implemented Base Map layers switching

src/main/java/org/gcube/portlets/user/geoportaldataviewer/client/GeoportalDataViewer.java

@@ -1,6 +1,7 @@
 package org.gcube.portlets.user.geoportaldataviewer.client;
 
 import java.util.Iterator;
+import java.util.List;
 
 import org.gcube.application.geoportalcommon.shared.GeoNaDataViewerProfile;
 import org.gcube.application.geoportalcommon.shared.GeoNaItemRef;
@@ -12,6 +13,8 @@ import org.gcube.portlets.user.geoportaldataviewer.client.GeoportalDataViewerCon
 import org.gcube.portlets.user.geoportaldataviewer.client.events.AddedLayerToMapEvent;
 import org.gcube.portlets.user.geoportaldataviewer.client.events.AddedLayerToMapEvent.LAYER_TYPE;
 import org.gcube.portlets.user.geoportaldataviewer.client.events.AddedLayerToMapEventHandler;
+import org.gcube.portlets.user.geoportaldataviewer.client.events.ChangeMapLayerEvent;
+import org.gcube.portlets.user.geoportaldataviewer.client.events.ChangeMapLayerEventHandler;
 import org.gcube.portlets.user.geoportaldataviewer.client.events.ClosedViewDetailsEvent;
 import org.gcube.portlets.user.geoportaldataviewer.client.events.ClosedViewDetailsEventHandler;
 import org.gcube.portlets.user.geoportaldataviewer.client.events.DoActionOnDetailLayersEvent;
@@ -29,7 +32,9 @@ import org.gcube.portlets.user.geoportaldataviewer.client.gis.ExtentWrapped;
 import org.gcube.portlets.user.geoportaldataviewer.client.gis.MapUtils;
 import org.gcube.portlets.user.geoportaldataviewer.client.gis.OpenLayerOSM;
 import org.gcube.portlets.user.geoportaldataviewer.client.ui.GeonaDataViewMainPanel;
+import org.gcube.portlets.user.geoportaldataviewer.client.util.LoaderIcon;
 import org.gcube.portlets.user.geoportaldataviewer.client.util.URLUtil;
+import org.gcube.portlets.user.geoportaldataviewer.shared.gis.BaseMapLayer;
 import org.gcube.portlets.user.geoportaldataviewer.shared.gis.GeoQuery;
 
 import com.google.gwt.core.client.EntryPoint;
@@ -89,11 +94,31 @@ public class GeoportalDataViewer implements EntryPoint {
 	private OLMapManager olMapMng = null;
 
 	int attempt = 0;
+	
+	
+	private LoaderIcon loaderApp = new LoaderIcon("Loading application....");
+	
+	
+	private HTML attributionDiv = new HTML();
 
 	/**
 	 * This is the entry point method.
 	 */
 	public void onModuleLoad() {
+		
+		loaderApp.getElement().getStyle().setZIndex(100);
+		
+		paramWmsRequest = Window.Location.getParameter(GeoportalDataViewerConstants.GET_WMS_PARAMETER);
+		paramGeonaItemType = Window.Location.getParameter(GeoportalDataViewerConstants.GET_GEONA_ITEM_TYPE);
+		paramGeonaItemID = Window.Location.getParameter(GeoportalDataViewerConstants.GET_GEONA_ITEM_ID);
+		paramLayerTitle = Window.Location.getParameter(GeoportalDataViewerConstants.GET_LAYER_TITLE);
+		GWT.log(GeoportalDataViewerConstants.GET_WMS_PARAMETER + " = " + paramWmsRequest);
+		GWT.log(GeoportalDataViewerConstants.GET_GEONA_ITEM_TYPE + " = " + paramGeonaItemType);
+		GWT.log(GeoportalDataViewerConstants.GET_GEONA_ITEM_ID + " = " + paramGeonaItemID);
+		GWT.log(GeoportalDataViewerConstants.GET_LAYER_TITLE + " = " + paramLayerTitle);
+		
+		RootPanel.get(APP_DIV).add(loaderApp);
+		
 		mainPanel = new GeonaDataViewMainPanel(applicationBus, getClientHeight());
 		RootPanel.get(APP_DIV).add(mainPanel);
 
@@ -102,23 +127,38 @@ public class GeoportalDataViewer implements EntryPoint {
 			@Override
 			public void execute() {
 
