Workaround implemented see at

https://support.d4science.org/issues/19671#note-17

.classpath

@@ -1,12 +1,12 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <classpath>
-	<classpathentry kind="src" output="target/workspace-explorer-app-1.3.1-SNAPSHOT/WEB-INF/classes" path="src/main/java">
+	<classpathentry kind="src" output="target/workspace-explorer-app-1.3.1/WEB-INF/classes" path="src/main/java">
 		<attributes>
 			<attribute name="optional" value="true"/>
 			<attribute name="maven.pomderived" value="true"/>
 		</attributes>
 	</classpathentry>
-	<classpathentry excluding="**" kind="src" output="target/workspace-explorer-app-1.3.1-SNAPSHOT/WEB-INF/classes" path="src/main/resources">
+	<classpathentry excluding="**" kind="src" output="target/workspace-explorer-app-1.3.1/WEB-INF/classes" path="src/main/resources">
 		<attributes>
 			<attribute name="maven.pomderived" value="true"/>
 		</attributes>
@@ -35,5 +35,5 @@
 			<attribute name="maven.pomderived" value="true"/>
 		</attributes>
 	</classpathentry>
-	<classpathentry kind="output" path="target/workspace-explorer-app-1.3.1-SNAPSHOT/WEB-INF/classes"/>
+	<classpathentry kind="output" path="target/workspace-explorer-app-1.3.1/WEB-INF/classes"/>
 </classpath>

.settings/com.gwtplugins.gdt.eclipse.core.prefs

@@ -1,6 +1,6 @@
 eclipse.preferences.version=1
 jarsExcludedFromWebInfLib=
-lastWarOutDir=/home/francesco/git/workspace-explorer-app/target/workspace-explorer-app-1.3.1-SNAPSHOT
+lastWarOutDir=/home/francesco-mangiacrapa/git/workspace-explorer-app/target/workspace-explorer-app-1.3.1
 launchConfigExternalUrlPrefix=
 warSrcDir=src/main/webapp
 warSrcDirIsOutput=false

.settings/org.eclipse.wst.common.component

@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?><project-modules id="moduleCoreId" project-version="1.5.0">
-    <wb-module deploy-name="workspace-explorer-app-1.3.1-SNAPSHOT">
+    <wb-module deploy-name="workspace-explorer-app-1.3.1">
         <wb-resource deploy-path="/WEB-INF/classes" source-path="/src/main/java"/>
         <wb-resource deploy-path="/WEB-INF/classes" source-path="/src/main/resources"/>
         <wb-resource deploy-path="/" source-path="/target/m2e-wtp/web-resources"/>

pom.xml

@@ -12,7 +12,7 @@
 
 	<groupId>org.gcube.portlets.user</groupId>
 	<artifactId>workspace-explorer-app</artifactId>
-	<version>1.3.1</version>
+	<version>1.3.1-SNAPSHOT</version>
 	<packaging>war</packaging>
 
 	<description>
@@ -118,7 +118,7 @@
 		<dependency>
 			<groupId>org.gcube.common</groupId>
 			<artifactId>storagehub-client-wrapper</artifactId>
-			<version>[1.0.0, 2.0.0-SNAPSHOT)</version>
+			<version>[1.0.0-SNAPSHOT, 2.0.0-SNAPSHOT)</version>
 			<scope>compile</scope>
 		</dependency>
 

src/main/java/org/gcube/portlets/user/workspaceexplorerapp/client/WorkspaceExplorerAppMainPanel.java

@@ -8,6 +8,7 @@ import java.util.List;
 
 import org.gcube.portlets.user.workspaceexplorerapp.client.download.DownloadType;
 import org.gcube.portlets.user.workspaceexplorerapp.client.event.DownloadItemEvent;
+import org.gcube.portlets.user.workspaceexplorerapp.client.event.LoadFolderEvent;
 import org.gcube.portlets.user.workspaceexplorerapp.client.grid.DisplayField;
 
 import com.google.gwt.core.client.GWT;
@@ -64,6 +65,9 @@ public class WorkspaceExplorerAppMainPanel extends Composite {
 	@UiField
 	MaterialNavSection we_nav_right;
 
+	@UiField
+	MaterialLink home_we;
+	
 	@UiField
 	MaterialLink download_we;
 
@@ -116,6 +120,18 @@ public class WorkspaceExplorerAppMainPanel extends Composite {
 		});
 
 		we_nav_right.add(order);
+		
+		home_we.addClickHandler(new ClickHandler() {
+
+			/* (non-Javadoc)
+			 * @see com.google.gwt.event.dom.client.ClickHandler#onClick(com.google.gwt.event.dom.client.ClickEvent)
+			 */
+			@Override
+			public void onClick(ClickEvent event) {
+				WorkspaceExplorerAppMainPanel.this.handlerManager.fireEvent(new LoadFolderEvent(null));
+			}
+		});
+		
 		download_we.addClickHandler(new ClickHandler() {
 
