Implemeted empty trash with the new API call
[pithos-web-client] / src / gr / grnet / pithos / web / client / Pithos.java
index bdfea0b..a2f89a8 100644 (file)
@@ -1,5 +1,5 @@
 /*
- * Copyright 2011 GRNET S.A. All rights reserved.
+ * Copyright 2011-2012 GRNET S.A. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or
  * without modification, are permitted provided that the following
@@ -53,35 +53,35 @@ import gr.grnet.pithos.web.client.rest.GetRequest;
 import gr.grnet.pithos.web.client.rest.HeadRequest;
 import gr.grnet.pithos.web.client.rest.PutRequest;
 import gr.grnet.pithos.web.client.rest.RestException;
-import gr.grnet.pithos.web.client.tagtree.Tag;
-import gr.grnet.pithos.web.client.tagtree.TagTreeView;
-import gr.grnet.pithos.web.client.tagtree.TagTreeViewModel;
 
 import java.util.ArrayList;
+import java.util.Date;
 import java.util.HashMap;
 import java.util.Iterator;
 import java.util.List;
 import java.util.Set;
 
+import org.apache.http.HttpStatus;
+
 import com.google.gwt.core.client.EntryPoint;
 import com.google.gwt.core.client.GWT;
+import com.google.gwt.core.client.JsArrayString;
 import com.google.gwt.core.client.Scheduler;
+import com.google.gwt.core.client.Scheduler.RepeatingCommand;
 import com.google.gwt.core.client.Scheduler.ScheduledCommand;
 import com.google.gwt.event.dom.client.ClickEvent;
 import com.google.gwt.event.dom.client.ClickHandler;
 import com.google.gwt.event.logical.shared.ResizeEvent;
 import com.google.gwt.event.logical.shared.ResizeHandler;
-import com.google.gwt.http.client.Request;
-import com.google.gwt.http.client.RequestBuilder;
-import com.google.gwt.http.client.RequestCallback;
-import com.google.gwt.http.client.RequestException;
 import com.google.gwt.http.client.Response;
-import com.google.gwt.json.client.JSONArray;
-import com.google.gwt.json.client.JSONObject;
-import com.google.gwt.json.client.JSONParser;
-import com.google.gwt.json.client.JSONString;
-import com.google.gwt.json.client.JSONValue;
+import com.google.gwt.http.client.URL;
+import com.google.gwt.i18n.client.DateTimeFormat;
+import com.google.gwt.i18n.client.Dictionary;
+import com.google.gwt.i18n.client.TimeZone;
+import com.google.gwt.resources.client.ClientBundle;
+import com.google.gwt.resources.client.CssResource;
 import com.google.gwt.resources.client.ImageResource;
+import com.google.gwt.resources.client.ImageResource.ImageOptions;
 import com.google.gwt.user.client.Command;
 import com.google.gwt.user.client.Cookies;
 import com.google.gwt.user.client.Event;
@@ -89,12 +89,14 @@ import com.google.gwt.user.client.History;
 import com.google.gwt.user.client.Window;
 import com.google.gwt.user.client.ui.AbstractImagePrototype;
 import com.google.gwt.user.client.ui.Button;
+import com.google.gwt.user.client.ui.Composite;
+import com.google.gwt.user.client.ui.FlowPanel;
 import com.google.gwt.user.client.ui.HTML;
 import com.google.gwt.user.client.ui.HasHorizontalAlignment;
 import com.google.gwt.user.client.ui.HasVerticalAlignment;
 import com.google.gwt.user.client.ui.HorizontalPanel;
 import com.google.gwt.user.client.ui.HorizontalSplitPanel;
-import com.google.gwt.user.client.ui.Image;
+import com.google.gwt.user.client.ui.PopupPanel;
 import com.google.gwt.user.client.ui.RootPanel;
 import com.google.gwt.user.client.ui.VerticalPanel;
 import com.google.gwt.view.client.SelectionChangeEvent;
@@ -109,6 +111,37 @@ public class Pithos implements EntryPoint, ResizeHandler {
        public static final String HOME_CONTAINER = "pithos";
 
        public static final String TRASH_CONTAINER = "trash";
+
+       public static final Configuration config = GWT.create(Configuration.class);
+       
+       public interface Style extends CssResource {
+               String commandAnchor();
+               
+               String statistics();
+               
+               @ClassName("gwt-HTML")
+               String html();
+               
+               String uploadAlert();
+
+               String uploadAlertLink();
+
+               String uploadAlertProgress();
+               
+               String uploadAlertPercent();
+               
+               String uploadAlertClose();
+       }
+       
+       public interface Resources extends ClientBundle {
+               @Source("Pithos.css")
+               Style pithosCss();
+               
+               @Source("gr/grnet/pithos/resources/close-popup.png")
+               ImageResource closePopup();
+       }
+
+       public static Resources resources = GWT.create(Resources.class);
        
        /**
         * Instantiate an application-level image bundle. This object will provide
@@ -128,38 +161,28 @@ public class Pithos implements EntryPoint, ResizeHandler {
         return account;
     }
 
-    public void updateFolder(Folder f, boolean showfiles, Command callback) {
-        folderTreeView.updateFolder(f, showfiles, callback);
+    public void updateFolder(Folder f, boolean showfiles, Command callback, final boolean openParent) {
+        folderTreeView.updateFolder(f, showfiles, callback, openParent);
     }
 
     public void updateGroupNode(Group group) {
         groupTreeView.updateGroupNode(group);
     }
 
-    public void updateSharedFolder(Folder f, boolean showfiles) {
-       mysharedTreeView.updateFolder(f, showfiles);
+    public void updateMySharedRoot() {
+       mysharedTreeView.updateRoot();
     }
     
-    public void updateOtherSharedFolder(Folder f, boolean showfiles) {
-       otherSharedTreeView.updateFolder(f, showfiles);
+    public void updateSharedFolder(Folder f, boolean showfiles, Command callback) {
+       mysharedTreeView.updateFolder(f, showfiles, callback);
     }
-
-    public void updateTag(Tag t) {
-        tagTreeView.updateTag(t);
-    }
-
-    public void updateTags() {
-        tagTreeViewModel.initialize(getAllTags());
+    
+    public void updateSharedFolder(Folder f, boolean showfiles) {
+       updateSharedFolder(f, showfiles, null);
     }
 
-    public List<Tag> getAllTags() {
-        List<Tag> tagList = new ArrayList<Tag>();
-        for (Folder f : account.getContainers()) {
-            for (String t : f.getTags()) {
-                tagList.add(new Tag(t));
-            }
-        }
-        return tagList;
+    public void updateOtherSharedFolder(Folder f, boolean showfiles, Command callback) {
+       otherSharedTreeView.updateFolder(f, showfiles, callback);
     }
 
     public MysharedTreeView getMySharedTreeView() {
@@ -175,13 +198,13 @@ public class Pithos implements EntryPoint, ResizeHandler {
                @Source("gr/grnet/pithos/resources/document.png")
                ImageResource folders();
 
-               @Source("gr/grnet/pithos/resources/edit_group_22.png")
-               ImageResource groups();
-
                @Source("gr/grnet/pithos/resources/advancedsettings.png")
+               @ImageOptions(width=32, height=32)
                ImageResource tools();
        }
 
+       private Throwable error;
+       
        /**
         * The Application Clipboard implementation;
         */
@@ -195,12 +218,12 @@ public class Pithos implements EntryPoint, ResizeHandler {
        /**
         * The panel that contains the various system messages.
         */
-       private MessagePanel messagePanel = new MessagePanel(Pithos.images);
+       private MessagePanel messagePanel = new MessagePanel(this, Pithos.images);
 