-				olMapMng = new OLMapManager(mainPanel.getMapPanel().getElement().getId(),
-						layerManager.getLayerManagerBus());
-				layerManager.setOlMap(olMapMng.getOLOSMMap());
-				mainPanel.setMap(olMapMng.getOLOSMMap());
-				
-				
-				String attributionHTML = "<div class='map-credits'><div class='map-attribution-container'>"
-						+olMapMng.getOLOSMMap().getMapAttribution()+
-						"</div></div>";
-				
+				//LOADING THE BASE MAP LAYERS
+				GeoportalDataViewerServiceAsync.Util.getInstance().getListBaseLayers(new AsyncCallback<List<BaseMapLayer>>() {
+
+					@Override
+					public void onFailure(Throwable caught) {
+						RootPanel.get(APP_DIV).remove(loaderApp);
+						Window.alert("Error occurred on instancing the GeoPortale Viewer. Please, contact the support");
+					}
+
+					@Override
+					public void onSuccess(List<BaseMapLayer> listBaseMapLayers) {
+						RootPanel.get(APP_DIV).remove(loaderApp);
+						loadGeonaDataViewerProfile();
+						mainPanel.setBaseLayers(listBaseMapLayers);
+						
+						BaseMapLayer firstBaseLayer = listBaseMapLayers.get(0);
+						//Passing the first base map layer that will be applied as first base layer
+						olMapMng = new OLMapManager(mainPanel.getMapPanel().getElement().getId(),
+								layerManager.getLayerManagerBus(), firstBaseLayer);
+						layerManager.setOlMap(olMapMng.getOLOSMMap());
+						mainPanel.setMap(olMapMng.getOLOSMMap());
+						
+						//mainPanel.setMapAttribution(olMapMng.getOLOSMMap().getMapAttribution());
+						updateSize();
+						ScriptInjector.fromUrl("//cdnjs.cloudflare.com/ajax/libs/nanogallery2/3.0.5/jquery.nanogallery2.min.js")
+								.setWindow(ScriptInjector.TOP_WINDOW).inject();
+						
+					}
 
-				RootPanel.get(APP_DIV).add(new HTML(attributionHTML));
+					
+				});
 				
-				//mainPanel.setMapAttribution(olMapMng.getOLOSMMap().getMapAttribution());
-				updateSize();
-				ScriptInjector.fromUrl("//cdnjs.cloudflare.com/ajax/libs/nanogallery2/3.0.5/jquery.nanogallery2.min.js")
-						.setWindow(ScriptInjector.TOP_WINDOW).inject();
 			}
 		});
 
@@ -129,28 +169,15 @@ public class GeoportalDataViewer implements EntryPoint {
 			}
 		});
 
-		paramWmsRequest = Window.Location.getParameter(GeoportalDataViewerConstants.GET_WMS_PARAMETER);
-		paramGeonaItemType = Window.Location.getParameter(GeoportalDataViewerConstants.GET_GEONA_ITEM_TYPE);
-		// paramUUID =
-		// Window.Location.getParameter(GeoportalDataViewerConstants.GET_UUID_PARAMETER);
-		paramGeonaItemID = Window.Location.getParameter(GeoportalDataViewerConstants.GET_GEONA_ITEM_ID);
-		paramLayerTitle = Window.Location.getParameter(GeoportalDataViewerConstants.GET_LAYER_TITLE);
-		GWT.log(GeoportalDataViewerConstants.GET_WMS_PARAMETER + " = " + paramWmsRequest);
-		GWT.log(GeoportalDataViewerConstants.GET_GEONA_ITEM_TYPE + " = " + paramGeonaItemType);
-		GWT.log(GeoportalDataViewerConstants.GET_GEONA_ITEM_ID + " = " + paramGeonaItemID);
-		// GWT.log(GeoportalDataViewerConstants.GET_UUID_PARAMETER + " = " + paramUUID);
-		GWT.log(GeoportalDataViewerConstants.GET_LAYER_TITLE + " = " + paramLayerTitle);
-
-		// VALIDATING THE LONG FORMAT FOR GID
-//		try {
-//			if (paramGeonaItemID != null)
-//				Long.parseLong(paramGeonaItemID);
-//		} catch (Exception e) {
-//			Window.alert("Bad format for parameter " + GeoportalDataViewerConstants.GET_GEONA_ITEM_ID
-//					+ ". It must be a Long");
-//			paramGeonaItemID = null;
-//		}
+	
 
