gitorious.org Git - online-glom:gwt-glom.git/blob - src/main/java/org/glom/web/client/activity/TableSelectionActivity.java

1 /*

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 java.util.ArrayList;

23

24 import org.glom.web.client.ClientFactory;

25 import org.glom.web.client.OnlineGlomServiceAsync;

26 import org.glom.web.client.StringUtils;

27 import org.glom.web.client.Utils;

28 import org.glom.web.client.event.LocaleChangeEvent;

29 import org.glom.web.client.event.QuickFindChangeEvent;

30 import org.glom.web.client.event.TableChangeEvent;

31 import org.glom.web.client.place.DetailsPlace;

32 import org.glom.web.client.place.HasRecordsPlace;

33 import org.glom.web.client.place.HasTablePlace;

34 import org.glom.web.client.place.ListPlace;

35 import org.glom.web.client.place.ReportPlace;

36 import org.glom.web.client.ui.TableSelectionView;

37 import org.glom.web.client.ui.View;

38 import org.glom.web.shared.DocumentInfo;

39 import org.glom.web.shared.Reports;

40

41 import com.google.gwt.activity.shared.AbstractActivity;

42 import com.google.gwt.core.client.GWT;

43 import com.google.gwt.event.dom.client.ChangeEvent;

44 import com.google.gwt.event.dom.client.ChangeHandler;

45 import com.google.gwt.event.dom.client.HasChangeHandlers;

46 import com.google.gwt.event.shared.EventBus;

47 import com.google.gwt.event.shared.HandlerRegistration;

48 import com.google.gwt.i18n.client.LocaleInfo;

49 import com.google.gwt.place.shared.Place;

50 import com.google.gwt.user.client.Window;

51 import com.google.gwt.user.client.rpc.AsyncCallback;

52 import com.google.gwt.user.client.ui.AcceptsOneWidget;

53

54 /**

55 *

56 */

57 public class TableSelectionActivity extends AbstractActivity implements View.Presenter {

58 private final ClientFactory clientFactory;

59 private String documentID;

60 private String documentTitle;

61 private String tableName;

62 private String quickFind;

63 private String reportName;

64 private HandlerRegistration tableChangeHandlerRegistration = null;

65 private HandlerRegistration quickFindChangeHandlerRegistration = null;

66 private HandlerRegistration localeChangeHandlerRegistration = null;

67 private HandlerRegistration reportChangeHandlerRegistration = null;

68

69 // This activity isn't properly configured until the List or Details Place is set with the appropriate methods

70 public TableSelectionActivity(final ClientFactory clientFactory) {

71 this.clientFactory = clientFactory;

72 }

73

74 /**

75 * Invoked by the ActivityManager to start a new Activity

76 */

77 @Override

78 public void start(final AcceptsOneWidget containerWidget, final EventBus eventBus) {

79

80 final TableSelectionView tableSelectionView = clientFactory.getTableSelectionView();

81 tableSelectionView.setPresenter(this);

82

83 // TODO: Check for authentication here?

84 // Or just let it fail to retrieve the list of tables,

85 // and let the other activity on the page ask for authentication.

86

87 // For table changes with the tableSelector:

88 final HasChangeHandlers tableSelector = tableSelectionView.getTableSelector();

89 tableChangeHandlerRegistration = tableSelector.addChangeHandler(new ChangeHandler() {

90 @Override

91 public void onChange(final ChangeEvent event) {

92 // Fire a table change event so that other views (e.g. the details view) know about the change and can

93 // update themselves.

94 eventBus.fireEvent(new TableChangeEvent(tableSelectionView.getSelectedTableName()));

95

96 // Update the browser title because there's a place change and the setPlace() method will not be called.

97 Window.setTitle(documentTitle + ": " + tableSelectionView.getSelectedTableTitle());

98 }

99 });

100

101 // For quick find changes with the quick find box:

102 final HasChangeHandlers quickFindBox = tableSelectionView.getQuickFindBox();

103 quickFindChangeHandlerRegistration = quickFindBox.addChangeHandler(new ChangeHandler() {

104 @Override

105 public void onChange(final ChangeEvent event) {

106 // Fire a quickfind change event so that other views (e.g. the details view) know about the change and

107 // can

108 // update themselves.

