code.grnet.gr Git - pithos-web-client/blob - src/gr/grnet/pithos/web/client/othersharedtree/OtherSharedTreeViewModel.java

   1 /*
   2  * Copyright 2011 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.othersharedtree;
  37
  38 import gr.grnet.pithos.web.client.FolderContextMenu;
  39 import gr.grnet.pithos.web.client.Pithos;
  40 import gr.grnet.pithos.web.client.SharingUsers;
  41 import gr.grnet.pithos.web.client.foldertree.AccountResource;
  42 import gr.grnet.pithos.web.client.foldertree.File;
  43 import gr.grnet.pithos.web.client.foldertree.Folder;
  44 import gr.grnet.pithos.web.client.othersharedtree.OtherSharedTreeView.Templates;
  45 import gr.grnet.pithos.web.client.rest.GetRequest;
  46 import gr.grnet.pithos.web.client.rest.RestException;
  47
  48 import java.util.HashMap;
  49 import java.util.HashSet;
  50 import java.util.Iterator;
  51 import java.util.Map;
  52 import java.util.Set;
  53
  54 import com.google.gwt.cell.client.AbstractCell;
  55 import com.google.gwt.cell.client.Cell;
  56 import com.google.gwt.cell.client.TextCell;
  57 import com.google.gwt.cell.client.ValueUpdater;
  58 import com.google.gwt.core.client.GWT;
  59 import com.google.gwt.core.client.Scheduler;
  60 import com.google.gwt.event.dom.client.ContextMenuEvent;
  61 import com.google.gwt.http.client.Response;
  62 import com.google.gwt.http.client.URL;
  63 import com.google.gwt.safehtml.shared.SafeHtml;
  64 import com.google.gwt.safehtml.shared.SafeHtmlBuilder;
  65 import com.google.gwt.text.shared.SafeHtmlRenderer;
  66 import com.google.gwt.user.client.Command;
  67 import com.google.gwt.user.client.ui.AbstractImagePrototype;
  68 import com.google.gwt.view.client.ListDataProvider;
  69 import com.google.gwt.view.client.SelectionChangeEvent;
  70 import com.google.gwt.view.client.SelectionChangeEvent.Handler;
  71 import com.google.gwt.view.client.SingleSelectionModel;
  72 import com.google.gwt.view.client.TreeViewModel;
  73
  74 public class OtherSharedTreeViewModel implements TreeViewModel {
  75
  76         private static final String treeTitle = "Other 's shared";
  77     protected Pithos app;
  78
  79     private Cell<Folder> folderCell = new AbstractCell<Folder>(ContextMenuEvent.getType().getName()) {
  80
  81        @Override
  82         public void render(@SuppressWarnings("unused") Context context, Folder folder, SafeHtmlBuilder safeHtmlBuilder) {
  83             String html = AbstractImagePrototype.create(OtherSharedTreeView.images.folderYellow()).getHTML();
  84             safeHtmlBuilder.appendHtmlConstant(html);
  85             safeHtmlBuilder.append(Templates.INSTANCE.nameSpan(folder.getName()));
  86         }
  87
  88         @Override
  89         public void onBrowserEvent(@SuppressWarnings("unused") Context context, @SuppressWarnings("unused") com.google.gwt.dom.client.Element parent, Folder folder, com.google.gwt.dom.client.NativeEvent event, @SuppressWarnings("unused") ValueUpdater<Folder> valueUpdater) {
  90             if (event.getType().equals(ContextMenuEvent.getType().getName())) {
  91                 OtherSharedTreeViewModel.this.selectionModel.setSelected(folder, true);
  92                 FolderContextMenu menu = new FolderContextMenu(app, OtherSharedTreeView.images, app.getSelectedTree(), folder);
  93                 menu.setPopupPosition(event.getClientX(), event.getClientY());
  94                 menu.show();
  95             }
  96         }
  97     };
  98
  99     private ListDataProvider<String> rootDataProvider = new ListDataProvider<String>();
 100     protected ListDataProvider<String> userLevelDataProvider = new ListDataProvider<String>();
 101
 102     protected Map<String, ListDataProvider<Folder>> userDataProviderMap = new HashMap<String, ListDataProvider<Folder>>();
 103     private Map<Folder, ListDataProvider<Folder>> dataProviderMap = new HashMap<Folder, ListDataProvider<Folder>>();
 104
 105     protected Map<String, Set<File>> sharedFiles = new HashMap<String, Set<File>>();
 106
 107     protected SingleSelectionModel<Folder> selectionModel;
 108
 109     public OtherSharedTreeViewModel(Pithos _app, SingleSelectionModel<Folder> selectionModel) {
 110         app = _app;
 111         this.selectionModel = selectionModel;
 112     }
 113
 114     @Override
 115     public <T> NodeInfo<?> getNodeInfo(T value) {
 116         if (value == null) {
 117             rootDataProvider.getList().add(treeTitle);
 118             final SingleSelectionModel<String> selectionModel2 = new SingleSelectionModel<String>();
 119             selectionModel2.addSelectionChangeHandler(new Handler() {
 120
 121                 @Override
 122                 public void onSelectionChange(@SuppressWarnings("unused") SelectionChangeEvent event) {
 123                     if (selectionModel2.getSelectedObject() != null) {
 124                         app.deselectOthers(app.getOtherSharedTreeView(), selectionModel2);
 125                         app.applyPermissions(null);
 126                         app.showFiles(new HashSet<File>());
 127                     }
 128                 }
 129             });
 130             app.addSelectionModel(selectionModel2);
 131             return new DefaultNodeInfo<String>(rootDataProvider, new TextCell(new SafeHtmlRenderer<String>() {
 132                 @Override
 133                 public SafeHtml render(String object) {
 134                     SafeHtmlBuilder builder = new SafeHtmlBuilder();
 135                     render(object, builder);
 136                     return builder.toSafeHtml();
 137                 }
 138
 139                 @Override
 140                 public void render(String object, SafeHtmlBuilder builder) {
