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.Folder;
  42 import gr.grnet.pithos.web.client.mysharedtree.MysharedTreeView;
  43 import gr.grnet.pithos.web.client.othersharedtree.OtherSharedTreeView.Templates;
  44 import gr.grnet.pithos.web.client.rest.GetRequest;
  45 import gr.grnet.pithos.web.client.rest.RestException;
  46
  47 import java.util.HashMap;
  48 import java.util.Iterator;
  49 import java.util.List;
  50 import java.util.Map;
  51
  52 import com.google.gwt.cell.client.AbstractCell;
  53 import com.google.gwt.cell.client.Cell;
  54 import com.google.gwt.cell.client.TextCell;
  55 import com.google.gwt.cell.client.ValueUpdater;
  56 import com.google.gwt.core.client.GWT;
  57 import com.google.gwt.core.client.Scheduler;
  58 import com.google.gwt.event.dom.client.ContextMenuEvent;
  59 import com.google.gwt.safehtml.shared.SafeHtml;
  60 import com.google.gwt.safehtml.shared.SafeHtmlBuilder;
  61 import com.google.gwt.text.shared.SafeHtmlRenderer;
  62 import com.google.gwt.user.client.Command;
  63 import com.google.gwt.user.client.ui.AbstractImagePrototype;
  64 import com.google.gwt.view.client.ListDataProvider;
  65 import com.google.gwt.view.client.SelectionChangeEvent;
  66 import com.google.gwt.view.client.SelectionChangeEvent.Handler;
  67 import com.google.gwt.view.client.SingleSelectionModel;
  68 import com.google.gwt.view.client.TreeViewModel;
  69
  70 public class OtherSharedTreeViewModel implements TreeViewModel {
  71
  72     protected Pithos app;
  73
  74     private Cell<Folder> folderCell = new AbstractCell<Folder>(ContextMenuEvent.getType().getName()) {
  75
  76        @Override
  77         public void render(Context context, Folder folder, SafeHtmlBuilder safeHtmlBuilder) {
  78             String html = AbstractImagePrototype.create(OtherSharedTreeView.images.folderYellow()).getHTML();
  79             safeHtmlBuilder.appendHtmlConstant(html);
  80             safeHtmlBuilder.append(Templates.INSTANCE.nameSpan(folder.getName()));
  81         }
  82
  83         @Override
  84         public void onBrowserEvent(Context context, com.google.gwt.dom.client.Element parent, Folder folder, com.google.gwt.dom.client.NativeEvent event, ValueUpdater<Folder> valueUpdater) {
  85             if (event.getType().equals(ContextMenuEvent.getType().getName())) {
  86                 OtherSharedTreeViewModel.this.selectionModel.setSelected(folder, true);
  87                 FolderContextMenu menu = new FolderContextMenu(app, OtherSharedTreeView.images, folder);
  88                 menu.setPopupPosition(event.getClientX(), event.getClientY());
  89                 menu.show();
  90             }
  91         }
  92     };
  93
  94     private ListDataProvider<String> rootDataProvider = new ListDataProvider<String>();
  95     private ListDataProvider<String> firstLevelDataProvider = new ListDataProvider<String>();
  96
  97     private Map<String, ListDataProvider<Folder>> userDataProviderMap = new HashMap<String, ListDataProvider<Folder>>();
  98     private Map<Folder, ListDataProvider<Folder>> dataProviderMap = new HashMap<Folder, ListDataProvider<Folder>>();
  99
 100     private SingleSelectionModel<Folder> selectionModel;
 101
 102     public OtherSharedTreeViewModel(Pithos _app, SingleSelectionModel<Folder> selectionModel) {
 103         app = _app;
 104         this.selectionModel = selectionModel;
 105     }
 106
 107     @Override
 108     public <T> NodeInfo<?> getNodeInfo(T value) {
 109         if (value == null) {
 110             rootDataProvider.getList().add("Other 's Shared");
 111             final SingleSelectionModel<String> selectionModel2 = new SingleSelectionModel<String>();
 112             selectionModel2.addSelectionChangeHandler(new Handler() {
 113
 114                 @Override
 115                 public void onSelectionChange(SelectionChangeEvent event) {
 116                     if (selectionModel2.getSelectedObject() != null) {
 117                         app.deselectOthers(selectionModel2);
 118                     }
 119                 }
 120             });
 121             app.addSelectionModel(selectionModel2);
 122             return new DefaultNodeInfo<String>(rootDataProvider, new TextCell(new SafeHtmlRenderer<String>() {
 123                 @Override
 124                 public SafeHtml render(String object) {
 125                     SafeHtmlBuilder builder = new SafeHtmlBuilder();
 126                     render(object, builder);
 127                     return builder.toSafeHtml();
 128                 }
 129
 130                 @Override
 131                 public void render(String object, SafeHtmlBuilder builder) {
 132                     String html = AbstractImagePrototype.create(OtherSharedTreeView.images.othersShared()).getHTML();
 133                     builder.appendHtmlConstant(html);
