code.grnet.gr Git - pithos/blob - web_client/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, null);
  83                                                 }
  84                                         });
  85                                 }
  86                         });
  87                 }
  88         }
  89
  90         protected void deleteSubfolder(final Iterator<Folder> iter2, final Command callback) {
  91                 if (iter2.hasNext()) {
  92                         final Folder f = iter2.next();
  93                         Iterator<File> iter3 = f.getFiles().iterator();
  94                         deleteFile(iter3, new Command() {
  95
  96                                 @Override
  97                                 public void execute() {
  98                                         Iterator<Folder> iter4 = f.getSubfolders().iterator();
  99                                         deleteSubfolder(iter4, new Command() {
 100
 101                                                 @Override
 102                                                 public void execute() {
 103                                                         String path = f.getUri();
 104                                                         DeleteRequest deleteF = new DeleteRequest(app.getApiPath(), f.getOwner(), path) {
 105
 106                                                                 @Override
 107                                                                 public void onSuccess(Resource result) {
 108                                                                         deleteSubfolder(iter2, callback);
 109                                                                 }
 110
 111                                                                 @Override
 112                                                                 public void onError(Throwable t) {
 113                                                                         GWT.log("", t);
 114                                                                         if (t instanceof RestException) {
 115                                                                                 app.displayError("Unable to delete file:" + ((RestException) t).getHttpStatusText());
 116                                                                         }
 117                                                                         else
 118                                                                                 app.displayError("System error deleting file:" + t.getMessage());
 119                                                                 }
 120                                                         };
 121                                                         deleteF.setHeader("X-Auth-Token", app.getToken());
 122                                                         Scheduler.get().scheduleDeferred(deleteF);
 123                                                 }
 124                                         });
 125                                 }
 126                         });
 127                 }
 128                 else {
 129                         if (callback != null)
 130                                 callback.execute();
 131                 }
 132         }
 133
 134         void deleteFile(final Iterator<File> iter, final Command callback) {
 135                 if (iter.hasNext()) {
 136                         File f = iter.next();
 137                         String path = f.getUri();
 138                         DeleteRequest deleteF = new DeleteRequest(app.getApiPath(), f.getOwner(), path) {
 139
 140                                 @Override
 141                                 public void onSuccess(Resource result) {
 142                                         deleteFile(iter, callback);
 143                                 }
 144
 145                                 @Override
 146                                 public void onError(Throwable t) {
 147                                         GWT.log("", t);
 148                                         if (t instanceof RestException) {
 149                                                 app.displayError("Unable to delete file:" + ((RestException) t).getHttpStatusText());
 150                                         }
 151                                         else
 152                                                 app.displayError("System error deleting file:" + t.getMessage());
 153                                 }
 154                         };
 155                         deleteF.setHeader("X-Auth-Token", app.getToken());
 156                         Scheduler.get().scheduleDeferred(deleteF);
 157                 }
 158                 else {
 159                         if (callback != null)
 160                                 callback.execute();
 161                 }
 162         }
 163 }