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

   1 /*
   2  * Copyright 2011 GRNET S.A. All rights reserved.
   3  *
   4  * Redistribution and use in source and binary forms, with or
   5  * without modification, are permitted provided that the following
   6  * conditions are met:
   7  *
   8  *   1. Redistributions of source code must retain the above
   9  *      copyright notice, this list of conditions and the following
  10  *      disclaimer.
  11  *
  12  *   2. Redistributions in binary form must reproduce the above
  13  *      copyright notice, this list of conditions and the following
  14  *      disclaimer in the documentation and/or other materials
  15  *      provided with the distribution.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY GRNET S.A. ``AS IS'' AND ANY EXPRESS
  18  * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  19  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  20  * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GRNET S.A OR
  21  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  22  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  23  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
  24  * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
  25  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  26  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
  27  * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  28  * POSSIBILITY OF SUCH DAMAGE.
  29  *
  30  * The views and conclusions contained in the software and
  31  * documentation are those of the authors and should not be
  32  * interpreted as representing official policies, either expressed
  33  * or implied, of GRNET S.A.
  34  */
  35 package gr.grnet.pithos.web.client.commands;
  36
  37 import java.util.Iterator;
  38
  39 import gr.grnet.pithos.web.client.Pithos;
  40 import gr.grnet.pithos.web.client.foldertree.File;
  41 import gr.grnet.pithos.web.client.foldertree.Folder;
  42 import gr.grnet.pithos.web.client.foldertree.Resource;
  43 import gr.grnet.pithos.web.client.rest.DeleteRequest;
  44 import gr.grnet.pithos.web.client.rest.RestException;
  45
  46 import com.google.gwt.core.client.GWT;
  47 import com.google.gwt.core.client.Scheduler;
  48 import com.google.gwt.user.client.Command;
  49 import com.google.gwt.user.client.ui.PopupPanel;
  50
  51
  52 /**
  53  * Command to empty trash bin.
  54  */
  55 public class EmptyTrashCommand implements Command{
  56         private PopupPanel containerPanel;
  57
  58     Pithos app;
  59
  60         public EmptyTrashCommand(Pithos _app, PopupPanel _containerPanel){
  61         app = _app;
  62                 containerPanel = _containerPanel;
  63         }
  64
  65         @Override
  66         public void execute() {
  67                 if (containerPanel != null)
  68                         containerPanel.hide();
  69
  70                 final Folder trash = app.getAccount().getTrash();
  71                 if (trash != null) {
  72                         Iterator<File> iter = trash.getFiles().iterator();
  73                         deleteFile(iter, new Command() {
  74
  75                                 @Override
  76                                 public void execute() {
  77                                         Iterator<Folder> iter2 = trash.getSubfolders().iterator();
  78                                         deleteSubfolder(iter2, new Command() {
  79
  80                                                 @Override
  81                                                 public void execute() {
  82                                                         app.updateTrash(true, new Command() {
  83
  84                                                                 @Override
  85                                                                 public void execute() {
  86                                                                         app.updateStatistics();
  87                                                                 }
  88                                                         });
  89                                                 }
  90                                         });
  91                                 }
  92                         });
  93                 }
  94         }
  95
  96         protected void deleteSubfolder(final Iterator<Folder> iter2, final Command callback) {
  97                 if (iter2.hasNext()) {
  98                         final Folder f = iter2.next();
  99                         Iterator<File> iter3 = f.getFiles().iterator();
 100                         deleteFile(iter3, new Command() {
 101
 102                                 @Override
 103                                 public void execute() {
 104                                         Iterator<Folder> iter4 = f.getSubfolders().iterator();
 105                                         deleteSubfolder(iter4, new Command() {
 106
 107                                                 @Override
 108                                                 public void execute() {
 109                                                         String path = f.getUri();
 110                                                         DeleteRequest deleteF = new DeleteRequest(app.getApiPath(), f.getOwner(), path) {
 111
 112                                                                 @Override
 113                                                                 public void onSuccess(Resource result) {
 114                                                                         deleteSubfolder(iter2, callback);
 115                                                                 }
 116
 117                                                                 @Override
 118                                                                 public void onError(Throwable t) {
 119                                                                         GWT.log("", t);
 120                                                                         if (t instanceof RestException) {
 121                                                                                 app.displayError("Unable to delete file:" + ((RestException) t).getHttpStatusText());
 122                                                                         }
 123                                                                         else
 124                                                                                 app.displayError("System error deleting file:" + t.getMessage());
 125                                                                 }
 126                                                         };
 127                                                         deleteF.setHeader("X-Auth-Token", app.getToken());
 128                                                         Scheduler.get().scheduleDeferred(deleteF);
 129                                                 }
 130                                         });
 131                                 }
 132                         });
 133                 }
 134                 else {
 135                         if (callback != null)
 136                                 callback.execute();
 137                 }
 138         }
 139
 140         void deleteFile(final Iterator<File> iter, final Command callback) {
 141                 if (iter.hasNext()) {
 142                         File f = iter.next();
 143                         String path = f.getUri();
 144                         DeleteRequest deleteF = new DeleteRequest(app.getApiPath(), f.getOwner(), path) {
 145
 146                                 @Override
 147                                 public void onSuccess(Resource result) {
 148                                         deleteFile(iter, callback);
 149                                 }
 150
 151                                 @Override
 152                                 public void onError(Throwable t) {
 153                                         GWT.log("", t);
 154                                         if (t instanceof RestException) {
 155                                                 app.displayError("Unable to delete file:" + ((RestException) t).getHttpStatusText());
 156                                         }
 157                                         else
 158                                                 app.displayError("System error deleting file:" + t.getMessage());
 159                                 }
 160                         };
 161                         deleteF.setHeader("X-Auth-Token", app.getToken());
 162                         Scheduler.get().scheduleDeferred(deleteF);
 163                 }
 164                 else {
 165                         if (callback != null)
 166                                 callback.execute();
 167                 }
 168         }
 169 }