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.rest.GetRequest;
  46 import gr.grnet.pithos.web.client.rest.RestException;
  47
  48 import java.util.ArrayList;
  49 import java.util.HashMap;
  50 import java.util.HashSet;
  51 import java.util.Iterator;
  52 import java.util.List;
  53 import java.util.Map;
  54 import java.util.Set;
  55
  56 import com.google.gwt.cell.client.AbstractCell;
  57 import com.google.gwt.cell.client.Cell;
  58 import com.google.gwt.cell.client.TextCell;
  59 import com.google.gwt.cell.client.ValueUpdater;
  60 import com.google.gwt.core.client.GWT;
  61 import com.google.gwt.core.client.Scheduler;
  62 import com.google.gwt.event.dom.client.ContextMenuEvent;
  63 import com.google.gwt.http.client.Response;
  64 import com.google.gwt.http.client.URL;
  65 import com.google.gwt.safehtml.shared.SafeHtml;
  66 import com.google.gwt.safehtml.shared.SafeHtmlBuilder;
  67 import com.google.gwt.text.shared.SafeHtmlRenderer;
  68 import com.google.gwt.user.client.Command;
  69 import com.google.gwt.user.client.ui.AbstractImagePrototype;
  70 import com.google.gwt.view.client.ListDataProvider;
  71 import com.google.gwt.view.client.SelectionChangeEvent;
  72 import com.google.gwt.view.client.SelectionChangeEvent.Handler;
  73 import com.google.gwt.view.client.SingleSelectionModel;
  74 import com.google.gwt.view.client.TreeViewModel;
  75
  76 public class MysharedTreeViewModel implements TreeViewModel {
  77
  78     protected Pithos app;
  79
  80     private Cell<Folder> folderCell = new AbstractCell<Folder>() {
  81
  82        @Override
  83         public void render(Context context, Folder folder, SafeHtmlBuilder safeHtmlBuilder) {
  84             String html = AbstractImagePrototype.create(MysharedTreeView.images.folderYellow()).getHTML();
  85             safeHtmlBuilder.appendHtmlConstant(html).appendHtmlConstant("&nbsp;");
  86             safeHtmlBuilder.append(Templates.INSTANCE.nameSpan(folder.getName()));
  87         }
  88     };
  89
  90     protected ListDataProvider<Folder> firstLevelDataProvider = new ListDataProvider<Folder>();
  91
  92     protected SingleSelectionModel<Folder> selectionModel;
  93
  94     public MysharedTreeViewModel(Pithos _app, SingleSelectionModel<Folder> selectionModel) {
  95         app = _app;
  96         this.selectionModel = selectionModel;
  97     }
  98
  99     @Override
 100     public <T> NodeInfo<?> getNodeInfo(T value) {
 101         if (value == null) {
 102                 fetchSharedContainers(null);
 103             return new DefaultNodeInfo<Folder>(firstLevelDataProvider, folderCell, selectionModel, null);
 104         }
 105         return null;
 106     }
 107
 108         private void fetchSharedContainers(final Command callback) {
 109         String path = "?format=json&shared=";
 110         GetRequest<AccountResource> getAccount = new GetRequest<AccountResource>(AccountResource.class, app.getApiPath(), app.getUsername(), path) {
 111             @Override
 112             public void onSuccess(final AccountResource _result) {
 113                                 firstLevelDataProvider.getList().clear();
 114                 Folder t = null;
 115                 for (Folder c : _result.getContainers()) {
 116                         if (c.isHome())
 117                                 firstLevelDataProvider.getList().add(0, c); //Pithos is always first
 118                         else if (!c.isTrash())
 119                                 firstLevelDataProvider.getList().add(c);
 120                 }
 121                                 if (callback != null)
 122                                         callback.execute();
 123             }
 124
 125             @Override
 126             public void onError(Throwable t) {
 127                 GWT.log("Error getting account", t);
 128                                 app.setError(t);
 129                 if (t instanceof RestException)
 130                     app.displayError("Error getting account: " + ((RestException) t).getHttpStatusText());
 131                 else
 132                     app.displayError("System error fetching user data: " + t.getMessage());
 133             }
 134
 135                         @Override
 136                         protected void onUnauthorized(Response response) {
 137                                 app.sessionExpired();
 138                         }
 139         };
 140         getAccount.setHeader("X-Auth-Token", app.getToken());
 141         Scheduler.get().scheduleDeferred(getAccount);
 142         }
 143
 144         @Override
 145     public boolean isLeaf(Object o) {
 146                 if (o == null)
 147                         return false;
 148                 return true;
 149     }
 150
 151         private native void log(String msg) /*-{
 152                 $wnd.console.log(msg);
 153         }-*/;
 154
 155     protected void fetchFolder(final Iterator<Folder> iter, final Command callback) {
 156         if (iter.hasNext()) {
 157             final Folder f = iter.next();
 158
 159             String path = "/" + f.getContainer() + "?format=json&shared=&delimiter=/&prefix=" + URL.encodeQueryString(f.getPrefix());
 160             GetRequest<Folder> getFolder = new GetRequest<Folder>(Folder.class, app.getApiPath(), f.getOwner(), path, f) {
 161                 @Override
 162                 public void onSuccess(Folder _result) {
 163                     fetchFolder(iter, callback);
 164                 }
 165
 166                 @Override
 167                 public void onError(Throwable t) {
 168                     GWT.log("Error getting folder", t);
 169                                         app.setError(t);
 170                     if (t instanceof RestException)
 171                         app.displayError("Error getting folder: " + ((RestException) t).getHttpStatusText());
 172                     else
 173                         app.displayError("System error fetching folder: " + t.getMessage());
 174                 }
 175
 176                                 @Override
 177                                 protected void onUnauthorized(Response response) {
 178                                         app.sessionExpired();
 179                                 }
 180             };
 181             getFolder.setHeader("X-Auth-Token", app.getToken());
 182             Scheduler.get().scheduleDeferred(getFolder);
 183         }
 184         else if (callback != null)
 185             callback.execute();
 186     }
 187
 188     public Folder getSelection() {
 189         return selectionModel.getSelectedObject();
 190     }
 191
 192     public void updateFolder(Folder folder, boolean showfiles) {
 193         fetchFolder(folder,showfiles);
 194     }
 195
 196     public void fetchFolder(final Folder f, final boolean showfiles) {
 197         String path = "/" + f.getContainer() + "?format=json&shared=" + URL.encodeQueryString(f.getPrefix());
 198         GetRequest<Folder> getFolder = new GetRequest<Folder>(Folder.class, app.getApiPath(), f.getOwner(), path, null) {
 199             @Override
 200             public void onSuccess(final Folder _result) {
 201                 if (showfiles)
 202                     app.showFiles(_result);
 203             }
 204
 205             @Override
 206             public void onError(Throwable t) {
 207                 GWT.log("Error getting folder", t);
 208                                 app.setError(t);
 209                 if (t instanceof RestException)
 210                     app.displayError("Error getting folder: " + ((RestException) t).getHttpStatusText());
 211                 else
 212                     app.displayError("System error fetching folder: " + t.getMessage());
 213             }
 214
 215                         @Override
 216                         protected void onUnauthorized(Response response) {
 217                                 app.sessionExpired();
 218                         }
 219         };
 220         getFolder.setHeader("X-Auth-Token", app.getToken());
 221         Scheduler.get().scheduleDeferred(getFolder);
 222     }
 223
 224         public void initialize(Command callback) {
 225                 fetchSharedContainers(callback);
 226         }
 227 }