        /**
         * The bottom panel that contains the status bar.
         */
-       private StatusPanel statusPanel = null;
+       StatusPanel statusPanel = null;
 
        /**
         * The file list widget.
@@ -233,46 +256,43 @@ public class Pithos implements EntryPoint, ResizeHandler {
      */
     private String token;
 
+    VerticalPanel trees;
+    
     SingleSelectionModel<Folder> folderTreeSelectionModel;
     FolderTreeViewModel folderTreeViewModel;
     FolderTreeView folderTreeView;
 
     SingleSelectionModel<Folder> mysharedTreeSelectionModel;
-    private MysharedTreeViewModel mysharedTreeViewModel;
-    MysharedTreeView mysharedTreeView;
+    MysharedTreeViewModel mysharedTreeViewModel;
+    MysharedTreeView mysharedTreeView = null;;
 
     protected SingleSelectionModel<Folder> otherSharedTreeSelectionModel;
-    private OtherSharedTreeViewModel otherSharedTreeViewModel;
-    OtherSharedTreeView otherSharedTreeView;
-
-    protected SingleSelectionModel<Tag> tagTreeSelectionModel;
-    private TagTreeViewModel tagTreeViewModel;
-    private TagTreeView tagTreeView;
+    OtherSharedTreeViewModel otherSharedTreeViewModel;
+    OtherSharedTreeView otherSharedTreeView = null;
 
     GroupTreeViewModel groupTreeViewModel;
-    private GroupTreeView groupTreeView;
+    GroupTreeView groupTreeView;
 
-    private TreeView selectedTree;
+    TreeView selectedTree;
     protected AccountResource account;
     
     Folder trash;
-
-    @SuppressWarnings("rawtypes")
-       private List<SingleSelectionModel> selectionModels = new ArrayList<SingleSelectionModel>();
-    
-    Button upload;
     
-    private HTML totalFiles;
-    
-    private HTML usedBytes;
-    
-    private HTML totalBytes;
+    List<Composite> treeViews = new ArrayList<Composite>();
+
+    @SuppressWarnings("rawtypes") List<SingleSelectionModel> selectionModels = new ArrayList<SingleSelectionModel>();
     
-    private HTML usedPercent;
+    public Button upload;
     
     private HTML numOfFiles;
     
-    private Button toolsButton;
+    private Toolbar toolbar;
+    
+    private FileUploadDialog fileUploadDialog = new FileUploadDialog(this);
+
+       UploadAlert uploadAlert;
+       
+       Date lastModified;
 
        @Override
        public void onModuleLoad() {
@@ -281,154 +301,127 @@ public class Pithos implements EntryPoint, ResizeHandler {
        }
 
     private void initialize() {
-        VerticalPanel outer = new VerticalPanel();
-        outer.setWidth("100%");
+       lastModified = new Date(); //Initialize if-modified-since value with now.
+       resources.pithosCss().ensureInjected();
+       boolean bareContent = Window.Location.getParameter("noframe") != null;
+       String contentWidth = bareContent ? "100%" : "75%";
 
-        topPanel = new TopPanel(this, Pithos.images);
-        topPanel.setWidth("100%");
-        outer.add(topPanel);
+       VerticalPanel outer = new VerticalPanel();
+        outer.setWidth("100%");
+       if (!bareContent) {
+               outer.addStyleName("pithos-outer");
+       }
 
-        messagePanel.setWidth("100%");
+        if (!bareContent) {
+               topPanel = new TopPanel(this, Pithos.images);
+               topPanel.setWidth("100%");
+               outer.add(topPanel);
+               outer.setCellHorizontalAlignment(topPanel, HasHorizontalAlignment.ALIGN_CENTER);
+        }
+        
         messagePanel.setVisible(false);
         outer.add(messagePanel);
         outer.setCellHorizontalAlignment(messagePanel, HasHorizontalAlignment.ALIGN_CENTER);
-
-
-        // Inner contains the various lists.
-        inner.sinkEvents(Event.ONCONTEXTMENU);
-        inner.setWidth("100%");
-
-        HorizontalPanel rightside = new HorizontalPanel();
-        rightside.addStyleName("pithos-rightSide");
-        rightside.setSpacing(5);
-
-        toolsButton = new Button(AbstractImagePrototype.create(images.tools()).getHTML());
-        toolsButton.addClickHandler(new ClickHandler() {
-                       
-                       @Override
-                       public void onClick(ClickEvent event) {
-                ToolsMenu menu = new ToolsMenu(Pithos.this, images, getSelectedTree(), getSelectedTree().getSelection(), getFileList().getSelectedFiles());
-                if (!menu.isEmpty()) {
-                           menu.setPopupPosition(event.getClientX(), event.getClientY());
-                           menu.show();
-                }
-                       }
-               });
-        rightside.add(toolsButton);
-        rightside.setCellHorizontalAlignment(toolsButton, HasHorizontalAlignment.ALIGN_LEFT);
+        outer.setCellVerticalAlignment(messagePanel, HasVerticalAlignment.ALIGN_MIDDLE);
+
+        HorizontalPanel header = new HorizontalPanel();
+        header.addStyleName("pithos-header");
+        header.setWidth(contentWidth);
+        if (bareContent)
+               header.addStyleName("pithos-header-noframe");
+        upload = new Button("Upload", new ClickHandler() {
+            @Override
+            public void onClick(ClickEvent event) {
+               if (getSelection() != null)
+                       new UploadFileCommand(Pithos.this, null, getSelection()).execute();
+            }
+        });
+        upload.addStyleName("pithos-uploadButton");
+        header.add(upload);
+        header.setCellHorizontalAlignment(upload, HasHorizontalAlignment.ALIGN_LEFT);
+        header.setCellVerticalAlignment(upload, HasVerticalAlignment.ALIGN_MIDDLE);
+
+        toolbar = new Toolbar(this);
+        header.add(toolbar);
+        header.setCellHorizontalAlignment(toolbar, HasHorizontalAlignment.ALIGN_CENTER);
+        header.setCellVerticalAlignment(toolbar, HasVerticalAlignment.ALIGN_MIDDLE);
         
         HorizontalPanel folderStatistics = new HorizontalPanel();
         folderStatistics.addStyleName("pithos-folderStatistics");
         numOfFiles = new HTML();
         folderStatistics.add(numOfFiles);
+        folderStatistics.setCellVerticalAlignment(numOfFiles, HasVerticalAlignment.ALIGN_MIDDLE);
         HTML numOfFilesLabel = new HTML("&nbsp;Files");
         folderStatistics.add(numOfFilesLabel);
-        rightside.add(folderStatistics);
-        rightside.setCellHorizontalAlignment(folderStatistics, HasHorizontalAlignment.ALIGN_RIGHT);
-
-        inner.add(rightside);
-        inner.setCellVerticalAlignment(rightside, HasVerticalAlignment.ALIGN_MIDDLE);
-        inner.setCellHeight(rightside, "60px");
+        folderStatistics.setCellVerticalAlignment(numOfFilesLabel, HasVerticalAlignment.ALIGN_MIDDLE);
+        header.add(folderStatistics);
+        header.setCellHorizontalAlignment(folderStatistics, HasHorizontalAlignment.ALIGN_RIGHT);
+        header.setCellVerticalAlignment(folderStatistics, HasVerticalAlignment.ALIGN_MIDDLE);
+        header.setCellWidth(folderStatistics, "40px");
+        outer.add(header);
+        outer.setCellHorizontalAlignment(header, HasHorizontalAlignment.ALIGN_CENTER);
+        // Inner contains the various lists
+        inner.sinkEvents(Event.ONCONTEXTMENU);
+        inner.setWidth("100%");
 
