code.grnet.gr Git - pithos/blob - src/gr/ebs/gss/web/client/rest/DeleteCommand.java

   1 /*
   2  * Copyright 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.web.client.rest;
  20
  21 import gr.ebs.gss.web.client.GSS;
  22 import gr.ebs.gss.common.exceptions.InsufficientPermissionsException;
  23
  24 import com.google.gwt.http.client.Request;
  25 import com.google.gwt.http.client.RequestBuilder;
  26 import com.google.gwt.http.client.RequestCallback;
  27 import com.google.gwt.http.client.Response;
  28
  29
  30 /**
  31  * @author kman
  32  *
  33  */
  34 public abstract class DeleteCommand extends RestCommand{
  35
  36         boolean complete = false;
  37
  38         public DeleteCommand(String pathToDelete){
  39                 this(pathToDelete, true);
  40         }
  41
  42
  43         public DeleteCommand(String pathToDelete, boolean showLoading){
  44                 setShowLoadingIndicator(showLoading);
  45                 if(isShowLoadingIndicator())
  46                         GSS.get().showLoadingIndicator();
  47                 final String path;
  48                 if(pathToDelete.endsWith("/"))
  49                         path = pathToDelete;
  50                 else
  51                         path = pathToDelete+"/";
  52                 RequestBuilder builder = new RequestBuilder(RequestBuilder.DELETE, path);
  53
  54                 try {
  55                         handleHeaders(builder, path);
  56                         builder.sendRequest("", new RequestCallback() {
  57
  58                                 @Override
  59                                 public void onError(Request arg0, Throwable arg1) {
  60                                         complete = true;
  61                                         DeleteCommand.this.onError(arg1);
  62                                 }
  63
  64                                 @Override
  65                                 public void onResponseReceived(Request arg0, Response arg1) {
  66                                         complete=true;
  67                                         if(arg1.getStatusCode() == 204)
  68                                                 onComplete();
  69                                         else if(arg1.getStatusCode() == 403)
  70                                                 sessionExpired();
  71                                         else if(arg1.getStatusCode() == 405)
  72                                                 DeleteCommand.this.onError(new InsufficientPermissionsException("You don't have permissions to delete this resource"));
  73                                         else
  74                                                 DeleteCommand.this.onError(new RestException(path, arg1.getStatusCode(), arg1.getStatusText(), arg1.getText()));
  75                                 }
  76
  77                         });
  78                 } catch (Exception ex) {
  79                         complete=true;
  80                         onError(ex);
  81                 }
  82         }
  83
  84         public boolean isComplete() {
  85                 return complete;
  86         }
  87
  88         @Override
  89         public boolean execute() {
  90                 boolean com = isComplete();
  91                 if(com){
  92                         if(isShowLoadingIndicator())
  93                                 GSS.get().hideLoadingIndicator();
  94                         return false;
  95                 }
  96                 return true;
  97         }
  98
  99 }