+		bindEvents();
+		
+		RootPanel.get(APP_DIV).add(attributionDiv);
+	}
+	
+	private void loadGeonaDataViewerProfile() {
+		
 		Scheduler.get().scheduleDeferred(new ScheduledCommand() {
 
 			@Override
@@ -206,8 +233,7 @@ public class GeoportalDataViewer implements EntryPoint {
 						});
 			}
 		});
-
-		bindEvents();
+		
 	}
 
 	/**
@@ -410,6 +436,30 @@ public class GeoportalDataViewer implements EntryPoint {
 
 			}
 		});
+		
+		
+		applicationBus.addHandler(ChangeMapLayerEvent.TYPE, new ChangeMapLayerEventHandler() {
+
+			@Override
+			public void onChangeBaseMapLayer(ChangeMapLayerEvent changeMapLayerEvent) {
+
+				BaseMapLayer baseLayer = changeMapLayerEvent.getBaseMapLayer();
+
+				if (baseLayer == null)
+					return;
+
+				String attributionHTML = "<div class='map-credits'><div class='map-credits-container'>"
+						+ baseLayer.getAttribution() + "</div></div>";
+				olMapMng.getOLOSMMap().changeBaseMap(baseLayer);
+				
+				//THE OSM Contributors are automatically added by gwt-ol, other ones not.
+				if(!baseLayer.getType().equals(BaseMapLayer.OL_BASE_MAP.OSM)) {
+					attributionDiv.setHTML(attributionHTML);
+				}else
+					attributionDiv.setHTML("");
+
+			}
+		});
 
 	}
 

src/main/java/org/gcube/portlets/user/geoportaldataviewer/client/GeoportalDataViewerService.java

@@ -9,6 +9,7 @@ import org.gcube.application.geoportalcommon.shared.products.ConcessioneDV;
 import org.gcube.application.geoportalcommon.shared.products.model.LayerConcessioneDV;
 import org.gcube.application.geoportalcommon.shared.products.model.UploadedImageDV;
 import org.gcube.portlets.user.geoportaldataviewer.shared.GeoNaSpatialQueryResult;
+import org.gcube.portlets.user.geoportaldataviewer.shared.gis.BaseMapLayer;
 import org.gcube.portlets.user.geoportaldataviewer.shared.gis.LayerObject;
 import org.gcube.portlets.user.geoportaldataviewer.shared.gis.wms.GeoInformationForWMSRequest;
 
@@ -124,5 +125,7 @@ public interface GeoportalDataViewerService extends RemoteService {
 	List<GeoNaSpatialQueryResult> getWFSFeatures(List<LayerObject> layerObjects, String mapSrsName,
 			BoundsMap selectBBOX, int maxWFSFeature, double zoomLevel);
 
+	List<BaseMapLayer> getListBaseLayers();
+
 
 }

src/main/java/org/gcube/portlets/user/geoportaldataviewer/client/GeoportalDataViewerServiceAsync.java

@@ -9,6 +9,7 @@ import org.gcube.application.geoportalcommon.shared.products.ConcessioneDV;
 import org.gcube.application.geoportalcommon.shared.products.model.LayerConcessioneDV;
 import org.gcube.application.geoportalcommon.shared.products.model.UploadedImageDV;
 import org.gcube.portlets.user.geoportaldataviewer.shared.GeoNaSpatialQueryResult;
+import org.gcube.portlets.user.geoportaldataviewer.shared.gis.BaseMapLayer;
 import org.gcube.portlets.user.geoportaldataviewer.shared.gis.LayerObject;
 import org.gcube.portlets.user.geoportaldataviewer.shared.gis.wms.GeoInformationForWMSRequest;
 
@@ -58,4 +59,6 @@ public interface GeoportalDataViewerServiceAsync {
 	void getWFSFeatures(List<LayerObject> layerObjects, String mapSrsName, BoundsMap selectBBOX, int maxWFSFeature,
 			double zoomLevel, AsyncCallback<List<GeoNaSpatialQueryResult>> callback);
 
+	void getListBaseLayers(AsyncCallback<List<BaseMapLayer>> callback);
+
 }

src/main/java/org/gcube/portlets/user/geoportaldataviewer/client/OLMapManager.java

