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.FileMenu.Images;
  23 import gr.ebs.gss.client.FilePropertiesDialog;
  24 import gr.ebs.gss.client.FilesPropertiesDialog;
  25 import gr.ebs.gss.client.FolderPropertiesDialog;
  26 import gr.ebs.gss.client.GSS;
  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.MultipleGetCommand.Cached;
  31 import gr.ebs.gss.client.rest.MultipleHeadCommand;
  32 import gr.ebs.gss.client.rest.RestException;
  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
  38 import java.util.ArrayList;
  39 import java.util.List;
  40
  41 import com.google.gwt.core.client.GWT;
  42 import com.google.gwt.user.client.Command;
  43 import com.google.gwt.user.client.DeferredCommand;
  44 import com.google.gwt.user.client.IncrementalCommand;
  45 import com.google.gwt.user.client.ui.PopupPanel;
  46
  47 /**
  48  * The command that displays the appropriate Properties dialog, according to the
  49  * selected object in the application.
  50  *
  51  * @author kman
  52  */
  53 public class PropertiesCommand implements Command {
  54
  55         final FileMenu.Images newImages;
  56
  57         private PopupPanel containerPanel;
  58
  59         private List<GroupResource> groups = null;
  60
  61         private List<FileResource> versions = null;
  62
  63         private int tabToShow = 0;
  64
  65         /**
  66          * @param _containerPanel
  67          * @param _newImages the images of all the possible delete dialogs
  68          * @param _tab the tab to switch to
  69          */
  70         public PropertiesCommand(PopupPanel _containerPanel, final FileMenu.Images _newImages, int _tab) {
  71                 containerPanel = _containerPanel;
  72                 newImages = _newImages;
  73                 tabToShow = _tab;
  74         }
  75
  76         @Override
  77         public void execute() {
  78                 containerPanel.hide();
  79                 if (GSS.get().getCurrentSelection() instanceof FolderResource) {
  80                         GetCommand<FolderResource> eg = new GetCommand<FolderResource>(FolderResource.class, ((FolderResource) GSS.get().getCurrentSelection()).getUri(),((FolderResource) GSS.get().getCurrentSelection())) {
  81
  82                                 @Override
  83                                 public void onComplete() {
  84                                         GSS.get().setCurrentSelection(getResult());
  85                                         initialize();
  86                                 }
  87
  88                                 @Override
  89                                 public void onError(Throwable t) {
  90
  91                                 }
  92
  93                         };
  94                         DeferredCommand.addCommand(eg);
  95                 }
  96                 else if (GSS.get().getCurrentSelection() instanceof FileResource) {
  97                         final String path = ((FileResource) GSS.get().getCurrentSelection()).getUri();
  98                         // Needed because firefox caches head requests.
  99                         HeadCommand<FileResource> eg = new HeadCommand<FileResource>(FileResource.class, path+"?"+Math.random(), null ) {
 100
 101                                 @Override
 102                                 public void onComplete() {
 103                                         FileResource res = getResult();
 104                                         GSS.get().setCurrentSelection(res);
 105                                         initialize();
 106                                 }
 107
 108                                 @Override
 109                                 public void onError(Throwable t) {
 110                                         if(t instanceof RestException)
 111                                                 GSS.get().displayError("Unable to retrieve file details:"+((RestException)t).getHttpStatusText());
 112                                 }
 113
 114                         };
 115                         DeferredCommand.addCommand(eg);
 116                 }
 117                 else if (GSS.get().getCurrentSelection() instanceof List) {
 118                         List<String> paths = new ArrayList<String>();
 119                         for (FileResource fr : (List<FileResource>) GSS.get().getCurrentSelection())
 120                                 paths.add(fr.getUri()+"?"+Math.random());
 121                         Cached[] cached = new Cached[paths.size()];
 122                         int i=0;
 123                         for (FileResource fr : (List<FileResource>) GSS.get().getCurrentSelection()){
 124                                 Cached c = new Cached();
 125                                 c.uri=fr.getUri()+"?"+Math.random();
 126                                 c.cache=fr;
 127                                 cached[i]=c;
 128                                 i++;
 129                         }
 130                         MultipleHeadCommand<FileResource> gv = new MultipleHeadCommand<FileResource>(FileResource.class, paths.toArray(new String[] {}),cached) {
 131
 132                                 @Override
 133                                 public void onComplete() {
 134                                         List<FileResource> res = getResult();
 135                                         GSS.get().setCurrentSelection(res);
 136                                         FilesPropertiesDialog dlg = new FilesPropertiesDialog(res);
 137                                         dlg.selectTab(tabToShow);
 138                                         dlg.center();
 139                                 }
 140
 141                                 @Override
 142                                 public void onError(Throwable t) {
 143                                         GWT.log("", t);
 144                                         GSS.get().displayError("Unable to fetch files details");
 145                                 }
 146
 147                                 @Override
 148                                 public void onError(String p, Throwable throwable) {
 149                                         GWT.log("Path:" + p, throwable);
 150                                 }
 151                         };
 152                         DeferredCommand.addCommand(gv);
 153                 }
 154         }
 155
 156         private void initialize(){
 157                 getGroups();
 158                 getVersions();
 159                 DeferredCommand.addCommand(new IncrementalCommand() {
 160
 161                         @Override
 162                         public boolean execute() {
 163                                 boolean res = canContinue();
 164                                 if (res) {
 165                                         displayProperties(newImages);
 166                                         return false;
 167                                 }
 168                                 return true;
 169
 170                         }
 171
 172                 });
 173         }
 174
 175         private boolean canContinue() {
 176                 if (groups == null || versions == null)
 177                         return false;
 178                 return true;
 179         }
 180
 181         /**
 182          * Display the appropriate Properties dialog, according to the selected
 183          * object in the application.
