import java.io.File;

import org.gvsig.app.ApplicationLocator;
import org.gvsig.app.ApplicationManager;
import org.gvsig.app.project.documents.view.ViewDocument;
import org.gvsig.app.project.documents.view.ViewManager;
import org.gvsig.fmap.dal.DALLocator;
import org.gvsig.fmap.dal.DataManager;
import org.gvsig.fmap.dal.DataParameters;
import org.gvsig.fmap.dal.DataStore;
import org.gvsig.fmap.mapcontext.MapContext;
import org.gvsig.fmap.mapcontext.MapContextLocator;
import org.gvsig.fmap.mapcontext.MapContextManager;
import org.gvsig.fmap.mapcontext.layers.FLayer;

def main() {

  ApplicationManager application = ApplicationLocator.getManager();

  File[] files = application.showOpenFileDialog(
    "Select a raster file",
    new File(System.getProperty("user.home"))
  );
  if( files == null || files.length<1 ) {
    application.messageDialog("Must select a raster file","Warning",0);
    return;
  }
  File rasterFile = files[0]

  ViewDocument view = (ViewDocument) application.getActiveDocument(
    ViewManager.TYPENAME
  );
  if( view == null ) {
    application.messageDialog("There must be an active view.","Warning",0);
    return;
  }
  MapContext mapContext = view.getMapContext();
  if (mapContext != null) {
      // Create the DataManager
      DataManager dataManager = DALLocator.getDataManager();
      // Create the store parameters that we need to load the raster from the DataManager
      DataParameters parameters = dataManager.createStoreParameters("Gdal Store");
      // Fill the parameters
      parameters.setDynValue("uri", rasterFile.toURI());
      // Open the store with the parameters from the DataManager
      DataStore store = dataManager.openStore("Gdal Store", parameters);

      // Make a layer name based on the raster file
      String layerName = store.getName();

      // Create the raster layer from the MapContextManageer
      MapContextManager mcm = MapContextLocator.getMapContextManager();
      FLayer rasterLayer = mcm.createLayer(layerName, store);

      // Add the raster layer to the MapContext of the view
      mapContext.getLayers().addLayer(rasterLayer);
  }

}