code.grnet.gr Git - pithos-web-client/blob - src/gr/grnet/pithos/web/client/mysharedtree/MysharedTreeViewModel.java

   1 /*
   2  * Copyright 2011-2012 GRNET S.A. All rights reserved.
   3  *
   4  * Redistribution and use in source and binary forms, with or
   5  * without modification, are permitted provided that the following
   6  * conditions are met:
   7  *
   8  *   1. Redistributions of source code must retain the above
   9  *      copyright notice, this list of conditions and the following
  10  *      disclaimer.
  11  *
  12  *   2. Redistributions in binary form must reproduce the above
  13  *      copyright notice, this list of conditions and the following
  14  *      disclaimer in the documentation and/or other materials
  15  *      provided with the distribution.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY GRNET S.A. ``AS IS'' AND ANY EXPRESS
  18  * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  19  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  20  * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GRNET S.A OR
  21  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  22  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  23  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
  24  * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
  25  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  26  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
  27  * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  28  * POSSIBILITY OF SUCH DAMAGE.
  29  *
  30  * The views and conclusions contained in the software and
  31  * documentation are those of the authors and should not be
  32  * interpreted as representing official policies, either expressed
  33  * or implied, of GRNET S.A.
  34  */
  35
  36 package gr.grnet.pithos.web.client.mysharedtree;
  37
  38 import gr.grnet.pithos.web.client.FolderContextMenu;
  39 import gr.grnet.pithos.web.client.Pithos;
  40 import gr.grnet.pithos.web.client.foldertree.AccountResource;
  41 import gr.grnet.pithos.web.client.foldertree.File;
  42 import gr.grnet.pithos.web.client.foldertree.Folder;
  43 import gr.grnet.pithos.web.client.mysharedtree.MysharedTreeView.Templates;
  44 import gr.grnet.pithos.web.client.rest.GetRequest;
  45 import gr.grnet.pithos.web.client.rest.RestException;
  46
  47 import java.util.Iterator;
  48
  49 import com.google.gwt.cell.client.AbstractCell;
  50 import com.google.gwt.cell.client.Cell;
  51 import com.google.gwt.cell.client.ValueUpdater;
  52 import com.google.gwt.core.client.GWT;
  53 import com.google.gwt.core.client.Scheduler;
  54 import com.google.gwt.event.dom.client.ContextMenuEvent;
  55 import com.google.gwt.http.client.Response;
  56 import com.google.gwt.http.client.URL;
  57 import com.google.gwt.safehtml.shared.SafeHtmlBuilder;
  58 import com.google.gwt.user.client.Command;
  59 import com.google.gwt.user.client.ui.AbstractImagePrototype;
  60 import com.google.gwt.view.client.ListDataProvider;
  61 import com.google.gwt.view.client.SingleSelectionModel;
  62 import com.google.gwt.view.client.TreeViewModel;
  63
  64 public class MysharedTreeViewModel implements TreeViewModel {
  65
  66     protected Pithos app;
  67
  68     Folder dummy = new Folder("No files shared by me");
  69
  70     private Cell<Folder> folderCell = new AbstractCell<Folder>(ContextMenuEvent.getType().getName()) {
  71
  72        @Override
  73         public void render(Context context, Folder folder, SafeHtmlBuilder safeHtmlBuilder) {
  74            if (!folder.equals(dummy)) {
  75                    String html = AbstractImagePrototype.create(MysharedTreeView.images.folderYellow()).getHTML();
  76                 safeHtmlBuilder.appendHtmlConstant(html).appendHtmlConstant("&nbsp;");
  77            }
  78             safeHtmlBuilder.append(Templates.INSTANCE.nameSpan(folder.getName()));
  79         }
  80
  81        @Override
  82        public void onBrowserEvent(Context context, com.google.gwt.dom.client.Element parent, final Folder folder, com.google.gwt.dom.client.NativeEvent event, ValueUpdater<Folder> valueUpdater) {
  83            if (event.getType().equals(ContextMenuEvent.getType().getName())) {
  84                 final int x = event.getClientX();
  85                 final int y = event.getClientY();
  86                MysharedTreeViewModel.this.selectionModel.setSelected(folder, true);
  87                app.scheduleFolderHeadCommand(folder, new Command() {
  88
  89                                         @Override
  90                                         public void execute() {
  91                                 FolderContextMenu menu = new FolderContextMenu(app, MysharedTreeView.images, app.getSelectedTree(), folder);
  92                                 menu.setPopupPosition(x, y);
  93                                 menu.show();
  94                                         }
  95                                 });
  96            }
  97        }
  98     };
  99
 100     protected ListDataProvider<Folder> firstLevelDataProvider = new ListDataProvider<Folder>();
 101
 102     protected SingleSelectionModel<Folder> selectionModel;
 103
 104     public MysharedTreeViewModel(Pithos _app, SingleSelectionModel<Folder> selectionModel) {
 105         app = _app;
 106         this.selectionModel = selectionModel;
 107     }
 108
 109     @Override
 110     public <T> NodeInfo<?> getNodeInfo(T value) {
 111         if (value == null) {
 112                 fetchSharedContainers(null);
 113                 if (firstLevelDataProvider.getList().get(0).equals(dummy))
 114                 return new DefaultNodeInfo<Folder>(firstLevelDataProvider, folderCell, null, null);
 115             return new DefaultNodeInfo<Folder>(firstLevelDataProvider, folderCell, selectionModel, null);
 116         }
 117         return null;
 118     }
 119
 120         private void fetchSharedContainers(final Command callback) {
 121         String path = "?format=json&shared=&public=";
 122         GetRequest<AccountResource> getAccount = new GetRequest<AccountResource>(AccountResource.class, app.getApiPath(), app.getUserID(), path) {