         folderTreeSelectionModel = new SingleSelectionModel<Folder>();
         folderTreeSelectionModel.addSelectionChangeHandler(new SelectionChangeEvent.Handler() {
             @Override
-            public void onSelectionChange(@SuppressWarnings("unused") SelectionChangeEvent event) {
+            public void onSelectionChange(SelectionChangeEvent event) {
                 if (folderTreeSelectionModel.getSelectedObject() != null) {
                     deselectOthers(folderTreeView, folderTreeSelectionModel);
                     applyPermissions(folderTreeSelectionModel.getSelectedObject());
                     Folder f = folderTreeSelectionModel.getSelectedObject();
-                    updateFolder(f, true, null);
+                       updateFolder(f, true, new Command() {
+                               
+                               @Override
+                               public void execute() {
+                                       updateStatistics();
+                               }
+                       }, true);
+                       showRelevantToolbarButtons();
                 }
+                               else {
+                                       if (getSelectedTree().equals(folderTreeView))
+                                               setSelectedTree(null);
+                                       if (getSelectedTree() == null)
+                                               showRelevantToolbarButtons();
+                               }
             }
         });
         selectionModels.add(folderTreeSelectionModel);
 
         folderTreeViewModel = new FolderTreeViewModel(this, folderTreeSelectionModel);
         folderTreeView = new FolderTreeView(folderTreeViewModel);
-
-        fileList = new FileList(this, images, folderTreeView);
+        treeViews.add(folderTreeView);
+        
+        fileList = new FileList(this, images);
         inner.add(fileList);
 
-        mysharedTreeSelectionModel = new SingleSelectionModel<Folder>();
-        mysharedTreeSelectionModel.addSelectionChangeHandler(new Handler() {
-            @Override
-            public void onSelectionChange(@SuppressWarnings("unused") SelectionChangeEvent event) {
-                if (mysharedTreeSelectionModel.getSelectedObject() != null) {
-                    deselectOthers(mysharedTreeView, mysharedTreeSelectionModel);
-                    upload.setEnabled(false);
-                    updateSharedFolder(mysharedTreeSelectionModel.getSelectedObject(), true);
-                }
-            }
-        });
-        selectionModels.add(mysharedTreeSelectionModel);
-        mysharedTreeViewModel = new MysharedTreeViewModel(this, mysharedTreeSelectionModel);
-        mysharedTreeView = new MysharedTreeView(mysharedTreeViewModel);
-
-        otherSharedTreeSelectionModel = new SingleSelectionModel<Folder>();
-        otherSharedTreeSelectionModel.addSelectionChangeHandler(new Handler() {
-            @Override
-            public void onSelectionChange(@SuppressWarnings("unused") SelectionChangeEvent event) {
-                if (otherSharedTreeSelectionModel.getSelectedObject() != null) {
-                    deselectOthers(otherSharedTreeView, otherSharedTreeSelectionModel);
-                    applyPermissions(otherSharedTreeSelectionModel.getSelectedObject());
-                    updateOtherSharedFolder(otherSharedTreeSelectionModel.getSelectedObject(), true);
-                }
-            }
-        });
-        selectionModels.add(otherSharedTreeSelectionModel);
-        otherSharedTreeViewModel = new OtherSharedTreeViewModel(this, otherSharedTreeSelectionModel);
-        otherSharedTreeView = new OtherSharedTreeView(otherSharedTreeViewModel);
-
-        groupTreeViewModel = new GroupTreeViewModel(this);
-        groupTreeView = new GroupTreeView(groupTreeViewModel);
-
-        VerticalPanel trees = new VerticalPanel();
-
-        upload = new Button("Upload File", new ClickHandler() {
-            @Override
-            public void onClick(@SuppressWarnings("unused") ClickEvent event) {
-                new UploadFileCommand(Pithos.this, null, getSelection()).execute();
-            }
-        });
-        upload.addStyleName("pithos-uploadButton");
-        trees.add(upload);
+        trees = new VerticalPanel();
+        trees.setWidth("100%");
         
-        HorizontalPanel treeHeader = new HorizontalPanel();
-        treeHeader.addStyleName("pithos-treeHeader");
-        HorizontalPanel statistics = new HorizontalPanel();
-        statistics.add(new HTML("Total Objects:&nbsp;"));
-        totalFiles = new HTML();
-        statistics.add(totalFiles);
-        statistics.add(new HTML("&nbsp;|&nbsp;Used:&nbsp;"));
-        usedBytes = new HTML();
-        statistics.add(usedBytes);
-        statistics.add(new HTML("&nbsp;of&nbsp;"));
-        totalBytes = new HTML();
-        statistics.add(totalBytes);
-        statistics.add(new HTML("&nbsp;("));
-        usedPercent = new HTML();
-        statistics.add(usedPercent);
-        statistics.add(new HTML("%)"));
-        treeHeader.add(statistics);
-        trees.add(treeHeader);
-
-        trees.add(folderTreeView);
-        trees.add(mysharedTreeView);
-        trees.add(otherSharedTreeView);
-//        trees.add(tagTreeView);
-        trees.add(groupTreeView);
         // Add the left and right panels to the split panel.
         splitPanel.setLeftWidget(trees);
-        splitPanel.setRightWidget(inner);
-        splitPanel.setSplitPosition("25%");
+        FlowPanel right = new FlowPanel();
+        right.getElement().setId("rightPanel");
+        right.add(inner);
+        splitPanel.setRightWidget(right);
+        splitPanel.setSplitPosition("219px");
         splitPanel.setSize("100%", "100%");
         splitPanel.addStyleName("pithos-splitPanel");
+        splitPanel.setWidth(contentWidth);
         outer.add(splitPanel);
+        outer.setCellHorizontalAlignment(splitPanel, HasHorizontalAlignment.ALIGN_CENTER);
 
-        statusPanel = new StatusPanel();
-        outer.add(statusPanel);
-
+        if (!bareContent) {
+               statusPanel = new StatusPanel();
+               statusPanel.setWidth("100%");
+               outer.add(statusPanel);
+               outer.setCellHorizontalAlignment(statusPanel, HasHorizontalAlignment.ALIGN_CENTER);
+        }
+        else
+               splitPanel.addStyleName("pithos-splitPanel-noframe");
 
