Let Eclipse format all source code.
[online-glom:gwt-glom.git] / src / main / java / org / glom / web / client / activity / TableSelectionActivity.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.QuickFindChangeEvent;
28 import org.glom.web.client.event.TableChangeEvent;
29 import org.glom.web.client.place.DetailsPlace;
30 import org.glom.web.client.place.HasSelectableTablePlace;
31 import org.glom.web.client.place.ListPlace;
32 import org.glom.web.client.ui.TableSelectionView;
33 import org.glom.web.client.ui.View;
34 import org.glom.web.shared.DocumentInfo;
35
36 import com.google.gwt.activity.shared.AbstractActivity;
37 import com.google.gwt.core.client.GWT;
38 import com.google.gwt.event.dom.client.ChangeEvent;
39 import com.google.gwt.event.dom.client.ChangeHandler;
40 import com.google.gwt.event.dom.client.HasChangeHandlers;
41 import com.google.gwt.event.shared.EventBus;
42 import com.google.gwt.event.shared.HandlerRegistration;
43 import com.google.gwt.i18n.client.LocaleInfo;
44 import com.google.gwt.place.shared.Place;
45 import com.google.gwt.user.client.Window;
46 import com.google.gwt.user.client.rpc.AsyncCallback;
47 import com.google.gwt.user.client.ui.AcceptsOneWidget;
48
49 /**
50  *
51  */
52 public class TableSelectionActivity extends AbstractActivity implements View.Presenter {
53         private final ClientFactory clientFactory;
54         private String documentID;
55         private String documentTitle;
56         private String tableName;
57         private String quickFind;
58         private HandlerRegistration tableChangeHandlerRegistration = null;
59         private HandlerRegistration quickFindChangeHandlerRegistration = null;
60         private HandlerRegistration localeChangeHandlerRegistration = null;
61
62         // This activity isn't properly configured until the List or Details Place is set with the appropriate methods
63         public TableSelectionActivity(final ClientFactory clientFactory) {
64                 this.clientFactory = clientFactory;
65         }
66
67         /**
68          * Invoked by the ActivityManager to start a new Activity
69          */
70         @Override
71         public void start(final AcceptsOneWidget containerWidget, final EventBus eventBus) {
72
73                 final TableSelectionView tableSelectionView = clientFactory.getTableSelectionView();
74                 tableSelectionView.setPresenter(this);
75
76                 // For table changes with the tableSelector:
77                 final HasChangeHandlers tableSelector = tableSelectionView.getTableSelector();
78                 tableChangeHandlerRegistration = tableSelector.addChangeHandler(new ChangeHandler() {
79                         @Override
80                         public void onChange(final ChangeEvent event) {
81                                 // Fire a table change event so that other views (e.g. the details view) know about the change and can
82                                 // update themselves.
83                                 eventBus.fireEvent(new TableChangeEvent(tableSelectionView.getSelectedTableName()));
84
85                                 // Update the browser title because there's place change and the setPlace() method will not be called.
86                                 Window.setTitle(documentTitle + ": " + tableSelectionView.getSelectedTableTitle());
87                         }
88                 });
89
90                 // For quick find changes with the quick find box:
91                 final HasChangeHandlers quickFindBox = tableSelectionView.getQuickFindBox();
92                 quickFindChangeHandlerRegistration = quickFindBox.addChangeHandler(new ChangeHandler() {
93                         @Override
94                         public void onChange(final ChangeEvent event) {
95                                 // Fire a quickfind change event so that other views (e.g. the details view) know about the change and
96                                 // can
97                                 // update themselves.
98                                 eventBus.fireEvent(new QuickFindChangeEvent(tableSelectionView.getQuickFindText()));
99
100                                 // Update the browser title because there's place change and the setPlace() method will not be called.
101                                 // TODO? Window.setTitle(documentTitle + ": " + tableSelectionView.getSelectedTableTitle());
102                         }
103                 });
104
105                 // For locale changes with the localeSelector:
106                 final HasChangeHandlers localeSelector = tableSelectionView.getLocaleSelector();
107                 localeChangeHandlerRegistration = localeSelector.addChangeHandler(new ChangeHandler() {
108                         @Override
109                         public void onChange(final ChangeEvent event) {
110                                 // Show the translated version of the document title and the table names:
111                                 final String localeID = tableSelectionView.getSelectedLocale();
112                                 fillView(tableSelectionView);
113
114                                 final String newURL = Window.Location.createUrlBuilder()
115                                                 .setParameter(LocaleInfo.getLocaleQueryParam(), localeID).buildString();
116                                 Window.Location.assign(newURL);
117
118                                 // Fire a locale change event so that other views (e.g. the details view) know about the change and can
119                                 // update themselves.
