code.grnet.gr Git - pithos/blob - web_client/src/gr/grnet/pithos/web/client/commands/PropertiesCommand.java

   1 /*
   2  *  Copyright (c) 2011 Greek Research and Technology Network
   3  */
   4 package gr.grnet.pithos.web.client.commands;
   5
   6 import gr.grnet.pithos.web.client.FileMenu;
   7 import gr.grnet.pithos.web.client.FilePropertiesDialog;
   8 import gr.grnet.pithos.web.client.FilesPropertiesDialog;
   9 import gr.grnet.pithos.web.client.FolderPropertiesDialog;
  10 import gr.grnet.pithos.web.client.GSS;
  11 import gr.grnet.pithos.web.client.FileMenu.Images;
  12 import gr.grnet.pithos.web.client.rest.GetCommand;
  13 import gr.grnet.pithos.web.client.rest.HeadCommand;
  14 import gr.grnet.pithos.web.client.rest.MultipleGetCommand;
  15 import gr.grnet.pithos.web.client.rest.MultipleHeadCommand;
  16 import gr.grnet.pithos.web.client.rest.RestException;
  17 import gr.grnet.pithos.web.client.rest.MultipleGetCommand.Cached;
  18 import gr.grnet.pithos.web.client.rest.resource.FileResource;
  19 import gr.grnet.pithos.web.client.rest.resource.FolderResource;
  20 import gr.grnet.pithos.web.client.rest.resource.GroupResource;
  21 import gr.grnet.pithos.web.client.rest.resource.GroupsResource;
  22 import gr.grnet.pithos.web.client.rest.resource.RestResourceWrapper;
  23
  24 import java.util.ArrayList;
  25 import java.util.List;
  26
  27 import com.google.gwt.core.client.GWT;
  28 import com.google.gwt.user.client.Command;
  29 import com.google.gwt.user.client.DeferredCommand;
  30 import com.google.gwt.user.client.IncrementalCommand;
  31 import com.google.gwt.user.client.ui.PopupPanel;
  32
  33 /**
  34  * The command that displays the appropriate Properties dialog, according to the
  35  * selected object in the application.
  36  *
  37  */
  38 public class PropertiesCommand implements Command {
  39
  40         final FileMenu.Images newImages;
  41
  42         private PopupPanel containerPanel;
  43
  44         private List<GroupResource> groups = null;
  45
  46         private List<FileResource> versions = null;
  47
  48         private int tabToShow = 0;
  49
  50         private String userName;
  51
  52         /**
  53          * @param _containerPanel
  54          * @param _newImages the images of all the possible delete dialogs
  55          * @param _tab the tab to switch to
  56          */
  57         public PropertiesCommand(PopupPanel _containerPanel, final FileMenu.Images _newImages, int _tab) {
  58                 containerPanel = _containerPanel;
  59                 newImages = _newImages;
  60                 tabToShow = _tab;
  61         }
  62
  63         @Override
  64         public void execute() {
  65                 containerPanel.hide();
  66                 if (GSS.get().getCurrentSelection() instanceof RestResourceWrapper) {
  67                         GetCommand<FolderResource> eg = new GetCommand<FolderResource>(FolderResource.class, ((RestResourceWrapper) GSS.get().getCurrentSelection()).getUri(),((RestResourceWrapper) GSS.get().getCurrentSelection()).getResource()) {
  68
  69                                 @Override
  70                                 public void onComplete() {
  71                                         ((RestResourceWrapper) GSS.get().getCurrentSelection()).setResource(getResult());
  72                                         initialize();
  73                                 }
  74
  75                                 @Override
  76                                 public void onError(Throwable t) {
  77
  78                                 }
  79
  80                         };
  81                         DeferredCommand.addCommand(eg);
  82                 }
  83                 else if (GSS.get().getCurrentSelection() instanceof FileResource) {
  84                         final String path = ((FileResource) GSS.get().getCurrentSelection()).getUri();
  85                         // Needed because firefox caches head requests.