@@ -10,6 +10,7 @@ import org.gcube.portlets.user.geoportaldataviewer.client.gis.OpenLayerOSM;
 import org.gcube.portlets.user.geoportaldataviewer.client.ui.map.ExtentMapUtil;
 import org.gcube.portlets.user.geoportaldataviewer.client.ui.map.ExtentMapUtil.Location;
 import org.gcube.portlets.user.geoportaldataviewer.client.ui.map.ExtentMapUtil.PLACE;
+import org.gcube.portlets.user.geoportaldataviewer.shared.gis.BaseMapLayer;
 import org.gcube.portlets.user.geoportaldataviewer.shared.gis.GeoQuery;
 import org.gcube.portlets.user.geoportaldataviewer.shared.gis.GeoQuery.TYPE;
 
@@ -45,19 +46,21 @@ public class OLMapManager {
 	 *
 	 * @param targetId        the target id
 	 * @param layerManagerBus the layer manager bus
+	 * @param baseMapLayer the base map layer
 	 */
-	public OLMapManager(String targetId, HandlerManager layerManagerBus) {
+	public OLMapManager(String targetId, HandlerManager layerManagerBus, BaseMapLayer baseMapLayer) {
 		this.targetId = targetId;
 		this.layerManagerBus = layerManagerBus;
-		instanceOLMap();
+		instanceOLMap(baseMapLayer);
 	}
 
 	/**
 	 * Instance OL map.
+	 * @param baseMapLayer 
 	 */
-	public void instanceOLMap() {
+	public void instanceOLMap(BaseMapLayer baseMapLayer) {
 
-		olMap = new OpenLayerOSM(targetId, layerManagerBus) {
+		olMap = new OpenLayerOSM(targetId, layerManagerBus, baseMapLayer) {
 
 			@Override
 			public void clickListener(MapBrowserEvent event) {

src/main/java/org/gcube/portlets/user/geoportaldataviewer/client/events/ChangeMapLayerEvent.java

@@ -0,0 +1,57 @@
+package org.gcube.portlets.user.geoportaldataviewer.client.events;
+
+import org.gcube.portlets.user.geoportaldataviewer.shared.gis.BaseMapLayer;
+
+import com.google.gwt.event.shared.GwtEvent;
+
+/**
+ * The Class ChangeMapLayerEvent.
+ *
+ * @author Francesco Mangiacrapa at ISTI-CNR francesco.mangiacrapa@isti.cnr.it
+ * 
+ *         Nov 12, 2021
+ */
+public class ChangeMapLayerEvent extends GwtEvent<ChangeMapLayerEventHandler> {
+	public static Type<ChangeMapLayerEventHandler> TYPE = new Type<ChangeMapLayerEventHandler>();
+	private BaseMapLayer baseMapLayer;
+
+	/**
+	 * Instantiates a new change map layer event.
+	 *
+	 * @param baseMapLayer the base map layer
+	 */
+	public ChangeMapLayerEvent(BaseMapLayer baseMapLayer) {
+		this.baseMapLayer = baseMapLayer;
+
+	}
+
+	/**
+	 * Gets the associated type.
+	 *
+	 * @return the associated type
+	 */
+	@Override
+	public Type<ChangeMapLayerEventHandler> getAssociatedType() {
+		return TYPE;
+	}
+
+	/**
+	 * Dispatch.
+	 *
+	 * @param handler the handler
+	 */
+	@Override
+	protected void dispatch(ChangeMapLayerEventHandler handler) {
+		handler.onChangeBaseMapLayer(this);
+
+	}
+
+	/**
+	 * Gets the base map layer.
+	 *
+	 * @return the base map layer
+	 */
+	public BaseMapLayer getBaseMapLayer() {
+		return baseMapLayer;
+	}
+}

src/main/java/org/gcube/portlets/user/geoportaldataviewer/client/events/ChangeMapLayerEventHandler.java

