display message while image loads on the client viewer
[pithos] / src / gr / ebs / gss / client / rest / PostCommand.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.client.rest;
20
21 import gr.ebs.gss.client.GSS;
22
23 import com.google.gwt.http.client.Request;
24 import com.google.gwt.http.client.RequestCallback;
25 import com.google.gwt.http.client.Response;
26
27
28 /**
29  * @author kman
30  *
31  */
32 public abstract class PostCommand extends RestCommand{
33         boolean complete = false;
34         String postBody=null;
35
36         public PostCommand(final String path, String data, final int okStatusCode){
37                 this(path, data, okStatusCode, true);
38         }
39         public PostCommand(final String path, String data, final int okStatusCode, boolean showLoading){
40                 setShowLoadingIndicator(showLoading);
41                 if(isShowLoadingIndicator())
42                         GSS.get().showLoadingIndicator();
43
44                 RestRequestBuilder builder = new RestRequestBuilder("POST", path);
45
46                 try {
47                         handleHeaders(builder, path);
48                         builder.sendRequest(data, new RequestCallback() {
49
50
51                                 public void onError(Request arg0, Throwable arg1) {
52                                         complete = true;
53                                         PostCommand.this.onError(arg1);
54                                 }
55
56
57                                 public void onResponseReceived(Request arg0, Response arg1) {
58                                         complete=true;
59                                         if(arg1.getStatusCode() == okStatusCode){
60                                                 postBody = arg1.getText();
61                                                 onComplete();
62                                         }
63                                         else if(arg1.getStatusCode() == 403)
64                                                 sessionExpired();
65                                         else
66                                                 PostCommand.this.onError(new RestException(path, arg1.getStatusCode(), arg1.getStatusText(), arg1.getText()));
67                                 }
68
69                         });
70                 } catch (Exception ex) {
71                         complete=true;
72                         onError(ex);
73                 }
74         }
75
76         public boolean isComplete() {
77                 return complete;
78         }
79
80         public boolean execute() {
81                 boolean com = isComplete();
82                 if(com){
83                         if(isShowLoadingIndicator())
84                                 GSS.get().hideLoadingIndicator();
85                         return false;
86                 }
87                 return true;
88         }
89
90
91         /**
92          * Retrieve the postBody.
93          *
94          * @return the postBody
95          */
96         public String getPostBody() {
97                 return postBody;
98         }
99
100
101 }