         // Hook the window resize event, so that we can adjust the UI.
         Window.addResizeHandler(this);
@@ -441,14 +434,17 @@ public class Pithos implements EntryPoint, ResizeHandler {
         // Call the window resized handler to get the initial sizes setup. Doing
         // this in a deferred command causes it to occur after all widgets'
         // sizes have been computed by the browser.
-        Scheduler.get().scheduleDeferred(new ScheduledCommand() {
-
-            @Override
-            public void execute() {
+        Scheduler.get().scheduleIncremental(new RepeatingCommand() {
+                       
+                       @Override
+                       public boolean execute() {
+                               if (!isCloudbarReady())
+                                       return true;
                 onWindowResized(Window.getClientHeight());
-            }
-        });
-
+                               return false;
+                       }
+               });
+        
         Scheduler.get().scheduleDeferred(new ScheduledCommand() {
             @Override
             public void execute() {
@@ -466,102 +462,171 @@ public class Pithos implements EntryPoint, ResizeHandler {
                                                        trash = f;
                                                        break;
                                                }
-                                   folderTreeViewModel.initialize(account);
-                                   groupTreeViewModel.initialize();
-                                   showStatistics();
+                                   trees.add(folderTreeView);
+                                   folderTreeViewModel.initialize(account, new Command() {
+                                                               
+                                                               @Override
+                                                               public void execute() {
+                                                   createMySharedTree();
+                                                               }
+                                                       });
+
+                                   HorizontalPanel separator = new HorizontalPanel();
+                                   separator.addStyleName("pithos-statisticsSeparator");
+                                   separator.add(new HTML(""));
+                                   trees.add(separator);
+
+                                   groupTreeViewModel = new GroupTreeViewModel(Pithos.this);
+                                   groupTreeView = new GroupTreeView(groupTreeViewModel);
+                                   treeViews.add(groupTreeView);
+                                   trees.add(groupTreeView);
+                                   folderTreeView.showStatistics(account);
                                }
                                        }
                                });
             }
         });
     }
+    
+    public void scheduleResfresh() {
+               Scheduler.get().scheduleFixedDelay(new RepeatingCommand() {
+                       
+                       @Override
+                       public boolean execute() {
+                               final Folder f = getSelection();
+                               if (f == null)
+                                       return true;
+                               
+                       HeadRequest<Folder> head = new HeadRequest<Folder>(Folder.class, getApiPath(), getUsername(), "/" + f.getContainer()) {
+
+                                       @Override
+                                       public void onSuccess(Folder _result) {
+                                               lastModified = new Date();
+                                               if (getSelectedTree().equals(folderTreeView))
+                                                       updateFolder(f, true, new Command() {
+       
+                                                               @Override
+                                                               public void execute() {
+                                                                       scheduleResfresh();
+                                                               }
+                                                               
+                                                       }, false);
+                                               else if (getSelectedTree().equals(mysharedTreeView))
+                                                       updateSharedFolder(f, true, new Command() {
+       
+                                                               @Override
+                                                               public void execute() {
+                                                                       scheduleResfresh();
+                                                               }
+                                                       });
+                                       }
+
+                                       @Override
+                                       public void onError(Throwable t) {
+                                               if (t instanceof RestException && ((RestException) t).getHttpStatusCode() == HttpStatus.SC_NOT_MODIFIED)
+                                                       scheduleResfresh();
+                                               else if (retries >= MAX_RETRIES) {
+                                       GWT.log("Error heading folder", t);
+                                                       setError(t);
+                                       if (t instanceof RestException)
+                                           displayError("Error heading folder: " + ((RestException) t).getHttpStatusText());
+                                       else
+                                           displayError("System error heading folder: " + t.getMessage());
+                               }
+                               else {//retry
+                                       GWT.log("Retry " + retries);
+                                       Scheduler.get().scheduleDeferred(this);
+                               }
+                                       }
+
+                                       @Override
+                                       protected void onUnauthorized(Response response) {
+                                               if (retries >= MAX_RETRIES)
+                                                       sessionExpired();
+                               else //retry
+                                       Scheduler.get().scheduleDeferred(this);
+                                       }
+                               };
+                               head.setHeader("X-Auth-Token", getToken());
+                               head.setHeader("If-Modified-Since", DateTimeFormat.getFormat("EEE, dd MMM yyyy HH:mm:ss").format(lastModified, TimeZone.createTimeZone(0)) + " GMT");
+                               Scheduler.get().scheduleDeferred(head);
+                               
+                               return false;
+                       }
+               }, 3000);
+    }
 
     public void applyPermissions(Folder f) {
        if (f != null) {
-               if (f.isInTrash())
+               if (f.isInTrash()) {
                        upload.setEnabled(false);
+                       disableUploadArea();
+               }
                else {
                        Boolean[] perms = f.getPermissions().get(username);
                        if (f.getOwner().equals(username) || (perms != null && perms[1] != null && perms[1])) {
                                upload.setEnabled(true);
+                               enableUploadArea();
                        }
-                       else
+                       else {
                                upload.setEnabled(false);
+                               disableUploadArea();
+                       }
                }
        }
-       else
+       else {
                upload.setEnabled(false);
+               disableUploadArea();
+       }
        }
 
        @SuppressWarnings({ "rawtypes", "unchecked" })
        public void deselectOthers(TreeView _selectedTree, SingleSelectionModel model) {
        selectedTree = _selectedTree;
+       
         for (SingleSelectionModel s : selectionModels)
-            if (!s.equals(model))
+            if (!s.equals(model) && s.getSelectedObject() != null)
                 s.setSelected(s.getSelectedObject(), false);
     }
 
-    public void showFiles(Folder f) {
+    public void showFiles(final Folder f) {
         Set<File> files = f.getFiles();
         showFiles(files);
     }
 
     public void showFiles(Set<File> files) {
-        //Iterator<File> iter = files.iterator();
-        //fetchFile(iter, files);
         fileList.setFiles(new ArrayList<File>(files));
     }
 
-    protected void fetchFile(final Iterator<File> iter, final Set<File> files) {
-        if (iter.hasNext()) {
-            File file = iter.next();
-            String path = file.getUri() + "?format=json";
-            GetRequest<File> getFile = new GetRequest<File>(File.class, getApiPath(), username, path, file) {
-                @Override
-                public void onSuccess(@SuppressWarnings("unused") File _result) {
-                    fetchFile(iter, files);
-                }
-
-                @Override
-                public void onError(Throwable t) {
-                    GWT.log("Error getting file", t);
-                    if (t instanceof RestException)
-                        displayError("Error getting file: " + ((RestException) t).getHttpStatusText());
-                    else
-                        displayError("System error fetching file: " + t.getMessage());
-                }
-            };
-            getFile.setHeader("X-Auth-Token", "0000");
-            Scheduler.get().scheduleDeferred(getFile);
-        }
-        else
-            fileList.setFiles(new ArrayList<File>(files));
-    }
-
     /**
         * Parse and store the user credentials to the appropriate fields.
         */
        private boolean parseUserCredentials() {
-        username = Window.Location.getParameter("user");
-        token = Window.Location.getParameter("token");
         Configuration conf = (Configuration) GWT.create(Configuration.class);
-        if (username == null || username.length() == 0 || token == null || token.length() == 0) {
-            String cookie = conf.authCookie();
-            String auth = Cookies.getCookie(cookie);
-            if (auth == null) {
-                authenticateUser();
-                return false;
-            }
-                       String[] authSplit = auth.split("\\" + conf.cookieSeparator(), 2);
-                       if (authSplit.length != 2) {
-                           authenticateUser();
-                           return false;
-                       }
-                       username = authSplit[0];
-                       token = authSplit[1];
-                       return true;
+               Dictionary otherProperties = Dictionary.getDictionary("otherProperties");
+        String cookie = otherProperties.get("authCookie");
+        String auth = Cookies.getCookie(cookie);
+        if (auth == null) {
+            authenticateUser();
+            return false;
         }
-               Cookies.setCookie(conf.authCookie(), username + conf.cookieSeparator() + token);
+        if (auth.startsWith("\""))
+               auth = auth.substring(1);
+        if (auth.endsWith("\""))
+               auth = auth.substring(0, auth.length() - 1);
+               String[] authSplit = auth.split("\\" + conf.cookieSeparator(), 2);
+               if (authSplit.length != 2) {
+                   authenticateUser();
+                   return false;
+               }
+               username = authSplit[0];
+               token = authSplit[1];
+
+        String gotoUrl = Window.Location.getParameter("goto");
+               if (gotoUrl != null && gotoUrl.length() > 0) {
+                       Window.Location.assign(gotoUrl);
+                       return false;
+               }
                return true;
     }
 
@@ -569,11 +634,11 @@ public class Pithos implements EntryPoint, ResizeHandler {
         * Redirect the user to the login page for authentication.
         */
        protected void authenticateUser() {
-               Configuration conf = (Configuration) GWT.create(Configuration.class);
-        Window.Location.assign(conf.loginUrl() + "?next=" + Window.Location.getHref());
+               Dictionary otherProperties = Dictionary.getDictionary("otherProperties");
+        Window.Location.assign(otherProperties.get("loginUrl") + Window.Location.getHref());
        }
 
-       protected void fetchAccount(final Command callback) {
+       public void fetchAccount(final Command callback) {
         String path = "?format=json";
 