109 eventBus.fireEvent(new QuickFindChangeEvent(tableSelectionView.getQuickFindText()));

110

111 // Update the browser title because there's place change and the setPlace() method will not be called.

112 // TODO? Window.setTitle(documentTitle + ": " + tableSelectionView.getSelectedTableTitle());

113 }

114 });

115

116 // For locale changes with the localeSelector:

117 final HasChangeHandlers localeSelector = tableSelectionView.getLocaleSelector();

118 localeChangeHandlerRegistration = localeSelector.addChangeHandler(new ChangeHandler() {

119 @Override

120 public void onChange(final ChangeEvent event) {

121 // Show the translated version of the document title and the table names:

122 final String localeID = tableSelectionView.getSelectedLocale();

123 fillView(tableSelectionView);

124

125 final String newURL = Window.Location.createUrlBuilder()

126 .setParameter(LocaleInfo.getLocaleQueryParam(), localeID).buildString();

127 Window.Location.assign(newURL);

128

129 // Fire a locale change event so that other views (e.g. the details view) know about the change and can

130 // update themselves.

131 eventBus.fireEvent(new LocaleChangeEvent(localeID));

132 }

133 });

134

135 // For report choices with the reportSelector:

136 final HasChangeHandlers reportSelector = tableSelectionView.getReportSelector();

137 reportChangeHandlerRegistration = reportSelector.addChangeHandler(new ChangeHandler() {

138 @Override

139 public void onChange(final ChangeEvent event) {

140 final String reportName = tableSelectionView.getSelectedReport();

141 if (StringUtils.isEmpty(reportName)) {

142 // Interpret selecting no report as requesting the list view.

143 goTo(new ListPlace(documentID, tableName, quickFind));

144 } else {

145 // Show the selected report:

146 goTo(new ReportPlace(documentID, tableName, reportName, quickFind));

147 }

148 }

149 });

150

151 fillView(tableSelectionView);

152

153 // we're done, set the widget

154 containerWidget.setWidget(tableSelectionView.asWidget());

155 }

156

157 private void fillView(final TableSelectionView tableSelectionView) {

158 // get the table names, table titles and default table index for the current document

159 final AsyncCallback<DocumentInfo> callback = new AsyncCallback<DocumentInfo>() {

160 @Override

161 public void onFailure(final Throwable caught) {

162 // TODO: create a way to notify users of asynchronous callback failures

163 GWT.log("AsyncCallback Failed: OnlineGlomService.getDocumentInfo(): " + caught.getMessage());

164 }

165

166 @Override

167 public void onSuccess(final DocumentInfo result) {

168 tableSelectionView.setTableSelection(result.getTableNames(), result.getTableTitles());

169

170 if (StringUtils.isEmpty(tableName)) {

171 final ArrayList<String> tableNames = result.getTableNames();

172 if(tableNames != null) {

173 tableName = tableNames.get(result.getDefaultTableIndex());

174 }

175 }

176

177 tableSelectionView.setSelectedTableName(tableName);

178

179 tableSelectionView.setLocaleList(result.getLocaleIDs(), result.getLocaleTitles());

180

181 // Show what locale is currently being used:

182 String localeIDForCombo = Utils.getCurrentLocaleID();

183

184 // Indicate that we use English if no other locale has been specified by either

185 // the URL or the configuration.

186 // Alternatively we could also show the locale in the URL, even if it is en.