 			/* (non-Javadoc)

src/main/java/org/gcube/portlets/user/workspaceexplorerapp/client/WorkspaceExplorerAppMainPanel.ui.xml

@@ -63,6 +63,8 @@
 			<g:Image styleName="{style.navigation_explorer}" url="img/d4science_workspace_logo_180.png"
 				ui:field="d4science_workspace_logo_180" title="D4Science Workspace Folder Explorer"
 				altText="D4Science Workspace Folder Explorer" />
+			<m:MaterialLink iconType="HOME" iconPosition="LEFT"
+				textColor="blue" text="Home" ui:field="home_we" />
 			<m:MaterialLink iconType="OPEN_IN_NEW" iconPosition="LEFT"
 				textColor="blue" text="Open" ui:field="show_we" />
 			<m:MaterialLink iconType="INBOX" iconPosition="LEFT"

src/main/java/org/gcube/portlets/user/workspaceexplorerapp/client/WorkspaceResourcesExplorerPanel.java

@@ -62,8 +62,8 @@ public class WorkspaceResourcesExplorerPanel extends DockPanel implements HasWor
 	private WorkspaceExplorer wsExplorer;
 	private ScrollPanel centerScrollable = new ScrollPanel();
 //	private ScrollPanel southPanel = new ScrollPanel();
-	private String folderId;
 	private String folderName;
+	private Item baseFolder;
 	public static final DisplayField[] displayFields = new DisplayField[]{DisplayField.ICON, DisplayField.NAME, DisplayField.OWNER, DisplayField.CREATION_DATE};
 
 	/**
@@ -89,7 +89,6 @@ public class WorkspaceResourcesExplorerPanel extends DockPanel implements HasWor
 	 * @throws Exception the exception
 	 */
 	private void initExplorer(HandlerManager eventBus, String folderId, String folderName, ItemType[] selectableTypes, ItemType[] showableTypes) throws Exception{
-		this.folderId = folderId;
 		this.folderName = folderName;
 		this.eventBus = eventBus;
 		this.breadcrumbs = new Breadcrumbs(eventBus);
@@ -97,6 +96,8 @@ public class WorkspaceResourcesExplorerPanel extends DockPanel implements HasWor
 
 		wsExplorer = new WorkspaceExplorer(eventBus, showableTypes, selectableTypes, displayFields);
 		Item item = new Item(folderId, folderName, true);
+		this.baseFolder = item;
+		wsExplorer.setBaseFolder(item);
 		if(folderId!=null && !folderId.isEmpty())
 			wsExplorer.loadFolder(item);
 		initPanel("");
@@ -152,10 +153,8 @@ public class WorkspaceResourcesExplorerPanel extends DockPanel implements HasWor
 				
 				GWT.log("LoadFolderEvent fired");
 
-				if(loadFolderEvent.getTargetFolder()==null)
+				Item item = loadFolderEvent.getTargetFolder()==null?baseFolder:loadFolderEvent.getTargetFolder();
-					return;
 
-				Item item = loadFolderEvent.getTargetFolder();
 				if(item.isFolder()){
 					try {
 						wsExplorer.loadFolder(item);
@@ -199,20 +198,6 @@ public class WorkspaceResourcesExplorerPanel extends DockPanel implements HasWor
 
 					PopupContextMenu popupCM = new PopupContextMenu(true, eventBus, rightClickItemEvent.getItem());
 					popupCM.showPopup(rightClickItemEvent.getXPos(), Window.getScrollTop()+rightClickItemEvent.getYPos());
-
-		    		/*final PopupPanel contextMenu = new PopupPanel(true);
-		    		contextMenu.getElement().getStyle().setBackgroundColor("#F5F5F5");
-		    		Navigation nav = new Navigation(eventBus, rightClickItemEvent.getItem());
-		    		nav.addCommandOnDownloadClick(new Command() {
-
-						@Override
-						public void execute() {
-							contextMenu.hide();
-						}
-					});
-		    		contextMenu.add(nav);
-		    		contextMenu.setPopupPosition(rightClickItemEvent.getXPos(), Window.getScrollTop()+rightClickItemEvent.getYPos());
-		    		contextMenu.show();*/
 				}
 			}
 		});
@@ -259,26 +244,6 @@ public class WorkspaceResourcesExplorerPanel extends DockPanel implements HasWor
 					default:
 						break;
 					}
-
-
-					/*final NewBrowserWindow newBW = NewBrowserWindow.open("", "_self", "");
-					WorkspaceExplorerAppConstants.workspaceNavigatorService.getPublicLinkForItemId(itemId, new AsyncCallback<String>() {
-
-						@Override
-						public void onFailure(Throwable caught) {
-							Window.alert(caught.getMessage());
-						}
-
-						@Override
-						public void onSuccess(String url) {
-
-							if(url!=null){
-								newBW.setUrl(url);
-							}else
-								Window.alert("Sorry, the item selected is not available for download");
-
-						}
-					});*/
 				}
 			}
 		});
@@ -311,12 +276,17 @@ public class WorkspaceResourcesExplorerPanel extends DockPanel implements HasWor
 
