From 2ba6472e1067be80bbc9ad7153ac14e6096d398f Mon Sep 17 00:00:00 2001
From: "francesco.mangiacrapa" <francesco.mangiacrapa@isti.cnr.it>
Date: Wed, 11 Nov 2020 17:58:36 +0100
Subject: [PATCH] trying to center map on WMS Layer

---
 .../client/gis/LightOpenLayerOSM.java         | 17 ++++++++++++-
 .../client/ui/map/MapView.java                | 25 +++++++++++++------
 2 files changed, 33 insertions(+), 9 deletions(-)

diff --git a/src/main/java/org/gcube/portlets/user/geoportaldataviewer/client/gis/LightOpenLayerOSM.java b/src/main/java/org/gcube/portlets/user/geoportaldataviewer/client/gis/LightOpenLayerOSM.java
index 015bb67..e06c394 100644
--- a/src/main/java/org/gcube/portlets/user/geoportaldataviewer/client/gis/LightOpenLayerOSM.java
+++ b/src/main/java/org/gcube/portlets/user/geoportaldataviewer/client/gis/LightOpenLayerOSM.java
@@ -7,6 +7,7 @@ import org.gcube.portlets.user.geoportaldataviewer.shared.gis.GeoQuery.TYPE;
 
 import com.google.gwt.core.client.GWT;
 
+import ol.Collection;
 import ol.Coordinate;
 import ol.Feature;
 import ol.Map;
@@ -20,6 +21,7 @@ import ol.event.EventListener;
 import ol.geom.Point;
 import ol.interaction.KeyboardPan;
 import ol.interaction.KeyboardZoom;
+import ol.layer.Base;
 import ol.layer.Image;
 import ol.layer.LayerOptions;
 import ol.layer.Tile;
@@ -189,9 +191,22 @@ import ol.style.TextOptions;
 		ol.layer.Image wmsLayer = new ol.layer.Image(layerOptions);
 		//visibleLayerItems 
 		map.addLayer(wmsLayer);
-		
+
 		return wmsLayer;
 	}
+	
+	
+	/**
+	 * Gets the first layer.
+	 *
+	 * @return the first layer
+	 */
+	public Image getFirstLayer() {
+		if(map.getLayers()!=null) {
+			return (Image) map.getLayers().getArray()[0];
+		}
+		return null;
+	}
 
 	
 	/**
diff --git a/src/main/java/org/gcube/portlets/user/geoportaldataviewer/client/ui/map/MapView.java b/src/main/java/org/gcube/portlets/user/geoportaldataviewer/client/ui/map/MapView.java
index 51cb24d..b902b9c 100644
--- a/src/main/java/org/gcube/portlets/user/geoportaldataviewer/client/ui/map/MapView.java
+++ b/src/main/java/org/gcube/portlets/user/geoportaldataviewer/client/ui/map/MapView.java
@@ -115,14 +115,23 @@ import ol.layer.Image;
 
 			@Override
 			public void execute() {
-				Image layer = olsm.addWMSLayer(mapServerHost, layerName);	
-				Extent ext = layer.getExtent();
-				GWT.log("WMS layer extent: "+ext);
-				if(ext!=null) {
-					ExtentWrapped ew = new ExtentWrapped(ext.getLowerLeftX(), ext.getLowerLeftY(), ext.getUpperRightX(), ext.getUpperRightY());
-					Coordinate center = ew.getCenter();
-					olsm.getMap().getView().setCenter(center);
-				}
+				olsm.addWMSLayer(mapServerHost, layerName);	
+				
+				Scheduler.get().scheduleDeferred(new ScheduledCommand() {
+
+					@Override
+					public void execute() {
+						Extent ext = olsm.getFirstLayer().getExtent();
+						GWT.log("WMS layer extent: "+ext);
+//						if(ext!=null) {
+//							ExtentWrapped ew = new ExtentWrapped(ext.getLowerLeftX(), ext.getLowerLeftY(), ext.getUpperRightX(), ext.getUpperRightY());
+//							Coordinate center = ew.getCenter();
+//							olsm.getMap().getView().setCenter(center);
+//						}
+					}
+					
+				});
+
 			}
 		});