 134                     builder.append(OtherSharedTreeView.Templates.INSTANCE.nameSpan(object));
 135                 }
 136             }),  selectionModel2, null);
 137         }
 138         else if (value instanceof String) {
 139                 if (value.equals("Other 's Shared")) {
 140                         fetchSharingUsers(firstLevelDataProvider);
 141                     final SingleSelectionModel<String> selectionModel3 = new SingleSelectionModel<String>();
 142                     selectionModel3.addSelectionChangeHandler(new Handler() {
 143
 144                         @Override
 145                         public void onSelectionChange(SelectionChangeEvent event) {
 146                             if (selectionModel3.getSelectedObject() != null) {
 147                                 app.deselectOthers(selectionModel3);
 148                             }
 149                         }
 150                     });
 151                     app.addSelectionModel(selectionModel3);
 152                     return new DefaultNodeInfo<String>(firstLevelDataProvider, new TextCell(new SafeHtmlRenderer<String>() {
 153
 154                                         @Override
 155                                         public SafeHtml render(String object) {
 156                             SafeHtmlBuilder builder = new SafeHtmlBuilder();
 157                             render(object, builder);
 158                             return builder.toSafeHtml();
 159                                         }
 160
 161                                         @Override
 162                                         public void render(String object, SafeHtmlBuilder builder) {
 163                             String html = AbstractImagePrototype.create(OtherSharedTreeView.images.folderYellow()).getHTML();
 164                             builder.appendHtmlConstant(html);
 165                             builder.append(OtherSharedTreeView.Templates.INSTANCE.nameSpan(object));
 166                                         }
 167                                 }), selectionModel3, null);
 168                 }
 169                 else {
 170                         return new DefaultNodeInfo<Folder>(new ListDataProvider<Folder>(), folderCell, selectionModel, null);
 171                 }
 172         }
 173         else {
 174             final Folder f = (Folder) value;
 175             if (dataProviderMap.get(f) == null) {
 176                 dataProviderMap.put(f, new ListDataProvider<Folder>());
 177             }
 178             final ListDataProvider<Folder> dataProvider = dataProviderMap.get(f);
 179             fetchFolder(f, dataProvider, false);
 180             return new DefaultNodeInfo<Folder>(dataProvider, folderCell, selectionModel, null);
 181         }
 182     }
 183
 184     private void fetchSharingUsers(final ListDataProvider<String> dataProvider) {
 185         GetRequest<SharingUsers> getSharingUsers = new GetRequest<SharingUsers>(SharingUsers.class, app.getApiPath(), "", "?format=json") {
 186             @Override
 187             public void onSuccess(final SharingUsers result) {
 188                 dataProvider.getList().clear();
 189                 dataProvider.getList().addAll(result.getUsers());
 190 //                Iterator<Folder> iter = result.getSubfolders().iterator();
 191 //                fetchFolder(iter, new Command() {
 192 //                    @Override
 193 //                    public void execute() {
 194 //                        dataProvider.getList().clear();
 195 //                        dataProvider.getList().addAll(result.getSubfolders());
 196 //                    }
 197 //                });
 198             }
 199
 200             @Override
 201             public void onError(Throwable t) {
 202                 GWT.log("Error getting folder", t);
 203                 if (t instanceof RestException)
 204                     app.displayError("Error getting folder: " + ((RestException) t).getHttpStatusText());
 205                 else
 206                     app.displayError("System error fetching folder: " + t.getMessage());
 207             }
 208         };
 209         getSharingUsers.setHeader("X-Auth-Token", app.getToken());
 210         Scheduler.get().scheduleDeferred(getSharingUsers);
 211         }
 212
 213     private void fetchSharedFolders(final ListDataProvider<Folder> dataProvider) {
 214         Folder pithos = new Folder(Pithos.HOME_CONTAINER);
 215         pithos.setContainer(Pithos.HOME_CONTAINER);
 216         String path = "/" + pithos.getContainer()  + "?format=json&shared=";
 217         GetRequest<Folder> getFolder = new GetRequest<Folder>(Folder.class, app.getApiPath(), app.getUsername(), path, pithos) {
 218             @Override
 219             public void onSuccess(final Folder result) {
 220 //                if (showfiles)