 		GWT.log("Reload Parent Breadcrumb: [Item id: "+itemIdentifier+"]");
 
-		WorkspaceExplorerAppConstants.workspaceNavigatorService.getBreadcrumbsByItemIdentifierToParentLimit(itemIdentifier, folderId, includeItemAsParent,  new AsyncCallback<List<Item>>() {
+		WorkspaceExplorerAppConstants.workspaceNavigatorService.getBreadcrumbsByItemIdentifierToParentLimit(itemIdentifier, baseFolder.getId(), includeItemAsParent,  new AsyncCallback<List<Item>>() {
 
 			@Override
 			public void onFailure(Throwable caught) {
 				GWT.log(caught.getMessage());
-				wsExplorer.setAlert(caught.getMessage(), AlertType.ERROR);
+				Item goToBaseFolder = null;
+				//I'm adding go to folder only if is a sub-folder of baseFolder
+				if(itemIdentifier!=baseFolder.getId())
+					goToBaseFolder = baseFolder;
+				
+				//wsExplorer.setAlert(caught.getMessage(), AlertType.ERROR, goToBaseFolder);
 			}
 
 			@Override
@@ -329,21 +299,14 @@ public class WorkspaceResourcesExplorerPanel extends DockPanel implements HasWor
 		});
 	}
 
-
 	/**
 	 * Refresh root folder view.
 	 */
 	public void refreshRootFolderView(){
-		Item item = new Item(folderId, folderName, true);
+		//Item item = new Item(baseFolder.getId(), folderName, true);
-		eventBus.fireEvent(new LoadFolderEvent(item));
+		eventBus.fireEvent(new LoadFolderEvent(baseFolder));
 	}
-
+	
-//	/**
-//	 * Clear more info.
-//	 */
-//	private void clearMoreInfo(){
-//		southPanel.clear();
-//	}
 
 	/**
 	 * Inits the panel.

src/main/java/org/gcube/portlets/user/workspaceexplorerapp/client/view/WorkspaceExplorer.java

@@ -1,5 +1,4 @@
 package org.gcube.portlets.user.workspaceexplorerapp.client.view;
-
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.List;
@@ -8,6 +7,7 @@ import java.util.Set;
 import org.gcube.portlets.user.workspaceexplorerapp.client.Util;
 import org.gcube.portlets.user.workspaceexplorerapp.client.WorkspaceExplorerApp;
 import org.gcube.portlets.user.workspaceexplorerapp.client.WorkspaceExplorerAppConstants;
+import org.gcube.portlets.user.workspaceexplorerapp.client.event.LoadFolderEvent;
 import org.gcube.portlets.user.workspaceexplorerapp.client.event.RootLoadedEvent;
 import org.gcube.portlets.user.workspaceexplorerapp.client.grid.DisplayField;
 import org.gcube.portlets.user.workspaceexplorerapp.client.grid.ItemsTable;
@@ -17,11 +17,14 @@ import org.gcube.portlets.user.workspaceexplorerapp.shared.Item;
 import org.gcube.portlets.user.workspaceexplorerapp.shared.ItemType;
 
 import com.github.gwtbootstrap.client.ui.Alert;
+import com.github.gwtbootstrap.client.ui.Button;
 import com.github.gwtbootstrap.client.ui.constants.AlertType;
+import com.github.gwtbootstrap.client.ui.constants.ButtonType;
 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.shared.HandlerManager;
-import com.google.gwt.user.client.Window;
 import com.google.gwt.user.client.rpc.AsyncCallback;
 import com.google.gwt.user.client.ui.HTML;
 import com.google.gwt.user.client.ui.HorizontalPanel;
@@ -60,6 +63,7 @@ public class WorkspaceExplorer implements ShowableTypes, SelectableTypes{
 	private ItemsTable itTables;
 	private DisplayField[] displayFields;
 	private HandlerManager eventBus;
+	private Item baseFolder;
 