@@ -0,0 +1,20 @@
+package org.gcube.portlets.user.geoportaldataviewer.client.events;
+
+import com.google.gwt.event.shared.EventHandler;
+
+/**
+ * The Interface ChangeMapLayerEventHandler.
+ *
+ * @author Francesco Mangiacrapa at ISTI-CNR francesco.mangiacrapa@isti.cnr.it
+ * 
+ * Nov 12, 2021
+ */
+public interface ChangeMapLayerEventHandler extends EventHandler {
+
+	/**
+	 * On change base map layer.
+	 *
+	 * @param changeMapLayerEvent the change map layer event
+	 */
+	void onChangeBaseMapLayer(ChangeMapLayerEvent changeMapLayerEvent);
+}

src/main/java/org/gcube/portlets/user/geoportaldataviewer/client/gis/OpenLayerOSM.java

@@ -142,20 +142,15 @@ public abstract class OpenLayerOSM {
 
 	private Layer baseLayerTile;
 
-	private String mapAttribution;
 
 	/**
 	 * Instantiates a new open layer OSM.
 	 *
 	 * @param divTargetId the div target id
-	 * @param eventBus    the event bus
+	 * @param eventBus the event bus
+	 * @param baseLayer the base layer
 	 */
-	/*
-	 * (non-Javadoc)
-	 * 
-	 * @see de.desjardins.ol3.demo.client.example.Example#show()
-	 */
-	public OpenLayerOSM(String divTargetId, HandlerManager eventBus) {
+	public OpenLayerOSM(String divTargetId, HandlerManager eventBus, BaseMapLayer baseLayer) {
 		this.eventBus = eventBus;
 
 		for (int i = 0; i < 100; i++) {
@@ -191,12 +186,6 @@ public abstract class OpenLayerOSM {
 		map.addInteraction(new KeyboardPan());
 		map.addInteraction(new KeyboardZoom());
 		
-		
-		String attribution = "© <a href='https://www.mapbox.com/about/maps/'>Mapbox</a> © <a href='http://www.openstreetmap.org/copyright'>OpenStreetMap</a> <strong><a href='https://www.mapbox.com/map-feedback/' target='_blank'>Improve this map</a></strong>";
-		BaseMapLayer baseLayer = new BaseMapLayer(
-				"https://{a-d}.tiles.mapbox.com/v4/mapbox.satellite/{z}/{x}/{y}.png?access_token=pk.eyJ1IjoiZDRzY2llbmNlIiwiYSI6ImNpcW1nZjE4MDAwMXNod25rdHJsemRoNTQifQ.YPNkNLb8EzjThpvJl1tg4w",
-				attribution, BaseMapLayer.OL_BASE_MAP.MAPBOX);
-
 		//applying base map
 		changeBaseMap(baseLayer);
 
@@ -204,11 +193,15 @@ public abstract class OpenLayerOSM {
 
 	}
 
+	/**
+	 * Change base map.
+	 *
+	 * @param baseLayer the base layer
+	 */
 	public void changeBaseMap(BaseMapLayer baseLayer) {
 
 		BaseMapLayer.OL_BASE_MAP baseMap = baseLayer.getType() == null ? BaseMapLayer.OL_BASE_MAP.OSM
 				: baseLayer.getType();
-		this.mapAttribution = baseLayer.getAttribution();
 
 		try {
 			if (baseLayerTile != null)
@@ -221,8 +214,12 @@ public abstract class OpenLayerOSM {
 		case OSM:
 			XyzOptions xyzOptions = OLFactory.createOptions();
 			Osm osmSource = new Osm(xyzOptions);
+			osmSource.setUrl(baseLayer.getUrl());
+			//setAttributions is buggy
+			//osmSource.setAttributions(baseLayer.getAttribution());
 			LayerOptions layerOptions = OLFactory.createOptions();
 			layerOptions.setSource(osmSource);
+			layerOptions.setZIndex(0);
 			baseLayerTile = new Tile(layerOptions);
 
 			break;
@@ -231,18 +228,23 @@ public abstract class OpenLayerOSM {
 
 			XyzOptions xyzOptions2 = OLFactory.createOptions();
 			Xyz xyz = new Xyz(xyzOptions2);
-			xyz.setAttributions(mapAttribution);
+			//setAttributions is buggy
+			//xyz.setAttributions(baseLayer.getAttribution());
 			xyz.setUrl(baseLayer.getUrl());
+
 			LayerOptions layerOptions2 = OLFactory.createOptions();
 			layerOptions2.setSource(xyz);
+			layerOptions2.setZIndex(0);
 			baseLayerTile = new Tile(layerOptions2);
+	
 
 			break;
 		}
 
 		// map == null at init time
-		if (map != null)
+		if (map != null) {
 			map.addLayer(baseLayerTile);
+		}
 