 221 //                    app.showFiles(result);
 222                 Iterator<Folder> iter = result.getSubfolders().iterator();
 223                 fetchFolder(iter, new Command() {
 224                     @Override
 225                     public void execute() {
 226                         dataProvider.getList().clear();
 227                         dataProvider.getList().addAll(result.getSubfolders());
 228 //                        app.getMySharedTreeView().updateChildren(f);
 229                     }
 230                 });
 231             }
 232
 233             @Override
 234             public void onError(Throwable t) {
 235                 GWT.log("Error getting folder", t);
 236                 if (t instanceof RestException)
 237                     app.displayError("Error getting folder: " + ((RestException) t).getHttpStatusText());
 238                 else
 239                     app.displayError("System error fetching folder: " + t.getMessage());
 240             }
 241         };
 242         getFolder.setHeader("X-Auth-Token", app.getToken());
 243         Scheduler.get().scheduleDeferred(getFolder);
 244         }
 245
 246         @Override
 247     public boolean isLeaf(Object o) {
 248         if (o instanceof Folder) {
 249             Folder f = (Folder) o;
 250             return f.getSubfolders().isEmpty();
 251         }
 252         return false;
 253     }
 254
 255     protected void fetchFolder(final Iterator<Folder> iter, final Command callback) {
 256         if (iter.hasNext()) {
 257             final Folder f = iter.next();
 258
 259             String path = "/" + f.getContainer() + "?format=json&delimiter=/&prefix=" + f.getPrefix();
 260             GetRequest<Folder> getFolder = new GetRequest<Folder>(Folder.class, app.getApiPath(), app.getUsername(), path, f) {
 261                 @Override
 262                 public void onSuccess(Folder result) {
 263                     fetchFolder(iter, callback);
 264                 }
 265
 266                 @Override
 267                 public void onError(Throwable t) {
 268                     GWT.log("Error getting folder", t);
 269                     if (t instanceof RestException)
 270                         app.displayError("Error getting folder: " + ((RestException) t).getHttpStatusText());
 271                     else
 272                         app.displayError("System error fetching folder: " + t.getMessage());
 273                 }
 274             };
 275             getFolder.setHeader("X-Auth-Token", app.getToken());
 276             Scheduler.get().scheduleDeferred(getFolder);
 277         }
 278         else if (callback != null)
 279             callback.execute();
 280     }
 281
 282     public Folder getSelection() {
 283         return selectionModel.getSelectedObject();
 284     }
 285
 286     public void updateFolder(Folder folder, boolean showfiles) {
 287         if (dataProviderMap.get(folder) == null) {
 288             dataProviderMap.put(folder, new ListDataProvider<Folder>());
 289         }
 290         final ListDataProvider<Folder> dataProvider = dataProviderMap.get(folder);
 291         fetchFolder(folder, dataProvider, showfiles);
 292     }
 293
 294     public void fetchFolder(final Folder f, final ListDataProvider<Folder> dataProvider, final boolean showfiles) {
 295         String path = "/" + f.getContainer() + "?format=json&delimiter=/&prefix=" + f.getPrefix();
 296         GetRequest<Folder> getFolder = new GetRequest<Folder>(Folder.class, app.getApiPath(), app.getUsername(), path, f) {
 297             @Override
 298             public void onSuccess(final Folder result) {
 299                 if (showfiles)
 300                     app.showFiles(result);
 301                 Iterator<Folder> iter = result.getSubfolders().iterator();
 302                 fetchFolder(iter, new Command() {
 303                     @Override
 304                     public void execute() {
 305                         dataProvider.getList().clear();
 306                         dataProvider.getList().addAll(result.getSubfolders());
 307                         app.getOtherSharedTreeView().updateChildren(f);
 308                     }
 309                 });
 310             }
 311
 312             @Override
 313             public void onError(Throwable t) {
 314                 GWT.log("Error getting folder", t);
 315                 if (t instanceof RestException)
 316                     app.displayError("Error getting folder: " + ((RestException) t).getHttpStatusText());
 317                 else
 318                     app.displayError("System error fetching folder: " + t.getMessage());
 319             }
 320         };
 321         getFolder.setHeader("X-Auth-Token", app.getToken());
 322         Scheduler.get().scheduleDeferred(getFolder);
 323     }
 324 }