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