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.FolderPropertiesDialog;
  24 import gr.ebs.gss.client.GSS;
  25 import gr.ebs.gss.client.FileMenu.Images;
  26 import gr.ebs.gss.client.rest.GetCommand;
  27 import gr.ebs.gss.client.rest.HeadCommand;
  28 import gr.ebs.gss.client.rest.MultipleGetCommand;
  29 import gr.ebs.gss.client.rest.MultipleHeadCommand;
  30 import gr.ebs.gss.client.rest.RestException;
  31 import gr.ebs.gss.client.rest.resource.FileResource;
  32 import gr.ebs.gss.client.rest.resource.FolderResource;
  33 import gr.ebs.gss.client.rest.resource.GroupResource;
  34 import gr.ebs.gss.client.rest.resource.GroupsResource;
  35
  36 import java.util.ArrayList;
  37 import java.util.List;
  38
  39 import com.google.gwt.core.client.GWT;
  40 import com.google.gwt.user.client.Command;
  41 import com.google.gwt.user.client.DeferredCommand;
  42 import com.google.gwt.user.client.IncrementalCommand;
  43 import com.google.gwt.user.client.ui.PopupPanel;
  44
  45 /**
  46  * The command that displays the appropriate Properties dialog, according to the
  47  * selected object in the application.
  48  *
  49  * @author kman
  50  */
  51 public class PropertiesCommand implements Command {
  52
  53         final FileMenu.Images newImages;
  54
  55         private PopupPanel containerPanel;
  56
  57         private List<GroupResource> groups = null;
  58
  59         private List<FileResource> versions = null;
  60
  61         private int tabToShow = 0;
  62
  63         /**
  64          * @param _containerPanel
  65          * @param _newImages the images of all the possible delete dialogs
  66          * @param _tab the tab to switch to
  67          */
  68         public PropertiesCommand(PopupPanel _containerPanel, final FileMenu.Images _newImages, int _tab) {
  69                 containerPanel = _containerPanel;
  70                 newImages = _newImages;
  71                 tabToShow = _tab;
  72         }
  73
  74         public void execute() {
  75                 containerPanel.hide();
  76                 if (GSS.get().getCurrentSelection() instanceof FolderResource) {
  77                         GetCommand<FolderResource> eg = new GetCommand<FolderResource>(FolderResource.class, ((FolderResource) GSS.get().getCurrentSelection()).getUri()) {
  78
  79                                 @Override
  80                                 public void onComplete() {
  81                                         GSS.get().setCurrentSelection(getResult());
  82                                         initialize();
  83                                 }
  84
  85                                 @Override
  86                                 public void onError(Throwable t) {
  87
  88                                 }
  89
  90                         };
  91                         DeferredCommand.addCommand(eg);
  92                 }
  93                 else if (GSS.get().getCurrentSelection() instanceof FileResource) {
  94                         final String path = ((FileResource) GSS.get().getCurrentSelection()).getUri();
  95                         // Needed because firefox caches head requests.
  96                         HeadCommand<FileResource> eg = new HeadCommand<FileResource>(FileResource.class, path+"?"+Math.random() ) {
  97
  98                                 @Override
  99                                 public void onComplete() {
 100                                         FileResource res = getResult();
 101                                         res.setUri(path);
 102                                         GSS.get().setCurrentSelection(res);
 103                                         initialize();
 104                                 }
 105
 106                                 @Override
 107                                 public void onError(Throwable t) {
 108                                         if(t instanceof RestException)
 109                                                 GSS.get().displayError("Unable to retrieve file details:"+((RestException)t).getHttpStatusText());
 110                                 }
 111
 112                         };
 113                         DeferredCommand.addCommand(eg);
 114                 }
 115         }
 116
 117         private void initialize(){
 118                 getGroups();
 119                 getVersions();
 120                 DeferredCommand.addCommand(new IncrementalCommand() {
 121
 122                         public boolean execute() {
 123                                 boolean res = canContinue();
 124                                 if (res) {
 125                                         displayProperties(newImages);
 126                                         return false;
 127                                 }
 128                                 return true;
 129
 130                         }
 131
 132                 });
 133         }
 134
 135         private boolean canContinue() {
 136                 if (groups == null || versions == null)
 137                         return false;
 138                 return true;
 139         }
 140
 141         /**
 142          * Display the appropriate Properties dialog, according to the selected
 143          * object in the application.
