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.foldertree.FolderTreeView;
  44 import gr.grnet.pithos.web.client.mysharedtree.MysharedTreeView.Templates;
  45 import gr.grnet.pithos.web.client.othersharedtree.OtherSharedTreeView;
  46 import gr.grnet.pithos.web.client.othersharedtree.OtherSharedTreeViewModel;
  47 import gr.grnet.pithos.web.client.rest.GetRequest;
  48 import gr.grnet.pithos.web.client.rest.RestException;
  49
  50 import java.util.ArrayList;
  51 import java.util.HashMap;
  52 import java.util.HashSet;
  53 import java.util.Iterator;
  54 import java.util.List;
  55 import java.util.Map;
  56 import java.util.Set;
  57
  58 import com.google.gwt.cell.client.AbstractCell;
  59 import com.google.gwt.cell.client.Cell;
  60 import com.google.gwt.cell.client.TextCell;
  61 import com.google.gwt.cell.client.ValueUpdater;
  62 import com.google.gwt.cell.client.Cell.Context;
  63 import com.google.gwt.core.client.GWT;
  64 import com.google.gwt.core.client.Scheduler;
  65 import com.google.gwt.event.dom.client.ContextMenuEvent;
  66 import com.google.gwt.http.client.Response;
  67 import com.google.gwt.http.client.URL;
  68 import com.google.gwt.safehtml.shared.SafeHtml;
  69 import com.google.gwt.safehtml.shared.SafeHtmlBuilder;
  70 import com.google.gwt.text.shared.SafeHtmlRenderer;
  71 import com.google.gwt.user.client.Command;
  72 import com.google.gwt.user.client.ui.AbstractImagePrototype;
  73 import com.google.gwt.view.client.ListDataProvider;
  74 import com.google.gwt.view.client.SelectionChangeEvent;
  75 import com.google.gwt.view.client.SelectionChangeEvent.Handler;
  76 import com.google.gwt.view.client.SingleSelectionModel;
  77 import com.google.gwt.view.client.TreeViewModel;
  78
  79 public class MysharedTreeViewModel implements TreeViewModel {
  80
  81     protected Pithos app;
  82
  83     Folder dummy = new Folder("No files shared by me");
  84
  85     private Cell<Folder> folderCell = new AbstractCell<Folder>(ContextMenuEvent.getType().getName()) {
  86
  87        @Override
  88         public void render(Context context, Folder folder, SafeHtmlBuilder safeHtmlBuilder) {
  89            if (!folder.equals(dummy)) {
  90                    String html = AbstractImagePrototype.create(MysharedTreeView.images.folderYellow()).getHTML();
  91                 safeHtmlBuilder.appendHtmlConstant(html).appendHtmlConstant("&nbsp;");
  92            }
  93             safeHtmlBuilder.append(Templates.INSTANCE.nameSpan(folder.getName()));
  94         }
  95
  96        @Override
  97        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) {
  98            if (event.getType().equals(ContextMenuEvent.getType().getName())) {
  99                 final int x = event.getClientX();
 100                 final int y = event.getClientY();
 101                MysharedTreeViewModel.this.selectionModel.setSelected(folder, true);
 102                app.scheduleFolderHeadCommand(folder, new Command() {
 103
 104                                         @Override
 105                                         public void execute() {
 106                                 FolderContextMenu menu = new FolderContextMenu(app, MysharedTreeView.images, app.getSelectedTree(), folder);
 107                                 menu.setPopupPosition(x, y);
 108                                 menu.show();
 109                                         }
 110                                 });
 111            }
 112        }
 113     };
 114
 115     protected ListDataProvider<Folder> firstLevelDataProvider = new ListDataProvider<Folder>();
 116
 117     protected SingleSelectionModel<Folder> selectionModel;
 118
 119     public MysharedTreeViewModel(Pithos _app, SingleSelectionModel<Folder> selectionModel) {
 120         app = _app;
 121         this.selectionModel = selectionModel;
 122     }
 123
 124     @Override
 125     public <T> NodeInfo<?> getNodeInfo(T value) {
 126         if (value == null) {
 127                 fetchSharedContainers(null);
 128                 if (firstLevelDataProvider.getList().get(0).equals(dummy))
 129                 return new DefaultNodeInfo<Folder>(firstLevelDataProvider, folderCell, null, null);
 130             return new DefaultNodeInfo<Folder>(firstLevelDataProvider, folderCell, selectionModel, null);
 131         }
 132         return null;
 133     }
 134
 135         private void fetchSharedContainers(final Command callback) {
 136         String path = "?format=json&shared=";
 137         GetRequest<AccountResource> getAccount = new GetRequest<AccountResource>(AccountResource.class, app.getApiPath(), app.getUsername(), path) {
 138             @Override
 139             public void onSuccess(final AccountResource _result) {
 140                                 firstLevelDataProvider.getList().clear();
 141                 for (Folder c : _result.getContainers()) {
 142                         if (c.isHome())
 143                                 firstLevelDataProvider.getList().add(0, c); //Pithos is always first
 144                         else if (!c.isTrash())
 145                                 firstLevelDataProvider.getList().add(c);
 146                 }
 147                 if (firstLevelDataProvider.getList().isEmpty())
 148                         firstLevelDataProvider.getList().add(dummy);