 
 	/**
@@ -100,11 +104,25 @@ public class WorkspaceExplorer implements ShowableTypes, SelectableTypes{
 	 *
 	 * @param html the html
 	 * @param type the type
+	 * @param goToFolder the go to folder
 	 */
-	public void setAlert(String html, AlertType type){
+	public void setAlert(String html, AlertType type, final Item goToFolder){
 		explorerPanel.clear();
 		alert.setHTML(html);
 		alert.setType(type);
+		
+		if(goToFolder!=null) {
+			Button buttGoToHome = new Button("Go to Home");
+			buttGoToHome.setType(ButtonType.LINK);
+			buttGoToHome.addClickHandler(new ClickHandler() {
+				
+				@Override
+				public void onClick(ClickEvent event) {
+					eventBus.fireEvent(new LoadFolderEvent(goToFolder));
+				}
+			});
+			alert.add(buttGoToHome);
+		}
 		alert.setClose(false);
 		explorerPanel.add(alert);
 	}
@@ -140,9 +158,9 @@ public class WorkspaceExplorer implements ShowableTypes, SelectableTypes{
 		WorkspaceExplorerAppConstants.workspaceNavigatorService.getRoot(showableTypesParam, purgeEmpyFolders, filterCriteria, new AsyncCallback<Item>() {
 
 			public void onFailure(Throwable caught) {
-				Window.alert(caught.getMessage());
+				//Window.alert(caught.getMessage());
-				setAlert(caught.getMessage(), AlertType.ERROR);
 				GWT.log("Error loading workspace tree from server",caught);
+				setAlert(caught.getMessage(), AlertType.ERROR, null);
 			}
 
 			public void onSuccess(Item item) {
@@ -186,9 +204,9 @@ public class WorkspaceExplorer implements ShowableTypes, SelectableTypes{
 
 			@Override
 			public void onFailure(Throwable caught) {
-				Window.alert(caught.getMessage());
+				//Window.alert(caught.getMessage());
-				setAlert(caught.getMessage(), AlertType.ERROR);
 				GWT.log("Error loading workspace folder from server",caught);
+				setAlert(caught.getMessage(), AlertType.ERROR, null);
 			}
 
 			@Override
@@ -226,9 +244,10 @@ public class WorkspaceExplorer implements ShowableTypes, SelectableTypes{
 
 				@Override
 				public void onFailure(Throwable caught) {
-					Window.alert(caught.getMessage());
+					//Window.alert(caught.getMessage());
-					setAlert(caught.getMessage(), AlertType.ERROR);
 					GWT.log("Error loading workspace folder from server",caught);
+					setAlert(caught.getMessage(), AlertType.ERROR, null);
+					
 				}
 
 				@Override
@@ -267,7 +286,18 @@ public class WorkspaceExplorer implements ShowableTypes, SelectableTypes{
 //		explorerPanel.add(itTables.getCellTable());
 		GWT.log("added item: "+item.getName() +", to Explorer");
 	}
+	
+	
+	/**
+	 * Sets the base folder.
+	 *
+	 * @param item the new base folder
+	 */
+	public void setBaseFolder(Item baseFolder) {
+		this.baseFolder = baseFolder;
+	}
 
+	
 	/**
 	 * Gets the panel.
 	 *
@@ -358,4 +388,5 @@ public class WorkspaceExplorer implements ShowableTypes, SelectableTypes{
 		this.showableTypes.clear();
 		if (showableTypes!=null) for (ItemType type:showableTypes) this.showableTypes.add(type);
 	}
+
 }

src/main/java/org/gcube/portlets/user/workspaceexplorerapp/server/WorkspaceExplorerAppServiceImpl.java

@@ -145,6 +145,13 @@ public class WorkspaceExplorerAppServiceImpl extends RemoteServiceServlet implem
 			
 		} catch (Exception e) {
 			logger.error("Error during item retrieving", e);
+			
+			if(e.getMessage()!=null && e.getMessage().startsWith("Insufficent Privileges")) {
+				String erroMsg = item.getName()!=null?"The folder '"+item.getName()+"'":"This folder";
+				erroMsg+= " is not accessible as an anonymous user!";
+				throw new WorkspaceNavigatorServiceException(erroMsg);
+			}
+			
 			throw new WorkspaceNavigatorServiceException("Sorry, an error occurred when performing get folder. Does it still exist?");
 		}
 			
@@ -358,7 +365,7 @@ public class WorkspaceExplorerAppServiceImpl extends RemoteServiceServlet implem
 			
 		} catch (Exception e) {
 			logger.error("Error in get List Parents By Item Identifier ", e);
-			throw new Exception("Sorry, an error occurred during path retrieving!");
+			throw new Exception("Sorry, I'm not able to load the location of the folder. Does it still exist?");
 		}
 	}
 

src/test/.gitignore

@@ -0,0 +1 @@
+/resources/