
> Thanks,
>
> Rui Alves
>
>
> _______________________________________________
> User-friendly Desktop Internet GIS (uDig)
> http://udig.refractions.net
> http://lists.refractions.net/mailman/listinfo/udig-devel
>
>
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