 144          *
 145          * @param propImages the images of all the possible properties dialogs
 146          */
 147         void displayProperties(final Images propImages) {
 148                 if (GSS.get().getCurrentSelection() instanceof FolderResource) {
 149                         FolderPropertiesDialog dlg = new FolderPropertiesDialog(propImages, false, groups);
 150                         dlg.selectTab(tabToShow);
 151                         dlg.center();
 152                 } else if (GSS.get().getCurrentSelection() instanceof FileResource) {
 153                         FilePropertiesDialog dlg = new FilePropertiesDialog(propImages, groups, versions);
 154                         dlg.selectTab(tabToShow);
 155                         dlg.center();
 156                 }
 157         }
 158
 159         private void getGroups() {
 160                 GetCommand<GroupsResource> gg = new GetCommand<GroupsResource>(GroupsResource.class, GSS.get().getCurrentUserResource().getGroupsPath()) {
 161
 162                         @Override
 163                         public void onComplete() {
 164                                 GroupsResource res = getResult();
 165                                 MultipleGetCommand<GroupResource> ga = new MultipleGetCommand<GroupResource>(GroupResource.class, res.getGroupPaths().toArray(new String[] {})) {
 166
 167                                         @Override
 168                                         public void onComplete() {
 169                                                 List<GroupResource> groupList = getResult();
 170                                                 groups = groupList;
 171                                         }
 172
 173                                         @Override
 174                                         public void onError(Throwable t) {
 175                                                 GWT.log("", t);
 176                                                 GSS.get().displayError("Unable to fetch groups");
 177                                                 groups = new ArrayList<GroupResource>();
 178                                         }
 179
 180                                         @Override
 181                                         public void onError(String p, Throwable throwable) {
 182                                                 GWT.log("Path:" + p, throwable);
 183                                         }
 184                                 };
 185                                 DeferredCommand.addCommand(ga);
 186                         }
 187
 188                         @Override
 189                         public void onError(Throwable t) {
 190                                 GWT.log("", t);
 191                                 GSS.get().displayError("Unable to fetch groups");
 192                                 groups = new ArrayList<GroupResource>();
 193                         }
 194                 };
 195                 DeferredCommand.addCommand(gg);
 196         }
 197
 198         private void getVersions() {
 199                 if (GSS.get().getCurrentSelection() instanceof FileResource) {
 200                         FileResource afile = (FileResource) GSS.get().getCurrentSelection();
 201                         GWT.log("File is versioned:" + afile.isVersioned(), null);
 202                         if (afile.isVersioned()) {
 203                                 List<String> paths = new ArrayList<String>();
 204                                 for (int i = 1; i <= afile.getVersion(); i++)
 205                                         paths.add(afile.getUri() + "?version=" + i);
 206                                 MultipleHeadCommand<FileResource> gv = new MultipleHeadCommand<FileResource>(FileResource.class, paths.toArray(new String[] {})) {
 207
 208                                         @Override
 209                                         public void onComplete() {
 210                                                 versions = getResult();
 211                                         }
 212
 213                                         @Override
 214                                         public void onError(Throwable t) {
 215                                                 GWT.log("", t);
 216                                                 GSS.get().displayError("Unable to fetch versions");
 217                                                 versions = new ArrayList<FileResource>();
 218                                         }
 219
 220                                         @Override
 221                                         public void onError(String p, Throwable throwable) {
 222                                                 GWT.log("Path:" + p, throwable);
 223                                         }
 224                                 };
 225                                 DeferredCommand.addCommand(gv);
 226                         } else
 227                                 versions = new ArrayList<FileResource>();
 228                 } else
 229                         versions = new ArrayList<FileResource>();
 230         }
 231 }