120                                 eventBus.fireEvent(new LocaleChangeEvent(localeID));
121                         }
122                 });
123
124                 fillView(tableSelectionView);
125
126                 // we're done, set the widget
127                 containerWidget.setWidget(tableSelectionView.asWidget());
128         }
129
130         private void fillView(final TableSelectionView tableSelectionView) {
131                 // get the table names, table titles and default table index for the current document
132                 final AsyncCallback<DocumentInfo> callback = new AsyncCallback<DocumentInfo>() {
133                         @Override
134                         public void onFailure(final Throwable caught) {
135                                 // TODO: create a way to notify users of asynchronous callback failures
136                                 GWT.log("AsyncCallback Failed: OnlineGlomService.getDocumentInfo()");
137                         }
138
139                         @Override
140                         public void onSuccess(final DocumentInfo result) {
141                                 tableSelectionView.setTableSelection(result.getTableNames(), result.getTableTitles());
142
143                                 if (StringUtils.isEmpty(tableName)) {
144                                         tableName = result.getTableNames().get(result.getDefaultTableIndex());
145                                 }
146
147                                 tableSelectionView.setSelectedTableName(tableName);
148
149                                 tableSelectionView.setLocaleList(result.getLocaleIDs(), result.getLocaleTitles());
150
151                                 final String localeID = Utils.getCurrentLocaleID();
152                                 tableSelectionView.setSelectedLocale(localeID);
153
154                                 documentTitle = result.getTitle();
155                                 tableSelectionView.setDocumentTitle(documentTitle);
156                                 Window.setTitle(documentTitle + ": " + tableSelectionView.getSelectedTableTitle());
157                         }
158                 };
159                 final String localeID = Utils.getCurrentLocaleID();
160                 OnlineGlomServiceAsync.Util.getInstance().getDocumentInfo(documentID, localeID, callback);
161
162                 // Show the quickFind text that was specified by the URL token:
163                 tableSelectionView.setQuickFindText(quickFind);
164         }
165
166         // This method will be called before the {@link TableSelectionActivity#start(AcceptsOneWidget, EventBus)} method and
167         // any time the Place changes after the start method has been called.
168         public void setPlace(final HasSelectableTablePlace place) {
169                 documentID = place.getDocumentID();
170                 tableName = place.getTableName();
171
172                 try {
173                         final ListPlace asPlace = (ListPlace) place;
174                         quickFind = asPlace.getQuickFind();
175                 } catch (final ClassCastException ex) {
176                         quickFind = "";
177                 }
178
179                 final TableSelectionView tableSelectionView = clientFactory.getTableSelectionView();
180
181                 // Update the selected table if it's not correct.
182                 if (!tableSelectionView.getSelectedTableName().equals(tableName)) {
183                         tableSelectionView.setSelectedTableName(tableName);
184                 }
185
186                 // show the 'back to list' link if we're at a DetailsPlace, hide it otherwise
187                 if (place instanceof DetailsPlace) {
188                         tableSelectionView.setBackLinkVisible(true);
189                         tableSelectionView.setBackLink(documentID, tableName, ""); // TODO: quickfind?
190                 } else if (place instanceof ListPlace) {
191                         tableSelectionView.setBackLinkVisible(false);
192                 }
193
194                 fillView(tableSelectionView);
195         }
196
197         private void clearView() {
198                 clientFactory.getTableSelectionView().clear();
199
200                 if (tableChangeHandlerRegistration != null) {
201                         tableChangeHandlerRegistration.removeHandler();
202                         tableChangeHandlerRegistration = null;
203                 }
204
205                 if (quickFindChangeHandlerRegistration != null) {
206                         quickFindChangeHandlerRegistration.removeHandler();
207                         quickFindChangeHandlerRegistration = null;
208                 }
209
210                 if (localeChangeHandlerRegistration != null) {
211                         localeChangeHandlerRegistration.removeHandler();
212                         localeChangeHandlerRegistration = null;
213                 }
214         }
215
216         /*
217          * (non-Javadoc)
218          * 
219          * @see com.google.gwt.activity.shared.AbstractActivity#onCancel()
220          */
221         @Override
222         public void onCancel() {
223                 clearView();
224         }
225
226         /*
227          * (non-Javadoc)
228          * 
229          * @see com.google.gwt.activity.shared.AbstractActivity#onStop()
230          */
231         @Override
232         public void onStop() {
233                 clearView();
234         }
235
236         /*
237          * (non-Javadoc)
238          * 
239          * @see org.glom.web.client.ui.View.Presenter#goTo(com.google.gwt.place.shared.Place)
240          */
241         @Override
242         public void goTo(final Place place) {
243                 clientFactory.getPlaceController().goTo(place);
244         }
245
246 }