 149                                 if (callback != null)
 150                                         callback.execute();
 151             }
 152
 153             @Override
 154             public void onError(Throwable t) {
 155                 GWT.log("Error getting account", t);
 156                                 app.setError(t);
 157                 if (t instanceof RestException)
 158                     app.displayError("Error getting account: " + ((RestException) t).getHttpStatusText());
 159                 else
 160                     app.displayError("System error fetching user data: " + t.getMessage());
 161             }
 162
 163                         @Override
 164                         protected void onUnauthorized(Response response) {
 165                                 app.sessionExpired();
 166                         }
 167         };
 168         getAccount.setHeader("X-Auth-Token", app.getToken());
 169         Scheduler.get().scheduleDeferred(getAccount);
 170         }
 171
 172         @Override
 173     public boolean isLeaf(Object o) {
 174                 if (o == null)
 175                         return firstLevelDataProvider.getList().isEmpty();
 176                 return true;
 177     }
 178
 179         private native void log(String msg) /*-{
 180                 $wnd.console.log(msg);
 181         }-*/;
 182
 183     protected void fetchFolder(final Iterator<Folder> iter, final Command callback) {
 184         if (iter.hasNext()) {
 185             final Folder f = iter.next();
 186
 187             String path = "/" + f.getContainer() + "?format=json&shared=&delimiter=/&prefix=" + URL.encodeQueryString(f.getPrefix());
 188             GetRequest<Folder> getFolder = new GetRequest<Folder>(Folder.class, app.getApiPath(), f.getOwner(), path, f) {
 189                 @Override
 190                 public void onSuccess(Folder _result) {
 191                     fetchFolder(iter, callback);
 192                 }
 193
 194                 @Override
 195                 public void onError(Throwable t) {
 196                     GWT.log("Error getting folder", t);
 197                                         app.setError(t);
 198                     if (t instanceof RestException)
 199                         app.displayError("Error getting folder: " + ((RestException) t).getHttpStatusText());
 200                     else
 201                         app.displayError("System error fetching folder: " + t.getMessage());
 202                 }
 203
 204                                 @Override
 205                                 protected void onUnauthorized(Response response) {
 206                                         app.sessionExpired();
 207                                 }
 208             };
 209             getFolder.setHeader("X-Auth-Token", app.getToken());
 210             Scheduler.get().scheduleDeferred(getFolder);
 211         }
 212         else if (callback != null)
 213             callback.execute();
 214     }
 215
 216     public Folder getSelection() {
 217         return selectionModel.getSelectedObject();
 218     }
 219
 220     public void updateFolder(Folder folder, boolean showfiles, Command callback) {
 221         fetchFolder(folder, showfiles, callback);
 222     }
 223
 224     public void fetchFolder(final Folder f, final boolean showfiles, final Command callback) {
 225         String path = "/" + f.getContainer() + "?format=json&shared=" + URL.encodeQueryString(f.getPrefix());
 226         GetRequest<Folder> getFolder = new GetRequest<Folder>(Folder.class, app.getApiPath(), f.getOwner(), path, f) {
 227             @Override
 228             public void onSuccess(final Folder _result) {
 229                 for (File file : _result.getFiles()) {
 230                         String name = file.getName();
 231                                         if (name.lastIndexOf("/") != -1) {
 232                                                 file.setName(name.substring(name.lastIndexOf("/") + 1, name.length()));
 233                                         }
 234                 }
 235
 236                 if (showfiles)
 237                     app.showFiles(_result);
 238                 if (callback != null)
 239                         callback.execute();
 240             }
 241
 242             @Override
 243             public void onError(Throwable t) {
 244                 GWT.log("Error getting folder", t);
 245                                 app.setError(t);
 246                 if (t instanceof RestException)
 247                     app.displayError("Error getting folder: " + ((RestException) t).getHttpStatusText());
 248                 else
 249                     app.displayError("System error fetching folder: " + t.getMessage());
 250             }
 251
 252                         @Override
 253                         protected void onUnauthorized(Response response) {
 254                                 app.sessionExpired();
 255                         }
 256         };
 257         getFolder.setHeader("X-Auth-Token", app.getToken());
 258         Scheduler.get().scheduleDeferred(getFolder);
 259     }
 260
 261         public void initialize(Command callback) {
 262                 fetchSharedContainers(callback);
 263         }
 264 }