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.StringUtils;

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

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

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

115 Window.Location.assign(newURL);

116

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

118 // update themselves.

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

120 }

121 });

122

123 fillView(tableSelectionView);

124

125 // we're done, set the widget

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

127 }

128

129 private void fillView(final TableSelectionView tableSelectionView) {

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

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

132 @Override

133 public void onFailure(final Throwable caught) {

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

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

136 }

137

138 @Override

139 public void onSuccess(final DocumentInfo result) {

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

141

142 if (StringUtils.isEmpty(tableName)) {

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

144 }

145

146 tableSelectionView.setSelectedTableName(tableName);

147

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

149

150 final String localeID = Utils.getCurrentLocaleID();

151 tableSelectionView.setSelectedLocale(localeID);

152

153 documentTitle = result.getTitle();

154 tableSelectionView.setDocumentTitle(documentTitle);

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

156 }

157 };

158 final String localeID = Utils.getCurrentLocaleID();

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

160

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

162 tableSelectionView.setQuickFindText(quickFind);

163 }

164

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

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

167 public void setPlace(final HasSelectableTablePlace place) {

168 documentID = place.getDocumentID();

169 tableName = place.getTableName();

170

171 try {

172 final ListPlace asPlace = (ListPlace) place;

173 quickFind = asPlace.getQuickFind();

174 } catch (final ClassCastException ex) {

175 quickFind = "";

176 }

177

178 final TableSelectionView tableSelectionView = clientFactory.getTableSelectionView();

179

180 // Update the selected table if it's not correct.

181 if (!tableSelectionView.getSelectedTableName().equals(tableName)) {

182 tableSelectionView.setSelectedTableName(tableName);

183 }

184

185 // show the 'back to list' link if we're at a DetailsPlace, hide it otherwise

186 if (place instanceof DetailsPlace) {

187 tableSelectionView.setBackLinkVisible(true);

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

189 } else if (place instanceof ListPlace) {

190 tableSelectionView.setBackLinkVisible(false);

191 }

192

193 fillView(tableSelectionView);

194 }

195

196 private void clearView() {

197 clientFactory.getTableSelectionView().clear();

198

199 if (tableChangeHandlerRegistration != null) {

200 tableChangeHandlerRegistration.removeHandler();

201 tableChangeHandlerRegistration = null;

202 }

203

204 if (quickFindChangeHandlerRegistration != null) {

205 quickFindChangeHandlerRegistration.removeHandler();

206 quickFindChangeHandlerRegistration = null;

207 }

208

209 if (localeChangeHandlerRegistration != null) {

210 localeChangeHandlerRegistration.removeHandler();

211 localeChangeHandlerRegistration = null;

212 }

213 }

214

215 /*

216 * (non-Javadoc)

217 *

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

219 */

220 @Override

221 public void onCancel() {

222 clearView();

223 }

224

225 /*

226 * (non-Javadoc)

227 *

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

229 */

230 @Override

231 public void onStop() {

232 clearView();

233 }

234

235 /*

236 * (non-Javadoc)

237 *

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

239 */

240 @Override

241 public void goTo(final Place place) {

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

243 }

244

245 }