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 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.HasRecordsPlace;

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

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

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

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

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

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

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

38

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

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

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

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

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

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

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

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

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

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

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

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

51

52 /**

53 *

54 */

55 public class TableSelectionActivity extends AbstractActivity implements View.Presenter {

56 private final ClientFactory clientFactory;

57 private String documentID;

58 private String documentTitle;

59 private String tableName;

60 private String quickFind;

61 private String reportName;

62 private HandlerRegistration tableChangeHandlerRegistration = null;

63 private HandlerRegistration quickFindChangeHandlerRegistration = null;

64 private HandlerRegistration localeChangeHandlerRegistration = null;

65 private HandlerRegistration reportChangeHandlerRegistration = null;

66

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

68 public TableSelectionActivity(final ClientFactory clientFactory) {

69 this.clientFactory = clientFactory;

70 }

71

72 /**

73 * Invoked by the ActivityManager to start a new Activity

74 */

75 @Override

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

77

78 final TableSelectionView tableSelectionView = clientFactory.getTableSelectionView();

79 tableSelectionView.setPresenter(this);

80

81 // TODO: Check for authentication here?

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

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

84

85 // For table changes with the tableSelector:

86 final HasChangeHandlers tableSelector = tableSelectionView.getTableSelector();

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

88 @Override

89 public void onChange(final ChangeEvent event) {

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

91 // update themselves.

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

93

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

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

96 }

97 });

98

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

100 final HasChangeHandlers quickFindBox = tableSelectionView.getQuickFindBox();

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

102 @Override

103 public void onChange(final ChangeEvent event) {

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

105 // can

106 // update themselves.

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

108

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

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

111 }

112 });

113

114 // For locale changes with the localeSelector:

115 final HasChangeHandlers localeSelector = tableSelectionView.getLocaleSelector();

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

117 @Override

118 public void onChange(final ChangeEvent event) {

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

120 final String localeID = tableSelectionView.getSelectedLocale();

121 fillView(tableSelectionView);

122

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

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

125 Window.Location.assign(newURL);

126

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

128 // update themselves.

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

130 }

131 });

132

133 // For report choices with the reportSelector:

134 final HasChangeHandlers reportSelector = tableSelectionView.getReportSelector();

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

136 @Override

137 public void onChange(final ChangeEvent event) {

138 final String reportName = tableSelectionView.getSelectedReport();

139 if (StringUtils.isEmpty(reportName)) {

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

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

142 } else {

143 // Show the selected report:

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

145 }

146 }

147 });

148

149 fillView(tableSelectionView);

150

151 // we're done, set the widget

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

153 }

154

155 private void fillView(final TableSelectionView tableSelectionView) {

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

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

158 @Override

159 public void onFailure(final Throwable caught) {

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

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

162 }

163

164 @Override

165 public void onSuccess(final DocumentInfo result) {

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

167

168 if (StringUtils.isEmpty(tableName)) {

169 tableName = result.getTableNames().get(result.getDefaultTableIndex());

170 }

171

172 tableSelectionView.setSelectedTableName(tableName);

173

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

175

176 // Show what locale is currently being used:

177 String localeIDForCombo = Utils.getCurrentLocaleID();

178

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

180 // the URL or the configuration.

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

182 if (StringUtils.isEmpty(localeIDForCombo)) {

183 localeIDForCombo = "en";

184 }

185 tableSelectionView.setSelectedLocale(localeIDForCombo);

186

187 documentTitle = result.getTitle();

188 tableSelectionView.setDocumentTitle(documentTitle);

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

190 }

191 };

192

193 final String localeID = Utils.getCurrentLocaleID();

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

195

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

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

198 @Override

199 public void onFailure(final Throwable caught) {

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

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

202 }

203

204 @Override

205 public void onSuccess(final Reports result) {

206 tableSelectionView.setReportList(result);

207

208 // Show the selected report name again:

209 // TODO: Avoid duplication in ReportActivity.

210 tableSelectionView.setSelectedReport(reportName);

211 }

212 };

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

214

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

216 tableSelectionView.setQuickFindText(quickFind);

217 }

218

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

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

221 public void setPlace(final HasTablePlace place) {

222 documentID = place.getDocumentID();

223 tableName = place.getTableName();

224

225 try {

226 final HasRecordsPlace asPlace = (HasRecordsPlace) place;

227 quickFind = asPlace.getQuickFind();

228 } catch (final ClassCastException ex) {

229 quickFind = "";

230 }

231

232 final TableSelectionView tableSelectionView = clientFactory.getTableSelectionView();

233

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

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

236 tableSelectionView.setBackLinkVisible(true);

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

238 } else if (place instanceof ListPlace) {

239 tableSelectionView.setBackLinkVisible(false);

240 }

241

242 reportName = "";

243 if (place instanceof ReportPlace) {

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

245 }

246

247 fillView(tableSelectionView);

248 }

249

250 private void clearView() {

251 clientFactory.getTableSelectionView().clear();

252

253 if (tableChangeHandlerRegistration != null) {

254 tableChangeHandlerRegistration.removeHandler();

255 tableChangeHandlerRegistration = null;

256 }

257

258 if (quickFindChangeHandlerRegistration != null) {

259 quickFindChangeHandlerRegistration.removeHandler();

260 quickFindChangeHandlerRegistration = null;

261 }

262

263 if (localeChangeHandlerRegistration != null) {

264 localeChangeHandlerRegistration.removeHandler();

265 localeChangeHandlerRegistration = null;

266 }

267

268 if (reportChangeHandlerRegistration != null) {

269 reportChangeHandlerRegistration.removeHandler();

270 reportChangeHandlerRegistration = null;

271 }

272 }

273

274 /*

275 * (non-Javadoc)

276 *

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

278 */

279 @Override

280 public void onCancel() {

281 clearView();

282 }

283

284 /*

285 * (non-Javadoc)

286 *

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

288 */

289 @Override

290 public void onStop() {

291 clearView();

292 }

293

294 /*

295 * (non-Javadoc)

296 *

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

298 */

299 @Override

300 public void goTo(final Place place) {

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

302 }

303

304 }