         GetRequest<AccountResource> getAccount = new GetRequest<AccountResource>(AccountResource.class, getApiPath(), username, path) {
@@ -587,11 +652,17 @@ public class Pithos implements EntryPoint, ResizeHandler {
             @Override
             public void onError(Throwable t) {
                 GWT.log("Error getting account", t);
+                               setError(t);
                 if (t instanceof RestException)
                     displayError("Error getting account: " + ((RestException) t).getHttpStatusText());
                 else
                     displayError("System error fetching user data: " + t.getMessage());
             }
+
+                       @Override
+                       protected void onUnauthorized(Response response) {
+                               sessionExpired();
+                       }
         };
         getAccount.setHeader("X-Auth-Token", token);
         Scheduler.get().scheduleDeferred(getAccount);
@@ -601,35 +672,34 @@ public class Pithos implements EntryPoint, ResizeHandler {
        HeadRequest<AccountResource> headAccount = new HeadRequest<AccountResource>(AccountResource.class, getApiPath(), username, "", account) {
 
                        @Override
-                       public void onSuccess(@SuppressWarnings("unused") AccountResource _result) {
-                               showStatistics();
+                       public void onSuccess(AccountResource _result) {
+                               folderTreeView.showStatistics(account);
                        }
 
                        @Override
                        public void onError(Throwable t) {
                 GWT.log("Error getting account", t);
+                               setError(t);
                 if (t instanceof RestException)
                     displayError("Error getting account: " + ((RestException) t).getHttpStatusText());
                 else
                     displayError("System error fetching user data: " + t.getMessage());
                        }
+
+                       @Override
+                       protected void onUnauthorized(Response response) {
+                               sessionExpired();
+                       }
                };
                headAccount.setHeader("X-Auth-Token", token);
                Scheduler.get().scheduleDeferred(headAccount);
        }
 
-       protected void showStatistics() {
-       totalFiles.setHTML(String.valueOf(account.getNumberOfObjects()));
-       usedBytes.setHTML(String.valueOf(account.getFileSizeAsString()));
-       totalBytes.setHTML(String.valueOf(account.getQuotaAsString()));
-       usedPercent.setHTML(String.valueOf(account.getUsedPercentage()));
-       }
-
        protected void createHomeContainer(final AccountResource _account, final Command callback) {
         String path = "/" + Pithos.HOME_CONTAINER;
         PutRequest createPithos = new PutRequest(getApiPath(), getUsername(), path) {
             @Override
-            public void onSuccess(@SuppressWarnings("unused") Resource result) {
+            public void onSuccess(Resource result) {
                if (!_account.hasTrashContainer())
                        createTrashContainer(callback);
                else
@@ -639,11 +709,17 @@ public class Pithos implements EntryPoint, ResizeHandler {
             @Override
             public void onError(Throwable t) {
                 GWT.log("Error creating pithos", t);
+                               setError(t);
                 if (t instanceof RestException)
                     displayError("Error creating pithos: " + ((RestException) t).getHttpStatusText());
                 else
                     displayError("System error Error creating pithos: " + t.getMessage());
             }
+
+                       @Override
+                       protected void onUnauthorized(Response response) {
+                               sessionExpired();
+                       }
         };
         createPithos.setHeader("X-Auth-Token", getToken());
         Scheduler.get().scheduleDeferred(createPithos);
@@ -653,18 +729,24 @@ public class Pithos implements EntryPoint, ResizeHandler {
         String path = "/" + Pithos.TRASH_CONTAINER;
         PutRequest createPithos = new PutRequest(getApiPath(), getUsername(), path) {
             @Override
-            public void onSuccess(@SuppressWarnings("unused") Resource result) {
+            public void onSuccess(Resource result) {
                        fetchAccount(callback);
             }
 
             @Override
             public void onError(Throwable t) {
                 GWT.log("Error creating pithos", t);
+                               setError(t);
                 if (t instanceof RestException)
                     displayError("Error creating pithos: " + ((RestException) t).getHttpStatusText());
                 else
                     displayError("System error Error creating pithos: " + t.getMessage());
             }
+
+                       @Override
+                       protected void onUnauthorized(Response response) {
+                               sessionExpired();
+                       }
         };
         createPithos.setHeader("X-Auth-Token", getToken());
         Scheduler.get().scheduleDeferred(createPithos);
@@ -688,13 +770,19 @@ public class Pithos implements EntryPoint, ResizeHandler {
 
        protected void onWindowResized(int height) {
                // Adjust the split panel to take up the available room in the window.
-               int newHeight = height - splitPanel.getAbsoluteTop() - 60;
+               int newHeight = height - splitPanel.getAbsoluteTop() - 153;
                if (newHeight < 1)
                        newHeight = 1;
                splitPanel.setHeight("" + newHeight);
                inner.setHeight("" + newHeight);
        }
-
+       
+       native boolean isCloudbarReady()/*-{
+               if ($wnd.$("div.servicesbar") && $wnd.$("div.servicesbar").height() > 0)
+                       return true;
+               return false;
+       }-*/;
+       
        @Override
        public void onResize(ResizeEvent event) {
                int height = event.getHeight();
@@ -708,6 +796,7 @@ public class Pithos implements EntryPoint, ResizeHandler {
         */
        public void displayError(String msg) {
                messagePanel.displayError(msg);
+               onWindowResized(Window.getClientHeight());
        }
 
        /**
@@ -717,6 +806,7 @@ public class Pithos implements EntryPoint, ResizeHandler {
         */
        public void displayWarning(String msg) {
                messagePanel.displayWarning(msg);
+               onWindowResized(Window.getClientHeight());
        }
 
        /**
@@ -726,6 +816,7 @@ public class Pithos implements EntryPoint, ResizeHandler {
         */
        public void displayInformation(String msg) {
                messagePanel.displayInformation(msg);
+               onWindowResized(Window.getClientHeight());
        }
 
        /**
@@ -764,12 +855,14 @@ public class Pithos implements EntryPoint, ResizeHandler {
        }
 
        public static native void preventIESelection() /*-{
-               $doc.body.onselectstart = function () { return false; };
+               $doc.body.onselectstart = function() {
+                       return false;
+               };
        }-*/;
 
        public static native void enableIESelection() /*-{
                if ($doc.body.onselectstart != null)
-               $doc.body.onselectstart = null;
+                       $doc.body.onselectstart = null;
        }-*/;
 
        /**
@@ -794,120 +887,50 @@ public class Pithos implements EntryPoint, ResizeHandler {
                History.newItem(key);
        }
 
