code.grnet.gr Git - pithos/blob - src/gr/ebs/gss/client/commands/PropertiesCommand.java

   1 /*
   2  * Copyright 2008, 2009 Electronic Business Systems Ltd.
   3  *
   4  * This file is part of GSS.
   5  *
   6  * GSS is free software: you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation, either version 3 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * GSS is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with GSS.  If not, see <http://www.gnu.org/licenses/>.
  18  */
  19 package gr.ebs.gss.client.commands;
  20
  21 import gr.ebs.gss.client.FileMenu;
  22 import gr.ebs.gss.client.FilePropertiesDialog;
  23 import gr.ebs.gss.client.FilesPropertiesDialog;
  24 import gr.ebs.gss.client.FolderPropertiesDialog;
  25 import gr.ebs.gss.client.GSS;
  26 import gr.ebs.gss.client.FileMenu.Images;
  27 import gr.ebs.gss.client.rest.GetCommand;
  28 import gr.ebs.gss.client.rest.HeadCommand;
  29 import gr.ebs.gss.client.rest.MultipleGetCommand;
  30 import gr.ebs.gss.client.rest.MultipleHeadCommand;
  31 import gr.ebs.gss.client.rest.RestException;
  32 import gr.ebs.gss.client.rest.MultipleGetCommand.Cached;
  33 import gr.ebs.gss.client.rest.resource.FileResource;
  34 import gr.ebs.gss.client.rest.resource.FolderResource;
  35 import gr.ebs.gss.client.rest.resource.GroupResource;
  36 import gr.ebs.gss.client.rest.resource.GroupsResource;
  37 import gr.ebs.gss.client.rest.resource.UserResource;
  38 import gr.ebs.gss.client.rest.resource.UserSearchResource;
  39
  40 import java.util.ArrayList;
  41 import java.util.List;
  42
  43 import com.google.gwt.core.client.GWT;
  44 import com.google.gwt.user.client.Command;
  45 import com.google.gwt.user.client.DeferredCommand;
  46 import com.google.gwt.user.client.IncrementalCommand;
  47 import com.google.gwt.user.client.ui.PopupPanel;
  48
  49 /**
  50  * The command that displays the appropriate Properties dialog, according to the
  51  * selected object in the application.
  52  *
  53  * @author kman
  54  */
  55 public class PropertiesCommand implements Command {
  56
  57         final FileMenu.Images newImages;
  58
  59         private PopupPanel containerPanel;
  60
  61         private List<GroupResource> groups = null;
  62
  63         private List<FileResource> versions = null;
  64
  65         private int tabToShow = 0;
  66
  67         private String userName;
  68
  69         private boolean isFile = false;
  70
  71         /**
  72          * @param _containerPanel
  73          * @param _newImages the images of all the possible delete dialogs
  74          * @param _tab the tab to switch to
  75          */
  76         public PropertiesCommand(PopupPanel _containerPanel, final FileMenu.Images _newImages, int _tab) {
  77                 containerPanel = _containerPanel;
  78                 newImages = _newImages;
  79                 tabToShow = _tab;
  80         }
  81
  82         @Override
  83         public void execute() {
  84                 containerPanel.hide();
  85                 if (GSS.get().getCurrentSelection() instanceof FolderResource) {
  86                         GetCommand<FolderResource> eg = new GetCommand<FolderResource>(FolderResource.class, ((FolderResource) GSS.get().getCurrentSelection()).getUri(),((FolderResource) GSS.get().getCurrentSelection())) {
  87
  88                                 @Override
  89                                 public void onComplete() {
  90                                         GSS.get().setCurrentSelection(getResult());
  91                                         initialize();
  92                                 }
  93
  94                                 @Override
  95                                 public void onError(Throwable t) {
  96
  97                                 }
  98
  99                         };
 100                         DeferredCommand.addCommand(eg);
 101                 }
 102                 else if (GSS.get().getCurrentSelection() instanceof FileResource) {
 103                         final String path = ((FileResource) GSS.get().getCurrentSelection()).getUri();
 104                         // Needed because firefox caches head requests.
 105                         HeadCommand<FileResource> eg = new HeadCommand<FileResource>(FileResource.class, path+"?"+Math.random(), null ) {
 106
 107                                 @Override
 108                                 public void onComplete() {
 109                                         FileResource res = getResult();
 110                                         GSS.get().setCurrentSelection(res);
 111                                         initialize();
 112                                 }
 113
 114                                 @Override
 115                                 public void onError(Throwable t) {
 116                                         if(t instanceof RestException)
 117                                                 GSS.get().displayError("Unable to retrieve file details:"+((RestException)t).getHttpStatusText());
 118                                 }
 119
 120                         };
 121                         DeferredCommand.addCommand(eg);
 122                 }
 123                 else if (GSS.get().getCurrentSelection() instanceof List) {
 124                         List<String> paths = new ArrayList<String>();
 125                         for (FileResource fr : (List<FileResource>) GSS.get().getCurrentSelection())
 126                                 paths.add(fr.getUri()+"?"+Math.random());
 127                         Cached[] cached = new Cached[paths.size()];
 128                         int i=0;
 129                         for (FileResource fr : (List<FileResource>) GSS.get().getCurrentSelection()){
 130                                 Cached c = new Cached();
 131                                 c.uri=fr.getUri()+"?"+Math.random();
 132                                 c.cache=fr;
 133                                 cached[i]=c;
 134                                 i++;
 135                         }
 136                         MultipleHeadCommand<FileResource> gv = new MultipleHeadCommand<FileResource>(FileResource.class, paths.toArray(new String[] {}),cached) {
 137
 138                                 @Override
 139                                 public void onComplete() {
 140                                         List<FileResource> res = getResult();
 141                                         GSS.get().setCurrentSelection(res);
 142                                         FilesPropertiesDialog dlg = new FilesPropertiesDialog(res);
 143                                         dlg.selectTab(tabToShow);
 144                                         dlg.center();
 145                                 }
 146
 147                                 @Override
 148                                 public void onError(Throwable t) {
 149                                         GWT.log("", t);
 150                                         GSS.get().displayError("Unable to fetch files details");
 151                                 }
 152
 153                                 @Override
 154                                 public void onError(String p, Throwable throwable) {
 155                                         GWT.log("Path:" + p, throwable);
 156                                 }
 157                         };
 158                         DeferredCommand.addCommand(gv);
 159                 }
 160         }
 161
 162         private void initialize(){
 163                 getGroups();
 164                 getVersions();
 165                 getOwnerFullName();
 166                 DeferredCommand.addCommand(new IncrementalCommand() {
 167
 168                         @Override
 169                         public boolean execute() {
 170                                 boolean res = canContinue();
 171                                 if (res) {
 172                                         displayProperties(newImages, GSS.get().findUserFullName(userName));
 173                                         return false;
 174                                 }
 175                                 return true;
 176                         }
 177
 178                 });
 179
 180         }
 181
 182         private boolean canContinue() {
 183                 String userFullNameFromMap = GSS.get().findUserFullName(userName);
 184                 if(groups == null || versions == null || isFile && userFullNameFromMap == null)
 185                         return false;
 186                 return true;
 187         }
 188
 189         /**
 190          * Display the appropriate Properties dialog, according to the selected
 191          * object in the application.
