Added Comparable for sorting the UCD names

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

@@ -1,5 +1,7 @@
 package org.gcube.portlets.user.geoportaldataviewer.client;
 
+import java.util.ArrayList;
+import java.util.Collections;
 import java.util.LinkedHashMap;
 import java.util.List;
 import java.util.Set;
@@ -231,10 +233,20 @@ public class GeoportalDataViewer implements EntryPoint {
 										"//cdnjs.cloudflare.com/ajax/libs/nanogallery2/3.0.5/jquery.nanogallery2.min.js")
 										.setWindow(ScriptInjector.TOP_WINDOW).inject();
 
+								if (result.getAvailableCollections() == null
+										|| result.getAvailableCollections().size() == 0) {
+									RootPanel.get(APP_DIV).remove(loaderApp);
+									Window.alert("No available collection in this context");
+									RootPanel.get(APP_DIV).add(getGeneralErrorPanel());
+									return;
+								}
+
 								GWT.log("Loading collections, count " + result.getAvailableCollections().size());
 
-								mainPanel.setAvailableCollections(result.getAvailableCollections().values(),
-										paramGeonaItemType);
+								ArrayList<GCubeCollection> listColl = new ArrayList<GCubeCollection>();
+								listColl.addAll(result.getAvailableCollections().values());
+								Collections.sort(listColl);
+								mainPanel.setAvailableCollections(listColl, paramGeonaItemType);
 
 								if (paramGeonaItemID != null) {
 									if (paramGeonaItemType == null) {

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

@@ -188,6 +188,14 @@ public class GeonaDataViewMainPanel extends Composite {
 		
 		navListSearch.getElement().getFirstChildElement().setAttribute("disabled", "disabled");
 		
+//		List<UseCaseDescriptorDV> listUCDs = new ArrayList<UseCaseDescriptorDV>();
+//		
+//		for (ItemFieldsResponse itemFieldsResponse : itemFieldsReponse) {
+//			listUCDs.add(itemFieldsResponse.getUseCaseDescriptorDV());
+//		}
+//		
+//		Collections.sort(listUCDs);
+
 		for (final ItemFieldsResponse itemFieldResp : itemFieldsReponse) {
 
 			UseCaseDescriptorDV ucd = itemFieldResp.getUseCaseDescriptorDV();

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

@@ -52,7 +52,7 @@
 				<b:DropdownButton type="LINK"
 					text="Open Collection" ui:field="openCollectionDropDown">
 					<g:HTMLPanel ui:field="openCollectionPanel"
-						addStyleNames="{style.open-collection-style}">
+						addStyleNames="open-collection-style">
 					</g:HTMLPanel>
 				</b:DropdownButton>
 				<b:DropdownButton type="LINK"

src/main/java/org/gcube/portlets/user/geoportaldataviewer/shared/GCubeCollection.java

@@ -1,14 +1,12 @@
 package org.gcube.portlets.user.geoportaldataviewer.shared;
 
-
 import java.io.Serializable;
 import java.util.List;
 
 import org.gcube.application.geoportalcommon.shared.geoportal.materialization.IndexLayerDV;
 import org.gcube.application.geoportalcommon.shared.geoportal.ucd.UseCaseDescriptorDV;
 
-
-public class GCubeCollection implements Serializable {
+public class GCubeCollection implements Serializable, Comparable<GCubeCollection> {
 
 	/**
 	 * 
@@ -29,7 +27,6 @@ public class GCubeCollection implements Serializable {
 		return indexes;
 	}
 
-    
 	public void setUcd(UseCaseDescriptorDV ucd) {
 		this.ucd = ucd;
 	}
@@ -43,5 +40,23 @@ public class GCubeCollection implements Serializable {
 		return "GCubeCollection [ucd=" + ucd + ", indexes=" + indexes + "]";
 	}
 
+	@Override
+	public int compareTo(GCubeCollection o) {
+
+		if (this == null || this.ucd == null)
+			return 1;
+
+		if (o == null || o.getUcd() == null)
+			return -1;
+
+		if (this.ucd.getName() == null)
+			return 1;
+
+		if (o.getUcd().getName() == null)
+			return -1;
+
+		return this.getUcd().getName().compareTo(o.getUcd().getName());
+
+	}
 
 }

src/main/webapp/GeoportalDataViewer.css

@@ -771,6 +771,19 @@ RESPONSIVE
 }
 
 /* OPEN COLLECTION UI */
+.open-collection-style {
+	padding-left: 10px;
+	padding-right: 10px;
+}
+
+.open-collection-style > div {
+	border: 1px solid #ccc !important;
+	border-radius: 5px;
+	padding: 10px;
+	margin-bottom: 10px;
+	margin-top: 5px;
+}
+
 .layer-style-panel {
 	margin-left: 25px;
 	font-size: 13px;