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.event.LocaleChangeEvent;

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

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

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

29 import org.glom.web.client.place.HasSelectableTablePlace;

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

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

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

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

34

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

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

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

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

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

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

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

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

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

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

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

46

47 /**

48 *

49 */

50 public class TableSelectionActivity extends AbstractActivity implements View.Presenter {

51 private final ClientFactory clientFactory;

52 private String documentID;

53 private String documentTitle;

54 private String tableName;

55 private String localeID;

56 private String quickFind;

57 private HandlerRegistration tableChangeHandlerRegistration = null;

58 private HandlerRegistration quickFindChangeHandlerRegistration = null;

59 private HandlerRegistration localeChangeHandlerRegistration = null;

60

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

62 public TableSelectionActivity(final ClientFactory clientFactory) {

63 this.clientFactory = clientFactory;

64 }

65

66 /**

67 * Invoked by the ActivityManager to start a new Activity

68 */

69 @Override

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

71

72 final TableSelectionView tableSelectionView = clientFactory.getTableSelectionView();

73 tableSelectionView.setPresenter(this);

74

75 // For table changes with the tableSelector:

76 final HasChangeHandlers tableSelector = tableSelectionView.getTableSelector();

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

78 @Override

79 public void onChange(final ChangeEvent event) {

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

81 // update themselves.

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

83

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

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

86 }

87 });

88

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

90 final HasChangeHandlers quickFindBox = tableSelectionView.getQuickFindBox();

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

92 @Override

93 public void onChange(final ChangeEvent event) {

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

95 // can

96 // update themselves.

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

98

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

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

101 }

102 });

103

104 // For locale changes with the localeSelector:

105 final HasChangeHandlers localeSelector = tableSelectionView.getLocaleSelector();

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

107 @Override

108 public void onChange(final ChangeEvent event) {

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

110 localeID = tableSelectionView.getSelectedLocale();

111 fillView(tableSelectionView);

112

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

114 // update themselves.

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

116 }

117 });

118

119 fillView(tableSelectionView);

120

121 // we're done, set the widget

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

123 }

124

125 private void fillView(final TableSelectionView tableSelectionView) {

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

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

128 @Override

129 public void onFailure(final Throwable caught) {

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

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

132 }

133

134 @Override

135 public void onSuccess(final DocumentInfo result) {

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

137

138 if (StringUtils.isEmpty(tableName)) {

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

140 }

141

142 tableSelectionView.setSelectedTableName(tableName);

143

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

145 tableSelectionView.setSelectedLocale(localeID);

146

147 documentTitle = result.getTitle();

148 tableSelectionView.setDocumentTitle(documentTitle);

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

150 }

151 };

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

153

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

155 tableSelectionView.setQuickFindText(quickFind);

156 }

157

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

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

160 public void setPlace(final HasSelectableTablePlace place) {

161 documentID = place.getDocumentID();

162 tableName = place.getTableName();

163 localeID = place.getLocaleID();

164

165 try {

166 final ListPlace asPlace = (ListPlace) place;

167 quickFind = asPlace.getQuickFind();

168 } catch (final ClassCastException ex) {

169 quickFind = "";

170 }

171

172 final TableSelectionView tableSelectionView = clientFactory.getTableSelectionView();

173

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

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

176 tableSelectionView.setSelectedTableName(tableName);

177 }

178

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

180 if (place instanceof DetailsPlace) {

181 tableSelectionView.setBackLinkVisible(true);

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

183 } else if (place instanceof ListPlace) {

184 tableSelectionView.setBackLinkVisible(false);

185 }

186

187 fillView(tableSelectionView);

188 }

189

190 private void clearView() {

191 clientFactory.getTableSelectionView().clear();

192

193 if (tableChangeHandlerRegistration != null) {

194 tableChangeHandlerRegistration.removeHandler();

195 tableChangeHandlerRegistration = null;

196 }

197

198 if (quickFindChangeHandlerRegistration != null) {

199 quickFindChangeHandlerRegistration.removeHandler();

200 quickFindChangeHandlerRegistration = null;

201 }

202

203 if (localeChangeHandlerRegistration != null) {

204 localeChangeHandlerRegistration.removeHandler();

205 localeChangeHandlerRegistration = null;

206 }

207 }

208

209 /*

210 * (non-Javadoc)

211 *

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

213 */

214 @Override

215 public void onCancel() {

216 clearView();

217 }

218

219 /*

220 * (non-Javadoc)

221 *

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

223 */

224 @Override

225 public void onStop() {

226 clearView();

227 }

228

229 /*

230 * (non-Javadoc)

231 *

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

233 */

234 @Override

235 public void goTo(final Place place) {

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

237 }

238

239 }