  86                         HeadCommand<FileResource> eg = new HeadCommand<FileResource>(FileResource.class, path+"?"+Math.random(), null ) {
  87
  88                                 @Override
  89                                 public void onComplete() {
  90                                         FileResource res = getResult();
  91                                         GSS.get().setCurrentSelection(res);
  92                                         initialize();
  93                                 }
  94
  95                                 @Override
  96                                 public void onError(Throwable t) {
  97                                         if(t instanceof RestException)
  98                                                 GSS.get().displayError("Unable to retrieve file details:"+((RestException)t).getHttpStatusText());
  99                                 }
 100
 101                         };
 102                         DeferredCommand.addCommand(eg);
 103                 }
 104                 else if (GSS.get().getCurrentSelection() instanceof List) {
 105                         List<String> paths = new ArrayList<String>();
 106                         for (FileResource fr : (List<FileResource>) GSS.get().getCurrentSelection())
 107                                 paths.add(fr.getUri()+"?"+Math.random());
 108                         Cached[] cached = new Cached[paths.size()];
 109                         int i=0;
 110                         for (FileResource fr : (List<FileResource>) GSS.get().getCurrentSelection()){
 111                                 Cached c = new Cached();
 112                                 c.uri=fr.getUri()+"?"+Math.random();
 113                                 c.cache=fr;
 114                                 cached[i]=c;
 115                                 i++;
 116                         }
 117                         MultipleHeadCommand<FileResource> gv = new MultipleHeadCommand<FileResource>(FileResource.class, paths.toArray(new String[] {}),cached) {
 118
 119                                 @Override
 120                                 public void onComplete() {
 121                                         List<FileResource> res = getResult();
 122                                         GSS.get().setCurrentSelection(res);
 123                                         FilesPropertiesDialog dlg = new FilesPropertiesDialog(res);
 124                                         dlg.selectTab(tabToShow);
 125                                         dlg.center();
 126                                 }
 127
 128                                 @Override
 129                                 public void onError(Throwable t) {
 130                                         GWT.log("", t);
 131                                         GSS.get().displayError("Unable to fetch files details");
 132                                 }
 133
 134                                 @Override
 135                                 public void onError(String p, Throwable throwable) {
 136                                         GWT.log("Path:" + p, throwable);
 137                                 }
 138                         };
 139                         DeferredCommand.addCommand(gv);
 140                 }
 141         }
 142
 143         private void initialize(){
 144                 getGroups();
 145                 getVersions();
 146                 getOwnerFullName();
 147                 DeferredCommand.addCommand(new IncrementalCommand() {
 148
 149                         @Override
 150                         public boolean execute() {
 151                                 boolean res = canContinue();
 152                                 if (res) {
 153                                         displayProperties(newImages, GSS.get().findUserFullName(userName));
 154                                         return false;
 155                                 }
 156                                 return true;
 157                         }
 158
 159                 });
 160
 161         }
 162
 163         private boolean canContinue() {
 164                 String userFullNameFromMap = GSS.get().findUserFullName(userName);
 165                 if(groups == null || versions == null || userFullNameFromMap == null)
 166                         return false;
 167                 return true;
 168         }
 169
 170         /**
 171          * Display the appropriate Properties dialog, according to the selected
 172          * object in the application.