 123             @Override
 124             public void onSuccess(final AccountResource _result) {
 125                                 firstLevelDataProvider.getList().clear();
 126                 for (Folder c : _result.getContainers()) {
 127                         if (c.isHome())
 128                                 firstLevelDataProvider.getList().add(0, c); //Pithos is always first
 129                         else if (!c.isTrash())
 130                                 firstLevelDataProvider.getList().add(c);
 131                 }
 132                 if (firstLevelDataProvider.getList().isEmpty())
 133                         firstLevelDataProvider.getList().add(dummy);
 134                                 if (callback != null)
 135                                         callback.execute();
 136             }
 137
 138             @Override
 139             public void onError(Throwable t) {
 140                 GWT.log("Error getting account", t);
 141                                 app.setError(t);
 142                 if (t instanceof RestException)
 143                     app.displayError("Error getting account: " + ((RestException) t).getHttpStatusText());
 144                 else
 145                     app.displayError("System error fetching user data: " + t.getMessage());
 146             }
 147
 148                         @Override
 149                         protected void onUnauthorized(Response response) {
 150                                 app.sessionExpired();
 151                         }
 152         };
 153         getAccount.setHeader("X-Auth-Token", app.getUserToken());
 154         Scheduler.get().scheduleDeferred(getAccount);
 155         }
 156
 157         @Override
 158     public boolean isLeaf(Object o) {
 159                 if (o == null)
 160                         return firstLevelDataProvider.getList().isEmpty();
 161                 return true;
 162     }
 163
 164         private native void log(String msg) /*-{
 165                 $wnd.console.log(msg);
 166         }-*/;
 167
 168     protected void fetchFolder(final Iterator<Folder> iter, final Command callback) {
 169         if (iter.hasNext()) {
 170             final Folder f = iter.next();
 171
 172             String path = "/" + f.getContainer() + "?format=json&shared=&public=&delimiter=/&prefix=" + URL.encodeQueryString(f.getPrefix());
 173             GetRequest<Folder> getFolder = new GetRequest<Folder>(Folder.class, app.getApiPath(), f.getOwnerID(), path, f) {
 174                 @Override
 175                 public void onSuccess(Folder _result) {
 176                     fetchFolder(iter, callback);
 177                 }
 178
 179                 @Override
 180                 public void onError(Throwable t) {
 181                     GWT.log("Error getting folder", t);
 182                                         app.setError(t);
 183                     if (t instanceof RestException)
 184                         app.displayError("Error getting folder: " + ((RestException) t).getHttpStatusText());
 185                     else
 186                         app.displayError("System error fetching folder: " + t.getMessage());
 187                 }
 188
 189                                 @Override
 190                                 protected void onUnauthorized(Response response) {
 191                                         app.sessionExpired();
 192                                 }
 193             };
 194             getFolder.setHeader("X-Auth-Token", app.getUserToken());
 195             Scheduler.get().scheduleDeferred(getFolder);
 196         }
 197         else if (callback != null)
 198             callback.execute();
 199     }
 200
 201     public Folder getSelection() {
 202         return selectionModel.getSelectedObject();
 203     }
 204
 205     public void updateFolder(Folder folder, boolean showfiles, Command callback) {
 206         fetchFolder(folder, showfiles, callback);
 207     }
 208
 209     public void fetchFolder(final Folder f, final boolean showfiles, final Command callback) {
 210         String path = "/" + f.getContainer() + "?format=json&shared=&public=" + URL.encodeQueryString(f.getPrefix());
 211         GetRequest<Folder> getFolder = new GetRequest<Folder>(Folder.class, app.getApiPath(), f.getOwnerID(), path, f) {
 212             @Override
 213             public void onSuccess(final Folder _result) {
 214                 for (File file : _result.getFiles()) {
 215                         String name = file.getName();
 216                                         if (name.lastIndexOf("/") != -1) {
 217                                                 file.setName(name.substring(name.lastIndexOf("/") + 1, name.length()));
 218                                         }
 219                 }
 220
 221                 if (showfiles)
 222                     app.showFiles(_result);
 223                 if (callback != null)
 224                         callback.execute();
 225             }
 226
 227             @Override
 228             public void onError(Throwable t) {
 229                 GWT.log("Error getting folder", t);
 230                                 app.setError(t);
 231                 if (t instanceof RestException)
 232                     app.displayError("Error getting folder: " + ((RestException) t).getHttpStatusText());
 233                 else
 234                     app.displayError("System error fetching folder: " + t.getMessage());
 235             }
 236
 237                         @Override
 238                         protected void onUnauthorized(Response response) {
 239                                 app.sessionExpired();
 240                         }
 241         };
 242         getFolder.setHeader("X-Auth-Token", app.getUserToken());
 243         Scheduler.get().scheduleDeferred(getFolder);
 244     }
 245
 246         public void initialize(Command callback) {
 247                 fetchSharedContainers(callback);
 248         }
 249 }