-    public void deleteFolder(final Folder folder) {
-        String path = getApiPath() + folder.getOwner() + "/" + folder.getContainer() + "?format=json&delimiter=/&prefix=" + folder.getPrefix();
-        RequestBuilder builder = new RequestBuilder(RequestBuilder.GET, path);
-        builder.setHeader("If-Modified-Since", "0");
-        builder.setHeader("X-Auth-Token", getToken());
-        try {
-            builder.sendRequest("", new RequestCallback() {
-                @Override
-                public void onResponseReceived(@SuppressWarnings("unused") Request request, Response response) {
-                    if (response.getStatusCode() == Response.SC_OK) {
-                        JSONValue json = JSONParser.parseStrict(response.getText());
-                        JSONArray array = json.isArray();
-                        int i = 0;
-                        if (array != null) {
-                            deleteObject(folder, i, array);
-                        }
-                    }
-                }
-
-                @Override
-                public void onError(@SuppressWarnings("unused") Request request, Throwable exception) {
-                    displayError("System error unable to delete folder: " + exception.getMessage());
-                }
-            });
-        }
-        catch (RequestException e) {
-        }
-    }
-
-    void deleteObject(final Folder folder, final int i, final JSONArray array) {
-        if (i < array.size()) {
-            JSONObject o = array.get(i).isObject();
-            if (o != null && !o.containsKey("subdir")) {
-                JSONString name = o.get("name").isString();
-                String path = "/" + folder.getContainer() + "/" + name.stringValue();
-                DeleteRequest delete = new DeleteRequest(getApiPath(), folder.getOwner(), path) {
-                    @Override
-                    public void onSuccess(@SuppressWarnings("unused") Resource result) {
-                        deleteObject(folder, i + 1, array);
-                    }
-
-                    @Override
-                    public void onError(Throwable t) {
-                        GWT.log("", t);
-                        displayError("System error unable to delete folder: " + t.getMessage());
-                    }
-                };
-                delete.setHeader("X-Auth-Token", getToken());
-                Scheduler.get().scheduleDeferred(delete);
-            }
-            else if (o != null) {
-                String subdir = o.get("subdir").isString().stringValue();
-                subdir = subdir.substring(0, subdir.length() - 1);
-                String path = getApiPath() + getUsername() + "/" + folder.getContainer() + "?format=json&delimiter=/&prefix=" + subdir;
-                RequestBuilder builder = new RequestBuilder(RequestBuilder.GET, path);
-                builder.setHeader("If-Modified-Since", "0");
-                builder.setHeader("X-Auth-Token", getToken());
-                try {
-                    builder.sendRequest("", new RequestCallback() {
-                        @Override
-                        public void onResponseReceived(@SuppressWarnings("unused") Request request, Response response) {
-                            if (response.getStatusCode() == Response.SC_OK) {
-                                JSONValue json = JSONParser.parseStrict(response.getText());
-                                JSONArray array2 = json.isArray();
-                                if (array2 != null) {
-                                    int l = array.size();
-                                    for (int j=0; j<array2.size(); j++) {
-                                        array.set(l++, array2.get(j));
-                                    }
-                                }
-                                deleteObject(folder, i + 1, array);
-                            }
-                        }
-
-                        @Override
-                        public void onError(@SuppressWarnings("unused") Request request, Throwable exception) {
-                            displayError("System error unable to delete folder: " + exception.getMessage());
-                        }
-                    });
-                }
-                catch (RequestException e) {
-                }
-            }
-        }
-        else {
-            String path = folder.getUri();
-            DeleteRequest deleteFolder = new DeleteRequest(getApiPath(), getUsername(), path) {
-                @Override
-                public void onSuccess(@SuppressWarnings("unused") Resource result) {
-                    updateFolder(folder.getParent(), true, new Command() {
-                                               
-                                               @Override
-                                               public void execute() {
-                                                       updateStatistics();
-                                               }
-                                       });
-                }
-
-                @Override
-                public void onError(Throwable t) {
-                    GWT.log("", t);
-                    if (t instanceof RestException) {
-                       if (((RestException) t).getHttpStatusCode() != Response.SC_NOT_FOUND)
-                               displayError("Unable to delete folder: "+((RestException) t).getHttpStatusText());
-                       else
-                               onSuccess(null);
-                    }
-                    else
-                        displayError("System error unable to delete folder: " + t.getMessage());
+    public void deleteFolder(final Folder folder, final Command callback) {
+       final PleaseWaitPopup pwp = new PleaseWaitPopup();
+       pwp.center();
+        String path = "/" + folder.getContainer() + "/" + folder.getPrefix() + "?delimiter=/" + "&t=" + System.currentTimeMillis();
+        DeleteRequest deleteFolder = new DeleteRequest(getApiPath(), folder.getOwner(), path) {
+                       
+                       @Override
+                       protected void onUnauthorized(Response response) {
+                               pwp.hide();
+                               sessionExpired();
+                       }
+                       
+                       @Override
+                       public void onSuccess(Resource result) {
+                updateFolder(folder.getParent(), true, new Command() {
+                                       
+                                       @Override
+                                       public void execute() {
+                                               folderTreeSelectionModel.setSelected(folder.getParent(), true);
+                                               updateStatistics();
+                                               if (callback != null)
+                                                       callback.execute();
+                                               pwp.hide();
+                                       }
+                               }, true);
+                       }
+                       
+                       @Override
+                       public void onError(Throwable t) {
+                GWT.log("", t);
+                               setError(t);
+                if (t instanceof RestException) {
+                       if (((RestException) t).getHttpStatusCode() != Response.SC_NOT_FOUND)
+                               displayError("Unable to delete folder: "+((RestException) t).getHttpStatusText());
+                       else
+                               onSuccess(null);
                 }
-            };
-            deleteFolder.setHeader("X-Auth-Token", getToken());
-            Scheduler.get().scheduleDeferred(deleteFolder);
-        }
+                else
+                    displayError("System error unable to delete folder: " + t.getMessage());
+                               pwp.hide();
+                       }
+               };
+               deleteFolder.setHeader("X-Auth-Token", getToken());
+               Scheduler.get().scheduleDeferred(deleteFolder);
     }
 
     public FolderTreeView getFolderTreeView() {
@@ -920,93 +943,74 @@ public class Pithos implements EntryPoint, ResizeHandler {
             String path = targetUri + "/" + file.getName();
             PutRequest copyFile = new PutRequest(getApiPath(), targetUsername, path) {
                 @Override
-                public void onSuccess(@SuppressWarnings("unused") Resource result) {
+                public void onSuccess(Resource result) {
                     copyFiles(iter, targetUsername, targetUri, callback);
                 }
 
                 @Override
                 public void onError(Throwable t) {
                     GWT.log("", t);
+                                       setError(t);
                     if (t instanceof RestException) {
                         displayError("Unable to copy file: " + ((RestException) t).getHttpStatusText());
                     }
                     else
                         displayError("System error unable to copy file: "+t.getMessage());
                 }
-            };
-            copyFile.setHeader("X-Auth-Token", getToken());
-            copyFile.setHeader("X-Copy-From", file.getUri());
-            Scheduler.get().scheduleDeferred(copyFile);
-        }
-        else  if (callback != null) {
-            callback.execute();
-        }
-    }
 
-    public void copySubfolders(final Iterator<Folder> iter, final String targetUsername, final String targetUri, final Command callback) {
-        if (iter.hasNext()) {
-            final Folder f = iter.next();
-            copyFolder(f, targetUsername, targetUri, new Command() {
-                               
                                @Override
-                               public void execute() {
-                                       copySubfolders(iter, targetUsername, targetUri, callback);
+                               protected void onUnauthorized(Response response) {
+                                       sessionExpired();
                                }
-                       });
+            };
+            copyFile.setHeader("X-Auth-Token", getToken());
+            copyFile.setHeader("X-Copy-From", URL.encodePathSegment(file.getUri()));
+            if (!file.getOwner().equals(targetUsername))
+               copyFile.setHeader("X-Source-Account", URL.encodePathSegment(file.getOwner()));
+            copyFile.setHeader("Content-Type", file.getContentType());
+            Scheduler.get().scheduleDeferred(copyFile);
         }
         else  if (callback != null) {
             callback.execute();
         }
     }
 