 173          *
 174          * @param propImages the images of all the possible properties dialogs
 175          */
 176         void displayProperties(final Images propImages, final String _userName) {
 177                 if (GSS.get().getCurrentSelection() instanceof RestResourceWrapper) {
 178                         FolderPropertiesDialog dlg = new FolderPropertiesDialog(propImages, false, groups);
 179                         dlg.selectTab(tabToShow);
 180                         dlg.center();
 181                 } else if (GSS.get().getCurrentSelection() instanceof FileResource) {
 182                         FilePropertiesDialog dlg = new FilePropertiesDialog(propImages, groups, versions, _userName);
 183                         dlg.selectTab(tabToShow);
 184                         dlg.center();
 185                 }
 186         }
 187
 188         private void getGroups() {
 189                 GetCommand<GroupsResource> gg = new GetCommand<GroupsResource>(GroupsResource.class, GSS.get().getCurrentUserResource().getGroupsPath(), null) {
 190
 191                         @Override
 192                         public void onComplete() {
 193                                 GroupsResource res = getResult();
 194                                 MultipleGetCommand<GroupResource> ga = new MultipleGetCommand<GroupResource>(GroupResource.class, res.getGroupPaths().toArray(new String[] {}), null) {
 195
 196                                         @Override
 197                                         public void onComplete() {
 198                                                 List<GroupResource> groupList = getResult();
 199                                                 groups = groupList;
 200                                         }
 201
 202                                         @Override
 203                                         public void onError(Throwable t) {
 204                                                 GWT.log("", t);
 205                                                 GSS.get().displayError("Unable to fetch groups");
 206                                                 groups = new ArrayList<GroupResource>();
 207                                         }
 208
 209                                         @Override
 210                                         public void onError(String p, Throwable throwable) {
 211                                                 GWT.log("Path:" + p, throwable);
 212                                         }
 213                                 };
 214                                 DeferredCommand.addCommand(ga);
 215                         }
 216
 217                         @Override
 218                         public void onError(Throwable t) {
 219                                 GWT.log("", t);
 220                                 GSS.get().displayError("Unable to fetch groups");
 221                                 groups = new ArrayList<GroupResource>();
 222                         }
 223                 };
 224                 DeferredCommand.addCommand(gg);
 225         }
 226
 227         private void getVersions() {
 228                 if (GSS.get().getCurrentSelection() instanceof FileResource) {
 229                         FileResource afile = (FileResource) GSS.get().getCurrentSelection();
 230                         GWT.log("File is versioned:" + afile.isVersioned(), null);
 231                         if (afile.isVersioned()) {
 232                                 List<String> paths = new ArrayList<String>();
 233                                 for (int i = 1; i <= afile.getVersion(); i++)
 234                                         paths.add(afile.getUri() + "?version=" + i);
 235                                 MultipleHeadCommand<FileResource> gv = new MultipleHeadCommand<FileResource>(FileResource.class, paths.toArray(new String[] {}), null) {
 236
 237                                         @Override
 238                                         public void onComplete() {
 239                                                 versions = getResult();
 240                                         }
 241
 242                                         @Override
 243                                         public void onError(Throwable t) {
 244                                                 GWT.log("", t);
 245                                                 GSS.get().displayError("Unable to fetch versions");
 246                                                 versions = new ArrayList<FileResource>();
 247                                         }
 248
 249                                         @Override
 250                                         public void onError(String p, Throwable throwable) {
 251                                                 GWT.log("Path:" + p, throwable);
 252                                         }
 253                                 };
 254                                 DeferredCommand.addCommand(gv);
 255                         } else
 256                                 versions = new ArrayList<FileResource>();
 257                 } else
 258                         versions = new ArrayList<FileResource>();
 259         }
 260
 261         private void getOwnerFullName() {
 262                 if(GSS.get().getCurrentSelection() instanceof FileResource){
 263                         FileResource fileResource = (FileResource) GSS.get().getCurrentSelection();
 264                         userName = fileResource.getOwner();
 265                         if(GSS.get().findUserFullName(userName) == null){
 266                                 GetUserCommand gu = new GetUserCommand(userName);
 267                                 gu.execute();
 268                         }
 269                 }else{
 270                         FolderResource resource = ((RestResourceWrapper) GSS.get().getCurrentSelection()).getResource();
 271                         userName = resource.getOwner();
 272                         if(GSS.get().findUserFullName(userName) == null){
 273                                 GetUserCommand gu = new GetUserCommand(userName);
 274                                 gu.execute();
 275                         }
 276                 }
 277         }
 278
 279
 280 }