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).appendHtmlConstant("&nbsp;");
  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).appendHtmlConstant("&nbsp;");
 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).appendHtmlConstant("&nbsp;");
 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                                 app.setError(t);
 220                 if (t instanceof RestException)
 221                     app.displayError("Error getting folder: " + ((RestException) t).getHttpStatusText());
 222                 else
 223                     app.displayError("System error fetching folder: " + t.getMessage());
 224             }
 225
 226                         @Override
 227                         protected void onUnauthorized(Response response) {
 228                                 app.sessionExpired();
 229                         }
 230         };
 231         getSharingUsers.setHeader("X-Auth-Token", app.getToken());
 232         Scheduler.get().scheduleDeferred(getSharingUsers);
 233         }
 234
 235         protected void fetchSharedContainers(final Iterator<String> iter, final Command callback) {
 236                 if (iter.hasNext()) {
 237                         String username = iter.next();
 238                         if (userDataProviderMap.get(username) == null) {
 239                                 userDataProviderMap.put(username, new ListDataProvider<Folder>());
 240                         }
 241                         final ListDataProvider<Folder> dataProvider = userDataProviderMap.get(username);
 242                         fetchSharedContainers(username, dataProvider, new Command() {
 243
 244                                 @Override
 245                                 public void execute() {
 246                                         fetchSharedContainers(iter, callback);
 247
 248                                 }
 249                         });
 250                 }
 251                 else
 252                         if (callback != null)
 253                                 callback.execute();
 254         }
 255
 256         @Override
 257     public boolean isLeaf(Object o) {
 258                 if (o == null)
 259                         return false;
 260                 else if (o instanceof Folder) {
 261             Folder f = (Folder) o;
 262             return f.getSubfolders().isEmpty();
 263         }
 264                 else {
 265                         if (o.equals(treeTitle))
 266                                 return userLevelDataProvider.getList().isEmpty();
 267                         ListDataProvider<Folder> dp = userDataProviderMap.get(o);
 268                         if (dp != null)
 269                                 return dp.getList().isEmpty();
 270                         return true;
 271                 }
 272     }
 273
 274         private void fetchSharedContainers(final String username, final ListDataProvider<Folder> dataProvider, final Command callback) {
 275                 GetRequest<AccountResource> getUserSharedContainers = new GetRequest<AccountResource>(AccountResource.class, app.getApiPath(), username, "?format=json") {
 276
 277                         @Override
 278                         public void onSuccess(AccountResource _result) {
 279                         final ListDataProvider<Folder> tempProvider = new ListDataProvider<Folder>();
 280                                 Iterator<Folder> iter = _result.getContainers().iterator();
 281                                 fetchFolder(username, iter, tempProvider, new Command() {
 282
 283                                         @Override
 284                                         public void execute() {
 285                                                 dataProvider.getList().clear();
 286                                                 dataProvider.getList().addAll(tempProvider.getList());
 287                                                 if (callback != null)
 288                                                         callback.execute();
 289                                         }
 290                                 });
 291                         }
 292
 293                         @Override
 294                         public void onError(Throwable t) {
 295                 GWT.log("Error getting account", t);
 296                                 app.setError(t);
 297                 if (t instanceof RestException)
 298                     app.displayError("Error getting account: " + ((RestException) t).getHttpStatusText());
 299                 else
 300                     app.displayError("System error fetching user data: " + t.getMessage());
 301                         }
 302
 303                         @Override
 304                         protected void onUnauthorized(Response response) {
 305                                 app.sessionExpired();
 306                         }
 307                 };
 308                 getUserSharedContainers.setHeader("X-Auth-Token", app.getToken());
 309                 Scheduler.get().scheduleDeferred(getUserSharedContainers);
 310         }
 311
 312         protected void fetchSharedFiles(final String username, final ListDataProvider<Folder> dataProvider) {
 313                 GetRequest<AccountResource> getUserSharedContainers = new GetRequest<AccountResource>(AccountResource.class, app.getApiPath(), username, "?format=json") {
 314
 315                         @Override
 316                         public void onSuccess(AccountResource _result) {
 317                         final ListDataProvider<Folder> tempProvider = new ListDataProvider<Folder>();
 318                                 Iterator<Folder> iter = _result.getContainers().iterator();
 319                                 sharedFiles.get(username).clear();
 320                                 fetchFolder(username, iter, tempProvider, new Command() {
 321
 322                                         @Override
 323                                         public void execute() {
 324                                                 dataProvider.getList().clear();
 325                                                 dataProvider.getList().addAll(tempProvider.getList());
 326                                                 app.showFiles(sharedFiles.get(username));
 327                                         }
 328                                 });