 141                     String html = AbstractImagePrototype.create(OtherSharedTreeView.images.othersShared()).getHTML();
 142                     builder.appendHtmlConstant(html);
 143                     builder.append(OtherSharedTreeView.Templates.INSTANCE.nameSpan(object));
 144                 }
 145             }),  selectionModel2, null);
 146         }
 147         else if (value instanceof String) {
 148                 if (value.equals(treeTitle)) {
 149                         fetchSharingUsers(null);
 150                     final SingleSelectionModel<String> selectionModel3 = new SingleSelectionModel<String>();
 151                     selectionModel3.addSelectionChangeHandler(new Handler() {
 152
 153                         @Override
 154                         public void onSelectionChange(@SuppressWarnings("unused") SelectionChangeEvent event) {
 155                             if (selectionModel3.getSelectedObject() != null) {
 156                                 app.deselectOthers(app.getOtherSharedTreeView(), selectionModel3);
 157                                 app.applyPermissions(null);
 158                                 String username = selectionModel3.getSelectedObject();
 159                                         if (userDataProviderMap.get(username) == null) {
 160                                                 userDataProviderMap.put(username, new ListDataProvider<Folder>());
 161                                         }
 162                                 fetchSharedFiles(username, userDataProviderMap.get(username));
 163                             }
 164                         }
 165                     });
 166                     app.addSelectionModel(selectionModel3);
 167                     return new DefaultNodeInfo<String>(userLevelDataProvider, new TextCell(new SafeHtmlRenderer<String>() {
 168
 169                                         @Override
 170                                         public SafeHtml render(String object) {
 171                             SafeHtmlBuilder builder = new SafeHtmlBuilder();
 172                             render(object, builder);
 173                             return builder.toSafeHtml();
 174                                         }
 175
 176                                         @Override
 177                                         public void render(String object, SafeHtmlBuilder builder) {
 178                             String html = AbstractImagePrototype.create(OtherSharedTreeView.images.user()).getHTML();
 179                             builder.appendHtmlConstant(html);
 180                             builder.append(OtherSharedTreeView.Templates.INSTANCE.nameSpan(object));
 181                                         }
 182                                 }), selectionModel3, null);
 183                 }
 184                         String username = (String) value;
 185                         if (userDataProviderMap.get(username) == null) {
 186                                 userDataProviderMap.put(username, new ListDataProvider<Folder>());
 187                         }
 188                         final ListDataProvider<Folder> dataProvider = userDataProviderMap.get(username);
 189                         fetchSharedContainers(username, dataProvider, null);
 190                         return new DefaultNodeInfo<Folder>(dataProvider, folderCell, selectionModel, null);
 191         }
 192         else {
 193             final Folder f = (Folder) value;
 194             if (dataProviderMap.get(f) == null) {
 195                 dataProviderMap.put(f, new ListDataProvider<Folder>());
 196             }
 197             final ListDataProvider<Folder> dataProvider = dataProviderMap.get(f);
 198             fetchFolder(f, dataProvider, false);
 199             return new DefaultNodeInfo<Folder>(dataProvider, folderCell, selectionModel, null);
 200         }
 201     }
 202
 203     private void fetchSharingUsers(final Command callback) {
 204         GetRequest<SharingUsers> getSharingUsers = new GetRequest<SharingUsers>(SharingUsers.class, app.getApiPath(), "", "?format=json") {
 205             @Override
 206             public void onSuccess(final SharingUsers _result) {
 207                 userLevelDataProvider.getList().clear();
 208                 userLevelDataProvider.getList().addAll(_result.getUsers());
 209                 for (String name : _result.getUsers()) {
 210                         sharedFiles.put(name, new HashSet<File>());
 211                 }
 212                 Iterator<String> iter = _result.getUsers().iterator();
 213                 fetchSharedContainers(iter, callback);
 214             }
 215
 216             @Override
 217             public void onError(Throwable t) {
 218                 GWT.log("Error getting folder", t);
 219                 if (t instanceof RestException)
 220                     app.displayError("Error getting folder: " + ((RestException) t).getHttpStatusText());
 221                 else
 222                     app.displayError("System error fetching folder: " + t.getMessage());
 223             }
 224
 225                         @Override
 226                         protected void onUnauthorized(Response response) {
 227                                 app.sessionExpired();
 228                         }
 229         };
 230         getSharingUsers.setHeader("X-Auth-Token", app.getToken());
 231         Scheduler.get().scheduleDeferred(getSharingUsers);
 232         }
 233
 234         protected void fetchSharedContainers(final Iterator<String> iter, final Command callback) {
