Further libglom implementation in Java.
[online-glom:gwt-glom.git] / src / main / java / org / glom / web / client / activity / ListActivity.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.StringUtils;
25 import org.glom.web.client.Utils;
26 import org.glom.web.client.event.LocaleChangeEvent;
27 import org.glom.web.client.event.LocaleChangeEventHandler;
28 import org.glom.web.client.event.QuickFindChangeEvent;
29 import org.glom.web.client.event.QuickFindChangeEventHandler;
30 import org.glom.web.client.event.TableChangeEvent;
31 import org.glom.web.client.event.TableChangeEventHandler;
32 import org.glom.web.client.place.DocumentSelectionPlace;
33 import org.glom.web.client.place.HasRecordsPlace;
34 import org.glom.web.client.place.ListPlace;
35 import org.glom.web.client.ui.ListView;
36 import org.glom.web.shared.libglom.layout.LayoutGroup;
37
38 import com.google.gwt.core.client.GWT;
39 import com.google.gwt.event.dom.client.ClickEvent;
40 import com.google.gwt.event.dom.client.ClickHandler;
41 import com.google.gwt.event.shared.EventBus;
42 import com.google.gwt.user.client.rpc.AsyncCallback;
43 import com.google.gwt.user.client.ui.AcceptsOneWidget;
44
45 public class ListActivity extends HasTableActivity {
46
47         private final String quickFind;
48         private final ListView listView;
49
50         public ListActivity(final HasRecordsPlace place, final ClientFactory clientFactory) {
51                 super(place, clientFactory);
52                 this.quickFind = place.getQuickFind();
53                 this.listView = clientFactory.getListView();
54         }
55
56         @Override
57         public void start(final AcceptsOneWidget panel, final EventBus eventBus) {
58                 if (StringUtils.isEmpty(documentID))
59                         goTo(new DocumentSelectionPlace());
60
61                 // register this class as the presenter
62                 listView.setPresenter(this);
63
64                 // TODO this should really be it's own Place/Activity
65                 // check if the authentication info has been set for the document
66                 final AsyncCallback<Boolean> isAuthCallback = new AsyncCallback<Boolean>() {
67                         @Override
68                         public void onFailure(final Throwable caught) {
69                                 // TODO: create a way to notify users of asynchronous callback failures
70                                 GWT.log("AsyncCallback Failed: OnlineGlomService.isAuthenticated()");
71                         }
72
73                         @Override
74                         public void onSuccess(final Boolean result) {
75                                 if (!result) {
76                                         setUpAuthClickHandler(eventBus);
77                                         authenticationPopup.center();
78                                 }
79                         }
80                 };
81                 OnlineGlomServiceAsync.Util.getInstance().isAuthenticated(documentID, isAuthCallback);
82
83                 // set the change handler for the table selection widget
84                 eventBus.addHandler(TableChangeEvent.TYPE, new TableChangeEventHandler() {
85                         @Override
86                         public void onTableChange(final TableChangeEvent event) {
87                                 goTo(new ListPlace(documentID, event.getNewTableName(), ""));
88                         }
89                 });
90
91                 // populate the cell table with data
92                 final AsyncCallback<LayoutGroup> callback = new AsyncCallback<LayoutGroup>() {
93                         @Override
94                         public void onFailure(final Throwable caught) {
95                                 // TODO: create a way to notify users of asynchronous callback failures
96                                 GWT.log("AsyncCallback Failed: OnlineGlomService.getListViewLayout()");
97                         }
98
99                         @Override
100                         public void onSuccess(final LayoutGroup result) {
101                                 // TODO check if result.getTableName() is the same as the tableName field. Update it if it's not the
102                                 // same.
103                                 listView.setCellTable(documentID, tableName, result, quickFind);
104                         }
105                 };
106
107                 final String localeID = Utils.getCurrentLocaleID();
108                 OnlineGlomServiceAsync.Util.getInstance().getListViewLayout(documentID, tableName, localeID, callback);
109
110                 // TODO: Avoid the code duplication with DetailsActivity.
111                 // set the change handler for the quickfind text widget
112                 eventBus.addHandler(QuickFindChangeEvent.TYPE, new QuickFindChangeEventHandler() {
113                         @Override
114                         public void onQuickFindChange(final QuickFindChangeEvent event) {
115                                 // We switch to the List view, to show search results.
116                                 // TODO: Show the details view if there is only one result.
117                                 goTo(new ListPlace(documentID, tableName, event.getNewQuickFindText()));
118                         }
119                 });
120
121                 // Set the change handler for the table selection widget
122                 eventBus.addHandler(LocaleChangeEvent.TYPE, new LocaleChangeEventHandler() {
123                         @Override
124                         public void onLocaleChange(final LocaleChangeEvent event) {
125                                 // note the empty primary key item
126                                 goTo(new ListPlace(documentID, tableName, quickFind));
127                         }
128                 });
129
130                 // indicate that the view is ready to be displayed
131                 panel.setWidget(listView.asWidget());
132         }
133
134         private void setUpAuthClickHandler(final EventBus eventBus) {
135                 authenticationPopup.setClickOkHandler(new ClickHandler() {
136                         @Override
137                         public void onClick(final ClickEvent event) {
138                                 authenticationPopup.setTextFieldsEnabled(false);
139                                 final AsyncCallback<Boolean> callback = new AsyncCallback<Boolean>() {
140                                         @Override
141                                         public void onFailure(final Throwable caught) {
142                                                 // TODO: create a way to notify users of asynchronous callback failures
143                                                 GWT.log("AsyncCallback Failed: OnlineGlomService.checkAuthentication()");
144                                         }
145
146                                         @Override
147                                         public void onSuccess(final Boolean result) {
148                                                 if (result) {
149                                                         authenticationPopup.hide();
150                                                         eventBus.fireEvent(new TableChangeEvent(clientFactory.getTableSelectionView()
151                                                                         .getSelectedTableName()));
152                                                 } else {
153                                                         authenticationPopup.setTextFieldsEnabled(true);
154                                                         authenticationPopup.setError();
155                                                 }
156                                         }
157                                 };
158                                 OnlineGlomServiceAsync.Util.getInstance().checkAuthentication(documentID,
159                                                 authenticationPopup.getUsername(), authenticationPopup.getPassword(), callback);
160                         }
161
162                 });
163         }
164
165         private void clearView() {
166                 authenticationPopup.hide();
167                 authenticationPopup.clear();
168                 listView.clear();
169         }
170
171         /*
172          * (non-Javadoc)
173          * 
174          * @see com.google.gwt.activity.shared.AbstractActivity#onCancel()
175          */
176         @Override
177         public void onCancel() {
178                 clearView();
179         }
180
181         /*
182          * (non-Javadoc)
183          * 
184          * @see com.google.gwt.activity.shared.AbstractActivity#onStop()
185          */
186         @Override
187         public void onStop() {
188                 clearView();
189         }
190
191 }