 329                         }
 330
 331                         @Override
 332                         public void onError(Throwable t) {
 333                 GWT.log("Error getting account", t);
 334                                 app.setError(t);
 335                 if (t instanceof RestException)
 336                     app.displayError("Error getting account: " + ((RestException) t).getHttpStatusText());
 337                 else
 338                     app.displayError("System error fetching user data: " + t.getMessage());
 339                         }
 340
 341                         @Override
 342                         protected void onUnauthorized(Response response) {
 343                                 app.sessionExpired();
 344                         }
 345                 };
 346                 getUserSharedContainers.setHeader("X-Auth-Token", app.getToken());
 347                 Scheduler.get().scheduleDeferred(getUserSharedContainers);
 348         }
 349
 350         protected void fetchFolder(final String username, final Iterator<Folder> iter, final ListDataProvider<Folder> dataProvider, final Command callback) {
 351         if (iter.hasNext()) {
 352             final Folder f = iter.next();
 353
 354             String path = "/" + f.getContainer() + "?format=json&delimiter=/&prefix=" + URL.encodeQueryString(f.getPrefix());
 355             GetRequest<Folder> getFolder = new GetRequest<Folder>(Folder.class, app.getApiPath(), username, path, f) {
 356                 @Override
 357                 public void onSuccess(Folder _result) {
 358                         if (!_result.isShared()) {
 359                                 for (File file : _result.getFiles()) {
 360                                         if (file.isShared())
 361                                                 sharedFiles.get(username).add(file);
 362                                 }
 363                                 Iterator<Folder> iter2 = _result.getSubfolders().iterator();
 364                                 fetchFolder(username, iter2, dataProvider, new Command() {
 365
 366                                                         @Override
 367                                                         public void execute() {
 368                                             fetchFolder(username, iter, dataProvider, callback);
 369                                                         }
 370                                                 });
 371                         }
 372                         else {
 373                                 dataProvider.getList().add(_result);
 374                             fetchFolder(username, iter, dataProvider, callback);
 375                         }
 376                 }
 377
 378                 @Override
 379                 public void onError(Throwable t) {
 380                     GWT.log("Error getting folder", t);
 381                                         app.setError(t);
 382                     if (t instanceof RestException)
 383                         app.displayError("Error getting folder: " + ((RestException) t).getHttpStatusText());
 384                     else
 385                         app.displayError("System error fetching folder: " + t.getMessage());
 386                 }
 387
 388                                 @Override
 389                                 protected void onUnauthorized(Response response) {
 390                                         app.sessionExpired();
 391                                 }
 392             };
 393             getFolder.setHeader("X-Auth-Token", app.getToken());
 394             Scheduler.get().scheduleDeferred(getFolder);
 395         }
 396         else if (callback != null)
 397             callback.execute();
 398     }
 399
 400     public Folder getSelection() {
 401         return selectionModel.getSelectedObject();
 402     }
 403
 404     public void updateFolder(Folder folder, boolean showfiles) {
 405         if (dataProviderMap.get(folder) == null) {
 406             dataProviderMap.put(folder, new ListDataProvider<Folder>());
 407         }
 408         final ListDataProvider<Folder> dataProvider = dataProviderMap.get(folder);
 409         fetchFolder(folder, dataProvider, showfiles);
 410     }
 411
 412     public void fetchFolder(final Folder f, final ListDataProvider<Folder> dataProvider, final boolean showfiles) {
 413         String path = "/" + f.getContainer() + "?format=json&delimiter=/&prefix=" + URL.encodeQueryString(f.getPrefix());
 414         GetRequest<Folder> getFolder = new GetRequest<Folder>(Folder.class, app.getApiPath(), f.getOwner(), path, f) {
 415             @Override
 416             public void onSuccess(final Folder _result) {
 417                 GWT.log(String.valueOf(_result.getFiles().size()));
 418                 if (showfiles)
 419                     app.showFiles(_result);
 420                 Iterator<Folder> iter = _result.getSubfolders().iterator();
 421                 fetchFolder(_result.getOwner(), iter, dataProvider, new Command() {
 422                     @Override
 423                     public void execute() {
 424                         dataProvider.getList().clear();
 425                         dataProvider.getList().addAll(_result.getSubfolders());
 426                         app.getOtherSharedTreeView().updateChildren(f);
 427                     }
 428                 });
 429             }
 430
 431             @Override
 432             public void onError(Throwable t) {
 433                 GWT.log("Error getting folder", t);
 434                                 app.setError(t);
 435                 if (t instanceof RestException)
 436                     app.displayError("Error getting folder: " + ((RestException) t).getHttpStatusText());
 437                 else
 438                     app.displayError("System error fetching folder: " + t.getMessage());
 439             }
 440
 441                         @Override
 442                         protected void onUnauthorized(Response response) {
 443                                 app.sessionExpired();
 444                         }
 445         };
 446         getFolder.setHeader("X-Auth-Token", app.getToken());
 447         Scheduler.get().scheduleDeferred(getFolder);
 448     }
 449
 450     public void initialize(Command callback) {
 451         fetchSharingUsers(callback);
 452     }
 453 }