 235                 if (iter.hasNext()) {
 236                         String username = iter.next();
 237                         if (userDataProviderMap.get(username) == null) {
 238                                 userDataProviderMap.put(username, new ListDataProvider<Folder>());
 239                         }
 240                         final ListDataProvider<Folder> dataProvider = userDataProviderMap.get(username);
 241                         fetchSharedContainers(username, dataProvider, new Command() {
 242
 243                                 @Override
 244                                 public void execute() {
 245                                         fetchSharedContainers(iter, callback);
 246
 247                                 }
 248                         });
 249                 }
 250                 else
 251                         if (callback != null)
 252                                 callback.execute();
 253         }
 254
 255         @Override
 256     public boolean isLeaf(Object o) {
 257                 if (o == null)
 258                         return false;
 259                 else if (o instanceof Folder) {
 260             Folder f = (Folder) o;
 261             return f.getSubfolders().isEmpty();
 262         }
 263                 else {
 264                         if (o.equals(treeTitle))
 265                                 return userLevelDataProvider.getList().isEmpty();
 266                         ListDataProvider<Folder> dp = userDataProviderMap.get(o);
 267                         if (dp != null)
 268                                 return dp.getList().isEmpty();
 269                         return true;
 270                 }
 271     }
 272
 273         private void fetchSharedContainers(final String username, final ListDataProvider<Folder> dataProvider, final Command callback) {
 274                 GetRequest<AccountResource> getUserSharedContainers = new GetRequest<AccountResource>(AccountResource.class, app.getApiPath(), username, "?format=json") {
 275
 276                         @Override
 277                         public void onSuccess(AccountResource _result) {
 278                         final ListDataProvider<Folder> tempProvider = new ListDataProvider<Folder>();
 279                                 Iterator<Folder> iter = _result.getContainers().iterator();
 280                                 fetchFolder(username, iter, tempProvider, new Command() {
 281
 282                                         @Override
 283                                         public void execute() {
 284                                                 dataProvider.getList().clear();
 285                                                 dataProvider.getList().addAll(tempProvider.getList());
 286                                                 if (callback != null)
 287                                                         callback.execute();
 288                                         }
 289                                 });
 290                         }
 291
 292                         @Override
 293                         public void onError(Throwable t) {
 294                 GWT.log("Error getting account", t);
 295                 if (t instanceof RestException)
 296                     app.displayError("Error getting account: " + ((RestException) t).getHttpStatusText());
 297                 else
 298                     app.displayError("System error fetching user data: " + t.getMessage());
 299                         }
 300
 301                         @Override
 302                         protected void onUnauthorized(Response response) {
 303                                 app.sessionExpired();
 304                         }
 305                 };
 306                 getUserSharedContainers.setHeader("X-Auth-Token", app.getToken());
 307                 Scheduler.get().scheduleDeferred(getUserSharedContainers);
 308         }
 309
 310         protected void fetchSharedFiles(final String username, final ListDataProvider<Folder> dataProvider) {
 311                 GetRequest<AccountResource> getUserSharedContainers = new GetRequest<AccountResource>(AccountResource.class, app.getApiPath(), username, "?format=json") {
 312
 313                         @Override
 314                         public void onSuccess(AccountResource _result) {
 315                         final ListDataProvider<Folder> tempProvider = new ListDataProvider<Folder>();
 316                                 Iterator<Folder> iter = _result.getContainers().iterator();
 317                                 fetchFolder(username, iter, tempProvider, new Command() {
 318
 319                                         @Override
 320                                         public void execute() {
 321                                                 dataProvider.getList().clear();
 322                                                 dataProvider.getList().addAll(tempProvider.getList());
 323                                                 app.showFiles(sharedFiles.get(username));
 324                                         }
 325                                 });
 326                         }
 327
 328                         @Override
 329                         public void onError(Throwable t) {
 330                 GWT.log("Error getting account", t);
 331                 if (t instanceof RestException)
 332                     app.displayError("Error getting account: " + ((RestException) t).getHttpStatusText());
 333                 else
 334                     app.displayError("System error fetching user data: " + t.getMessage());
 335                         }
 336