 	}
 
@@ -863,8 +865,8 @@ public abstract class OpenLayerOSM {
 	/**
 	 * Swap details layers.
 	 *
-	 * @param layerSource the source index
-	 * @param layerTarget the target index
+	 * @param swapLSource the swap L source
+	 * @param swapLTarget the swap L target
 	 */
 	public void swapDetailsLayers(SwapLayer swapLSource, SwapLayer swapLTarget) {
 
@@ -895,8 +897,4 @@ public abstract class OpenLayerOSM {
 		return map.get((map.keySet().toArray())[index]);
 	}
 
-	public String getMapAttribution() {
-		return mapAttribution;
-	}
-
 }

src/main/java/org/gcube/portlets/user/geoportaldataviewer/client/ui/GeonaDataViewMainPanel.java

@@ -1,14 +1,18 @@
 package org.gcube.portlets.user.geoportaldataviewer.client.ui;
 
+import java.util.List;
+
 import org.gcube.application.geoportalcommon.shared.GeoNaItemRef;
 import org.gcube.application.geoportalcommon.shared.products.ConcessioneDV;
 import org.gcube.application.geoportalcommon.shared.products.model.RecordDV;
 import org.gcube.portlets.user.geoportaldataviewer.client.GeoportalDataViewerConstants.MAP_PROJECTION;
+import org.gcube.portlets.user.geoportaldataviewer.client.events.ChangeMapLayerEvent;
 import org.gcube.portlets.user.geoportaldataviewer.client.events.MapExtentToEvent;
 import org.gcube.portlets.user.geoportaldataviewer.client.gis.OpenLayerOSM;
 import org.gcube.portlets.user.geoportaldataviewer.client.resources.Images;
 import org.gcube.portlets.user.geoportaldataviewer.client.ui.map.ExtentMapUtil;
 import org.gcube.portlets.user.geoportaldataviewer.client.ui.map.ExtentMapUtil.Location;
+import org.gcube.portlets.user.geoportaldataviewer.shared.gis.BaseMapLayer;
 
 import com.github.gwtbootstrap.client.ui.Button;
 import com.github.gwtbootstrap.client.ui.NavLink;
@@ -18,6 +22,8 @@ import com.google.gwt.core.client.GWT;
 import com.google.gwt.dom.client.Style.Unit;
 import com.google.gwt.event.dom.client.ClickEvent;
 import com.google.gwt.event.dom.client.ClickHandler;
+import com.google.gwt.event.logical.shared.ValueChangeEvent;
+import com.google.gwt.event.logical.shared.ValueChangeHandler;
 import com.google.gwt.event.shared.GwtEvent;
 import com.google.gwt.event.shared.HandlerManager;
 import com.google.gwt.uibinder.client.UiBinder;
@@ -27,7 +33,9 @@ import com.google.gwt.user.client.ui.FlowPanel;
 import com.google.gwt.user.client.ui.HTMLPanel;
 import com.google.gwt.user.client.ui.Image;
 import com.google.gwt.user.client.ui.Label;
+import com.google.gwt.user.client.ui.RadioButton;
 import com.google.gwt.user.client.ui.ScrollPanel;
+import com.google.gwt.user.client.ui.SimplePanel;
 import com.google.gwt.user.client.ui.Widget;
 
 /**
@@ -83,12 +91,17 @@ public class GeonaDataViewMainPanel extends Composite {
 
 	@UiField
 	HTMLPanel panelAttribution;
+	
+	@UiField
+	HTMLPanel panelBaseLayers;
 
 	private MapPanel mapPanel;
 
 	private OpenLayerOSM map;
 
 	private HandlerManager applicationBus;
+	
+	
 
 	/**
 	 * Instantiates a new geona data view main panel.
@@ -122,7 +135,7 @@ public class GeonaDataViewMainPanel extends Composite {
 		bindEvents();
 
