Allow use of translations via, for instance, &lang=de in the URL.
[online-glom:gwt-glom.git] / src / main / java / org / glom / web / client / activity / DocumentSelectionActivity.java
1 /*
2  * Copyright (C) 2011 Openismus GmbH
3  *
4  * This file is part of GWT-Glom.
5  *
6  * GWT-Glom is free software: you can redistribute it and/or modify it
7  * under the terms of the GNU Lesser General Public License as published by the
8  * Free Software Foundation, either version 3 of the License, or (at your
9  * option) any later version.
10  *
11  * GWT-Glom is distributed in the hope that it will be useful, but WITHOUT
12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License
14  * for more details.
15  *
16  * You should have received a copy of the GNU Lesser General Public License
17  * along with GWT-Glom.  If not, see <http://www.gnu.org/licenses/>.
18  */
19
20 package org.glom.web.client.activity;
21
22 import org.glom.web.client.ClientFactory;
23 import org.glom.web.client.OnlineGlomServiceAsync;
24 import org.glom.web.client.ui.DocumentSelectionView;
25 import org.glom.web.client.ui.View;
26 import org.glom.web.shared.Documents;
27
28 import com.google.gwt.activity.shared.AbstractActivity;
29 import com.google.gwt.event.shared.EventBus;
30 import com.google.gwt.place.shared.Place;
31 import com.google.gwt.user.client.Window;
32 import com.google.gwt.user.client.rpc.AsyncCallback;
33 import com.google.gwt.user.client.ui.AcceptsOneWidget;
34
35 public class DocumentSelectionActivity extends AbstractActivity implements View.Presenter {
36
37         // TODO inject with GIN
38         private final ClientFactory clientFactory;
39         private final DocumentSelectionView documentSelectionView;
40
41         public DocumentSelectionActivity(final ClientFactory clientFactory) {
42                 this.clientFactory = clientFactory;
43                 this.documentSelectionView = clientFactory.getDocumentSelectionView();
44         }
45
46         @Override
47         public void start(final AcceptsOneWidget panel, final EventBus eventBus) {
48                 Window.setTitle("Online Glom");
49
50                 documentSelectionView.setPresenter(this);
51
52                 final AsyncCallback<Documents> callback = new AsyncCallback<Documents>() {
53                         @Override
54                         public void onFailure(final Throwable caught) {
55                                 // Try to get an error message. Most likely this won't work but it's worth a try.
56                                 getAndSetErrorMessage();
57                         }
58
59                         @Override
60                         public void onSuccess(final Documents documents) {
61                                 documentSelectionView.clearHyperLinks();
62                                 if (documents.getCount() > 0) {
63                                         for (int i = 0; i < documents.getCount(); i++) {
64                                                 documentSelectionView
65                                                                 .addDocumentLink(documents.getDocumentID(i), documents.getTitle(i), "" /* localeID */);
66                                                 // TODO: Get default locale.
67                                         }
68                                 } else {
69                                         getAndSetErrorMessage();
70                                 }
71                         }
72                 };
73                 OnlineGlomServiceAsync.Util.getInstance().getDocuments(callback);
74
75                 panel.setWidget(documentSelectionView.asWidget());
76         }
77
78         @Override
79         public void goTo(final Place place) {
80                 clientFactory.getPlaceController().goTo(place);
81         }
82
83         private void getAndSetErrorMessage() {
84
85                 final AsyncCallback<String> callback = new AsyncCallback<String>() {
86                         @Override
87                         public void onFailure(final Throwable caught) {
88                                 documentSelectionView
89                                                 .setErrorMessage("Unable to communicate with the servlet. Check the error log for more information.");
90                         }
91
92                         @Override
93                         public void onSuccess(final String errorMessage) {
94                                 documentSelectionView.setErrorMessage("Configuration Error: " + errorMessage);
95                         }
96                 };
97                 OnlineGlomServiceAsync.Util.getInstance().getConfigurationErrorMessage(callback);
98
99         }
100 }