 337                         @Override
 338                         protected void onUnauthorized(Response response) {
 339                                 app.sessionExpired();
 340                         }
 341                 };
 342                 getUserSharedContainers.setHeader("X-Auth-Token", app.getToken());
 343                 Scheduler.get().scheduleDeferred(getUserSharedContainers);
 344         }
 345
 346         protected void fetchFolder(final String username, final Iterator<Folder> iter, final ListDataProvider<Folder> dataProvider, final Command callback) {
 347         if (iter.hasNext()) {
 348             final Folder f = iter.next();
 349
 350             String path = "/" + f.getContainer() + "?format=json&delimiter=/&prefix=" + URL.encodeQueryString(f.getPrefix());
 351             GetRequest<Folder> getFolder = new GetRequest<Folder>(Folder.class, app.getApiPath(), username, path, f) {
 352                 @Override
 353                 public void onSuccess(Folder _result) {
 354                         if (!_result.isShared()) {
 355                                 for (File file : _result.getFiles()) {
 356                                         if (file.isShared())
 357                                                 sharedFiles.get(username).add(file);
 358                                 }
 359                                 Iterator<Folder> iter2 = _result.getSubfolders().iterator();
 360                                 fetchFolder(username, iter2, dataProvider, new Command() {
 361
 362                                                         @Override
 363                                                         public void execute() {
 364                                             fetchFolder(username, iter, dataProvider, callback);
 365                                                         }
 366                                                 });
 367                         }
 368                         else {
 369                                 dataProvider.getList().add(_result);
 370                             fetchFolder(username, iter, dataProvider, callback);
 371                         }
 372                 }
 373
 374                 @Override
 375                 public void onError(Throwable t) {
 376                     GWT.log("Error getting folder", t);
 377                     if (t instanceof RestException)
 378                         app.displayError("Error getting folder: " + ((RestException) t).getHttpStatusText());
 379                     else
 380                         app.displayError("System error fetching folder: " + t.getMessage());
 381                 }
 382
 383                                 @Override
 384                                 protected void onUnauthorized(Response response) {
 385                                         app.sessionExpired();
 386                                 }
 387             };
 388             getFolder.setHeader("X-Auth-Token", app.getToken());
 389             Scheduler.get().scheduleDeferred(getFolder);
 390         }
 391         else if (callback != null)
 392             callback.execute();
 393     }
 394
 395     public Folder getSelection() {
 396         return selectionModel.getSelectedObject();
 397     }
 398
 399     public void updateFolder(Folder folder, boolean showfiles) {
 400         if (dataProviderMap.get(folder) == null) {
 401             dataProviderMap.put(folder, new ListDataProvider<Folder>());
 402         }
 403         final ListDataProvider<Folder> dataProvider = dataProviderMap.get(folder);
 404         fetchFolder(folder, dataProvider, showfiles);
 405     }
 406
 407     public void fetchFolder(final Folder f, final ListDataProvider<Folder> dataProvider, final boolean showfiles) {
 408         String path = "/" + f.getContainer() + "?format=json&delimiter=/&prefix=" + URL.encodeQueryString(f.getPrefix());
 409         GetRequest<Folder> getFolder = new GetRequest<Folder>(Folder.class, app.getApiPath(), f.getOwner(), path, f) {
 410             @Override
 411             public void onSuccess(final Folder _result) {
 412                 if (showfiles)
 413                     app.showFiles(_result);
 414                 Iterator<Folder> iter = _result.getSubfolders().iterator();
 415                 fetchFolder(_result.getOwner(), iter, dataProvider, new Command() {
 416                     @Override
 417                     public void execute() {
 418                         dataProvider.getList().clear();
 419                         dataProvider.getList().addAll(_result.getSubfolders());
 420                         app.getOtherSharedTreeView().updateChildren(f);
 421                     }
 422                 });
 423             }
 424
 425             @Override
 426             public void onError(Throwable t) {
 427                 GWT.log("Error getting folder", t);
 428                 if (t instanceof RestException)
 429                     app.displayError("Error getting folder: " + ((RestException) t).getHttpStatusText());
 430                 else
 431                     app.displayError("System error fetching folder: " + t.getMessage());
 432             }
 433
 434                         @Override
 435                         protected void onUnauthorized(Response response) {
 436                                 app.sessionExpired();
 437                         }
 438         };
 439         getFolder.setHeader("X-Auth-Token", app.getToken());
 440         Scheduler.get().scheduleDeferred(getFolder);
 441     }
 442
 443     public void initialize(Command callback) {
 444         fetchSharingUsers(callback);
 445     }
 446 }