 	}
-
+	
 	private void bindEvents() {
 
 		layersDDB.addClickHandler(new ClickHandler() {
@@ -332,5 +345,39 @@ public class GeonaDataViewMainPanel extends Composite {
 		panelAttribution.add(label);
 		panelAttribution.add(p);
 	}
+	
+	public void setBaseLayers(List<BaseMapLayer> listBaseLayers) {
+		
+		if(listBaseLayers==null)
+			return;
+		
+		int i = 0;
+
+		for (BaseMapLayer baseMapLayer : listBaseLayers) {
+			
+			RadioButton radio = new RadioButton("base-layer");
+			radio.setText(baseMapLayer.getName());
+			if(i==0) {
+				radio.setValue(true, true);
+			}
+			
+			radio.addValueChangeHandler(new ValueChangeHandler<Boolean>() {
+				
+				@Override
+				public void onValueChange(ValueChangeEvent<Boolean> event) {
+					applicationBus.fireEvent(new ChangeMapLayerEvent(baseMapLayer));
+					
+				}
+			});
+			
+			SimplePanel sp = new SimplePanel(radio);
+			sp.getElement().addClassName("form-inline");
+			sp.getElement().addClassName("map-layers-radio");
+			panelBaseLayers.add(sp);
+			i++;
+		}
+		
+	}
+
 
 }

src/main/java/org/gcube/portlets/user/geoportaldataviewer/client/ui/GeonaDataViewMainPanel.ui.xml

@@ -16,6 +16,10 @@
 		<g:HTMLPanel ui:field="mainContainerPanel">
 			<g:HTMLPanel ui:field="mainToolBar"
 				addStyleNames="inner-toolbar">
+				<b:DropdownButton type="LINK" text="Map">
+					<g:HTMLPanel ui:field="panelBaseLayers">
+					</g:HTMLPanel>
+				</b:DropdownButton>
 				<b:DropdownButton type="LINK" text=" " icon="INFO">
 					<g:HTMLPanel ui:field="panelInfo"
 						addStyleNames="info-interaction">
@@ -31,7 +35,7 @@
 							Click on the Points shown on the Map to view their features
 						</b:Paragraph>
 						<g:HTMLPanel ui:field="panelAttribution"
-						addStyleNames="info-interaction" visible="false">
+							addStyleNames="info-interaction" visible="false">
 						</g:HTMLPanel>
 					</g:HTMLPanel>
 				</b:DropdownButton>

src/main/java/org/gcube/portlets/user/geoportaldataviewer/server/GeoportalDataViewerServiceImpl.java

@@ -34,6 +34,7 @@ import org.gcube.portlets.user.geoportaldataviewer.server.mongoservice.Concessio
 import org.gcube.portlets.user.geoportaldataviewer.server.mongoservice.accesspolicy.GeoNACheckAccessPolicy;
 import org.gcube.portlets.user.geoportaldataviewer.server.util.SessionUtil;
 import org.gcube.portlets.user.geoportaldataviewer.shared.GeoNaSpatialQueryResult;
+import org.gcube.portlets.user.geoportaldataviewer.shared.gis.BaseMapLayer;
 import org.gcube.portlets.user.geoportaldataviewer.shared.gis.LayerObject;
 import org.gcube.portlets.user.geoportaldataviewer.shared.gis.wfs.FeatureRow;
 import org.gcube.portlets.user.geoportaldataviewer.shared.gis.wms.GeoInformationForWMSRequest;
@@ -660,5 +661,31 @@ public class GeoportalDataViewerServiceImpl extends RemoteServiceServlet impleme
 		}
 
 	}
+	
+	@Override
+	public List<BaseMapLayer> getListBaseLayers() {
+
+		List<BaseMapLayer> listBL = new ArrayList<BaseMapLayer>();
+
+		// OSM
+		String attribution = "© <a href='http://www.openstreetmap.org/copyright'>OpenStreetMap</a>";
+		BaseMapLayer baseLayer = new BaseMapLayer("Open Street Map", "https://tile.openstreetmap.org/{z}/{x}/{y}.png", attribution,
+				BaseMapLayer.OL_BASE_MAP.OSM);
+
+		listBL.add(baseLayer);
+		
+		
+		// MAPBOX
+		attribution = "© <a href='https://www.mapbox.com/about/maps/'>Mapbox</a> © <a href='http://www.openstreetmap.org/copyright'>OpenStreetMap</a> <a href='https://www.mapbox.com/map-feedback/' target='_blank'>Improve this map</a>";
+		baseLayer = new BaseMapLayer("MapBox Satellite",
+				"https://{a-d}.tiles.mapbox.com/v4/mapbox.satellite/{z}/{x}/{y}.png?access_token=pk.eyJ1IjoiZDRzY2llbmNlIiwiYSI6ImNpcW1nZjE4MDAwMXNod25rdHJsemRoNTQifQ.YPNkNLb8EzjThpvJl1tg4w",
+				attribution, BaseMapLayer.OL_BASE_MAP.MAPBOX);
+
+		listBL.add(baseLayer);
+
+
+		return listBL;
+
+	}
 
