Move the *View::Presenter types, and some API into one base View.
[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.event.TableChangeEvent;
25 import org.glom.web.client.event.TableChangeEventHandler;
26 import org.glom.web.client.place.DocumentSelectionPlace;
27 import org.glom.web.client.place.ListPlace;
28 import org.glom.web.client.ui.AuthenticationPopup;
29 import org.glom.web.client.ui.ListView;
30 import org.glom.web.client.ui.View;
31 import org.glom.web.shared.layout.LayoutGroup;
32
33 import com.google.gwt.activity.shared.AbstractActivity;
34 import com.google.gwt.core.client.GWT;
35 import com.google.gwt.event.dom.client.ClickEvent;
36 import com.google.gwt.event.dom.client.ClickHandler;
37 import com.google.gwt.event.shared.EventBus;
38 import com.google.gwt.place.shared.Place;
39 import com.google.gwt.user.client.rpc.AsyncCallback;
40 import com.google.gwt.user.client.ui.AcceptsOneWidget;
41
42 public class ListActivity extends AbstractActivity implements View.Presenter {
43
44         private final String documentID;
45         private final String tableName;
46         private final ClientFactory clientFactory;
47         private final ListView listView;
48         private final AuthenticationPopup authenticationPopup;
49
50         public ListActivity(ListPlace place, ClientFactory clientFactory) {
51                 this.documentID = place.getDocumentID();
52                 this.tableName = place.getTableName();
53                 this.clientFactory = clientFactory;
54                 listView = clientFactory.getListView();
55                 authenticationPopup = clientFactory.getAuthenticationPopup();
56         }
57
58         @Override
59         public void start(AcceptsOneWidget panel, final EventBus eventBus) {
60                 if (documentID.isEmpty())
61                         goTo(new DocumentSelectionPlace());
62
63                 // register this class as the presenter
64                 listView.setPresenter(this);
65
66                 // TODO this should really be it's own Place/Activity
67                 // check if the authentication info has been set for the document
68                 AsyncCallback<Boolean> isAuthCallback = new AsyncCallback<Boolean>() {
69                         public void onFailure(Throwable caught) {
70                                 // TODO: create a way to notify users of asynchronous callback failures
71                                 GWT.log("AsyncCallback Failed: OnlineGlomService.isAuthenticated()");
72                         }
73
74                         public void onSuccess(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                 AsyncCallback<LayoutGroup> callback = new AsyncCallback<LayoutGroup>() {
93                         public void onFailure(Throwable caught) {
94                                 // TODO: create a way to notify users of asynchronous callback failures
95                                 GWT.log("AsyncCallback Failed: OnlineGlomService.getListViewLayout()");
96                         }
97
98                         public void onSuccess(LayoutGroup result) {
99                                 // TODO check if result.getTableName() is the same as the tableName field. Update it if it's not the
100                                 // same.
101                                 listView.setCellTable(documentID, result);
102                         }
103                 };
104                 OnlineGlomServiceAsync.Util.getInstance().getListViewLayout(documentID, tableName, callback);
105
106                 // indicate that the view is ready to be displayed
107                 panel.setWidget(listView.asWidget());
108         }
109
110         private void setUpAuthClickHandler(final EventBus eventBus) {
111                 authenticationPopup.setClickOkHandler(new ClickHandler() {
112                         @Override
113                         public void onClick(ClickEvent event) {
114                                 authenticationPopup.setTextFieldsEnabled(false);
115                                 AsyncCallback<Boolean> callback = new AsyncCallback<Boolean>() {
116                                         @Override
117                                         public void onFailure(Throwable caught) {
118                                                 // TODO: create a way to notify users of asynchronous callback failures
119                                                 GWT.log("AsyncCallback Failed: OnlineGlomService.checkAuthentication()");
120                                         }
121
122                                         @Override
123                                         public void onSuccess(Boolean result) {
124                                                 if (result) {
125                                                         authenticationPopup.hide();
126                                                         eventBus.fireEvent(new TableChangeEvent(clientFactory.getTableSelectionView()
127                                                                         .getSelectedTableName()));
128                                                 } else {
129                                                         authenticationPopup.setTextFieldsEnabled(true);
130                                                         authenticationPopup.setError();
131                                                 }
132                                         }
133                                 };
134                                 OnlineGlomServiceAsync.Util.getInstance().checkAuthentication(documentID,
135                                                 authenticationPopup.getUsername(), authenticationPopup.getPassword(), callback);
136                         }
137
138                 });
139         }
140
141         private void clearView() {
142                 authenticationPopup.hide();
143                 authenticationPopup.clear();
144                 listView.clear();
145         }
146
147         /*
148          * (non-Javadoc)
149          * 
150          * @see com.google.gwt.activity.shared.AbstractActivity#onCancel()
151          */
152         @Override
153         public void onCancel() {
154                 clearView();
155         }
156
157         /*
158          * (non-Javadoc)
159          * 
160          * @see com.google.gwt.activity.shared.AbstractActivity#onStop()
161          */
162         @Override
163         public void onStop() {
164                 clearView();
165         }
166
167         /*
168          * (non-Javadoc)
169          * 
170          * @see org.glom.web.client.ui.View.Presenter#goTo(com.google.gwt.place.shared.Place)
171          */
172         public void goTo(Place place) {
173                 clientFactory.getPlaceController().goTo(place);
174         }
175
176 }