-    public void copyFolder(final Folder f, final String targetUsername, final String targetUri, final Command callback) {
-        String path = targetUri + "/" + f.getName();
-        PutRequest createFolder = new PutRequest(getApiPath(), targetUsername, path) {
+    public void copyFolder(final Folder f, final String targetUsername, final String targetUri, boolean move, final Command callback) {
+        String path = targetUri + "?delimiter=/";
+        PutRequest copyFolder = new PutRequest(getApiPath(), targetUsername, path) {
             @Override
-            public void onSuccess(@SuppressWarnings("unused") Resource result) {
-               GetRequest<Folder> getFolder = new GetRequest<Folder>(Folder.class, getApiPath(), f.getOwner(), "/" + f.getContainer() + "?format=json&delimiter=/&prefix=" + f.getPrefix(), f) {
-
-                                       @Override
-                                       public void onSuccess(final Folder _f) {
-                               Iterator<File> iter = _f.getFiles().iterator();
-                               copyFiles(iter, targetUsername, targetUri + "/" + _f.getName(), new Command() {
-                                   @Override
-                                   public void execute() {
-                                       Iterator<Folder> iterf = _f.getSubfolders().iterator();
-                                       copySubfolders(iterf, targetUsername, targetUri + "/" + _f.getName(), callback);
-                                   }
-                               });
-                                       }
-
-                                       @Override
-                                       public void onError(Throwable t) {
-                               GWT.log("", t);
-                               if (t instanceof RestException) {
-                                   displayError("Unable to get folder: " + ((RestException) t).getHttpStatusText());
-                               }
-                               else
-                                   displayError("System error getting folder: " + t.getMessage());
-                                       }
-                               };
-                               getFolder.setHeader("X-Auth-Token", getToken());
-                               Scheduler.get().scheduleDeferred(getFolder);
+            public void onSuccess(Resource result) {
+               if (callback != null)
+                       callback.execute();
             }
 
             @Override
             public void onError(Throwable t) {
                 GWT.log("", t);
-                if (t instanceof RestException) {
-                    displayError("Unable to create folder: " + ((RestException) t).getHttpStatusText());
+                               setError(t);
+               if (t instanceof RestException) {
+                    displayError("Unable to copy folder: " + ((RestException) t).getHttpStatusText());
                 }
                 else
-                    displayError("System error creating folder: " + t.getMessage());
+                    displayError("System error copying folder: " + t.getMessage());
             }
+
+                       @Override
+                       protected void onUnauthorized(Response response) {
+                               sessionExpired();
+                       }
         };
-        createFolder.setHeader("X-Auth-Token", getToken());
-        createFolder.setHeader("Accept", "*/*");
-        createFolder.setHeader("Content-Length", "0");
-        createFolder.setHeader("Content-Type", "application/folder");
-        Scheduler.get().scheduleDeferred(createFolder);
+        copyFolder.setHeader("X-Auth-Token", getToken());
+        copyFolder.setHeader("Accept", "*/*");
+        copyFolder.setHeader("Content-Length", "0");
+        copyFolder.setHeader("Content-Type", "application/directory");
+        if (!f.getOwner().equals(targetUsername))
+               copyFolder.setHeader("X-Source-Account", f.getOwner());
+        if (move)
+            copyFolder.setHeader("X-Move-From", URL.encodePathSegment(f.getUri()));
+        else
+               copyFolder.setHeader("X-Copy-From", URL.encodePathSegment(f.getUri()));
+        Scheduler.get().scheduleDeferred(copyFolder);
     }
     
     public void addSelectionModel(@SuppressWarnings("rawtypes") SingleSelectionModel model) {
@@ -1018,17 +1022,18 @@ public class Pithos implements EntryPoint, ResizeHandler {
        }
 
        public void updateTrash(boolean showFiles, Command callback) {
-               updateFolder(trash, showFiles, callback);
+               updateFolder(trash, showFiles, callback, true);
        }
 
        public void updateGroupsNode() {
                groupTreeView.updateGroupNode(null);
        }
 
-       public void addGroup(String groupname) {
+       public Group addGroup(String groupname) {
                Group newGroup = new Group(groupname);
                account.addGroup(newGroup);
                groupTreeView.updateGroupNode(null);
+               return newGroup;
        }
 
        public void removeGroup(Group group) {
@@ -1040,8 +1045,14 @@ public class Pithos implements EntryPoint, ResizeHandler {
                return selectedTree;
        }
        
+       public void setSelectedTree(TreeView selected) {
+               selectedTree = selected;
+       }
+
        public Folder getSelection() {
-               return selectedTree.getSelection();
+               if (selectedTree != null)
+                       return selectedTree.getSelection();
+               return null;
        }
 