 }

src/main/java/org/gcube/portlets/user/geoportaldataviewer/shared/gis/BaseMapLayer.java

@@ -7,7 +7,7 @@ import java.io.Serializable;
  *
  * @author Francesco Mangiacrapa at ISTI-CNR francesco.mangiacrapa@isti.cnr.it
  * 
- * Nov 11, 2021
+ *         Nov 11, 2021
  */
 public class BaseMapLayer implements Serializable {
 
@@ -21,12 +21,13 @@ public class BaseMapLayer implements Serializable {
 	 *
 	 * @author Francesco Mangiacrapa at ISTI-CNR francesco.mangiacrapa@isti.cnr.it
 	 * 
-	 * Nov 11, 2021
+	 *         Nov 11, 2021
 	 */
 	public static enum OL_BASE_MAP {
 		OSM, MAPBOX, OTHER
 	};
 
+	private String name;
 	private String url;
 	private String attribution;
 	private OL_BASE_MAP type;
@@ -38,72 +39,59 @@ public class BaseMapLayer implements Serializable {
 
 	}
 
-	/**
-	 * Instantiates a new base map layer.
-	 *
-	 * @param url the url
-	 * @param attribution the attribution
-	 * @param type the type
-	 */
-	public BaseMapLayer(String url, String attribution, OL_BASE_MAP type) {
+	public BaseMapLayer(String name, String url, String attribution, OL_BASE_MAP type) {
 		super();
+		this.name = name;
 		this.url = url;
 		this.attribution = attribution;
 		this.type = type;
 	}
 
-	/**
-	 * Gets the url.
-	 *
-	 * @return the url
-	 */
+	public String getName() {
+		return name;
+	}
+
 	public String getUrl() {
 		return url;
 	}
 
-	/**
-	 * Gets the attribution.
-	 *
-	 * @return the attribution
-	 */
 	public String getAttribution() {
 		return attribution;
 	}
 
-	/**
-	 * Gets the type.
-	 *
-	 * @return the type
-	 */
 	public OL_BASE_MAP getType() {
 		return type;
 	}
 
-	/**
-	 * Sets the url.
-	 *
-	 * @param url the new url
-	 */
+	public void setName(String name) {
+		this.name = name;
+	}
+
 	public void setUrl(String url) {
 		this.url = url;
 	}
 
-	/**
-	 * Sets the attribution.
-	 *
-	 * @param attribution the new attribution
-	 */
 	public void setAttribution(String attribution) {
 		this.attribution = attribution;
 	}
 
-	/**
-	 * Sets the type.
-	 *
-	 * @param type the new type
-	 */
 	public void setType(OL_BASE_MAP type) {
 		this.type = type;
 	}
 
+	@Override
+	public String toString() {
+		StringBuilder builder = new StringBuilder();
+		builder.append("BaseMapLayer [name=");
+		builder.append(name);
+		builder.append(", url=");
+		builder.append(url);
+		builder.append(", attribution=");
+		builder.append(attribution);
+		builder.append(", type=");
+		builder.append(type);
+		builder.append("]");
+		return builder.toString();
+	}
+
 }

src/main/webapp/GeoportalDataViewer.css

@@ -364,12 +364,26 @@ body {
 	max-height: 25px;
 }
 
-.map-attribution-container {
+.map-credits-container {
 	bottom: 0;
 	right: 0;
 	position: absolute;
 	display: block;
-	margin: 10px 5px;
+	margin: 0px 0px;
 	padding: 2px 4px;
 	background: white;
+}
+
+.map-layers-radio {
+	margin-left: 5px;
+}
+
+.map-layers-radio input {
+	margin-top: 0 !important;
+	margin-left: 5px;
+}
+
+.map-layers-radio label {
+	margin-left: 5px;
+	padding-top: 5px;
 }