 184          *
 185          * @param propImages the images of all the possible properties dialogs
 186          */
 187         void displayProperties(final Images propImages) {
 188                 if (GSS.get().getCurrentSelection() instanceof FolderResource) {
 189                         FolderPropertiesDialog dlg = new FolderPropertiesDialog(propImages, false, groups);
 190                         dlg.selectTab(tabToShow);
 191                         dlg.center();
 192                 } else if (GSS.get().getCurrentSelection() instanceof FileResource) {
 193                         FilePropertiesDialog dlg = new FilePropertiesDialog(propImages, groups, versions);
 194                         dlg.selectTab(tabToShow);
 195                         dlg.center();
 196                 }
 197         }
 198
 199         private void getGroups() {
 200                 GetCommand<GroupsResource> gg = new GetCommand<GroupsResource>(GroupsResource.class, GSS.get().getCurrentUserResource().getGroupsPath(), null) {
 201
 202                         @Override
 203                         public void onComplete() {
 204                                 GroupsResource res = getResult();
 205                                 MultipleGetCommand<GroupResource> ga = new MultipleGetCommand<GroupResource>(GroupResource.class, res.getGroupPaths().toArray(new String[] {}), null) {
 206
 207                                         @Override
 208                                         public void onComplete() {
 209                                                 List<GroupResource> groupList = getResult();
 210                                                 groups = groupList;
 211                                         }
 212
 213                                         @Override
 214                                         public void onError(Throwable t) {
 215                                                 GWT.log("", t);
 216                                                 GSS.get().displayError("Unable to fetch groups");
 217                                                 groups = new ArrayList<GroupResource>();
 218                                         }
 219
 220                                         @Override
 221                                         public void onError(String p, Throwable throwable) {
 222                                                 GWT.log("Path:" + p, throwable);
 223                                         }
 224                                 };
 225                                 DeferredCommand.addCommand(ga);
 226                         }
 227
 228                         @Override
 229                         public void onError(Throwable t) {
 230                                 GWT.log("", t);
 231                                 GSS.get().displayError("Unable to fetch groups");
 232                                 groups = new ArrayList<GroupResource>();
 233                         }
 234                 };
 235                 DeferredCommand.addCommand(gg);
 236         }
 237
 238         private void getVersions() {
 239                 if (GSS.get().getCurrentSelection() instanceof FileResource) {
 240                         FileResource afile = (FileResource) GSS.get().getCurrentSelection();
 241                         GWT.log("File is versioned:" + afile.isVersioned(), null);
 242                         if (afile.isVersioned()) {
 243                                 List<String> paths = new ArrayList<String>();
 244                                 for (int i = 1; i <= afile.getVersion(); i++)
 245                                         paths.add(afile.getUri() + "?version=" + i);
 246                                 MultipleHeadCommand<FileResource> gv = new MultipleHeadCommand<FileResource>(FileResource.class, paths.toArray(new String[] {}), null) {
 247
 248                                         @Override
 249                                         public void onComplete() {
 250                                                 versions = getResult();
 251                                         }
 252
 253                                         @Override
 254                                         public void onError(Throwable t) {
 255                                                 GWT.log("", t);
 256                                                 GSS.get().displayError("Unable to fetch versions");
 257                                                 versions = new ArrayList<FileResource>();
 258                                         }
 259
 260                                         @Override
 261                                         public void onError(String p, Throwable throwable) {
 262                                                 GWT.log("Path:" + p, throwable);
 263                                         }
 264                                 };
 265                                 DeferredCommand.addCommand(gv);
 266                         } else
 267                                 versions = new ArrayList<FileResource>();
 268                 } else
 269                         versions = new ArrayList<FileResource>();
 270         }
 271 }