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