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 // For table changes with the tableSelector:

82 final HasChangeHandlers tableSelector = tableSelectionView.getTableSelector();

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

84 @Override

85 public void onChange(final ChangeEvent event) {

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

87 // update themselves.

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

89

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

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

92 }

93 });

94

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

96 final HasChangeHandlers quickFindBox = tableSelectionView.getQuickFindBox();

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

98 @Override

99 public void onChange(final ChangeEvent event) {

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

101 // can

102 // update themselves.

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

104

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

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

107 }

108 });

109

110 // For locale changes with the localeSelector:

111 final HasChangeHandlers localeSelector = tableSelectionView.getLocaleSelector();

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

113 @Override

114 public void onChange(final ChangeEvent event) {

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

116 final String localeID = tableSelectionView.getSelectedLocale();

117 fillView(tableSelectionView);

118

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

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

121 Window.Location.assign(newURL);

122

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

124 // update themselves.

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

126 }

127 });

128

129 // For report choices with the reportSelector:

130 final HasChangeHandlers reportSelector = tableSelectionView.getReportSelector();

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

132 @Override

133 public void onChange(final ChangeEvent event) {

134 final String reportName = tableSelectionView.getSelectedReport();

135 if(StringUtils.isEmpty(reportName)) {

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

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

138 } else {

139 // Show the selected report:

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

141 }

142 }

143 });

144

145 fillView(tableSelectionView);

146

147 // we're done, set the widget

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

149 }

150

151 private void fillView(final TableSelectionView tableSelectionView) {

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

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

154 @Override

155 public void onFailure(final Throwable caught) {

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

157 GWT.log("AsyncCallback Failed: OnlineGlomService.getDocumentInfo()");

158 }

159

160 @Override

161 public void onSuccess(final DocumentInfo result) {

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

163

164 if (StringUtils.isEmpty(tableName)) {

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

166 }

167

168 tableSelectionView.setSelectedTableName(tableName);

169

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

171

172 //Show what locale is currently being used:

173 String localeIDForCombo = Utils.getCurrentLocaleID();

174

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

176 //the URL or the configuration.

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

178 if(StringUtils.isEmpty(localeIDForCombo)) {

179 localeIDForCombo = "en";

180 }

181 tableSelectionView.setSelectedLocale(localeIDForCombo);

182

183 documentTitle = result.getTitle();

184 tableSelectionView.setDocumentTitle(documentTitle);

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

186 }

187 };

188

189 final String localeID = Utils.getCurrentLocaleID();

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

191

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

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

194 @Override

195 public void onFailure(final Throwable caught) {

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

197 GWT.log("AsyncCallback Failed: OnlineGlomService.getReportsList()");

198 }

199

200 @Override

201 public void onSuccess(final Reports result) {

202 tableSelectionView.setReportList(result);

203

204 // Show the selected report name again:

205 // TODO: Avoid duplication in ReportActivity.

206 tableSelectionView.setSelectedReport(reportName);

207 }

208 };

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

210

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

212 tableSelectionView.setQuickFindText(quickFind);

213 }

214

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

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

217 public void setPlace(final HasTablePlace place) {

218 documentID = place.getDocumentID();

219 tableName = place.getTableName();

220

221 try {

222 final HasRecordsPlace asPlace = (HasRecordsPlace) place;

223 quickFind = asPlace.getQuickFind();

224 } catch (final ClassCastException ex) {

225 quickFind = "";

226 }

227

228 final TableSelectionView tableSelectionView = clientFactory.getTableSelectionView();

229

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

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

232 tableSelectionView.setBackLinkVisible(true);

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

234 } else if (place instanceof ListPlace) {

235 tableSelectionView.setBackLinkVisible(false);

236 }

237

238 reportName = "";

239 if (place instanceof ReportPlace) {

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

241 }

242

243 fillView(tableSelectionView);

244 }

245

246 private void clearView() {

247 clientFactory.getTableSelectionView().clear();

248

249 if (tableChangeHandlerRegistration != null) {

250 tableChangeHandlerRegistration.removeHandler();

251 tableChangeHandlerRegistration = null;

252 }

253

254 if (quickFindChangeHandlerRegistration != null) {

255 quickFindChangeHandlerRegistration.removeHandler();

256 quickFindChangeHandlerRegistration = null;

257 }

258

259 if (localeChangeHandlerRegistration != null) {

260 localeChangeHandlerRegistration.removeHandler();

261 localeChangeHandlerRegistration = null;

262 }

263

264 if (reportChangeHandlerRegistration != null) {

265 reportChangeHandlerRegistration.removeHandler();

266 reportChangeHandlerRegistration = null;

267 }

268 }

269

270 /*

271 * (non-Javadoc)

272 *

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

274 */

275 @Override

276 public void onCancel() {

277 clearView();

278 }

279

280 /*

281 * (non-Javadoc)

282 *

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

284 */

285 @Override

286 public void onStop() {

287 clearView();

288 }

289

290 /*

291 * (non-Javadoc)

292 *

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

294 */

295 @Override

296 public void goTo(final Place place) {

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

298 }

299

300 }