 192          *
 193          * @param propImages the images of all the possible properties dialogs
 194          */
 195         void displayProperties(final Images propImages, final String _userName) {
 196                 if (GSS.get().getCurrentSelection() instanceof FolderResource) {
 197                         FolderPropertiesDialog dlg = new FolderPropertiesDialog(propImages, false, groups);
 198                         dlg.selectTab(tabToShow);
 199                         dlg.center();
 200                 } else if (GSS.get().getCurrentSelection() instanceof FileResource) {
 201                         FilePropertiesDialog dlg = new FilePropertiesDialog(propImages, groups, versions, _userName);
 202                         dlg.selectTab(tabToShow);
 203                         dlg.center();
 204                 }
 205         }
 206
 207         private void getGroups() {
 208                 GetCommand<GroupsResource> gg = new GetCommand<GroupsResource>(GroupsResource.class, GSS.get().getCurrentUserResource().getGroupsPath(), null) {
 209
 210                         @Override
 211                         public void onComplete() {
 212                                 GroupsResource res = getResult();
 213                                 MultipleGetCommand<GroupResource> ga = new MultipleGetCommand<GroupResource>(GroupResource.class, res.getGroupPaths().toArray(new String[] {}), null) {
 214
 215                                         @Override
 216                                         public void onComplete() {
 217                                                 List<GroupResource> groupList = getResult();
 218                                                 groups = groupList;
 219                                         }
 220
 221                                         @Override
 222                                         public void onError(Throwable t) {
 223                                                 GWT.log("", t);
 224                                                 GSS.get().displayError("Unable to fetch groups");
 225                                                 groups = new ArrayList<GroupResource>();
 226                                         }
 227
 228                                         @Override
 229                                         public void onError(String p, Throwable throwable) {
 230                                                 GWT.log("Path:" + p, throwable);
 231                                         }
 232                                 };
 233                                 DeferredCommand.addCommand(ga);
 234                         }
 235
 236                         @Override
 237                         public void onError(Throwable t) {
 238                                 GWT.log("", t);
 239                                 GSS.get().displayError("Unable to fetch groups");
 240                                 groups = new ArrayList<GroupResource>();
 241                         }
 242                 };
 243                 DeferredCommand.addCommand(gg);
 244         }
 245
 246         private void getVersions() {
 247                 if (GSS.get().getCurrentSelection() instanceof FileResource) {
 248                         FileResource afile = (FileResource) GSS.get().getCurrentSelection();
 249                         GWT.log("File is versioned:" + afile.isVersioned(), null);
 250                         if (afile.isVersioned()) {
 251                                 List<String> paths = new ArrayList<String>();
 252                                 for (int i = 1; i <= afile.getVersion(); i++)
 253                                         paths.add(afile.getUri() + "?version=" + i);
 254                                 MultipleHeadCommand<FileResource> gv = new MultipleHeadCommand<FileResource>(FileResource.class, paths.toArray(new String[] {}), null) {
 255
 256                                         @Override
 257                                         public void onComplete() {
 258                                                 versions = getResult();
 259                                         }
 260
 261                                         @Override
 262                                         public void onError(Throwable t) {
 263                                                 GWT.log("", t);
 264                                                 GSS.get().displayError("Unable to fetch versions");
 265                                                 versions = new ArrayList<FileResource>();
 266                                         }
 267
 268                                         @Override
 269                                         public void onError(String p, Throwable throwable) {
 270                                                 GWT.log("Path:" + p, throwable);
 271                                         }
 272                                 };
 273                                 DeferredCommand.addCommand(gv);
 274                         } else
 275                                 versions = new ArrayList<FileResource>();
 276                 } else
 277                         versions = new ArrayList<FileResource>();
 278         }
 279
 280         private void getOwnerFullName() {
 281                 if(GSS.get().getCurrentSelection() instanceof FileResource){
 282                         isFile = true;
 283                         FileResource fileResource = (FileResource) GSS.get().getCurrentSelection();
 284                         userName = fileResource.getOwner();
 285                         if(GSS.get().findUserFullName(userName) == null){
 286                                 GetUserCommand gu = new GetUserCommand(userName);
 287                                 gu.execute();
 288                         }
 289
 290                 }
 291         }
 292
 293
 294 }