187 if (StringUtils.isEmpty(localeIDForCombo)) {

188 localeIDForCombo = "en";

189 }

190 tableSelectionView.setSelectedLocale(localeIDForCombo);

191

192 documentTitle = result.getTitle();

193 tableSelectionView.setDocumentTitle(documentTitle);

194 Window.setTitle(documentTitle + ": " + tableSelectionView.getSelectedTableTitle());

195 }

196 };

197

198 final String localeID = Utils.getCurrentLocaleID();

199 OnlineGlomServiceAsync.Util.getInstance().getDocumentInfo(documentID, localeID, callback);

200

201 // get the reports list for the current table:

202 final AsyncCallback<Reports> callback_report = new AsyncCallback<Reports>() {

203 @Override

204 public void onFailure(final Throwable caught) {

205 // TODO: create a way to notify users of asynchronous callback failures

206 GWT.log("AsyncCallback Failed: OnlineGlomService.getReportsList(): " + caught.getMessage());

207 }

208

209 @Override

210 public void onSuccess(final Reports result) {

211 tableSelectionView.setReportList(result);

212

213 // Show the selected report name again:

214 // TODO: Avoid duplication in ReportActivity.

215 tableSelectionView.setSelectedReport(reportName);

216 }

217 };

218 OnlineGlomServiceAsync.Util.getInstance().getReportsList(documentID, tableName, localeID, callback_report);

219

220 // Show the quickFind text that was specified by the URL token:

221 tableSelectionView.setQuickFindText(quickFind);

222 }

223

224 // This method will be called before the {@link TableSelectionActivity#start(AcceptsOneWidget, EventBus)} method and

225 // any time the Place changes after the start method has been called.

226 public void setPlace(final HasTablePlace place) {

227 documentID = place.getDocumentID();

228 tableName = place.getTableName();

229

230 try {

231 final HasRecordsPlace asPlace = (HasRecordsPlace) place;

232 quickFind = asPlace.getQuickFind();

233 } catch (final ClassCastException ex) {

234 quickFind = "";

235 }

236

237 final TableSelectionView tableSelectionView = clientFactory.getTableSelectionView();

238

239 // Show the 'back to list' link if we're at a DetailsPlace or a ReportPlace.

240 if (place instanceof DetailsPlace || place instanceof ReportPlace) {

241 tableSelectionView.setBackLinkVisible(true);

242 tableSelectionView.setBackLink(documentID, tableName, ""); // TODO: quickfind?

243 } else if (place instanceof ListPlace) {

244 tableSelectionView.setBackLinkVisible(false);

245 }

246

247 reportName = "";

248 if (place instanceof ReportPlace) {

249 reportName = ((ReportPlace) place).getReportName();

250 }

251

252 fillView(tableSelectionView);

253 }

254

255 private void clearView() {

256 clientFactory.getTableSelectionView().clear();

257

258 if (tableChangeHandlerRegistration != null) {

259 tableChangeHandlerRegistration.removeHandler();

260 tableChangeHandlerRegistration = null;

261 }

262

263 if (quickFindChangeHandlerRegistration != null) {

264 quickFindChangeHandlerRegistration.removeHandler();

265 quickFindChangeHandlerRegistration = null;

266 }

267

268 if (localeChangeHandlerRegistration != null) {

269 localeChangeHandlerRegistration.removeHandler();

270 localeChangeHandlerRegistration = null;

271 }

272

273 if (reportChangeHandlerRegistration != null) {

274 reportChangeHandlerRegistration.removeHandler();

275 reportChangeHandlerRegistration = null;

276 }

277 }

278

279 /*

280 * (non-Javadoc)

281 *

282 * @see com.google.gwt.activity.shared.AbstractActivity#onCancel()

283 */

284 @Override

285 public void onCancel() {

286 clearView();

287 }

288

289 /*

290 * (non-Javadoc)

291 *

292 * @see com.google.gwt.activity.shared.AbstractActivity#onStop()

293 */

294 @Override

295 public void onStop() {

296 clearView();

297 }

298

299 /*

300 * (non-Javadoc)

301 *

302 * @see org.glom.web.client.ui.View.Presenter#goTo(com.google.gwt.place.shared.Place)

303 */

304 @Override

305 public void goTo(final Place place) {

306 clientFactory.getPlaceController().goTo(place);

307 }

308

309 }