        public void showFolderStatistics(int folderFileCount) {
@@ -1051,4 +1062,310 @@ public class Pithos implements EntryPoint, ResizeHandler {
        public GroupTreeView getGroupTreeView() {
                return groupTreeView;
        }
+
+       public void sessionExpired() {
+               new SessionExpiredDialog(this).center();
+       }
+
+       public void updateRootFolder(Command callback) {
+               updateFolder(account.getPithos(), false, callback, true);
+       }
+
+       void createMySharedTree() {
+               mysharedTreeSelectionModel = new SingleSelectionModel<Folder>();
+               mysharedTreeSelectionModel.addSelectionChangeHandler(new Handler() {
+                   @Override
+                   public void onSelectionChange(SelectionChangeEvent event) {
+                       if (mysharedTreeSelectionModel.getSelectedObject() != null) {
+                           deselectOthers(mysharedTreeView, mysharedTreeSelectionModel);
+                           upload.setEnabled(false);
+                           disableUploadArea();
+                           updateSharedFolder(mysharedTreeSelectionModel.getSelectedObject(), true);
+                                       showRelevantToolbarButtons();
+                       }
+                               else {
+                                       if (getSelectedTree().equals(mysharedTreeView))
+                                               setSelectedTree(null);
+                                       if (getSelectedTree() == null)
+                                               showRelevantToolbarButtons();
+                               }
+                   }
+               });
+               selectionModels.add(mysharedTreeSelectionModel);
+               mysharedTreeViewModel = new MysharedTreeViewModel(Pithos.this, mysharedTreeSelectionModel);
+               mysharedTreeViewModel.initialize(new Command() {
+                       
+                       @Override
+                       public void execute() {
+                           mysharedTreeView = new MysharedTreeView(mysharedTreeViewModel);
+                               trees.insert(mysharedTreeView, 2);
+                               treeViews.add(mysharedTreeView);
+                               createOtherSharedTree();
+                       }
+               });
+       }
+
+       void createOtherSharedTree() {
+               otherSharedTreeSelectionModel = new SingleSelectionModel<Folder>();
+               otherSharedTreeSelectionModel.addSelectionChangeHandler(new Handler() {
+                   @Override
+                   public void onSelectionChange(SelectionChangeEvent event) {
+                       if (otherSharedTreeSelectionModel.getSelectedObject() != null) {
+                           deselectOthers(otherSharedTreeView, otherSharedTreeSelectionModel);
+                           applyPermissions(otherSharedTreeSelectionModel.getSelectedObject());
+                           updateOtherSharedFolder(otherSharedTreeSelectionModel.getSelectedObject(), true, null);
+                                       showRelevantToolbarButtons();
+                       }
+                               else {
+                                       if (getSelectedTree().equals(otherSharedTreeView))
+                                               setSelectedTree(null);
+                                       if (getSelectedTree() == null)
+                                               showRelevantToolbarButtons();
+                               }
+                   }
+               });
+               selectionModels.add(otherSharedTreeSelectionModel);
+               otherSharedTreeViewModel = new OtherSharedTreeViewModel(Pithos.this, otherSharedTreeSelectionModel);
+               otherSharedTreeViewModel.initialize(new Command() {
+                       
+                       @Override
+                       public void execute() {
+                           otherSharedTreeView = new OtherSharedTreeView(otherSharedTreeViewModel);
+                               trees.insert(otherSharedTreeView, 1);
+                               treeViews.add(otherSharedTreeView);
+                               scheduleResfresh();
+                       }
+               });
+       }
+
+       public native void log1(String message)/*-{
+               $wnd.console.log(message);
+       }-*/;
+
+       public String getErrorData() {
+               if (error != null)
+                       return error.toString();
+               return "";
+       }
+       
+       public void setError(Throwable t) {
+               error = t;
+       }
+       
+       public void showRelevantToolbarButtons() {
+               toolbar.showRelevantButtons();
+       }
+
+       public FileUploadDialog getFileUploadDialog() {
+               if (fileUploadDialog == null)
+                       fileUploadDialog = new FileUploadDialog(this);
+               return fileUploadDialog;
+       }
+
+       public void hideUploadIndicator() {
+               upload.removeStyleName("pithos-uploadButton-loading");
+               upload.setTitle("");
+       }
+       
+       public void showUploadIndicator() {
+               upload.addStyleName("pithos-uploadButton-loading");
+               upload.setTitle("Upload in progress. Click for details.");
+       }
+
+       public void scheduleFolderHeadCommand(final Folder folder, final Command callback) {
+               if (folder == null) {
+                       if (callback != null)
+                               callback.execute();
+               }
+               else {
+                       HeadRequest<Folder> headFolder = new HeadRequest<Folder>(Folder.class, getApiPath(), folder.getOwner(), folder.getUri(), folder) {
+       
+                               @Override
+                               public void onSuccess(Folder _result) {
+                                       if (callback != null)
+                                               callback.execute();
+                               }
+       
+                               @Override
+                               public void onError(Throwable t) {
+                               if (t instanceof RestException) {
+                                       if (((RestException) t).getHttpStatusCode() == Response.SC_NOT_FOUND) {
+                               final String path = folder.getUri();
+                               PutRequest newFolder = new PutRequest(getApiPath(), folder.getOwner(), path) {
+                                   @Override
+                                   public void onSuccess(Resource _result) {
+                                       scheduleFolderHeadCommand(folder, callback);
+                                   }
+       
+                                   @Override
+                                   public void onError(Throwable _t) {
+                                       GWT.log("", _t);
+                                                               setError(_t);
+                                       if(_t instanceof RestException){
+                                           displayError("Unable to create folder: " + ((RestException) _t).getHttpStatusText());
+                                       }
+                                       else
+                                           displayError("System error creating folder: " + _t.getMessage());
+                                   }
+       
+                                               @Override
+                                               protected void onUnauthorized(Response response) {
+                                                       sessionExpired();
+                                               }
+                               };
+                               newFolder.setHeader("X-Auth-Token", getToken());
+                               newFolder.setHeader("Content-Type", "application/folder");
+                               newFolder.setHeader("Accept", "*/*");
+                               newFolder.setHeader("Content-Length", "0");
+                               Scheduler.get().scheduleDeferred(newFolder);
+                                       }
+                                       else
+                                               displayError("Error heading folder: " + ((RestException) t).getHttpStatusText());
+                               }
+                               else
+                                   displayError("System error heading folder: " + t.getMessage());
+       
+                               GWT.log("Error heading folder", t);
+                                       setError(t);
+                               }
+       
+                               @Override
+                               protected void onUnauthorized(Response response) {
+                                       sessionExpired();
+                               }
+                       };
+                       headFolder.setHeader("X-Auth-Token", getToken());
+                       Scheduler.get().scheduleDeferred(headFolder);
+               }
+       }
+
+       public void scheduleFileHeadCommand(File f, final Command callback) {
+               HeadRequest<File> headFile = new HeadRequest<File>(File.class, getApiPath(), f.getOwner(), f.getUri(), f) {
+
+                       @Override
+                       public void onSuccess(File _result) {
+                               if (callback != null)
+                                       callback.execute();
+                       }
+
+                       @Override
+                       public void onError(Throwable t) {
+                       GWT.log("Error heading file", t);
+                               setError(t);
+                       if (t instanceof RestException)
+                           displayError("Error heading file: " + ((RestException) t).getHttpStatusText());
+                       else
+                           displayError("System error heading file: " + t.getMessage());
+                       }
+
+                       @Override
+                       protected void onUnauthorized(Response response) {
+                               sessionExpired();
+                       }
+               };
+               headFile.setHeader("X-Auth-Token", getToken());
+               Scheduler.get().scheduleDeferred(headFile);
+       }
+
+       public boolean isMySharedSelected() {
+               return getSelectedTree().equals(getMySharedTreeView());
+       }
+       
+       private Folder getUploadFolder() {
+               if (folderTreeView.equals(getSelectedTree()) || otherSharedTreeView.equals(getSelectedTree())) {
+                       return getSelection();
+               }
+               return null;
+       }
+       
+       private void updateUploadFolder() {
+               updateUploadFolder(null);
+       }
+       
+       private void updateUploadFolder(final JsArrayString urls) {
+               if (folderTreeView.equals(getSelectedTree()) || otherSharedTreeView.equals(getSelectedTree())) {
+                       Folder f = getSelection();
+                       if (getSelectedTree().equals(getFolderTreeView()))
+                               updateFolder(f, true, new Command() {
+                               
+                                       @Override
+                                       public void execute() {
+                                               updateStatistics();
+                                               if (urls != null)
+                                                       selectUploadedFiles(urls);
+                                       }
+                               }, false);
+                       else
+                               updateOtherSharedFolder(f, true, null);
+               }
+       }
+
+       public native void disableUploadArea() /*-{
+               var uploader = $wnd.$("#uploader").pluploadQueue();
+               var dropElm = $wnd.document.getElementById('rightPanel');
+               $wnd.plupload.removeAllEvents(dropElm, uploader.id);
+       }-*/;
+
+       public native void enableUploadArea() /*-{
+               var uploader = $wnd.$("#uploader").pluploadQueue();
+               var dropElm = $wnd.document.getElementById('rightPanel');
+               $wnd.plupload.removeAllEvents(dropElm, uploader.id);
+               if (uploader.runtime == 'html5') {
+                       uploader.settings.drop_element = 'rightPanel';
+                       uploader.trigger('PostInit');
+               }
+       }-*/;
+       
+       public void showUploadAlert(int nOfFiles) {
+               if (uploadAlert == null)
+                       uploadAlert = new UploadAlert(this, nOfFiles);
+               if (!uploadAlert.isShowing())
+                       uploadAlert.setPopupPositionAndShow(new PopupPanel.PositionCallback() {
+                               
+                               @Override
+                               public void setPosition(int offsetWidth, int offsetHeight) {
+                                       uploadAlert.setPopupPosition((Window.getClientWidth() - offsetWidth)/2, statusPanel.getAbsoluteTop() - offsetHeight);
+                               }
+                       });
+               uploadAlert.setNumOfFiles(nOfFiles);
+       }
+       
+       public void hideUploadAlert() {
+               if (uploadAlert != null && uploadAlert.isShowing())
+                       uploadAlert.hide();
+       }
+       
+       public void selectUploadedFiles(JsArrayString urls) {
+               List<String> selectedUrls = new ArrayList<String>();
+               for (int i=0; i<urls.length(); i++)
+                       selectedUrls.add(urls.get(i));
+               fileList.selectByUrl(selectedUrls);
+       }
+       
+       public void emptyTrash() {
+               DeleteRequest delete = new DeleteRequest(getApiPath(), getUsername(), "/trash?delimiter=/") {
+                       
+                       @Override
+                       protected void onUnauthorized(Response response) {
+                               sessionExpired();
+                       }
+                       
+                       @Override
+                       public void onSuccess(Resource result) {
+                               updateTrash(true, null);
+                       }
+                       
+                       @Override
+                       public void onError(Throwable t) {
+                GWT.log("Error deleting trash", t);
+                               setError(t);
+                if (t instanceof RestException)
+                    displayError("Error deleting trash: " + ((RestException) t).getHttpStatusText());
+                else
+                    displayError("System error deleting trash: " + t.getMessage());
+                       }
+               };
+               delete.setHeader("X-Auth-Token", getToken());
+               Scheduler.get().scheduleDeferred(delete);
+       }
 }